Optical modulation system
CA 1237778 A · Owner: Sony Corporation · Inventors: Kuwabara, Shinichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical modulation system is disclosed which, comprises an electro-optic modulator for modulating a laser beam according to a modulation signal a photo-, electric transducing means for transducing the output light of the electro-optic modulator into an electrical signal, a control circuit capable of switching of the polarity of a voltage applied to the modulator an, oscillator for supplying a reference oscillation signal to the control circuit, and a phase synchronizing detector for synchronously detecting the output signal of the photo-electric transducing means.
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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.