H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/78
H04N 9/16 (2006.01) H04N 9/24 (2006.01)
Patent
CA 1126859
S01201 BEAM INDEX COLOR TELEVISION RECEIVER APPARATUS ABSTRACT OF THE DISCLOSURE Apparatus for controlling the electron beam in a beam index color television receiver of the type having cathode ray tube whose display screen is provided with beam-excitable color elements and index elements which are scanned by the beam. The apparatus comprises an index signal generator for generating a periodic index signal as the index elements are scanned by the beam. Color gates are provided for sequentially gating respective color control signals individually to modulate the electron beam as that beam scans the color elements. A gating signal generator generates sequential gating signals at a frequency synchronized with the frequency of the periodic index signal. These gating signals are supplied in sequence to the color gates to control the latter so as to gate the respective color control signals. A driving circuit responds to the periodic index signal to drive the gating signal generator. The driving circuit includes a time adjustment circuit for compensating the inherent time delay of the overall apparatus such that the respective color control signals are gated in time correspondence with the position of the beam at a color element that is associated with the gated color control signal. -i-
330817
Hosono Takashi
Tooyama Akira
Tooyama Takashi
Gowling Lafleur Henderson Llp
Sony Corporation
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