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:
Aug. 17, 1993
Filed:
Oct. 22, 1992
Masato Yamagata, Kanagawa, JP;
Yoshikazu Tanaka, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A cordless telephone having a base unit connected to a telephone line network, a handset unit operable for communicating with the base unit by way of radio waves, a device for establishing a standby mode in which the handset unit intermittently monitors at least one predetermined channel in a standby mode and for alternatively establishing a low power sleep mode, a device at the base unit for detecting the arrival of an incoming call from the telephone line network and for informing the remote handset unit of the arrival through the predetermined channel, a device for exchanging information between the base unit and the handset unit identifying respective available channels thereof and a device for storing information identifying at least one of the available channels which is the same for both the base unit and the remote handset unit, and which constitutes the at least one predetermined channel which is intermittently monitored by the handset unit in the standby mode.