Error counting apparatus and method
AssigneePioneer Corporation
InventorsMasahiro Kato, Naoharu Yanagawa, Tatsuhiro Yone, Yuko Muramatsu, Shinji Suzuki
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Abstract
In an error counting apparatus and method, there are provided a reproducing section for reproducing the optical disc and a counter for counting the error number of the pre-pit signal based on an output of the reproducing section. When it is detected that the reproducing section come up to the reproduction of the emboss portion, a counting operation of the counter is started in response to this detection. When it is detected that the reproducing section has reproduced the optical disc in the predetermined interval after the counting operation is started, the counting operation of the counter is stopped in response to this detection.
Claims8
An error counting apparatus for counting an error number of a pre-pit signal in a recording area containing an emboss portion formed on an optical disc, said apparatus comprising:
- a reproducing section adapted to reproduce the optical disc;
- a counter for counting the error number of the pre-pit signal based on an output of the reproducing section;
- an emboss portion detector for detecting that the reproducing section comes up to reproduction of the emboss portion;
- a count start controller for starting a counting operation of the counter in response to an output of the emboss portion detector;
- a predetermined interval detector for detecting that the reproducing section has reproduced the optical disc in a predetermined interval after the counting operation is started;
- and
- a count stop controller for stopping the counting operation of the counter in response to an output of the predetermined interval detector.
An error counting method of counting an error number of a pre-pit signal in a recording area containing an emboss portion formed on an optical disc, said method comprising the steps of:
- providing a reproducing section adapted to reproduce the optical disc and a counter for counting the error number of the pre-pit signal based on an output of the reproducing section;
- detecting that the reproducing section comes up to reproduction of the emboss portion;
- starting a counting operation of the counter in response to this detection;
- detecting that the reproducing section has reproduced the optical disc in a predetermined interval after the counting operation is started;
- and
- stopping the counting operation of the counter in response to this detection.
Dependencies are inferred from the claim text.