Mobile karaoke system, method used provide electromagnetic compatibility for mobile karaoke system, mobile wireless transmitting device for it, cartridge for it, method used to prevent usage of unauthorized cartridge in it and method to prevent unauthorized accessed to the data stored in it
CA 2339830 C · Owner: Alekseevna, Agadzhanova Marina · Inventors: Shoel-Berovich, Rovner Yakov; Alekseevna, Agadzhanova Marina
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mobile karaoke system shall mix signal from external audio input such as , voice of a, singer who performs a song to a microphone with musical accompaniment data , that is prestored in ROM package and generates a signal for transmission to a radio. The specific, feature of this technical approach is that the mobile wireless transmitter for karaoke system, shall be upgraded with auxiliary decoder for communication with cartridge via interface, connector, and the cartridge is equipped with key identification and coding device that is, linked to the Read-Only-Memory and can communicate with auxiliary decoder of the, transmitter via interface connector. Transmission to the receiver shall …
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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
- Filed January 18, 2000 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2022.
- 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
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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.