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:
Nov. 20, 2001
Filed:
Jun. 26, 1998
Toshihiko Nishiyama, Tokyo, JP;
Kouji Sakata, Tokyo, JP;
Junko Kurihara, Tokyo, JP;
Gaku Harada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A power supply device of the present invention includes an electric double layer capacitor connected to, e.g., an HDD (Hard Disk Drive), CD-ROM (Compact Disk Read Only Memory) drive, floppy disk drive or similar motor-driven equipment, and another electric double layer capacitor connected to, e.g., a pulse generating device included in a radio transmitter. The capacitors each feed power when the load of the associated equipment sharply varies during operation of the equipment. This makes it needless for a main power supply to feed such power. A laminate polymer battery is connected to a low voltage IC (Integrated Circuit) and feeds power thereto. This also makes it needless for the main power to feed power to the low voltage IC, and allows a short feed line to connect the laminate polymer battery and IC. The short feed line reduces the transfer of noise to the IC and therefore malfunction ascribable to noise.