Digital communication device
CA 1266705 C · Owner: Ikegami, Fumio · Inventors: Yoshida, Susumu; Ikegami, Fumio; Ariyavisitakul, Sirikiat
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital communication device includes first and second systems in a transmitter of a base station and first and second systems in a receiver of the base station. Inserted in the first system of the transmitter and the first system of the receiver are delay circuits for ensuring a delay time difference between D and U waves, which difference is employed to obtain an improved bit error rate when utilizing a communication system such as a DSK system, a BPSK-RZ system or a QPSK-RZ system.
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 March 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
- 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.