Wen-Chang Hsu

Title: Innovations by Wen-Chang Hsu in Video Data Compression

Introduction

Wen-Chang Hsu is a notable inventor based in Saratoga, CA (US). She has made significant contributions to the field of digital video compression. Her innovative work has led to the development of a unique system for the compression and decompression of video data.

Latest Patents

Wen-Chang Hsu holds a patent for a "System for compression and decompression of video data using discrete." This digital video compression system accepts matrices of pixels in RGB, YUV, or CMYK formats for data compression. The data is rearranged into 8x8 pixel blocks, with each block consisting of one pixel component type. The pixel data undergoes a discrete cosine transform (DCT), and a quantization step eliminates DCT coefficients with amplitudes below preset thresholds. The video signal is further compressed by coding the elements of the quantized matrices in a zig-zag manner, which is then compressed using Huffman codes. The decompression process is essentially the reverse of the compression steps, and the inverse discrete cosine transform (IDCT) can be implemented by the DCT circuit. This system allows for three levels of compression rate control during the processing of video data.

Career Highlights

Wen-Chang Hsu is associated with C-Cube Microsystems, Inc., where she has applied her expertise in video data compression. Her work has been instrumental in advancing the technology used in digital video processing.

Collaborations

Wen-Chang has collaborated with notable colleagues, including Alexandre Balkanski and Mauro Bonomi. These collaborations have contributed to the development and refinement of her innovative technologies.

Conclusion

Wen-Chang Hsu's contributions to video data compression represent a significant advancement in the field of digital technology. Her innovative patent showcases her expertise and commitment to enhancing video processing systems.