Encoding system for picture signal

Abstract

Abstract PURPOSE:To obtain a picture signal encoding system having the conventionality with a simple hardware constitution and suitable for high speed encoding, by encoding picture signal through compression with the MH or MR system. CONSTITUTION:In case of the MH system, an encoded line stored in a picture signal buffer memory 2 is read out, an absolute address of the encoded line is converted into the line length number of white and black lines through the operation processing at an MPU4 and outputted as an address of an encoded ROM table 6 in which the MH code and the bit length are stored. An output from the table 6 is converted into the MH code with an effective bit length at the MPU4, sequentially written in a memory 8 and outputted at a P/S conversion circuit 7 for parallel/series conversion. In case of the MR system, the reference line before one line storing the change point in the absolute address form from the memory 2 and the present code line are read out, processed at the MPU 4 and given as the address of the table 6, allowing to obtain the MR code.

Inventors

• 👤 Satoshi Ogawa
• 👤 聡 小川
• 👤 Yoshio Iizuka
• 👤 良雄 飯塚
• 👤 Shigeo Matsunaga
• 👤 松永　重男

Bibliographic Details