In this paper, the algorithm of a VLC codec system with new group-based approach is presented. Based on the proposed codeword grouping and symbol memory mapping, the group-searching scheme and codec processes are completed by applying numerical properties and arithmetic operations to codewords and symbol addresses. The memory requirement of encoder is reduced by a novel symbol-converting scheme. Therefore, the programmable coding table and symbol representation can be achieved. Based on MPEG-like systems, an architecture design that performs concurrent VLC codec processes with constant symbol rate is presented. Simulation results show 100 Msps with 100 MHz-clock for both encoding/decoding procedures can be achieved. As a result, it is suitable for those applications that require codec processes simultaneously, such as videoconferencing, and high throughput systems, such as HDTV.
|Journal||Proceedings - IEEE International Symposium on Circuits and Systems|
|State||Published - 1 Jan 2000|
|Event||Proceedings of the IEEE 2000 International Symposium on Circuits and Systems - Geneva, Switz|
Duration: 28 May 2000 → 31 May 2000