Company Filing History:
Years Active: 1990-2006
Title: The Innovations of Christopher H Birch
Introduction
Christopher H Birch is a notable inventor based in Toronto, Canada. He has made significant contributions to the field of technology, particularly in the area of multiplexing variable-rate bit streams. With a total of 12 patents to his name, Birch's work has had a considerable impact on the efficiency of data transmission.
Latest Patents
One of Birch's latest patents involves using a receiver model to multiplex variable-rate bit streams that have timing constraints. This innovative technique determines an output rate for a bit stream by applying information read from the bit stream to a model of a receiver. The methods are utilized to construct a statistical multiplexer that effectively multiplexes varying bit-rate MPEG-2 bit streams onto a satellite uplink. The invention ensures that the minimum and maximum output rates for each MPEG-2 bit stream are set in a way that prevents underflow or overflow in both the multiplexer and the decoder. The multiplexer allocates minimum bandwidth to each bit stream and distributes any remaining bandwidth based on the difference between the minimum and maximum output rates. In cases where bandwidth is insufficient to meet the minimum rates, priorities assigned to the bit streams dictate the allocation of bit rates.
Career Highlights
Birch has been associated with Scientific-Atlanta, Inc., where he has further developed his expertise in telecommunications and data transmission technologies. His work has been instrumental in advancing the capabilities of satellite communications.
Collaborations
Throughout his career, Birch has collaborated with talented individuals such as Si Jun Huang and Christian V Van Staden. These partnerships have contributed to the innovative solutions he has developed in his field.
Conclusion
Christopher H Birch is a distinguished inventor whose work in multiplexing technology has paved the way for advancements in data transmission. His contributions continue to influence the industry and enhance communication systems.