Accessing control for optical recording device capable of perfor

Details Accessing control for optical recording device capable of perfor Accessing control for optical recording device capable of perfor

1997-03-17

2000-07-18

Dinh, Tan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

3692753, G11B 1722, G11B 724

Patent

active

060916745

ABSTRACT:
The record information (42, 43, 44) and the access information (51: DSI) are recorded on a record track (1a) of an information record medium (1: DVD) such that the record information and the access information are divided into a plurality of first data groups (30: VOBU), each of which is a unit able to be accessed by an information reproducing apparatus (S2) and each of which comprises the record information and the access information, and are divided into a plurality of second data groups (20: CELL), each of which is a unit able to be logically divided in the reproduction and each of which comprises a series of the first data groups arranged along the record track among the first data groups. Management information (PGCI) are collectively recorded at one portion of the record track, and comprises: a plurality of time unit address informations (200) each indicating an address of respective one of the first data groups to which the record information in every predetermined time unit belongs; and discontinuity information (201) indicating whether or not two addresses, which are indicated to be apart from each other by one time unit by the time unit address informations, belong to a same one of the second data groups.

REFERENCES:
patent: 5457669 (1995-10-01), Kim et al.
patent: 5691972 (1997-11-01), Tsuga et al.

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