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:
May. 02, 1995
Filed:
Apr. 18, 1994
Sony Corporation, Tokyo, JP;
Abstract
A recording/reproducing apparatus in which the number of revolutions of a recording head 14 is controlled depending on the frequency of the vertical synchronization signals for picture signals supplied from outside for digitally recording/reproducing picture data. It is not the recording head 14 but the playback head 16 whose number of revolutions is controlled in such manner during reproduction. In forming DRCK control signals employed for controlling the number of revolutions of the recording head, the frequency of the vertical synchronization signals for the picture signals supplied from outside is corrected so as to be within a range of offset of .+-.1% relative to the frequency of standard frequency vertical synchronization signals, and the DRCK control signals are formed based upon the vertical synchronization signals corrected in this manner. This permits picture data to be recorded so as to assure interchangeability between different apparatus of the same version, and makes it possible to improve the stability after phase capturing of, for example, a DRCKPLL circuit 34 designed to form the DRCK control signals.