Company Filing History:
Years Active: 1990
Title: Vadavalli G Krishnan: Innovator in Data Modem Technology
Introduction
Vadavalli G Krishnan is a notable inventor based in Miami Lakes, FL (US). He has made significant contributions to the field of data communication, particularly in the development of modem technology. His innovative approach has led to the creation of a unique patent that enhances the functionality of voiceband modems.
Latest Patents
Krishnan holds a patent titled "Constellation multiplexed inband secondary channel for voiceband modem." This invention describes a method of providing an inband secondary channel for a data modem. The process involves encoding the main channel data using a convolutional encoder, allowing main channel data symbols to be selected from a first constellation. The secondary channel data are encoded using a differential encoder, with secondary channel data symbols selected from a second constellation. The main channel symbols are transmitted during 48 frames of a 49-frame master frame, while the differentially encoded secondary channel data symbols are transmitted during the remaining frame. The design ensures that the symbols of the secondary channel constellation have a higher average energy than those of the main channel data, facilitating easy detection and frame synchronization for the modem after brief dropouts.
Career Highlights
Krishnan is currently employed at Racal Data Communications Inc., where he continues to innovate in the field of data communications. His work has been instrumental in advancing modem technology, making it more efficient and reliable.
Collaborations
Throughout his career, Krishnan has collaborated with talented individuals, including coworkers Luis V Farias and Chin-Pan Wong. These collaborations have contributed to the successful development of innovative solutions in the field.
Conclusion
Vadavalli G Krishnan's contributions to data modem technology through his patent demonstrate his expertise and commitment to innovation. His work continues to influence the field, paving the way for advancements in communication technology.