Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
A color video signal recording system comprising: first separation means for separating a luminance signal from an input color video signal; means for frequency modulating said separating luminance signal; second separation means for separating a color burst signal and a carrier chrominance signal from said input color video signal; means for intensifying the amplitude of said separated color burst signal with respect to the amplitude of said carrier chrominance signal; automatic gain control means for controlling the levels of the intensified color burst signal and the non-intensified carrier chrominance signal so that a specific level is not exceeded; first frequency conversion means for frequency converting the output signal of said automatic gain control means into a band which is lower than the band of said frequency-modulated luminance signal; and means for mixing and multiplexing said frequency-modulated luminance signal with the output signal of said first frequency conversion means and for recording the resulting mixed and multiplexed signal on a recording medium.
Claim 2
Dependent Claim
161 words
A color video signal recording system comprising: first separation means for separating a luminance signal from an input color video signal; means for frequency modulating said separating luminance signal; second separation means for separating a color burst signal and a carrier chrominance signal from said input color video signal; means for intensifying the amplitude of said separated color burst signal with respect to the amplitude of said carrier chrominance signal; automatic gain control means for controlling the levels of the intensified color burst signal and the non-intensified carrier chrominance signal so that a specific level is not exceeded; first frequency conversion means for frequency converting the output signal of said automatic gain control means into a band which is lower than the band of said frequency-modulated luminance signal; and means for mixing and multiplexing said frequency-modulated luminance signal with the output signal of said first frequency conversion means and for recording the resulting mixed and multiplexed signal on a recording medium.
Claim 3
Dependent Claim
34 words
A color video signal recording system as claimed in claim 1 in which said intensifying means intensifies the amplitude of said color burst signal to become twice the amplitude of said carrier chrominance signal.
Claim 4
Dependent Claim
34 words
A color video signal recording system as claimed in claim 1 in which said intensifying means intensifies the amplitude of said color burst signal and passes said carrier chrominance signal with its amplitude unchanged.
Claim 5
Dependent Claim
34 words
A color video signal recording system as claimed in claim 1 in which said intensifying means passes said color burst signal with its amplitude unchanged and suppresses the amplitude of said carrier chrominance signal.
Claim 6
Dependent Claim
168 words
A color video signal reproducing system for reproducing a signal recorded by the recording system as claimed in claim 1, said reproducing system comprising: means for reproducing said mixed and multiplexed signal recorded on said recording medium; third separation means for separating the frequency-modulated luminance signal from the reproduced signal; means for demodulating the separating frequency-modulated luminance signal; fourth separation means for separating the frequency converted color burst signal and carrier chrominance signal from the reproduced signal; second frequency conversion means responsive to said fourth separation means for frequency converting the separated signal into the original frequency band to produce a color burst output signal and a carrier chrominance signal; means for suppressing the amplitude of said color burst signal from said second frequency conversion means with respect to the amplitude of said carrier chrominance signal; and means for mixing said demodulated luminance signal, said color burst signal of suppressed amplitude, and the non-suppressed carrier chrominance signal, and deriving the resulting signal as a reproduced color video signal.
Claim 7
Dependent Claim
50 words
A color video signal reproducing system as claimed in claim 5, said system reproducing a signal recorded by the recording system claimed in claim 2, and means whereby said suppression means suppresses the amplitude of said color burst signal to one-half relative to the amplitude of said carrier chrominance signal.
Claim 8
Dependent Claim
49 words
A color video signal reproducing system as claimed in claim 5 in which said suppression means has the same circuit as said intensifying means and means for supplying an operation control signal having a phase opposite to the phase of an operation control signal supplied to said intensifying means.
Claim 9
Dependent Claim
78 words
A color video signal reproducing system as claimed in claim 5 in which said second frequency conversion means comprises a frequency converter supplied with the output of said fourth separation means, means for phase detecting the output signal of said frequency converter, and variable frequency oscillation means operating at a frequency which is controlled responsive to the output of said phase detecting means and means for supplying the resulting output from said oscillation means to said frequency converter.