US5179710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interface for amplifying logic signal from a signal line having a predetermined logic state to supply power to peripheral device
Assignee: Laboratoire Europeen de Recherches Electroniques Avancees SNC
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Filing: 1992-03-13
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Granted: 1993-01-12
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Expires: 2012-03-13
Abstract
Abstract The disclosure pertains chiefly to an interface including an electrical supply. The disclosure concerns an interface capable of providing an external supply from the amplification of one of the signals. For example, the amplified DTR is used to give a supply voltage to a MIDI interface from an RS 232 serial interface using a nine-pin SUB D9M connector. The disclosure can be applied to the making of interfaces capable of giving an electrical supply to an external device as well as to computers including such interfaces. The disclosure can be applied chiefly to the making of computers capable of working under the MS-DOS operating system and capable of providing a supply voltage to the MIDI interface by means of an RS 232 serial interface and a SUB D9M connector.
Inventors
- 👤 Jean-Claude Coschieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26; G06F1/266
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
A computer interface, comprising: means for generating a signal having a first power level in a predetermined logic state during a period of time which a peripheral device connected to said interface requires power to be supplied thereto; means for amplifying said signal having said first power level to a second power level greater than said first power level, including a transistor, to produce an amplified signal to be used as a power source to said peripheral device; and means for supplying said amplified signal to power said peripheral device.
Claim 2
Dependent Claim
90 words
A computer interface, comprising: means for generating a signal having a first power level in a predetermined logic state during a period of time which a peripheral device connected to said interface requires power to be supplied thereto; means for amplifying said signal having said first power level to a second power level greater than said first power level, including a transistor, to produce an amplified signal to be used as a power source to said peripheral device; and means for supplying said amplified signal to power said peripheral device.
Claim 3
Dependent Claim
13 words
An interface according to claim 1, wherein the transistor comprises a NPN transistor.
Claim 4
Dependent Claim
18 words
An interface according to claim 2, comprising a resistor mounted between the base and emitter of the transistor.
Claim 5
Dependent Claim
16 words
An interface according to claim 1, wherein said interface comprises an RS 232 type serial interface.
Claim 6
Dependent Claim
24 words
An interface according to claim 4, wherein the DTR (Data Terminal Ready) signal of the RS 232 serial interface is used as said signal.
Claim 7
Dependent Claim
22 words
An interface according to claim 1, wherein said supplying means comprises a connector with nine connection pins, of the SUB D9M type.
Claim 8
Dependent Claim
9 words
A computer including an interface according to claim 1.
Claim 9
Dependent Claim
14 words
A computer according to claim 7, capable of working under the MS-DOS operating system.
Claim 10
Dependent Claim
27 words
A device including a MIDI interface and a computer wherein the MIDI interface is connected to the computer by means of the interface according to claim 1.
Claim 11
Dependent Claim
14 words
An interface according to claim 1, wherein: said peripheral device comprises a MIDI interface.
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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) | 1996-01-12 | 1996-07-13 | 1997-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-12 | 2000-07-13 | 2001-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-12 | 2004-07-13 | 2005-01-12 | $7700.00 | Window Closed / Lapsed |