公开(公告)号：CA1038075A

公开(公告)日：1978-09-05

申请号：CA221813

申请日：1975-03-11

Applicant: SONY CORP

Inventor： YAMADA MITSUYOSHI ,  HATADA HIDEO ,  IZUMISAWA MASATO ,  MACHIDA HIROMASA ,  FURUYAMA NORIHIDE

IPC: H04N9/16

Abstract: A system for compensating for mislanding of electron beams in a color cathode ray tube, which comprises a coil device provided on the color cathode ray tube in addition to a main deflection coil, a circuit for producing a plurality of currents having different wave forms, respectively, and a connecting device for connecting the coil device to selected one of connection points of the circuit so as to supply one or more of the currents produced in the circuit, which has a desired wave form, to said coil device selectively in response to the direction to which the color cathode ray tube faces, thereby to achieve sufficient compensation for mislanding of electron beams caused by the earth's magnetic field regardless of the directional situation of the cathode ray tube.