Invention Grant
- Patent Title: Brightness modulation system for a plasma display device
- Patent Title (中): 用于等离子体显示装置的亮度调制系统
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Application No.: US31994172Application Date: 1972-12-29
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Publication No.: US3886403APublication Date: 1975-05-27
- Inventor: OWAKI KENICHI , UMEDA SHOZO , FURUTA HIROSHI , HIROSE TADATSUGU , SHIMUZI MICHIHIRO
- Applicant: FUJITSU LTD
- Assignee: Fujitsu Ltd
- Current Assignee: Fujitsu Ltd
- Priority: JP146472 1971-12-30
- Main IPC: H04N5/66
- IPC: H04N5/66 ; G09G3/20 ; G09G3/28 ; G09G3/282 ; H04N3/12 ; H05B37/00
Abstract:
A brightness modulation system for a plasma display panel device in which one picture element is made up of a plurality of discharge cells, the brightness levels of the plurality of discharge cells are made different from each other by impression of voltages of different phases or repetitive frequencies and the discharge cells are selectively combined, thereby to achieve a display composed of a plurality of graded tones.
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