Receiver with correction for comb filter frequency response

Details Receiver with correction for comb filter frequency response Receiver with correction for comb filter frequency response

1989-04-20

1991-02-05

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 31, 358 38, H04N 964

Patent

active

049910035

ABSTRACT:
A video source is coupled to a display processor by a circuit path including a comb filter and a luminance signal delay line and including a comb filter amplitude correction circuit. Circuit means in the path prevents impedance variations of the correction circuit from causing reflections in the delay line thereby preventing image blur due to such reflections. In a preferred embodiment this feature is provided using existing receiver circuitry thereby providing the further technical and economic advantage of improved reliability and providing a cost reduction.

REFERENCES:
patent: 3728476 (1973-04-01), Bates et al.
patent: 4677462 (1987-06-01), Bell
"CTC 148/149 Service Data" pub. by Thompson Consumer Electronics Inc, Indianapolis, Ind., 1988, Schematic 2-1.

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