WO2014117557A1 - Procédé et appareil de transmission d'un signal synchrone 3d et téléviseur 3d - Google Patents

Procédé et appareil de transmission d'un signal synchrone 3d et téléviseur 3d Download PDF

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Publication number
WO2014117557A1
WO2014117557A1 PCT/CN2013/086873 CN2013086873W WO2014117557A1 WO 2014117557 A1 WO2014117557 A1 WO 2014117557A1 CN 2013086873 W CN2013086873 W CN 2013086873W WO 2014117557 A1 WO2014117557 A1 WO 2014117557A1
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WO
WIPO (PCT)
Prior art keywords
signal
synchronization signal
backlight
control signal
video
Prior art date
Application number
PCT/CN2013/086873
Other languages
English (en)
Chinese (zh)
Inventor
杨杰
徐爱臣
Original Assignee
青岛海信信芯科技有限公司
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Publication of WO2014117557A1 publication Critical patent/WO2014117557A1/fr

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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
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/008—Aspects relating to glasses for viewing stereoscopic images

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a 3D synchronization signal transmission method, apparatus, and 3D television. Background technique
  • FIG. 1 is a schematic diagram of the implementation of the shutter type 3D display technology.
  • the left and right eye images are alternately displayed, that is: when the right eye image needs to be displayed, the right lens is opened and the left lens is closed.
  • the left lens is turned on and the right lens is closed, and during the whole process, the refresh timing of the left and right eye images is kept synchronized with the switching timing of the left and right lenses of the glasses, so that the left eye of the person can pass the left of the 3D glasses.
  • the lens sees the left eye image of each frame of image, ensuring that the right eye of the person can see the right eye image of each frame image through the right lens of the 3D glasses, and alternately display the left and right eye images to finally synthesize the 3D image in the human brain.
  • the prior art shutter type 3D glasses include an infrared signal or a radio frequency signal transmission mode, and the configuration includes a transmitting unit and a receiving unit, wherein the transmitting unit is disposed in a display terminal (eg, a 3D television), which extracts synchronization from the displayed image signal.
  • the signal is modulated into a modulation signal that is convenient for transmission, and then output to a transmitting board disposed in the display terminal.
  • the transmitting board converts the modulated signal into an infrared or radio frequency signal, and outputs the infrared or radio frequency signal into the space.
  • the receiving unit is disposed in the shutter 3D glasses, and the receiver of the 3D glasses will receive the infrared or radio frequency signal in the space, and demodulate and restore the synchronization signal, convert the synchronization signal into a control signal, and control the left and right lenses of the glasses according to the control signal.
  • the switch in this way, controls the left and right lens switches by time sharing, and ensures synchronization with the display timing of the left and right eye images.
  • FIG. 2 is a schematic diagram of a prior art modulation 3D synchronization signal processing.
  • a 38 k carrier signal is modulated with a 60 Hz image synchronization signal to generate a 38 k carrier signal having a frequency of 60 Hz
  • the transmitting module passes an infrared or radio frequency method.
  • the receiving module receives the radio frequency or infrared signal, and then demodulates and restores the synchronization signal through the 3D glasses, and the synchronization signal is used to control the switch of the left and right lenses of the 3D glasses, so that the 3D glasses lens switch and the video image display are kept in synchronization.
  • the transmitting unit needs to be equipped with a transmitting module and a transmitting module in the display terminal. It is composed of a circuit board provided with a signal transmitting head and is connected with a central processing unit of the signal processing circuit. To ensure convenient reception of the transmitting signal, the transmitting module needs to be disposed in the front housing at the front end of the display terminal, in order to cooperate with the transmitting head. An emission hole is opened in the casing, so that a space needs to be reserved inside the front casing for setting the transmitting module.
  • the present application provides a 3D synchronous signal transmitting method, apparatus and 3D television set.
  • an embodiment of the present application provides a 3D synchronization signal transmission apparatus, including a transmitting unit and a receiving unit, where the transmitting unit is disposed in a display device, and includes: a synchronization signal generating unit, based on The 3D video signal generates a first synchronization signal; the backlight signal modulating unit is connected to the synchronization signal generating unit, and configured to modulate the first synchronization signal and the backlight control signal to generate a first control signal; the backlight driving unit, and The backlight control signal modulating unit is connected to receive the first control signal for driving the display device backlight module to emit light; the receiving unit is disposed in the 3D glasses, and includes: a photoreceptor for illuminating the light including the backlight Converting a signal into a second control signal; a synchronization signal identifying unit, coupled to the photoreceptor, for identifying the first synchronization signal from the second control signal; a glasses timing control unit, and the synchronization signal identification unit
  • Another aspect provides a 3D synchronization signal transmission method for use in a display screen
  • generating a first synchronization signal based on the 3D video signal modulating the first synchronization signal and the backlight control signal to generate a first control signal; the first control signal driving the display backlight; Converting an optical signal including a backlight change into a second control signal; identifying the first synchronization signal from the second control signal; generating a third control signal according to the identification first synchronization signal, the third control signal being used Control the switching timing of the left and right eyeglasses of the 3D glasses.
  • a 3D television set is provided in the embodiment, the 3D television comprising the display device in the 3D synchronization signal transmission device, and the 3D glasses in the 3D synchronization signal transmission device.
  • the present invention adopts a technical solution of: generating a first synchronization signal based on a 3D video signal, and modulating the first synchronization signal by a carrier signal and a backlight control signal for driving the backlight to generate a first control signal, SP: a new backlight
  • the control signal is used to drive the illumination of the backlight, and then the photosensor including the backlight change is converted into an electrical signal by the photoreceptor of the 3D glasses, and the electrical signal is: the second control signal, the synchronous recognition unit of the 3D glasses is further from the second
  • the first synchronization signal is recognized in the control signal, and the third control signal for controlling the eyeglass lens switch is generated according to the first synchronization signal, and the left and right eye lens switching timings of the 3D glasses are controlled, and the left and right eye image display and the left and right eyeglass lens switches and the 3D glasses can be maintained.
  • the display of the video signal remains synchronized.
  • the present invention transmits the synchronization signal through the visible light communication mode, and the backlight module in the terminal of the display device can generate visible light, and the synchronization signal is modulated together with the backlight control signal to drive the backlight to emit light, wherein, the synchronization The signal will affect the backlight change, distinguish the synchronization signal from the backlight change, and realize the transmission and reception of the synchronization signal of the display device.
  • the present invention adopts the above technical solution, since the functional module of the transmitting module is not further disposed in the transmitting unit, in terms of structural design, the front housing does not need to reserve the transmitting module.
  • the space is set, so that the thickness of the whole machine and the width of the frame are no longer limited by the space of the transmitting module, which is beneficial to the ultra-thinness of the whole machine or the narrower edge of the front shell frame.
  • FIG. 1 is a schematic diagram of the implementation of a prior art shutter-type 3D display technology
  • FIG. 2 is a schematic diagram of a prior art modulation 3D synchronization signal processing
  • FIG. 3 is a frame diagram of a 3D synchronous signal transmission system according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a 3D synchronization signal transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a modulated carrier signal of Embodiment 1;
  • FIG. 6 is a schematic diagram of a modulated carrier signal of left and right eye sync signals
  • Figure 7 is a schematic diagram of a Blinking (blinking) LCD backlight modulation signal
  • Figure 8 is a schematic diagram of a Scanning (scanning) LCD backlight modulation signal
  • FIG. 9 is a block diagram of a 3D synchronization signal transmission device of Embodiment 2.
  • FIG. 10 is a circuit diagram of a receiving unit of Embodiment 2;
  • FIG. 11 is a schematic diagram of a 3D television set of Embodiment 3. detailed description
  • the technical solution in the embodiment of the present application is to solve the above technical problem, and the general idea is as follows:
  • the technical solution of the present invention is that the 3D synchronization signal transmission device mainly comprises a transmitting unit and a receiving unit, wherein the transmitting unit modulates the synchronization signal of the 3D glasses together with the backlight signal to generate a modulated backlight control signal, that is, the first control signal.
  • the first control signal drives the backlight;
  • the receiving unit sets the photoreceptor on the 3D glasses, and the ambient light changes through the photoreceptor, and the photoreceptor converts the optical signal into an electrical signal, and the ambient light change is mainly driven by the first control signal.
  • the backlight change causes the electrical signal, that is, the second control signal, to include the information of the first control signal, and the information of the first control signal also includes the synchronization signal and the backlight control signal modulated, wherein the synchronization signal also affects the backlight.
  • the 3D glasses can recognize the synchronization signal carried in the second control signal, and then generate and control the 3D glasses lens control signal by the synchronization signal. Therefore, the left and right eye images of the 3D display are synchronized with the 3D glasses lens switch.
