US4278974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving system of display
Assignee: Seiko Instruments Inc
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Filing: 1979-03-27
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Granted: 1981-07-14
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Expires: 1999-03-27
Abstract
Abstract A driving system for matrix display device having X electrodes and Y electrodes for displaying at selected crossing points of the electrodes is provided with a timing signal generator for controlling the X electrode scanning signals, a display signal converter receptive of a portion of display information addressed by a signal from the time signal generator for converting the display information into a portion of the signals for display. A memory device stores the portion of the signals for display and applies the same to the driving circuit for the Y electrodes. The drive to the Y electrodes is inhibited while information to be stored is being stored in the memory.
Inventors
- 👤 Kenichi Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3685; G09G3/3692; G04; G04G; G04G9/00; G04G9/08; G04G9/12; G04G9/122; G09G3/04; G09G3/16; G09G3/18; G09G3/3622; G09G3/3674; G09G3/3681; G09G3/3696
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
An apparatus comprising: a matrix display device with X electrodes and Y electrodes arranged in point-like displays at selected crossing points of the X and Y electrodes; and a display device driving system comprising timing signal generating means for controlling the X electrode scanning signals, display signal converter means receptive of a portion of the display information addressed by said timing signal generating means for converting the display information into a portion of the signals for display, a driving circuit for the Y electrodes, memory means for storing the portion of the signals for display for applying to the driving circuit for the Y electrodes, and means controlled by said timing signal generating means for inhibiting the drive to the Y electrodes while information to be stored is being stored in the memory means.
Claim 2
Independent Claim
134 words
An apparatus comprising: a matrix display device with X electrodes and Y electrodes arranged in point-like displays at selected crossing points of the X and Y electrodes; and a display device driving system comprising timing signal generating means for controlling the X electrode scanning signals, display signal converter means receptive of a portion of the display information addressed by said timing signal generating means for converting the display information into a portion of the signals for display, a driving circuit for the Y electrodes, memory means for storing the portion of the signals for display for applying to the driving circuit for the Y electrodes, and means controlled by said timing signal generating means for inhibiting the drive to the Y electrodes while information to be stored is being stored in the memory means.
Claim 3
Dependent Claim
38 words
An apparatus as claimed in claim 1; wherein the generating means produces a transfer time signal whose duration is equal to the transfer time and the inhibiting means is receptive of the transfer time signal for effecting inhibition.
Claim 4
Dependent Claim
36 words
An apparatus as claimed in claim 1; wherein the display signal converter means comprises a decoder and switching means for applying the output of the decoder for display to a predetermined portion of the memory means.
Claim 5
Dependent Claim
14 words
An apparatus as claimed in claim 1; wherein the memory means comprises latching circuits.
Claim 6
Dependent Claim
129 words
A driving system for a matrix display device having X electrodes and Y electrodes, the system comprising: an X-electrode driving circuit; an actuatable Y-electrode driving circuit; means for applying display data to the Y-electrode driving circuit comprising a single memory for storing the display data and having the outputs thereof connected to the inputs of the Y-electrode driving circuit, and a multiplexer for feeding the display data into the memory; and timing signal generating means for effecting the loading of data into the memory during a predetermined transfer time and inhibiting the Y-electrode driving circuit during said transfer time and for effecting the driving of the Y-electrodes by the Y-electrode driving circuit and the simultaneous scanning of the X electrodes by the X-electrode driving circuit after the transfer time.
Claim 7
Dependent Claim
129 words
A driving system for a matrix display device having X electrodes and Y electrodes, the system comprising: an X-electrode driving circuit; an actuatable Y-electrode driving circuit; means for applying display data to the Y-electrode driving circuit comprising a single memory for storing the display data and having the outputs thereof connected to the inputs of the Y-electrode driving circuit, and a multiplexer for feeding the display data into the memory; and timing signal generating means for effecting the loading of data into the memory during a predetermined transfer time and inhibiting the Y-electrode driving circuit during said transfer time and for effecting the driving of the Y-electrodes by the Y-electrode driving circuit and the simultaneous scanning of the X electrodes by the X-electrode driving circuit after the transfer time.
Claim 8
Dependent Claim
12 words
The system according to claim 5; wherein the memory comprises latching circuits.
Claim 9
Dependent Claim
31 words
The system according to claim 5; wherein the timing signal generating means produces a transfer signal having the duration of the transfer time for effecting inhibition of the Y-electrode driving circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |