D.C. responsive equalization for television transmission channel

Dark level restoring circuit

Dark room safe light filter assembly for a TV set

Data carrier for optical read-out

Data carrier optically read out by transmission, and method of m

Data communication apparatus

Data communication apparatus and method capable of selecting a c

Data communication apparatus which transmits in accordance with

Data communication apparatus with display of parallel operation

Data communication system for writing or reading data to/from im

Data communications apparatus having a computer modem function

Data compression

Data compression apparatus and method

Data compression apparatus and method for encoding and decoding

Data compression method for graphics images

Data compression using a feedforward quantization estimator

Data compression using orthogonal transform and vector quantizat

Data conversion table changing

Data converter and image reader using the same

Data converting apparatus, method for converting data and...