KR20000033737A - Interface device of digital satellite broadcasting receiver - Google Patents

Abstract

The present invention relates to a digital satellite broadcast receiver, and more particularly, to an interface device of a digital satellite broadcast receiver for interfacing a digital satellite broadcast receiver and digital devices.

The present invention for this purpose, by performing the interface between the digital satellite broadcast receiver and the digital device through the PCMCIA slot, and by processing the transport stream data of the digital satellite broadcast receiver or MPEG data of the digital device by the P1394 data processing method, Not only can the MPEG stream provided from the device be reproduced in the digital satellite broadcast receiver, but also the signal received from the digital satellite broadcast receiver can be stored and utilized in the digital device.

Description

Interface device of digital satellite broadcasting receiver

The present invention relates to a digital satellite broadcast receiver, and more particularly, to an interface device of a digital satellite broadcast receiver for interfacing a digital satellite broadcast receiver and digital devices.

Satellite broadcasting transmits broadcast signals from ground stations (broadcasting earth stations) using satellites (communication satellites) located at altitudes of several tens to hundreds of kilometers above the earth's surface, providing broadcast signals to a wider area. A broadcast system capable of directly receiving a satellite broadcast signal transmitted from a satellite through a satellite broadcast antenna. In such a satellite broadcasting system, when a satellite broadcasting signal is received through a satellite broadcasting antenna, the signal is restored to a digital broadcasting signal in the form of a transport stream in a packet unit through a process of conversion to IF (Intemediate Frequency), demodulation, and error correction. The reconstructed digital broadcast signal is extracted from a broadcast signal of a selected channel among the digital broadcast signals received through a transport demultiplexor process, and then the extracted broadcast signal is decoded by a MPEG (Motion Picture Expert Group) method and displayed. It is configured to provide to the device.

The satellite broadcasting receiving system has a different feature from the conventional terrestrial broadcasting, and thus can receive a lot of channel information even in a narrow band, can solve the astigmatism area, and also provide program guide information for each channel. It is provided with a feature that allows the user to more conveniently select the desired broadcast program or channel by referring to the program guide screen for each channel.

1 is a block diagram of a general digital satellite broadcasting receiver, which is provided by a tuner and a demodulator 10, a tuner and a demodulator 10 that tune and demodulate a channel selected by a user and restore and provide a transport stream. A demultiplexer 11 which extracts and provides only a signal of a predetermined channel from a transport stream, an MPEG decoder 12 which decodes and provides a signal of a predetermined channel provided by the demultiplexer 11, and tuning and tuning a predetermined channel Program guide information provided by the digital satellite broadcasting provided by the control unit 13, the menu generation unit 14 storing a predetermined menu screen format, and the control unit 13 to control the overall processing of a signal. Memory 15 for storing, D / A converter 16 for converting the decoded audio signal provided from MPEG decoder 12 into an analog signal and outputting to a speaker, MPEG decoder 12 The NTSC encoder 17 converts the decoded video signal provided by the NTSC signal into the NTSC signal, and the menu screen provided by the menu generator 14 and the video signal provided by the NTSC encoder 17 under the control of the control unit 13. It is composed of an image synthesizing unit 18 to mix and provide to the display side.

A detailed operation description of the digital satellite broadcast receiver configured as described above is as follows.

The controller 13 provides a tuner and a demodulator 10 with a tuning control signal for tuning a predetermined channel according to a key operation when a key manipulation signal for tuning a predetermined channel is applied from a user. At this time, the tuner and demodulator 10 tunes a channel corresponding to the tuning control signal provided from the control unit 13 from the satellite broadcast signal received through the antenna and the intermediate frequency IF with respect to the broadcast signal of the tuned channel. After the conversion, demodulation, and error correction process to restore to the transport stream to provide to the demultiplexer (11). The demultiplexer 11 provides program guide information to the controller 13 from the transport stream provided by the tuner and the demodulator 10 under the control of the controller 13, and the video and audio signals of the tuned channel are MPEG. It is provided to the decoder 12.

That is, the control unit 13 stores the program guide information provided by the demultiplexer 11 in the memory 15 and transmits an operation signal for tuning a specific channel by the user based on the stored program guide information. It is used to tune a specific channel selected from the stream, and program guide information corresponding to each channel required by the user is configured on a menu screen and displayed on a monitor.

At this time, the menu generating unit 14 pre-stores various types of menu screen format information for configuring the program guide information as a menu screen, and the program guide information read from the memory 15 by the control unit 13. Is configured as a menu screen corresponding to a predetermined format and provided to the image synthesizing unit 18.

Meanwhile, the MPEG decoder 12 may perform variable length decoding on the compressed and coded video signal and the audio signal provided by the demultiplexer 11, for example, in consideration of the spatial and spatial correlation of the video signal. The digital audio signal is provided to the D / A converter 16 and the digital video signal is provided to the NTSC encoder 17 by reconstructing the original signal before encoding using decoding techniques such as inverse DCT, inverse quantization, and motion compensation. do. That is, the D / A converter 16 converts the digital audio signal provided from the MPEG decoder 12 into an analog audio signal and outputs the analog audio signal to the speaker, and the NTSC encoder 17 uses the digital image provided from the MPEG decoder 12. The signal is converted into an NTSC signal and provided to the image synthesizer 18.

Accordingly, the image synthesizing unit 180 mixes the image signal provided from the NTSC encoder 17, that is, the NTSC signal and the menu screen provided from the menu generator 14, to the display side under the control of the controller 13. .

A digital satellite broadcast receiver for displaying satellite broadcast signals received through an antenna by the above-described process may be used for other digital devices such as digital devices such as digital televisions, digital video cassette recorders, digital camcorders, personal computers (PCs), and the like. Could not receive the MPEG data provided from them.

On the other hand, PCMCIA (Personal Computer Memory Card International Association) is an interface of the Personal Computer Memory International Association, which is an optimal peripheral device that can be used in portable computers such as laptops. It is a new system. Peripherals currently allowed by the PCMCIA standard are used in most computer peripherals such as memory, hard disks, drives (HDDs), fax modems, LAN cards, music cards, data modems, emulators, controllers, and wireless modems. Can also be used as a conditional access system.

In addition, the P1394 interface method is a high speed serial interface standard, and is a method for interfacing serial devices by connecting digital devices with cables.

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and an object of the present invention is to interface with a satellite broadcast receiver and digital devices using a PCMCIA slot and a P1394 interface, so that the satellite broadcast receiver and other digital devices can transmit and receive to each other. The present invention provides an interface device of a digital satellite broadcast receiver.

The present invention for achieving the above object is a PCMCIA slot; A digital satellite broadcast receiver for restoring, demultiplexing and MPEG decoding the transport stream data of the satellite broadcast signal or demultiplexing and MPEG decoding the data of the digital device provided through the PCMCIA slot and displaying on the screen; And an interface device for interfacing data of the digital device to an inputable signal of the PCMCIA slot or for transmitting P1394 data of the transport stream data of the satellite broadcast signal provided through the PCMCIA slot to the digital device.

1 is a block diagram showing the configuration of a general digital satellite broadcast receiver,

2 is a block diagram illustrating a configuration of a digital satellite broadcast receiver for interfacing with digital peripheral devices according to the present invention.

<Description of the code | symbol about the principal part of drawing>

100: satellite broadcasting receiver 200: PCMCIA slot

300: interface device

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of an interface device of a digital satellite broadcast receiver for interfacing with external digital devices according to a preferred embodiment of the present invention, in a satellite broadcast signal or a digital device provided through a satellite broadcast receiving antenna. The satellite broadcasting signal provided through the digital satellite broadcasting receiver 100, the PCMCIA slot 200, and the PCMCIA slot 200 for processing and displaying the provided digital data may be interfaced with the digital device or the data of the digital device may be displayed in the PCMCIA slot ( The interface device 300 is configured to interface with the digital satellite broadcast receiver 100 through 200.

