Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1995-10-02
1996-10-29
Tran, Thang V.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369 58, 369 48, G11B 700
Patent
active
055703313
ABSTRACT:
An end of a reproduction of each piece of main data recorded on an information record medium is detected, on which each piece of sub code data corresponding to each piece of main data is also recorded to indicate information for controlling the reproduction of each piece of main data, in a reproducing system which reads the main data and the sub code data on the basis of a predetermined clock. The sub code data include a first data portion, which value changes when the reproduction of each piece of main data is ended, and a second data portion, which value changes in correspondence with a content of the main data and has a predetermined relationship with a value of the first data portion. The method is provided with the steps of: detecting a change in the value of the first data portion during the reproduction of each piece of main data; detecting a current value of the second data portion when the change is detected; judging whether or not the detected current value of the second data portion is equal to a predetermined value of the second data portion, which is supposed to be obtained when the first data portion is normally changed at the end of the reproduction of each piece of main data; and detecting the end of the reproduction of each piece of main data on the basis of a result of judgement in the judging step.
REFERENCES:
patent: 5295123 (1994-03-01), Seri et al.
patent: 5392265 (1995-02-01), Takezawa
patent: 5420843 (1995-05-01), Yoshida
patent: 5471441 (1995-11-01), Nonaka et al.
Pioneer Electronic Corporation
Tran Thang V.
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