Velocity, position and direction-tracking sensor for moving comp

Details Velocity, position and direction-tracking sensor for moving comp Velocity, position and direction-tracking sensor for moving comp

1991-02-06

1993-08-17

Shoop, Jr., William M.

Music

Instruments

Automatic

84DIG7, 84626, 84462, G10F 102, G10G 304, G10H 102, G10H 700

Patent

active

052371239

ABSTRACT:
In order to obtain speed and position information about a moving component of a musical instrument a fin extending in the direction of travel of the moving component is coupled thereto as, for example, by affixing the fin to the hammer shank of a piano. The fin carries indicia, such as a bar code, which can be read, for example, by an optical or magnetic sensor assembly. In one embodiment, a pair of side-by-side indicia bands are carried on the fin with the bands slightly offset in the direction of travel in order that direction, as well as speed and position information can be obtained. The gathered data may include information recorded, for example, for all the notes and the pedals of a piano in order that a performance may be reconstructed and played back employing a solenoid stack or the like.

REFERENCES:
patent: 4351221 (1982-09-01), Starnes et al.
patent: 4593592 (1986-06-01), Stahnke
patent: 4736662 (1988-04-01), Yamamoto
patent: 4913026 (1990-04-01), Kaneko et al.
patent: 5012086 (1991-04-01), Barnard
patent: 5022301 (1991-06-01), Stahnke

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