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:
Apr. 16, 1991
Filed:
Feb. 23, 1989
Hiromu Kitaura, Osakasayama, JP;
Mitsuo Isobe, Osaka, JP;
Isao Kawahara, Hirakata, JP;
Yoshio Hirauchi, Osaka, JP;
Yuichi Ninomiya, Kawasaki, JP;
Yoshimichi Ohtsuka, Kawasaki, JP;
Yoshinori Izumi, Tokyo, JP;
Matsushita Electric Industrial Co., Osaka, JP;
Nippon Hoso Kyokai, Tokyo, JP;
Abstract
A clamp system for television signal comprises a first clamp device for clamping to a clamp control voltage supplied from an external source by a horizontal clamp pulse and a second clamp device for controlling the DC potential of the television signal by adding the externally-supplied control voltage to an input television signal. The first clamp device is used during the period requiring an early clamp start, and the second clamp device is operated under normal conditions.