Radio data transmission system
CA 1259658 A · Owner: Fujitsu Limited · Inventors: Minowa, Morihiko; Takenaka, Sadao; Aono, Yoshihito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a radio transmission system using multi-value amplitude modulation. The invention aims at realizing with a simple circuit fine and stable switching control for the control mode of a transversal type automatic equalizer used in the transmission system. Another aim is the reduction of the hysteresis of distortion resistance frequency characteristic. In the transmitter the n-bit data is converted to a multi-value signal. In the receiver, the multi-value signals obtained by detecting and modulating the received signal is discriminated and converted to m bits more than the original n-bit data. The m bits can be used to generate pseudo error pulses the generating frequency of …
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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
- Granted September 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 2006.
- 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.