[go: up one dir, main page]

WO2002015573A1 - Tv displaying system for computer using dual monitor having main-display and sub-display - Google Patents

Tv displaying system for computer using dual monitor having main-display and sub-display Download PDF

Info

Publication number
WO2002015573A1
WO2002015573A1 PCT/KR2001/001380 KR0101380W WO0215573A1 WO 2002015573 A1 WO2002015573 A1 WO 2002015573A1 KR 0101380 W KR0101380 W KR 0101380W WO 0215573 A1 WO0215573 A1 WO 0215573A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
video
display
computer
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2001/001380
Other languages
French (fr)
Inventor
Eun Seog Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tophead com
Original Assignee
Tophead com
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tophead com filed Critical Tophead com
Priority to AU2001278810A priority Critical patent/AU2001278810A1/en
Publication of WO2002015573A1 publication Critical patent/WO2002015573A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1438—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display using more than one graphics controller
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4143—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a Personal Computer [PC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4183—External card to be used in combination with the client device, e.g. for conditional access providing its own processing capabilities, e.g. external module for video decoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42653—Internal components of the client ; Characteristics thereof for processing graphics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/12—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
    • G09G2340/125—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels wherein one of the images is motion video
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/02—Networking aspects
    • G09G2370/027—Arrangements and methods specific for the display of internet documents

