WO2014117557A1 - Method and apparatus for transmitting 3d synchronous signal, and 3d television - Google Patents

Method and apparatus for transmitting 3d synchronous signal, and 3d television 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
French (fr)
Chinese (zh)
Inventor
杨杰
徐爱臣
Original Assignee
青岛海信信芯科技有限公司
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
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Application filed by 青岛海信信芯科技有限公司 filed Critical 青岛海信信芯科技有限公司
Publication of WO2014117557A1 publication Critical patent/WO2014117557A1/en

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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

The present invention provides a method and an apparatus for transmitting a 3D synchronous signal, and a 3D television. A first synchronous signal is generated based on a 3D video signal, the first synchronous signal is then modulated by using a carrier signal and a backlight control signal driving backlight, and a first control signal is generated, that is, a new backlight control signal used for driving the backlight; then, a backlight change in environment light is sensed by using a photoreceptor of the 3D glasses; an optical signal is converted into an electric signal, and the electronic signal is a second control signal, and the first synchronous signal in the second control signal is identified; a third control signal for controlling opening and closing of lenses of the glasses is generated according to the first synchronous signal, so as to control the time sequence of the left and right lenses of the 3D glasses, so that the image display to left and right eyes can be kept synchronous with the opening and closing of the left and right lenses of the 3D glasses. Compared with the prior art, a transmitting module does not need to be set, thereby simplifying a transmitting module.

Description

3D同步信号传输方法、 装置和 3D电视机  3D synchronous signal transmission method, device and 3D television
技术领域 Technical field
本发明涉及显示技术领域， 特别涉及一种 3D 同步信号传输方法、 装置和 3D电视机。 背景技术  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
图 1为快门式 3D显示技术的实现原理图， 参照图 1， 在快门式 3D 显示技术中， 左右眼图像交替显示， 即为： 在需要显示右眼图像时， 右 镜片开启左镜片关闭，在需要显示左眼图像时，左镜片开启右镜片关闭， 且在整个过程中， 左右眼图像的刷新时序与眼镜左右镜片的开关时序是 保持同步的， 这样就保证人的左眼能够通过 3D眼镜的左镜片看到每一 帧图像的左眼图像， 保证人的右眼能够通过 3D眼镜的右镜片看到每一 帧图像的右眼图像， 交替显示左右眼图像最终在人的大脑合成 3D影像。  FIG. 1 is a schematic diagram of the implementation of the shutter type 3D display technology. Referring to FIG. 1, in 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. When the left eye image needs to be displayed, 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.
现有技术中快门式 3D眼镜包括红外信号或射频信号发送方式， 其 构成包括发射单元和接收单元， 其中， 发射单元置于显示终端 （如： 3D 电视） 中， 其从显示图像信号中提取同步信号， 将同步信号进行调制成便 于发射的调制信号， 再输出给设置于显示终端内的发射板， 发射板将调制 信号转化为红外或者射频信号， 并将红外或射频信号输出到空间中。 接收 单元设置于快门 3D眼镜中， 3D眼镜的接收器将接收该空间中红外或射频 信号， 并进行解调还原同步信号， 将同步信号再转化为控制信号， 根据控 制信号来控制眼镜的左右镜片开关， 这样， 通过分时控制左右镜片开关， 并保证与左右眼图像显示时序保持同步。  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.
图 2为现有技术调制 3D同步信号处理的示意图，如图 2示，通过 38k 的载波信号与 60Hz图像同步信号进行调制， 调制生成频率为 60Hz的 38k 载波信号， 由发射模块通过红外或射频方式进行发射传播， 然后 3D眼镜 接收模块接收射频或红外信号， 再经 3D眼镜进行解调还原同步信号， 同 步信号用于控制 3D眼镜的左右镜片的开关， 实现 3D眼镜镜片开关与视 频图像显示保持同步。 2 is a schematic diagram of a prior art modulation 3D synchronization signal processing. As shown in FIG. 2, 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, and the transmitting module passes an infrared or radio frequency method. Carry out the launch, then 3D glasses 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.
但是， 发明人在实现本申请实施例中技术方案的过程中， 发现上述 快门式 3D显示技术至少存在缺点如下： 上述红外信号或射频信号方式，发射单元均需要在显示终端装配发射 模块， 发射模块由设置有信号发射头的电路板构成， 并与信号处理电路 的中央处理器连接， 为保证发射信号方便接收， 发射模块需设置在显示 终端正前端的前壳内， 为配合发射头需在前壳上开设发射孔， 这样， 前 壳内部需要预留空间用于设置发射模块。 发明内容  However, in the process of implementing the technical solution in the embodiment of the present application, the inventor finds that the above-mentioned shutter type 3D display technology has at least the following disadvantages: The above-mentioned infrared signal or radio frequency signal mode, 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. Summary of the invention
为了简化现有技术 3D同步信号传输方法中发射单元， 本申请提供 一种 3D同步信号传输方法、 装置和 3D电视机。  In order to simplify the transmitting unit in the prior art 3D synchronous signal transmitting method, the present application provides a 3D synchronous signal transmitting method, apparatus and 3D television set.
