Patent EP0133790A1 successfully refreshed from Google Patents.
EP0133790A1
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EP
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Disc playback apparatus
Assignee: Sony Corp
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Filing: 1984-07-30
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Granted: —
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Expires: 2004-07-30
Abstract
Abstract @ An apparatus is disclosed for reproducing a disc, such as an optical disc, having main digital data, such as video data, stored thereon in successive blocks associated with sub-digital data for searching. Each of said blocks comprises a header signal and a block address signal followed by the main digital data. Means are provided for searching the main digital data using the sub-digital data, for detecting the header signal, for detecting whether the block address is the required one, and for deriving the the required main digital data.
Inventors
- 👤 Shunsuke C/O Patents Division Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:01
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1806; G11B20/1809; G11B20/12; G11B27/00; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B27/32; G11B27/327; G11B27/329; G11B7/00; G11B7/004; G11B7/005; G11B7/007; G11B7/013; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/9201; H04N5/9206; H04N5/9208; G11B20/1217; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/213; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/255; G11B27/02; G11B27/031; G11B27/034
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
A disc playback apparatus for reproducing a disc having main digital data stored thereon in successive blocks associated with sub-digital data for searching, characterised by: each of said blocks comprising a header signal and a block address signal followed by said main digital data, means for searching said stored main digital data using said sub-digital data so as to locate a block including desired said main digital data, means for detecting said header signal, means for detecting whether said block address signal is the required one, and means for deriving said required main digital data.
Claim 2
Dependent Claim
95 words
A disc playback apparatus for reproducing a disc having main digital data stored thereon in successive blocks associated with sub-digital data for searching, characterised by: each of said blocks comprising a header signal and a block address signal followed by said main digital data, means for searching said stored main digital data using said sub-digital data so as to locate a block including desired said main digital data, means for detecting said header signal, means for detecting whether said block address signal is the required one, and means for deriving said required main digital data.
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1 wherein said main digital data comprises a video signal.
Claim 4
Dependent Claim
21 words
Apparatus according to claim 2 wherein said means for deriving said main digital data is connected to a video display device.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 3 wherein said main digital data is computer program data.
Claim 6
Dependent Claim
11 words
Optical playback apparatus according to any one of the preceding claims.
Claim 7
Dependent Claim
30 words
A disc having digital data stored thereon in successive blocks, characterised in that each block comprises a header signal and a block address signal followed by data signals representing information.
Claim 8
Dependent Claim
30 words
A disc having digital data stored thereon in successive blocks, characterised in that each block comprises a header signal and a block address signal followed by data signals representing information.
Claim 9
Dependent Claim
19 words
A disc according to claim 6 wherein each said block further comprises a start signal following said header signal.
Claim 10
Dependent Claim
18 words
A disc according to claim 6 or claim 7 wherein said header signal comprises a sequence of "0"s.
Claim 11
Dependent Claim
15 words
A disc according to claim 7 wherein said start signal comprises a sequence of "I"s.
Claim 12
Dependent Claim
25 words
A disc according to any one of claims 6 to 9 wherein said block address signal consists of a sequence of address words repeated twice.
Claim 13
Dependent Claim
12 words
An optical disc according to any one of claims 6 to 10.
References Cited (Backward Citations)
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