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公开(公告)号：US3465087A
公开(公告)日：1969-09-02
申请号：US3465087D
申请日：1965-04-28
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , PLUNKETT BRADLEY J
CPC classification number: G10H1/057
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2.发明授权Diode disconnect circuit, for electronic musical instruments, isolating variable load means from tone generator means 失效二极管断路电路，用于电子乐器，隔离可变负载装置与音源装置
公开(公告)号：US3263018A
公开(公告)日：1966-07-26
申请号：US28959463
申请日：1963-06-21
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R
IPC: G10H5/12
CPC classification number: G10H5/12
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3.发明授权Keyer circuit for an electronic musical instrument wherein a single switch may actuate a single note or a chord 失效用于单个开关的电子音乐仪器的KEYER电路可以执行单个注释或一个字
公开(公告)号：US3665088A
公开(公告)日：1972-05-23
申请号：US3665088D
申请日：1970-11-27
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , SMITH ERNEST A
Abstract: A chord circuit is provided in which, upon positioning of a tab switch, the actuation of a given key will cause the sounding of a predetermined chord. Such chord circuits may be provided for a number of different chords, so that depending upon the tab switch which is operated, the actuation of the C key, for example, may cause the sounding, selectively, of C major chord, C minor chord, C diminished chord, and so forth. In the present circuit this is done without requiring the ganging of switch poles, so that the same single-pole key switch which is conventionally used to sound a given tone, also sounds the various preselected chords.
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公开(公告)号：US3446904A
公开(公告)日：1969-05-27
申请号：US3446904D
申请日：1968-01-04
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , PLUNKETT BRADLEY J
CPC classification number: G10H1/22
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公开(公告)号：US3422454A
公开(公告)日：1969-01-14
申请号：US3422454D
申请日：1965-04-28
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , PLUNKETT BRADLEY J
CPC classification number: G10H1/057
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Patent Agency Ranking6.发明授权Chord organ switching circuit for selectively playing either chords or single notes by depressing one key 失效弦琴切换电路，用于通过按下一个键来选择性地演奏和弦或单音
公开(公告)号：US3359358A
公开(公告)日：1967-12-19
申请号：US28233263
申请日：1963-05-22
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , STANLEY CUTLER
IPC: G10H1/38
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公开(公告)号：US3560628A
公开(公告)日：1971-02-02
申请号：US3560628D
申请日：1967-06-30
Applicant: WARWICK ELECTRONICS INC
Inventor： PLUNKETT BRADLEY J , BRAND JOHN R
CPC classification number: G10H1/183
Abstract: A series of key switches are provided with individual tone sources. From one end of the series, output signal is applied to a first frequency divider circuit, thence to suitable formants and to the output of the musical instrument. From another point, or points, in the series of key switches, a second output is taken and applied through a second frequency divider circuit; thence to the formants and output circuits. If two key switches are closed at the same time, that switch closest to the series end feeding the first channel determines the tone which will pass through the first channel. Selective means are provided to cause the other tone to pass through the second channel. In this way two tones can be simultaneously applied to the output circuit, i.e., loudspeaker, where previously only a single tone could be sounded at any one time (monophonic tone sounding).
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公开(公告)号：US3286013A
公开(公告)日：1966-11-15
申请号：US28827063
申请日：1963-06-17
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , PLUNKETT BRADLEY J
IPC: G10H1/043
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公开(公告)号：US3543281A
公开(公告)日：1970-11-24
申请号：US3543281D
申请日：1968-06-21
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R , GALANTI FRANK
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公开(公告)号：US3415941A
公开(公告)日：1968-12-10
申请号：US45819865
申请日：1965-05-24
Applicant: WARWICK ELECTRONICS INC
Inventor： BRAND JOHN R
IPC: G10H1/057
CPC classification number: G10H1/057
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