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:
Feb. 25, 1992
Filed:
May. 24, 1989
Rene Baus, Jr, Rancho Palos Verdes, CA (US);
Kenneth C Petty, Huntington Beach, CA (US);
American Magnetics Corporation, Carson, CA (US);
Abstract
A video cassette rotary scanner is adapted for high capacity, high speed, digital audio spectrum data recording by the use of a buffer memory and a servo control system. The buffer memory is operative at a speed much higher than that of the tape. The tape is maintained at relaxed tension until a high data occupancy signal from the buffer activates the data write operation. In response, the tape tension is increased for a write operation, and relaxed again only when the buffer sends a low data occupancy signal. The use of the buffer along with capstan, take-up reel and supply reel motors responsive to the two signals permits tape wear to be decreased substantially while increasing tape capacity.