Cordless loud speaking telephone

Details Cordless loud speaking telephone Cordless loud speaking telephone

H - Electricity

04

M

379/11

H04M 1/00 (2006.01) H04M 1/60 (2006.01) H04M 1/62 (2006.01) H04M 1/725 (2006.01)

Patent

CA 2027586

A cordless loud-speaking telephone of the present invention is shaped to be placed on a table or desk or to be suspended from a ceiling. Unlike cordless portable telephones of the handy transceiver type, it enables hands-free talking or communication through a receiving speaker and a transmitting microphone located outside a casing. An antenna conductor and counterpoises are projected from the casing, and a microphone is attached to the counterpoises or the antenna conductor such that the microphone is separated as remotely as possible from the speaker in the casing. As a result, howling and echo which disturb talking or communication via the telephone can be suppressed. Further, plural microphones are attached to plural antenna conductors or counterpoises to cancel the sound of the receiving speaker to prevent the voice from again entering the microphones, or the microphones are attached to the counterpoises or the antenna conductors in such a manner that they effectively receive the voice from the mouth of a talking person from a certain direction. This enables hands-free talking or communication to be more effectively and reliably achieved.

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