US5107255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for a display apparatus
Assignee: Sharp Corp
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Filing: 1989-11-13
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Granted: 1992-04-21
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Expires: 2009-11-13
Abstract
Abstract A control device for a display apparatus such as an LCD is disclosed. The control device can operate in the window display mode or in the reduced display mode. The control device copmrises: an image data string generating unit for generating a first serial image data string in synchronization with the horizontal scanning: an image data delaying unit for generating a second serial image data string in which each data is delayed from the corresponding data of said first image data string by a period of time corresponding to at least one pixel: a mask signal generator for generating a plurality of mask signals: a first operation unit for applying an OR or AND operation to the first and second iamge data strings to obtain a third image data string: a second operation means for applying an AND or OR operation to the first and second image data strings to obtain a fourth image data string: a mask signal selector for selecting mask signals from the mask signals in accordance with a desired display mode: a data image selector for selecting image data strings from the first to fourth image data strings, and producing a further image data string: and an output unit for masking the further image data string in accordance with the selected mask signals, and outputting the masked iamge data string to the display apparatus.
Inventors
- 👤 Tai Shiraishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:21
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3622; G09G3/3644; G09G3/3674; G09G3/3685; G09G5/00; G09G5/36; G09G5/39; G09G5/391; G09G2340/00; G09G2340/04; G09G2340/0407; G09G2340/0421
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
204 words
A control device for a display apparatus in which pixels are arrange in a matrix, comprising: image data string generating means for generating a first serial image data string in synchronization with the horizontal scanning of said display apparatus, said image data string generating means being connected to memory means for storing image data; image data delaying means for generating a second serial image data string in which each data is delayed from the corresponding data of said first image data string by a period of time corresponding to at least one pixels; mask signal generating means for generating a plurality of mask signals; first operation means for applying a first operation to said first and second image data strings to obtain a third image data string; mask signal selecting means for selecting one or more mask signals from said mask signals in accordance with a desired display mode; data image selecting means for selecting one or more image data strings from said first to third image data strings, and producing a further iamge data string; and output means for masking said further image data string in accordance with said selected mask signals, and outputting said masked image data string to said display apparatus.
Claim 2
Dependent Claim
204 words
A control device for a display apparatus in which pixels are arrange in a matrix, comprising: image data string generating means for generating a first serial image data string in synchronization with the horizontal scanning of said display apparatus, said image data string generating means being connected to memory means for storing image data; image data delaying means for generating a second serial image data string in which each data is delayed from the corresponding data of said first image data string by a period of time corresponding to at least one pixels; mask signal generating means for generating a plurality of mask signals; first operation means for applying a first operation to said first and second image data strings to obtain a third image data string; mask signal selecting means for selecting one or more mask signals from said mask signals in accordance with a desired display mode; data image selecting means for selecting one or more image data strings from said first to third image data strings, and producing a further iamge data string; and output means for masking said further image data string in accordance with said selected mask signals, and outputting said masked image data string to said display apparatus.
Claim 3
Dependent Claim
14 words
A device according to claim 1 wherein said first operation is an OR operation.
Claim 4
Dependent Claim
14 words
A device according to claim 1 wherein said first operation is an AND operation.
Claim 5
Dependent Claim
227 words
A control device for a display apparatus in which pixels are arranged in a matrix, comprising: image data string generating means for generating a first serial image data string in synchronization with the horizontal scanning of said display apparatus, said image data string generating means being connected to memory mean for storing image data; image data delaying means for generating a second serial image data string in which each data is delayed from the corresponding data of said first image data string by a period of time corresponding to at least one pixel; mask signal generating means for generating a plurality of mask signals; first operation means for applying a first operation to said first and second image data strings to obtain a third image data string; second operation means for applying a second operation to said first and second image data strings to obtain a fourth image data string; mask signal selecting means for selecting one or more mask signals from said mask signals in accordance with a desired display mode; data image selecting means for selecting one or more image data strings from said first to fourth image data strings, and producing a further image data string; and output means for masking said further image data string in accordance with said selected mask signals, and outputting said masked image data string to said display apparatus.
Claim 6
Dependent Claim
227 words
A control device for a display apparatus in which pixels are arranged in a matrix, comprising: image data string generating means for generating a first serial image data string in synchronization with the horizontal scanning of said display apparatus, said image data string generating means being connected to memory mean for storing image data; image data delaying means for generating a second serial image data string in which each data is delayed from the corresponding data of said first image data string by a period of time corresponding to at least one pixel; mask signal generating means for generating a plurality of mask signals; first operation means for applying a first operation to said first and second image data strings to obtain a third image data string; second operation means for applying a second operation to said first and second image data strings to obtain a fourth image data string; mask signal selecting means for selecting one or more mask signals from said mask signals in accordance with a desired display mode; data image selecting means for selecting one or more image data strings from said first to fourth image data strings, and producing a further image data string; and output means for masking said further image data string in accordance with said selected mask signals, and outputting said masked image data string to said display apparatus.
Claim 7
Dependent Claim
14 words
A device according to claim 4 wherein said first operation is an OR operation.
Claim 8
Dependent Claim
14 words
A device according to claim 4 wherein said second operation is an AND operation.
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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) | 1995-04-21 | 1995-10-21 | 1996-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-21 | 1999-10-21 | 2000-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-21 | 2003-10-21 | 2004-04-21 | $7700.00 | Window Closed / Lapsed |