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:
Jul. 25, 1989
Filed:
May. 13, 1987
Sadahiro Ohyama, Chigasaki, JP;
Yoshiaki Morita, Sagamihara, JP;
Yoshiaki Ueno, Kawasaki, JP;
Kazuhiro Tazawa, Yamato, JP;
Mitsumi Electric Co., Ltd., Tokyo, JP;
Abstract
A drum assembly for carrying a plurality of rotary recording and reproducing heads of a magnetic recording and reproducing apparatus recording and reproducing a signal on and from a magnetic recording medium in a rotative manner. The drum assembly comprises a stationary drum fixed on a magnetic recording and reproducing apparatus body, a rotary body supported on the stationary drum in a rotative manner for carrying the plurality of rotary recording and reproducing heads, amplifying means disposed in the rotary body for amplifying the reproducing signal supplied from the plurality of rotary recording and reproducing heads, and signal transmitting means at an interface between the stationary drum and the rotary body for transmitting the recording signal from a recording and reproducing circuit to the plurality of rotary recording and reproducing heads and for transmitting the reproduced signal reproduced by the rotary recording and reproducing heads and amplified by the amplifying means to the recording and reproducing circuit.