Patent EP0558853A2 successfully refreshed from Google Patents.
EP0558853A2
Expired / Lapsed
EP
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Recording medium and digital video-information recording/reproducing system
Assignee: Pioneer Video Corp
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Filing: 1992-11-13
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Granted: —
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Expires: 2012-11-13
Abstract
Abstract An information recording/reproducing system in which, at the time of information recording, an input digital video signal is divided into a plurality of frequency band components, and information portion data consisting of a predetermined number of subblock data (subblock 0, subblock 1, etc) with each piece of the digital video signal data per frequency band taken as one subblock data and head portion data (DL0, DL1 etc) including identification data blocks indicating frequency bands for the respective subblocks are recorded as one block on a recording medium. At the time of reproduction, individual pieces of identification data in a header portion are discriminated from the digital video signal, picked up from the recording medium, block by block, and the digital video signal of each subblock is selectively extracted in accordance with the identification data, and the bands of the extracted digital video signals are combined to thereby generate reproduced digital video signals. <IMAGE>
Inventors
- 👤 Naoto C/O Pioneer Video Corp. Itoh
- 👤 Yoshihisa c/o Pioneer Video Corp. Nagai
- 👤 Satoru c/o Pioneer Video Corp. Nomura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 17:15
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9261; H04N5/9264; H04N5/9265; H04N5/9267; H04N5/84; H04N5/85
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
A recording medium on which a digital video signal is recorded in the form of blocks, each block comprising an information portion consisting of a plurality of subblocks, and a header portion including a plurality of identification data blocks located preceding said information portion and respectively associated with said subblocks, each identification data block indicating the frequency band of said recorded digital video signal in the associated one of said subblocks.
Claim 2
Dependent Claim
117 words
An information recording system for recording a digital video signal on a recording medium (19), comprising: means (1) for dividing an input digital video signal into a plurality of frequency band components and generating a group of band digital video signal data; means (13) for producing information portion data consisting of a predetermined number of subblock data with each piece of said band digital video signal data per frequency band taken as one subblock data; means (14) for producing header portion data including identification data blocks indicating the frequency bands respectively associated with said subblocks; and means (18) for recording said information portion data and said header portion data as one block on said recording medium (19).
Claim 3
Dependent Claim
176 words
An information reproducing system for a recording medium (20) on which a digital video signal has been recorded in the form of blocks, each block comprising an information portion consisting of a plurality of subblocks, and a header portion including a plurality of identification data blocks located preceding the information portion and respectively associated with the subblocks, each identification data block indicating the frequency band of the recorded digital video signal in the associated one of the subblocks, the system comprising: reading means (21) for reading said digital video signal from said recording medium; identifying and selecting means (24) for acquiring, block by block, identification data in said header portion from said digital video signal output from said reading means (21) and selectively relaying said digital video signals of said subblocks in accordance with said identification data; and means (22) for, every time digital video signals for a predetermined number of subblocks are relayed from said identifying and selecting means, performing band combination of said relayed digital video signals to thereby generate reproduced digital video signals.
Claim 4
Dependent Claim
216 words
An information recording/reproducing system for recording a digital video signal on a recording medium (19,20) and reproducing the digital video signal therefrom, comprising: means (1) for dividing an input digital video signal into a plurality of frequency band components and generating a group of band digital video signal data; means (13) for producing information portion data consisting of a predetermined number of subblock data with each piece of said band digital video signal data per frequency band taken as one subblock data; means (14) for producing header portion data including identification data blocks indicating the frequency bands respectively associated with said subblocks; means (18) for recording said information portion data and said header portion data as one block on said recording medium; reading means (21) for reading said digital video signal from said recording medium; identifying and selecting means (24) for acquiring, block by block, identification data in said header portion from said digital video signal output from said reading means and selectively relaying said digital video signals of said subblocks in accordance with said identification data; and means (32) for, every time digital video signals for a predetermined number of subblocks are relayed from said identifying and selecting means, performing band combination of said relayed digital video signals to thereby generate reproduced digital video signals.
Claim 5
Dependent Claim
105 words
A recording system as claimed in claim 2, wherein the means (1) for dividing the input digital video signal into a plurality of frequency band components comprises: means (4) to convert the input digital video signal data into a plurality of blocks, each block comprising a plurality of pixels, and to transform the data in each block, whereby pixels of transformed data having similar frequencies are located in proximity to one another in the transformed block; and means (5) to divide the transformed block into regions with different frequencies such that the input digital video signal is divided in a plurality of frequency band components.
Claim 6
Dependent Claim
75 words
A reproducing system as claimed in claim 3, wherein said means (32) for performing band combination of said relayed digital video signals comprises: means to combine the relayed digital video signals to form blocks of data comprising a plurality of pixels, in which pixels of data having similar frequencies are located in proximity to one another in a block; and means (36) to transform the data in each block to generate reproduced digital video signals.
Claim 7
Dependent Claim
172 words
A recording/reproducing system as claimed in claim 4, wherein the means (1) for dividing the input digital video signal into a plurality of frequency band components comprises: means (4) to convert the input digital video signal data into a plurality of blocks, each block comprising a plurality of pixels, and to transform the data in each block, whereby pixels of transformed data having similar frequencies are located in proximity to one another in the transformed block; and means (5) to divide the transformed block into regions with different frequencies such that the input digital video signal is divided in a plurality of frequency band components; and said means (32) for performing band combination of said relayed digital video signals comprises: means to combine the relayed digital video signals to form blocks of data comprising a plurality of pixels, in which pixels of data having similar frequencies are located in proximity to one another in a block; and means (36) to transform the data in each block to generate reproduced digital video signals.
References Cited (Backward Citations)
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