Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-04-25
2006-04-25
Wu, Xiao (Department: 2674)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S212000, C310S314000, C315S254000
Reexamination Certificate
active
07034800
ABSTRACT:
A driving circuit for a piezoelectric transformer is provided, which is capable of driving a piezoelectric transformer at a high efficiency and with low distortion, and being miniaturized. At the commencement of lighting a cold-cathode fluorescent tube, a digital controller fixes frequencies of first and second control signals VC1and VC2at a predetermined frequency and controls the phase difference therebetween so that an output power of the piezoelectric transformer becomes from substantially zero to a predetermined output power. After lighting of the cold-cathode fluorescent tube, the digital controller controls the phase difference between the first and second control signals VC1and VC2so that current detecting data CD substantially is matched with reference data RD.
REFERENCES:
patent: 5705879 (1998-01-01), Abe et al.
patent: 5777425 (1998-07-01), Ino et al.
patent: 5866968 (1999-02-01), Mech
patent: 5905491 (1999-05-01), Kim
patent: 5969954 (1999-10-01), Zaitsu
patent: 6025824 (2000-02-01), Horiuchi et al.
patent: 6407480 (2002-06-01), Nakanishi et al.
patent: 6531830 (2003-03-01), Akimoto et al.
patent: 6545426 (2003-04-01), Chen
patent: 6564015 (2003-05-01), Ishikawa et al.
patent: 6636190 (2003-10-01), Hirakata et al.
patent: 2002/0014865 (2002-02-01), Akimoto et al.
patent: 7-39144 (1995-02-01), None
patent: 7-59338 (1995-03-01), None
patent: 10-178784 (1998-06-01), None
patent: 2000-133485 (2000-05-01), None
patent: 2000-139081 (2000-05-01), None
patent: 2000-312474 (2000-11-01), None
patent: 2000-348891 (2000-12-01), None
patent: 2000-357825 (2000-12-01), None
patent: 2001-136749 (2001-05-01), None
Ishikawa Takashi
Moritoki Katsunori
Nakatsuka Hiroshi
Takeda Katsu
Fatahi-yar M.
Hamre Schumann Mueller & Larson P.C.
Matsushita Electric - Industrial Co., Ltd.
Wu Xiao
LandOfFree
Driving circuit and driving method for piezoelectric... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driving circuit and driving method for piezoelectric..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving circuit and driving method for piezoelectric... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3550237