Mitsubishi Denki Kabushiki Kaisha

Shuzi Iwata

Fumitaka Ono

Takayoshi Semasa

Nobuo Fukushima

Yutaka Ueno

Toshiharu Nozawa

A still picture transmission apparatus in which still picture data is transmitted in packet form from a central terminal having a picture data bank selectively to a plurality of local terminals through a common transmission line at which a plurality of distinct logic channels are established, wherein a packet transmission is conducted in such a manner that a command designating a channel number is transmitted to a desired local terminal to which channel the local terminal is to be connected, and still picture data is transmitted with the use of the packet having said channel number.

Still picture transmission apparatus

Binary 0's and 1's from picture elements in each line are counted with respect to each mode determined by adjacent picture elements to form symbol patterns determined by both the counts and the information content of a memory. Each pattern is encoded into a code word to be transmitted having a bit number determined by the arrangement of binary symbols included in it. Also the code words can be transmitted on the basis of address numbers of picture elements, starting with the output from a coder associated with a mode having the two-valued signal with the least address number.

Growing community of inventors

Amagasaki, Japan

Shuzi Iwata