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. 28, 1992
Filed:
Jun. 27, 1989
Takashi Koga, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
In a video tape recorder and reproduction apparatus, a reproduction circuit includes a switcher for generating a composite video signal composed of a multiplicity of synchronization signals from two or more video heads, a synchronization signal separator for receiving the composite video signal and separating from the composite video signal the synchronization signal, an error detection circuit for receiving the synchronization signal, detecting an error in the synchronization signal from an average period of the synchronization signals, and outputting an error signal representative of the error, a hold circuit for receiving the error signal and generating a correction signal having a constant value for each average period of the synchronization signals, with a value of the correction signal being adjusted by being added with the error signal and holding the adjusted value for each successive period of the synchronization signals and a delay circuit for receiving the composite video signal and correcting the time base of the composite video signal in response to the correction signal.