Digital-to-analog converter
CA 1259705 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Ando, Hideki; Miki, Takahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital-to-analog converter includes a plurality of constant current sources (401 - 407) arrayed in a prescribed order and connected with a grounding lead wire (70). The respective constant current sources (401 - 407) are selectively connected to a first bus (303) by corresponding switches (501 - 507), respectively. A decoder (2) outputs switching signals to the switches (501 - 507). The switching signals are outputted from the decoder (2) to the switches (501 - 507) so that the constant current sources symmetrically positioned with respect to the center of an array of the plurality of constant current sources (401 - 407) are sequentially connected to the first bus (303). Thus the, …
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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.