At this time, the digital satellite broadcast receiver 100 selects and displays the transport stream data or the digital device data provided from the tuner and demodulator 101, the tuner and demodulator 101, which restores the satellite broadcast signal to a transport stream. First control unit 102, the control unit (110) for selecting and providing transport stream data provided by the tuner and demodulator 101 or transport stream data of the digital device under control of the control unit 110, the control unit 110 The PCMCIA slot 200 under the control of the second selector 108 and the controller 110 which select and provide transport stream data provided from the first selector 102 or MPEG data of the digital device under the control of 110. Or PCMCIA interface with digital device data provided through the PCMCIA interface or transmission stream data of the satellite broadcast signal provided by the second selector 108. Demultiplexing unit 103 for demultiplexing transport stream data provided from the first selecting unit 102 under control of the interface unit 109 and the control unit 110 faced, and demultiplexing under the control of the control unit 110. The third selector 104 which selects the transport stream data provided by the unit 103 or the MPEG data of the digital device provided by the second selector 108, which decodes the data by the third selector 104 The digital audio signal provided by the MPEG decoder 105 and the MPEG decoder 105 is converted into an analog signal and provided to a speaker by the D / A converter 106 and the digital video signal provided by the MPEG decoder 105 is an NTSC signal. It is composed of an NTSC decoder 107 which converts to and provides the display side to the display side.

The interface device 300 may include a cable port 305 for connecting a digital device to a cable, an interface unit 301 for interfacing the digital device data, or data of the satellite broadcasting receiver 100, and the digital device data or interface. Receive data from the P1394 data processing unit 303 and the P1394 data processing unit 303 provided by the P1394 data processing unit 303 and the data provided by the unit 301 to the cable port 305, and transmit the data to the cable port 305. And a transmission / reception unit 304 for receiving the digital device data provided through 305 and transmitting it to the P1394 data processing unit 303, and a microcomputer 302 for controlling the interface operation of the interface unit 301.

The interface between the digital satellite broadcast receiver and the digital devices configured as described above, that is, the transport stream data of the digital satellite broadcast receiver 100 may be transferred to an external device, for example, a digital video cassette recorder (DVCR), a digital television (DTV), or a personal device. A specific process for interfacing with a computer or the like to store and utilize the digital data or to reproduce the digital data of the digital devices in the digital satellite broadcasting receiver 100 is as follows.

First, in order to tune the satellite broadcast signal of a predetermined channel from the satellite broadcast signal received through the satellite broadcast receiving antenna in order to receive the satellite broadcast signal in the digital satellite broadcast receiver 100, the tuner and the demodulator 101 are controlled by the controller. Select the channel corresponding to At this time, the tuner and demodulator 101 tunes the broadcast signal of a predetermined channel from the satellite broadcast signal received through the antenna under the control of the controller 110 and restores the satellite broadcast signal of the tuned channel into a transport stream. It is provided to the 1st selection part 102. FIG. At this time, the first selector 102 selects transport stream data of the satellite broadcast signal provided by the tuner and the demodulator 101 under the control of the controller 110 or is provided by the second selector 108. The transport stream data of the digital device is selected and provided to the demultiplexer 103.

In other words. The second selector 108 selects the transport stream data or the MPEG data of the digital device provided through the interface unit 109 under the control of the controller 110 to select the first selector 102 or the third selector. Provided at 104. In this case, the interface unit 109 may interface the digital device data provided through the PCMCIA slot 200 under the control of the controller 110 with the PCMCIA interface or the transport stream of the satellite broadcast signal provided from the second selector 108. The data is configured to interface with the PCMCIA.

At this time, the interface device 300, in order to interface with the data of the digital satellite broadcast receiver 100 and the data of the digital device, the data of the digital satellite broadcast receiver 100 provided through the PCMCIA slot 200 as described above The interface unit 301 performs a PCMCIA interface.

