Demodulated chrominance signal filter with peaked response

Details Demodulated chrominance signal filter with peaked response Demodulated chrominance signal filter with peaked response

1983-04-28

1985-08-20

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9535

Patent

active

045367876

ABSTRACT:
A filter network suitable for processing a signal such as the demodulated "I" chrominance component of a composite color television signal is disclosed. The filter network comprises plural cascaded mutually interactive resonant LC sections for providing wideband filtering, amplitude peaking over a prescribed range of signal frequencies, and signal delay. Mismatched resistors terminate the filter network and constitute the primary DC impedance of the filter network, and the LC sections exhibit selected impedances at frequencies within the peaking frequency range.

REFERENCES:
patent: 2816952 (1957-12-01), Lockhart
patent: 2831919 (1958-04-01), Lockhart
patent: 2908752 (1959-10-01), Lockhart
patent: 3852523 (1974-12-01), Humphrey
Copending U.S. patent application Ser. No. 470,618 of W. E. Sepp, titled "High Order Electrical Signal Filters".
Copending U.S. patent application Ser. No. 488,813 of S. V. Naimpally, titled "Demodulated Chrominance Signal Filter Using Impedance Mismatched Sections."

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