US5140890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guitar control system
Assignee: Bank of America NA
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Filing: 1990-01-19
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Granted: 1992-08-25
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Expires: 2010-01-19
Abstract
Abstract A guitar control system using multiple string processing channels for developing pitch and peak signals for a multiple of string vibrations. Pitch data is multiplexed into a microprocessor along with the peak data and the programmed microprocessor outputs processed sound information on an address/data buss. Midi input/output, analog input/output and counter circuitry are interactively connected with the data buss, and final audio processing is derived from the analog output.
Inventors
- 👤 Clifford S. Elion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:28
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/0033; G10H1/0041; G10H1/0058; G10H1/0066; G10H3/00; G10H3/12; G10H3/125; G10H3/14; G10H3/18; G10H3/186; G10H2210/00; G10H2210/031; G10H2210/066; G10H2250/00; G10H2250/541; G10H2250/545; Y; Y10; Y10S; Y10S84/00; Y10S84/09
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
A guitar control system comprising: a multi-phonic string vibration pickup providing respective string outputs; a plurality of string processing channels with harmonic rejection filter each receiving input of a respective string output and each generating a pitch output and a peak output; input multiplexing means receiving each of said pitch outputs and providing a multiplexed output; a programmed microprocessor receiving input of said multiplexed output and each of said peak outputs, and providing output of string related data on an address/data buss; a midi interface connected to said buss for converting string related data for synthesizer input; an analog input/output circuit connected to said buss; a counter circuit connected to said buss and generating a filter output for each string, with each filter output being conducted back to the respective string processing channel for input to the respective harmonic rejection filter; and audio processing circuitry receiving output from said analog input/output circuit and providing selected audio output.
Claim 2
Dependent Claim
157 words
A guitar control system comprising: a multi-phonic string vibration pickup providing respective string outputs; a plurality of string processing channels with harmonic rejection filter each receiving input of a respective string output and each generating a pitch output and a peak output; input multiplexing means receiving each of said pitch outputs and providing a multiplexed output; a programmed microprocessor receiving input of said multiplexed output and each of said peak outputs, and providing output of string related data on an address/data buss; a midi interface connected to said buss for converting string related data for synthesizer input; an analog input/output circuit connected to said buss; a counter circuit connected to said buss and generating a filter output for each string, with each filter output being conducted back to the respective string processing channel for input to the respective harmonic rejection filter; and audio processing circuitry receiving output from said analog input/output circuit and providing selected audio output.
Claim 3
Dependent Claim
59 words
A guitar control system as set forth in claim 1 wherein each of said string processing channels is further characterized to include: an input buffer and anti-aliasing filter receiving said input and generating a first filtered output for input to said harmonic rejection filter; and a reconstruction filter receiving input from said harmonic rejection filter and providing an output.
Claim 4
Dependent Claim
47 words
A guitar control system as set forth in claim 2 which is further characterized to include: a negative peak detector receiving said reconstruction filter output to provide a negative peak output; and a positive peak detector receiving said reconstruction filter output to provide a positive peak output.
Claim 5
Dependent Claim
36 words
A guitar control system as set forth in claim 2 which is further characterized to include: a positive peak track/hold circuit receiving said reconstruction filter output and generating a peak signal for input to said microprocessor.
Claim 6
Dependent Claim
61 words
A guitar control system as set forth in claim 3 which is further characterized to include: differentiating means receiving said negative peak output and generating a pitch plus signal; second differentiating means receiving said positive peak output and generating a pitch minus signal; and means for applying the pitch plus and pitch minus signals as inputs to said input multiplexing means.
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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |