Color-picture/multichannel-sound recording system

Details Color-picture/multichannel-sound recording system Color-picture/multichannel-sound recording system

H - Electricity

04

N

352/33.12, 352/1

H04N 5/82 (2006.01)

Patent

CA 1073103

RCA 68690 Div. B ABSTRACT COLOR-PICTURE/MULTICHANNEL-SOUND RECORDING SYSTEM Color picture information is recorded on a video disc together with multiple channels of sound information (e.g., a pair of stereo sound signal components). Each audio signal to be recorded modulates the frequency of a respectively different sound carrier over a respectively different low frequency deviation range. Picture carrier waves are frequency modulated in accordance with composite color video signals, including a luminance component and a chrominance component. The duty cycle of the modulated picture carrier waves is varied in accordance with the sum of the respective frequency modulated sound carriers to form a recording signal, The sound carrier deviation ranges lie below (but near) the band occupied by the chrominance component A disc record is developed with a pattern of depressed and non-depressed regions in its groove bottom representative of the recording signal. Playback apparatus recovers from the disc record a playback signal of the general form of the recording signal. Respective bandpass filters, with pass- bands centered about the respective sound carrier deviation ranges, select playback signal portions for application to respective sound carrier FM demodulators. Additional filter, with passband encompassing picture carrier deviation range and first order sideband therefor, supplies input to picture carrier FM demodulator. Video signal processing circuits, responsive to output of picture carrier FM demodulator, include respective comb filters for selectively passing respective luminance and chrominance components. -1-

326498

Affiliated with

Also associated with

Rating

Color-picture/multichannel-sound recording system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color-picture/multichannel-sound recording system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color-picture/multichannel-sound recording system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-748735