Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1989-07-14
1990-09-04
Britton, Howard
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 21R, H04N 322, H04N 5262
Patent
active
049548824
ABSTRACT:
A demodulating means receiving television broadcasting electric waves and demodulating the received television video signal and multiplexed teletext signal respectively to primary color signals of R, G and B and a double speed converting means for time-axially compressing within one horizontal period the demodulated R, G and B primary color signals of both are provided so that the television video signal and teletext signal double speed converted within opne horizontal scanning period may be alternately switched by a first switching means and may be displayed on a picture tube through a driving means. Further, in the case of displaying them, by a deflecting means, the vertical amplitude can be made smaller than at the normal time and the vertical picture position can be set in a proper position. Thereby, a television video signal and teletext signal in which the horizontal amplitude and vertical amplitude are set to be, for example, 1/2 those at the normal time can be simultaneously displayed on the picture tube.
REFERENCES:
patent: 4233628 (1980-11-01), Ciciora
patent: 4750039 (1988-06-01), Willis
patent: 4771217 (1968-09-01), Yamanaka
Britton Howard
Kabushiki Kaisha Toshiba
Zarabian Amir
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