Universal embedded compression engine for LCD TV system-on-a-chip with Band-Expansion Progressive Wavelet Coding

For high-resolution and high-frame-rate LCD TVs, the large memory bandwidth and large off-chip memory size become the bottleneck of efficient SoC design. To solve this problem, a universal embedded compression engine is proposed in this paper. A new algorithm named as Band-Expansion Progressive Wavelet Coding (BE-PWC) is first proposed to provide two coding modes, line and block modes, with precise rate control ability. Next, the associate hardware architectures are also proposed to achieve high throughput and low latency. Implementation results show that it can achieve high throughput requirements of 1080p at 120fps with only 143k in logic gate count under the working frequency of 200MHz.