Company Filing History:
Years Active: 1988-2000
Title: The Innovations of Gunnar A Eriksson
Introduction
Gunnar A Eriksson is a notable inventor based in Huddinge, Sweden. He has made significant contributions to the field of telecommunications, particularly in echo cancellation technologies. With a total of 3 patents to his name, Eriksson's work has had a lasting impact on communication systems.
Latest Patents
One of Eriksson's latest patents is a method and apparatus for controlling echo on both sides of a connection. This innovation features a single two-ended echo canceller that utilizes an adaptive FIR filter to model the impulse response of the echo path. It effectively cancels the echo originating from the PSTN side of the connection, as well as from the mobile phone side, using a non-linear processor controlled by input signal levels. This design allows for the execution of algorithms directed at estimating and cancelling echoes on both sides of the connection within a single DSP, providing numerous advantages.
Another significant patent is the interface circuit between a four-wire line and a two-wire line. This circuit includes correlator and control circuit means that receive longitudinal and transversal signals corresponding to a differential signal from the two-wire interface. The correlator and control circuit create correction signals that measure the correlation between the longitudinal and transversal signals. This correction signal is then used to adaptively control the amplifications in feedback loops, minimizing the correlation between the two signals.
Career Highlights
Gunnar A Eriksson is associated with Telefonaktiebolaget LM Ericsson (publ), a leading telecommunications company. His work at Ericsson has allowed him to develop and refine technologies that enhance communication quality and efficiency.
Collaborations
Throughout his career, Eriksson has collaborated with notable colleagues, including Johan G Meyer and Tonu Trump. These partnerships have contributed to the advancement of innovative solutions in the telecommunications sector.
Conclusion
Gunnar A Eriksson's contributions to echo cancellation and telecommunications technology demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of the challenges in communication systems and provide effective solutions that continue to influence the industry.