Fengduo Hu

Title: Innovations of Fengduo Hu

Introduction

Fengduo Hu is a notable inventor based in Cupertino, CA (US). He holds a total of 8 patents that showcase his contributions to the field of audio encoding and digital signal processing. His work has significantly impacted the way audio and video signals are synchronized and processed.

Latest Patents

One of his latest patents is the "Start/stop audio encoder apparatus and method for synchronizing digital audio and video signals." This invention utilizes digital signal processing (DSP) techniques to synchronize the audio encoding process with a video synchronization signal. The encoder parameters of a DSP microchip are preset according to the characteristics of an audio frame. A buffer temporarily stores the audio frame before sending it to an encoder. The buffer transfers the frame in response to receiving a video synchronization signal along with authorization from a microprocessor. This method ensures that the encoding sequence of the audio frame aligns with the video synchronization signal, allowing for effective processing of audio samples in sequence with video data.

Another significant patent is the "System and method for enhancing MPEG audio encoder quality." This system improves digital data compression in an audio encoder by establishing a threshold based on the bit rate of the input data. The masking index is calculated for the input data using different formulas depending on whether the bit rate is above or below the threshold. A psycho-acoustic modeler within the encoding section of a CODEC circuit determines which parts of the input audio data can be ignored without compromising sound quality. This innovative approach enhances the overall efficiency of audio encoding.

Career Highlights

Fengduo Hu has worked with prominent companies, including Sony Corporation. His experience in the industry has allowed him to develop cutting-edge technologies that advance audio processing.

Collaborations

Throughout his career, Fengduo Hu has collaborated with talented individuals such as Lin Yin and Yew-Koon Tan. These partnerships have contributed to the success of his inventions and innovations.

Conclusion

Fengduo Hu's contributions to audio encoding and digital signal processing have made a significant impact in the field. His innovative patents reflect his expertise and dedication to advancing technology.