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:
Mar. 06, 2012
Filed:
Jan. 31, 2007
Azuma Kawabe, Fukuoka, JP;
Hidenobu Kakioka, Fukuoka, JP;
Fumiaki Fukuoka, Fukuoka, JP;
Isao Hirota, Kanagawa, JP;
Masahiro Segami, Kanagawa, JP;
Yukihisa Kinugasa, Tokyo, JP;
Azuma Kawabe, Fukuoka, JP;
Hidenobu Kakioka, Fukuoka, JP;
Fumiaki Fukuoka, Fukuoka, JP;
Isao Hirota, Kanagawa, JP;
Masahiro Segami, Kanagawa, JP;
Yukihisa Kinugasa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A drive circuit applying two or more drive voltages to a charge transfer unit includes at least one current mirror circuit that receives a reference current and outputs a predetermined current; at least one switch circuit that switches the current output from the at least one current mirror circuit to apply the multiple drive voltages to the charge transfer unit; and at least one time constant circuit that gives a predetermined time constant to the reference current in the switching by the switch circuit.