Definitions

  • the present invention relates to a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, and more particularly, to a system for displaying TV signals on a computer using a dual monitor having a main-display and a sub-display in which the dual monitor and a TV reception card are added in the computer, and the right of using the monitor can be limited.
  • a TV tuner card having a television broadcasting reception function should be installed in a computer in order to receive and watch television signals using the computer.
  • the whole screen of the monitor should be used as a TV screen or part of the monitor screen should be shared as a TV screen.
  • a working screen becomes smaller, which lowers a working ability.
  • a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, the TV displaying system comprising: a first video card for converting first screen data output from a computer into a first video signal and outputting the first video signal-; a second video card for converting second screen data output from the computer into a second video signal and outputting the second video signal; a .TV tuner for receiving and outputting a TV signal; a first video mixer for mixing the first video signal output from the first video card and the TV signal output from the TV tuner and outputting a first mixed signal; a second video mixer for mixing the second video signal output from the second video card and the TV signal output from the TV tuner and outputting a second mixed signal; a monitor having a main-display for displaying the first mixed signal output from the first video mixer and a sub-display for displaying the second mixed signal output from the second video mixer; and a monitor controller for controlling the first
  • the -TV displaying system further comprises a monitor protector for selectively limiting the TV signal output from any one of the first and second video mixers, in which the monitor protector limits the output of the TV signal according to whether or not a protection signal is included in the TV signal.
  • the protection signal is added in the TV signal for transmission.
  • the monitor protector controls whether the first and second signals respectively output from the first and second video mixers are output using a release code input from the computer, for releasing a protection function.
  • the present invention can restrict a user ' s access by using the protection signal and a release code, when a user gains access to an Internet website using the computer.
  • the second video card can be implemented by a USB video card for converting the second screen data output via a USB port in the computer into the second video signal.
  • the present invention uses a dual monitor having a main-display and a sub-display, in which a data processing work in the computer is displayed via the main-display and a TV signal is displayed via the sub-display, to thereby enable a user to watch the TV while performing a computer work without any inconveniences.
  • the TV signal can be displayed via any one selected from the main-display and the sub-display. Also, using the protection signal can control whether or not the dual monitor is used.
  • FIG.1 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a first embodiment of the present invention
  • FIG.2 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a second embodiment of the present invention
  • FIG. 3 is a flowchart view for explaining a protection process in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention
  • FIG.4 is a flowchart view for explaining a TV displaying method in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention.
  • FIG. 1 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a first embodiment of the present invention.
  • FIG.2 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a second embodiment of the present invention.
  • FIG.3 is a flowchart view for explaining a protection process in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention.
  • FIG. 4 is a flowchart view for explaining a TV displaying method in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention.
  • a dual monitor 20 used in the present invention includes a main-display 22, for example, having a 17" screen or so which provides a relatively larger display region and a sub-display 24, for example, having an 8" screen or so, which provides a relatively smaller display region.
  • the main-display 22 displays a first video signal supplied from a first VGA card 15 installed in a PCI slot or an AGP slot in a computer 10.
  • the sub-display 24 displays a second video signal supplied from a second VGA card 13 installed in another slot.
  • a TV tuner 40 receives a television signal under the control of the computer 10 and outputs the received television signal, in which the output signal can be selectively displayed on the main-display 22 or the sub-display 24.
  • the output signal from the TV tuner 40 is synthesized with the output signal from the first VGA card 15 or the second VGA card 13 by first and second video mixers 30 and 35, respectively.
  • the operations of the first and second video mixers 30 and 35 are controlled by a monitor controller 42 which is controlled by the computer 10 via an I/O port 11.
  • the monitor protector 44 detects whether the second VGA card 13 is not connected to the computer 10, or to the sub-display 24, and transfers the detected result to the monitor controller 42. Then, the monitor controller 42 stops the output of the second video mixer 30.
  • the monitor 20 is configured by a main-display 22 and a sub-display 24, so that a TV broadcasting received via the TV tuner 40 can be selectively displayed on the main-display 22 or the sub-display 24, so that a user can watch the displayed TV broadcasting, in which case a TV broadcasting received via the TV tuner 40 need to be limited.to particular persons so that they cannot watch it.
  • a protection signal Sp is added in a TV signal for transmission, in order to enable the monitor to operate at a protection mode.
  • the protection signal Sp is detected via the monitor protector 44.
  • the monitor controller 42 uses the detected protection signal Sp, and thus limits the output of the TV signal among the first and second video mixers 30 and 35.
  • a release code for releasing the protection signal Sp is used.
  • a release code is provided to a user using the computer 10, and then if the user inputs the release code into the computer 10, a TV signal added with the protection signal Sp is output via any one of the first and second video mixers 30 and 35.
  • a TVsignal canbe transmitted and received at a protection mode or a non-protection mode.
  • a current mode is a protection mode (S10) . If the current mode is a protection mode, the monitor protector 44 confirms whether a protection signal Sp is detected from the TV signal (Sll) . Then, it is checked whether a release code is input by a user (S12) .
  • the monitor controller 42 synthesizes the TV signal output from the TV tuner 40 with any one of the first and second video signals selected by a user, using any one of the selected first and second video mixers 30 and 35 (S13) , and displays the synthesized result on the main-display 22 or the sub-display 24. Meanwhile, if the current mode is not a protection mode in the result of confirmation in the protection mode confirmation step (S10), the TV signal is synthesized with the first or second video signal via the selected first or second video mixer 30 or 35. In addition, if the protection signal Sp is not detected or any release code is not input, the selected first or second video mixer 30 or 35 is turned off so that any video signal is not output.
  • the above-described protection signal Sp and the release code can be applied to a pay cable TV broadcasting reception system.
  • a broadcasting signal is scrambled through a scrambler and then the scrambled broadcasting signal is transmitted. Then, the scrambled broadcasting signal is discrambled through a discrambler installed in a cable TV set-top-box to thereby enable users to watch the broadcasting.
  • a personal computer In the case that a user intends to watch a broadcasting such as a cable TV, using a personal computer
  • PC personal computer
  • an existing set-top-box should be installed to watch the broadcasting, which inconveniences users.
  • the present invention adds a protection signal
  • the present invention can provide information to users with a thorough security.
  • the present invention can be applied to a website which provide adult information to which children or juveniles are prevented from approaching or a website which provides paid information, very efficiently.
  • the TV signal output from the TV tuner 40 varies in view of a screen in size according to a monitor displayed. That is, a resolution varies according to the size of the monitor display.
  • the TV signal need to be zoom-in or zoom-out processed in order to adjust a resolution according to the selected first or second video mixer 30 or 35, which enables the size of the screen to coincide with each other.
  • the TV tuner 40 operates (S20) .
  • a displayed monitor is the main-display 22 or the sub-display 24 (S21) .
  • the TV signal is zoom-out processed (S22) , to meet the screen size of the main-display 22, so that is canbe displayed on the main-display 22 (S23) .
  • the TV signal is zoom-in processed (S25) to meet the screen size of the sub-display 24, so that is can be displayed on the sub-display 24 (S26) .
  • first and second VGA cards 15 and 13 are used to output the first and second video signals which are displayed on the main-display 22 and the sub-display
  • a USB VGA card 14 receives video data which is input via a USB port 12 in the computer 10, and converts the received video data into a video signal, in the second embodiment of the present invention as shown in FIG. 2, instead of the second VGA card 13.
  • the other components of FIG. 2 have the same names and functions as those of the first embodiment of FIG. 1.
  • a sub-display 24 has a smaller number of data displayed than that of a main-display 22. Accordingly, A USB VGA card 14 receives video data via a USB port 12 and converts it into a second video signal . Then, the second video signal is input to a second video mixer 35. The second video signal input in the second video mixer 35 is synthesized or not synthesized with a TV signal according to a user selection, to then be displayed on the sub-display 24.
  • a USB has two kinds of transmission rates such as 12Mbits (high speed) and 1.5Mbits (low speed).
  • An ECP/EPP parallel port has a transmission rate of 3Mbytes.
  • An IDE has a transmission rate of 3.3 ⁇ 16.7Mbytes .
  • a SCSI has a transmission rate of 5Mbytes or lOMbytes.
  • the USB port 12 has a sufficient transmission rate so that video data can be displayed on the sub-display
  • the present invention uses a dual monitor having a main-display and a sub-display, in which a data processing work in the computer is displayed via the main-display and a TV signal is displayed via the sub-display, to thereby enable a user to watch the TV while performing a computer work without any inconveniences .
  • the TV signal can be displayed via any one selected from the main-display and the sub-display. Also, using the protection signal can control whether or not the dual monitor is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Computer Graphics (AREA)
  • Databases & Information Systems (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

