The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 1989
Filed:
Oct. 27, 1987
Toshihiro Hara, Tokyo, JP;
Akio Yotsutani, Tokyo, JP;
Ryoji Kawasaki, Tokyo, JP;
Kazuyuki Tate, Aichi, JP;
Syoji Huse, Tokyo, JP;
Koji Ono, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Nippon Telegraph & Telephone Corp., Tokyo, JP;
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
A radio telephone system includes a base station connected to a telephone exchanger and a plurality of mobile stations connected to the base station through a radio channel including a control channel and communication channels. The base station includes a transmitter/receiver, a receiver, and a controller. In a stand-by mode, the controller sets a channel of the transmitter/receiver to the control channel to receive a calling signal from each mobile station and sets a channel of the receiver to a given communication channel to monitor vacancy of the communication channels.