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:
Nov. 03, 1992
Filed:
Jan. 24, 1992
Applicant:
Inventors:
Yasuo Nagai, Kanagawa, JP;
Mitsugu Yoshihiro, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
3889075 ; 360 7301 ;
Abstract
A drum servo circuit (310) is controlled by one (301) of a pair of microprocessors, and a reel servo circuit (220) and a capstan servo circuit (240) are controlled by the other microprocessor (201). Accordingly, the burden on each microprocessor is relatively light, and interrupt processing is performed with predetermined timing to improve servo performance. Further, tape movement can be controlled smoothly and quickly.