为实现上所述发明目的， 本申请实施例一方面提供了一种 3D同步 信号传输装置， 包括发射单元和接收单元， 所述发射单元设置于显示设 备中， 其包括： 同步信号生成单元， 基于 3D视频信号生成第一同步信 号； 背光信号调制单元， 与所述同步信号生成单元连接， 用于将所述第 一同步信号与背光控制信号进行调制， 生成第一控制信号； 背光驱动单 元， 与背光控制信号调制单元连接， 接收所述第一控制信号， 用于驱动 所述显示设备背光模块发光； 所述接收单元设置于 3D眼镜中， 其包括: 感光器， 用于将包括背光变化的光信号转化为第二控制信号； 同步信号 识别单元， 与所述感光器连接， 用于从所述第二控制信号中识别所述第 一同步信号； 眼镜时序控制单元， 与所述同步信号识别单元连接， 用于 根据识别所述第一同步信号生成第三控制信号， 所述第三控制信号用于 控制 3D眼镜的左右眼镜片的开关时序。。  In order to achieve the above object, 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 a connection, configured to generate a third control according to identifying the first synchronization signal The signal is controlled, and the third control signal is used to control the switching timing of the left and right eyeglasses of the 3D glasses. .
另一方面提供了一种 3D同步信号传输方法， 应用于包括显示屏的 3D显示设备中， 基于 3D视频信号生成第一同步信号； 将所述第一同步 信号与背光控制信号进行调制， 生成第一控制信号； 所述第一控制信号 驱动所述显示屏背光； 用于将包括背光变化的光信号转化为第二控制信 号； 从所述第二控制信号中识别所述第一同步信号； 根据识别第一同步 信号生成第三控制信号， 所述第三控制信号用于控制 3D眼镜的左右眼 镜片的开关时序。 Another aspect provides a 3D synchronization signal transmission method for use in a display screen In the 3D display device, 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.
再一方面， 本实施例中还提供一种 3D电视机， 所述 3D电视包括 上述 3D同步信号传输装置中所述显示设备，及配备上述 3D同步信号传 输装置中所述 3D眼镜。  In another aspect, 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.
通过本申请实施例中的一个或多个实施例中的技术方案， 至少可以 获得如下技术效果：  With the technical solutions in one or more embodiments in the embodiments of the present application, at least the following technical effects can be obtained:
一方面， 本发明采用技术方案为， 基于 3D视频信号生成第一同步 信号， 再将第一同步信号通过载波信号与驱动背光的背光控制信号进行 调制， 生成第一控制信号， SP : 新的背光控制信号， 用于驱动背光的发 光， 再通过 3D眼镜的感光器来感应包括有背光变化的光信号转化为电 信号， 电信号即： 第二控制信号， 3D眼镜的同步识别单元再从第二控制 信号中识别出第一同步信号， 根据第一同步信号生成控制眼镜镜片开关 的第三控制信号， 控制 3D眼镜左右眼镜片开关时序， 可以保持左右眼 图像显示与 3D眼镜左右眼镜片开关与 3D视频信号的显示保持同步。与 现有技术相比， 本发明将同步信号通过可见光通信方式进行传输， 利用 了显示设备终端中背光模块发光可产生可见光线， 将同步信号与背光控 制信号一起调制来驱动背光发光， 其中， 同步信号会影响背光变化， 从 背光变化中辨别出同步信号， 实现了显示设备端同步信号的发射和接 收， 这样， 无需在显示设备端设置同步信号发射模块， 简化发射单元。 另一方面， 本发明采用上述的技术方案中， 由于未在发射单元中再 设置发射模块的功能模块， 在结构设计方面， 前壳无需预留发射模块的 设置空间， 这样， 整机的厚度和边框宽度不再受发射模块空间限制， 有 利于整机更加超薄化或前壳边框更加窄边化。 附图说明 In one aspect, 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. Compared with the prior art, 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. Thus, it is not necessary to set the synchronization signal transmission module on the display device side to simplify the transmission unit. On the other hand, 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. DRAWINGS
图 1为现有技术快门式 3D显示技术的实现原理图；  1 is a schematic diagram of the implementation of a prior art shutter-type 3D display technology;
图 2为现有技术调制 3D同步信号处理的示意图；  2 is a schematic diagram of a prior art modulation 3D synchronization signal processing;
图 3为本发明实施例 3D同步信号传输系统框架图；  3 is a frame diagram of a 3D synchronous signal transmission system according to an embodiment of the present invention;
图 4为本发明实施例一 3D同步信号传输方法流程图；  4 is a flowchart of a 3D synchronization signal transmission method according to an embodiment of the present invention;
图 5为实施例一的调制载波信号示意图；  5 is a schematic diagram of a modulated carrier signal of Embodiment 1;
图 6为左右眼同步信号调制载波信号示意图；  6 is a schematic diagram of a modulated carrier signal of left and right eye sync signals;
图 7为 Blinking (闪烁式） 液晶屏背光调制信号示意图；  Figure 7 is a schematic diagram of a Blinking (blinking) LCD backlight modulation signal;
图 8为 Scanning (扫描式） 液晶屏背光调制信号示意图；  Figure 8 is a schematic diagram of a Scanning (scanning) LCD backlight modulation signal;
图 9为实施例二的 3D同步信号传输装置框架图；  9 is a block diagram of a 3D synchronization signal transmission device of Embodiment 2;
图 10为实施例二的一种接收单元电路图； 图 11为实施例三的一种 3D电视机示意图。 具体实施方式  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
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及 功效， 以下结合附图及较佳实施例， 对依据本申请提出的 3D同步信号 传输方法、 装置和电视机的具体实施方式、 结构、 特征及其功效， 详细 说明如下：  To further explain the technical means and functions of the present invention for achieving the intended purpose of the present invention, the specific embodiments of the 3D synchronous signal transmission method, apparatus and television set according to the present application, with reference to the accompanying drawings and preferred embodiments, The structure, characteristics and efficacy are described in detail as follows:
有关本申请的前述及其它技术内容、 特点及功效， 在以下配合参考 图式的较佳实施例的详细说明中将可清楚呈现。 通过具体实施方式的说 明， 当可对本发明为达成预定目的所采取的技术手段及功效得以更加深 入且具体的了解， 然而所列附图仅是提供参考与说明之用， 并非用来对 本发明加以限制。  The foregoing and other technical aspects, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood by the description of the specific embodiments. However, the drawings are provided for reference and description only, and are not intended to be used for the present invention. limit.
本申请实施例中的技术方案为解决上述技术问题， 总体思路如下： 本发明采用技术方案为， 3D同步信号传输装置主要包括发射单元 和接收单元， 其中， 发射单元是将 3D眼镜的同步信号与背光信号一起 进行调制， 生成调制背光控制信号， 即第一控制信号， 由第一控制信号 去驱动背光； 接收单元则是在 3D眼镜上设置感光器， 通过感光器感应 环境光变化， 感光器将光信号转化为电信号， 由于环境光变化主要由第 一控制信号驱动的背光变化引起， 这样， 电信号即第二控制信号中包括 第一控制信号的信息， 第一控制信号的信息中也包括同步信号与背光控 制信号调制生成的， 其中， 同步信号也影响背光的变化， 3D眼镜可识别 出第二控制信号中携带的同步信号， 再由同步信号生成控制 3D眼镜镜 片控制信号，因此，实现了 3D显示左右眼图像与 3D眼镜镜片开关同步。 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.
为了使本发明所属技术领域中的技术人员更清楚地理解本发明， 下 面结合附图， 通过具体实施例对本申请实施例中的技术方案作详细描 述。  The technical solutions in the embodiments of the present application are described in detail by way of specific embodiments in the accompanying drawings.
图 3为本发明 3D同步信号传输系统框架图， 如图 3示， 传输系统 主要包括显示设备 1和 3D眼镜 2。  3 is a frame diagram of a 3D synchronous signal transmission system of the present invention. As shown in FIG. 3, the transmission system mainly includes a display device 1 and 3D glasses 2.
其中， 显示设备 1包括有显示屏 （图中未示出） 和发射单元 13， 显 示屏包括显示屏背光 11和显示驱动单元中背光控制信号输出单元 12， 发射单元 13包括有同步信号生成单元 1301、背光信号调制单元 1302和 背光驱动单元， 背光信号调制单元 1302接收背光控制信号输出单元 12 输出的背光控制信号和同步信号生成单元 1301输出的同步信号， 用于 生成背光调制信号， 即第一控制信号， 第一控制信号输出给背光驱动单 元 1303， 背光驱动单元 1303根据第一控制信号来驱动显示屏背光 11发 光。  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.
3D眼镜 2包括有接收单元 22和眼镜左右眼镜片 21， 其中， 接收单 元 22包括感光器 2201、 同步信号识别单元 2202和眼镜时序控制单元 2203 , 感光器 2201用于接收环境光， 并将包括有背光 11发光的变化环 境光线的光信号转化成电信号输出给同步信号识别单元 2202，光信号中 包括背光变化的光信号， 电信号则包括有控制背光的第一控制信号， 同 步信号识别单元 2202接收电信号中第一控制信号中包括同步信号， 与 同步信号识别单元 2202连接的眼镜时序控制单元 2203根据同步信号， 生成控制信号来控制 3D眼镜的左右眼镜片的开关。 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, and the electrical signal includes a first control signal for controlling the backlight, and the synchronization signal recognition unit 2202 receives the electrical signal. A control signal includes a synchronization signal, and 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.
实施例一：  Embodiment 1:
本实施例中提供一种 3D同步信号传输方法， 该方法应用在显示屏 的 3D显示设备中， 其中， 3D显示设备包括 3D液晶电视、 平板电脑设 备、 手机等， 3D显示设备类型在此不构成本实施例限制， 在本申请实施 例中， 以 3D液晶电视为一个例子来做具体说明， 以 120Hz3D液晶屏为 3D液晶电视的显示屏。  In this embodiment, 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. In this embodiment, 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.
