JP6064358B2 - Shutter device, image display system, and timing adjustment method - Google Patents

Description

  The present invention relates to a shutter device, an image display system, and a timing adjustment method.

  Conventionally, there has been known a system including an image output device that outputs a 3D image composed of a left-eye image and a right-eye image, and 3D glasses used to view the 3D image output from the image output device. (For example, refer to Patent Document 1). In the above system, the 3D glasses include left and right shutters that are driven so as to alternately transmit the left-eye image and the right-eye image (alternately transmit and block light to the left and right eyes), and receive synchronization from the outside. A shutter drive signal is generated based on the signal, and the shutter is driven at a drive timing based on the shutter drive signal.

JP 2010-61105 A

However, the synchronization signal received by the 3D glasses is defined in advance so that the shutter of the 3D glasses is driven at a predetermined drive timing based on the display timing of the 3D image. That is, the driving timing of the shutter of the 3D glasses is constant. Therefore, the following problems arise.
1. When the shutter opening time at a predetermined drive timing is long for a certain user, the user hardly perceives that the video is dark, but the left-eye image and the right-eye image are easy to see. That is, it is easy to feel crosstalk that causes discomfort.
2. When the shutter opening time at a predetermined driving timing is short for a certain user, the user hardly feels the crosstalk that causes unpleasant feeling, but easily feels that the image is dark.
Crosstalk sensitivity varies among individuals. For this reason, a user who does not feel crosstalk sometimes does not feel crosstalk even if the shutter opening time is increased in order to brighten the image. In addition, for example, a user who easily feels crosstalk may want to reduce crosstalk by shortening the shutter opening time even if the image is darkened. However, as described above, since the driving timing of the shutter of the 3D glasses is constant, there is a problem that the balance between the brightness of the video and the crosstalk cannot be adjusted.

  The present invention has been made in view of such circumstances, and provides a technique capable of adjusting the balance between video brightness and crosstalk.

In order to solve the above problem, a shutter device according to one embodiment of the present invention controls a shutter unit that transmits a left-eye image and a right-eye image that form a stereoscopic image by driving, and controls a driving timing of the shutter unit. A synchronization signal receiving unit that receives a synchronization signal, an adjustment information receiving unit that receives input of adjustment information for adjusting the drive timing of the shutter unit, the synchronization signal received by the synchronization signal receiving unit, and the adjustment A shutter driving unit that drives the shutter unit according to the adjustment information received by the information receiving unit.
According to the above configuration, since the shutter device drives the shutter unit according to the adjustment information, the user of the shutter device inputs the adjustment information and adjusts the balance between crosstalk and brightness according to his / her sense. I can.

In the shutter device, the shutter driving unit drives the shutter unit according to the corrected driving timing in which the driving timing based on the synchronization signal received by the synchronization signal receiving unit is corrected based on the adjustment information. You may make it make it.
According to the above configuration, a predetermined drive timing can be corrected to obtain a desired drive timing.

In the shutter device, the drive timing based on the synchronization signal without changing the central time of the transmission time of the left-eye image and the right-eye image based on the drive timing based on the synchronization signal received by the synchronization signal receiving unit. May be corrected.
According to the above configuration, the shutter opening time can be adjusted to be maximized while the switching between the left-eye image and the right-eye image is not visible.

The shutter device may further include an adjustment information transmission unit that transmits the adjustment information.
According to the above configuration, if the light source control according to the adjustment information is realized in the image display device, the light source can be controlled according to the correction of the shutter drive timing.

In order to solve the above problems, an image display system according to another aspect of the present invention is used to view a stereoscopic image including a stereoscopic image including a left-eye image and a right-eye image, and the stereoscopic image. In the image display system including a shutter device, the shutter device transmits a left-eye image and a right-eye image that constitute the stereoscopic image by driving, and a synchronization signal that controls driving timing of the shutter portion. A synchronization signal receiving unit for receiving, an adjustment information receiving unit for receiving input of adjustment information for adjusting the drive timing of the shutter unit, the synchronization signal received by the synchronization signal receiving unit, and the adjustment information receiving unit A shutter driving unit that drives the shutter unit in accordance with the adjustment information received by An adjustment information transmission unit that transmits information, and the image display device displays an image display unit that displays the stereoscopic image, a synchronization signal generation unit that generates the synchronization signal to be transmitted to the shutter device, and the shutter An adjustment information receiving unit that acquires the adjustment information transmitted from the apparatus, and a light source control unit that controls a light source of the image display unit according to the display timing of the stereoscopic image and the adjustment information received by the adjustment information receiving unit It is characterized by having.
According to the above configuration, the light source can be controlled according to the correction of the shutter drive timing.

In the image display system, the adjustment information receiving unit receives the adjustment information of each of the plurality of shutter devices, and the light source control unit includes the display timing, a left-eye image of each of the adjustment information, and The light source may be controlled in accordance with the adjustment information for adjusting the transmission time of the right-eye image to the maximum.
According to the above configuration, the light source can be controlled so as to ensure necessary light for any user's viewing.

In order to solve the above problem, a timing adjustment method according to another aspect of the present invention is a timing adjustment method in a shutter device including a shutter unit that transmits a left-eye image and a right-eye image that form a stereoscopic image by driving. The synchronization signal receiving unit of the shutter device receives a synchronization signal for controlling the driving timing of the shutter unit, and the adjustment information receiving unit of the shutter device is an adjustment for adjusting the driving timing of the shutter unit. The input of information is received, and the shutter driving unit of the shutter device drives the shutter unit according to the synchronization signal and the adjustment information received by the synchronization signal receiving unit.
According to the said structure, the above-mentioned effect can be acquired.

It is an example of a functional block diagram of an image display system including a shutter device according to the first embodiment of the present invention. It is an example of the screen regarding the adjustment information by the 1st Embodiment of this invention. It is a storage example of adjustment information according to the first embodiment of the present invention. It is explanatory drawing explaining the relationship between adjustment information and a shutter drive signal in the 1st Embodiment of this invention. It is explanatory drawing explaining the relationship between adjustment information and a shutter drive signal in the 1st Embodiment of this invention. It is explanatory drawing explaining the relationship between adjustment information and a shutter drive signal in the 1st Embodiment of this invention. It is a flowchart which shows an example of operation | movement of the shutter apparatus by the 1st Embodiment of this invention. It is an example of the functional block diagram of the image display system containing the shutter apparatus by the 2nd Embodiment of this invention. It is a control example of the light source by the 2nd Embodiment of this invention.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an example of a functional block diagram of an image display system 1 including a shutter device according to the first embodiment of the present invention.

  As shown in FIG. 1, the image display system 1 includes an image display device 10 that displays a 3D image (stereoscopic image) including a left-eye image and a right-eye image, and a 3D image viewing used for viewing the 3D image. Glasses (shutter device; hereinafter referred to as “3D glasses”) 20. The image display device 10 corresponds to, for example, a 3D television, a projector, or the like. Although one 3D glasses 20 are shown in FIG. 1, the image display system 1 may include a plurality of 3D glasses 20.

(Image display device 10)
The image display apparatus 10 includes a control unit (CPU) 100, an image display unit 110, and a communication unit 120. The control unit 100 includes an image control unit 102, a light source control unit 104, a timing control unit 106, and a synchronization signal generation unit 108. The image display unit 110 includes a liquid crystal panel 112 and a light source 114. The communication unit 120 includes a synchronization signal transmission unit 122.

  The image control unit 102 acquires (receives) a 3D image from the outside or the inside. For example, the image control unit 102 acquires a 3D image from an external device (for example, a personal computer or a server). For example, when the image display apparatus 10 includes an antenna unit (not shown), the image control unit 102 receives a 3D image from a broadcast station (broadcast wave) via the antenna unit. For example, when the image display device 10 includes an image storage unit (not shown), the image control unit 102 acquires a 3D image from the image storage unit. The image control unit 102 temporarily stores the acquired 3D image.

  In addition, the image control unit 102 acquires display timing (display timing signal). The image control unit 102 acquires the display timing from the timing control unit 106 in the case of acquiring 3D images from the outside (for example, a personal computer, a server, or a broadcast station). Moreover, in the case of the aspect which acquires a 3D image from the inside (for example, built-in image storage part), the image control part 102 may acquire a display timing from the inside (for example, timing storage part (not shown)).

  When the display timing is acquired, the image control unit 102 outputs the temporarily stored 3D image to the liquid crystal panel 112 at the acquired display timing. That is, the image control unit 102 performs necessary processing (scaling, keystone, frame rate conversion, etc.) on the temporarily stored 3D image, and drives the liquid crystal panel 112 at the acquired display timing to display the 3D image. indicate.

  Further, when the display timing is acquired from the timing control unit 106, the image control unit 102 outputs the display timing acquired from the timing control unit 106 to the light source control unit 104. Further, when the display timing is acquired from the timing storage unit, the image control unit 102 outputs the display timing acquired from the timing storage unit to the light source control unit 104 and the timing control unit 106.

  The light source control unit 104 acquires display timing from the image control unit 102. When the display timing is acquired from the image control unit 102, the light source control unit 104 controls the light source 114 according to the display timing acquired from the image control unit 102.

  The liquid crystal panel 112 is a light modulation device that modulates light emitted from the light source 114 based on image data representing a 3D image acquired from the image control unit 102. When the image display device 10 is a projector, light representing a 3D image modulated by the liquid crystal panel 112 is projected onto a screen (not shown) installed in front of the image display device 10 by a lens (not shown). Is done.

  The timing control unit 106 acquires display timing from the outside (for example, a personal computer, a server, a broadcasting station) or the image control unit 102. When the display timing is acquired from the outside, the timing control unit 106 outputs the display timing acquired from the outside to the image control unit 102 and the synchronization signal generation unit 108. Further, when the display timing is acquired from the image control unit 102, the timing control unit 106 outputs the display timing acquired from the image control unit 102 to the synchronization signal generation unit 108.

  The synchronization signal generation unit 108 acquires the display timing from the timing control unit 106. When the display timing is acquired from the timing control unit 106, the synchronization signal generation unit 108 generates a synchronization signal to be transmitted to the 3D glasses 20 according to the display timing acquired from the timing control unit 106.

  When the synchronization signal is generated, the synchronization signal generation unit 108 outputs the generated synchronization signal to the synchronization signal transmission unit 122. The synchronization signal output to the synchronization signal transmission unit 122 is transmitted to the 3D glasses 20 and is used to generate a shutter drive signal that controls the drive timing of the shutter unit 240. That is, the synchronization signal generation unit 108 controls the drive timing of the shutter unit 240 of the 3D glasses 20 by generating a synchronization signal.

  The synchronization signal transmission unit 122 acquires the synchronization signal from the synchronization signal generation unit 108. When the synchronization signal transmission unit 122 acquires the synchronization signal from the synchronization signal generation unit 108, the synchronization signal transmission unit 122 transmits the synchronization signal acquired from the synchronization signal generation unit 108 to the 3D glasses 20 by wireless communication. The “wireless communication” is communication that does not use a line as a transmission path. As the wireless communication between the image display device 10 and the 3D glasses 20, infrared communication or Bluetooth may be used when there is one 3D glasses 20, and Bluetooth may be used when there are a plurality of 3D glasses 20.

(3D glasses 20)
The 3D glasses 20 include a communication unit 220, a shutter driving unit 230, a shutter unit 240, an adjustment information receiving unit 280, and an adjustment information storage unit 290. The communication unit 220 includes a synchronization signal receiving unit 222. The shutter drive unit 230 includes a signal analysis unit 232, a drive signal generation unit 234, and a timing adjustment unit 236. The shutter unit 240 includes a left eye shutter 240L and a right eye shutter 240R each including a liquid crystal panel.

  The adjustment information receiving unit 280 receives input (setting) of adjustment information from the user. The adjustment information receiving unit 280 stores the adjustment information in the adjustment information storage unit 290. The adjustment information is information for adjusting the synchronization between the display timing of the 3D image and the 3D glasses 20 in order to adjust the balance between the brightness of the video and the crosstalk. The adjustment information is also referred to as glasses control timing change information.

  The synchronization signal receiving unit 222 receives a synchronization signal from the image display device 10 by wireless communication. When receiving the synchronization signal from the image display device 10, the synchronization signal reception unit 222 outputs the synchronization signal received from the image display device 10 to the signal analysis unit 232.

  The signal analysis unit 232 acquires the synchronization signal from the synchronization signal reception unit 222. When the synchronization signal is acquired from the synchronization signal receiver 222, the signal analyzer 232 analyzes the synchronization signal acquired from the synchronization signal receiver 222. Specifically, the signal analysis unit 232 analyzes the synchronization signal using protocol information stored in a protocol storage unit (not shown). The signal analysis unit 232 outputs the analysis result of the synchronization signal to the drive signal generation unit 234.

  The drive signal generation unit 234 acquires the analysis result of the synchronization signal from the signal analysis unit 232. When the drive signal generation unit 234 acquires the analysis result of the synchronization signal from the signal analysis unit 232, the drive signal generation unit 234 generates the first shutter drive signal based on the analysis result of the synchronization signal acquired from the signal analysis unit 232. The drive signal generation unit 234 outputs the first shutter drive signal to the timing adjustment unit 236.

  The timing adjustment unit 236 acquires the first shutter drive signal from the drive signal generation unit 234. When the timing adjustment unit 236 acquires the first shutter drive signal from the drive signal generation unit 234, the timing adjustment unit 236 acquires the first shutter drive signal acquired from the drive signal generation unit 234 and the adjustment stored in the adjustment information storage unit 290. According to the information, a second shutter drive signal is generated as necessary. Although details will be described later, in brief, the timing adjustment unit 236 generates a second shutter drive signal when adjustment information indicating that adjustment is required is stored. For example, the timing adjustment unit 236 uses the delay time counter to adjust the timing of the first shutter drive signal periodically acquired from the drive signal generation unit 234, and generates the second shutter drive signal. On the other hand, the timing adjustment unit 236 does not generate the second shutter drive signal when adjustment information indicating that adjustment is required is not stored.