  • the transmission system mainly includes a display device 1 and 3D glasses 2.
  • the display device 1 includes a display screen (not shown) and a transmitting unit 13 .
  • the display screen includes a display backlight 11 and a backlight control signal output unit 12 in the display driving unit.
  • the transmitting unit 13 includes a synchronization signal generating unit 1301.
  • the backlight signal modulating unit 1302 and the backlight driving unit 1302 receive the backlight control signal output by the backlight control signal output unit 12 and the synchronization signal output by the synchronization signal generating unit 1301 for generating a backlight modulation signal, that is, the first control The signal, the first control signal is output to the backlight driving unit 1303, and the backlight driving unit 1303 drives the display backlight 11 to emit light according to the first control signal.
  • the 3D glasses 2 include a receiving unit 22 and a pair of glasses left and right eyeglasses 21, wherein the receiving unit 22 includes a photoreceptor 2201, a synchronization signal identifying unit 2202, and a glasses timing control unit 2203 for receiving ambient light, and will include Backlight 11 illumination change ring
  • the optical signal of the ambient light is converted into an electrical signal and output to the synchronization signal identification unit 2202.
  • the optical signal includes an optical signal with a backlight change
  • the electrical signal includes a first control signal for controlling the backlight
  • the synchronization signal recognition unit 2202 receives the electrical signal.
  • a control signal includes a synchronization signal
  • the glasses timing control unit 2203 connected to the synchronization signal recognition unit 2202 generates a control signal to control the switching of the left and right eyeglasses of the 3D glasses according to the synchronization signal.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a 3D synchronization signal transmission method is provided, where the method is applied to a 3D display device of a display screen, wherein the 3D display device includes a 3D LCD TV, a tablet device, a mobile phone, etc., and the 3D display device type does not constitute here.
  • the 3D LCD TV is taken as an example for specific description, and the 120Hz 3D liquid crystal screen is used as the display screen of the 3D LCD TV.
  • FIG. 4 is a flowchart of a method for transmitting a 3D synchronization signal according to the embodiment of the present invention. Specifically, the specific implementation process of the first embodiment of the present application is described in detail with reference to FIG. 4, which includes the following steps:
  • Step S11 Generate a first synchronization signal based on the 3D video signal.
  • the step specifically includes:
  • the 3D LCD TV receives the external 3D video signal through the peripheral signal interface, performs 3D signal analysis on the 3D video signal, separates the left and right eye image signals, and processes the image data into 120 Hz, including the left eye image data and the right eye image data.
  • the 3D images are realized by alternately displaying the left and right eye images on the display screen.
  • a video sync signal is obtained from parsing the 3D video signal, wherein the video sync signal includes a left eye image video sync signal and a right eye image video sync signal.
  • the video synchronizing signal is modulated by a 38 kHz carrier square wave signal to obtain a first synchronizing signal, which is a digital pulse signal.
  • the carrier signal may also adopt other frequencies, such as 20 kHz, etc., which does not constitute a limitation of the embodiment.
  • the modulation mode may be digital pulse modulation for modulating into a digital pulse signal including a pulse number and a pulse width.
  • FIG. 5 is a schematic diagram of a modulated carrier signal according to Embodiment 1, and FIG. 5 shows a 60 Hz 38 kHz carrier signal generated by a pulse modulation of a video synchronization signal via a 38 kHz carrier.
  • FIG. 6 is a schematic diagram of the left-right eye synchronization signal modulation carrier signal.
  • the encoding of the left and right eye synchronization signals is Different, it is easy to identify the left and right eye synchronization signals, such as: the left eye synchronization signal is encoded as 101010, and the right eye synchronization signal is encoded as 100010.
  • the glasses switch timing can be controlled according to the left-eye image synchronization signal, and the glasses switch timing can be controlled according to the right-eye synchronization signal, and the left-eye lens can be controlled according to the left-eye synchronization signal, the right eye, respectively.
  • the sync signal controls the right eyepiece switch.
  • a first synchronization signal is generated every time a frame of 3D video is received, and a first synchronization signal can also be generated by receiving a multi-frame 3D video, such as: one is generated every time 2 frames of 3D video are received.
  • First sync signal is generated every time a frame of 3D video is received.
  • Step S12 Modulating the first synchronization signal and the backlight control signal to generate a first control signal.
