Automatic sensitivity switching circuit for a cordless telephone

Details Automatic sensitivity switching circuit for a cordless telephone Automatic sensitivity switching circuit for a cordless telephone

1984-07-18

1986-06-17

Rubinson, Gene Z.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

179 2BC, 455 73, 455 89, 455127, H04M 102

Patent

active

045957959

ABSTRACT:
An automatically switching circuit for the receiving sensitivity in a cordless telephone comprises a base unit and a portable handset in wireless communication with the base unit, which is responsive to the flow of charging current from the base unit to the portable handset for reducing the gain of an antenna or amplifying stage to a desired low level, thereby preventing erroneous ringing due to surrounding noise signals or disturbances while the portable handset rests on the base unit.

REFERENCES:
patent: 4511761 (1985-04-01), Yamazaki et al.

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