Method for converting an analog picture signal into an amplitude

Details Method for converting an analog picture signal into an amplitude Method for converting an analog picture signal into an amplitude

1984-03-14

1988-01-12

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 23, 358 21R, 382 50, 382 52, H04N 1104, H04N 965, H04N 966

Patent

active

047195045

ABSTRACT:
In a circuit arrangement for converting an analog picture signal, which corresponds to consecutive fields, into an amplitude-discrete output signal, which, in a comparison stage, compares the picture signal to a plurality of reference values and produces an amplitude-discrete intermediate signal at an output, a significant simplification of the circuit cost and design effort is accomplished with, at the same time, an improvement in the error cancellation by the fact that the change in the positions of the values of the picture signal and the reference values relative to each other corresponds to the sum of a fraction and a first integral number of value intervals.

REFERENCES:
patent: 4352123 (1982-09-01), Flamm
patent: 4468703 (1984-08-01), Fujiwara et al.
patent: 4525747 (1985-06-01), Sakai et al.
patent: 4539600 (1985-09-01), Takahashi et al.
patent: 4566125 (1986-01-01), Clunn
patent: 4578715 (1986-03-01), Yamaguchi

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