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:
Jan. 25, 2000
Filed:
Feb. 24, 1997
Koichi Abe, Tanashi, JP;
Yuji Kurosawa, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A communication apparatus comprises a main power supply for supplying a power to respective units of the apparatus, a central control unit powered from said main power supply for controlling the entire apparatus, a rewritable data memory unit, a main power supply control unit for controlling an operation of said main power supply, a secondary battery charged by said main power supply for supplying a power to said main power supply control unit and said memory unit, and a unit for supplying the power from said secondary battery to said memory unit during the stop of said main power supply and supplying the power from said main power supply to said memory unit during the operation of said main power supply.