US5883608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverted signal generation circuit for display device, and display apparatus using the same
Assignee: Canon Inc
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Filing: 1995-12-27
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Granted: 1999-03-16
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Expires: 2015-12-27
Abstract
Abstract A signal generation circuit for driving a display device, comprises capacitance unit having a first terminal serving as an input terminal of an information signal, and a second terminal, first switch unit for connecting the second terminal of the capacitance means to a first reference potential source, second switch for connecting the first terminal to a second reference potential source, first signal read-out unit for reading out a signal from the first terminal while the second terminal is connected to the first reference potential source, and second signal read-out unit for reading out a signal from the second terminal while the first terminal is connected to the second reference potential source.
Inventors
- 👤 Seiji Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:32
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3614; G09G3/3685; G09G3/3688; G09G2310/00; G09G2310/02; G09G2310/0264; G09G2310/0289; G09G2310/0297; G09G3/2007; G09G3/2011
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
A signal generation circuit for driving a display device, comprising: capacitance means having a first terminal serving as an input terminal of an information signal, and a second terminal; first switch means for connecting the second terminal of said capacitance means to a first reference potential source; second switch means for connecting the first terminal to a second reference potential source; first signal read-out means for reading out a signal from the first terminal while the second terminal is connected to the first reference potential source; and second signal read-out means for reading out a signal from the second terminal while the first terminal is connected to the second reference potential source.
Claim 2
Dependent Claim
112 words
A signal generation circuit for driving a display device, comprising: capacitance means having a first terminal serving as an input terminal of an information signal, and a second terminal; first switch means for connecting the second terminal of said capacitance means to a first reference potential source; second switch means for connecting the first terminal to a second reference potential source; first signal read-out means for reading out a signal from the first terminal while the second terminal is connected to the first reference potential source; and second signal read-out means for reading out a signal from the second terminal while the first terminal is connected to the second reference potential source.
Claim 3
Dependent Claim
29 words
A circuit according to claim 1, wherein said first and second signal read-out means alternately read out signals appearing at the first and second terminals at an arbitrary period.
Claim 4
Dependent Claim
35 words
A circuit according to claim 1, wherein a plurality of units each including said capacitance means and said first and second read-out means are arranged in correspondence with a plurality of sources of video signals.
Claim 5
Dependent Claim
30 words
A circuit according to claim 1, wherein a signal is alternately read out by said first and second signal read-out means based on a signal stored in said capacitance means.
Claim 6
Dependent Claim
52 words
A display apparatus comprising a signal generation circuit of claim 1, wherein a pixel signal read out by said first and second signal read-out means of said signal generation circuit is transferred to pixels of a display device, and a display corresponding to the pixel signal is made on the display device.
Claim 7
Dependent Claim
17 words
A display apparatus having an active matrix substrate on which a circuit of claim 1 is formed.
Claim 8
Dependent Claim
68 words
A signal generation circuit for driving a display device, comprising: capacitance means having a first terminal and a second terminal; a first signal read-out means for reading out a signal from the first terminal based on a signal stored in said capacitance means and a second signal read-out means for reading out an inverted signal from the second terminal based on said signal stored in said capacitance means.
Claim 9
Dependent Claim
68 words
A signal generation circuit for driving a display device, comprising: capacitance means having a first terminal and a second terminal; a first signal read-out means for reading out a signal from the first terminal based on a signal stored in said capacitance means and a second signal read-out means for reading out an inverted signal from the second terminal based on said signal stored in said capacitance means.
Claim 10
Dependent Claim
15 words
A circuit according to claim 7, wherein the voltage of said inverted signal is shifted.
Claim 11
Dependent Claim
26 words
A circuit according to claim 7, wherein at least one of said first signal read-out means and said second signal read-out means comprises a buffer amplifier.
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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) | 2002-03-15 | 2002-09-14 | 2003-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-15 | 2006-09-14 | 2007-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-15 | 2010-09-14 | 2011-03-16 | $7700.00 | Window Closed / Lapsed |