PURPOSE: To reduce an automatic dialing device in size and to facilitate operation by making an optical coupling connection between an automatic dialing operation part and the automatic dialing device.
CONSTITUTION: A light emitting element 11 is situated on the bottom surface of recessed part 5 of a housing 2 to convert electric signals of operation keys 7 and dial keys 6 into optical signals. Keyboards 91∼93 when inserting into the recessed part 5 are equipped with a photodetecting element 12 opposite to the element 11, and photodetects and converts the optical signal of the element 11 into an electric signal. A light emitting element 14 is situated on the reverse surfaces of the keyboards 91∼93 to convert the electric signal of a telephone number transmitted by the operation of an automatic dialing transmission key 10 into an optical signal, which is projected on a photodetecting element 13 at the facing recessed part 5 and converted into an electric signal. Thus, the automatic dialing device body 1 is connected to the keyboards 91∼93 by the transmission and reception of the optical signal between light emitting elements and photodetecting elements in pairs, so there is no defective contacting, the device 1 is reduced in size, and the keyboards 91∼93 are handled easily.
IITAKA EIJI
YAMAUCHI MASAAKI
SUZUKI KATSUO
