Velocity, position and direction-tracking sensor for moving components of musical instruments
US5237123A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Feb 6, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/07
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.