This inventor holds 3 USPTO granted patents. Top assignees: Industrial Technology Research Institute, Other. Active years: 1997-2002.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 9,312 
1 out of 834,601 Years Active: 1997-2002
Title: Innovations of Chien-Chen Liang
Introduction
Chien-Chen Liang is a notable inventor based in Taichung, Taiwan. He has made significant contributions to the field of video technology, particularly in the area of compressed video playback. With a total of 3 patents, his work has advanced the capabilities of video tape recording and playback systems.
Latest Patents
One of Chien-Chen Liang's latest patents is a trick mode VTR that generates trick play data from a stream of images containing intra-pictures and predictive pictures. This invention selects specific DCT coefficients for intra-pictures, allowing for enhanced playback features. The tape is formatted to record trick mode data at normal speed within designated areas, which are defined by predetermined boundaries. These boundaries are strategically placed to maintain an ideal scan path for the recording heads.
To facilitate tracking, sync words and trick mode identification codes are interleaved within the trick mode data areas. During playback, the heads reproduce these sync words and identification codes, counting those that match the current trick mode. This count is then compared to previous intervals to determine if the heads are accurately following the ideal scan path. The trick mode data can be independently reproduced, decoded, and presented during trick mode playback, enhancing the user experience.
Career Highlights
Chien-Chen Liang has worked at the Industrial Technology Research Institute, where he has contributed to various projects related to video technology. His expertise in this field has led to innovative solutions that improve video playback and recording systems.
Collaborations
Chien-Chen Liang has collaborated with notable colleagues such as Hou-Chun Ting and Hsueh-Ming Hang. Their combined efforts have furthered advancements in video technology and contributed to the success of their projects.
Conclusion
Chien-Chen Liang's contributions to video technology through his patents and collaborations have significantly impacted the industry. His innovative approaches to trick mode data generation and playback continue to influence the development of advanced video systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile