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:
Apr. 11, 1989
Filed:
Nov. 17, 1987
Masanobu Nishimiya, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An information recording and/or reproducing apparatus reproduces a pre-recorded address information from a recording medium when recording and/or reproducing a main information signal on and/or from the recording medium, where the address information is pre-recorded on substantially parallel tracks of the recording medium with a predetermined period. The information recording and/or reproducing apparatus comprises a first circuit for producing a reproduced signal by scanning one track on the recording medium, a second circuit for generating an address interval signal having a predetermined level during a time corresponding to an interval in which the address information is pre-recorded on the recording medium, and a third circuit for passing the reproduced signal from the first circuit only during the predetermined level of the address interval signal so as to obtain only the address information reproduced from the one track.