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| Number | Title | Issue Date |
| 4220068 | Method and apparatus for rhythmic note pattern generation in electronic organs A circuit for an electronic organ for producing rhythmic patterns of notes in accordance with the selection of a chord in the accompaniment manual. The organ includes an accompaniment manual and a solo manual, either or both of which may be electronically... | 09/02/1980 |
| 4197777 | Automatic chord control circuit for electronic musical instruments An automatic chord control system is readily incorporated in an electronic organ by means of large scale integrated circuit chips. The automatic chord control causes a chord or group of notes within an octave played on the lower manual keyboard to play th... | 04/15/1980 |
| 4186636 | Digital chord generation for electronic musical instruments An electrical musical instrument having a digital circuit which automatically generates selected chordally related tone signals in response to manual selection of a root note. A root encoder provides a binary code representative of the root note in respon... | 02/05/1980 |
| 4185530 | Automatic glissando A circuit intended for use with electronic organs and, more specifically, with those electronic organs in which the keyboard switches are multiplexed, and which circuit provides a method for automatically sounding in succession either the natural notes (w... | 01/29/1980 |
| 4179970 | Automatic arpeggio for multiplexed keyboard The present invention is an arpeggio system for use in a musical instrument having a multiplexed keyboard, wherein operated playing keys are represented by cyclic pulses in corresponding time slots in a serial time division multiplex data format, connecte... | 12/25/1979 |
| 4178823 | Portable electronic musical instrument An electronic musical instrument has a keyboard including a plurality of scale keys and a plurality of chord keys. Musical sounds are generated by a programmable frequency divider network capable of producing different output frequencies, depending on whi... | 12/18/1979 |
| 4176576 | Electronic musical instrument An electronic musical instrument in which a keyboard circuit generates scale tone voltage signals corresponding to depressed keys of a keyboard. Plural musical tone signal forming sections are connected respectively to plural output terminals of the keybo... | 12/04/1979 |
| 4140039 | Hand held synthesizer A sophisticated polyphonic instrument providing both additive and subtractive tone synthesis capabilities for generating a myriad of timbres, yet occupying a volume comparable to a toy accordion, is described. The unusually broad capabilities, for a small... | 02/20/1979 |
| 4117759 | Apparatus for forming chord signal An arrangement for forming a musical chord signal in which there are provided a frequency divider for root, a frequency divider for minor third, a frequency divider for major third and a frequency divider for fifth or a frequency divider for seventh. Thes... | 10/03/1978 |
| 4117758 | Binary word debouncer A special circuit arrangement intended for use with electronic organs and the like, and particularly intended for use with electronic organs having playing key operated switches and in which at least a portion of the switches actuated by keys of a keyboar... | 10/03/1978 |
| 4112802 | Organ circuitry for providing fill notes and method of operating the organ An organ circuitry for providing fill notes and a method of operating the organ in which a circuit is provided which adds fill notes automatically in the multiplexed solo manual of an electronic organ, by detecting the first pulse encountered by the multi... | 09/12/1978 |
| 4100831 | Automatic digital circuit for generating chords in a digital organ An automatic chord generating circuit for a digital polyphonic tone synthesizer having one or more keyboards. Key operated switches are connected in groups corresponding to the notes in an octave. A signal source is selectively connected by the closed swi... | 07/18/1978 |
| 4065993 | Electronic organ with a three-finger chord and one-finger automatic chord playing mode selector An electronic organ provided with a selector for selecting a three-finger chord playing mode or a one-finger chord playing mode. When the three-finger chord playing mode is selected, a chord is sounded by three or four fingers on a manual keyboard or lowe... | 01/03/1978 |
| 4000674 | One key chording system for an electronic keyboard instrument A one key chording system for an electronic keyboard instrument of the type in which a single contact keyboard for DC keying of tone signals is employed. A primary keying signal from the single contact keyboard operates one of a plurality of chord gates t... | 01/04/1977 |
| 3990339 | Electric organ and method of operation An electric organ with logic circuitry incorporated therein which will automatically cause "fill notes" to sound in the solo part of a composition being played with the fill notes being harmonically consistant with the notes being played in the solo part ... | 11/09/1976 |
| 3986424 | Automatic rhythm-accompaniment apparatus for electronic musical instrument An automatic rhythm accompaniment apparatus for an electronic musical instrument is characterized in that the same comprises a plurality of chord-memory circuits which detect and memorize respective first tones in respective bars of a melody played by the... | 10/19/1976 |
| 3967520 | Guitar chording device for keyboard instruments A keyboard input such as the lower manual of an organ includes a plurality of keys covering one or more octaves. A plurality of note sources are provided which can produce the essential notes required for open harmony presentation of the various chords of... | 07/06/1976 |
| 3962945 | Foot actuated electronic organ A musical instrument including an electronic organ provided with sound generators of an upper manual, a lower manual, a bass and a rhythm section. The sound generators are connected electrically to control switches in a console, these control switches bei... | 06/15/1976 |
| 3954039 | Chord selection system for a musical instrument A keyboard electronic musical instrument includes a plurality of playing keys, each of which are capable of coupling a set of chord tone signals to an output utilization circuit. These chord tone signals comprise the root and fifth parts and also the majo... | 05/04/1976 |
| 3941023 | Chord button assembly A chord button assembly for use in electronical organs is formed as a unitary assembly. A plastic hinge strip extending the length of the chord selector button area is provided and a plurality of keys or arms extend from the strip and have selector button... | 03/02/1976 |
