EP0424903A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Data recording system
Assignee: NEC Corp
•
Filing: 1990-10-24
•
Granted: —
•
Expires: 2010-10-24
Abstract
Abstract A data recording system for recording in a CD-ROM or similar recording medium a data file containing data such as compressed audio and video data and an index file containing index data for searching the individual data of the data file. The data stored in the data file are recorded in a CD-ROM in three hierarchical stages, i. e. , titles, scenes and shots or chapters, scenes and clips. The index file has a hierarchical format associated with that of the data file in order to manage the data of the data file in consecutive stages.
Inventors
- 👤 Hideto C/O Nec Home Electronics Ltd. Kunihiro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 18:47
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00007; G11B20/10; G11B20/12; G11B20/1217; G11B20/1251; G11B20/1254; G11B27/00; G11B27/02; G11B27/031; G11B27/034; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/32; G11B27/327; G11B27/329; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/9201; H04N5/9202; H04N5/9203; H04N5/926; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; G11B20/10527; G11B2020/10537; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/213; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/255; H04N5/84; H04N5/85
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
In a data recording system for recording in a recording medium a data file containing data including compressed audio data and compressed video data, and an index file containing index data for searching said data of said data file, the improvement wherein said data contained in said data file have a hierarchical format, said index file having a hierarchical format associated with said hierarchical format of said data file, said index file containing addresses on the basis of at least a minimum access unit of data.
Claim 2
Dependent Claim
86 words
In a data recording system for recording in a recording medium a data file containing data including compressed audio data and compressed video data, and an index file containing index data for searching said data of said data file, the improvement wherein said data contained in said data file have a hierarchical format, said index file having a hierarchical format associated with said hierarchical format of said data file, said index file containing addresses on the basis of at least a minimum access unit of data.
Claim 3
Dependent Claim
76 words
A system as claimed in claim 1, wherein, among sectors of said recording medium in which data constituting said minimum access unit of said data file is recorded, the last sector has dummy data in a portion thereof which follows an effective data portion and where no data exists, whereby the leading end of said data constituting said minimum access unit coincides with the leading end of any one of said sectors of said recording medium.
Claim 4
Dependent Claim
69 words
A system as claims in claim 1 or 2, wherein a frame constituting a basic unit of said data file stores a plurality of kinds of data, said plurality of kinds of data each being headed by information representative of a kind of said data, sinformation representative of a length of said data, and information representative of whether or not said data is the last data in said frame.
Claim 5
Dependent Claim
18 words
A system as claimed in claim 3, wherein said plurality kinds of data each has a variable length.
Claim 6
Dependent Claim
27 words
A system as claimed in claim 1, wherein a frame constituting a basic unit of said data file stores a particular code at the leading end thereof.
Claim 7
Dependent Claim
15 words
A system as claimed in claim 5, wherein said particular code comprises a start code.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.