WO2011155181A1

WO2011155181A1 - Liquid crystal shutter eye glasses and driving device for the same

Info

Publication number: WO2011155181A1
Application number: PCT/JP2011/003200
Authority: WO
Inventors: 俊宏岡田
Original assignee: パナソニック株式会社
Priority date: 2010-06-07
Filing date: 2011-06-07
Publication date: 2011-12-15
Also published as: JP2013168693A

Abstract

Disclosed are liquid crystal shutter eye glasses and a driving device for the same which, in order to broaden the transmission range of the synchronization signal that drives the liquid crystal shutters, are capable of synchronizing the operation of the liquid crystal shutters between liquid crystal shutter eye glasses. The disclosed driving device of the liquid crystal shutter eye glasses is provided with a signal-receiving unit for receiving a first synchronization signal indicating the timing for switching between the right eye image and the left eye image, a liquid crystal shutter control unit for driving the shutters of the left and right of the liquid crystal shutter eye glasses on the basis of the received first synchronization signal, a transmission signal generation unit for generating a second synchronization signal indicating the timing for switching between the right eye image and the left eye image on the basis of the received first synchronization signal, and a transmission unit for transmitting the second synchronization signal generated by the transmission signal generation unit.

Description

Liquid crystal shutter glasses and driving device thereof

The present invention relates to liquid crystal shutter glasses used for viewing a display image by a stereoscopic image display device as a stereoscopic image and its driving device, and more particularly to a synchronization signal for opening and closing the liquid crystal shutter.

As a conventional method for viewing stereoscopic images, there is a method in which a viewer wears special glasses and views stereoscopic images projected by a stereoscopic image display device such as a television. In such a glasses-type viewing method, a parallax image, for example, a right-eye image (R) and a left-eye image (L) are alternately displayed on a video display device such as a television for each field (or frame). Is output. When the viewer wears special glasses, the right-eye video (R) enters the right eye and the left-eye video (L) enters the left eye. It is a mechanism that allows you to watch videos.

As an example of special glasses, a right-eye image (R) and a left-eye image are provided by providing a liquid crystal shutter and a polarizing plate on the left and right eye lenses, and alternately transmitting or not transmitting the left and right liquid crystal shutters. There is a technique for making (L) visible to each eye.

Also, as disclosed in Patent Document 1, there is a technique for causing the liquid crystal shutter glasses to detect the switching of the left and right images using a spatial transmission signal transmitter such as infrared rays from the side of a stereoscopic image display device such as a television.

JP-A 64-67095

In the conventional configuration, a synchronization signal for synchronizing left and right video switching and liquid crystal shutter switching is transmitted from one signal source (for example, a transmission device attached to a video display device). However, when a plurality of liquid crystal shutter glasses are used at the same time in order for a plurality of people to view a video at the same time, it may be difficult to receive a signal from a signal source depending on the viewing location. A specific viewer who cannot receive the synchronization signal views the right-eye video (R) and the left-eye video (L) with parallax simultaneously because the liquid crystal shutter is not driven, and cannot view the stereoscopic video.

The present invention solves the above-described problem, and in order to widen the transmission range of a synchronization signal for driving the liquid crystal shutter, the liquid crystal shutter glasses capable of synchronizing the operation of the liquid crystal shutter with each other and the driving device thereof The purpose is to provide.

The present invention relates to a driving device for liquid crystal shutter glasses used for stereoscopic viewing of right-eye images and left-eye images displayed alternately on a stereoscopic video display device. The driving device for liquid crystal shutter glasses according to the present invention includes a receiving unit that receives a first synchronization signal indicating a switching timing of an image for the right eye and an image for the left eye, and a liquid crystal based on the received first synchronization signal. A liquid crystal shutter control unit that drives the left and right shutters of the shutter glasses, and a transmission signal that generates a second synchronization signal indicating the switching timing of the right-eye image and the left-eye image based on the received first synchronization signal. A generation unit; and a transmission unit that transmits the second synchronization signal generated by the transmission signal generation unit.

Alternatively, the driving device for the liquid crystal shutter glasses indicates the switching timing between the right-eye image and the left-eye image, and receives the first synchronization signal whose transmission timing and transmission time are determined in advance, and the received synchronization A discriminating unit for discriminating the transmission timing and transmission time of the signal, a liquid crystal shutter control unit for driving the left and right shutters of the liquid crystal shutter glasses based on the received first synchronization signal and the discrimination result by the discriminating unit; Based on the first synchronization signal and the determination result by the determination unit, a transmission signal generation unit that generates a second synchronization signal indicating the switching timing of the right-eye image and the left-eye image, and a transmission signal generation unit And a transmitter that transmits the second synchronization signal.

The liquid crystal shutter glasses according to the present invention are used for stereoscopically viewing right-eye images and left-eye images that are alternately displayed on a stereoscopic video display device, and are a pair of right-eye and left-eye images. Liquid crystal shutter and any one of the driving devices described above.

According to the liquid crystal shutter glasses and the driving device thereof according to the present invention, since the second synchronization signal generated based on the received first synchronization signal can be transmitted, the synchronization signal necessary for switching the liquid crystal shutter can be received. It is possible to expand the range and reduce reception problems depending on the viewing location.

FIG. 1 is a schematic configuration diagram of a stereoscopic video display system using liquid crystal shutter glasses according to the present invention. FIG. 2 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the first embodiment. FIG. 3 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the second embodiment. FIG. 4 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the third embodiment. FIG. 5 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the fourth embodiment. FIG. 6 is a perspective view illustrating a schematic configuration of the relay device according to the fifth embodiment. FIG. 7 is a block diagram showing the main configuration of the relay apparatus according to the fifth embodiment.

FIG. 1 is a schematic configuration diagram of a stereoscopic video display system using liquid crystal shutter glasses according to the present invention.

A stereoscopic video reproduction system 500 shown in FIG. 1 includes a video display device 505 and liquid crystal shutter glasses 100. The video display device 505 alternately displays the right-eye video (R) and the left-eye video (L) for each field (or frame). The video display device 505 includes a transmission device 506, and outputs a transmission signal for controlling the switching timing of the right-eye image (R) and the left-eye image (L) from the transmission unit 507 of the transmission device 506. This transmission signal is a code signal composed of a code for identifying the control signal for switching the shutter and a code for identifying the right eye and the left eye, and the carrier wave is modulated by the code signal. For example, infrared rays can be used as the carrier wave.

The liquid crystal shutter glasses 100 make the left and right

liquid crystal shutters

106L and 106R alternately transmissive or non-transmissive in synchronization with the switching of the right eye video (R) and the left eye video (L) by the video display device 505. Thus, the right-eye video (R) is guided to the viewer's right eye, and the left-eye video (L) is guided to the viewer's left eye. The liquid crystal shutter glasses include

liquid crystal shutters

106L and 106R provided to be overlapped on the left and right lenses, and a reception unit 101 that receives a transmission signal for controlling the switching timing of the

liquid crystal shutters

106L and 106R. Based on this, the transmission / non-transmission of the liquid crystal shutter 106L for the left eye and the liquid crystal shutter 106R for the right eye is switched.

As described above, since it is necessary to synchronize the switching of the video by the video display device 505 and the switching of the

liquid crystal shutters

106R and 106L by the liquid crystal shutter glasses 100, the liquid crystal shutter glasses 100 directly receive the signal from the transmission device 506. It is assumed that it can be done. However, when a plurality of people use a plurality of liquid crystal shutter glasses 100 at the same time and view a stereoscopic image on the video display device 505, for example, another viewer becomes an obstacle and spatial transmission from the transmission device 506 is performed. The signal may not be received.

Therefore, in the present invention, the transmission shutter signal generator 100 generates a control signal indicating the switching timing of the right-eye image (R) and the left-eye image (L) based on the received transmission signal. And a signal transmission unit 104 that outputs the generated transmission signal. As a result, the transmission range of the synchronization signal is expanded.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the following description, a signal used to synchronize the video switching timing of the stereoscopic video display device 505 and the switching timing of the

liquid crystal shutters

106L and 106R is referred to as a “synchronization signal”.

(Embodiment 1)
FIG. 2 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the first embodiment.

The liquid crystal shutter glasses 100 include a receiving unit 101 that receives a transmission signal, a decoder unit 102 that decodes the received signal, a liquid crystal shutter control unit 105 that controls a liquid crystal shutter from the decoded signal,

liquid crystal shutters

106L and 106R, In order to transfer the transmission signal received by the reception unit 101 to other liquid crystal shutter glasses, the transmission signal generation unit 103 that generates a transmission signal indicating the liquid crystal shutter switching timing, and the transmission signal generated by the transmission signal generation unit 103 A signal transmission unit 104 for transmission is provided.

The transmission device 506 transmits a transmission signal for controlling the switching timing of the right-eye image (R) and the left-eye image (L).

The receiving unit 101 receives a transmission signal sent from the transmission device 506. The decoder unit 102 decodes the transmission signal received by the receiving unit 101 and sends a synchronization signal obtained by the decoding to the liquid crystal shutter control unit 105. The liquid crystal shutter control unit 105 alternately switches between transmission and non-transmission of the

liquid crystal shutters

106L and 106R based on the synchronization signal received from the decoder unit 102.

The receiving unit 101 further outputs the received transmission signal to the transmission signal generating unit 103. The transmission signal generation unit 103 controls the signal transmission unit 104 so as to output the same signal based on the received transmission signal. The signal transmission unit 104 transmits a coded signal similar to the signal received by the reception unit 101 using infrared rays or the like. Note that the signal to be transmitted may be the same signal as the received signal. The signal transmission unit 104 can be provided, for example, in a temple unit (see FIG. 1) of the liquid crystal shutter glasses 100. In this case, a transmission signal for driving the liquid crystal shutters can be transmitted in the left-right direction of the liquid crystal shutter glasses 100.

The transmission signal generation unit 103 and the transmission device 104 may output the transmission signal received from the reception unit 101 as a transmission signal as it is, or may output the transmission signal by changing the timing of the transmission signal. For example, when a transmission signal that has not been decoded is input to the transmission signal generation unit 103 as in the first embodiment, a signal similar to the transmission signal may be output. On the other hand, as in the embodiment described later, the decoded synchronization signal may be encoded to reproduce the transmission signal and transmit it as a transmission signal.

Explain the timing change of transmission signal. When a predetermined time Δt is required from when a certain liquid crystal shutter glasses receive the transmission signal to when the transmission signal is output from the signal transmission unit 104, other liquid crystal shutter glasses that have received the transmission signal output from the signal transmission unit 104 Receives the transmission signal with a delay of Δt. That is, in other liquid crystal shutter glasses, the opening and closing of the liquid crystal shutter is delayed by the time Δt, and there is a possibility that synchronization with the video display device cannot be achieved.

Therefore, the transmission signal generation unit 103 of the liquid crystal shutter glasses 110 needs to control the output timing of the transmission signal from the signal transmission unit 104 in consideration of this time Δt. Specifically, the signal transmission unit 104 is driven with a delay of [2 frame (field) period−Δt] from the video switching timing of the transmission signal received by the reception unit 101. Here, the significance of delaying by [2 frame (field) period−Δt] is that the periodicity of the stereoscopic video is used. That is, since the right (left) eye image is displayed every 2 frames (fields), the stereoscopic image is delayed by 2 frames and Δt, so that the other timing is the same as the timing received by the liquid crystal shutter glasses 110. The transmission signal can be received by the liquid crystal shutter glasses. Accordingly, the delay time Δt in the liquid crystal shutter glasses 100 can be absorbed, and the video switching timing of the synchronization signal received by the receiving unit 101 can be matched with the video switching timing of the synchronization signal output by the signal transmission unit 104. .

Alternatively, when other liquid crystal shutter glasses assume that the time Δt is known in advance, the transmission signal generation unit 103 may generate a transmission signal without considering the delay time until signal transmission. In this case, the other liquid crystal shutter glasses that have received the transmission signal from the signal transmission unit 104 decode [2 frames (field) from the video switching timing of the synchronization signal obtained by decoding the transmission signal transmitted from the signal transmission unit 104. The liquid crystal shutter may be driven at a timing delayed by the period −Δt].

