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WO2012100660A1 - Dispositif d'accueil pour projection en mode double pour des dispositifs électroniques portables - Google Patents

Dispositif d'accueil pour projection en mode double pour des dispositifs électroniques portables Download PDF

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Publication number
WO2012100660A1
WO2012100660A1 PCT/CN2012/000127 CN2012000127W WO2012100660A1 WO 2012100660 A1 WO2012100660 A1 WO 2012100660A1 CN 2012000127 W CN2012000127 W CN 2012000127W WO 2012100660 A1 WO2012100660 A1 WO 2012100660A1
Authority
WO
WIPO (PCT)
Prior art keywords
projection
display apparatus
specified
screen
projection display
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/CN2012/000127
Other languages
English (en)
Inventor
Yongjing Wang
James LUPINO
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.)
Individual
Original Assignee
Individual
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
Priority claimed from CN2011100869865A external-priority patent/CN102186042A/zh
Priority claimed from CN201120099872XU external-priority patent/CN202075661U/zh
Application filed by Individual filed Critical Individual
Publication of WO2012100660A1 publication Critical patent/WO2012100660A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability

Definitions

  • the invention generally pertains to an output and input system for portable electronic devices and more particularly to a new docking system based on a dual mode projection device and keyboard.
  • Projection display technology has advanced in recent years such that their size and weight have reached the stage that incorporation of such devices in portable devices has occurred.
  • Such pico-projectors' are envisioned to ultimately be embedded into smartphones to enable a larger screen display for the user.
  • Several handheld or tethered pico-proj ector products are available in the marketplace including devices from such firms including 3M, Aiptek, Microvision, and others.
  • One of the problems of pico-projectors is the requirement that a usable surface must be available for the projection display. In a conference room or in the home, this may not be a problem; however, in public spaces such as when a person is on travel for business or otherwise, finding a suitable projection screen is difficult at best.
  • the stand-alone tethered pico-projector provides at times for larger display of the smartphone display, it does not contribute to improving productivity of the data input function on the limited keyboard and screen size of the smartphone.
  • the present invention discloses an apparatus that provides large screen output display and a ; method for improved input for portable electronic devices, mainly for smartphones that have significant processing power.
  • the apparatus comprises
  • the projection screen is one piece monolithic rigid screen.
  • the projection screen is of the type that can be rolled up or folded into a compact size to further reduce the carry-on size of the system.
  • a key object of the invention is to provide an ultra- portable device which is highly efficient in power consumption.
  • projection display provides similar brightness on a notebook size (9-15") display for at least a 70% reduction in power consumption. Therefore, projection technology is ideally suited for ultra-low power consuming displays.
  • the added advantage of projection is the ability to project at different sizes depending on the projection screen options available.
  • the apparatus further comprise a moveable mechanism that can switch the projector from projecting onto the built-in projection screen to projecting onto an external screen or wall surface.
  • the projector works in dual modes. In the first projection mode, the apparatus produces a notebook-sized image onto the built-in projection screen for the single user.
  • the built-in screen may be either a rear projection screen or front projection screen, the size of which may be, but is no limited to, 9 to 15 inches.
  • the apparatus produces up to a 100 inch screen for multiple users onto an external projection surface not built into the apparatus.
  • Such external projection surface may be front projection screen, a wall or other surface, or rear projection screen
  • the projection lens of the projection display device is specially designed to produce a large image at short throw distance.
  • the projection lens is characterized as a short focal length lens.
  • the throw ratio ( R ) is defined as the throw distance ( L ) over the width of the image J(W ) .
  • R L / W .
  • the drawbacks of short focal length lens are 1) it typically has a large size; 2) it is more difficult to design therefore its cost is high. Therefore in conventional pico projection technology, the short focal length lens has not been used.
  • the projection lens produces a large image within short projection distance. Hence, a lower throw ratio from 0.1 to 5 is preferred.
  • the apparatus further comprises a keyboard for the user to input information productively.
  • the keyboard is a touch panel keyboard.
  • the keyboard layout is projected out by a projector and an image sensor is used to detect the movement of finger to register the input keys.
  • the mechanism in the present invention is designed to keep all components in a very compact package when the system is not operated and to ensure the display screen and projector are at the right positions when the system is in use.
  • the apparatus further is characterized by its electronic system without CPU, and operating system (OS) .
  • the apparatus cannot be used as a stand alone device. It becomes functional only after connected with a portable electronic device like a smartphone.
  • the projection display and keyboard both connect with the smartphone either via hard wire or wireless connection.
  • the apparatus includes a receiver which receives video signals from said portable electronic device. The. signal represents mirroring image of the display screen on the portable electronic device.
  • the dual mode projection system described herein may be applicable to other display applications including but not limited to TVs and monitors which provide a video signal to the projection display apparatus without requiring a smartphone or keyboard.
  • the invention is a true Green "Light" product because 1) users need not acquire duplicate computing and bandwidth resources as required in a notebook or tablet PC, 2) no data synchronization is needed between smartphone and computer, 3) picoprojection technology provides the highest power efficiency for display of notebook size images at high brightness, and 4 ) users need not acquire a separate projection display for large screen projection.
  • the invention enables a super smartphone for all applications .
  • Fig 1 (a) First embodiment working in first projection mode with a rear-projection screen configuration (b) First embodiment working in the second projection mode projecting on a wall surface
  • Fig 2 Second embodiment with a touch screen based an image sensor
  • Fig 3 Third embodiment with a touch screen keyboard
  • Fig 4 Fourth embodiment with a projection keyboard
  • the first embodiment of the apparatus is comprised of a projection device 101, a built-in rear or front projection screen 103, input device 105, and a wired or wireless connector 107 for input and output signal from and to a portable electronic device, preferably a smartphone.
  • a portable electronic device preferably a smartphone.
  • the apparatus comprises a receiver which receives video signals from said portable electronic device. The signal represents mirroring image of the display screen on the portable electronic device.
  • Said projection device produces a screen much larger than that provided on the smartphone display.
  • the input device 105 also is connected with the smartphone via hard wire or wireless. The user can use said input device to input information conveniently to the smartphone.
  • Said input device could be a traditional mechanical keyboard, a keyboard based on touch screen technology, or projection keyboard based on image sensor technology.
  • Said input device may further comprise of a touchpad, tracking ball or other similar device for data input to the smartphones.
  • connections for video and data between said apparatus and the smartphone can be physical hard wire or wireless connection.
  • the wireless connection may be based on any technology known to those skilled in the art such as bluetooth technology and WiFi technology.
  • Said projection device 101 further is characterized by dual operational modes whereby in the first projection mode, the image is projected onto the built-in screen which may be a rear or front projection screen, and in the second projection mode, a normally much larger image is projected onto an external projection surface (115) which may comprise of a rear projection screen, a front projection screen or a wall or other surface with acceptable reflectance and scattering properties.
  • the apparatus comprises either a mechanical means that can rotate the projection device at different angles or a mirror that can direct the light to different directions for the purpose of switching between the first and second modes of projection.
  • Said projection device 101 may further comprise a sensor that can detect the rear or front projection mode and modify the output image accordingly.
  • the apparatus comprises mechanical -.part 109 and 111 to ensure components from 101 to 107 are at their respective proper position in the operational stage.
  • the mechanical parts also ensure components from 101 to 107 are packaged together into a small footprint in the closed stage for portability.
  • 109 is a hinge.
  • the keyboard 105 can be folded into the base 111 to reduce the size of the apparatus for portability.
  • said mechanical part 111 further comprises a sliding mechanism.
  • Said sliding mechanism extends in the operational stage to keep the proper distance between the screen 103 and the projection device 101. When the apparatus is closed, said sliding mechanism returns back to original position to reduce the size of the apparatus in the non-operational stage.
  • the apparatus comprises a mechanical part 507.
  • 507 is designed such that the entire screen is raised above the level of the keyboard in the operational stage to ensure the proper distance and angle are established for the given parameters of the projection lens of the projector in the i operational stage.
  • 507 folds the screen 503 down to the top of the keyboard 505 and the projection device 501 to reduce the size of the apparatus in the non-operational stage.
  • said mechanical part 111 further comprises a mirror to fold the optical path between the projection device and screen to reduce the size of said apparatus in operational stage.
  • the input device is detachable.
  • the keyboard may be detached when the input function is not intensively required or the user prefers to be at a further distance from the projection device.
  • the projection device and input device operate independently and are provided power independently.
  • the apparatus further comprises software and/or hardware to register the movement of the smartphone as an input method.
  • the user uses the smartphone as a mouse.
  • the sensor inside the smartphone detects the movement of the smartphone.
  • Said movement of the smartphone is registered as position of a cursor.
  • the cursor is displayed on the image produced by said apparatus.
  • the apparatus comprises part 113 for battery, electronics driving board, and speakers.
  • the projection screen 103 is of the type that can be rolled up or folded into a compact size to further reduce the carry-on size of the system.
  • Said projection device 101 comprises a projection lens
  • the projection lens is specially design to produce a large image at short throw distance.
  • Said projection lens is characterized as a short focal length lens.
  • the throw ratio is defined as the throw distance over the width of the image. A lower throw ratio from 0.1 to 5 is preferred.
  • the focal length of said projection lens is adjustable (zoomable) to accommodate the varying screen sizes between the first and seconde projection modes.
  • the adjustability of the focal length may be the result of changing the position ef the lenses in said projection lens or adding an add-on lens.
  • the power system may be configured to provide multiple power levels to the projection apparatus. For example, in the first projection mode, 1-3 watts of power may be sufficient to provide satisfactory luminance on the rear or front projection screen for the user. In the second projection mode, depending on ambient light and battery power level ⁇ or availability of supplemental power, the user may elect to supply additional power to the light engine to allow for satisfactory brightness on the screen.
  • the core advantages of the present invention include the flexibility of the dual purposed first and second projection mode display, multiple power level operation, light weight of the apparatus, and low cost.
  • the power system may be configured to provide through a wired connection, such as USB, power to the smartphone for charging or power to a cable such as an MHL to HDMI converter cable providing the video input to the apparatus from the smartphone.
  • a wired connection such as USB
  • MHL to HDMI converter cable providing the video input to the apparatus from the smartphone.
  • FIGURE 2 shows the second embodiment of the apparatus with a touch screen based on an image sensor where all numerals correspond to those elements previously described.
  • the second embodiment of the apparatus further comprises an image sensor 117 near ithe projection lens 115.
  • the image sensor may be a visual or IR image sensor based on CCD or CMOS technology.
  • the image sensor detects the movement of the finger tip of the user. The position and movement of finger tip are used to input information.
  • FIGURE 3 shows the third embodiment of the apparatus with a keyboard based on touch screen.
  • the third embodiment of the apparatus is comprised of a projection device 301, a built-in rear screen 303 and a wired or wireless connector 307 for input and output signal from and to a portable electronic device, preferably a smartphone.
  • the rear projection screen also serves as a touch 1 screen .
  • the smartphone outputs its screen to the projection device 301.
  • the projection device 301 produces images on the built-in projection screen 303.
  • 303 not only serves as a rear projection screen but also a touch input panel.
  • the touch panel could base on any technology known to those skilled in the art such as resistive based touch screen or capacitive based touch screen.
  • the touch screen is based on image sensor based CCD or CMOS technology as disclosed in second embodiment.
  • Part of the image displayed 311 is a dynamic keyboard. User uses the touch keyboard to input information.
  • the third embodiment of the apparatus is comprised of mechanical parts 305 and 309 ensuring all other components at right position.
  • 305 is a hinge so that 303 can be folded into to base 309 to increase the portability.
  • the projection screen 303 may be of the type that can be rolled up or folded into a compact size to further reduce the carry-on size of the system.
  • the fourth embodiment of the apparatus is comprised of a projection device 401, a built-in rear or front projection screen 403, another projector 405 that can project a keyboard 407 on a surface, an image sensor 409 that can detect the movement of fingers, and a wired or wireless connector 411 for input and output signal from and to a portable electronic device, preferably a smartphone.
  • This embodiment operates in the same manner as the first embodiment except that the input device is a projection keyboard rather than a physical keyboard.
  • the projector 405 projects a keyboard 407 on a surface.
  • the image sensor 409 detects the movement of fingers and registers the finger movement as input signal.
  • Projector 405 is normally a lower resolution, lower brightness projector compared to projector 401.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

La présente invention se rapporte à dispositif d'affichage à double mode de projection pour un dispositif électronique portable. Le dispositif d'affichage selon l'invention comprend : un dispositif de projection ; un écran intégré ; un dispositif d'entrée ; et un connecteur avec fil ou sans fil pour un branchement audit dispositif électronique portable. Le dispositif d'affichage selon l'invention possède un double mode de fonctionnement : dans le premier mode, il produit une image sur l'écran intégré ; dans le second mode, il produit une image sur une surface externe quelconque avec un niveau de réflectance/de dispersion sensiblement élevé. Quand il est connecté à un smartphone, le dispositif fournit un grand écran et un procédé d'entrée commode pour l'utilisateur. La présente invention permet d'améliorer la fonctionnalité et la commodité d'utilisation d'un smartphone.
PCT/CN2012/000127 2011-01-26 2012-01-29 Dispositif d'accueil pour projection en mode double pour des dispositifs électroniques portables Ceased WO2012100660A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US201161436492P 2011-01-26 2011-01-26
US61/436,492 2011-01-26
CN201110086986.5 2011-04-08
CN2011100869865A CN102186042A (zh) 2011-04-08 2011-04-08 双模投影显示及输入系统
CN201120099872.X 2011-04-08
CN201120099872XU CN202075661U (zh) 2011-04-08 2011-04-08 双模投影显示及输入系统

Publications (1)

Publication Number Publication Date
WO2012100660A1 true WO2012100660A1 (fr) 2012-08-02

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Application Number Title Priority Date Filing Date
PCT/CN2012/000127 Ceased WO2012100660A1 (fr) 2011-01-26 2012-01-29 Dispositif d'accueil pour projection en mode double pour des dispositifs électroniques portables

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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103941528A (zh) * 2013-01-18 2014-07-23 联想(北京)有限公司 一种模式切换的方法以及一种电子设备
CN105988503A (zh) * 2015-01-28 2016-10-05 鸿富锦精密工业(武汉)有限公司 电子装置底座
US9855351B2 (en) 2014-09-11 2018-01-02 Seoul Viosys Co., Ltd. Sterilization apparatus for portable electronic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060234784A1 (en) * 2004-12-21 2006-10-19 Silviu Reinhorn Collapsible portable display
US20060256144A1 (en) * 2005-05-11 2006-11-16 Chung Cheng H Portable computer with image-projecting function
CN102186042A (zh) * 2011-04-08 2011-09-14 王勇竞 双模投影显示及输入系统
CN202075661U (zh) * 2011-04-08 2011-12-14 王勇竞 双模投影显示及输入系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060234784A1 (en) * 2004-12-21 2006-10-19 Silviu Reinhorn Collapsible portable display
US20060256144A1 (en) * 2005-05-11 2006-11-16 Chung Cheng H Portable computer with image-projecting function
CN102186042A (zh) * 2011-04-08 2011-09-14 王勇竞 双模投影显示及输入系统
CN202075661U (zh) * 2011-04-08 2011-12-14 王勇竞 双模投影显示及输入系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103941528A (zh) * 2013-01-18 2014-07-23 联想(北京)有限公司 一种模式切换的方法以及一种电子设备
US9855351B2 (en) 2014-09-11 2018-01-02 Seoul Viosys Co., Ltd. Sterilization apparatus for portable electronic device
CN105988503A (zh) * 2015-01-28 2016-10-05 鸿富锦精密工业(武汉)有限公司 电子装置底座

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