下面， 图 4为本实施例一 3D同步信号传输方法流程图， 具体结合 图 4， 对本申请实施例一具体实现过程， 进行详细的描述， 包括如下步 骤：  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:
步骤 S11 : 基于 3D视频信号生成第一同步信号。  Step S11: Generate a first synchronization signal based on the 3D video signal.
在本实施中， 该步骤具体还包括：  In this implementation, the step specifically includes:
3D液晶电视通过外围信号接口接收外部 3D视频信号， 对 3D视频 信号进行 3D信号解析， 分离出左右眼图像信号， 并处理成 120Hz的显 示图像数据， 包括左眼图像数据和右眼图像数据， 用于在显示屏上进行 左右眼图像的交替显示， 实现 3D图像。  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.
从解析所述 3D视频信号中获取视频同步信号， 其中， 视频同步信 号包括有左眼图像视频同步信号和右眼图像视频同步信号。  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.
采用 38kHz载波方波信号对视频同步信号进行调制， 获得第一同 步信号， 为一种数字脉冲信号。 其中， 载波信号也可以采用其他频率， 如 20kHz等， 在此不构成本实施例限制， 调制方式可以采用数字脉冲调 制， 用于调制成包括有脉冲次数和脉冲宽度的数字脉冲信号。 图 5为实施例一调制载波信号示意图， 如图 5示， 视频同步信号 经 38kHz载波进行脉冲调制生成的 60Hz的 38kHz载波信号。 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.
同样的， 视频信号中左眼视频同步信号和右眼视频同步信号也可 以进行分别设置于载波信号， 图 6为左右眼同步信号调制载波信号示意 图， 如图 6示， 左右眼同步信号的编码是不同的， 便于识别出左右眼同 步信号，如：左眼同步信号编码为 101010，右眼同步信号编码为 100010。 当识别出同步信号时， 可以依据左眼图像同步信号来控制眼镜开关时 序， 也可以依据右眼同步信号来控制眼镜开关时序， 还可以分别根据左 眼同步信号来控制左眼镜片开光， 右眼同步信号控制右眼镜片开关。  Similarly, the left-eye video synchronization signal and the right-eye video synchronization signal in the video signal can also be respectively set in the carrier signal, and FIG. 6 is a schematic diagram of the left-right eye synchronization signal modulation carrier signal. As shown in FIG. 6, 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. When the synchronization signal is recognized, 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.
另一方面， 本实施例中， 每接收一帧 3D视频时生成一个第一同 步信号， 也可以在接受多帧 3D视频生成一个第一同步信号， 如： 每接 收 2帧 3D视频时才生成一个第一同步信号。  On the other hand, in this embodiment, 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.
步骤 S12: 将所述第一同步信号与背光控制信号进行调制， 生成第 一控制信号。 其中， 在现有技术中背光控制信号可以由显示屏的时序控 制器输出 PWM调光信号， 对现有技术部分在此不再赘述。  Step S12: Modulating the first synchronization signal and the backlight control signal to generate a first control signal. In the prior art, the backlight control signal can be outputted by the timing controller of the display screen, and the PWM dimming signal is not described herein.
图 7为 Blinking (闪烁式） 液晶屏背光调制信号示意图， 结合图 5 和图 7， 60Hz的 38kHz载波信号与 PWM背光控制信号进行调制， 生成 新的背光控制信号， 即第一控制信号， 用于驱动控制显示屏的背光的。 其中图 7中示出，在左右图像之间插入灰场或黑场， 也可以不插入图像， 仅左眼图像和右眼图像进行交替显示。 Blinking (闪烁式） 液晶屏背光 采用全开或全关的方式，背光开关时间根据占空比控制 PWM信号确定， 背光开关位置是依据 3D图像刷新稳态时间确定， 当显示左眼图像时， 从顶端开始刷新图像， 图像稳态从顶端向下依次到达， 当部分液晶行的 液晶分子达到稳态时， 开始开启背光， 至液晶屏底端液晶行也到达稳态 后， 关闭背光直至刷新右眼图像， 刷新右眼图像背光开启时序与左眼图 像刷新时序相同。 其中， PWM背光控制脉冲信号置于高电平期间， 驱 动背光点亮， 当置于低电平时， 驱动背光关闭， 第一同步信号在调制的 背光控制信号中连续发生 3次亮暗变化。 Figure 7 is a schematic diagram of a Blinking (blinking) LCD backlight modulation signal. Combined with Figure 5 and Figure 7, 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. In FIG. 7, 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. When the left-eye image is displayed, The top starts to refresh the image, and the image steady state arrives from the top to the bottom. When the liquid crystal molecules of some liquid crystal lines reach the steady state, the backlight is turned on. When 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. Wherein, the PWM backlight control pulse signal is placed during the high level period, The backlight is lit. When 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.
图 8为 Scanning (扫描式） 液晶屏背光调制信号示意图， 结合图 5 和图 8， 60Hz的 38kHz载波信号与 PWM背光控制信号进行调制， 生成 新的背光控制信号， 即第一控制信号， 用于驱动控制显示屏的背光的。 图 8中示出为六段式背光扫描方式， 此处背光扫描方式不构成本实施例 的技术方案的限制， 也可是其他扫描方式。 对应于液晶屏的 6个区域的 6个背光控制信号， 背光的开启期间由第一区域的背光控制信号至第六 区域背光控制信号依次后延的， 每个背光控制信号分别与第一同步信号 进行调制， 第一同步信号的脉冲位置和脉冲宽度在调制的每个背光控制 信号中相同， 这样， 每个区域的背光的第一同步信号产生的背光变化时 刻和时长保持同步。  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. Corresponding to the six backlight control signals of the six regions of the liquid crystal screen, 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.
步骤 S13 : 所述第一控制信号驱动所述显示屏背光发光。  Step S13: The first control signal drives the display screen backlight to emit light.
结合图 7和图 8示， 依据调制的 PWM调光信号， gp : 第一控制信 号， 用于驱动显示屏背光。 其中如图示， 在调制的 PWM调光信号中， 背光根据 PWM调制成数字脉冲信号的脉冲次数和宽度产生变化的。 例 如图 7中， 对应于同步信号脉冲为背光会发生六次亮暗变化。 背光变化 会影响环境光发生变化， 这样， 控制背光变化就将同步信号通过背光转 化为光信号。  Referring to Figures 7 and 8, according to the modulated PWM dimming signal, gp: the first control signal is used to drive the display backlight. As shown in the figure, in the modulated PWM dimming signal, 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.
步骤 S14: 3D眼镜的感光器将包括背光变化的光信号转化为第二控 制信号。  Step S14: The photoreceptor of the 3D glasses converts the optical signal including the backlight change into the second control signal.
再结合图 3示， 3D眼镜 2中设置感光器 2201， 其中感光器 2201 为高灵敏度光敏器件， 可将高频可见光变化的光信号转化为一种电信 号。  Referring to FIG. 3, 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.
这样， 感光器 2201可以将受背光变化影响的环境光的光信号转化 为电信号， SP : 第二控制信号， 由于背光变化影响到环境光的变化， 第 二控制信号中包含有背光控制的第一控制信号， 进一步的， 第一控制信 号由第一同步信号和背光 PWM调光信号调制而成， 第二控制信号中也 包括有第一同步信号。 In this way, 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.
步骤 S 15 : 从所述第二控制信号中识别所述第一同步信号。  Step S15: identifying the first synchronization signal from the second control signal.
进一步的， 第一同步信号为采用 38kHz载波方波信号对视频同步 信号进行调制生成的一种数字脉冲信号， 从所述第二控制信号中提取对 应背光变化的脉冲宽度和脉冲次数， 根据所述脉冲宽度和脉冲次数识别 所述第一同步信号。  Further, 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.
显然， 通过在 3D眼镜上设置处理器， 处理器可以通过比较方式识 别出第一同步信号， 依据脉冲次数和脉冲宽度识别是否为第一同步信 号， 结合图 7和图 8示， 根据第二控制信号中识别出与图 7和图 8中 3 个连续脉冲次数和宽度时， 判断为 3个连续脉冲为第一同步信号。  Obviously, by setting a processor on the 3D glasses, 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.
步骤 S 16 : 根据识别第一同步信号生成第三控制信号， 所述第三控 制信号用于控制 3D眼镜的左右眼镜片的开关时序。  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.
根据步骤 S 15中识别出的第一同步信号， 进一步由 3D眼镜的处理 器生成控制信号， SP : 第三控制信号， 由第三控制信号来控制 3D眼镜 的开关时序。  According to the first synchronization signal identified in step S15, 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.
本实施例中提供一种 3D同步信号传输方法， 基于 3D视频信号生 成第一同步信号， 再将第一同步信号通过载波信号与驱动背光的背光控 制信号进行调制， 生成第一控制信号， SP : 新的背光控制信号， 用于驱 动背光， 再通过 3D眼镜的感光器来感应环境光中背光变化， 将光信号 转化为电信号， 电信号即第二控制信号， 识别出第二控制信号中的第一 同步信号， 根据第一同步信号生成控制眼镜镜片开关的第三控制信号， 控制 3D眼镜左右眼镜片开关时序，可以保持左右眼图像显示与 3D眼镜 左右眼镜片开关保持同步。 与现有技术相比， 本发明将同步信号通过可 见光通信方式进行传输， 利用了显示设备终端的背光变化， 实现了同步 信号发射和接收， 这样， 无需设置发射模块， 简化发射单元。 在本发明采用上述实施例的技术方案中， 由于未在发射单元中再设 置发射模块的功能模块， 在结构设计上， 前壳无需预留发射模块的设置 空间， 这样， 整机的厚度和边框宽度不再受发射模块空间限制， 有利于 整机更加超薄化或前壳边框更加窄边化。 In this embodiment, 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. Compared with the prior art, 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. In the technical solution of the above embodiment, 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.
