Music – Instruments
Patent
1977-01-31
1978-11-21
Weldon, Ulysses
Music
Instruments
84 117, 84 111, 84 119, 84 124, 84DIG7, 84DIG19, G10H 100
Patent
active
041260708
ABSTRACT:
The hand-held instrument is preferably supported by a strap from the neck for one or two handed playing of a keyboard with switch and potentiometer controls of a remote synthesizer which may be basically of conventional design and include a plurality of output voice means. A lightweight keyboard assembly is mounted within an elongated premolded housing having a control panel comprised of control switches and light indicators. The instrument is preferably for playing by the right hand, and for the purpose of holding and controlling the stability of the instrument, the housing is formed with a left hand gripping hole or slot permitting the instrument to be firmly gripped. Adjacent the hole there are provided additional control knobs and push button switches which are easily operated by the left hand without any repositioning of the hand. An umbilical cord interconnects the hand supported keyboard musical instrument and the synthesizer apparatus. The control wires forming the umbilical cord are minimized by electronically scanning the keyboard by serially addressing each key to provide a serial pulse train representing the state of all keys. The control wiring is also minimized by tthe electronic scanning of each control switch in sequence to provide a further serial pulse train representing the state of all switches. The keyboard assembly fits within an opening in the housing and is of relatively simple and lightweight construction using optical interruptor means for sensing key depression rather than using mechanical contact sensing means.
REFERENCES:
patent: 2641753 (1953-06-01), Oliwa
patent: 3011379 (1961-12-01), Corwin
patent: 3335629 (1967-08-01), Brodin
patent: 3514522 (1970-05-01), Mussulman
patent: 3541912 (1970-11-01), Radke
patent: 3555166 (1971-01-01), Gasser
patent: 3610799 (1971-10-01), Watson
patent: 3740448 (1973-06-01), Olszowka et al.
patent: 3835235 (1974-09-01), Amano
patent: 3875842 (1975-04-01), Kmetz
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