Patent US3877337A successfully refreshed from Google Patents.
US3877337A
Expired / Lapsed
US
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Electronic musical instrument capable of transposition
Assignee: Kawai Musical Instruments Manufacturing Co Ltd
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Filing: 1973-04-19
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Granted: 1975-04-15
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Expires: 1993-04-19
Abstract
Abstract An electronic musical instrument capable of transposition has a high frequency oscillator provided on its output side with an octave frequency divider comprising 12 counter circuits to generate 12 tone signals based on a twelve tempered scale. These tone signals are respectively frequency-divided by respective pluralities of counter circuits to obtain a plurality of octave tone signals. An oscillator for transposition comprising a plurality of counter circuits is provided and the output terminals of these counter circuits are selectively connected to an input terminal of the octave frequency divider such that the oscillation frequency generated from the high frequency oscillator is added to the oscillation frequency generated from the transposition oscillation to produce an input frequency for the octave frequency divider.
Inventors
- 👤 Nobuharu Obayashi
- 👤 Tetsuzi Sakashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/18; G10H1/20; G10H5/00; G10H5/02; G10H5/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
An electronic musical instrument capable of transposition comprising a high frequency oscillator having an output side, an octave frequency divider including twelve counter circuits to generate twelve tone signals, a transposition oscillator including a plurality of counter circuits coupled between the output side of said oscillator and said divider, means to control the addition of the frequency of the output of said high frequency oscillator to the frequency of the output of the transposition oscillator to generate an input frequency for the octave frequency divider, said means including a NOT circuit coupled between said oscillators and an OR circuit coupled between said high frequency oscillator and divider, and a selector switch between the transposition oscillator and said OR circuit.
Claim 2
Dependent Claim
119 words
An electronic musical instrument capable of transposition comprising a high frequency oscillator having an output side, an octave frequency divider including twelve counter circuits to generate twelve tone signals, a transposition oscillator including a plurality of counter circuits coupled between the output side of said oscillator and said divider, means to control the addition of the frequency of the output of said high frequency oscillator to the frequency of the output of the transposition oscillator to generate an input frequency for the octave frequency divider, said means including a NOT circuit coupled between said oscillators and an OR circuit coupled between said high frequency oscillator and divider, and a selector switch between the transposition oscillator and said OR circuit.
Claim 3
Dependent Claim
22 words
An instrument as claimed in claim 1 comprising differentiation circuits coupled between said OR circuit and said high frequency oscillator and switch.
Claim 4
Dependent Claim
33 words
An instrument as claimed in claim 1 comprising frequency divider means coupled to said high frequency oscillator and a change-over switch coupling said frequency divider means to said NOT circuit and OR circuit.
Claim 5
Dependent Claim
118 words
An electronic musical instrument capable of transposition comprising a high frequency oscillator having an output side, an octave frequency divider including twelve counter circuits to generate twelve tone signals, a transposition oscillator includiing a plurality of counter circuits coupled between the output side of said oscillator and said divider, means to control the addition of the frequency of the output of said high frequency oscillator to the frequency of the output of the transposition oscillator to generate an input frequency for the octave frequency divider, said means including a binary circuit between the high frequency oscillator and the transposition oscillator and divider and an OR circuit coupling said high frequency oscillator and said transposition oscillator to said divider.
Claim 6
Dependent Claim
118 words
An electronic musical instrument capable of transposition comprising a high frequency oscillator having an output side, an octave frequency divider including twelve counter circuits to generate twelve tone signals, a transposition oscillator includiing a plurality of counter circuits coupled between the output side of said oscillator and said divider, means to control the addition of the frequency of the output of said high frequency oscillator to the frequency of the output of the transposition oscillator to generate an input frequency for the octave frequency divider, said means including a binary circuit between the high frequency oscillator and the transposition oscillator and divider and an OR circuit coupling said high frequency oscillator and said transposition oscillator to said divider.
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |