Patent ID: 8675056
Filing Date: 2014-03-18
Classification: G02B,H04N

Abstract:
1. Stereographic glasses comprising: a wireless-signal receiving section for receiving synchronous signals for switching between a right-eye image and a left-eye image to be displayed on a display device and at least one piece of liquid crystal shutter control data each indicative of whether an image to be displayed is the right-eye image or the left-eye image; a timing generation section for generating, based on the synchronous signals thus received, timings for controlling opening and closing of respective liquid crystal shutters for a right lens and a left lens; a liquid crystal shutter control section for opening and closing the respective liquid crystal shutters at the timings thus generated by the timing generation section; liquid-crystal-shutter-equipped left and right lenses for which the respective liquid crystal shutters are provided; and reception-stop timing control means, which includes: a cycle detection section for detecting a cycle of the synchronous signals thus received, from a time interval between the synchronous signals; a cycle signal generation section for repeatedly generating, based on the cycle thus detected, cycle signals with the same cycle as the cycle thus detected; a memory section in which to store the at least one piece of liquid crystal shutter control data thus received by the wireless-signal receiving section; and a liquid crystal shutter control data generation section for repeatedly outputting the at least one piece of liquid crystal shutter control data thus stored in the memory section, at timings in sync with the cycle signals thus generated by the cycle signal generation section, the reception-stop timing control means (i) causing the wireless-signal receiving section to stop receiving signals, after the cycle detection section detects the cycle of the synchronous signals and the memory section stores therein the at least one piece of liquid crystal shutter control data, (ii) causing the timing generation section to generate the timings for controlling opening and closing of the respective liquid crystal shutters, based on the cycle signals generated from the cycle signal generation section and the at least one piece of liquid crystal shutter control data thus stored in the memory section, and (iii) causing the liquid crystal shutter control section to open and close the respective liquid crystal shutters at the timings thus generated, wherein the reception-stop timing control means further includes: a cycle counter register in which to store the number of cycles signals corresponding to time during which the wireless-signal receiving section is caused to stop receiving signals; a cycle-signal counter section for counting the number of cycle signals generated by the cycle signal generation section from when the cycle of the synchronous signals has been detected, to when the number of cycle signals thus counted reaches the number of cycle signals stored in the cycle counter register; and a cyclic-intermittence control section for causing the wireless-signal receiving section to stop receiving signals while the cycle-signal counter section is counting the number of cycle signals, and for causing the wireless-signal receiving section to start receiving signals when the cycle-signal counter section finishes counting the number of cycle signals.