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:
Mar. 06, 1990
Filed:
Dec. 02, 1988
Yukihiko Haikawa, Higashihiroshima, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A digital magnetic recording and reproducing device of rotatable magnetic head type includes a rotary drum, first and second recording and reproducing heads situated at opposite positions on the circumference of the rotary drum with opposite azimuth angles, and a third recording and reproducing head adjacent to the second recording and reproducing head, with an azimuth angle opposite to the azimuth angle of the adjacent second head. In the normal reproduction mode, the first and second heads are used, but in the long time reproduction mode, the second and third heads are used. However, the rotational speed of the rotary drum is the same in each mode, allowing for the use of one equalizer for reproducing the signal for both the normal reproduction mode and long time reproduction mode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile