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1. (WO2001035649) AN ARRANGEMENT FOR RECORDING NAVIGATION INFORMATION IN A DATA RECORDER

Pub. No.:    WO/2001/035649    International Application No.:    PCT/US2000/030344
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Sat Nov 04 00:59:59 CET 2000
IPC: G06T 9/00
G11B 19/02
G11B 27/00
G11B 27/034
G11B 27/036
G11B 27/10
G11B 27/11
G11B 27/26
G11B 27/30
G11B 27/32
G11B 27/34
G11B 27/36
H04N 5/781
H04N 5/783
H04N 5/85
H04N 9/804
H04N 9/806
H04N 9/82
Applicants: THOMSON LICENSING S.A.
XIE, Jianlei, James
SCHULTZ, Mark, Alan
RICH, Michael, Dillion
Inventors: XIE, Jianlei, James
SCHULTZ, Mark, Alan
RICH, Michael, Dillion
Title: AN ARRANGEMENT FOR RECORDING NAVIGATION INFORMATION IN A DATA RECORDER
Abstract:
A data recorder for a digital video disc includes a first-in, first-out buffer memory (106). The memory (106) is responsive to an input data signal for sequentially storing in a first-in, first-out manner a running, data of Video Object Units (VOBU'S), defined in the Digital Versatile Disc (DVD) Specification for Read Only Disc (the specification), prior to recording the data. In a first embodiment of the invention, the value of each address pointer of a first sub-set of address pointers contained in a field VOBU Search Information (VOBU SRI), are established in accordance with the VOBU's contained in the buffer memory (106). The value of each address pointer of a second sub-set of the address pointers, associated with VOBU's positioned further behind, in a sequence of presentation, than each of the VOBU's contained in the memory (106) is not made to conform to the Specification. Thereby, a storage capacity requirement from the buffer memory (106) is reduced. In a second embodiment of the invention, the size of each Cell in the data format is constrained to only 59 VOBU's. The entries for each address pointer of the second sub-set, is made to contain a 'does not exist' code.