Radio data transmission system
CA 1280468 C · Owner: Nakamura, Nobuhiro · Inventors: Nakamura, Nobuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radio data transmission system wherein signals received via a plurality of diversity antennas are switched at a cycle of subtime slot so that when the, reception level of at least one antenna is sufficiently high to receive the required signal in the relevant time slot, the digital signal in that time slot can be detected properly even if the reception level of any other antenna is not sufficiently high. Accordingly the code error rate can be minimized by constituting the system in such a manner that the correlation of variations in the reception levels of the diversity antennas becomes extremely low.
Read the whole patent
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
- Granted February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.