A TV displaying system in a computer having a main-display and a sub-display is provided in which the right of using the monitor is restricted. The system includes first and second video cards respectively for converting first and second screen data outputs from a computer into first and second video signals, a TV tuner for receiving and outputting a TV signal, first and second video mixers respectively for mixing the first and second video signals and the TV signal, a monitor having a main-display for displaying a first mixed signal and a sub-display for displaying a second mixed signal, and a monitor controller for controlling the first and second video mixers.

Description

TV DISPLAYING SYSTEM FOR COMPUTER USING DUAL MONITOR HAVING MAIN-DISPLAY AND SUB-DISPLAY
Technical Field The present invention relates to a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, and more particularly, to a system for displaying TV signals on a computer using a dual monitor having a main-display and a sub-display in which the dual monitor and a TV reception card are added in the computer, and the right of using the monitor can be limited.
Background Art
In general, a TV tuner card having a television broadcasting reception function should be installed in a computer in order to receive and watch television signals using the computer.
Meanwhile, if a user wishes to watch TV signals on a computer using an existing single monitor, the whole screen of the monitor should be used as a TV screen or part of the monitor screen should be shared as a TV screen.
Thus, in the case that a user watches the TV while performing a separate particular work, a working screen becomes smaller, which lowers a working ability.
Disclosure of the Invention
To solve the above problems, it is an object of the present invention to provide a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, in which a user can watch the TV through a separate monitor while performing a separate work using a computer.
It is another object of the present invention to provide a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, in which user management is convenient through a function of controlling whether or not TV signals output from any one monitor of a dual monitor are displayed.
To accomplish the above object of thepresent invention, there is provided a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, the TV displaying system comprising: a first video card for converting first screen data output from a computer into a first video signal and outputting the first video signal-; a second video card for converting second screen data output from the computer into a second video signal and outputting the second video signal; a .TV tuner for receiving and outputting a TV signal; a first video mixer for mixing the first video signal output from the first video card and the TV signal output from the TV tuner and outputting a first mixed signal; a second video mixer for mixing the second video signal output from the second video card and the TV signal output from the TV tuner and outputting a second mixed signal; a monitor having a main-display for displaying the first mixed signal output from the first video mixer and a sub-display for displaying the second mixed signal output from the second video mixer; and a monitor controller for controlling the first and second video mixers in order to synthesize the TV signal with any one of the first and second video signals.
Also, the -TV displaying system further comprises a monitor protector for selectively limiting the TV signal output from any one of the first and second video mixers, in which the monitor protector limits the output of the TV signal according to whether or not a protection signal is included in the TV signal.
The protection signal is added in the TV signal for transmission. The monitor protector controls whether the first and second signals respectively output from the first and second video mixers are output using a release code input from the computer, for releasing a protection function.
Also, the present invention can restrict a user ' s access by using the protection signal and a release code, when a user gains access to an Internet website using the computer.
The second video card can be implemented by a USB video card for converting the second screen data output via a USB port in the computer into the second video signal.
As described above, the present invention uses a dual monitor having a main-display and a sub-display, in which a data processing work in the computer is displayed via the main-display and a TV signal is displayed via the sub-display, to thereby enable a user to watch the TV while performing a computer work without any inconveniences.
Further, the TV signal can be displayed via any one selected from the main-display and the sub-display. Also, using the protection signal can control whether or not the dual monitor is used.
Brief Description of the drawings
The above objects and other advantages of the present invention will become more apparent by describing the preferred embodiments thereof in more detail with reference to the accompanying drawings in which:
FIG.1 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a first embodiment of the present invention;
FIG.2 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a second embodiment of the present invention;
FIG. 3 is a flowchart view for explaining a protection process in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention; and FIG.4 is a flowchart view for explaining a TV displaying method in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention.
Best Mode for Carrying out the Invention
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings .
FIG. 1 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a first embodiment of the present invention. FIG.2 is a block diagram showing a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to a second embodiment of the present invention. FIG.3 is a flowchart view for explaining a protection process in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention. FIG. 4 is a flowchart view for explaining a TV displaying method in a TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, according to the present invention.
A dual monitor 20 used in the present invention includes a main-display 22, for example, having a 17" screen or so which provides a relatively larger display region and a sub-display 24, for example, having an 8" screen or so, which provides a relatively smaller display region.
As shown in FIG. 1 showing a first embodiment of the present invention, the main-display 22 displays a first video signal supplied from a first VGA card 15 installed in a PCI slot or an AGP slot in a computer 10. The sub-display 24 displays a second video signal supplied from a second VGA card 13 installed in another slot.
Meanwhile, a TV tuner 40 receives a television signal under the control of the computer 10 and outputs the received television signal, in which the output signal can be selectively displayed on the main-display 22 or the sub-display 24.
For this purpose, the output signal from the TV tuner 40 is synthesized with the output signal from the first VGA card 15 or the second VGA card 13 by first and second video mixers 30 and 35, respectively. The operations of the first and second video mixers 30 and 35 are controlled by a monitor controller 42 which is controlled by the computer 10 via an I/O port 11.
Here, in the case that the second VGA card 13 is not connected to the computer 10, or to the sub-display 24, the monitor protector 44 detects whether the second VGA card 13 is not connected to the computer 10, or to the sub-display 24, and transfers the detected result to the monitor controller 42. Then, the monitor controller 42 stops the output of the second video mixer 30. Meanwhile, the monitor 20 is configured by a main-display 22 and a sub-display 24, so that a TV broadcasting received via the TV tuner 40 can be selectively displayed on the main-display 22 or the sub-display 24, so that a user can watch the displayed TV broadcasting, in which case a TV broadcasting received via the TV tuner 40 need to be limited.to particular persons so that they cannot watch it.
