US3909804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of driving a matrix panel with only two types of pulses
Assignee: Hitachi Ltd
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Filing: 1974-02-22
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Granted: 1975-09-30
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Expires: 1994-02-22
Abstract
Abstract A method of driving a matrix panel composed of photo elements connected to the intersections of lateral and longitudinal electrodes in which, when one of the photo elements is addressed, a firing trigger pulse is applied to the lateral electrode to which the specific photo element is connected, and an erasing trigger pulse is applied to the corresponding longitudinal line for placing the specific photo element in the erased state.
Inventors
- 👤 Tetsunori Kaji
- 👤 Masashi Mizushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:54
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; H; H04; H04N; H04N3/00; H04N3/10; H04N3/12; H04N3/125; G09G2310/00; G09G2310/02; G09G2310/0264; G09G2310/0267; G09G2310/0275; G09G2310/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements having an information storing function connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said application of said first pulse maintaining each of the photoelements addressed by said first electrode applied with said first pulse in the state before being addressed; and b. applying a second pulse to one of said second electrodes in synchronims with said application of said first pulse, said synchronous application of said first and second pulses placing a photo element connected to said first and second electrodes respectively applied with said first and second pulses in the fired state, the application of said second pulse alone placing a photo element connected to said second electrode applied with said second pulse in the erased state.
Claim 2
Independent Claim
168 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements having an information storing function connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said application of said first pulse maintaining each of the photoelements addressed by said first electrode applied with said first pulse in the state before being addressed; and b. applying a second pulse to one of said second electrodes in synchronims with said application of said first pulse, said synchronous application of said first and second pulses placing a photo element connected to said first and second electrodes respectively applied with said first and second pulses in the fired state, the application of said second pulse alone placing a photo element connected to said second electrode applied with said second pulse in the erased state.
Claim 3
Dependent Claim
52 words
A method for the line sequential driving of a matrix panel according to claim 1, wherein at least one of said first and second pulses which is superposed on a holding voltage is applied, and the application of said holding voltage alone maintains a photo element in the state before being addressed.
Claim 4
Independent Claim
169 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements having an information storing function connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said application of said first pulse maintaining each of the photo elements addressed by said first electrode applied with said first pulse in the state before being addressed; and b. applying a second pulse to one of said second electrodes in synchromism with said application of said first pulse, said synchronous application of said first and second pulses placing a photo element connected to said first and second electrodes respectively applied with said first and second pulses in the erased state, the application of said second pulse alone placing a photo element connected to said second electrode applied with said second pulse in the fired state.
Claim 5
Independent Claim
169 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements having an information storing function connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said application of said first pulse maintaining each of the photo elements addressed by said first electrode applied with said first pulse in the state before being addressed; and b. applying a second pulse to one of said second electrodes in synchromism with said application of said first pulse, said synchronous application of said first and second pulses placing a photo element connected to said first and second electrodes respectively applied with said first and second pulses in the erased state, the application of said second pulse alone placing a photo element connected to said second electrode applied with said second pulse in the fired state.
Claim 6
Dependent Claim
52 words
A method for the line sequential driving of a matrix panel according to claim 3, wherein at least one of said first and second pulses which is superposed on a holding voltage is applied, and the application of said holding voltage alone maintains a photo element in the state before being addressed.
Claim 7
Independent Claim
187 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements, having an information storing function, connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said first pulse having a magnitude sufficient to maintain each of the thus addressed photo elements connected thereto in their respective states prior to being addressed; and b. applying a second pulse to a selected one of said second electrodes in synchronism with the application of said first pulse in step (a), said second pulse having a magnitude sufficient to both - (i) place a photo element connected to said first and second electrodes in the fired state upon the synchronous application of said first and second pulses, to said first and second electrodes, respectively, and (ii) place a photo element connected to said first and second electrodes in the erased state upon the application of only said second pulse to said second electrode.
Claim 8
Independent Claim
187 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements, having an information storing function, connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said first pulse having a magnitude sufficient to maintain each of the thus addressed photo elements connected thereto in their respective states prior to being addressed; and b. applying a second pulse to a selected one of said second electrodes in synchronism with the application of said first pulse in step (a), said second pulse having a magnitude sufficient to both - (i) place a photo element connected to said first and second electrodes in the fired state upon the synchronous application of said first and second pulses, to said first and second electrodes, respectively, and (ii) place a photo element connected to said first and second electrodes in the erased state upon the application of only said second pulse to said second electrode.
Claim 9
Dependent Claim
60 words
A method for the line sequential driving of a matrix panel according to claim 5, wherein at least one of said steps (a) and (b) includes the step of superimposing at least one of said pulses on a holding voltage, the magnitude of which holding voltage is sufficient to maintain a photo element in its state prior to being addressed.
Claim 10
Dependent Claim
54 words
A method for the line sequential driving of a matrix panel according to claim 5, wherein each of said steps (a) and (b) includes the step of superimposing said pulses on a holding voltage, the magnitude of which holding voltage is sufficient to maintain a photo element in its state prior to being addressed.
Claim 11
Independent Claim
187 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements, having an information storing function, connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said first pulse having a magnitude sufficient to maintain each of the thus addressed photo elements connected thereto in their respective states prior to being addressed; and b. applying a second pulse to a selected one of said second electrodes in synchronism with the application of said first pulse in step (a), said second pulse having a magnitude sufficient to both - (i) place a photo element connected to said first and second electrodes in the erased state upon the synchronous application of said first and second pulses to said first and second electrodes, respectively, and (ii) place a photo element connected to said first and second electrodes in the fired state upon the application of only said second pulse to said second electrode.
Claim 12
Independent Claim
187 words
A method for the line sequential driving of a matrix panel composed of a plurality of first and second electrodes intersecting one another, and a plurality of photo elements, having an information storing function, connected to the individual intersections of said first and second electrodes, comprising the steps of: a. applying a first pulse to each of addressed ones of said first electrodes, said first pulse having a magnitude sufficient to maintain each of the thus addressed photo elements connected thereto in their respective states prior to being addressed; and b. applying a second pulse to a selected one of said second electrodes in synchronism with the application of said first pulse in step (a), said second pulse having a magnitude sufficient to both - (i) place a photo element connected to said first and second electrodes in the erased state upon the synchronous application of said first and second pulses to said first and second electrodes, respectively, and (ii) place a photo element connected to said first and second electrodes in the fired state upon the application of only said second pulse to said second electrode.
Claim 13
Dependent Claim
59 words
A method for the line sequential driving of a matrix panel according to claim 8, wherein at least one of steps (a) and (b) includes the step of superimposing at least one of said pulses on a holding voltage the magnitude of which holding voltage is sufficient to maintain a photo element in its state prior to being addressed.
Claim 14
Dependent Claim
53 words
A method for the line sequential driving of a matrix panel according to claim 8, wherein each of steps (a) and (b) includes the step of superimposing said pulses on a holding voltage, the magnitude of which holding voltage is sufficient to maintain a photo element in its state prior to being addressed.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |