Video processing to convert between field rates

Details Video processing to convert between field rates Video processing to convert between field rates

1995-02-01

1998-03-31

Peng, John K.

Television

Format conversion

Changing number of fields for standard conversion

348443, 348447, 348448, 348911, H04N 701, H04N 1120

Patent

active

057344353

ABSTRACT:
A method for converting between relatively dose field rates of perhaps 60 Hz and 59.94 Hz, monitors the phase difference between input and output field rates. Initially, output fields are created by synchronising input fields. As the measured phase passes a threshold, the method switches to interpolation mode for a short, fixed interval and then returns to synchronization. The method offers much of the sharpness associated with simple synchronization but avoids the visible discontinuities of field drops or repeats.

REFERENCES:
patent: 4607282 (1986-08-01), Van de Polder
patent: 4989091 (1991-01-01), Lucas
patent: 5115311 (1992-05-01), Jaqua
patent: 5221966 (1993-06-01), Clayton et al.
patent: 5313281 (1994-05-01), Richards
patent: 5321500 (1994-06-01), Capitant et al.
patent: 5353119 (1994-10-01), Doricott et al.
patent: 5404171 (1995-04-01), Goldstein et al.
H. Sakata et al, NHK Technical Monograph, No. 17, Mar. 1971, "Television Standards Converter", pp. 3-37.

Affiliated with

Also associated with

Rating

Video processing to convert between field rates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video processing to convert between field rates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video processing to convert between field rates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-55788