Television flicker preventing circuit with gamma value conversio

Details Television flicker preventing circuit with gamma value conversio Television flicker preventing circuit with gamma value conversio

1986-03-31

1988-11-08

Faber, Alan

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 32, 358164, 35821311, 358336, 360 111, 360 381, H04N 980, H04N 592

Patent

active

047837039

ABSTRACT:
In a field/frame conversion system in which a field signal recorded on a track of a recording medium is repeatedly reproduced, a field signal delayed by 1/2 horizontal scanning duration and a directly provided field signal are alternately selected by a switch at each vertical scanning duration, and one of the field signals is formed by an arithmetic mean of a signal delayed by 1 horizontal scanning duration and a directly provided signal, to provide a frame signal, a flicker preventing circuit device in a field/frame conversion comprises a circuit provided in a front stage of an arithmetic mean circuit of the field/frame conversion system for bringing a gamma value of the field signal to 1, and a gamma circuit provided in a rear stage of the arithmetic mean circuit for returning the gamma value of the field signal to its original value.

REFERENCES:
patent: 4027333 (1977-05-01), Kaiser et al.
patent: 4298896 (1981-11-01), Heitmann
patent: 4400719 (1983-08-01), Powers
patent: 4412251 (1983-10-01), Tanaka et al.
patent: 4489349 (1984-12-01), Okada
patent: 4499494 (1985-02-01), Dischert et al.
patent: 4605951 (1986-08-01), Kuribayashi
patent: 4641202 (1987-02-01), Nakamura et al.
patent: 4675751 (1987-06-01), Yagi et al.

Affiliated with

Also associated with

Rating

Television flicker preventing circuit with gamma value conversio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Television flicker preventing circuit with gamma value conversio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television flicker preventing circuit with gamma value conversio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-466231