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. 12, 2002
Filed:
Jul. 14, 2000
Masahiro Matsumaru, Abiko, JP;
Victor Company of Japan, Ltd., Kanagawa-Ku, JP;
Abstract
A rotary head drum device includes a rotary drum and a plurality of rotary heads mounted on the rotary drum. The rotary heads record and reproduce a signal on and from a magnetic tape. The rotary heads are as follows. First and second rotary heads for an information signal in a low-frequency range are opposed to each other diametrically with respect to the rotary drum, and are different from each other in azimuth angle. A third rotary head is designed for digital signals in frequency ranges higher than the frequency range of the information signal, and for first and second operation modes being different from each other in data transmission rate. A fourth rotary head for a digital signal in the second operation mode is opposed to the third rotary head diametrically with respect to the rotary drum, and is equal in azimuth angle to the third rotary head. A fifth rotary head for a digital signal in the first operation mode is substantially opposed to the third rotary head diametrically with respect to the rotary drum, and is different from the third rotary head in azimuth angle. The fourth and fifth rotary heads are in a double azimuth head structure. Sixth and seventh rotary heads for a digital signal in the second operation mode are opposed to each other diametrically with respect to the rotary drum, and are equal to each other in azimuth angle.