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| Patent ID | Title | Date Filed |
| 5455379 | Adaptive chord generating apparatus and the method thereof
| November 16, 1992 |
| 5451709 | Automatic composer for composing a melody in real time
| December 29, 1992 |
| 5442129 | Method of and control system for automatically correcting a pitch of a musical instrument
| January 14, 1993 |
| 5440756 | Apparatus and method for real-time extraction and display of musical chord sequences from an audio signal
| September 28, 1992 |
| 5440071 | Dynamic chord interval and quality modification keyboard, chord board CX10
| February 18, 1993 |
| 5418326 | Automatic accompaniment instrument for automatically performing an accompaniment that is based on a chord progression formed by a sequence of chords
| November 24, 1993 |
| 5412156 | Automatic accompaniment device having a function for controlling accompaniment tone on the basis of musical key detection
| October 12, 1993 |
| 5410098 | Automatic accompaniment apparatus playing auto-corrected user-set patterns
| August 30, 1993 |
| 5403966 | Electronic musical instrument with tone generation control
| March 29, 1993 |
| 5347083 | Automatic performance device having a function of automatically controlling storage and readout of performance data
| July 23, 1993 |
| 5331112 | Apparatus for cross-correlating additional musical part to principal part through time
| January 21, 1993 |
| 5322966 | Electronic musical instrument
| December 20, 1991 |
| 5319152 | Chord information output apparatus and automatic accompaniment apparatus
| July 27, 1993 |
| 5302777 | Music apparatus for determining tonality from chord progression for improved accompaniment
| June 26, 1992 |
| 5298677 | Automatic playing apparatus having reduced memory requirements
| August 28, 1992 |
| 5296644 | Chord detecting device and automatic accompaniment device
| July 24, 1992 |
| 5283389 | Device for and method of detecting and supplying chord and solo sounding instructions in an electronic musical instrument
| April 17, 1992 |
| 5278348 | Musical-factor data and processing a chord for use in an electronical musical instrument
| January 31, 1992 |
| 5274192 | Instrument for recording and playing back musical playing data
| October 8, 1991 |
| 5270479 | Electronic musical instrument with chord accompaniment stop control
| July 9, 1992 |
| 5260510 | Automatic accompaniment apparatus for determining a new chord type and root note based on data of a previous performance operation
| February 27, 1992 |
| 5260509 | Auto-accompaniment instrument with switched generation of various phrase tones
| July 28, 1992 |
| 5250746 | Chord detecting apparatus
| April 9, 1992 |
| 5235126 | Chord detecting device in an automatic accompaniment-playing apparatus
| February 20, 1992 |
| 5235125 | Apparatus for cross-correlating additional musical part with principal part through time
| September 25, 1990 |
| 5223655 | Electronic musical instrument generating chord data in response to repeated operation of pads
| March 20, 1991 |
| 5221802 | Device for detecting contents of a bass and chord accompaniment
| May 28, 1991 |
| 5218157 | Auto-accompaniment instrument developing chord sequence based on inversion variations
| July 30, 1992 |
| 5218153 | Technique for selecting a chord progression for a melody
| August 26, 1991 |
| 5216188 | Automatic accompaniment apparatus
| February 27, 1992 |
| 5214993 | Automatic duet tones generation apparatus in an electronic musical instrument
| March 4, 1992 |
| 5214230 | Musical tone data compensation apparatus
| August 15, 1991 |
| 5206447 | Electronic musical instrument having an ad-libbing function
| December 1, 1989 |
| 5202526 | Apparatus for interpreting written music for its performance
| December 17, 1991 |
| 5179241 | Apparatus for determining tonality for chord progression
| April 5, 1991 |
| 5166465 | Duet-sound generating method for an electronic musical instrument
| October 20, 1989 |
| 5159141 | Apparatus for controlling reproduction states of audio signals recorded in recording medium and generation states of musical sound signals
| April 16, 1991 |
| 5153361 | Automatic key designating apparatus
| September 21, 1989 |
| 5136914 | Stringed instrument emulator and method
| April 2, 1991 |
| 5101707 | Automatic performance apparatus of an electronic musical instrument
| February 1, 1991 |
| 5088380 | Melody analyzer for analyzing a melody with respect to individual melody notes and melody motion
| May 17, 1990 |
| 5085118 | Auto-accompaniment apparatus with auto-chord progression of accompaniment tones
| December 19, 1990 |
| 5070758 | Electronic musical instrument with automatic music performance system
| May 15, 1989 |
| 5056401 | Electronic musical instrument having an automatic tonality designating function
| July 20, 1989 |
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