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:
Jun. 02, 1992
Filed:
Aug. 17, 1990
Takayoshi Yamaguchi, Nagareyama, JP;
Satoru Sagawa, Kashiwa, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A distortion compensation circuit of a VTR detects distortion of an input ramp signal during a blanking period of a reproduced video signal and compensates the distortion of the entire reproduced video signal. The input ramp signal included in the digital reproduced video signal is compared with a comparison ramp signal equal to a ramp signal to be recorded and the difference thereof can be obtained as a compensation data signal. During the blanking period of the reproduced video signal, the compensation data signal is stored in a compensating memory, using the input ramp signal as an address signal, and during a non-blanking period, the contents of the compensating memory are read out, using the reproduced video signal itself as an address signal. The read compensation data signal is added to the reproduced video signal, whereby distortion of the reproduced video signal is compensated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile