Piano-like keyboard musical instrument for automatically playing music through feedback control with key acceleration and key velocity
US5530198A · kind A · utility
21Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Dec 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10F1/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An automatic player piano is implemented by a combination of an acoustic piano and an automatic playing system, and a velocity feedback loop and an acceleration feedback loop control solenoid-operated key actuator units for reproducing a performance so that the acceleration feedback loop cancels the undesirable increment of the resistances of the solenoid coils and aged deterioration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.