US6763408B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interface switching device and terminal using the same
Assignee: Alps Alpine Co Ltd
•
Filing: 2000-08-16
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Granted: 2004-07-13
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Expires: 2020-08-16
Abstract
Abstract An interface switching device is connected to a keyboard unit and a computer. Two data lines, a power-supply line, and a ground line, which are provided at the interface switching device, are respectively connected to a data line, a clock line, a power-supply line, and a ground line, which are provided at the keyboard unit. An unused line is connected to an identification line. At the computer, the unused line, and the power-supply line or the ground line, are short-circuited. When the interface switching device is connected, a keyboard is notified of a voltage as identification information which is fixed at a power-supply voltage or zero volts.
Inventors
- 👤 Yuko Sonoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F2203/00; G06F2203/038; G06F2203/0382
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
An interface switching device, comprising: an output unit adapted for a first interface having multiple lines, the output unit provided on a side of a terminal; an input unit adapted for a second interface having multiple lines, the input unit provided on the side of a host; and an adapter for connecting the output unit on the terminal side and the input unit on the host side; wherein, when the output unit on the terminal side is connected to said adapter, said adapter supplies identification information to the output unit on the terminal side, and the output unit on the terminal side is switched to a signal adapted for the second interface, and wherein said identification information is supplied to the output unit on the terminal side by at least one of the lines of the first interface that is not used by the second interface.
Claim 2
Dependent Claim
146 words
An interface switching device, comprising: an output unit adapted for a first interface having multiple lines, the output unit provided on a side of a terminal; an input unit adapted for a second interface having multiple lines, the input unit provided on the side of a host; and an adapter for connecting the output unit on the terminal side and the input unit on the host side; wherein, when the output unit on the terminal side is connected to said adapter, said adapter supplies identification information to the output unit on the terminal side, and the output unit on the terminal side is switched to a signal adapted for the second interface, and wherein said identification information is supplied to the output unit on the terminal side by at least one of the lines of the first interface that is not used by the second interface.
Claim 3
Dependent Claim
23 words
An interface switching device according to claim 1 , wherein the unused line is connected to a power-supply line or a ground line.
Claim 4
Dependent Claim
17 words
An interface switching device according to claim 1 , wherein said first interface is a PS/2 interface.
Claim 5
Dependent Claim
17 words
An interface switching device according to claim 1 , wherein said second interface is a USB interface.
Claim 6
Dependent Claim
16 words
An interface switching device as in claim 1 , wherein said terminal has a switching unit.
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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) | 2007-07-13 | 2008-01-12 | 2008-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-07-13 | 2012-01-12 | 2012-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-07-13 | 2016-01-12 | 2016-07-13 | $7700.00 | Window Closed / Lapsed |