EP0519744A2
Expired / Lapsed
EP
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Display control apparatus and display device
Assignee: Canon Inc
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Filing: 1992-06-19
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Granted: —
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Expires: 2012-06-19
Abstract
Abstract A display control apparatus which is combined with a display device having a ferroelectric liquid crystal element having a bistable state for an electric field between two insulating substrates having scan and information electrodes and which includes a unit for converting a continuous CRT analog primary color signal into an area gradation signal of the display device, includes a unit for arbitrarily selecting a conversion period of a digital signal with respect to a transfer period of the analog image data to interpolate or thin the image data.
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 21:53
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/003; G09G5/005; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3622; G09G3/3629; G09G2310/00; G09G2310/02; G09G2310/0232; G09G2340/00; G09G2340/04; G09G2340/0407; G09G2340/0414; G09G2340/0421; G09G2340/0464; G09G2340/0471; G09G2340/0478; G09G2360/00; G09G2360/02; G09G3/2007; G09G3/2074; G09G5/006
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
45 words
A display control apparatus comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; and b. second means for controlling said first means so that the analog primary color signal is thinned and converted into a digital signal.
Claim 2
Dependent Claim
45 words
A display control apparatus comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; and b. second means for controlling said first means so that the analog primary color signal is interpolated and converted into a digital signal.
Claim 3
Dependent Claim
41 words
A display control apparatus comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; and b. second means for selecting a period of conversion of the analog primary color signal into a digital signal.
Claim 4
Dependent Claim
51 words
A display control apparatus comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; and b. second means for controlling said first means so that the analog primary color signal is thinned and converted into a digital signal corresponding to gradation.
Claim 5
Dependent Claim
51 words
A display control apparatus comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; and b. second means for controlling said first means so that the analog primary color signal is interpolated and converted into a digital signal corresponding to gradation.
Claim 6
Dependent Claim
44 words
A display control apparatus comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; and b. second means for selecting a period of conversion of the analog primary color signal into a digital signal.
Claim 7
Dependent Claim
60 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; b. second means for controlling said first means so that the analog primary color signal is thinned and converted into a digital signal; and c. display means for displaying an image in response to an input of the digital signal.
Claim 8
Dependent Claim
16 words
A device according to claim 7, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 9
Dependent Claim
60 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; b. second means for controlling said first means so that the analog primary color signal is interpolated and converted into a digital signal; and c. display means for displaying an image in response to an input of the digital signal.
Claim 10
Dependent Claim
16 words
A device according to claim 9, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 11
Dependent Claim
66 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; b. second means for controlling said first means so that the analog primary color signal is interpolated and converted into a digital signal corresponding to gradation; and c. display means for displaying an image in response to an input of the digital signal.
Claim 12
Dependent Claim
16 words
A device according to claim 11, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 13
Dependent Claim
59 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; b. second means for selecting a period of conversion of the analog primary color signal into a digital signal; and c. display means for displaying an image in response to an input of the digital signal.
Claim 14
Dependent Claim
16 words
A device according to claim 13, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 15
Dependent Claim
56 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; b. second means for selecting a period of conversion of the analog primary color signal into a digital signal; and c. display means for displaying an image in response to an input of the digital signal.
Claim 16
Dependent Claim
16 words
A device according to claim 15, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 17
Dependent Claim
66 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; b. second means for controlling said first means so that the analog primary color signal is thinned and converted into a digital signal corresponding to gradation; and c. display means for displaying an image in response to an input of the digital signal.
Claim 18
Dependent Claim
16 words
A device according to claim 17, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 19
Dependent Claim
77 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; b. second means for controlling said first means so that the analog primary color signal is thinned and converted into a digital signal; c. display means for displaying an image in response to an input of the digital signal; and d. third means for controlling said display means so that a boarder of the image is processed.
Claim 20
Dependent Claim
16 words
A device according to claim 19, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 21
Dependent Claim
77 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; b. second means for controlling said first means so that the analog primary color signal is interpolated and converted into a digital signal; c. display means for displaying an image in response to an input of the digital signal; and d. third means for controlling said display means so that a boarder of the image is processed.
Claim 22
Dependent Claim
16 words
A device according to claim 21, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 23
Dependent Claim
73 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal; b. second means for selecting a period of conversion of the analog primary color signal into a digital signal; c. display means for displaying an image in response to an input of the digital signal; and d. third means for controlling said display means so that a boarder of the image is processed.
Claim 24
Dependent Claim
16 words
A device according to claim 23, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 25
Dependent Claim
83 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; b. second means for controlling said first means so that the analog primary color signal is thinned and converted into a digital signal corresponding to gradation; c. display means for displaying an image in response to an input of the digital signal; and d. third means for controlling said display means so that a boarder of the image is processed.
Claim 26
Dependent Claim
16 words
A device according to claim 25, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 27
Dependent Claim
83 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; b. second means for controlling said first means so that the analog primary color signal is interpolated and converted into a digital signal corresponding to gradation; c. display means for displaying an image in response to an input of the digital signal; and d. third means for controlling said display means so that a boarder of the image is processed.
Claim 28
Dependent Claim
16 words
A device according to claim 27, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 29
Dependent Claim
76 words
A display device comprising: a. first means for converting a continuous system analog primary color signal into a digital signal corresponding to gradation; b. second means for selecting a period of conversion of the analog primary color signal into a digital signal; c. display means for displaying an image in response to an input of the digital signal; and d. third means for controlling said display means so that a boarder of the image is processed.
Claim 30
Dependent Claim
16 words
A device according to claim 29, wherein said display means comprises a ferroelectric liquid crystal panel.
Claim 31
Dependent Claim
39 words
A liquid crystal display device arranged to receive an analog video signal, characterised by means for converting said video signal into an area gradation signal and means for selectively controlling the relatiohship between video sample duration and pixel area.
References Cited (Backward Citations)
No citation records indexed.
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