Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-03-20
2007-03-20
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S087000, C345S099000, C345S204000, C348S536000
Reexamination Certificate
active
09760883
ABSTRACT:
A display apparatus has a clock generating circuit, a drive waveform generating circuit, and a display panel. The drive waveform generating circuit is used to generate a drive waveform by using a clock from the clock generating circuit, and the display panel is used to display an image in accordance with the drive waveform. The clock generating circuit generates a clock whose frequency varies continuously. The drive waveform generating circuit drives the display panel by outputting a drive waveform whose frequency varies in accordance with the frequency varying clock so as to spread out noise that the display panel emits. Therefore, peak values of the noise can be reduced.
REFERENCES:
patent: 3889225 (1975-06-01), McKenzie et al.
patent: 3906482 (1975-09-01), Morrison
patent: 4305091 (1981-12-01), Cooper
patent: 4715688 (1987-12-01), Harada et al.
patent: 5206729 (1993-04-01), Nakata et al.
patent: 5610955 (1997-03-01), Bland
patent: 5699005 (1997-12-01), Menkhoff et al.
patent: 5748165 (1998-05-01), Kubota et al.
patent: 5757338 (1998-05-01), Bassetti et al.
patent: 5917461 (1999-06-01), Sakami et al.
patent: 5995076 (1999-11-01), Tsuboyama et al.
patent: 6037917 (2000-03-01), Kawakami
patent: 6076171 (2000-06-01), Kawata
patent: 6130420 (2000-10-01), Tanaka et al.
patent: 6295042 (2001-09-01), Aoki
patent: 6339422 (2002-01-01), Kuwajima et al.
patent: 6397343 (2002-05-01), Williams et al.
patent: 6518943 (2003-02-01), Masumura
patent: 0163313 (1985-12-01), None
patent: 0416423 (1991-03-01), None
patent: DE 19633013 (1998-02-01), None
patent: 0969660 (2000-01-01), None
patent: 2020075 (1979-11-01), None
patent: 10-149136 (1998-06-01), None
patent: 1999-0081215 (1999-11-01), None
Jagdt, Holger; Reduction of noise current in microprocessor systems; Oct. 22, 1992 Pub. No. DE004112672A1; Doc. Identifier: DE 4112672 A1.
Murayasu Yoshiro
Shibata Hiroyuki
Watanabe Satoshi
Hitachi , Ltd.
Kovalick Vincent E.
Shalwala Bipin
Staas & Halsey , LLP
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