US3782237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Group training systems utilizing electronic musical instruments
Assignee: Nippon Gakki Co Ltd
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Filing: 1972-12-05
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Granted: 1974-01-01
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Expires: 1992-12-05
Abstract
Abstract The group training system comprises a plurality of student stations and a teacher station. Each student station comprises an electronic musical instrument, a headphone connected to the electronic musical instrument through a gate circuit, and a microphone. The teacher station comprises an electronic musical instrument, a headphone connected to this electronic musical instrument, a switch for supplying disenabling signal to the gate circuits of all student stations, a microphone, and other switches for selectively supplying the outputs from the microphone and musical instrument of the teacher station to respective headphones of the student stations and the outputs from respective electronic musical instruments and microphones of the student stations to the headphone of the teacher station, whereby one to one training as well as simultaneous training of a group of students can be attained by interrupting the conduction between the musical instruments of the student stations and the headphones thereof through the operation of the disenabling switch.
Inventors
- 👤 E Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/0008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
A group training system utilizing electronic musical instruments comprising: a plurality of student stations, each including a first electronic musical instrument, a first electro-acoustic transducer connected to receive the output from said first electronic musical instrument, a gate circuit connected between the output from said first electronic musical instrument and said first electro-acoustic transducer, and a first acousticelectrotransducer; and a teacher station including a second electronic musical instrument, a second electro-acoustic transducer connected to receive the output from said second electronic musical instrument, a second acoustic-electrotransducer, means for supplying a disenabling signal to respective gate circuits of said plurality of student stations, a first group of switches for selectively supplying the output from said second acousticelectrotransducer to respective first electro-acoustic transducers of said plurality of student stations, a second group of switches for selectively supplying the outputs from respective first electronic musical instruments of said student stations to said second electro-acoustic transducer, and a third group of switches for selectively supplying the outputs of respective first acoustic-electrotransducers to said second electro-acoustic transducer.
Claim 2
Dependent Claim
172 words
A group training system utilizing electronic musical instruments comprising: a plurality of student stations, each including a first electronic musical instrument, a first electro-acoustic transducer connected to receive the output from said first electronic musical instrument, a gate circuit connected between the output from said first electronic musical instrument and said first electro-acoustic transducer, and a first acousticelectrotransducer; and a teacher station including a second electronic musical instrument, a second electro-acoustic transducer connected to receive the output from said second electronic musical instrument, a second acoustic-electrotransducer, means for supplying a disenabling signal to respective gate circuits of said plurality of student stations, a first group of switches for selectively supplying the output from said second acousticelectrotransducer to respective first electro-acoustic transducers of said plurality of student stations, a second group of switches for selectively supplying the outputs from respective first electronic musical instruments of said student stations to said second electro-acoustic transducer, and a third group of switches for selectively supplying the outputs of respective first acoustic-electrotransducers to said second electro-acoustic transducer.
Claim 3
Dependent Claim
43 words
The group training system according to claim 1 wherein each of said first, second and third groups of switches includes the same number of switches as the number of said student stations, and the switches associated with a given student station are interlockEd.
Claim 4
Dependent Claim
50 words
The group training system according to claim 1 wherein said means for supplying said disenabling signal comprises a plurality of switches of the same number as that of said student stations, said switches operating to selectively supply said disenabling signal to the gate circuits of said plurality of student stations.
Claim 5
Dependent Claim
31 words
The group training system according to claim 3 wherein said means further comprises a switch for simultaneously supplying said disenabling signal to the gate circuits of said plurality of student stations.
Claim 6
Dependent Claim
110 words
The group training system according to claim 1 wherein said means for supplying said disenabling signal comprises a plurality of series circuits of the same number as that of said student station, each series circuit including a first manually operable switch, a first diode and a relay coil which are connected in series, a source of supply, said series circuits being connected across said source of supply with a polarity for forwardly biasing said first diodes, a source of said disenabling signal, and a plurality of switches respectively operated by said relay coils for connecting said source of disenabling signal to respective gate circuits of said plurality of student stations.
Claim 7
Dependent Claim
61 words
The group training system according to claim 5 wherein said means for supplying said disenabling signal further comprises a second manually operable switch, and a plurality of second diodes of the same number as said first diodes, said second switch being connected in parallel with the respective series circuit of said manually operable switches and first diodes through respective second diodes.
Claim 8
Dependent Claim
25 words
The group training system according to claim 1 wherein each of said electro-acoustic transducers comprises a microphone and each of said acoustic-electrotransducers comprises a headphone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |