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| Number | Title | Issue Date |
| 7321530 | Decoder circuit, and photo-detecting amplifier circuit and optical pickup including the decoder circuit for disk recording/reproducing apparatus A decoder circuit of the present invention, mounted on an integrated circuit, decodes input voltage Vin supplied to a single external input terminal into three or more control outputs, and an object of the present invention is to reduce the size of a chip. The foreg... | 01/22/2008 |
| 6444891 | Electronic guitar with its keys arranged in complex array Electronic guitar including a case, a keyboard, a sound synthesis electronic assembly and an output line. The keyboard is divided into an upper keyboard arranged on a neck of the case and a lower keyboard arranged on a body of the case. The upper and lowe... | 09/03/2002 |
| 4481851 | Tone generator assignment system for an electronic musical instrument An electronic musical instrument includes a keyboard having a plurality of keys, each depressed key being identified by a uniquely developed multibit code. Each of a plurality of tone generators, substantially less in number than the number of keys charac... | 11/13/1984 |
| 4463647 | Musical instrument Clavier multiplexing is used in the present keyboard musical instrument to reduce the number of sound generators needed by connecting them only to those notes that are depressed. The association of a tone generator with a control unit, which provides the ... | 08/07/1984 |
| 4424732 | Electronic musical instrument with intermanual performance faculty An electronic musical instrument includes an upper, lower and pedal key boards and a solo keyboard, key switches and associated circuits for producing key codes of the depressed keys, and musical tone signal generators which generate musical tone signals ... | 01/10/1984 |
| 4387618 | Harmony generator for electronic organ A harmony generator for an electronic organ, wherein the identity of played keys of the keyboard(s) is read into a storage device and then operated upon by a data processing device such as a microcomputer, so as to supplement the played note data with add... | 06/14/1983 |
| 4384506 | Polyphonic electronic musical instrument producing prominent solo tone An electronic musical instrument of a polyphonic type comprises, first tone generating means capable of producing, in a first musical tone property, a plurality of musical tones respectively corresponding to a plurality of depressed keys, and further comp... | 05/24/1983 |
| 4353278 | Chord generating apparatus of electronic musical instrument A chord generating apparatus of an electronic musical instrument is provided with a selector which selects a single key among a plurality of depressed keys, a detector for detecting a chord type according to types of keys other than the selected key, and ... | 10/12/1982 |
| 4335639 | Preferential circuit for electronic musical instrument A preferential circuit for an electronic musical instrument is provided in which a memory circuit is employed to memorize a key data signal corresponding to the last depressed key and at least one key data signal corresponding to the second last depressed... | 06/22/1982 |
| 4321850 | Electronic musical instrument with highest priority key tone production An electronic musical instrument having a plurality of keys is provided with a depressed key detector which detects depressed keys and produces key identifying signals; a highest signal detector which detects a highest one among the key identifying signal... | 03/30/1982 |
| 4306480 | Electronic musical instrument An electronic musical instrument having a fret board and a plurality of conductive frets may be coupled to a resistance ladder of discrete resistive elements. A conductive wire or a plurality of such wires selectively making contact with at least one of t... | 12/22/1981 |
| 4282787 | Electronic musical instrument simultaneously operable in monophonic and polyphonic modes An electronic musical instrument having combined monophonic and polyphonic sound producing capabilities includes a keyboard simultaneously operating a monophonic tone signal generating circuit and a polyphonic tone signal generating circuit. The tone sign... | 08/11/1981 |
| 4276801 | Pedal actuated musical chord system A musical chord system includes a pedal console comprising a plurality of foot-actuated pedal switches, a chord selection switch console comprising a plurality of chord selection switches associated with said pedal switches, and diode matrix logic means i... | 07/07/1981 |
| 4271743 | Envelope signal generator An envelope signal generator which has a key depression/release signal generator for producing different output levels in response to key depression and key release, a switching circuit which is set to a first output level upon key depression and set to a... | 06/09/1981 |
| 4238985 | Electronic musical instrument An electronic musical instrument of a type capable of producing a musical tone corresponding to the tone pitch of a depressed key by controlling oscillation frequency of a voltage-controlled type oscillator by a pitch voltage corresponding to the tone pit... | 12/16/1980 |
| 4235141 | Electronic apparatus An apertured insulating strip permits closing a circuit only at contact points defined by the apertures between a low resistance conductor and a high resistance conductor in an electronic circuit of the type which produces musical notes each having a freq... | 11/25/1980 |
| 4215615 | Monolithic integrated selection circuit The circuit enables the selection of the upper or the lower tone of an electronic organ chord with regard to a switching signal. In response to said switching signal each tone frequency signal handled is either fed to the anode or the cathode of a switch ... | 08/05/1980 |
| 4204452 | Single key preferential selection device in electronic musical instrument A monophonic electronic musical instrument comprises a single key preferential selection device. Key switches are connected in a matrix fashion between the group lines and the individual lines. The group lines are sequentially and repetitively scanned to ... | 05/27/1980 |
| 4203340 | Electronic musical instrument An electronic musical instrument includes a tone signal generator whose operation is controlled by active electronic signal processing. The instrument includes both tone effect control means to provide an alternating current control signal to the tone sig... | 05/20/1980 |
| 4194425 | Key code generator In a key code generator which has key code generator circuits, each corresponding to one of a plurality of key switches and composed of a memory circuit for storing the status of the key switch with a master clock pulse, a circuit for detecting the status... | 03/25/1980 |
| 4192212 | Electronic musical instrument with automatic performance device A keyboard electronic musical instrument comprises a note information processing device capable of processing note information required for automatic arpeggio and automatic bass performances. This note information processing device includes a generation c... | 03/11/1980 |
| 4182211 | Information transmission system An information transmission system for N information signals for the transmission of either N parallel signals, or of only one information signal from a signal range of M signals with MࣘN at the upper or lower range boundary. N signal transmission gates... | 01/08/1980 |
| 4179969 | Tone generator for electrical music instrument In a tone generating apparatus for an electrical music instrument having an array of switches corresponding to respective keys of a keyboard and which are selectively actuable by manipulation of the respective keys, a timing signal generator, preferably i... | 12/25/1979 |
| 4170160 | Electronic musical instrument An electronic musical instrument includes a linear voltage divider network including a plurality of equal series resistance elements for generating a first output voltage as a function of the state of a plurality of tone select keys. This first voltage is... | 10/09/1979 |
| 4162644 | Automatic rhythm accompaniment apparatus in an electronic organ An automatic accompaniment apparatus in an electronic organ having a keyboard for melody provided with a plurality of key switches for accompaniment, respective ends of the key switches being connected to a voltage generating circuit and respective opposi... | 07/31/1979 |
| 4142434 | Circuit arrangement for electronic musical instruments In an electronic musical instrument with two tone generators of which the frequency of the tones produced by them is substantially constant for the first generator a priori and for the second generator not until after a final value is reached which corres... | 03/06/1979 |
| 4138917 | Key code generator A key code generator for electronic musical instruments which has a switch matrix circuit having a plurality of switches disposed at the intersections of two sets of buses, means for simultaneously applying signals to the switch matrix circuit from one of... | 02/13/1979 |
| 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 |
| 4098162 | Synthesizer type electronic musical instrument An electronic musical instrument includes a pitch determining voltage signal generating circuit adapted to produce one of 12 pitch determining voltage signals having different magnitudes corresponding to 12 notes in one octave in response to any of keys b... | 07/04/1978 |
| 4064777 | Circuit for preferentially selecting highest and lowest tones A circuit in an electronic keyboard musical instrument for preferentially selecting the highest and lowest tones from among the tones in chords produced by keys on the keyboard which have been struck. The circuit has a set of series connected resistors ha... | 12/27/1977 |
| 4056996 | Electronic music system A monophonic system includes means for voicing only tones derived in response to depression of a key associated with the highest pitched note when several keys are struck at approximately the same time, regardless of the order in which the keys are struck... | 11/08/1977 |
| 4054078 | Automatic arpeggio electronic musical instrument An automatic arpeggio musical instrument includes a pulse generator having a plurality of keys for generating periodic pulses by depression of one of the keys, each of the keys generating a voltage, a timing pulse generator connected to the pulse generato... | 10/18/1977 |
| 3999458 | Electronic musical instrument having preset arrangement with one group of switches controlling two groups of memories An electronic musical instrument comprising first and second musical tone signal synthesizing circuit arrangements including voltage waveform generators adapted to control first and second tone signals to be generated by the first and second musical tone ... | 12/28/1976 |
| 3991645 | Electronic musical instrument with exponential keyboard and voltage controlled oscillator An electronic musical instrument includes an oscillator for generating a signal at a frequency corresponding to that associated with a depressed key of the keyboard. The key selects a control voltage, from an exponential voltage divider, for controlling t... | 11/16/1976 |
| 3986425 | Bass signal control circuit This invention relates to a circuit for use in an electronic musical instrument such as an organ, the instrument having two separate sources of bass signals and transducing elements for converting the bass signals into a sound output. The circuit is opera... | 10/19/1976 |
| 3981217 | Key assigner A key assigner for use in an electronic musical instrument is capable of detecting changes in key switches by comparing present ON-OFF states of the key switches with previous ON-OFF states thereof. Only one of detection signals is delivered out by a prio... | 09/21/1976 |
| 3978754 | Voltage controlled type electronic musical instrument This invention provides an electronic musical instrument comprising a keyboard circuit for producing a pitch determining voltage signal representing the note of an operated key, a voltage controlled oscillator for producing a tone signal having a tone pit... | 09/07/1976 |
| 3952624 | Electronic musical instrument capable of generating tone signals having pitch frequency, tone color and volume envelope varied with time An electronic musical instrument comprising a voltage controlled oscillator, a voltage controlled filter, a voltage controlled amplifier and envelope generators. An output envelope of the envelope generator has various parameters such as rise time and dec... | 04/27/1976 |
| 3948137 | Pitch determining voltage signal generating circuit for a voltage controlled type electronic musical instrument This invention is directed to a keyboard circuit for generating pitch determining voltage signals whose voltage values exponentially vary with respect to notes. Key switches are connected between a DC voltage source and a voltage dividing resistance netwo... | 04/06/1976 |