  When the timing adjustment unit 236 generates the second shutter drive signal, the timing adjustment unit 236 outputs the second shutter drive signal to the shutter unit 240. When the second shutter drive signal is not generated, the timing adjustment unit 236 outputs the first shutter drive signal acquired from the drive signal generation unit 234 to the shutter unit 240.

  That is, the default (standard) shutter drive signal before the balance between the image brightness and the crosstalk is adjusted by the adjustment information corresponds to the first shutter drive signal, and the balance between the image brightness and the crosstalk is adjusted by the adjustment information. The adjusted shutter drive signal corresponds to the second shutter drive signal. The shutter drive signals (first shutter drive signal and second shutter drive signal) are signals for controlling the transmittance of the liquid crystal panel of the left eye shutter 240L and the transmittance of the liquid crystal panel of the right eye shutter 240R.

  As described above, the shutter drive unit 230 (the signal analysis unit 232, the drive signal generation unit 234, and the timing adjustment unit 236) drives the shutter unit 240 according to the synchronization signal received from the image display device 10 and the adjustment information. ing.

  The shutter unit 240 acquires a shutter drive signal (first shutter drive signal or second shutter drive signal) from the timing adjustment unit 236. When the shutter unit 240 acquires a shutter drive signal from the timing adjustment unit 236, the shutter unit 240 alternately drives the left eye shutter 240L and the right eye shutter 240R according to the shutter drive signal acquired from the timing adjustment unit 236. That is, the left-eye shutter 240L of the shutter unit 240 transmits a left-eye image of a 3D image displayed by the image display device 10 (for example, a 3D image projected by a projector or a 3D image displayed by a 3D television) according to a shutter drive signal. , Block the image for the right eye. On the other hand, the right-eye shutter 240R transmits the right-eye image of the 3D image displayed by the image display device 10 and blocks the left-eye image. As a result, when a 3D image is viewed through the 3D glasses 20, the left eye image and the right eye image are alternately transmitted to the user's left eye and right eye, and the 3D image can be viewed as intended.

  Here, when the first shutter drive signal is acquired from the timing adjustment unit 236, the shutter unit 240 provides the user with a standard balanced 3D image regarding the balance between video brightness and crosstalk. On the other hand, when the shutter unit 240 acquires the second shutter drive signal from the timing adjustment unit 236, the shutter unit 240 obtains a balanced 3D image adjusted (corrected) from a standard balance with respect to the balance between the brightness of the video and the crosstalk. Provide to users.

  FIG. 2 is a screen example relating to adjustment information according to the first embodiment of the present invention. The 3D glasses 20 include a display unit (not shown), and displays a screen related to adjustment information on the display unit. For example, the 3D glasses 20 display the screen of FIG. The screen of FIG. 2A represents adjustment information (setting value) of the 3D glasses 20.

  The user sets adjustment information values (“−50” to “+50”, initial value “0”) on the screen of FIG. For example, the user sets a negative value when giving priority to the brightness of the video regarding the balance between the brightness of the video and the crosstalk. In addition, the user sets a positive value regarding the balance between video brightness and crosstalk when priority is given to reduction of crosstalk (hereinafter also referred to as “priority of image quality”). In addition, the triangle of Fig.2 (a) represents the setting value. That is, the 3D glasses 20 are set to brightness priority (set value “−30”). Note that the 3D glasses 20 may display the screen of FIG. 2B or FIG. 2C instead of the screen of FIG.

  When the screens of FIGS. 2A and 2C are displayed, the user changes (increases / decreases) the set value using a hard button (PUSH switch, slide switch, etc., not shown) on the 3D glasses 20. When the screen of FIG. 2B is displayed, the user changes the set value using an increase / decrease button (plus button, minus button) provided on the screen.

  FIG. 3 is a storage example of adjustment information according to the first embodiment of the present invention. The adjustment information storage unit 290 of the 3D glasses 20 stores adjustment information as illustrated in FIG. Note that FIG. 3B will be described later.

  4 to 6 are explanatory diagrams illustrating the relationship between the adjustment information and the shutter drive signal in the first embodiment of the present invention. Specifically, FIG. 4 is an explanatory diagram illustrating a shutter drive signal generated when the set value is “0”. FIG. 5 is an explanatory diagram illustrating a shutter drive signal generated when the set value is “−30”. FIG. 6 is an explanatory diagram for explaining a shutter drive signal generated when the set value is “+20”.

  4 to 6, the video signal R is a right-eye image, and the video signal L is a left-eye image. A broken line is the center time of the transmission time of the left-eye image and the right-eye image. “R_open”, “R_close”, “L_open”, and “L_close” are synchronization signals. Specifically, “R_open” is an open (transmission start) signal for the right eye shutter 240R, “R_close” is a close (transmission end) signal for the right eye shutter 240R, “L_open” is an open signal for the left eye shutter 240L, and “L_close” is It is a close signal of the left eye shutter 240L. 4 to 6, the right eye shutter transmittance is the transmittance of the liquid crystal panel of the right eye shutter 240R, and the left eye shutter transmittance is the transmittance of the liquid crystal panel of the left eye shutter 240L.

