Coding system for facsimile signal

Abstract

Abstract PURPOSE:To contrive to improve the compression rate of a picture signal by detecting the 2nd line whose one line's share signals are all at white level consecutive to the 1st line and using the 2-dimension coding so as to encode the 2nd line. CONSTITUTION:The digital picture signal inputted from a transmission scanning section 10 is stored sequentially in a line memory 12 having a memory capacity of at least two lines and a full white line detection section 13 detects a line whose signals are at '0' level and a compression section 14 applies the 2- dimenson coding even if the line corresponds to the K-th line for linear coding when the line whose level is all '0' after the line whose level is all '0'. Thus, the compression rate is improved.

Inventors

• 👤 Toshifumi Nakajima

Bibliographic Details