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:
Oct. 12, 1999
Filed:
Mar. 04, 1997
Tetsuya Iwamoto, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Digital video tape recorder which includes a color framing sequence as part of a recorded control signal during standard recording, and which maintains synchronous color framing and/or continuous groups of pictures in two different editing modes in which a newly-suppled video signal is recorded on a magnetic tape already having stored thereon a previously recorded video signal. In a normal recording mode, a color framing signal indicating the occurrence of a newly supplied picture is detected in a supplied video signal. A video control signal that includes the detected color framing signal is generated and is recorded in a control track of the magnetic tape and the video signal is recorded in synchronization with the detected color framing signal in successive oblique tracks on the magnetic tape. In the first one of the editing modes, the traveling speed of the record medium is established so that the phase of the detected color framing signal and the phase of the generated reproduced color framing signal coincide thus maintaining synchronous color framing between the previously recorded and newly recorded video signals. In a second one of the editing modes, the group of pictures signal is inverted when the detected color framing signal and the reproduced color framing signal are out of phase by a pre-set amount this maintaining continuous groups of pictures between the previously recorded and newly recorded video signals.