US5534931A
Expired / Lapsed
US
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Encoding method and apparatus of digital video signal
Assignee: Sony Corp
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Filing: 1994-04-13
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Granted: 1996-07-09
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Expires: 2014-04-13
Abstract
Abstract A block segmenting circuit block segments a digital video signal. A block encoding circuit encodes the block segmented data. A head H records the encoded data on a tape. A block segmenting circuit varies the start address of each block and detects an error between the original data and the decoded data at each start address. A cumulating circuit camulates the errors for a predetermined time period. A detecting circuit detects the minimum value of the cumulated values. Thus, a block start address with the lowest error is determined. With a block construction defined by the start address, a block segmenting circuit perform block segmentation.
Inventors
- 👤 Tetsujiro Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:15
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/9261; H04N5/9264; G; G11; G11B; G11B27/00; G11B27/02; G11B27/031; G11B27/032; H04N19/00; H04N19/10; H04N19/102; H04N19/119; H04N19/40; H04N19/50; H04N19/503; H04N19/51; H04N19/85; H04N19/89; H04N19/90; H04N19/98; H04N7/00; H04N7/24; H04N7/52; H04N7/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
186 words
An encoding apparatus of a digital video signal, comprising: first block segmenting means for converting an input scanning-sequence digital video signal into a block-structured signal; first blocking encoding means for compressing and encoding the output of said first block segmenting means, block by block; local decoding means for decoding the output of said first block encoding means; comparing means for comparing the output of said local decoding means with the output of said first block segmenting means; varying means for varying a block start address of said first block segmenting means, the block start address corresponding to a beginning of a block; detecting means for cumulating the output of said comparing means for a predetermined time period when the block start address is varied by said varying means so as to detect the block start address with a minimum cumulated value; second block segmenting means for block segmenting the input scanning-sequence digital video signal from the beginning thereof corresponding to the block start address with the minimum cumulated value; and second block encoding means for compressing and encoding the output of said second block segmenting means.
Claim 2
Dependent Claim
186 words
An encoding apparatus of a digital video signal, comprising: first block segmenting means for converting an input scanning-sequence digital video signal into a block-structured signal; first blocking encoding means for compressing and encoding the output of said first block segmenting means, block by block; local decoding means for decoding the output of said first block encoding means; comparing means for comparing the output of said local decoding means with the output of said first block segmenting means; varying means for varying a block start address of said first block segmenting means, the block start address corresponding to a beginning of a block; detecting means for cumulating the output of said comparing means for a predetermined time period when the block start address is varied by said varying means so as to detect the block start address with a minimum cumulated value; second block segmenting means for block segmenting the input scanning-sequence digital video signal from the beginning thereof corresponding to the block start address with the minimum cumulated value; and second block encoding means for compressing and encoding the output of said second block segmenting means.
Claim 3
Dependent Claim
39 words
The encoding apparatus as set forth in claim 1, wherein the predetermined time period, for which the output of said comparing means is cumulated, is a period of first several blocks of each field of the digital video signal.
Claim 4
Dependent Claim
35 words
The encoding apparatus as set forth in claim 1, wherein the predetermined time period, for which the output of said comparing means is cumulated, is a period of each field of the digital video signal.
Claim 5
Dependent Claim
35 words
The encoding apparatus as set forth in claim 1, wherein said first block encoding means is adapted to detect a dynamic range of the block and quantize pixel data thereof corresponding to the dynamic range.
Claim 6
Dependent Claim
166 words
An encoding method for a digital video signal, comprising the steps of: converting an input scanning-sequence digital video signal into a block-structured signal in a block segmenter; compressing and encoding the block-structured signal, block by block, to produce an encoded signal; local decoding the encoded signal to produce a decoded signal; comparing the decoded signal and the block-structured signal to determine differences therebetween; varying a block start address of said block segmenter, the block start address corresponding to a beginning of a block; cumulating the differences between the decoded signal and the block-structured signal as determined in the comparing step for a predetermined time period when the block start address is varied during said varying step so as to detect the block start address with a minimum cumulated value; block segmenting the input scanning-sequence digital video signal from the beginning thereof corresponding to the block start address with the minimum cumulated value to produce a second encoded signal; and compressing and encoding the second encoded signal.
Claim 7
Dependent Claim
166 words
An encoding method for a digital video signal, comprising the steps of: converting an input scanning-sequence digital video signal into a block-structured signal in a block segmenter; compressing and encoding the block-structured signal, block by block, to produce an encoded signal; local decoding the encoded signal to produce a decoded signal; comparing the decoded signal and the block-structured signal to determine differences therebetween; varying a block start address of said block segmenter, the block start address corresponding to a beginning of a block; cumulating the differences between the decoded signal and the block-structured signal as determined in the comparing step for a predetermined time period when the block start address is varied during said varying step so as to detect the block start address with a minimum cumulated value; block segmenting the input scanning-sequence digital video signal from the beginning thereof corresponding to the block start address with the minimum cumulated value to produce a second encoded signal; and compressing and encoding the second encoded signal.
Claim 8
Dependent Claim
202 words
An encoding apparatus of a digital video signal, comprising: first block segmenting means for converting an input scanning-sequence digital video signal into a block-structured signal; first block encoding means for compressing and encoding the output of said first block segmenting means, block by block; local decoding means for decoding the output of said first block encoding means; comparing means for detecting a difference between the output of said local decoding means and the output of said first block segmenting means; varying means coupled with said first block segmenting means for varying a block start address, the block start address corresponding to a beginning of a block; cumulating means for cumulating the differences with respect to the block start address so as to determine the block start address with a minimum cumulated difference; second block segmenting means for converting the input digital video signal into the block-structured signal corresponding to the block start address with the minimum cumulated difference; second block encoding means for block encoding an output of said second block segmenting means; and delaying means for delaying an input to the second block segmenting means so as to allow the block start address with the minimum cumulated difference to be determined.
Claim 9
Dependent Claim
202 words
An encoding apparatus of a digital video signal, comprising: first block segmenting means for converting an input scanning-sequence digital video signal into a block-structured signal; first block encoding means for compressing and encoding the output of said first block segmenting means, block by block; local decoding means for decoding the output of said first block encoding means; comparing means for detecting a difference between the output of said local decoding means and the output of said first block segmenting means; varying means coupled with said first block segmenting means for varying a block start address, the block start address corresponding to a beginning of a block; cumulating means for cumulating the differences with respect to the block start address so as to determine the block start address with a minimum cumulated difference; second block segmenting means for converting the input digital video signal into the block-structured signal corresponding to the block start address with the minimum cumulated difference; second block encoding means for block encoding an output of said second block segmenting means; and delaying means for delaying an input to the second block segmenting means so as to allow the block start address with the minimum cumulated difference to be determined.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-09 | 2000-01-08 | 2000-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-09 | 2004-01-08 | 2004-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-09 | 2008-01-08 | 2008-07-09 | $7700.00 | Window Closed / Lapsed |