Three dimensional non-adaptive decoder for a PAL color televisio

Details Three dimensional non-adaptive decoder for a PAL color televisio Three dimensional non-adaptive decoder for a PAL color televisio

1988-04-07

1989-05-23

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 978

Patent

active

048335266

ABSTRACT:
Apparatus for decoding a luminance signal from a PAL composite signal comprising a summing one line delay for deriving the sum of corresponding pixels on adjacent lines of a field, a subtracting one line delay for driving the difference between pixels respectively adjacent to said pixels occur in another frame, an inverter for inverting the polarity of the output of said subtracting one line delay at twice the frequency of the color subcarrier, an adder coupled to said summing one line delay and to said subtractor, a two line delay coupled to the latter adder and another adder coupled to the opposite ends of said two line delay.

REFERENCES:
patent: 4597007 (1986-06-01), Reitmeier et al.
patent: 4684977 (1987-08-01), Dischert et al.

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