Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1985-04-11
1987-02-24
Masinick, Michael A.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 41, 358 51, 358 52, 358 55, 358229, H04N 909, H04N 530
Patent
active
046461418
ABSTRACT:
A color television camera has several pick-up tubes (T1, T2, T3) which are arranged substantially horizontally or vertically in the camera. The pick-up tubes (T) each have a mu-metal shielding (mu1) against magnetism. Each substantially vertically arranged pick-up tube (T2, T3) has an additional second mu-metal shielding (mu2, mu2'), which is absent for the horizontally arranged tube. The second shielding may be in the form of a single plate (mu2), overlapping the pick-up tube or two plates (mu2, mu2') arranged on both sides of the pick-up tube and overlapping the tube. Deflection errors, especially in the corners of the television pictures caused by magnetic fields, are reduced to acceptable values.
REFERENCES:
patent: 4218712 (1980-08-01), Clymer et al.
patent: 4274031 (1981-06-01), Saito
patent: 4298894 (1981-11-01), Takamura
patent: 4556821 (1985-12-01), Cooper
Kuiper Bernardus A.
Timmermans Franciscus W. A.
Briody Thomas A.
Masinick Michael A.
Oisher Jack
Smith Cynthia D.
Streeter William J.
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