Video noise reduction in picture-in-picture television receiver

Details Video noise reduction in picture-in-picture television receiver Video noise reduction in picture-in-picture television receiver

1985-12-31

1987-07-21

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 358181, H04N 5262, H04N 964

Patent

active

046822348

ABSTRACT:
When the second channel in a picture-in-picture (PIP) receiver is turned off by the user, it is automatically tuned to the station selected for the first channel. Both channels thus process a signal having the same picture information. After partial processing, the two signals are averaged, creating a signal which has the same picture signal components but substantially reduced noise components. This reduced noise signal is then subjected to the remaining standard processing in the first channel and applied to the picture tube.

REFERENCES:
patent: 4070695 (1978-01-01), Scholz et al.
patent: 4139860 (1979-02-01), Micic et al.
patent: 4249211 (1981-02-01), Baba et al.
patent: 4267560 (1981-05-01), Ishikawa
patent: 4367484 (1983-01-01), Kuroyanagi et al.

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