Data reproduction apparatus and reproduction method

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium

Reexamination Certificate

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C386S349000, C386S349000

Reexamination Certificate

active

06959141

ABSTRACT:
A data reproduction apparatus and a data reproduction method can alleviate the workload of a special processing operation of fast forward or reverse data reproduction and improve the data access speed for fast reproduction of data. The data reproduction apparatus comprises an optical pickup2for reproducing data from an optical disk1, a sector detector4for detecting a first piece of data information indicating if a data is to be output as signal or not, a ring buffer memory6for storing data, an error correction circuit7for correcting errors in the data to be output as signal as indicated by the first piece of data information out of the stored data, a stream detector10for detecting a second piece of data information indicating the data to be out as signal out of the data corrected for errors, decoders13, 16for decoding the data corrected for errors and stored in the ring buffer memory6as signal to be reproduced and a system controller22for control the data to be decoded and the data not to be decoded by referring to the first piece of data information and the second piece of data information detected by a second data information detection means.

REFERENCES:
patent: 5392129 (1995-02-01), Ohtaka et al.
patent: 5920529 (1999-07-01), Ota et al.
patent: 6035092 (2000-03-01), Fujinami
patent: RE37327 (2001-08-01), Yonemitsu et al.
patent: 6308004 (2001-10-01), Kawamura et al.

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