Two port network with shared elements for combining and filterin

Details Two port network with shared elements for combining and filterin Two port network with shared elements for combining and filterin

1992-09-16

1994-03-22

Powell, Mark R.

Television

Image signal processing circuitry specific to television

Color television signal processing

348571, 348624, H04N 964

Patent

active

052969215

ABSTRACT:
A network combines luminance and chrominance signals to provide a composite video signal wherein the chrominance signal is subjected to band pass filtering to reject low frequency noise and the luminance signal is subjected to filtering by a predetermined amount at the color subcarrier frequency to reject color dots. In a preferred implementation, the filter is realized with only one inductor and one capacitor thereby preventing displayed artifacts with the economic and reliability benefits of minimal parts count.

REFERENCES:
patent: 2895004 (1959-07-01), Fredendall
patent: 3728476 (1973-04-01), Bates et al.
patent: 4558348 (1985-12-01), Bolger et al.
patent: 4664387 (1987-02-01), Bell et al.
patent: 4689663 (1987-08-01), Bell et al.

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