Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1994-09-09
1997-09-23
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
H01J 2956
Patent
active
056708505
ABSTRACT:
A circuit (10) and method for reducing a tilt of a video picture on a color monitor includes a circuit (30) for providing an output signal for controlling the vertical position of the scanning beam that includes an MOS transistor (60) having substantially zero current flow in its gate element, and connected to control the magnitude of the output drive signal. In a preferred embodiment, a LinBiCMOS semiconductor manufacturing process is employed to fabricate a plurality of bipolar transistors connected to provide a control voltage on the gate of the MOS transistor (60), which may conveniently be an NMOS device. The bipolar transistors may be connected to form a translinear cell (11) connected to receive a signal (17) related to a horizontal synchronizing signal and to provide a voltage output to the gate of the MOS transistor (60) in response thereto.
REFERENCES:
patent: 4586004 (1986-04-01), Valdez
patent: 4667165 (1987-05-01), De Weck
patent: 5293223 (1994-03-01), Kawamoto et al.
Chiang Johnson
Chou Tony
Tsong Danny
Blum Theodore M.
Brady III Wade James
Donaldson Richard L.
Stewart Alan K.
Texas Instruments Incorporated
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