WO2007087752A1 - Procédé et appareil d'entrée destiné à l'affichage par projection, système d'affichage par projection pourvu de cet appareil - Google Patents

Procédé et appareil d'entrée destiné à l'affichage par projection, système d'affichage par projection pourvu de cet appareil Download PDF

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Publication number
WO2007087752A1
WO2007087752A1 PCT/CN2007/000303 CN2007000303W WO2007087752A1 WO 2007087752 A1 WO2007087752 A1 WO 2007087752A1 CN 2007000303 W CN2007000303 W CN 2007000303W WO 2007087752 A1 WO2007087752 A1 WO 2007087752A1
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WO
WIPO (PCT)
Prior art keywords
projection display
display screen
light beam
projection
signal
Prior art date
Application number
PCT/CN2007/000303
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English (en)
Chinese (zh)
Inventor
Cheng Zhang
Original Assignee
Jbc Photonix Inc.
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 Jbc Photonix Inc. filed Critical Jbc Photonix Inc.
Publication of WO2007087752A1 publication Critical patent/WO2007087752A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0386—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry for light pen

Definitions

  • the present invention relates to an input method for a projection display, and more particularly to a wireless input method and an input device and apparatus for implementing the same.
  • the displayed image data in addition to the simple one-way playback, with the advancement of technology, two-way communication is gradually adopted. Whether it is a speech, a conference or a video game, it is necessary to add or modify the display data in real time, or reverse the screen. Enter data into the system host.
  • a touch panel can be set on the surface of the screen for direct input.
  • the keyboard, mouse, or joystick can also use the wireless transmission methods such as infrared, radio wave, and Bluetooth to input control data.
  • the above-mentioned method of inputting peripheral devices limits the number of users on the one hand.
  • the input device In a multi-person conference, the input device must be transmitted to each speaker for temporary use in order to allow each person to express opinions; and the host cannot automatically distinguish this. Who is the operator, causing troubles after the record.
  • the input process is to first input the signal command into the host, and then operate through the host, and the tweezer is presented on the display screen, and the speaker or the lecturer is not allowed to stand directly in front of the screen, and directly refers to the screen and directly feeds the input on the screen.
  • - Figure 1 is a Chinese Patent Publication No. 237152, which discloses a projection apparatus and an image acquisition method. The method is to align a whiteboard with a digital camera in step 11 and project an image data in step 12.
  • the whiteboard To the whiteboard, at this time, it is allowed to write characters and numbers on the whiteboard corresponding to the projected image data, and then the projection is removed at step 13, so that only the written characters and numbers are saved on the whiteboard for photography storage, and in step 14
  • the written data is integrated with the originally projected image data to become new stored data.
  • a complete corresponding compensation window 203 is created and stored, and the projected image is shifted, reduced, rotated, or unequally scaled and weakened according to the command, such as position deviation, image oversize, image tilt, and over-brightness.
  • this architecture only allows the image capture device to be used as a projection environment before projecting the image data. It is not used at the time of power-on calibration and compensation form creation.
  • the function of the image capturing device is more fully utilized. For example, during operation projection, it is used properly as an image input device, and the measured image data is fed back to the signal processing device. In the case of increased cost, the real-time input function of the projection display is further enhanced to effectively improve product performance.
  • One of the technical problems to be solved by the present invention is to provide a projection display input method that can be input in real time.
  • the second technical problem to be solved by the present invention is to provide a step-by-step projection display input method without any additional steps of clearing the projected image data.
  • a third technical problem to be solved by the present invention is to provide a projection display input method that can distinguish an input person.
  • the fourth technical problem to be solved by the present invention is to provide a two-way interactive projection display input method.
  • a fifth technical problem to be solved by the present invention is to provide a projection display device that can be input in real time.
  • the sixth technical problem to be solved by the present invention is to provide a projection display device with a simple structure. : ';
  • the technical problem to be solved by the present invention; the problem is to provide an inexpensive projection display input device. ' . ,
  • Eighth of the technical problem to be solved by the present invention is to provide a projection display input device that can distinguish an input person. ' . .
  • a ninth technical problem to be solved by the present invention is to provide a projection display input device capable of two-way interaction.
  • a tenth problem to be solved by the present invention is to provide a projection display system having the above input device.
  • an input device for a projection display having a signal processing device, a light source, a light machine and a display screen; the projection display according to a data signal input to the signal processing device Modulating an output of the optical machine and projecting corresponding image data to the display screen, the input device comprising:
  • a beam indicating device for projecting to the display screen, and a diverging cross-sectional dimension of the emitted light beam is much smaller than a projection distance thereof, such that when the emitted light beam is irradiated onto the display screen, the illumination
  • the maximum brightness within the area is greater than the maximum brightness from the optomechanical
  • an image capture device for capturing the display image and outputting to the signal processing device; accordingly, the emitted light beam from the light beam indicating device and projected onto the display screen is ingestible And separated from the image data.
  • the input device for a projection display according to the present invention further has the following subsidiary technical features:
  • the beam indicating device is a laser pointer
  • the beam indicating device is a light emitting diode indicator.
  • the beam indicating device also has an emission state selection member for controlling the emission state of the emitted light beam.
  • the launch status selector is a plurality of buttons.
  • the beam indicating device also has a set of transmit beam energy attenuating loops that are controlled in accordance with the selection of the launch state selector. 4.
  • the beam indicating device also has a set of transmit beam timing modulation loops that are controlled in accordance with the selection of the launch state selector.
  • the image capture device includes a camera.
  • the beam indicator emits a light beam having a center wavelength
  • the image capture device further includes a band pass filter disposed in front of the camera, the pass frequency of the filter including the center wavelength.
  • the camera is a color camera.
  • an image data corresponding to the projection is output according to an input data signal
  • the projection display system comprises:
  • a signal processing device that receives the data signal and outputs a spatially modulated signal; a light source that emits an original beam;
  • An optical machine driven by the spatially modulated signal to modulate the original light beam to and corresponding to the data signal; a display screen illuminated by the projection beam;
  • a beam indicating device for projecting to the display screen, and a diverging cross-sectional dimension of the emitted light beam is much smaller than a projection distance thereof, such that when the emitted light beam is irradiated to the display screen, a maximum brightness within the illuminated area is greater than The maximum brightness of the light machine;
  • An image capture device for accommodating the image data on the display screen and outputting to the signal processing device; accordingly, the emitted light beam from the light beam indicating device and projected onto the display screen is Ingested and separated from the image signal.
  • the projection display apparatus further has the following technical feature - the beam indicating means is a plurality of beam indicators, and the emitted light beams of each of the beam indicators respectively have different center wavelengths and transmission bands.
  • the image capture device further includes a band pass filter disposed in front of the camera, the pass frequency of the filter including the center wavelength.
  • the image capture device also includes a wavelength identification component for distinguishing the center wavelengths of the respective beam indicators. ,
  • Each of the beam indicators further has a plurality of buttons for controlling the emission states of the respective emitted light beams and a set of frequency shifting components for respectively selecting the center wavelengths of the emitted beams in the respective transmission bands corresponding to the buttons.
  • a real-time projection display method is provided for a projection display system, the system comprising a signal processing device, a light source emitting an original beam, a light machine, a display screen, and a diverging cross-sectional dimension of the emitted beam is much smaller than a beam pointing device that projects a distance and whose emitted beam has a center wavelength and an image capturing device that is calibrated for the ingestion of the display image data, the method comprising the steps of:
  • the maximum brightness in the irradiation area is greater than the maximum brightness of the optical machine. Can be easily identified by the image capture device.
  • the beam indicating device output signal projected on the display screen can be fed back into the processing device in real time, and the subsequently projected image data can be immediately changed according to a predetermined processing manner for two-way real-time communication;
  • a game joystick for computer games, etc. as a wireless input device with a simple structure and low price;
  • a plurality of participants can also hold a beam indicating device, and each of the beam indicating devices has a different wavelength of the center of illumination, so as to distinguish each use Entering data and recording it completely solves all of the aforementioned technical problems.
  • 1 is a flow chart of a conventional projection image acquisition method
  • Figure 2 is a perspective view of U.S. Patent No. 6,456,339, which shows how to calibrate with a camera and coordinate the operation of four projectors;
  • Figure 3 is a block diagram of the structure of Figure 2; '
  • Figure 4 is a perspective view of U.S. Patent Application No. US 2005/0068419, which shows a pre-confirmation of the size of an object to be projected by a camera and correctly projected to a display screen of a predetermined size;
  • Figure 5 is a schematic structural view of a first preferred embodiment of the projection display system of the present invention
  • Figure 6 is a block diagram showing the structure of the preferred embodiment shown in Figure 5;
  • Figure ⁇ is a flow chart of a preferred embodiment of the real-time projection display method of the present invention.
  • Figure 8 is a circuit block diagram of a preferred embodiment of the input device of the present invention.
  • FIG. 9 is a top plan view showing a structure of a second preferred embodiment of the projection display system of the present invention.
  • FIG. 10 is a circuit block diagram showing a second preferred embodiment of the input device of the present invention.
  • Figure 11 is a timing chart showing the emission of the beam indicator of the preferred embodiment shown in Figure 9;
  • Figure 12 is a schematic view showing the structure of a third preferred embodiment of the projection display system of the present invention;
  • Figure 13 is a view showing the central illuminating wave of the light source of the input device in the preferred embodiment shown in Figure 12;
  • Figure 14 is a top plan view of the input device of the preferred embodiment of Figure 12;
  • LED beam indicator - Detailed implementation:
  • Input method and device for projection display of the present invention whether applied to, for example, LCOS investment
  • the 2007/000303 video display or DLP projection display can be implemented smoothly.
  • Each of the above projection displays has a spatial modulation module of a plurality of cells, and the spatial modulation module drives the light beam from the light source according to the received image data signal to make the light projected by each unit cell position.
  • the strength and weakness correspond to the above image data signal.
  • a rear projection electronic game machine system 4 having a casing 44 is exemplified, wherein the projection display system 4 includes a software for obtaining a signal processing device 40 for image data signals, a light source 431, a light source 432 driven by the image data driving signal output from the signal processing device 40, and a light source 432 for modulating the beam from the light source, and a projection beam for modulating the light beam by the light machine.
  • the light source 431 and the light machine 432 are defined as a general projector 43.
  • the input device of the first preferred embodiment of the present invention includes a CCD camera 41 disposed in the casing 44 and a laser pointer 45 for hand-held. Since the divergent cross-sectional dimension of the beam emitted by the laser diode in the laser pointer 45 is much smaller than the projection distance, the illuminating beam is very concentrated in a short distance, and its brightness is much higher than that projected by the optical machine 4324 in the area it illuminates. The image brightness to the display screen 42 can thus be easily discerned by the camera 41.
  • the camera 41 has clearly distinguished the image projection area projected onto the display screen 42, that is, the pixels projected to the actual positions of the display screen 42 from the optical machine 432. Which one corresponds to the pixel position, and which piece of data corresponding to the transmitted image data signal has been obtained and recorded in one-to-one correspondence.
  • the signal processing device 40 is caused to execute, for example, a shooting game software, and the signal processing device '40 outputs a spatially modulated signal according to the executed software result.
  • the light machine 432 modulates the original light beam from the light source 431 at step 52 and projects it onto the display screen 42 to present, for example, the background of the house, the road, the vehicle, and the active gangsters and hostages for the consumer to pull the gun in the hand.
  • the trigger of the laser pointer 45 emits a beam of light 46 against the gangster.
  • the CCD camera 41 in the casing 44 can easily pass through a preset brightness threshold to filter out the original Projection image, read the beam component emitted by the laser pointer 45 from the display screen 42 in step 53; and in step 54, align the alignment data according to the originally recorded position, and confirm the position illuminated by the emitted light beam 46, and For example, the position data is fed back to the signal processing device 40, and after receiving the feedback signal, the signal processing device 40 can determine the position of the laser shot according to the original software planning, whether the image of the gangster, the hostage, or the background vehicle is projected.
  • step 55 the picture elements of the gangsters, hostages, vehicles, etc., which are to be presented in the subsequent image data, will be changed, thereby modifying the spatial modulation signal to the optical machine 432, so that the optical machine
  • the image data output by the 432 modulation is instead projected to image such as a splash of a gangster or hostage wound, a corresponding fall, or a broken background window of the hit vehicle, and is then presented on the display screen 42.
  • the circuit of the laser pointer in this embodiment is as shown in FIG. 8, and includes a power source 451, a switch 452 connected to the trigger, a launch state selection member 453, and a Laser diode 454.