For this purpose, a protection signal Sp is added in a TV signal for transmission, in order to enable the monitor to operate at a protection mode. The protection signal Sp is detected via the monitor protector 44. The monitor controller 42 uses the detected protection signal Sp, and thus limits the output of the TV signal among the first and second video mixers 30 and 35.
Then, in order to activate the operation of the first or second video mixer 30 or 35 whose output has been limited, a release code for releasing the protection signal Sp is used.
In other words, a release code is provided to a user using the computer 10, and then if the user inputs the release code into the computer 10, a TV signal added with the protection signal Sp is output via any one of the first and second video mixers 30 and 35.
Thatis, as shown in FIG.3, a TVsignal canbe transmitted and received at a protection mode or a non-protection mode. In the case that a TV signal is transmitted and received at a protection mode, it is checked whether a current mode is a protection mode (S10) . If the current mode is a protection mode, the monitor protector 44 confirms whether a protection signal Sp is detected from the TV signal (Sll) . Then, it is checked whether a release code is input by a user (S12) . In the case that a release code has been input, the monitor controller 42 synthesizes the TV signal output from the TV tuner 40 with any one of the first and second video signals selected by a user, using any one of the selected first and second video mixers 30 and 35 (S13) , and displays the synthesized result on the main-display 22 or the sub-display 24. Meanwhile, if the current mode is not a protection mode in the result of confirmation in the protection mode confirmation step (S10), the TV signal is synthesized with the first or second video signal via the selected first or second video mixer 30 or 35. In addition, if the protection signal Sp is not detected or any release code is not input, the selected first or second video mixer 30 or 35 is turned off so that any video signal is not output.
The above-described protection signal Sp and the release code can be applied to a pay cable TV broadcasting reception system. In the case of an ordinary cable TV broadcasting for transmission, a broadcasting signal is scrambled through a scrambler and then the scrambled broadcasting signal is transmitted. Then, the scrambled broadcasting signal is discrambled through a discrambler installed in a cable TV set-top-box to thereby enable users to watch the broadcasting. Thus, in the case that a user intends to watch a broadcasting such as a cable TV, using a personal computer
(PC) , an existing set-top-box should be installed to watch the broadcasting, which inconveniences users. However, the present invention adds a protection signal
Sp in a broadcasting signal and transmits the protection signal added broadcasting signal, and then provides a user with a release code for releasing the protection of the broadcasting signal. Accordingly, only a user who has been provided a release code can watch a broadcasting signal.
Also, when a user using the computer 10 accesses an information providing server which provides various information via the Internet, a protection signal is added and then transmitted so that data can be provided only in the case that a user is registered as a member in a corresponding website. Accordingly, the present invention can provide information to users with a thorough security.
In particular, the present invention can be applied to a website which provide adult information to which children or juveniles are prevented from approaching or a website which provides paid information, very efficiently.
Recently, member registration information cracked by a cracker is used to access a website illegally without paying any membership fees in order to use pay site information, which occurs very often. In this case, the present invention can be applied as a very proper method.
Meanwhile, the TV signal output from the TV tuner 40 varies in view of a screen in size according to a monitor displayed. That is, a resolution varies according to the size of the monitor display.
For example, in the case that a main-display 22 is a 17" screen and a sub-display 24 is an 8" screen, the TV signal need to be zoom-in or zoom-out processed in order to adjust a resolution according to the selected first or second video mixer 30 or 35, which enables the size of the screen to coincide with each other. For this purpose, as shown in FIG. 4, it is checked whether or not the TV tuner 40 operates (S20) . Then, it is checked whether a displayed monitor is the main-display 22 or the sub-display 24 (S21) .
As a result, if the monitor displayed is the main-display 22, the TV signal is zoom-out processed (S22) , to meet the screen size of the main-display 22, so that is canbe displayed on the main-display 22 (S23) . Ifthemonitor displayed is the sub-display 24, the TV signal is zoom-in processed (S25) to meet the screen size of the sub-display 24, so that is can be displayed on the sub-display 24 (S26) .
Meanwhile, although the first and second VGA cards 15 and 13 are used to output the first and second video signals which are displayed on the main-display 22 and the sub-display
24 in the first embodiment, a USB VGA card 14 receives video data which is input via a USB port 12 in the computer 10, and converts the received video data into a video signal, in the second embodiment of the present invention as shown in FIG. 2, instead of the second VGA card 13. The other components of FIG. 2 have the same names and functions as those of the first embodiment of FIG. 1.
Referring to FIG. 2, a sub-display 24 has a smaller number of data displayed than that of a main-display 22. Accordingly, A USB VGA card 14 receives video data via a USB port 12 and converts it into a second video signal . Then, the second video signal is input to a second video mixer 35. The second video signal input in the second video mixer 35 is synthesized or not synthesized with a TV signal according to a user selection, to then be displayed on the sub-display 24.
Here, for reference, a data transmission rateper second in the USB port 12 will follow in comparison with other connection systems.
A USB has two kinds of transmission rates such as 12Mbits (high speed) and 1.5Mbits (low speed). A serial port has a transmission rate of 115Kbits (=0.115Mbits) . A standard parallel port has a transmission rate of 115Kbits (=0.115Mbits) . An ECP/EPP parallel port has a transmission rate of 3Mbytes. An IDE has a transmission rate of 3.3~16.7Mbytes . A SCSI has a transmission rate of 5Mbytes or lOMbytes.
Thus, the USB port 12 has a sufficient transmission rate so that video data can be displayed on the sub-display
24 having an 8" screen. In particular, although other peripheral devices, for example, a keyboard or mouse is connected to the USB port 12, since an amount of data necessary for enabling them to operate is relatively small, video data displayed on the sub-display 24 can be transmitted without any burden .
Industrial Applicability
As described above, the present invention uses a dual monitor having a main-display and a sub-display, in which a data processing work in the computer is displayed via the main-display and a TV signal is displayed via the sub-display, to thereby enable a user to watch the TV while performing a computer work without any inconveniences .
Further, the TV signal can be displayed via any one selected from the main-display and the sub-display. Also, using the protection signal can control whether or not the dual monitor is used.
In other words, although the present invention has been describedwith respect to particularlypreferred embodiments, it is not limited in the above-described embodiments. It is apparent to one who is skilled in the art that there are many variations and modifications, without departing off the spirit of the present invention.

