Reproducing device and method for reproducing digital information recorded on optic disc

Abstract

A reproduction apparatus for reproducing digital information recorded on an optical disc, comprises an optical pickup for reading said digital information recorded on said optical disc to have said digital information converted into electric signals, said digital information containing errors appearing when said digital information is read by said optical pickup; signal amplifying means for amplifying said electric signals converted from said digital information read by said optical pickup; signal processing means for processing said electric signals in one or more times of retry routines to correct said errors outputted as said electric signals from said signal amplifying means; a buffer memory for storing said electric signals outputted from said signal processing means; signal decoding means for decoding said electric signals stored in said buffer memory and outputted from said buffer memory; pickup driving means for driving said optical pickup to move on said optical disc, said errors being associated with respective addresses to be targeted by said optical pickup when said optical pickup is moved by said pickup driving means; information residue detecting means for detecting an amount of residue digital information remaining in said buffer memory; and retry controlling means for controlling said one or more times of retry routines based on said amount of residue digital information detected by said information residue detecting means when said digital information fails to be read out of said optical disc.

Description

technical field [0001] The present invention relates to a reproducing apparatus and method for reproducing digital information such as video and audio signals recorded on an optical disc. Reproduction devices include DVD-video players and other disc video players. When digital information on a disc operated with a DVD-Video player cannot be read. The reproducing method is implemented by retrying routines to continuously reproduce digital information such as video and audio signals recorded on an optical disc. [0002] Generally, such reproducing apparatuses are designed to realize digital information such as video and audio signals recorded on an optical disc by reading out the digital information recorded on the optical disc. If external damage such as cracks, scratches and fingerprints occurs on the disc, the reproducing device cannot operate normally and cannot reproduce the digital information recorded in each address with external damage. For this reason, the reproduci...

AI Technical Summary

Problems solved by technology

Afterwards, in some cases, the amount of digital information stored in the buffer memory 115 is less than the decoded amount of the digital information output from the buffer memory 115, the video signal output by the retry device has some block noise, that is, the video signal output by the buffer memory 115 Rectangular noise on the image caused by insufficient digital information of

[0015] (3) When the digital information recorded on the optical disc 111 is output by the optical pickup 112, there are various causes of failure in the error correction process

That is to say, the rereading operation of the data recorded on the failed outer circumference track consumes the blank amount of the buffer memory 115 of the reproducing device 180

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