Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1996-07-19
1998-03-31
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
348807, H01J 2951
Patent
active
057342334
ABSTRACT:
The invention presents a digital convergence apparatus of high precision, relating to a digital convergence apparatus applicable to a color display device for displaying various image information in various signal formats, and capable of correcting convergence at high precision to correct color deviation of color image, comprising frequency detecting means for detecting frequency of synchronizing signal included in input signal in every input signal entered from outside, digital convergence correction data operating means for operating digital convergence correction data for display means for displaying the input signal as image, corresponding to the frequency detected by the frequency detecting means, using horizontal synchronizing signal or vertical synchronizing signal of the synchronizing signal as timing signal, and pattern signal generating means for generating a convergence adjusting pattern corresponding to the digital convergence correction data from the correction data operating means, wherein the digital convergence of the image displayed by the display means is corrected by using the digital convergence correction data and convergence correcting pattern corresponding to the output of the frequency detecting means.
REFERENCES:
patent: 5382984 (1995-01-01), Tsujihara et al.
patent: 5398083 (1995-03-01), Tsujihara et al.
patent: 5596248 (1997-01-01), Hosoi et al.
Go Hideyuki
Masumoto Junji
Sakanishi Yasuaki
Blum Theodore M.
Matsushita Electric - Industrial Co., Ltd.
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