US4090355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic metronome
Assignee: Seiko Instruments Inc
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Filing: 1976-09-17
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Granted: 1978-05-23
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Expires: 1996-09-17
Abstract
Abstract An electronic metronome has a visual indicator consisting of a package in which a plurality of different light color LED chips are mounted close to each other. Down-beat and up-beat are indicated as different color emissions from a single spot.
Inventors
- 👤 Fumio Morohoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/02; G04F5/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
An electronic metronome comprising a tempo signal generating means having an output, a down-beat signal generating means connected with said output of said tempo signal generating means, said down-beat signal generating means receiving a tempo signal from said tempo signal generating means and generating a down-beat signal therefrom, an indicator driving circuit connected to said tempo signal generating means and to said down-beat signal generating means and receiving signals therefrom, said indicator driving circuit having first and second outputs, a first LED and a second LED connected respectively to said first and second outputs of said indicator driving circuit, said indicator driving circuit energizing said first LED to make it conduct when said indicator driving circuit receives only said tempo signal and energizing said second LED to make it conduct when said indicator driving circuit receives both said tempo signal and said down-beat signal, said first LED being different from said second LED in colour and being packaged close to said second LED.
Claim 2
Dependent Claim
163 words
An electronic metronome comprising a tempo signal generating means having an output, a down-beat signal generating means connected with said output of said tempo signal generating means, said down-beat signal generating means receiving a tempo signal from said tempo signal generating means and generating a down-beat signal therefrom, an indicator driving circuit connected to said tempo signal generating means and to said down-beat signal generating means and receiving signals therefrom, said indicator driving circuit having first and second outputs, a first LED and a second LED connected respectively to said first and second outputs of said indicator driving circuit, said indicator driving circuit energizing said first LED to make it conduct when said indicator driving circuit receives only said tempo signal and energizing said second LED to make it conduct when said indicator driving circuit receives both said tempo signal and said down-beat signal, said first LED being different from said second LED in colour and being packaged close to said second LED.
Claim 3
Dependent Claim
22 words
An electronic metronome according to claim 1, in which said first LED and second LED are packaged together in a single envelope.
Claim 4
Dependent Claim
35 words
An electronic metronome according to claim 1, in which said down-beat signal generating means comprises counting means for producing a signal every n tempo signals and selecting switch means for selecting the value of n.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |