DESIGN PROBLEMS OF TRANSFORM CODERS FOR IMAGE TRANSMISSION

Abstract

Some experiments have been undertaken with general coder circuit models. These experiments revealed the possibility that coders implemented by the use of adders only, are suitable for coding video signals in real-time operation. During the experiments the authors applied relatively small N values, which is not always advantageous for transform efficiency. The applied components were of TTL-S and ECL-types. The parallel processing described in short in point 4, provides the possibility to code simultaneously a larger image section (N above 4). In this way the development of VLSI integrated circuit, specially designed for transform coding purposes can be achieved. This type of development is being undertaken in several parts of the world.