Method and system for transmitting and/or recording color T.V. signals

In a system for transmitting color T.V. signals in analog form from a receiver into a recorder, from a transmitter to a receiver, from a color T.V. camera into a transmitter, or the like, in combination, means for transmitting the luminance information throughout approximately 80% of the horizontal line period;

• means for processing synchronizing pulses during alternate horizontal line intervals and blanking-level signals in alternate horizontal line intervals which alternate with those of the synchronizing pulses;
• and means for processing the color information signals in time-compressed and time-division-multiplexed form throughout the major portion of the remainder of the horizontal line period, including storage means for storing color information signals, means for applying color information signals to the storage means, means for generating and applying trains of write-in and read-out control pulses to the storage means, the pulse repetition frequency of the write-in control pulse train being different from that of the read-out control pulse train, whereby the written-in and read-out color information signals will differ by a time-compression factor, the means for generating and applying the trains of write-in and read-out control pulses including controllable-frequency oscillator means operative for producing pulses at a frequency equal to a multiple of the horizontal line frequency, frequency divider means for deriving from the oscillator means a pulse train of lower frequency, means for furnishing a reference pulse train having a frequency equal to the horizontal line frequency, and phase comparing means operative for receiving the pulse train from the frequency divider means and also the reference pulse train, comparing the two and in dependence upon the comparison automatically adjusting the frequency of the oscillator to effect phase shift regulation.