Music – Instruments
Patent
1976-12-17
1978-07-11
Weldon, Ulysses
Music
Instruments
84 103, 84423, 84424, 84462, 84 17, G10H 100
Patent
active
040994376
ABSTRACT:
A musical instrument which comprises (i) a portable transmitter unit, (ii) a receiver unit, and (iii) a standard or modified piano, electronic organ, or other keyboard musical device. The transmitter unit has sixty keys, each of which corresponds to a key of the remote piano, organ, or other keyboard musical device, and also has eight auxiliary switches for controlling the receiver and auxiliary functions of the musical device to be remotely played. The transmitter includes electronic circuitry which scans the keys and auxiliary switches, and transmits an FM signal modulated by a serial digital pulse train identifying the transmitter keys which are depressed and the auxiliary switches which have been actuated. The receiver unit decodes the transmitted pulse train, eliminates erroneous data, and generates output signals to control the corresponding keys and auxiliary functions. The transmitter circuitry contains means for incorporating features in the digital code utilized which provide increased noise immunity and alleviate the need for the receiver to handle very low frequencies of the demodulated signal.
REFERENCES:
patent: 3085460 (1963-04-01), Edwards
patent: 3531631 (1970-09-01), Burgess
patent: 3541912 (1970-11-01), Radke
patent: 3604299 (1971-09-01), Englund
patent: 3705948 (1972-12-01), Tomisawa
patent: 3899951 (1975-08-01), Griffith et al.
patent: 3969968 (1976-07-01), Clark, Jr. et al.
Slack William Frederick
Stavrou Paul Constantine
Lessler Arthur L.
Noury, Jr. Jerry L.
Weldon Ulysses
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