The interface unit 301 provides the data of the interfaced digital satellite broadcast receiver 100 to the P1394 data processor 303, and the P1394 data processor 303 is a digital satellite broadcast receiver provided by the interface unit 301. The P1394 data is processed by the data of 100 and the physical signal is processed to transmit the cable from the transceiver 304 to the digital device through the cable port 305. Here, the cable port 305 and the digital device are connected by a cable.

On the contrary, the digital device data provided through the cable port 305 is physically signal-processed by the transceiver 304 to the P1394 data processor 303, and the P1394 data processor 303 is provided by the transceiver 304. The digital device data is processed by P1394 data and provided to the interface unit 301. In addition, the interface unit 301 PCMCIA interface the digital device data provided from the P1394 data processing unit 303 under the control of the microcomputer 302 to interface with the digital satellite broadcasting receiver 100 through the PCMCIA slot 200. 109).

Accordingly, the interface unit 109 may interface the digital device data provided through the PCMCIA slot 200 to the second selector 108 by PCMCIA interface under the control of the controller 110, and the second selector 108. Selects the digital device data under the control of the controller 110 and provides the digital device data to the third selector 104.

On the other hand, the demultiplexer 103 detects only the demultiplexed signal, i.e., the signal of a predetermined broadcast channel, from the transport stream data provided from the first selector 102, that is, the transport stream of the satellite broadcast signal or the transport stream data of the digital device. To the third selector 104. As described above, the third selector 104 selects transport stream data provided by the demultiplexer 103 or MPEG data of the digital device provided by the second selector 108 under the control of the controller 110 as described above. To the MPEG decoder 105. Accordingly, the MPEG decoder 105 MPEG-decodes the MPEG data provided from the third selector 104 and provides the MPEG data to the D / A converter 106 and the NTSC encoder 107, and the D / A converter 106. The digital audio signal provided from the MPEG decoder 105 is converted into an analog signal and provided to a speaker, and the NTSC encoder 107 converts the digital video signal provided from the MPEG decoder 105 into an NTSC signal and provided to a display side. .

As described above, the interface device according to the present invention not only can reproduce the MPEG stream provided from the external digital device in the digital satellite broadcast receiver by interfacing the digital satellite broadcast receiver and the digital device through the PCMCIA slot and the P1394 interface method. The present invention provides an effect of storing a signal received from a digital satellite broadcasting receiver in a digital device for use.

Claims (2)

PCMCIA slot; A digital satellite broadcast receiver for restoring, demultiplexing and MPEG decoding the transport stream data of the satellite broadcast signal or demultiplexing and MPEG decoding the data of the digital device provided through the PCMCIA slot and displaying on the screen; A digital satellite broadcasting device comprising: an interface device for interfacing data of the digital device to an inputable signal of the PCMCIA slot or providing a P1394 interface for transport stream data of the satellite broadcasting signal provided through the PCMCIA slot to the digital device; Receiver interface device. The method of claim 1, wherein the digital satellite broadcast receiver, A tuner and a demodulator for restoring a satellite broadcast signal into a transport stream, A control unit which controls to select and display the transport stream data or the digital device data provided from the tuner and the demodulator; A first selector which selects and provides transport stream data provided from the tuner and the demodulator or transport stream data of the digital device according to the control of the controller; A second selector which selects and provides transport stream data provided from the first selector or MPEG data of the digital device according to the control of the controller; An interface unit for PCMCIA interface of digital device data provided through the PCMCIA slot or PCMCIA interface of transport stream data of the satellite broadcast signal provided from the second selector under control of the controller; A demultiplexer for demultiplexing transport stream data provided from the first selector under control of the controller; A third selector which selects transport stream data provided by the demultiplexer or MPEG data of the digital device provided by the second selector under control of the controller; An MPEG decoder for MPEG decoding data in the third selector, A digital audio signal provided from the MPEG decoder is converted into an analog signal and provided to a speaker; And an NTSC decoder configured to convert a digital video signal provided by the MPEG decoder into an NTSC signal and provide the same to a display side.