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:
Jun. 08, 2004
Filed:
Aug. 04, 2000
Masahiro Izaki, Hirakata, JP;
Keisuke Nakaya, Daito, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A cordless telephone includes a handset cordlessly linked to a base unit. The base unit includes a storage device for storing a security ID. A detection device detects a start of a charge. A first transmission device transmits the security ID to the handset. A generating device generates a new security ID which is different from the security ID. A second transmission device transmits the new security ID to the handset. A judging device judges whether a response corresponds to either the security ID transmitted by the first transmission device or the new security ID transmitted by the second transmission device has been received from the handset. A link device establishes a cordless link with the handset. An update device updates the security ID stored in the storage device. The new security ID is generated when response from the handset is not received within a predetermined time.