  • the backlight control signal can be outputted by the timing controller of the display screen, and the PWM dimming signal is not described herein.
  • FIG. 7 is a schematic diagram of a Blinking (blinking) LCD backlight modulation signal.
  • a 60 Hz 38 kHz carrier signal is modulated with a PWM backlight control signal to generate a new backlight control signal, the first control signal, for The drive controls the backlight of the display.
  • the gray field or the black field is inserted between the left and right images, and the image may not be inserted, and only the left eye image and the right eye image are alternately displayed.
  • Blinking (flashing) LCD backlight adopts full-on or full-off mode.
  • the backlight switching time is determined according to the duty cycle control PWM signal.
  • the backlight switch position is determined according to the 3D image refresh steady-state time.
  • the top starts to refresh the image, and the image steady state arrives from the top to the bottom.
  • the backlight is turned on.
  • the liquid crystal line at the bottom of the liquid crystal screen reaches the steady state, the backlight is turned off until the right eye is refreshed.
  • Image, refresh right eye image backlight on timing is the same as left eye image refresh timing.
  • the PWM backlight control pulse signal is placed during the high level period, The backlight is lit.
  • the low level is set, the backlight is turned off, and the first sync signal continuously changes 3 times in the modulated backlight control signal.
  • Figure 8 is a schematic diagram of the scanning signal of the Scanning LCD screen. Combined with Figure 5 and Figure 8, the 60 Hz 38 kHz carrier signal is modulated with the PWM backlight control signal to generate a new backlight control signal, the first control signal, for The drive controls the backlight of the display.
  • a six-segment backlight scanning mode is shown in FIG. 8. The backlight scanning mode does not limit the technical solution of the embodiment, and may be other scanning modes.
  • the backlight control period is sequentially delayed by the backlight control signal of the first region to the sixth region backlight control signal, and each backlight control signal and the first synchronization signal are respectively respectively Modulation is performed, and the pulse position and pulse width of the first synchronization signal are the same in each of the modulated backlight control signals, such that the backlight change timing and duration generated by the first synchronization signal of the backlight of each region are kept synchronized.
  • Step S13 The first control signal drives the display screen backlight to emit light.
  • the first control signal is used to drive the display backlight.
  • the backlight changes according to the number of pulses and the width of the pulse modulated by the PWM into a digital pulse signal. For example, in Figure 7, six bright and dark changes occur in response to the sync signal pulse being the backlight. Changes in backlights can affect changes in ambient light, so controlling the backlight changes converts the sync signal into a light signal through the backlight.
  • Step S14 The photoreceptor of the 3D glasses converts the optical signal including the backlight change into the second control signal.
  • the photoreceptor 2201 is disposed in the 3D glasses 2, wherein the photoreceptor 2201 is a high-sensitivity photosensitive device, which converts the high-frequency visible light-changing optical signal into an electric signal.
  • the photoreceptor 2201 can convert the optical signal of the ambient light affected by the backlight change into an electrical signal, SP: the second control signal, because the backlight change affects the change of the ambient light,
  • the second control signal includes a first control signal for backlight control. Further, the first control signal is modulated by the first synchronization signal and the backlight PWM dimming signal, and the second control signal also includes the first synchronization signal.
  • Step S15 identifying the first synchronization signal from the second control signal.
  • the first synchronization signal is a digital pulse signal generated by modulating a video synchronization signal by using a 38 kHz carrier square wave signal, and extracting a pulse width and a pulse number corresponding to the backlight change from the second control signal, according to the The pulse width and the number of pulses identify the first synchronization signal.
  • the processor can identify the first synchronization signal by comparison, and identify whether it is the first synchronization signal according to the number of pulses and the pulse width, as shown in FIG. 7 and FIG. When three consecutive pulse times and widths in Figs. 7 and 8 are recognized in the signal, it is determined that three consecutive pulses are the first synchronization signals.
  • Step S16 A third control signal is generated according to the identification of the first synchronization signal, and the third control signal is used to control the switching timing of the left and right eyeglass lenses of the 3D glasses.
  • a control signal is further generated by the processor of the 3D glasses, SP: a third control signal, and the switching timing of the 3D glasses is controlled by the third control signal.
  • a 3D synchronization signal transmission method is provided.
