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Patent US4368465A successfully refreshed from Google Patents.
US4368465A
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Method of actuating a plasma display panel
Assignee: Fujitsu Ltd
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Filing: 1981-08-07
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Granted: 1983-01-11
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Expires: 2001-08-07
Abstract
Abstract A method of actuating a PDP device uses an actuating pulse signal which comprises an erasing mode for erasing data displayed on a display panel, a writing mode for writing new data on the panel and a sustaining mode for sustaining a state of displaying the data. The data to be displayed are input by an input signal which is not synchronized with the actuating pulse signal. At and before the time of changing the mode of the actuating pulse signal, at least one pulse is eliminated from the actuating pulse signal.
Inventors
- 👤 Osamu Hirakawa
- 👤 Tadatsugu Hirose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:31
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; G09G3/288; G09G3/291; G09G3/292; G09G3/2927; G09G3/294; G09G3/297; G09G5/00; G09G5/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
A method of actuating a PDP device using an actuating pulse signal having an erasing mode, a writing mode and a sustaining mode which comprises the steps of: erasing data displayed on a display panel during the erasing mode; writing new data on the panel during the writing mode; and sustaining the display of data during the sustaining mode, the data to be displayed being input by an input signal which is not synchronized with said actuating pulse signal, at least one pulse being eliminated from said actuating pulse signal prior to and during the time the mode of said actuating signal changes.
Claim 2
Independent Claim
103 words
A method of actuating a PDP device using an actuating pulse signal having an erasing mode, a writing mode and a sustaining mode which comprises the steps of: erasing data displayed on a display panel during the erasing mode; writing new data on the panel during the writing mode; and sustaining the display of data during the sustaining mode, the data to be displayed being input by an input signal which is not synchronized with said actuating pulse signal, at least one pulse being eliminated from said actuating pulse signal prior to and during the time the mode of said actuating signal changes.
Claim 3
Dependent Claim
37 words
A method of actuating a PDP device according to claim 1, wherein said at least one pulse is eliminated prior to and during the time the mode is changed from the sustaining mode to the erasing mode.
Claim 4
Dependent Claim
76 words
A method of actuating a PDP device according to claim 1, wherein the display panel comprises a plurality of rows of dots, said method further comprising the steps of providing an input signal indicating data to be displayed; and actuating each row of the display panel, independently in dependence upon the input signal, wherein each input signal comprises "1" level signals and "0" level signals one of which is applied to each dot in the row.
Claim 5
Independent Claim
149 words
A method of actuating a plasma display panel comprising the steps of: (a) providing an input signal representing data to be displayed; (b) generating an actuating pulse signal, having an erase mode, a write mode and a sustain mode, for actuating the plasma display panel, at least one pulse in said actuating pulse signal being eliminated from said actuating pulse signal prior to and during the time the mode of said actuating pulse signal changes, said actuating pulse signal not being synchronized with said input signal; (c) erasing data displayed on the plasma display panel during the erase mode of said actuating pulse signal; (d) writing new data on the plasma display panel, during the write mode of said actuating pulse signal, in dependence upon the input signal; and (e) sustaining the display of data on the plasma display panel during the sustain mode of said actuating pulse signal.
Claim 6
Independent Claim
149 words
A method of actuating a plasma display panel comprising the steps of: (a) providing an input signal representing data to be displayed; (b) generating an actuating pulse signal, having an erase mode, a write mode and a sustain mode, for actuating the plasma display panel, at least one pulse in said actuating pulse signal being eliminated from said actuating pulse signal prior to and during the time the mode of said actuating pulse signal changes, said actuating pulse signal not being synchronized with said input signal; (c) erasing data displayed on the plasma display panel during the erase mode of said actuating pulse signal; (d) writing new data on the plasma display panel, during the write mode of said actuating pulse signal, in dependence upon the input signal; and (e) sustaining the display of data on the plasma display panel during the sustain mode of said actuating pulse signal.
Claim 7
Dependent Claim
51 words
A method of actuating a plasma display panel device according to claim 4, wherein said step (b) comprises the substep of eliminating said at least one pulse from said actuating pulse signal prior to and during the time said actuating pulse signal changes from the sustain mode to the erase mode.
Claim 8
Dependent Claim
106 words
A method of actuating a plasms display panel device according to claim 4, wherein said plasma display panel comprises a pluality of rows and dots and wherein said step (a) comprises the substeps of: providing a plurality of input signals representing data to be displayed on each row of the plasma display panel; and actuating each row of the plasma display panel independently in dependence upon one of the plurality of input signals, wherein each of the plurality of input signals comprises a plurality of pulses of a first or second level, one of said plurality of pulses being applied to each dot in the row.
References Cited (Backward Citations)
US3906451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |