Company Filing History:
1 out of 4 
1 out of 48 Years Active: 2003-2009
Title: Ken Gracie: Innovator in Speech Data Recovery and Decoding Techniques
Introduction
Ken Gracie is a notable inventor based in Ottawa, Canada. He has made significant contributions to the field of speech transmission systems and decoding techniques. With a total of 2 patents, his work has advanced the technology used in communication systems.
Latest Patents
One of Ken Gracie's latest patents is a method for the recovery of lost speech data. This innovative method addresses the challenge of lost speech samples in speech transmission systems. It employs a waveform coder that operates on digital speech samples, utilizing a composite model of speech. The method effectively estimates both periodic and colored noise components of unreliable samples. By using adaptive FIR filters, the method interpolates estimates of the periodic component, ensuring stability and efficiency. This approach allows for the effective compensation of gaps in speech data, significantly improving communication quality.
Another patent focuses on reduced-complexity max-log-APP decoders. This invention provides methods for simplifying the decoding process in Turbo and Turbo-like decoders. By eliminating unnecessary calculations, the methods enhance the efficiency of decoding convolutional codes. The early stopping method introduced in this patent further reduces the average number of decoding operations required, streamlining the overall process.
Career Highlights
Ken Gracie has worked with esteemed organizations, including Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry through the Communications Research Centre. His experience in these roles has allowed him to contribute to significant advancements in communication technologies.
Collaborations
Throughout his career, Ken has collaborated with notable individuals such as John Lodge and Stewart N Crozier. These partnerships have fostered innovation and the development of cutting-edge technologies in the field.
Conclusion
Ken Gracie's contributions to speech data recovery and decoding techniques have made a lasting impact on communication systems. His innovative patents reflect his dedication to advancing technology in this vital area.