(When the setting value is “0”)
As illustrated in FIG. 4, the drive signal generation unit 234 generates a first shutter drive signal (“r_open”, “r_close”, “l_open”, “l_close”) based on the analysis result of the synchronization signal acquired from the signal analysis unit 232. Is generated. The timing adjustment unit 236 acquires the first shutter drive signal from the drive signal generation unit 234, reads the adjustment information (setting value “0”) from the adjustment information storage unit 290, and acquires the first shutter drive signal from the drive signal generation unit 234. It is interpreted (determined) that adjustment (correction) of the first shutter drive signal is not required. Subsequently, the timing adjustment unit 236 outputs the first shutter drive signal acquired from the drive signal generation unit 234 to the shutter unit 240. The shutter unit 240 acquires the first shutter drive signal and drives the left eye shutter 240L and the right eye shutter 240R alternately as shown in FIG.

(When the setting value is “−30”)
As illustrated in FIG. 5, the drive signal generation unit 234 generates the first shutter drive signal (“r_open”, “r_close”, “l_open”, “l_close”) based on the analysis result of the synchronization signal acquired from the signal analysis unit 232. Is generated. The timing adjustment unit 236 acquires the first shutter drive signal from the drive signal generation unit 234 and also reads the adjustment information (setting value “−30”) from the adjustment information storage unit 290 and acquires it from the drive signal generation unit 234. The first shutter drive signal is interpreted (determined) as requiring brightness-priority adjustment (correction), and the second shutter drive signal is corrected based on the adjustment information (setting value “−30”). The shutter drive signal is generated. Specifically, as shown in FIG. 5, the timing adjustment unit 236 is set so as not to change the center time of the transmission time (shutter opening time) of the left-eye image and the right-eye image by the first shutter drive signal. For the time corresponding to the value “−30”, the transmission start timing (“r_open” “l_open”) is advanced, and the transmission end timing (“r_close” “l_close”) is delayed. The reason why the center time is not changed is to make the switching portion (inside the dotted line in the figure) between the left-eye image and the right-eye image as invisible as possible. Subsequently, the timing adjustment unit 236 outputs a second shutter drive signal obtained by correcting the first shutter drive signal acquired from the drive signal generation unit 234 to the shutter unit 240. The shutter unit 240 acquires the second shutter drive signal and drives the left eye shutter 240L and the right eye shutter 240R alternately as shown in FIG. That is, when the set value is negative, the transmission time is increased (the image becomes brighter) than when the set value is zero.

(When the setting value is “+20”)
As illustrated in FIG. 6, the drive signal generation unit 234 generates a first shutter drive signal (“r_open”, “r_close”, “l_open”, “l_close”) based on the analysis result of the synchronization signal acquired from the signal analysis unit 232. Is generated. The timing adjustment unit 236 acquires the first shutter drive signal from the drive signal generation unit 234, reads the adjustment information (setting value “+20”) from the adjustment information storage unit 290, and acquires the first shutter drive signal from the drive signal generation unit 234. It is interpreted (determined) that image quality priority adjustment (correction) is required for the first shutter drive signal, and the first shutter drive signal is corrected based on the adjustment information (setting value “+20”) to perform the second shutter drive. Generate a signal. Specifically, as shown in FIG. 6, the timing adjustment unit 236 is set so as not to change the central time of the transmission time (shutter opening time) of the left-eye image and the right-eye image by the first shutter drive signal. For the time corresponding to the value “+20”, the transmission start timing (“r_open” “l_open”) is delayed, and the transmission end timing (“r_close” “l_close”) is advanced. Subsequently, the timing adjustment unit 236 outputs a second shutter drive signal obtained by correcting the first shutter drive signal acquired from the drive signal generation unit 234 to the shutter unit 240. The shutter unit 240 acquires the second shutter drive signal and drives the left eye shutter 240L and the right eye shutter 240R alternately as shown in FIG. That is, when the set value is positive, the transmission time is reduced (crosstalk is reduced) compared to when the set value is zero.

  Hereinafter, the operation of the image display system 1 will be described with reference to FIG. FIG. 7 is a flowchart showing an example of the operation of the 3D glasses 20 (shutter device) according to the first embodiment of the present invention. FIG. 7A shows an operation related to acquisition of adjustment information, and FIG. 7B shows an operation related to control based on the adjustment information.

  In FIG. 7A, the adjustment information receiving unit 280 receives input of adjustment information (setting value) from the user (step S10). The adjustment information receiving unit 280 stores the adjustment information in the adjustment information storage unit 190 (step S12). Then, the flowchart of FIG. 7A ends.

