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:
Sep. 04, 2012
Filed:
Jun. 30, 2009
Applicants:
Rei Yoshikawa, Kanagawa, JP;
Atsushi Suzuki, Kanagawa, JP;
Keiji Yamaguchi, Kanagawa, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/217 (2011.01); H04N 3/14 (2006.01); H04N 5/335 (2011.01); H04N 5/235 (2006.01); H04N 9/64 (2006.01); H04N 5/228 (2006.01);
U.S. Cl.
CPC ...
Abstract
A comparator includes: a signal input terminal; a capacitor connected between the signal input terminal and a signal line; and a switching transistor for calibration which is turned on/off to periodically charge the capacitor with a voltage difference between a signal voltage and an operating point of the comparator, wherein an on-resistance of the switching transistor which is turned on when performing the charging is dynamically controlled by a control pulse having a limited amplitude.