EP0540294A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Display control device and display apparatus with display control device
Assignee: Canon Inc
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Filing: 1992-10-27
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Granted: —
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Expires: 2012-10-27
Abstract
Abstract Even when the number of horizontal physical display picture elements of a display device considerably exceeds the number of picture elements obtained by multiplying the number of horizontal display picture elements of picture element data with 2 n within a range of the number of horizontal physical display picture elements, an optimal horizontal display size can be presented without impairing display quality. A display control device for receiving display image data transfer dot clocks (DOTCLK) and image data synchronous with the dot clocks, and displaying the image data as an image on a display device having matrix electrodes, includes a dot clock thin-out section (200) for thinning-out the dot clocks from an arbitrary position at an arbitrary period, and an output controller (150, 250) for re-arranging image data synchronous with the thin-out dot clocks as image data for the display device.
Inventors
- 👤 Osamu c/o Canon Kabushiki Kaisha Yuki
- 👤 Hiroshi C/O Canon Kabushiki Kaisha Inoue
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:15
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/003; G09G5/005; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G2310/00; G09G2310/02; G09G2310/0202; G09G2310/0205; G09G2310/0232; G09G2320/00; G09G2320/04; G09G2320/041; G09G2320/10; G09G2340/00; G09G2340/04; G09G2340/0407; G09G2340/0414; G09G2340/0421; G09G2340/0464; G09G2340/0471; G09G2340/0478; G09G2340/0485; G09G2360/00; G09G2360/02; G09G3/2007; G09G5/18
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
57 words
A display control device for receiving display image data transfer dot clocks, and image data synchronized with the dot clocks, and displaying the image data as an image on a display apparatus having matrix electrodes, comprising means for performing a display on a display screen in an arbitrary horizontal display size by thinning out the dot clocks.
Claim 2
Dependent Claim
28 words
A device according to claim 1, further comprising means for displaying image data by enlarging the image data synchronous with the thin-out dot clocks to x2 n .
Claim 3
Dependent Claim
23 words
A device according to claim 1, further comprising means for setting a thin-out start position and a thin-out interval of the image data.
Claim 4
Dependent Claim
21 words
A device according to claim 1, further comprising means capable of arbitrarily changing sizes of horizontal and vertical border display regions.
Claim 5
Dependent Claim
105 words
A display apparatus comprising: display means having a plurality of substrates on each of which a plurality of electrodes are arranged parallel to or substantially parallel to each other, said substrates being arranged to oppose each other so that said electrodes extend orthogonally with each other, and a liquid crystal material sealed between said substrates; a display control device which receives image data transfer clocks, and image data synchronous with the transfer clocks, and has thin-out means for thinning out the input image data transfer clocks; and a controller for receiving signals from said display control device, and performing a display on said display means.
Claim 6
Dependent Claim
29 words
An apparatus according to claim 5, wherein the image data transfer clocks are thinned out to perform a display on a display screen in an arbitrary horizontal display size.
Claim 7
Dependent Claim
33 words
An apparatus according to claim 5, wherein said display control device further comprises means for displaying image data by enlarging the image data synchronous with the thin-out dot clocks to x2 n .
Claim 8
Dependent Claim
28 words
An apparatus according to claim 5, wherein said display control device further comprises means for setting a thin-out start position and a thin-out interval of the image data.
Claim 9
Dependent Claim
26 words
An apparatus according to claim 5, wherein said display control device further comprises means capable of arbitrarily changing sizes of horizontal and vertical border display regions.
Claim 10
Dependent Claim
17 words
An apparatus according to claim 5, wherein said liquid crystal material is a ferroelectric liquid crystal material.
Claim 11
Dependent Claim
29 words
An apparatus according to claim 5, wherein said display control device re-arranges the image data synchronous with the thin-out image data transfer clocks as data for said display means.
Claim 12
Dependent Claim
124 words
A display data processing device for receiving display data in pixel form and modifying the display data to fit more closely a predetermined size of display device, the display data processing device comprising: display size increasing means (150) for increasing the number of pixels in the display data by a selected one of a plurality of preset proportions; and display size reducing means (200) for reducing the number of pixels in the display data by a selected proportion, the said proportions selected for the display size increasing means and the display size reducing means on a given occasion being selected in view of the size, in number of pixels, of the image defined by the display data and the predetermined size of display device.
Claim 13
Dependent Claim
30 words
A display data processing device according to claim 12 in which the plurality of preset proportions of the display size increasing means (150) comprise linear increases by powers of 2.
Claim 14
Dependent Claim
27 words
A display data processing device according to claim 12 or claim 13 in which the display size reducing means (200) thins a pixel clock of pixel-form data.
References Cited (Backward Citations)
No citation records indexed.
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