Method and device for filtering a video signal

Details Method and device for filtering a video signal Method and device for filtering a video signal

2008-01-08

2008-01-08

Mai, Tan V. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

10872151

ABSTRACT:
A method and device operable per the method for high-pass filtering an input signal having a sequence of signal values to provide a high-pass filtered output signal having a sequence of filtered signal values. The method includes selecting a first signal value of the input signal and a second signal value preceding the first signal value and a third signal value following the first signal value, determining an interval defined by the second and third signal values, determining a mean value of the interval, and determining whether the first signal value lies within the interval. If the first signal value lies outside the interval, determining a first distance between the first signal value and a first interval boundary and a second distance between the first signal value and a second interval boundary and a third distance between the first signal value and the mean value to provide a first, a second, and a third distance value, and selecting a signal value from a value range between the smaller of the first and second distance values and the third distance value to provide a selected signal value. If the first signal value lies within the interval, selecting a signal value from a value range between zero and half the interval width to provide the selected signal value. The sign of the selected signal value is then set depending on the position of the first signal value relative to the mean value to provide a value for the high-pass filtered output signal.

REFERENCES:
patent: 5237524 (1993-08-01), Heinemann
patent: 5412432 (1995-05-01), Hong
patent: 2002/0158988 (2002-10-01), Wischermann
patent: 2003/0048367 (2003-03-01), Rieder et al.
patent: 2004/0047370 (2004-03-01), Pessoa et al.
patent: 2004/0100579 (2004-05-01), Hahn et al.
patent: 2 696 260 (1994-04-01), None

Affiliated with

Also associated with

Rating

Method and device for filtering a video signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for filtering a video signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for filtering a video signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3956090