Optical disc reading device

Details Optical disc reading device Optical disc reading device

1997-11-12

1999-03-16

Edun, Muhammad N.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 58, 369 47, G11B 700

Patent

active

058838694

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.

REFERENCES:
patent: 5363362 (1994-11-01), Maeda et al.
patent: 5590108 (1996-12-01), Mitsuno et al.

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