Radio telephone system control method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5140628
SERIAL NO

07443334

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a method and apparatus for controlling a radio telephone system, a speech channel is established between the slave radio set of a plurality of radio telephone sets and a radio set of a base unit. An intercom switch for selecting intercom performances is provided for respective radio telephone sets. The slave radio sets of the radio telephone sets are turned OFF when the intercom switch is OFF, and transmitters of the slave radio sets of the radio telephone sets are turned ON. Consequently the connection between a wired telephone channel and the plurality of radio telephone sets can be controlled with a single base unit connected to the wired telephone channel.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBA1-1 SHIBAURA 1-CHOME MINATO-KU TOKYO 105-0023

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Koichi Tokyo, JP 310 4641
Murata, Yoshitoshi Yokosuka, JP 10 437
Yoshizawa, Kazuhiro Kashiwa, JP 20 447
Yotsutani, Akio Tokyo, JP 17 592

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