The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2007
Filed:
Mar. 20, 2006
Mark Van Sant, Oregon House, CA (US);
Mark Van Sant, Oregon House, CA (US);
Burgett, Inc., Sacramento, CA (US);
Abstract
A method of utilizing previous event feedback information from historical derived hammer velocity data, such as associated with a MIDI record function, for providing non-real-time feedback when controlling actuators. The use of non-real-time feedback within the present invention provides a number of advantages over the use of conventional real-time feedback mechanisms. Utilization of the non-real-time (historical) key actuation information reduces the amount of circuitry necessary for correcting the operation of the actuators (i.e. solenoids) during playback on the instrument. By way of example, a programmable circuit element receives velocity information on previous key strikes for adjusting the actuator velocity output signal which will be generated for future key strikes. The accuracy of key strike normalization provided by this method approaches that which is achievable using real-time feedback, because the velocity profiles for each key remain substantially constant during playback.