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:
Oct. 26, 1999
Filed:
Oct. 24, 1997
Takashi Tajiri, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
A disc reproducing apparatus comprising a means for reproducing data recorded in a disc, a means for making a decision as to whether the reproduced data are proper or not, a means for detecting a face-down state of the disc in response to the result of the decision, and a means for controlling the driving of the disc in response to the result of the detection. When a disc (DVD) loaded in a normal state is rotated clockwise, the point of reproduction is gradually shifted toward the outermost of the disc. However, when a disc loaded in a face-down state is rotated, the point of reproduction is shifted toward the innermost of the disc, so that the required continuity of addresses fails to be ensured. Thus, the face-down state of the loaded disc can be detected from the result of the decision indicating non-continuity of the addresses.