Error counting apparatus for counting an error number of a...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval

Reexamination Certificate

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C369S059250

Reexamination Certificate

active

07099255

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.

REFERENCES:
patent: 6272089 (2001-08-01), Kato
patent: 6519214 (2003-02-01), Hikima
patent: 6552983 (2003-04-01), Yoshida et al.
patent: 6594215 (2003-07-01), Moriwaki

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