FTL developement in Client SSD and eMMC ．Firmware performance evaluation and tuning ．Implement bad block management. ．Implement background trim and optimize performance. ．Implement spor rebuild to recover open block data and raid recover. ．Implement open block dummy padding to make the data stable. ．Implement marchC algorithm and use different DMA to verify hardware bugs. ．Implement rawdisk to profile the performance of host passthrough to NAND flash. ．Implemented command history and command autocomplete for UART CLI ．Use cli to develop different commands for debugging and assisting in white-box testing. ．Optimize IO read/write performance. ．Optimize garbage collection performance. ．Debug and solve firmware issue. ．Family with PS8229 eMMC code. ．FPGA verify.

．Familiar with HDMI and USB UVC. ．Integrate different HDMI and DP chips into an HDMI bridge system. ．MJPEG firmware development and fpga verification. ．Implement lzw encoding and color dithering to compress images. ．Use multithreading to optimize HDMI bridge performance. ．Customize features for different clients. ．Porting an HTTP server and develop web pages to enable interaction with the chip through a web interface.