Output circuit

Details Output circuit Output circuit

1994-06-23

1996-01-09

Kostak, Victor R.

Television

Video display

Projection device

348190, 31536818, H04N 1704

Patent

active

054833000

ABSTRACT:
A convergence output circuit for converging signals corresponding to the primary colors of an input video signal which reduces power loss by including a positive power source voltage supply circuit for supplying a first voltage to a first current supply circuit during a blanking period of the input video signal and for supplying a second voltage, lower than the first voltage, to the first current supply circuit during a scanning period of the video signal, both the first and second voltages being positive. A negative power source voltage supply circuit supplies a third voltage, opposite in polarity to the first voltage, to the second current supply circuit during the blanking period and supplies a fourth voltage, opposite in polarity to the second voltage, to the second current supply circuit during the scanning period, both the third and fourth voltages being negative.

REFERENCES:
patent: 4032819 (1977-06-01), Henley et al.
patent: 4801852 (1989-01-01), Kashiwagi
patent: 4961030 (1990-10-01), Ogino et al.
patent: 4982276 (1991-01-01), Kawashima et al.
patent: 5237246 (1993-08-01), Gleim
patent: 5389859 (1995-02-01), Stessen et al.

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