adaptive predictive coder

photoelectricity coder

photoelectric position coder

photoelectric coder

photo multiplying coder

phase-shift coder

perceptual audio coder

PCM coder

paper tape coder

optimal Booth coder

Optical coder

OCDMA coder and decoder

MQ coder

MQ arithmetic coder

MPEG-2 coder

miniature voice coder

medium complexity coder

matrix coder

low complexity coder

logic coder