Device and method for generating spread spectrum signal using pseudo-orthogonal code in cdma mobile communications system
CA 2245196 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Ahn, Jae-Min; Yoon, Soon-Young; Song, Hong-Yeop
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spread spectrum signal generating device using a pseudo-orthogonal code in a CDMA mobile communications system. In the device a signal, converter converts an input channel data bit stream a pseudo-orthogonal code, generator generates a pseudo-orthogonal code being a combination of M different Walsh codes, a PN code generator generates a PN code being a real part and a PN code being an imaginary part a pseudo-orthogonal code, spreading and PN code portion divides the converted signal into M signal sequences, multiplies each signal sequence by the pseudo-orthogonal code generates MxN signal sequences, and multiplies each spread signal sequence by a PN code for PN masking, and an output …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 17, 1998 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.