  • the emission state selection member 453 is selected from one of a plurality of emission states, whenever the switch 452 is turned on, the laser diode 454 will receive power from the power source 451 to emit a laser beam.
  • the emission state selection member 453 of the embodiment includes a toggle lever 455 disposed outside the laser pointer 45 as shown in FIG. 5, a switch 456 controlled by the toggle lever 455, and a set of emission beam energy attenuation loops. 457, when the game design allows three consumers to join at the same time, the toggle lever 455 can drive the switch 456 to switch between three predetermined positions, and the transmit beam energy attenuation loop 457 also has, for example, 0%, 15%, 30%, etc.
  • the emitted laser energy is 100% of the predetermined energy for the first player, the emitted energy is 85% for the second place, and the energy is only 70% for the third place, thereby
  • Each of the three players performs a laser pointer 45 with a different degree of attenuation of the emission intensity.
  • the image capturing by the CCD 41 and the signal processing device 40 determine that the scores of the correct shooting of the gangsters, who mistakenly hit the hostages, etc., can be Correctly identify the calculation.
  • the game player will be able to play the game completely wirelessly, without being limited by the fact that the input device must be subject to the signal transmission line, and therefore, the projection display system of the present invention
  • the projection display system of the present invention For example, as shown in FIG. 9, for example, four sets of projectors 43 ⁇ 43 2 , 43 3 , and 43 4 ′ may be employed, each of which bears a coverage of about 100 degrees, and a 360-degree surround image by edge overlap.
  • the segment is projected onto a circular display screen 42, and is respectively disposed on the roof of the near center of the display screen 42', for example, the same four sets of CCD cameras 41 ⁇ 41 2 ⁇ 41 3 ', 41 4 '
  • a 360-degree surround game console allows the player to play a full range of games on the display screen 42 in the center without worrying about being twisted or tripped by the transmission line after a rotation.
  • each of the beam indicators of the present embodiment has a transmission state selection member 453 including a switch 456' and a clock signal controller 457' in addition to the power source 451', the switch 452, and the LED 454.
  • the emission timing I of the first beam indicator is selectively switched to, for example, 00001, the timing II of the second beam indicator is 000101, and the third timing III is 001.
  • the same illuminating frequency for example, 600 nm
  • the structure provided by the present invention is also applicable to various occasions, as shown in the third embodiment of the projection display system of FIG. 12, in order to enable all participants to immediately identify different speakers in a meeting or discussion occasion. And its opinion, it is also possible to use light-emitting diode (LED) beam indicators 45, 45 2 ", 45 3 ", 45 4 " with different center emission wavelengths. As shown in Figure 13, it can be from 400 nm to In the visible range of 700 nm, it is easy to select, for example, LEDs having a plurality of illuminating center wavelengths whose center wavelengths are at least about 50 nm apart from each other, and filtered by a band pass filter disposed in front of the image capturing device to serve as an image capturing device. The color camera reads the projected beam of each wavelength in time.
  • LED light-emitting diode
  • each beam indicator 45" may also adopt different timings or different attenuation intensities as in the foregoing embodiments, respectively emulating, for example, the left and right buttons of the mouse 458" and the moving mouse up and down.
  • Button 459" and an input button 450" according to which each participant The conference participants can use their own dedicated indicators to signal the display on the display and read it by the image capture device for transmission to the processing device.
  • the meeting has authority control, for example, one of them is the plan moderator, and has the dominance of the plan, the remaining participants are only authorized to provide suggestions, and have no right to lead the plan; Only the beam of the beam indicator held by the plan moderator can correct the original display content, and the projection beams of all the other beam indicators can only be temporarily input and presented on the display by the processing device, but have no right to modify the actual content. Therefore, not only can the records be directly recorded and modified during the meeting, but also the permission of the plan host is not infringed, even if the plan host temporarily leaves, as long as he takes away his dedicated beam indicator, no data is tampered with. Security risks.
  • the input device can be wirelessly input data to the projection display system in real time to achieve two-way interaction; not only the steps are simple, the image data of the projection is not required to be deleted, and the original conference or game is not interrupted; and the structure is simple and used.
  • the devices are all existing hardware architectures, without complicated hardware and cost increase; in particular, the identity of the input person is easily discerned, and can even be further controlled as security identification, thereby solving various problems to be improved by the present invention. . ,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

