Method and apparatus for optically determining note characterist

Music – Accessories – Recording devices

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

84658, G10D 304

Patent

active

058410503

ABSTRACT:
A method and apparatus for accurately sensing key motion in a keyboard operated musical instrument, in which optical emitters and sensors are positioned adjacent to the keys. The optical emitters and sensors are arranged on a plurality of individually addressable sensor boards, and the sensor boards are divided into a plurality of individually addressable sensor banks. Each sensor board is independently and sequentially activated by a controller according to a specified timing sequence. As the controller activates a sensor board in one bank, allowing the board to warm up, another sensor board in the second bank, which has previously been activated and warmed up, is read and analyzed by the controller. Activation and reading of sensor boards alternates between sensor banks as the sensor boards are sequenced through. This overlapping of sensor board activation and reading, which is made possible by the preferred arrangement of the dual sensor banks as well as the data acquisition method employed, provides for a higher throughput of data conversion than has been heretofore achieved, and thus more efficient sensing and recording of musical expression information from keyboard instruments than has been previously attained.

REFERENCES:
patent: 3511569 (1970-05-01), Mackta
patent: 3617627 (1971-11-01), McLean
patent: 3799671 (1974-03-01), Schweizer
patent: 3900262 (1975-08-01), Baxter
patent: 4037511 (1977-07-01), Del Castillo
patent: 4362934 (1982-12-01), McLey
patent: 4468999 (1984-09-01), Bonanno
patent: 4674069 (1987-06-01), Mizuno
patent: 4686880 (1987-08-01), Salani et al.
patent: 4736662 (1988-04-01), Yamamoto
patent: 4790230 (1988-12-01), Sanderson
patent: 4970928 (1990-11-01), Tamaki
patent: 5194685 (1993-03-01), Kawamura et al.
patent: 5200562 (1993-04-01), Kaneko et al.
patent: 5237125 (1993-08-01), Fields
patent: 5451708 (1995-09-01), Fujiwara et al.
patent: 5567902 (1996-10-01), Kimble et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for optically determining note characterist does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for optically determining note characterist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for optically determining note characterist will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1704911

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.