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:
Jun. 14, 1994
Filed:
Apr. 13, 1993
Applicant:
Inventor:
Toru Akiyama, Tokorozawa, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358340 ; 358335 ; 369 54 ; 369124 ; 455295 ; 348614 ;
Abstract
A crosstalk detector for detecting the crosstalk of signals optically read from a recording medium having a plurality of tracks. The read signal levels between adjacent tracks at the positions where crosstalk detecting signals are recorded are compared and used to calculate a quantity of crosstalk of the read signals.