Thus, by providing the liquid crystal shutter glasses 100 with the signal transmission unit 104 equivalent to the transmission device 110, it is possible to transmit a transmission signal to other liquid crystal shutter glasses, and to widen the reception range of the transmission signal. . Therefore, according to the liquid crystal shutter glasses according to the present invention, even when a certain liquid crystal shutter glasses cannot receive a transmission signal from a specific transmission signal transmission device (for example, the transmission device 506 of the video display device), another transmission signal transmission device. Since it can be received from (for example, other liquid crystal shutter glasses), it is possible to reduce reception problems depending on the viewing location.

(Embodiment 2)
FIG. 3 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the second embodiment. In FIG. 3, the same components as those described in FIGS. 1 and 2 are denoted by the same reference numerals, and repeated description is omitted.

The liquid crystal shutter glasses 200 shown in FIG. 3 generate a timing signal for generating a synchronization signal for switching the

liquid crystal shutters

106L and 106R at the timing stored in the timing storage unit 207 and the timing storage unit 207 stored in advance. And a unit 208.

The receiving unit 101 receives a transmission signal sent from the transmission device 110. The decoder unit 102 decodes the transmission signal received by the receiving unit 101 and sends a synchronization signal obtained by the decoding to the liquid crystal shutter control unit 105. The liquid crystal shutter control unit 105 alternately switches between transmission and non-transmission of the

liquid crystal shutters

106L and 106R for the left and right eyes based on the synchronization signal received from the decoder unit 102.

Also, the timing storage unit 207 detects the left and right video switching cycle from the synchronization signal output from the decoder unit 102, and stores the detected video switching cycle and switching timing. As an example of the switching timing and cycle detection method, a detection method using a shift register will be described. First, the clock cycle for operating the liquid crystal shutter glasses 200 is set to be eight times as fast as the video switching. In this way, 16 stages (states) from the first stage to the eighth stage for the left eye and from the first stage to the eighth stage for the right eye can be considered as the video switching stage. Specifically, the shift register registers the current state at the video switching stage. For identifying the right eye image and the left eye image in the shift register, for example, a negative sign is given to the right eye image, and a positive sign is given to the left eye image. In this way, each state advances to the next state at the clock cycle of the driving device, and when the sign is switched, the opening / closing of the shutter is switched. Then, since the state stores the switching timing of the right eye image and the left eye image, the next image switching timing can be detected from the current state even if the signal cannot be received.

The timing signal generation unit 208 generates a switching signal for driving the liquid crystal shutter based on the video switching period stored in the timing storage unit 207 when the reception unit 101 detects that the transmission signal is not received. And output to the liquid crystal shutter controller 105. The liquid crystal shutter control unit 105 alternately switches between transmission and non-transmission of the left and right

liquid crystal shutters

106L and 106R based on the signal output from the timing signal generation unit 208.

Further, when the reception unit 101 detects that the transmission signal is not received, the reception unit 101 pauses the operations of the transmission signal control unit 103 and the signal transmission unit 104. Thereby, the power consumption of the liquid crystal shutter glasses 200 can be suppressed.

According to the configuration of the present embodiment, by providing the timing storage unit 207 and the timing signal generation unit 208, even when reception of the transmission signal by the liquid crystal shutter glasses 200 is interrupted, the liquid crystal shutter switching operation is continued. Can be performed. Further, when the liquid crystal shutter glasses 200 are not receiving a transmission signal, it is possible to suppress power consumption by stopping the operations of the transmission signal control unit 103 and the signal transmission unit 104.

(Embodiment 3)
FIG. 4 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the third embodiment. 3, the same components as those described in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof is omitted.

The liquid crystal shutter glasses 300 shown in FIG. 4 further include a signal source determination unit 309 that specifies a transmission signal generation source.

The

transmission devices

506a and 506b transmit different transmission signals. The

transmission devices

506a and 506b may be, for example, a video display device and liquid crystal shutter glasses, or may be two different liquid crystal shutter glasses. The synchronization signals output from the

transmission apparatuses

506a and 506b differ in the identification code or the signal transmission start time (time). For example, a code A is inserted into the transmission signal sent from the transmission apparatus 506a, and a code B is inserted into the transmission signal sent from the transmission apparatus 506b. Hereinafter, the transmission signal output from the transmission device 506a is referred to as "transmission signal A", the transmission signal output from the transmission device 506b is referred to as "transmission signal B", and the left and right video period (liquid crystal shutter switching interval) is referred to as Ts. When signals are transmitted using infrared rays, the difference between the signal transmission times of the transmission signal A and the transmission signal B is set to Ts / 2 or less. For example, the transmission signals A and B can be made different by matching the transmission start of the transmission signal A with the video switching timing and matching the transmission start of the transmission signal B with [video switching timing + Ts / 2]. Further, when using radio, the synchronization signals A and B can be made different by changing the phase of the transmission signal, for example. By making the transmission signals A and B distinguishable in this way, the switching of the liquid crystal shutter can be synchronized with the video switching of the video display device if any one of the transmission signals can be received.