实施例二：  Embodiment 2:
本实施例中提供一种 3D同步信号传输装置， 在本申请实施例中， 以 3D液晶屏为显示设备， 配合 3D眼镜实现的， 其中， 显示设备可以 3D液晶电视、 平板电脑、 手机的显示终端。  In this embodiment, a 3D synchronous signal transmission device is provided. In the embodiment of the present application, 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. .
图 9为本发明 3D同步信号传输装置框架图， 如图 9示， 所述装置 包括发射单元 13和接收单元 22 :  Figure 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:
所述发射单元 13设置于显示设备 1中，且所述发射模块 13可以集 成设置在 3D液晶电视中信号处理电路， 也可以独立设置模块， 与电视 的信号处理电路分离， 其包括：  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:
同步信号生成单元 1301， 基于 3D视频信号生成第一同步信号。 进一步的， 所述同步信号生成单元 1301， 具体用于接收 3D视频信 号， 从所述 3D视频信号中获得视频同步信号， 在采用 38kHz载波信号 对视频同步信号进行调制， 获得第一同步信号， 为一种数字脉冲信号， 包括脉冲次数和脉冲宽度。 所述同步信号生成单元 1301中获取的所述 视频同步信号， 包括左眼图像视频同步信号和右眼图像视频同步信号。  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.
其中， 调制方式为数字脉冲调制， 用于调制脉冲次数和脉冲宽度。 同步信号生成单元 1301功能也可集成于时序控制电路中， 也可以 是时序控制电路中一个电路， 还可以与时序控制电路分离独立设置。  Among them, 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.
背光信号调制单元 1302， 与所述同步信号生成单元 1301连接， 用 于将所述第一同步信号与背光控制信号进行调制， 生成第一控制信号。 其中， 所述背光控制信号为 PWM信号， 调制可以采用数字脉冲调制方 式。 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. Wherein, the backlight control signal is a PWM signal, and the modulation can be performed by using a digital pulse modulation method. Style.
进一步的， 背光信号调制单元 1302接收时序控制电路输出的背光 控制信号进行调制， 其中， 背光信号调制单元可以设置在时序控制电路 中， 也可与时序控制电路并列设置。  Further, 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.
背光驱动单元 1303， 与背光控制信号调制单元 1302连接， 接收所 述第一控制信号， 用于所述第一控制信号驱动所述显示屏背光 11发光。  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.
进一步的， 背光驱动单元 1303作用是驱动背光点亮工作， 其中， 背光亮度的强弱取决于第一控制信号的幅度， 第一控制信号的幅度变化 会带来背光亮度的变化， 这样， 第一控制信号的幅度变化引起环境光的 变化。  Further, 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.
所述发射单元 13包括同步信号生成单元 1301、 背光信号调制单元 1302和背光驱动单元 1303设置在显示设备中， 可以集成于一集成电路 中， 该集成电路完成同步信号生成单元 1301、 背光信号调制单元 1302 和背光驱动单元 1303的模块功能， 也可以集成部分功能在集成电路中。  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.
所述接收单元 22设置于 3D眼镜 2中， 其包括：  The receiving unit 22 is disposed in the 3D glasses 2 and includes:
感光器 2201， 通过背光产生的光信号与所述显示设备 1连接， 用 于将所述背光变换的环境光信号转化为第二控制信号。  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.
感光器 2201采用高灵敏度光传感器， 将环境光的光信号转化电信 号， 电信号即为第二控制信号， 由于环境光中包括第一控制信号的控制 背光信号， 转化的电信号也同样包括有第一控制信号， 第一控制信号包 括有第一同步信号。  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.
同步信号识别单元 2202， 与所述感光器 2201连接， 用于从所述第 二控制信号中识别所述第一同步信号， 其中， 第一同步信号为一种数字 脉冲信号， 从所述第二控制信号中提取对应背光变化的脉冲宽度和脉冲 次数， 根据所述脉冲宽度和脉冲次数识别所述第一同步信号。  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.
眼镜时序控制单元 2203， 与所述同步信号识别单元 2202连接， 用 于根据识别所述第一同步信号生成第三控制信号， 所述第三控制信号用 于控制 3D眼镜 2的左右眼镜片 21的开关时序。 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 .
进一步， 图 10为实施例二的一种接收单元电路图， 如图 10示， 感 光器 VD1产生电信号经放大处理信号 Vin输入给处理器 MCU (图中 N3 )。  Further, 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.
具体 MCU判断方式为， 当环境光线突亮或突暗时， Vin的电平随 之发生变化， 在 MCU的 AO管脚判断 Vin的电平有连续六次变化时， 认 为有眼镜同步信号输出， 则输出左右镜片的控制信号 Glassl和 Glass2 控制左右镜片的打开关闭。  The specific MCU judgment mode is that when the ambient light is bright or dark, the level of Vin changes accordingly. When 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. Then, the control signals Glasssl and Glass2 outputting the left and right lenses control the opening and closing of the left and right lenses.