Claims

Claims
1. A TV displaying system for use in a computer using a dual monitor having a main-display and a sub-display, the TV displaying system comprising: a first video card for converting a first screen data output from a computer into a first video signal and outputting the first video signal; a second video card for converting a second screen data output from the computer into a second video signal and outputting the second video signal; a TV tuner for receiving and outputting a TV signal; a first video mixer for mixing the first video signal output from the first video card and the TV signal output from the TV tuner and outputting a first mixed signal; a second video mixer for mixing the second video signal output from the second video card and the TV signal output from the TV tuner and outputting a second mixed signal; amonitor having amain-display for displaying the first mixed signal output from the first video mixer and a sub-display for displaying the second mixed signal output from the second video mixer; and a monitor controller for controlling the first and second video mixers in order to synthesize the TV signal with any one of the first and second video signals.
2. The TV displaying system of claim 1, further comprising a monitor protector for selectively limiting the TV signal output from any one of the first and second video mixers .
3. The TV displaying system of claim 2, wherein said monitor protector limits the output of the TV signal according to whether or not a protection signal is included in the TV signal.
4. The TV displaying system of claim 2 or 3, wherein the protection signal is added in the TV signal for transmission, and wherein said monitor protector controls whether the first and second signals respectively output from the first and second video mixers are output using a release code input from the computer, for releasing a protection function.
5. The TV displaying systemof claim3, wherei auser ' s access is restricted by using the protection signal and a release code, when a user gains access to an Internet website using the computer.
6. The TV displaying system of claim 1, wherein said second video card is a USB video card for converting the second screen data output via a USB port in the computer into the second video signal.
7. The TV displaying system of claim 1, wherein said
TV tuner processes zooming-out or zooming-in of the TV signal to meet a size of the selected screen among the main-display and the sub-display and outputs the zoom-out or zoom-in processed TV signal.
PCT/KR2001/001380 2000-08-14 2001-08-14 Tv displaying system for computer using dual monitor having main-display and sub-display Ceased WO2002015573A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001278810A AU2001278810A1 (en) 2000-08-14 2001-08-14 Tv displaying system for computer using dual monitor having main-display and sub-display

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2000-0047011A KR100378916B1 (en) 2000-08-14 2000-08-14 TV Display System Using Dual Monitor
KR2000/47011 2000-08-14

Publications (1)

Publication Number Publication Date
WO2002015573A1 true WO2002015573A1 (en) 2002-02-21

Family

ID=19683146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2001/001380 Ceased WO2002015573A1 (en) 2000-08-14 2001-08-14 Tv displaying system for computer using dual monitor having main-display and sub-display

Country Status (3)

Country Link
KR (1) KR100378916B1 (en)
AU (1) AU2001278810A1 (en)
WO (1) WO2002015573A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1653371A3 (en) * 2004-11-02 2007-10-31 GILARDONI S.p.A. Electronic system for the transfer of digital data strictly in real time

