Picture information display device

Claim 1

A picture information display device comprising: a gas discharge display device of a self-scanned panel display type having a separate display function and scanning function, said discharge display device not being provided with an inherent memory; an analog sample and hold circuit including a plurality of sample and hold units, each said unit having a memory capacitor and an MOS transistor gate driven by an n-bit shift register having n output terminals which are integrated on a semiconductor substrate for sampling and holding a picture information signal, which includes half-tone of the picture, for each picture element; a means for effecting luminancE modulation of each line of said gas discharge display device by continuously controlling gas discharge current according to the picture information signal sampled by said analog sample and hold circuit corresponding to the respective picture element and stored in said memory capacitor for reproduction of said picture information signal; and a means for reproducing said picture information signal from serial to parallel format by sequentially displaying said line of the gas discharge display device in line at a time format by use of said analog sample and hold circuit.