  In FIG. 7B, the synchronization signal receiving unit 222 receives the synchronization signal from the image display device 10 (step S20). The signal analysis unit 232 analyzes the synchronization signal using the protocol information stored in the protocol storage unit (not shown) (step S22). The drive signal generation unit 234 generates a first shutter drive signal based on the analysis result of the synchronization signal (step S22). The timing adjustment unit 236 obtains the first shutter drive signal from the drive signal generation unit 234 and determines whether or not the set value of the adjustment information stored in the adjustment information storage unit 290 is zero (step) S26). That is, the timing adjustment unit 236 that has acquired the first shutter drive signal from the drive signal generation unit 234 determines whether or not the first shutter drive signal needs to be corrected based on the adjustment information.

  When the set value is zero (step S26: Yes), that is, when correction is not required, the timing adjustment unit 236 outputs the first shutter drive signal acquired from the drive signal generation unit 234 to the shutter unit 240. That is, the timing adjustment unit 236 drives the shutter unit 240 based on the first shutter drive signal (step S28). Then, the flowchart of FIG. 7B ends.

  On the other hand, when the set value is not zero (step S26: No), that is, when correction is required, the timing adjustment unit 236 corrects the first shutter drive signal based on the adjustment information and outputs the second shutter drive signal. Generate (step S30). Subsequently, the timing adjustment unit 236 outputs the generated second shutter drive signal to the shutter unit 240. That is, the timing adjustment unit 236 drives the shutter unit 240 based on the second shutter drive signal (step S32). Then, the flowchart of FIG. 7B ends.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 8 is an example of a functional block diagram of the image display system 2 including the 3D glasses 21 (shutter device) according to the second embodiment of the present invention.

  As shown in FIG. 8, the image display system 2 includes an image display device 11 and 3D glasses 21. Although one 3D glasses 21 are shown in FIG. 8, the image display system 2 may include a plurality of 3D glasses 21.

(3D glasses 21)
The 3D glasses 21 include a communication unit 250, a shutter drive unit 230, a shutter unit 240, an adjustment information reception unit 280, and an adjustment information storage unit 290. The communication unit 250 includes a synchronization signal receiving unit 222 and an adjustment information transmitting unit 224. The 3D glasses 21 of the image display system 2 have an adjustment information transmission unit 224 added to the 3D glasses 20 of the image display system 1. The adjustment information transmitting unit 224 transmits the adjustment information received by the adjustment information receiving unit 280 to the image display device 10 by wireless communication.

(Image display device 11)
The image display device 11 includes a control unit 130, an image display unit 110, a communication unit 140, and an adjustment information storage unit 190. The control unit 130 includes an image control unit 102, a light source control unit 105, a timing control unit 106, and a synchronization signal generation unit 108. The image display unit 110 includes a liquid crystal panel 112 and a light source 114. The communication unit 140 includes a synchronization signal transmission unit 122 and an adjustment information reception unit 124. The image control unit 102, the timing control unit 106, the synchronization signal generation unit 108, the liquid crystal panel 112, the light source 114, and the synchronization signal transmission unit 122 are the same as those in the image display system 1.

  The adjustment information receiving unit 124 receives adjustment information from the 3D glasses 21. When the adjustment information receiving unit 124 receives the adjustment information from the 3D glasses 21, the adjustment information receiving unit 124 stores the adjustment information received from the 3D glasses 21 in the adjustment information storage unit 190.

  The light source control unit 105 acquires display timing from the image control unit 102. When the display timing is acquired from the image control unit 102, the light source control unit 105 controls the light source 114 according to the display timing acquired from the image control unit 102 and the adjustment information stored in the adjustment information storage unit 190. Details of the light source control unit 105 will be described later.

FIG. 9 is a control example of the light source 114 according to the second embodiment of the present invention. In FIG.
The shutter drive signal A is a shutter drive signal (first shutter drive signal, see FIG. 4) transmitted to the shutter unit 240 in certain 3D glasses 21 (3D glasses A). The shutter drive signal B is a shutter drive signal (second synchronization signal, see FIG. 5) transmitted to the shutter unit 240 in certain 3D glasses 21 (3D glasses B). The shutter drive signal C is a shutter drive signal (second synchronization signal, see FIG. 6) transmitted to the shutter unit 240 in certain 3D glasses 21 (3D glasses C).

  The adjustment information receiving unit 124 receives adjustment information from each of the 3D glasses 21 (3D glasses A, B, and C). Specifically, the adjustment information receiving unit 124 receives the adjustment information (setting value “0”) from the 3D glasses A, receives the adjustment information (setting value “−30”) from the 3D glasses B, and receives the 3D glasses C. Adjustment information (set value “+20”) is received. Therefore, in the adjustment information storage unit 190, the adjustment information of the 3D glasses A (setting value “0”), the adjustment information of the 3D glasses B (setting value “−30”), and the adjustment information of the 3D glasses C (setting value) “+20”) is stored.

