Multiple card recording system
CA 1292312 C · Owner: Haddock, Richard · Inventors: Haddock, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data card recording system having a rotatable drum for supporting a plurality of data cards on its circumferential surface. A laser light source emits a beam which is modulated in response to data and directed to the cards on the rotating drum. The beam produces data spots in a plurality of parallel tracks aligned in the direction of drum rotation. The focussing optics may be moved transversely to record in adjacent tracks. A data segment accessed from a data source and stored in a register of a microprocessor is recorded on a track on each card on the drum. A data control, controlling modulation rate, and a position detector unit are provided to synchronize the light beam modulation with …
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 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
- 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.