The receiving unit 101 receives the transmission signals A and B. The decoder unit 102 decodes the transmission signal received by the receiving unit 101 and outputs a synchronization signal obtained by the decoding to the signal source determination unit 309. The signal source determination unit 309 specifies a signal source based on identification information such as a code inserted in the synchronization signal. The transmission start time and transmission time of the synchronization signal are predetermined for each signal source, or are inserted into the synchronization signal. Then, the signal source determination unit 309 calculates the video switching timing from the identified signal source and the synchronization signal obtained by decoding, and outputs a signal indicating the calculated video switching timing to the liquid crystal shutter control unit 105. The liquid crystal shutter control unit 105 alternately switches between transmission and non-transmission of the left and right

liquid crystal shutters

106L and 106R based on the signal output from the signal source determination unit 309.

Further, the signal source determination unit 309 outputs a signal indicating the video switching timing calculated from the identified signal source and the synchronization signal obtained by decoding, to the transmission signal control unit 103. The transmission signal control unit 103 drives the signal transmission unit 104 based on the signal output from the signal source determination unit 309 and causes the signal transmission unit 104 to output a synchronization signal indicating video switching timing. The signal transmission unit 104 transmits a coded signal using infrared rays or the like.

According to the configuration of this embodiment, since the signal source determination unit 309 can identify a plurality of synchronization signals, even when the liquid crystal shutter glasses 300 receive a plurality of transmission signals at the same time, Based on this, the liquid crystal shutter timing and the video switching timing can be synchronized.

(Embodiment 4)
FIG. 5 is a block diagram showing a main configuration of the liquid crystal shutter glasses according to the fourth embodiment. 4, the same components as those in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof is omitted.

In addition to the configuration of the liquid crystal shutter glasses 300 according to Embodiment 3, the liquid crystal shutter glasses 400 shown in FIG. 5 include a timing storage unit 207 that stores the switching timing of the liquid crystal shutters, and the liquid crystal shutters at the timing stored in the timing storage unit 207. And a timing signal generator 208 for generating a shutter switching timing signal. The timing storage unit 207 and the timing signal generation unit 208 are the same as those described in the second embodiment.

As described above, the timing storage unit 207 detects the switching period of the left and right images from the synchronization signal output from the decoder unit 102, and stores the detected switching period of the images. When the timing signal generation unit 208 detects that the reception unit 101 has not received the synchronization signal, the timing signal generation unit 208 switches the switching signal for driving the liquid crystal shutter based on the video switching period stored in the timing storage unit 207. Is output to the liquid crystal shutter control unit 105. The liquid crystal shutter control unit 105 alternately switches between transmission and non-transmission of the left and right liquid

crystal shutter units

Further, when the receiving unit 101 detects that the synchronization signal is not received, the operations of the transmission signal control unit 103 and the signal transmission unit 104 are suspended. Thereby, the power consumption of the liquid crystal shutter glasses 400 can be suppressed.

According to the configuration according to the present embodiment, by providing the timing storage unit 207 and the timing signal generation unit 208, even when the reception of the synchronization signal by the liquid crystal shutter glasses 200 is interrupted, the liquid crystal shutter switching operation is continued. Can be performed. Further, when the liquid crystal shutter glasses 200 do not receive the synchronization signal, the power consumption can be suppressed by stopping the operations of the transmission signal control unit 103 and the signal transmission unit 104.

(Embodiment 5)
FIG. 6 is a perspective view illustrating a schematic configuration of the relay device according to the fifth embodiment.