  When the light source control unit 105 acquires the display timing from the image control unit 102, the left eye image and the right eye among the display timing acquired from the image control unit 102 and the adjustment information stored in the adjustment information storage unit 190. The light source 114 is controlled according to the adjustment information for adjusting the transmission time of the image for maximum use.

  Of the adjustment information of the 3D glasses A (setting value “0”), the adjustment information of the 3D glasses B (setting value “−30”), and the adjustment information of the 3D glasses C (setting value “+20”), the transmission time is The adjustment information to be adjusted to the maximum is the adjustment information of the 3D glasses B (see FIG. 9). Accordingly, the light source control unit 105 is illustrated in FIG. 9 according to the display timing acquired from the image control unit 102 and the adjustment information (setting value “−30”) of the 3D glasses B stored in the adjustment information storage unit 190. Thus, the light source 114 is controlled. More specifically, the light source control unit 105 controls the light source 114 so that the light source 114 emits light at least during the transmission time according to the synchronization signal B, as indicated by a one-dot chain line in the drawing. That is, the light source control unit 105 controls the light source 114 according to the 3D glasses B that display the brightest image among the 3D glasses A, 3D glasses B, and 3D glasses C.

  Although the first and second embodiments have been described above, the 3D glasses 20 (21) described in the first and second embodiments generate a shutter drive signal corresponding to the adjustment information, and the shutter unit 240 is In order to drive, according to the 3D glasses 20 (21), the user appropriately inputs the adjustment information, adjusts the drive timing (transmission time), and the 3D image in the balance between brightness and crosstalk that suits his sense. Can be watched. For example, when the crosstalk becomes strong but it is desired to increase the brightness, the set value of the adjustment information may be set to a negative value as shown in FIG. Conversely, when it is desired to weaken the crosstalk at the expense of brightness, the setting value of the adjustment information may be set to a positive value as shown in FIG.

  Further, since the 3D glasses 21 transmit the adjustment information to the image display device 11 and the image display device 11 controls the light source 114 in accordance with the adjustment information, the optimal light source emission even after the adjustment of the drive timing (transmission time). A 3D image according to a period can be visually recognized. Specifically, as shown in FIG. 9, the length of the light emission time is adjusted in accordance with the 3D glasses having the longest transmission time. Therefore, it is possible to save power while securing necessary light.

In the above embodiment, the shutter drive unit 230 corrects the drive timing obtained from the synchronization signal received by the synchronization signal reception unit 222 based on the adjustment information, and drives the shutter unit 240 according to the corrected drive timing. As an aspect, the shutter drive signal (first shutter drive signal) obtained from the analysis result of the synchronization signal is corrected based on the adjustment information, and the corrected shutter drive signal (second shutter drive signal) is sent to the shutter unit 240. Although the output mode has been described, the shutter driving unit 230 corrects the analysis result (first analysis result) of the synchronization signal based on the adjustment information, and is obtained from the corrected analysis result (second analysis result). A shutter drive signal may be output to the shutter unit 240.
In other words, the shutter drive unit 240 generates the first shutter drive signal from the analysis result of the synchronization signal, corrects the first shutter drive signal based on the adjustment information, and generates the second shutter drive signal. Alternatively, the synchronization signal analysis result (first analysis result) may be corrected based on the adjustment information, and the shutter drive signal may be generated from the corrected synchronization signal analysis result (second analysis result).

  In the above embodiment, “R_open”, “R_close”, “L_open”, and “L_close” are used as the synchronization signal, but the synchronization signal to be used is not limited to this. For example, in addition to the above, “R_open & L_close” for simultaneously controlling the opening of the right eye shutter 240R and the closing of the left eye shutter 240R, and “L_open & R_close” for simultaneously controlling the opening of the left eye shutter 240L and the closing of the right eye shutter 240R are used. May be.

  In the above embodiment, as a method for setting adjustment information, a method of setting a range of −50 (minimum value) to +50 (maximum value) in fine steps (for example, pitch 1) has been described. The setting method is not limited to this. For example, a three-stage mode of “brightness priority mode”, “standard mode”, and “image quality priority mode” may be provided.

  Moreover, although the said embodiment demonstrated the example which used the transmissive | pervious liquid crystal panel as a light modulation apparatus, a light modulation apparatus is not limited to a transmissive | pervious liquid crystal panel. For example, the light modulation device may be configured to modulate light from a light source using a digital micro-mirror device (DMD), a reflective liquid crystal panel, or the like. Also, a CRT projector that projects an image on a small CRT (cathode ray tube) onto a projection surface may be used.

  Moreover, in the said embodiment, although the image display apparatuses 10 and 11 were provided with the transmissive | pervious display device (liquid crystal panel), you may provide a self-light-emitting display device (a plasma display panel, an organic electroluminescent panel).

