| 摘要 |
A communication apparatus for a remote control apparatus, for example, in order to lock or unlock doors or a trunk of a vehicle selects a radio signal or optical signal in accordance with the conditions between the transmitter and receiver. Its transmitter is provided with a radio signal sending circuit, an optical signal sending circuit and a selection circuit which selects any one circuit for operation and a receiver which is provided with a radio signal receiving circuit which receives a radio signal transmitted from said radio signal sending circuit and an optical signal receiving circuit which receives an optical signal transmitted from said optical signal sending circuit. |
