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. 16, 1999
Filed:
Nov. 12, 1997
Kazushi Tamai, Hamamatsu, JP;
Hisashi Hirano, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
An optical disc reading device successively reads out data from an optical disc where the data are recorded on a packet-by-packet basis in such a manner that a link block is formed as a written-data gap between every adjoining packets. The data read out from the optical disc are decoded and subjected to an error detecting and correcting operation block by block. The blocks decoded and subjected to the error detecting and correcting operation are then sequentially stored into a data buffer. When a non-correctable error is found in a specific one of the blocks stored in the data buffer, the data reading section is controlled to continue the successive data readout from the optical disc if the specific block having the non-correctable error is a link block. But, if the specific block is not a link block, it is invalidated and the data reading section is controlled to stop the successive data readout from the optical disc. This arrangement effectively avoids degradation in reading performance even when an error occurs in a link block during advance readout of the data written on the packet-by-packet basis.