Method of broadcasting an encoded video signal and a...

Details Method of broadcasting an encoded video signal and a... Method of broadcasting an encoded video signal and a...

H - Electricity

04

N

350/20

H04N 7/167 (2006.01) H04N 5/913 (2006.01) H04N 5/93 (2006.01) H04N 7/171 (2006.01)

Patent

CA 1219059

ABSTRACT OF THE DISCLOSURE A video signal is encoded prior to broadcasting by inverting portions of the signal about an encoding axis at a predetermined reference level. To enable the reference level to be determined accurately after the received signal has been recorded and played back using a VTR having a noise reduction circuit, two identification signals having the same level are included in two consecutive horizontal periods of the signal, respectively. The level of the identification signal in the second horizontal period is unaffected by the noise reduction circuit. A decoding circuit detects the level of that identification signal and uses it to generate a decoding axis having the reference level. The decoding circuit at the receiver is thus able to accurately restore the encoded signal by reinverting the inverted portions about a decoding axis having the same level as the encoding axis.

447665

Affiliated with

Also associated with

Rating

Method of broadcasting an encoded video signal and a... 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 of broadcasting an encoded video signal and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of broadcasting an encoded video signal and a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1241949