实施三:  Implementation three:
本实施例提供一种 3D电视机， 图 11为实施例三的一种 3D电视机 示意图， 如图 11示， 3D电视包括实施例二中显示设备 1、 实施例二中 与显示设备 1匹配的 3D眼镜 2。  The embodiment provides a 3D television set, and FIG. 11 is a schematic diagram of a 3D television set according to the third embodiment. As shown in FIG. 11 , the 3D television includes the display device 1 in the second embodiment and the display device 1 in the second embodiment. 3D glasses 2.
其中， 显示设备 1包括信号处理电路 SOC、 时序控制电路 TCON、 液晶显示屏 LCD和发射单元。 信号处理电路 SOC通过外围接口电路接 收外部 3D视频信号， 进行信号处理， 然后经 LVDS信号输出给时序控 制电路 TCON, 由时序控制电路 TCON进行数据信号和同步信号分离， 分离数据信号通过 LVDS信号输出给液晶显示屏 LCD, 数据信号用于液 晶显示屏 LCD上图像显示。  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.
其中，同步信号由发射单元进一步进行处理，处理方法同实施例一， 在此不再重复赘述， 经发射单元处理的第一控制信号用于驱动液晶显示 屏 LCD图像刷新。  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.
3D眼镜 2包括接收单元和 3D眼镜左右眼镜片。 接收单元同实施 例二中接收单元， 在此不再重复赘述。  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.
尽管已描述了本发明的优选实施例， 但本领域内的技术人员一旦得 知了基本创造性概念， 则可对这些实施例作出另外的变更和修改。所以， 所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有 变更和修改。 显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱 离本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发 明权利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和 变型在内。 Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, and so, It is intended that the appended claims be interpreted as including It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

权 利 要 求 书 Claim
1、 一种 3D同步信号传输系统， 包括发射单元和接收单元， 其特 征在于，  A 3D synchronous signal transmission system comprising a transmitting unit and a receiving unit, wherein the feature is that
所述发射单元设置于显示设备中， 其包括：  The transmitting unit is disposed in the display device, and includes:
同步信号生成单元， 基于 3D视频信号生成第一同步信号； 背光信号调制单元， 与所述同步信号生成单元连接， 用于将所述第 一同步信号与背光控制信号进行调制， 生成第一控制信号；  a synchronization signal generating unit, configured to generate a first synchronization signal based on the 3D video signal; a backlight signal modulating unit coupled to the synchronization signal generating unit, configured to modulate the first synchronization signal and the backlight control signal to generate a first control signal ;
背光驱动单元， 与背光控制信号调制单元连接， 接收所述第一控制 信号， 用于驱动所述显示设备背光模块发光；  The backlight driving unit is connected to the backlight control signal modulating unit, and receives the first control signal for driving the backlight of the display device to emit light;
所述接收单元设置于 3D眼镜中， 其包括：  The receiving unit is disposed in the 3D glasses, and includes:
感光器， 用于将包括背光变化的光信号转化为第二控制信号； 同步信号识别单元， 与所述感光器连接， 用于从所述第二控制信号 中识别所述第一同步信号；  a photoreceptor for converting an optical signal including a backlight change into a second control signal; a synchronization signal recognition unit connected to the photoreceptor for identifying the first synchronization signal from the second control signal;
眼镜时序控制单元， 与所述同步信号识别单元连接， 用于根据识别 所述第一同步信号生成第三控制信号， 所述第三控制信号用于控制 3D 眼镜的左右眼镜片的开关时序。  The glasses timing control unit is connected to the synchronization signal identification unit for generating a third control signal for identifying the switching timing of the left and right eyeglasses of the 3D glasses according to the identification of the first synchronization signal.
2、 根据权利要求 1所述的装置， 其特征在于， 所述同步信号生成 单元， 基于 3D视频信号生成第一同步信号， 具体为：  The device according to claim 1, wherein the synchronization signal generating unit generates a first synchronization signal based on the 3D video signal, specifically:
接收 3D视频信号；  Receiving a 3D video signal;
从所述 3D视频信号中获取视频同步信号；  Obtaining a video synchronization signal from the 3D video signal;
采用载波对视频同步信号进行调制， 获取第一同步信号。  The video synchronization signal is modulated by the carrier to obtain the first synchronization signal.
3、 根据权利要求 2所述的方法， 其特征在于， 所述同步信号生成 单元中获取的所述视频同步信号， 包括左眼图像视频同步信号和右眼图 像视频同步信号。  3. The method according to claim 2, wherein the video synchronization signal acquired in the synchronization signal generating unit comprises a left eye image video synchronization signal and a right eye image video synchronization signal.
4、 根据权利要求 2所述的方法， 其特征在于， 所述背光信号调制 单元中的载波为 38kHz方波信号。 4. The method according to claim 2, wherein the carrier in the backlight signal modulating unit is a 38 kHz square wave signal.
5、 根据权利要求 4所述的装置， 其特征在于， 所述第一同步信号 为连续数字脉冲信号， 其中， 所述同步信号识别单元， 用于从所述第二 控制信号中识别所述第一同步信号， 具体用于： The device according to claim 4, wherein the first synchronization signal is a continuous digital pulse signal, wherein the synchronization signal identification unit is configured to identify the first control signal from the second control signal A synchronization signal, specifically for:
从所述第二控制信号中提取对应背光变化的脉冲宽度和脉冲次数， 根据所述脉冲宽度和脉冲次数识别所述第一同步信号。  Extracting a pulse width and a pulse number corresponding to the backlight change from the second control signal, and identifying the first synchronization signal according to the pulse width and the number of pulses.
6、 根据权利要求 1-5任一所述的装置， 其特征在于， 所述同步信 号生成单元和所述背光信号调制单元中调制方式均为数字脉冲调制。  The apparatus according to any one of claims 1-5, wherein the modulation method in the synchronization signal generating unit and the backlight signal modulating unit is digital pulse modulation.
7、 根据权利要求 1-5任一所述的装置， 其特征在于， 所述背光信 号调制单元中采用的所述背光控制信号为 PWM信号。  The device according to any one of claims 1-5, wherein the backlight control signal used in the backlight signal modulating unit is a PWM signal.
8、 一种 3D同步信号传输方法， 应用于包括显示屏的 3D显示设 备中， 其特征在于，  8. A 3D synchronous signal transmission method for use in a 3D display device including a display screen, characterized in that
基于 3D视频信号生成第一同步信号；  Generating a first synchronization signal based on the 3D video signal;
将所述第一同步信号与背光控制信号进行调制， 生成第一控制信 号；  And modulating the first synchronization signal and the backlight control signal to generate a first control signal;
所述第一控制信号驱动所述显示屏背光发光；  The first control signal drives the display screen backlight to emit light;
将包括背光变化的光信号转化为第二控制信号；  Converting an optical signal including a backlight change into a second control signal;
从所述第二控制信号中识别所述第一同步信号；  Identifying the first synchronization signal from the second control signal;
根据识别第一同步信号生成第三控制信号，所述第三控制信号用于 控制 3D眼镜的左右眼镜片的开关时序。  A third control signal is generated based on the identification of the first synchronization signal, the third control signal being used to control the switching timing of the left and right eyeglass lenses of the 3D glasses.
9、 根据权利要求 8所述的方法,其特征在于,所述步骤基于 3D视频 信号生成第一同步信号， 具体包括：  The method according to claim 8, wherein the step of generating the first synchronization signal based on the 3D video signal comprises:
接收 3D视频信号；  Receiving a 3D video signal;
从所述 3D视频信号中获取视频同步信号；  Obtaining a video synchronization signal from the 3D video signal;
采用载波对视频同步信号进行调制， 获取第一同步信号。  The video synchronization signal is modulated by the carrier to obtain the first synchronization signal.
10、 根据权利要求 9所述的方法， 其特征在于， 所述视频同步 信号包括左眼图像视频同步信号和右眼图像视频同步信号。 10. The method according to claim 9, wherein the video synchronization signal comprises a left eye image video synchronization signal and a right eye image video synchronization signal.
11、 根据权利要求 9 所述的方法， 其特征在于， 所述载波为 38kHz方波信号。 11. The method of claim 9, wherein the carrier is a 38 kHz square wave signal.
12、 根据权利要求 11所述的方法， 其特征在于， 所述第一同步 信号为数字脉冲信号， 其中， 步骤所述从所述第二控制信号中识别第一 同步信号， 具体为：  The method according to claim 11, wherein the first synchronization signal is a digital pulse signal, wherein the step of identifying the first synchronization signal from the second control signal is specifically:
从所述第二控制信号中提取对应背光变化的脉冲宽度和脉冲次数， 根据上述脉冲宽度和脉冲次数识别所述第一同步信号。  Extracting a pulse width and a pulse number corresponding to the backlight change from the second control signal, and identifying the first synchronization signal according to the pulse width and the number of pulses.
13、 根据权利要求 8-12任一所述的方法， 其特征在于， 所述调 制为数字脉冲调制。  13. Method according to any of claims 8-12, characterized in that the modulation is digital pulse modulation.
14、 根据权利要求 8-12任一所述的方法， 其特征在于， 所述背 光控制信号为 PWM信号。  The method according to any one of claims 8-12, wherein the backlight control signal is a PWM signal.
15、 一种 3D电视机， 其特征在于， 所述 3D电视包括权利要求 1-7任一所述显示设备， 及配备权利要求 1-7任一所述 3D眼镜。  A 3D television set, comprising: the display device according to any one of claims 1-7, and the 3D glasses according to any one of claims 1-7.
PCT/CN2013/086873 2013-01-31 2013-11-11 Method and apparatus for transmitting 3d synchronous signal, and 3d television WO2014117557A1 (en)

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