  • the first synchronization signal is generated based on the 3D video signal, and then the first synchronization signal is modulated by the carrier signal and the backlight control signal for driving the backlight to generate a first control signal, SP: A new backlight control signal for driving the backlight, and then sensing the backlight change in the ambient light through the photoreceptor of the 3D glasses, converting the optical signal into an electrical signal, and the electrical signal being the second control signal, identifying the second control signal
  • the first synchronization signal generates a third control signal for controlling the eyeglass lens switch according to the first synchronization signal, and controls the left and right eyeglass lens switching timings of the 3D glasses, so that the left and right eye image display can be kept synchronized with the left and right eyeglass lens switches of the 3D glasses.
  • the present invention transmits the synchronization signal through the visible light communication mode, and utilizes the backlight change of the display device terminal to realize synchronization. Signal transmission and reception, so that the transmitter module is simplified without the need to set up the transmitter module.
  • the function module of the transmitting module is not further disposed in the transmitting unit, and the front shell does not need to reserve the setting space of the transmitting module in the structural design, so that the thickness and the border of the whole machine are The width is no longer limited by the space of the transmitting module, which is beneficial to the ultra-thinness of the whole machine or the narrower edge of the front shell frame.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a 3D synchronous signal transmission device is provided.
  • a 3D liquid crystal display is used as a display device, and the display device can be implemented by a 3D LCD TV, a tablet computer, or a mobile phone display terminal. .
  • FIG. 9 is a block diagram of a 3D synchronous signal transmission apparatus of the present invention. As shown in Figure 9, the apparatus includes a transmitting unit 13 and a receiving unit 22:
  • the transmitting unit 13 is disposed in the display device 1, and the transmitting module 13 may be integrated with a signal processing circuit disposed in the 3D liquid crystal television, or may be separately configured to be separated from the signal processing circuit of the television, and includes:
  • the sync signal generating unit 1301 generates a first sync signal based on the 3D video signal. Further, the synchronization signal generating unit 1301 is specifically configured to receive a 3D video signal, obtain a video synchronization signal from the 3D video signal, and modulate the video synchronization signal by using a 38 kHz carrier signal to obtain a first synchronization signal. A digital pulse signal that includes the number of pulses and the pulse width.
  • the video synchronization signal acquired in the synchronization signal generating unit 1301 includes a left eye image video synchronization signal and a right eye image video synchronization signal.
  • the modulation method is digital pulse modulation, which is used to modulate the pulse number and pulse width.
  • the sync signal generating unit 1301 function may also be integrated in the timing control circuit, or may be a circuit in the timing control circuit, or may be separately and independently set from the timing control circuit.
  • the backlight signal modulating unit 1302 is connected to the synchronization signal generating unit 1301 for modulating the first synchronization signal and the backlight control signal to generate a first control signal.
  • the backlight control signal is a PWM signal, and the modulation can be performed by using a digital pulse modulation method. Style.
  • the backlight signal modulating unit 1302 receives the backlight control signal outputted by the timing control circuit for modulation, wherein the backlight signal modulating unit may be disposed in the timing control circuit or may be arranged in parallel with the timing control circuit.
  • the backlight driving unit 1303 is connected to the backlight control signal modulating unit 1302, and receives the first control signal for driving the display backlight 11 to emit light.
  • the backlight driving unit 1303 functions to drive the backlight to illuminate, wherein the brightness of the backlight depends on the amplitude of the first control signal, and the amplitude change of the first control signal causes a change in the brightness of the backlight, such that the first A change in the amplitude of the control signal causes a change in ambient light.
  • the transmitting unit 13 includes a synchronization signal generating unit 1301, a backlight signal modulating unit 1302, and a backlight driving unit 1303 disposed in the display device, and can be integrated into an integrated circuit, and the integrated circuit completes the synchronization signal generating unit 1301 and the backlight signal modulating unit.
  • the module function of 1302 and backlight driving unit 1303 can also integrate some functions in the integrated circuit.
  • the receiving unit 22 is disposed in the 3D glasses 2 and includes:
  • the photoreceptor 2201 is connected to the display device 1 by an optical signal generated by a backlight for converting the backlight-converted ambient light signal into a second control signal.
  • the photoreceptor 2201 uses a high-sensitivity optical sensor to convert an ambient light optical signal into an electrical signal, and the electrical signal is a second control signal. Since the ambient light includes a first control signal to control the backlight signal, the converted electrical signal also includes The first control signal, the first control signal includes a first synchronization signal.
