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:
Feb. 09, 1988
Filed:
Sep. 16, 1985
Applicant:
Inventors:
Minoru Kosaka, Tokorozawa, JP;
Tutomu Banno, Tokorozawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; G11B / ;
U.S. Cl.
CPC ...
358342 ; 358343 ; 358338 ; 369 49 ; 369 50 ;
Abstract
A recording disk playback apparatus capable of playback of recording disks having digitized audio data recorded thereon, (CDs), disks having digitized audio data together with audio and video data recorded by frequency modulation recorded thereon (LDDs), and disks having only video and audio data recorded by frequency modulation thereon, (LDs), is provided with means for discriminating the type of disk which is to be played and for producing signals indicating the disk type, for switching control purposes. The discrimination means will reliably distinguish between LDs and LDDs, even if these are of identical size.