Patent EP0488326A2 successfully refreshed from Google Patents.
EP0488326A2
Expired / Lapsed
EP
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Method for driving a plasma display panel
Assignee: NEC Corp
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Filing: 1991-11-28
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Granted: —
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Expires: 2011-11-28
Abstract
Abstract In a method for driving a plasma display panel, one field time is divided to a plurality of sub-field times having different light emitting times each other. At least one of the sub-field time is longer than others to have a light emitting time longer than the other sub-field times. In each sub-field time, a state is selected from a light emission state and a non-light emission state to provide a predetermined gradation of an image to be displayed without decreasing light efficiency.
Inventors
- 👤 Yoshio Sano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:31
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/2007; G09G3/2018; G09G3/2022; G09G3/22; G09G3/28; G09G3/288; G09G3/291; G09G3/294; G09G3/2944; H; H04; H04N; H04N3/00; H04N3/10; H04N3/12; H04N3/125; G09G3/292; G09G3/2922; G09G3/293; G09G3/298; G09G3/299
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A method for driving a plasma display panel, comprising the steps of: dividing a field time to a plurality of sub-field times each having a different light emitting time from others, at least one of said sub-field times being longer than others to have a light emitting time longer than said others; selecting a condition from light emitting and non-light emitting conditions at each light emitting time of each sub-field time to provide a predetermined gradation to an image to be displayed; and scanning one field by supplying scanning pulses to a plurality of scanning electrodes in accordance with said condition selected by said predetermined gradation.
Claim 2
Dependent Claim
53 words
A method for driving a plasma display panel, according to claim 1, wherein: said dividing step comprises dividing a field time to a plurality of sub-field times in which the first sub-field time has the longest time period to provide the longest light emitting time being twice as long as other sub-field times.
Claim 3
Dependent Claim
65 words
A method for driving a plasma display panel, according to claim 1, wherein: said dividing step comprises dividing a field time to a plurality of sub-field times in which the first and second sub-field times have the first and second longest time periods to provide the first and second longest light emitting times being four and two times as long as other sub-field times, respectively.
Claim 4
Dependent Claim
100 words
A method for driving a plasma display panel, according to claim 1, further comprising the steps of: supplying a number (n) of scanning pulses to said number (n) of scanning electrodes at different timings in an interval of maintaining pulses, said maintaining pulses being supplied to said scanning electrodes with a predetermined time interval, each scanning pulse being supplied to each scanning electrode, respectively; and supplying said number (n) of extinguishing pulses to said number (n) of said scanning electrodes at the same timing in an interval of said maintaining pulses, said extinguishing pulses being supplied to cease light emission.
References Cited (Backward Citations)
No citation records indexed.
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