摘要:
CIRCUITS FOR MODIFYING THE COLOR INFORMATION CONTAINED IN A COLOR TELEVISION SIGNAL BY PRODUCING, FROM THE MODULATED PERMANENT SUBCARRIER OF THE ORIGINALLY PRODUCER VIDEO SIGNAL PORTION, AN ADDITIONAL SIGNAL WHOSE AMPLITUDE AND PHASE IS A PREDETERMINED FUNCTION OF THE AMPLITUDE AND PHASE OF SUCH PERMANENT SUBCARRIER, AND ADDING THE ADDITIONAL SIGNAL TO THE MODULATED PERMANENT SUBCARRIER OF THE ORIGINALLY PRODUCED
VIDEO SIGNAL FOR PROVIDING A NEW PERMANENT SUBCARRIER CONTAINING COLOR INFORMATION WHICH IS MODIFIED RELATIVE TO THAT CONTAINED IN THE PERMANENT SUBCARRIER OF THE ORIGINALLY PRODUCED VIDEO SIGNAL.
摘要:
A circuit for imparting to the chrominance subcarrier to a television transmitter a desired frequency and phase relationship with the horizontal synchronizing pulses of the video information signal, which circuit includes signal-processing means for deriving from the subcarrier a pulse signal which is at the horizontal synchronizing frequency and which bears the desired frequency and phase relation to the subcarrier, a phase comparator for comparing this pulse signal with the horizontal synchronizing pulses of the information signal, and control means connected between the phase comparator and the chrominance subcarrier generator for adjusting the subcarrier generator in such a manner as to bring the pulse signal into phase coincidence with the synchronizing pulses of the information signal.
摘要:
In a recording or transmitting system for color television signals where three signals R,G,B representing three different color components are recorded or transmitted one after the other line by line, the three color signals are made available simultaneously in each line by means of two delaying devices each with the delay time of the length of one line.