| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an improper operation of a light emitting device which is lighted for controlling a shutter operation, in a configuration which enables a viewer to visually recognize a stereoscopic image by displaying a parallax image containing a left-eye image and a right-eye image using an active shutter type device. <P>SOLUTION: An FPGA 104, connected to an emitter 111 equipped with an infrared LED 115 which transmits a synchronization signal to a stereoscopic vision device 2 of an active shutter type, comprises: an emitter driver circuit 133 which outputs an emitter driving signal S16 for controlling a light emission time of the infrared LED 115 according to an input emitter control signal S15 which shows a display timing; and an emitter mask circuit 140 which masks an output of the emitter driving signal S16, when a value of the emitter control signal S15 deviates from a preset condition. <P>COPYRIGHT: (C)2013,JPO&INPIT |