In each of the above embodiments, the liquid crystal shutter glasses have a synchronization signal transmission function. However, the relay device 500 according to the present embodiment does not include a liquid crystal shutter and only has a function of retransmitting the received synchronization signal. In other words, the liquid crystal shutter has a function of a liquid crystal shutter glasses driving device. The relay device 500 includes, for example, a rotator 501 including the receiving unit 101 and a rotator 502 including the signal transmitting unit 104. The rotating

bodies

501 and 502 are rotatable with respect to each other about an axis indicated by a one-dot chain line. Therefore, the transmission range of the transmission signal by the signal transmission unit 104 can be freely changed with respect to the reception range of the transmission signal by the reception unit 101 by changing the rotation angle of the

rotators

501 and 502. As a result, the propagation range of the synchronization signal can be flexibly adjusted in accordance with the installation location and the usage situation.

FIG. 7 is a block diagram showing a main configuration of the relay apparatus according to the fifth embodiment.

The relay device 500 generates a transmission signal indicating the liquid crystal shutter switching timing based on the reception unit 101 that receives the transmission signal, the decoder unit 102 that decodes the received transmission signal, and the synchronization signal decoded by the decoder unit. A transmission signal generation unit 103 and a signal transmission unit 104 that transmits the transmission signal generated by the transmission signal generation unit 103 are provided. Since each of these functional blocks is the same as that described in the first embodiment, repeated description is omitted.

In the present embodiment, the relay apparatus having the configuration in which the liquid crystal shutter control unit 105 and the

liquid crystal shutters

106L and 106R are removed from the liquid crystal shutter glasses 100 according to the first embodiment is shown, but the liquid crystal according to the second to fourth embodiments is shown. The relay device 500 corresponding to the shutter glasses 200 to 400 can also be configured. Specifically, the liquid crystal shutter controller 105 and the

liquid crystal shutters

106L and 106R may be similarly removed from the functional blocks of the liquid crystal shutter glasses 200 to 400 according to Embodiments 2 to 4.

In addition, in the example of FIG. 1, although the signal transmission part is provided in the temple part of liquid crystal shutter spectacles, you may provide a signal transmission part in other places, such as a spectacles frame.

In addition, when the liquid crystal shutter glasses 100 to 400 according to the first to fourth embodiments are not used, only the liquid crystal shutter drive may be stopped to perform the synchronization signal relay function.

Furthermore, the functional blocks of Embodiments 1 to 4 except the liquid crystal shutter may be configured as a driving device for liquid crystal shutter glasses.

The present invention relates to a stereoscopic video image comprising a stereoscopic video display device that alternately displays a right-eye video image and a left-eye video image, and liquid crystal shutter glasses that drive left and right liquid crystal shutters in synchronization with video switching of the stereoscopic video display device. Available for viewing system.

100, 200, 300, 400 Liquid crystal shutter glasses 101 Reception unit 102 Decoder unit 103 Transmission signal generation unit 104 Signal transmission unit 105 Liquid crystal shutter control unit 106 Liquid crystal shutter 207 Timing storage unit 208 Timing signal generation unit 309 Signal source determination unit 500 Relay device 505 stereoscopic image display device

Claims

A driving device for liquid crystal shutter glasses used for stereoscopic viewing of right-eye images and left-eye images displayed alternately on a stereoscopic video display device,
A receiving unit that receives a first synchronization signal indicating a switching timing of the right-eye image and the left-eye image;
A transmission signal generation unit that generates a second synchronization signal indicating a switching timing of the right-eye image and the left-eye image based on the received first synchronization signal;
A driving device for liquid crystal shutter glasses, comprising: a transmission unit that transmits the second synchronization signal generated by the transmission signal generation unit.
A timing storage unit that holds the switching timing of the image for the right eye and the image for the left eye, acquired from the received first synchronization signal;
A timing signal generation unit that generates a timing signal indicating the switching timing of the right-eye image and the left-eye image based on the switching timing held in the timing storage unit;
When it is determined that the reception unit has not received the first synchronization signal, the liquid crystal shutter control unit replaces the first synchronization signal with the timing generated by the timing signal generation unit. A transmission signal generation unit that generates a second synchronization signal indicating switching timing of the right-eye image and the left-eye image based on a signal;
The driving device for liquid crystal shutter glasses according to claim 1.
Liquid crystal shutter glasses used for stereoscopic viewing of right-eye images and left-eye images displayed alternately on a stereoscopic video display device,
A receiving unit that receives a first synchronization signal indicating a switching timing of the right-eye image and the left-eye image;
A liquid crystal shutter controller that drives left and right shutters of the liquid crystal shutter glasses based on the received first synchronization signal;
A transmission signal generation unit that generates a second synchronization signal indicating a switching timing of the right-eye image and the left-eye image based on the received first synchronization signal;
Liquid crystal shutter glasses, comprising: a transmission unit that transmits the second synchronization signal generated by the transmission signal generation unit.
A timing storage unit that holds the switching timing of the image for the right eye and the image for the left eye, acquired from the received first synchronization signal;
A timing signal generation unit that generates a timing signal indicating the switching timing of the right-eye image and the left-eye image based on the switching timing held in the timing storage unit;
When it is determined that the reception unit has not received the first synchronization signal, the liquid crystal shutter control unit replaces the first synchronization signal with the timing generated by the timing signal generation unit. The liquid crystal shutter glasses according to claim 3, wherein the liquid crystal shutter glasses are driven and controlled based on a signal.
5. The liquid crystal shutter glasses according to claim 4, wherein when the receiving unit determines that the first synchronization signal has not been received, the operation of the transmission signal generating unit and the transmitting unit is stopped.
A driving device for liquid crystal shutter glasses used for stereoscopic viewing of right-eye images and left-eye images displayed alternately on a stereoscopic video display device,
A receiving unit that receives a first synchronization signal indicating a switching timing of the right-eye image and the left-eye image;
A discriminator for discriminating the transmission timing and transmission time of the received synchronization signal;
A transmission signal generation unit that generates a second synchronization signal indicating a switching timing of the right-eye image and the left-eye image based on the received first synchronization signal and the determination result by the determination unit;
A driving device for liquid crystal shutter glasses, comprising: a transmission unit that transmits the second synchronization signal generated by the transmission signal generation unit.
A timing data acquisition unit that acquires timing data for specifying the switching timing of the right-eye image and the left-eye image based on the received first synchronization signal and the determination result by the determination unit;
A storage unit for storing the timing data acquired by the timing data acquisition unit;
A timing signal generation unit that generates a timing signal indicating a switching timing of the right-eye image and the left-eye image based on timing data stored in the storage unit;
When it is determined that the reception unit has not received the first synchronization signal, the liquid crystal shutter control unit is based on the timing signal generated by the timing signal generation unit instead of the synchronization signal. A transmission signal generation unit that generates a second synchronization signal indicating a switching timing of the right-eye image and the left-eye image,
The driving device for liquid crystal shutter glasses according to claim 6.
Liquid crystal shutter glasses used for stereoscopic viewing of right-eye images and left-eye images displayed alternately on a stereoscopic video display device,
A receiving unit that receives a first synchronization signal indicating a switching timing of the right-eye image and the left-eye image;
A discriminator for discriminating the transmission timing and transmission time of the received synchronization signal;
A liquid crystal shutter controller for driving left and right shutters of the liquid crystal shutter glasses based on the received first synchronization signal and the identification result by the identification unit;
A transmission signal generation unit that generates a second synchronization signal indicating a switching timing of the right-eye image and the left-eye image based on the received first synchronization signal and the determination result by the determination unit;
Liquid crystal shutter glasses, comprising: a transmission unit that transmits the second synchronization signal generated by the transmission signal generation unit.
A timing data acquisition unit that acquires timing data for specifying the switching timing of the right-eye image and the left-eye image based on the received first synchronization signal and the determination result by the determination unit;
A storage unit for storing the timing data acquired by the timing data acquisition unit;
A timing signal generation unit that generates a timing signal indicating a switching timing of the right-eye image and the left-eye image based on timing data stored in the storage unit;
When it is determined that the reception unit has not received the first synchronization signal, the liquid crystal shutter control unit is based on the timing signal generated by the timing signal generation unit instead of the synchronization signal. The liquid crystal shutter glasses according to claim 8, wherein the liquid crystal shutter glasses are driven and controlled.
10. The liquid crystal shutter glasses according to claim 9, wherein when the reception unit determines that the first synchronization signal is not received, the operation of the transmission signal generation unit and the transmission unit is stopped.