US5313303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspect ratio control for picture overlays
Assignee: Technicolor USA Inc
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Filing: 1991-05-30
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Granted: 1994-05-17
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Expires: 2011-05-30
Abstract
Abstract A picture overlay system assures proper image aspect ratios for picture overlays. The system comprises a video memory and a control circuit for writing and reading information from a video signal into and out of the video memory, the information relating to video data. A reading circuit supplies information from the video memory synchronously with a display for another video signal. An interpolator selectively compresses and expands the information read from the reading circuit, independently of any other processing which might vertically compress or expand said video data. A multiplexer combines the video signals for simultaneous display. The reading circuit can comprise an asynchronous line memory for the information read from the video memory, having a write port operable synchronously with the reading of the video memory and a read port operable synchronously with the display for the other video signal.
Inventors
- 👤 Nathaniel H. Ersoz
- 👤 Timothy W. Saeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0117; H04N7/0122; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/223; H04N3/27; H04N5/00; H04N5/44; H04N5/445; H04N5/45; H04N7/007; H04N7/0105; H04N9/00; H04N9/64; H04N9/641; Y; Y10; Y10S; Y10S348/00; Y10S348/913
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A display system, comprising: a video memory; means for writing and reading video data information from a first video signal into and out of said video memory; means for supplying said information from said video memory synchronously with a display means for a second video signal; and, an interpolator for selectively horizontally compressing and expanding said video data information of said first video signal read from said video memory independently of any vertical compression or expansion of said second video signal, which might also vertically compress or expand said video data information of said first video signal.
Claim 2
Dependent Claim
97 words
A display system, comprising: a video memory; means for writing and reading video data information from a first video signal into and out of said video memory; means for supplying said information from said video memory synchronously with a display means for a second video signal; and, an interpolator for selectively horizontally compressing and expanding said video data information of said first video signal read from said video memory independently of any vertical compression or expansion of said second video signal, which might also vertically compress or expand said video data information of said first video signal.
Claim 3
Dependent Claim
16 words
The system of claim 1, further comprising means for multiplexing said video signals for simultaneous display.
Claim 4
Dependent Claim
95 words
A display system comprising: a video memory; means for writing and reading video data information from a video signal into and out of said video memory; a line memory for supplying said information from said video memory, having a write port operable synchronously with said reading of said video memory and a read port operable synchronously with a display means for another video signal; and an interpolator for selectively horizontally compressing and expanding said information read from said video memory independently of any other processing which might vertically compress or expand said video data information.
Claim 5
Dependent Claim
95 words
A display system comprising: a video memory; means for writing and reading video data information from a video signal into and out of said video memory; a line memory for supplying said information from said video memory, having a write port operable synchronously with said reading of said video memory and a read port operable synchronously with a display means for another video signal; and an interpolator for selectively horizontally compressing and expanding said information read from said video memory independently of any other processing which might vertically compress or expand said video data information.
Claim 6
Dependent Claim
11 words
The system of claim 3, wherein said line memory is asynchronous.
Claim 7
Dependent Claim
16 words
The system of claim 3, further comprising means for multiplexing said video signals for simultaneous display.
Claim 8
Dependent Claim
98 words
A display system, comprising: a video memory; means for writing and reading video data information from a first video signal into and out of said video memory; means for supplying said information from said video memory synchronously with means for generating a raster for displaying a second video signal; and, an interpolator for selectively horizontally compressing and expanding said video data information of said first video signal read from said video memory independently of any vertical compression or expansion of said raster which might also vertically compress or expand said video data information of said first video signal.
Claim 9
Dependent Claim
98 words
A display system, comprising: a video memory; means for writing and reading video data information from a first video signal into and out of said video memory; means for supplying said information from said video memory synchronously with means for generating a raster for displaying a second video signal; and, an interpolator for selectively horizontally compressing and expanding said video data information of said first video signal read from said video memory independently of any vertical compression or expansion of said raster which might also vertically compress or expand said video data information of said first video signal.
Claim 10
Dependent Claim
16 words
The system of claim 6, further comprising means for multiplexing said video signals for simultaneous display.
Claim 11
Dependent Claim
13 words
The system of claim 6, wherein said supplying means comprises a line memory.
Claim 12
Dependent Claim
11 words
The system of claim 8, wherein said line memory is asynchronous.
Claim 13
Dependent Claim
13 words
The system of claim 1, wherein said supplying means comprises a line memory.
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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) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |