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. 19, 2002
Filed:
Mar. 29, 1999
Yoshiki Hirose, Daito, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The invention provides a magnetic recording-reproduction device which comprises a CTL signal recording circuit for recording a control signal, a CTL duty setting circuit for setting a variable duty ratio for the control signal, a CTL signal reproduction circuit for reproducing the control signal, a CTL duty identification circuit for identifying the duty ratio of the reproduced control signal, and a system control circuit for controlling the operation of the device. The system control circuit decodes magnetic tape management information superposed on the control signal based on the result of identifying the duty ratio by the identification circuit when a command is given to record video signals, and controls validation/invalidation of the command according to the result of decoding.