Circuit system for reproducing a signal from a moving record carrier
CA 1112360 A · Owner: Sony Corporation · Inventors: Takahashi, Hiroo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A signal reproducing circuit system for reproducing a signal read out from a moving record carrier such as a rotatable disc, including an automatic gain control circuit loop using a conventional gain control amplifier and a variable gain amplifier provided with a variable gain-frequency characteristic which is supplied with a gain control signal generated in the automatic gain control circuit loop to be controlled thereby the gain-frequency characteristic so as to compensate for variations in the level of the read out signal introduced due to the shift of a reading out position on the carrier..
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 November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
- 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.