  Note that a program for executing the processing of the 3D glasses 20 (21) according to each embodiment of the present invention is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system, By executing, the processing of the 3D glasses 20 (21) may be realized. Here, the “computer system” may include an OS and hardware such as peripheral devices. Further, the “computer system” includes a homepage providing environment (or display environment) if the WWW system is used. “Computer-readable recording medium” means a flexible disk, a magneto-optical disk, a ROM, a writable non-volatile memory such as a flash memory, a portable medium such as a CD-ROM, a hard disk built in a computer system, etc. This is a storage device.

  Further, the “computer-readable recording medium” refers to a volatile memory (for example, DRAM (Dynamic DRAM) in a computer system that becomes a server or a client when a program is transmitted through a network such as the Internet or a communication line such as a telephone line. Random Access Memory)), etc., which hold programs for a certain period of time. The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to this embodiment, and includes a design and the like within a range not departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1, 2 ... Image display system 10, 11 ... Image display apparatus 20, 21 ... 3D glasses 100, 130 ... Control part 102 ... Image control part 104, 105 ... Light source control part 106 ... Timing control part 108 ... Synchronization signal generation part 110 ... Image display unit 112 ... Liquid crystal panel 114 ... Light source 120, 140 ... Communication unit 122 ... Synchronization signal transmission unit 124 ... Adjustment information reception unit 190 ... Adjustment information storage unit 220, 250 ... Communication unit 222 ... Synchronization signal reception unit 224 ... Adjustment Information transmission unit 230 ... Shutter drive unit 232 ... Signal analysis unit 234 ... Drive signal generation unit 236 ... Timing adjustment unit 240 ... Shutter unit 240L ... Left eye shutter 240R ... Right eye shutter 280 ... Adjustment information reception unit 290 ... Adjustment information storage unit

Claims (6)

A shutter that transmits the left-eye image and the right-eye image constituting the stereoscopic image by driving; and
A synchronization signal receiving unit for receiving a synchronization signal for controlling the driving timing of the shutter unit;
An adjustment information receiving unit that receives input of adjustment information for adjusting the drive timing of the shutter unit;
A shutter driving unit that drives the shutter unit according to the synchronization signal received by the synchronization signal receiving unit and the adjustment information received by the adjustment information receiving unit ;
A shutter device, comprising: an adjustment information transmission unit that transmits the adjustment information. The shutter drive unit
2. The shutter unit is driven according to the corrected drive timing obtained by correcting the drive timing based on the synchronization signal received by the synchronization signal receiving unit based on the adjustment information. Shutter device. The shutter drive unit
Correcting the drive timing based on the synchronization signal without changing the central time of the transmission time of the left-eye image and the right-eye image based on the drive timing based on the synchronization signal received by the synchronization signal receiver. The shutter device according to claim 2, wherein the shutter device is characterized. In an image display system comprising: an image display device that displays a stereoscopic image including a left-eye image and a right-eye image; and a shutter device that is used to view the stereoscopic image;
The shutter device is
A shutter that transmits the left-eye image and the right-eye image constituting the stereoscopic image by driving; and
A synchronization signal receiving unit for receiving a synchronization signal for controlling the driving timing of the shutter unit;
An adjustment information receiving unit that receives input of adjustment information for adjusting the drive timing of the shutter unit;
A shutter driving unit that drives the shutter unit according to the synchronization signal received by the synchronization signal receiving unit and the adjustment information received by the adjustment information receiving unit;
An adjustment information transmitting unit for transmitting the adjustment information;
The image display device includes:
An image display unit for displaying the stereoscopic image;
A synchronization signal generator for generating the synchronization signal to be transmitted to the shutter device;
An adjustment information receiving unit for acquiring the adjustment information transmitted from the shutter device;
An image display system comprising: a light source control unit that controls a light source of the image display unit according to the display timing of the stereoscopic image and the adjustment information received by the adjustment information receiving unit. The adjustment information receiving unit
Receiving the adjustment information of each of the plurality of shutter devices;
The light source controller is
5. The image according to claim 4 , wherein the light source is controlled according to the display timing and the adjustment information that adjusts a transmission time of a left-eye image and a right-eye image to a maximum among the adjustment information. Display system. A timing adjustment method in a shutter device including a shutter unit that transmits a left-eye image and a right-eye image constituting a stereoscopic image by driving,
A synchronization signal receiver of the shutter device receives a synchronization signal for controlling the drive timing of the shutter;
The adjustment information receiving unit of the shutter device receives input of adjustment information for adjusting the driving timing of the shutter unit,
The shutter driving unit of the shutter device drives the shutter unit according to the synchronization signal and the adjustment information received by the synchronization signal receiving unit,
A timing adjustment method in the shutter device, wherein the adjustment information transmission unit of the shutter device transmits the adjustment information.

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