  • a synchronization signal identifying unit 2202 coupled to the photoreceptor 2201, for identifying the first synchronization signal from the second control signal, wherein the first synchronization signal is a digital pulse signal, from the second A pulse width and a pulse number corresponding to the backlight change are extracted from the control signal, and the first synchronization signal is identified according to the pulse width and the number of pulses.
  • the glasses timing control unit 2203 is connected to the synchronization signal identification unit 2202, and used
  • the third control signal is generated according to the first synchronization signal, and the third control signal is used to control the switching timing of the left and right eyeglass lenses 21 of the 3D glasses 2 .
  • FIG. 10 is a circuit diagram of a receiving unit of the second embodiment. As shown in FIG. 10, the optical signal generated by the photoreceptor VD1 is input to the processor MCU (N3 in the figure) through the amplified processing signal Vin.
  • the specific MCU judgment mode is that when the ambient light is bright or dark, the level of Vin changes accordingly.
  • the AO pin of the MCU determines that the level of Vin has changed six times in succession, it is considered that there is a glasses synchronization signal output.
  • the control signals Glasssl and Glass2 outputting the left and right lenses control the opening and closing of the left and right lenses.
  • FIG. 11 is a schematic diagram of a 3D television set according to the third embodiment.
  • the 3D television includes the display device 1 in the second embodiment and the display device 1 in the second embodiment. 3D glasses 2.
  • the display device 1 includes a signal processing circuit SOC, a timing control circuit TCON, a liquid crystal display LCD, and a transmitting unit.
  • the signal processing circuit SOC receives the external 3D video signal through the peripheral interface circuit, performs signal processing, and then outputs the LVDS signal to the timing control circuit TCON, and the data signal and the synchronization signal are separated by the timing control circuit TCON, and the separated data signal is output to the LVDS signal.
  • the LCD screen LCD, the data signal is used for image display on the LCD screen LCD.
  • the synchronization signal is further processed by the transmitting unit, and the processing method is the same as that of the first embodiment.
  • the description of the first control signal processed by the transmitting unit is used to drive the LCD image refresh of the liquid crystal display screen.
  • the 3D glasses 2 include a receiving unit and left and right eyeglasses for the 3D glasses.
  • the receiving unit is the same as the receiving unit in the second embodiment, and the details are not repeated here.

Abstract

La présente invention concerne un procédé et un appareil de transmission d'un signal synchrone 3D et un téléviseur 3D. Le procédé consiste à générer un premier signal synchrone sur la base d'un signal vidéo 3D, à moduler ensuite le premier signal synchrone au moyen d'un signal de porteuse et d'un signal de commande de rétroéclairage pilotant le rétroéclairage, et à générer un premier signal de commande, c'est-à-dire un nouveau signal de commande de rétroéclairage utilisé pour piloter le rétroéclairage ; à détecter ensuite une variation du rétroéclairage dans la lumière environnante au moyen d'un photodétecteur des lunettes 3D ; à convertir un signal optique en un signal électrique, le signal électronique étant un deuxième signal de commande, et à identifier le premier signal synchrone dans le deuxième signal de commande : à générer en fonction du premier signal synchrone un troisième signal de commande commandant l'ouverture et la fermeture des lentilles des lunettes, de manière à commander la séquence temporelle des lentilles droite et gauche des lunettes 3D de telle manière que l'affichage de l'image pour l'œil gauche et pour l'œil droit puisse rester synchronisé avec l'ouverture et la fermeture des lentilles droite et gauche des lunettes 3D. Il n'est pas nécessaire comme dans l'art antérieur de paramétrer un module de transmission, ce qui simplifie le module de transmission.
PCT/CN2013/086873 2013-01-31 2013-11-11 Procédé et appareil de transmission d'un signal synchrone 3d et téléviseur 3d WO2014117557A1 (fr)

Applications Claiming Priority (2)

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CN201310036823.5 2013-01-31
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CN105306990B (zh) * 2014-06-30 2018-07-31 深圳市同方多媒体科技有限公司 一种多功能通讯接口及实现接口的多功能通讯的方法
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CN107632394A (zh) * 2017-09-21 2018-01-26 上海闻泰电子科技有限公司 去除vr中lcd显示余辉的方法及装置
CN115250347A (zh) * 2021-04-26 2022-10-28 北京汉美奥科节能设备有限公司 一种用光敏设备直接同步显示设备与3d眼镜的方法
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