| 摘要 |
PURPOSE:To provide optical reception equipment in which malfunction due to interference light can be prevented from occurring in a remote controller. CONSTITUTION:This controller is equipped with a pair of optical signal detection circuits composed so that conversion elements 6a, 6b which convert light to an electrical signal are connected to photodetectors 5a, 5b with sensitivity for the light of different wavelength, and a transmission signal can be obtained from the output of the elements via band-pass circuits 7a, 7b and detection circuits 8a, 8b. Also, the optical reception equipment provided with an arithmetic processing circuit 9 to which an obtained transmission signal is inputted and which computes (subtracts) and outputs it is used as the remote control optical receiving part of electronic equipment. |
