Optical disc reproduction apparatus

Details Optical disc reproduction apparatus Optical disc reproduction apparatus

2005-05-10

2005-05-10

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S059190, C369S059200

Reexamination Certificate

active

06891785

ABSTRACT:
An optical disc reproduction apparatus includes a sector detection section for detecting a sector; a sector reproduction time measuring section for measuring a reproduction time of the sector, and outputting sector reproduction time data which represents the measured reproduction time of the sector; an unrecorded portion detection section for detecting an unrecorded portion which is a portion of the sector in which no data is recorded; an unrecorded portion time measuring section for measuring a reproduction time of the unrecorded portion, and outputting unrecorded portion time data which represents the measured reproduction time of the unrecorded portion; and a sector determination section for determining whether the sector is an unrecorded sector or not, based on a relationship between the sector reproduction time data and the unrecorded portion time data, the unrecorded sector being a sector which is in an unrecorded state.

REFERENCES:
patent: 5155722 (1992-10-01), Yoshida
patent: 5892740 (1999-04-01), Nagasawa et al.
patent: 6044051 (2000-03-01), Miyagawa et al.
patent: 6657929 (2003-12-01), Minamino et al.
patent: 1167972 (1997-12-01), None
Chinese Office Action for corresponding Application 02121726.2, dated Apr. 6, 2004.

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