Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1992-06-22
1994-01-18
Powell, Mark R.
Facsimile and static presentation processing
Facsimile
Recording apparatus
313425, 315379, 315370, 315387, 358237, H04N 3227
Patent
active
052803600
ABSTRACT:
An electron beam current modulator is provided between a cathode and a laser screen of a cathode-ray tube and has at least three deflecting plates positioned around, and symmetrically with respect to an optical axis of the cathode-ray tube and a diaphragm having an aperture of a regular shape. An electromagnetic control system is provided between the cathode and deflecting plates. A pickup senses position of the electron beam and produces a signal in case of an offset of the electron beam with respect to the optical axis. A video signal source is connected to a carrier generator having an output connected to an input of a phase shifter. The phase shifter has its outputs connected to the deflecting plates to rotate the cross-section of the electron beam in a plane drawn perpendicularly with respect to the optical axis. The apparatus has a control unit having an input connected to the pickup and an output connected to the electromagnetic control system.
REFERENCES:
patent: 3182224 (1965-05-01), Stone et al.
patent: 3267209 (1966-08-01), Nagamori et al.
patent: 3316432 (1967-04-01), Smith
patent: 3558956 (1971-01-01), Bosev et al.
patent: 3959584 (1976-05-01), Todd
patent: 3986194 (1976-10-01), Masumoto et al.
patent: 3996492 (1976-12-01), McGroddy
patent: 4099092 (1978-07-01), Bristow
patent: 4140941 (1979-02-01), Uemura
patent: 4160935 (1979-07-01), Groot et al.
patent: 4291256 (1981-09-01), Garwin
patent: 4456853 (1984-06-01), Robinder et al.
patent: 4479222 (1984-10-01), Hawrylo
patent: 4523212 (1985-06-01), Hawrylo
patent: 4539687 (1985-09-01), Gordon et al.
patent: 4565947 (1986-01-01), Minn
patent: 4568861 (1986-02-01), Doran et al.
patent: 4571727 (1986-02-01), Nishizawa et al.
patent: 4626739 (1986-12-01), Shmulovich
patent: 4634922 (1987-01-01), Nill
patent: 4695332 (1987-09-01), Gordon et al.
patent: 4701789 (1987-10-01), Bonye
patent: 4706253 (1987-11-01), Su et al.
patent: 4714956 (1987-12-01), Yin
patent: 4749907 (1988-06-01), Boatwright et al.
patent: 4812713 (1989-03-01), Blachard
patent: 4813049 (1989-03-01), Becla
patent: 4894832 (1990-01-01), Colak
patent: 4945223 (1990-07-01), Beauzamy
patent: 4955031 (1990-09-01), Jain
patent: 4978202 (1990-12-01), Yang
A. Nasibov, Laser Cathode Ray Tubes and Their Applications, SPIE vol. 893 High Power Laser Diodes and Appl., 1988, pp. 200-202.
A. S. Nasibov and E. S. Shemchuk, Use of Laser Electron-Beam Tubes In Projection Television, Sov. J. Quantum Electron, Sep., 1978, pp. 1080-1085.
Derdyra Nikolai V.
Kozlovsky Vladimir I.
Lerner Marshall A.
P. N. Lebedev Institute of Physics
Powell Mark R.
Principia Optics, Inc.
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