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.

Date of Patent:
Jan. 15, 2008

Filed:

Feb. 19, 2003
Applicants:

Hiroo Okamoto, Yokohama, JP;

Kyoichi Hosokawa, Yokohama, JP;

Hitoaki Owashi, Yokohama, JP;

Hiroaki Tachibana, Chigasaki, JP;

Takaharu Noguchi, Yokohama, JP;

Inventors:

Hiroo Okamoto, Yokohama, JP;

Kyoichi Hosokawa, Yokohama, JP;

Hitoaki Owashi, Yokohama, JP;

Hiroaki Tachibana, Chigasaki, JP;

Takaharu Noguchi, Yokohama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/26 (2006.01); H04N 5/91 (2006.01);
U.S. Cl.
CPC ...
Abstract

A video signal input-output circuit and a recording-reproduction apparatus in which a digitally compressed video signal input in packet form can be recorded and reproduced efficiently and in stable fashion. In this apparatus, a clock reference is detected from a packet signal containing the clock reference and a digitally compressed video signal, a time stamp for a packet is generated using a clock signal in phase with the clock reference and added to the particular packet, and the packet signals with the time stamp added thereto are recorded closely to each other in a data storage element such as a magnetic recording medium. At playback, the packet interval is output by being restored to the original length on the basis of the time stamp added to the packet in store.


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