| 摘要 |
PURPOSE: To prevent malfunction of another remote control equipment by making the infrared light modulation frequency for the control of stereoscopic vision glass devices different from the infared light modulation frequency for the control of another remote control equipment and lowering also an infrared light level. CONSTITUTION: The modulation frequency of infrared light for remote control devices of a TV, a VTR and an airconditioner, etc., to be used at one's home is 33 to 40kHz. The modulation frequency of the infrared light of the remote control device for operation control of a stereoscopic picture device main body is set to 38kHz and this signal light is received by a remote control reception circuit 2 and is controlled. For the control of the shutter of a stereoscopic vision glass device, a pair of the synchronizing pulse and the pulse for the left eye and a pair of the synchronizing pulse and the pulse for the right eye which are modulated at 58kHz, for instance, are alternately transmitted at 120kHz by a shutter switch signal transmission circuit 4. Thus, because the modulation frequency is changed and an infrared light output level is made about half the level of the main body control, there is few possibility that the remote control devices of the other equipments to be used at one's home are affected. |
