Equalizing method and equalizer using reference signal

Details Equalizing method and equalizer using reference signal Equalizing method and equalizer using reference signal

1996-12-20

1999-03-23

Harvey, David E.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

348 21, H04N 521

Patent

active

058867481

ABSTRACT:
An equalizing method and device for equalizing a received signal by renewing a filtering coefficient of a filter in an off-line system using a pre-stored reference signal. It is first determined whether or not a signal input to a high definition TV (HDTV) includes a field sync or not. If so, the detected field sync is stored in a memory as a training sequence. A filtering coefficient is calculated according to a predetermined algorithm, and a symbol error rate (SER) is calculated using the pre-stored reference signal. The filtering coefficient is transmitted to the filter when the calculated SER is lower than a predetermined value. The process of calculating the filtering coefficient, determining the level of the training sequence, and transmitting the filtering coefficient is repeated until a loop variable equals a loop constant, which indicates the number of off-line operations capable of being performed in a field, while increasing the loop variable when the calculated SER obtained is greater than or equal to the predetermined value.

REFERENCES:
patent: 5111298 (1992-05-01), Koo
patent: 5161017 (1992-11-01), Sato
patent: 5321512 (1994-06-01), Huang
patent: 5512959 (1996-04-01), D'Alto et al.

Affiliated with

Also associated with

Rating

Equalizing method and equalizer using reference 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 Equalizing method and equalizer using reference signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equalizing method and equalizer using reference signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2131490