Apparatus for reproducing a magneto-optical disk
CA 1310120 C · Owner: Ogawa, Hiroshi · Inventors: Ogawa, Hiroshi; Horimai, Hideyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for reproducing a magneto-optical disk which is adapted to intermittently irradiate a magneto-optical disk with a light beam emitted from a laser light source at a predetermined sampling period detect a, polarized component of the light beam emitted from the laser light source and reflected from the disk by detecting elements, derive the reproduced output of an information signal recorded on the magneto-optical disk by taking the difference between the detected outputs from the respective detecting elements, and in which there is provided a random noise removing circuit at the rear stage of the detecting elements for removing photo-electric converting noises generated in the …
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, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 2009.
- 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.