Dynamic damping for SECAM high-frequency de-emphasis

Details Dynamic damping for SECAM high-frequency de-emphasis Dynamic damping for SECAM high-frequency de-emphasis

1977-03-09

1979-01-16

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 23, 358 37, H04N 9537, H04N 950, H04N 514

Patent

active

041352017

ABSTRACT:
A switching element is placed across a filter and controllably activated to dynamically change the response of the filter. Specifically, additional damping is switched into the "Bell" characteristic, interjected during blanking and removed after the beginning of white lead-in, to dynamically change the response of the band-pass "Bell" filter in a Sequential Color and Memory Television System.

REFERENCES:
patent: 3956719 (1976-05-01), Waku et al.
Chrominance Circuits for SECAM Color TV Receiver: National Technical Report, vol. 20, No. 6, pp. 786-800, Dec. 1974.

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