Synchronized lyric display device
CA 2058668 C · Owner: Tsumura, Mihoji · Inventors: Tsumura, Mihoji; Taniguchi, Shinnosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The purpose of the invention is to ensure that when digitally coded music is being reproduced as audio signals and lyrics are being displayed on a screen that the progress of the two operations is synchronized. To this end music reproduction data is processed for reproduction in accordance with division values calculated on the basis of tempo data contained in the said music reproduction data while synchronization with the current position in the lyrics, which are displayed on a visual display unit, is advanced in accordance with values derived through multiplication of the aforementioned division values by a constant factor, thereby ensuring the synchronization of the reproduction of 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
- Filed December 31, 1991 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 2013.
- 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.