Company Filing History:
1 out of 8 
1 out of 832,812 Years Active: 2012-2013
Title: Changwen Yang: Innovator in Multimedia Synchronization
Introduction
Changwen Yang is a notable inventor based in Morrisville, NC (US). He has made significant contributions to the field of multimedia synchronization, particularly in the area of closed-caption text alignment using advanced speech recognition techniques. With a total of 2 patents, his work has paved the way for more efficient and accurate multimedia content delivery.
Latest Patents
Changwen Yang's latest patents focus on innovative methods for synchronizing text with audio in multimedia files. One of his patents, titled "Timeline alignment and coordination for closed-caption text using speech recognition transcripts," introduces a system that enhances the searchability of multimedia content by incorporating temporal positions into an inverted index. This allows for time-based queries, enabling users to locate specific segments of content based on the timing of spoken words. The use of Lucene's binary payload feature facilitates the storage of additional binary data for each term instance, optimizing the search process.
Another significant patent by Yang is "Timeline alignment for closed-caption text using speech recognition transcripts." This invention employs N-gram analysis to compare closed-captioned text with audio generated by automated speech recognition (ASR). The result is a precise metadata file that associates each closed-captioned word with its corresponding point in time within the multimedia file, ensuring that viewers receive accurate and synchronized text during playback.
Career Highlights
Throughout his career, Changwen Yang has worked with various companies, including Digitalsmiths Corporation. His expertise in multimedia technology has allowed him to develop innovative solutions that enhance user experience in content consumption.
Collaborations
One of his notable collaborators is Matthew G Berry, with whom he has worked on various projects related to multimedia synchronization and speech recognition technologies.
Conclusion
Changwen Yang's contributions to the field of multimedia synchronization through his patents demonstrate his commitment to innovation and improving user experience. His work continues to influence the way multimedia content is delivered and consumed, making significant strides in the industry.