US4766496A
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US
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Video signal memories
Assignee: Sony Corp
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Filing: 1985-09-17
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Granted: 1988-08-23
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Expires: 2005-09-17
Abstract
Abstract A video signal memory which may, for example, form a field memory in a special effects equipment of a high definition video system, provides storage for n 2 m video data words and has n 2 memory modules each capable of storing m video data words corresponding respectively to sample values at respective sample positions of a raster display, each memory module being arranged to store one only of the video data words in any square of n by n sample positions of the raster in any one write cycle, and means to write up to n video data words corresponding to n adjacent collinear sample positions of the raster in the video memory in any one write cycle.
Inventors
- 👤 David J. Hedley
- 👤 Morgan W. A. David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/12; G11C7/00; H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/76; H04N5/907
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A video signal memory for storing n 2 m video data words, comprising: n 2 memory modules each capable of storing m said video data words corresponding respectively to sample values at respective sample positions of a raster display, each said memory module being arranged to store one only of said video data words in any square of n by n said sample positions of said raster in any one write cycle; and means to write up to n said video data words corresponding to n adjacent sample positions of said raster in said video memory in any one write cycle, said sample positions forming a line that may extend in any of a plurality of directions including a diagonal direction.
Claim 2
Dependent Claim
121 words
A video signal memory for storing n 2 m video data words, comprising: n 2 memory modules each capable of storing m said video data words corresponding respectively to sample values at respective sample positions of a raster display, each said memory module being arranged to store one only of said video data words in any square of n by n said sample positions of said raster in any one write cycle; and means to write up to n said video data words corresponding to n adjacent sample positions of said raster in said video memory in any one write cycle, said sample positions forming a line that may extend in any of a plurality of directions including a diagonal direction.
Claim 3
Dependent Claim
18 words
A video signal memory according to claim 1 wherein each said memory module is a random access memory.
Claim 4
Dependent Claim
14 words
A video signal memory according to claim 1 wherein n is equal to eight.
Claim 5
Dependent Claim
23 words
A video signal memory according to claim 1 for use in a high definition video system and wherein m is equal to 16K.
Claim 6
Dependent Claim
21 words
A video signal memory according to claim 1 forming part of a special effects equipment in a high definition video system.
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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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |