Solid-state color imaging apparatus for extended definition television (EDTV)

A solid-state color imaging apparatus having a plurality of photoelectric conversion means disposed two-dimensionally in rows and columns, each of said photoelectric conversion means having a spectral responsivity characteristic, the apparatus comprising:

• scanning means for reading out a signal of each of said photoelectric conversion means corresponding to a charge accumulated therein as an independent signal in a field, scanning with respect to said field the same number of rows as that of a frame;
• means for obtaining first intensity signals with respect to each one of said number of rows of a frame, wherein each of said first intensity signals corresponds to an intensity signal of each row, and is obtained only from the independent signals read out from each row;
• means for obtaining second intensity signals corresponding to half the number of said first intensity signals by processing said first intensity signals;
• and
• means for encoding said second intensity signals,
• wherein said second intensity signals does so by performing 2:1 subsampling of signals obtained by limiting the bandwith of the first intensity signals along a vertical temporal frequency.

A solid-state color imaging apparatus having a plurality of photoelectric conversion means disposed two-dimensionally in rows and columns, each of said photoelectric conversion means having a spectral responsivity characteristic, the apparatus comprising:

• scanning means for reading out a signal of each of said photoelectric conversion means corresponding to a charge accumulated therein as an independent signal in a field, scanning with respect to said field the same number of rows as that of a frame;
• means for obtaining first intensity signals with respect to each one of said number of rows of a frame, wherein each of said first intensity signals corresponds to an intensity signal of each row, and is obtained only from the independent signals read out from each row;
• means for obtaining second intensity signals corresponding to half the number of said first intensity signals by processing said first intensity signals;
• and
• means for encoding said second intensity signals,
• wherein said spectral responsivity characteristics of said photoelectric conversion means are such that a specified weighted summation of the independent signals read out from each row produces first intensity signals having a spectral content approximately equal to a luminance signal.