L'invention concerne un appareil d'entrée (4) destiné à l'affichage par projection et comprenant un dispositif indicateur de position du faisceau (45), un projecteur (43), une caméra (41), un écran (42) et un dispositif de traitement de signaux (40). Le dispositif indicateur de position du faisceau (45) comprend un élément sélecteur d'état (453) permettant de sélectionner l'état d'émission du faisceau. Un circuit atténuateur (457) destiné à l'énergie du faisceau et un circuit modulateur (457') destiné à la séquence de commutation du faisceau permettant de commander l'état d'émission du faisceau.
PCT/CN2007/000303 2006-01-26 2007-01-26 Procédé et appareil d'entrée destiné à l'affichage par projection, système d'affichage par projection pourvu de cet appareil WO2007087752A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2006100026774A CN101008767A (zh) 2006-01-26 2006-01-26 投影显示器用输入方法及装置
CN200610002677.4 2006-01-26

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WO2007087752A1 true WO2007087752A1 (fr) 2007-08-09

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PCT/CN2007/000303 WO2007087752A1 (fr) 2006-01-26 2007-01-26 Procédé et appareil d'entrée destiné à l'affichage par projection, système d'affichage par projection pourvu de cet appareil

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102636940A (zh) * 2011-02-15 2012-08-15 亚洲光学股份有限公司 光学系统及具有该光学系统的电子装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107809628B (zh) * 2017-05-12 2024-05-28 杭州一隅千象科技有限公司 多方向环幕全覆盖的投影方法、投影仪及投影系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6707444B1 (en) * 2000-08-18 2004-03-16 International Business Machines Corporation Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems
JP2004252118A (ja) * 2003-02-20 2004-09-09 Hitachi Ltd カメラ機能内蔵液晶プロジェクタにより投写映像と手書き画像を合成してパソコンに取り込む方法、及び装置
CN1687869A (zh) * 2005-05-17 2005-10-26 殷绪成 激光笔的数字墨水生成方法与生成系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6707444B1 (en) * 2000-08-18 2004-03-16 International Business Machines Corporation Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems
JP2004252118A (ja) * 2003-02-20 2004-09-09 Hitachi Ltd カメラ機能内蔵液晶プロジェクタにより投写映像と手書き画像を合成してパソコンに取り込む方法、及び装置
CN1687869A (zh) * 2005-05-17 2005-10-26 殷绪成 激光笔的数字墨水生成方法与生成系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102636940A (zh) * 2011-02-15 2012-08-15 亚洲光学股份有限公司 光学系统及具有该光学系统的电子装置

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