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050082268A (en) * 2004-02-18 2005-08-23 탑헤드 주식회사 System for information application using of the tv receiving monitor and method thereof
KR100854824B1 (en) * 2006-08-01 2008-08-27 엘지전자 주식회사 Apparatus and method for displaying recording list of video display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485221A (en) * 1993-06-07 1996-01-16 Scientific-Atlanta, Inc. Subscription television system and terminal for enabling simultaneous display of multiple services
KR19980016023U (en) * 1996-09-13 1998-06-25 김광호 Knob Stroke Adjuster for Video Tape Recorders
KR19980026698U (en) * 1996-11-12 1998-08-05 김광호 Cellphone system with keypad for steering wheel attachment
US6025884A (en) * 1996-08-16 2000-02-15 Samsung Electronics Co., Ltd. Multimedia display monitor apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100197837B1 (en) * 1995-09-14 1999-06-15 윤종용 Apparatus for displaying outside signal and information using double screen
KR200281230Y1 (en) * 1997-01-30 2002-11-22 엘지전자주식회사 TVs with multiple displays
KR100247405B1 (en) * 1997-07-14 2000-03-15 전주범 Multi-screen television with subscreen displayed on double screen
JP2000181423A (en) * 1998-12-18 2000-06-30 Kyocera Corp Multi-monitor
KR20000042734A (en) * 1998-12-26 2000-07-15 전주범 Game control method of double window television

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485221A (en) * 1993-06-07 1996-01-16 Scientific-Atlanta, Inc. Subscription television system and terminal for enabling simultaneous display of multiple services
US6025884A (en) * 1996-08-16 2000-02-15 Samsung Electronics Co., Ltd. Multimedia display monitor apparatus
KR19980016023U (en) * 1996-09-13 1998-06-25 김광호 Knob Stroke Adjuster for Video Tape Recorders
KR19980026698U (en) * 1996-11-12 1998-08-05 김광호 Cellphone system with keypad for steering wheel attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1653371A3 (en) * 2004-11-02 2007-10-31 GILARDONI S.p.A. Electronic system for the transfer of digital data strictly in real time

Also Published As

Publication number Publication date
AU2001278810A1 (en) 2002-02-25
KR100378916B1 (en) 2003-04-08
KR20020013313A (en) 2002-02-20

Similar Documents

Publication Publication Date Title
US6574095B2 (en) Input device having keyboard and touch pad
EA003599B1 (en) Data processing system using a dual monitor and controlling method of network system thereby
JPH07222073A (en) Video signal controller, display system, method and video display device for displaying plurality of video signals
US20050091553A1 (en) Security system and method
US20040189624A1 (en) Method and system for controlling a display device
US5960172A (en) Digital computer system security device
US20030227490A1 (en) Control apparatus and method of display device
EP3094070A1 (en) Program, information processing device, and image processing system
US20070266397A1 (en) Multimedia display apparatus with add-on personal computer functions capable of entering keyboard keys with remote control
WO2002015573A1 (en) Tv displaying system for computer using dual monitor having main-display and sub-display
KR20130034712A (en) Apparatus for displaying and method for displaying imaging thereof
US6047121A (en) Method and apparatus for controlling a display monitor in a PC/TV convergence system
KR20040047345A (en) data broadcasting assistance system by using bidirection remote controller and the method
US20070106959A1 (en) Multi Internet Video Card
US8001173B2 (en) Information processing apparatus, selector, remote operation system, scan code transmission method, and program product therefor
US5839095A (en) Multimedia control center for controlling peripheral devices of a personal computer
JPH11327867A (en) Computer control device using set-top box
EP1961218B1 (en) Display apparatus and method and information processing apparatus and method for providing picture in picture function
US20070147679A1 (en) Network display apparatus, computer, and method of controlling the computer
JP3612690B2 (en) Information display control device and information display control method
US20070266418A1 (en) Multimedia display apparatus with add-on personal computer functions capable of entering keyboard keys with remote control
WO2000025199A1 (en) Portable interactive presentation device
CN100585660C (en) Switching Devices and Data Transfer Methods
JP2002353918A (en) Data broadcast receiving device and data broadcast receiving method
EP1246053A1 (en) Communication module

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP