Patent US3565995A successfully refreshed from Google Patents.
US3565995A
Expired / Lapsed
US
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Electronic organ employing automatic coupling of solo and accompaniment notes
Assignee: Baldwin Piano and Organ Co
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Filing: 1968-10-17
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Granted: 1971-02-23
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Expires: 1988-10-17
Abstract
Abstract An array of tone signal sources is controlled by solo keys and by accompaniment keys for transfer respectively to solo tonecolor filters and accompaniment filters, and thence to a loud speaker, in the manner usual in electronic organs. Tones collected in response to actuation of accompaniment keys are also applied to the input of a normally inhibited gate having its output connected to solo filters. Actuation of any one or more of the solo keys uninhibits the gate, selectively either transiently or for the duration of the actuation, by generating appropriate gate control pulses. A second normally inhibited gate is paralleled to the first gate, and similarly controlled, but its input circuit is a further gate which is supplied with reiteration voltage.
Inventors
- 👤 David A Bunger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/18; G10H1/26; G10H1/30
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
232 words
In an electronic organ having a gamut of tone signal sources, a first keyboard, a second keyboard, a first tone-color filter, a second tone-color filter, an output system, a first key switch operable by a key in said first keyboard and coupled between one of said sources and said output system via said first tone-color filter, a second key switch operable by a key in said second keyboard and coupled between another of said sources and said output system via said second tone-color filter the combination comprising: a direct current supply; an auxiliary key switch ganged to said first key switch; a trigger and pulse-shaping circuit means coupled between said auxiliary key switch and said direct current supply and responsive to closure of said auxiliary key switch for generating a control pulse; and a normally-inhibited gate coupled to said trigger and pulseshaping circuit, and responsive to said control pulse to uninhibit said gatE, said gate being also coupled between said second key switch and to said first tone-color filter, whereby actuation of said key in said first keyboard closes said auxiliary key switch creates a pulse in said trigger and pulseshaping circuit operative to uninhibit said gate so as to cause a signal to flow between said other source and said output system via said second key switch and said first tone-color filter when said key in said second keyboard is actuated.
Claim 2
Dependent Claim
232 words
In an electronic organ having a gamut of tone signal sources, a first keyboard, a second keyboard, a first tone-color filter, a second tone-color filter, an output system, a first key switch operable by a key in said first keyboard and coupled between one of said sources and said output system via said first tone-color filter, a second key switch operable by a key in said second keyboard and coupled between another of said sources and said output system via said second tone-color filter the combination comprising: a direct current supply; an auxiliary key switch ganged to said first key switch; a trigger and pulse-shaping circuit means coupled between said auxiliary key switch and said direct current supply and responsive to closure of said auxiliary key switch for generating a control pulse; and a normally-inhibited gate coupled to said trigger and pulseshaping circuit, and responsive to said control pulse to uninhibit said gatE, said gate being also coupled between said second key switch and to said first tone-color filter, whereby actuation of said key in said first keyboard closes said auxiliary key switch creates a pulse in said trigger and pulseshaping circuit operative to uninhibit said gate so as to cause a signal to flow between said other source and said output system via said second key switch and said first tone-color filter when said key in said second keyboard is actuated.
Claim 3
Dependent Claim
176 words
The combination according to claim 1, including: a third tone-color filter; a third key switch operable by said key in said first keyboard and coupled between a further one of said sources and said output system via said third tone-color filter; a fourth tone-color filter; a fourth key switch operable by said key in said second keyboard and coupled between one of said sources and said output system via said fourth tone-color filter; and a second normally-inhibited gate coupled to said trigger and pulse-shaping circuit, and responsive to said control pulse to uninhibit said gate, said second gate being coupled between said fourth key switch and said third tone-color filter, whereby actuation of said key in said first keyboard closes said auxiliary key switch, thereby creating a pulse in said trigger and pulse-shaping circuit operative to uninhibit said second gate and to cause a signal to flow between said one of said sources and said output system via said fourth key switch and said third tone-color filter, when said key in said second keyboard is actuated.
Claim 4
Dependent Claim
50 words
The combination according to claim 1, including a reiteration gate coupled between said second key switch and said second normally-inhibited gate; a reiteration oscillator coupled to said reiteration gate for rendering said reiteration gate reiteratively inhibited and uninhibited; and switch means coupled between said reiteration gate and said reiteration oscillator.
Claim 5
Dependent Claim
20 words
The combination according to claim 3 wherein said reiteration oscillator includes means for at altering the rate of oscillation thereof.
Claim 6
Independent Claim
65 words
The method of automatically coupling a signal derived from closing a key switch in one keyboard to a tone-color filter for another keyboard which comprises: deriving a pulse from depression of any key in said other keyboard; amplifying and shaping said pulse; and applying said pulse to uninhibit a normally inhibited gate operative between said key switch in said one keyboard and said tone-color filter.
Claim 7
Independent Claim
65 words
The method of automatically coupling a signal derived from closing a key switch in one keyboard to a tone-color filter for another keyboard which comprises: deriving a pulse from depression of any key in said other keyboard; amplifying and shaping said pulse; and applying said pulse to uninhibit a normally inhibited gate operative between said key switch in said one keyboard and said tone-color filter.
Claim 8
Dependent Claim
122 words
In an electronic organ; a series of tone signal sources; an array of solo keys; an array of accompaniment keys; a solo tone color filter; an accompaniment tone-color filter; a loudspeaker system connected in cascade with said tone-color filters; means responsive to actuation of selected ones of said solo keys for connecting corresponding ones of said tone signal sources to said solo tone-color filters; means responsive to actuation of selected ones of said accompaniment keys for connecting corresponding ones of said tone signal sources to said accompaniment tone-color filter; and gate means responsive to actuation of any one or more of said solo keys for connecting tone signal sources called for only by the actuated accompaniment keys to said solo tone-color filter.
Claim 9
Dependent Claim
122 words
In an electronic organ; a series of tone signal sources; an array of solo keys; an array of accompaniment keys; a solo tone color filter; an accompaniment tone-color filter; a loudspeaker system connected in cascade with said tone-color filters; means responsive to actuation of selected ones of said solo keys for connecting corresponding ones of said tone signal sources to said solo tone-color filters; means responsive to actuation of selected ones of said accompaniment keys for connecting corresponding ones of said tone signal sources to said accompaniment tone-color filter; and gate means responsive to actuation of any one or more of said solo keys for connecting tone signal sources called for only by the actuated accompaniment keys to said solo tone-color filter.
Claim 10
Dependent Claim
32 words
The combination according to claim 6, wherein said gate means is arranged and adapted to be operative while said any of said solo keys are actuated for the duration of the actuation.
Claim 11
Dependent Claim
42 words
The combination according to claim 6, wherein said gate means is arranged and adapted to be only transiently operative in response only to initial actuation of any said solo keys regardless of the then actuated condition of other of said solo keys.
Claim 12
Dependent Claim
174 words
In an electronic organ: a series of tone signal sources; a array of solo keys; an array of accompaniment keys; a solo tone-color filter; an accompaniment tone-color filter; a loudspeaker system conNected in cascade with said tone-color filters; means responsive to actuation of selected ones of said solo keys for connecting corresponding ones of said tone signal sources to said solo tone-color filter; means responsive to actuation of selected ones of said accompaniment keys for connecting corresponding ones of said tone signal sources to said accompaniment tone-color filters; means responsive to actuation of any one or more of said solo keys for connecting tone signal sources corresponding only with the actuated accompaniment keys to said solo tone-color filter, wherein is provided a selective two-condition switch; and means comprising a pulse shaping circuit responsive according to the condition of said selective two-condition switch for connecting tone signal corresponding with accompaniment keys to said solo tone-color filter transiently on actuation of any of said solo keys or for the duration of actuation of said solo keys.
Claim 13
Dependent Claim
174 words
In an electronic organ: a series of tone signal sources; a array of solo keys; an array of accompaniment keys; a solo tone-color filter; an accompaniment tone-color filter; a loudspeaker system conNected in cascade with said tone-color filters; means responsive to actuation of selected ones of said solo keys for connecting corresponding ones of said tone signal sources to said solo tone-color filter; means responsive to actuation of selected ones of said accompaniment keys for connecting corresponding ones of said tone signal sources to said accompaniment tone-color filters; means responsive to actuation of any one or more of said solo keys for connecting tone signal sources corresponding only with the actuated accompaniment keys to said solo tone-color filter, wherein is provided a selective two-condition switch; and means comprising a pulse shaping circuit responsive according to the condition of said selective two-condition switch for connecting tone signal corresponding with accompaniment keys to said solo tone-color filter transiently on actuation of any of said solo keys or for the duration of actuation of said solo keys.
Claim 14
Dependent Claim
103 words
The combination according to claim 9, wherein said last means includes a normally nonconductive transistor and a normally conductive transistor connected in cascade: means responsive to rendering said normally nonconductive transistor conductive to render said normally conductive transistor nonconductive; a gate connected between said tone sources and said solo tone-color filter; means uninhibiting said gate in response to the conductive condition of said normally conductive transistor and inhibiting said gate in response to the nonconductive condition of said normally conductive transistor; and means applying to said pulse to render conductive said normally nonconductive transistor selectively on a transient and a steady state basis.
Claim 15
Dependent Claim
166 words
In an electronic organ: a source of negative voltage; a resistance connected in series with said source of voltage; a plurality of load circuits selectively connected in cascade with said resistance; a plurality of key switches; means responsive to closure of any one or more of said key switches for completing a circuit from said source of voltage through said resistance to one or more of said load circuits to develop a control pulse; a first transistor having a base, an emitter and a collector; means connected said base to the load side of said resistance and said emitter directly to said source of voltage; an emitter resistance connected between said emitter and a reference point; a collector resistance connected between said collector and said reference point; a gate inhibited by negative voltage applied to a gating electrode; and means controlling said gate at said gating electrode selectively directly from said emitter or in response to voltage developed across at least part of said collector resistance.
Claim 16
Dependent Claim
166 words
In an electronic organ: a source of negative voltage; a resistance connected in series with said source of voltage; a plurality of load circuits selectively connected in cascade with said resistance; a plurality of key switches; means responsive to closure of any one or more of said key switches for completing a circuit from said source of voltage through said resistance to one or more of said load circuits to develop a control pulse; a first transistor having a base, an emitter and a collector; means connected said base to the load side of said resistance and said emitter directly to said source of voltage; an emitter resistance connected between said emitter and a reference point; a collector resistance connected between said collector and said reference point; a gate inhibited by negative voltage applied to a gating electrode; and means controlling said gate at said gating electrode selectively directly from said emitter or in response to voltage developed across at least part of said collector resistance.
Claim 17
Dependent Claim
62 words
The combination according to claim 11, wherein said gate includes: a capacitor connected between said gating electrode and a reference point; a terminal; means for at will selectively connecting said capacitor to said emitter and to said terminal; and means for discharging said capacitor in response to said control pulse developed across said resistance when said capacitor is connected to said terminal.
Claim 18
Dependent Claim
149 words
A gating circuit comprising: a NPN transistor having a base, an emitter and a collector; a source of negative voltage connected to said emitter; a load resistance connected between said collector and ground; a load capacitor having a first electrode connected to ground and having a second electrode; a timing resistance connected in series between said second electrode and said collector; a diode connected across said timing resistance poled in discharge relation to said capacitor through said transistor; means connected to said base for maintaining said transistor normally conductive; mean means for randomly rendering said transistor nonconductive; a gate having a control terminal, a signal input terminal and a signaL output terminal; means connecting said control terminal to said second electrode; a source of tone signal connected to said input terminal; and a load connected to an output circuit, said gate being of the type inhibited by negative voltage.
Claim 19
Dependent Claim
149 words
A gating circuit comprising: a NPN transistor having a base, an emitter and a collector; a source of negative voltage connected to said emitter; a load resistance connected between said collector and ground; a load capacitor having a first electrode connected to ground and having a second electrode; a timing resistance connected in series between said second electrode and said collector; a diode connected across said timing resistance poled in discharge relation to said capacitor through said transistor; means connected to said base for maintaining said transistor normally conductive; mean means for randomly rendering said transistor nonconductive; a gate having a control terminal, a signal input terminal and a signaL output terminal; means connecting said control terminal to said second electrode; a source of tone signal connected to said input terminal; and a load connected to an output circuit, said gate being of the type inhibited by negative voltage.
Claim 20
Dependent Claim
85 words
In an electronic organ: a tone generator including a gamut of tone signal sources; a first tone-color filter; a second tone-color filter; a loudspeaker system connected to said tone-color filters; a first array of keys for calling forth tones in response to said tone signal sources via said first tone-color filters; and means responsive to actuation of any of a said first array of keys for calling forth tones from said tone signal sources at pitches selected by keys of said second array of keys.
Claim 21
Dependent Claim
85 words
In an electronic organ: a tone generator including a gamut of tone signal sources; a first tone-color filter; a second tone-color filter; a loudspeaker system connected to said tone-color filters; a first array of keys for calling forth tones in response to said tone signal sources via said first tone-color filters; and means responsive to actuation of any of a said first array of keys for calling forth tones from said tone signal sources at pitches selected by keys of said second array of keys.
Claim 22
Dependent Claim
72 words
The combination according to claim 14, wherein said last means includes; means for generating a control pulse in response to each actuation of any one or more of said first array of keys; a collector for all tone signals called for by actuation of said second array of keys; a normally inhibited gate connecting said collector with said first tone-color filter; and means responsive to said control pulse for uninhibiting said gate.
Claim 23
Dependent Claim
20 words
The combination according to claim 15, wherein said means for uninhibiting includes means for periodically uninhibiting at a reiteration rate.
Claim 24
Dependent Claim
95 words
In an electronic organ; a source of an array of tone signals arranged according to the equally tempered scale; a tone-color filter; a first normally inhibited gate; a second normally inhibited gate; means connecting said gates in cascade with each other between said source of tone signal source and said tone-color filter; a source of reiteration voltage; means rendering one of said gates reiteratively uninhibited in response to said reiteration voltage; a source of key controlled randomly occurring control pulses; and means for uninhibiting the other of said gates in response to said control pulses.
Claim 25
Dependent Claim
95 words
In an electronic organ; a source of an array of tone signals arranged according to the equally tempered scale; a tone-color filter; a first normally inhibited gate; a second normally inhibited gate; means connecting said gates in cascade with each other between said source of tone signal source and said tone-color filter; a source of reiteration voltage; means rendering one of said gates reiteratively uninhibited in response to said reiteration voltage; a source of key controlled randomly occurring control pulses; and means for uninhibiting the other of said gates in response to said control pulses.
Claim 26
Dependent Claim
62 words
The combination according to claim 17, wherein is included: an array of solo keys; an array of accompaniment keys; means responsive to actuation of said accompaniment keys for connecting said tone signal sources in cascade with said gate according to the keys actuated; and means responsive to actuation of any one or more of said solo keys for generating said control pulses.
Claim 27
Dependent Claim
77 words
In a music system: a keyboard instrument having arrays of keys calling forth notes of the musical scale, when said keys are actuated; means responsive to actuation of certain of said keys for providing control voltage during actuation thereof; means for calling forth electrical tone signal from said instrument in response to actuation only of others of said keys; and means for converting said electrical tone signals to acoustic signals only in response to said control voltage.
Claim 28
Dependent Claim
77 words
In a music system: a keyboard instrument having arrays of keys calling forth notes of the musical scale, when said keys are actuated; means responsive to actuation of certain of said keys for providing control voltage during actuation thereof; means for calling forth electrical tone signal from said instrument in response to actuation only of others of said keys; and means for converting said electrical tone signals to acoustic signals only in response to said control voltage.
Claim 29
Dependent Claim
16 words
The combination according to claim 19, wherein is further provided means for reiterating said acoustic signals.
Claim 30
Dependent Claim
87 words
An electronic musical instrument having a gamut of solo keys and a gamut of accompaniment keys: means responsive to actuation of selected ones of said accompaniment keys for sounding corresponding accompaniment tones; and means responsive to continuous and uninterrupted actuation of selected ones of said accompaniment keys only with concurrent actuation of selected ones of said solo keys for sounding said accompaniment tones in response to each actuation of any one of said solo tones during said uninterrupted actuation of said selected ones of said accompaniment keys.
Claim 31
Dependent Claim
87 words
An electronic musical instrument having a gamut of solo keys and a gamut of accompaniment keys: means responsive to actuation of selected ones of said accompaniment keys for sounding corresponding accompaniment tones; and means responsive to continuous and uninterrupted actuation of selected ones of said accompaniment keys only with concurrent actuation of selected ones of said solo keys for sounding said accompaniment tones in response to each actuation of any one of said solo tones during said uninterrupted actuation of said selected ones of said accompaniment keys.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |