Location History:
- Binghamton, NJ (US) (2005)
- Binghamton, NY (US) (1995 - 2011)
Company Filing History:
Years Active: 1995-2011
Title: Innovations of James David Greenfield
Introduction
James David Greenfield is a notable inventor based in Binghamton, NY. He has made significant contributions to the field of digital video encoding, holding a total of 11 patents. His work has advanced the efficiency and quality of video data processing.
Latest Patents
Among his latest patents is the invention titled "Cascaded output for an encoder system using multiple encoders." This innovation allows for the parallel operation of multiple encoders to achieve a desired data rate. The outputs from these encoders are combined through an autonomously operating arrangement, facilitating the transfer of data to a direct memory access arrangement. This process occurs in response to a signal that is asserted upon the completion of encoding and output of encoded data. Additionally, the invention addresses the suppression of zero bytes that may be generated at the beginning and end of an encoder output stream, thereby improving the quality and efficiency of the encoded signal.
Another significant patent is "Dynamically switching quant matrix tables within an MPEG-2 encoder." This invention enables a digital video encoder to switch between sets of quantizer matrix tables without pausing the encoding of a video data stream. The encoder can hold two or more sets of quantizer matrix tables and switch between them at the picture boundary of the video data sequence. This allows for continuous encoding while one set of matrix tables is in use, and another set can be updated or modified simultaneously.
Career Highlights
James David Greenfield is currently employed at International Business Machines Corporation, commonly known as IBM. His work at IBM has positioned him as a key player in the development of advanced encoding technologies.
Collaborations
Throughout his career, Greenfield has collaborated with talented individuals such as Agnes Yee Ngai and Barbara A Hall. These collaborations have contributed to the innovative projects he has undertaken.
Conclusion
James David Greenfield's contributions to digital video encoding through his patents have significantly impacted the industry. His work continues to influence advancements in video data processing and encoding technologies.
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