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:
Sep. 16, 2003

Filed:

Apr. 08, 1999
Applicant:
Inventor:

Yoshio Tokuyama, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/91 ;
U.S. Cl.
CPC ...
H04N 5/91 ;
Abstract

A recording/reproducing apparatus or a reproducing apparatus has a first, a second and a third magnetic heads. The first and second magnetic heads have different gap azimuth angles and are spaced 180 degrees apart from each other on a rotary head. The third magnetic head has the same gap azimuth angle as that of the second magnetic head and a specific relative positional relationship with the first magnetic head on the rotary head. Recording of each frame signal of a video signal is controlled as follows: The frame signal is divided into N (N being a integer of two or more) slant tracks on a magnetic tape at a standard tape speed in a standard mode; the frame signal is divided into N/2 slant tracks at a tape speed ½ of the standard speed in ½ speed mode; or the frame signal is divided into N/2 slant tracks at a tape speed ⅓ of the standard speed in ⅓ speed mode. Reproduction of the frame signal is carried out at a tape speed n (n being a speed coefficient and n≠1) times the tape speed at which the frame signal has been recorded in at least either the ½ or the ⅓ speed mode. The speed coefficient n is set to a value included in a predetermined range or given by at least either an equation (1) or (2): (1) n=N(2m+1)/(2i−1)±2/(2i−1); (2) n=Nm/i±1/i where a variable i is an integer from 1 to 10, and a variable m is an integer. The variable i may be set to 1 for the speed coefficient n that is (N−2) or more, whereas 2 or more for the speed coefficient n that is less than (N−2). The speed coefficient n may be set to a value given by the equation (1) or another value included in a predetermined range given by an equation (3); or a value given by the equation (2) or another value included in a predetermined range given by an equation (4): (3) n=N(2m+1)/(2i−1)±2/(1+&agr;)/(2i−1); (4) n=10m/i±(1+&agr;)/i where −0.4≦&agr;≦0.4.


Find Patent Forward Citations

Tokuyama, Yoshio. (2003). Video signal recording/reproducing apparatus and reproducing apparatus (U.S. Patent No. 6621981). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6621981

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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