Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1998-03-04
2000-12-12
Tran, Thang V.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 54, G11B 700
Patent
active
061607851
ABSTRACT:
In a further development of the CD, the so-called DVD, a data format was chosen which is upwards compatible with the CD. As a result, existing audio CDs can also be played on a DVD player. If complete error correction is not possible during the reproduction of a CD by an audio CD player, then simple measures for error concealment are additionally taken, but they are not always adequate. However, for cost reasons more complicated methods are not used in an audio CD player, since they would require a more powerful processor and a larger memory. However, a DVD player has this more complex hardware in any event, in order to enable the outstanding video quality that is intended. According to the invention, therefore, during the reproduction of an audio CD on a DVD player, one of various error concealment methods is carried out in dependence on the error rate that occurs, with a low error rate it being possible to effect error concealment that is considerably more accurate in comparison with a conventional CD player.
REFERENCES:
patent: 4796247 (1989-01-01), Vogelsang
patent: 5822288 (1998-10-01), Shinada
Deutsche Thomson-Brandt GmbH
Herrmann Eric P.
Tran Thang V.
Tripoli Joseph S.
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