Color encoder with chrominance subcarrier generator responsive to a plurality of clock rates or frequencies

A color encoder comprising:

• RGB input terminals for receiving R, G, and B signals reproduced from a recording medium;
• a latch circuit for latching the R, G, and B signals;
• a color-difference signal forming circuit for forming a color-difference signal from the R, G, and B signals latched by the latch circuit;
• a modulation circuit for modulating a chrominance subcarrier with the color-difference signal output from the color-difference signal forming circuit;
• and
• chrominance subcarrier generating means for generating the chrominance subcarrier from a clock signal supplied from outside;
• wherein said chrominance subcarrier generating means includes means for generating a chrominance subcarrier having a same frequency in response to any of a plurality of clocks having different predetermined frequencies, wherein said plurality of clocks are from one of a) more than one reproductive system and b) more than one television system.

A color encoder comprising:

• RGB input terminals for receiving R, G, and B signals reproduced from a recording medium;
• a latch circuit for latching the R, G, and B signals;
• a color-difference signal forming circuit for forming a color-difference signal from the R, G, and B signals latched by the latch circuit;
• a modulation circuit for modulating a chrominance subcarrier with the color-difference signal output from the color-difference signal forming circuit;
• and
• chrominance subcarrier generating means for generating the chrominance subcarrier from a clock signal supplied from outside;
• wherein said chrominance subcarrier generating means includes means for generating one of a plurality of chrominance subcarriers having different predetermined frequencies from a clock having a same frequency, in accordance with a switching signal, wherein said switching signal indicating one of a) more than one reproductive system and b) more than one television.