Patent US6205502B1 successfully refreshed from Google Patents.
US6205502B1
Expired / Lapsed
US
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Universal serial bus compatible peripheral device and universal serial bus controller which automatically switches between connection and disconnection of computer
Assignee: Alps Alpine Co Ltd
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Filing: 1998-12-18
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Granted: 2001-03-20
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Expires: 2018-12-18
Abstract
Abstract A USB controller is provided between a personal computer main unit and various devices. By providing the USB controller with a switch part for temporarily cutting a current flowing between the USB controller and the personal computer main unit, the circuit is connected or interrupted. With the configuration, when a new device is connected, by sequentially turning on and off a switch in the switch part, an operation similar to pull-out and insertion of a connector or resetting of a system can be executed, so that the newly connected device can be made usable immediately.
Inventors
- 👤 Yoshihisa Endo
- 👤 Shinichi Higuchi
- 👤 Kazuhito Ooshita
- 👤 Yuko Sonoda
- 👤 Kouichi Ogino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:51
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/4068
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
140 words
A universal serial bus (USB) controller connected to a port according to a USB standard provided for a main unit of a computer, transmits and receives data wirelessly to/from a plurality of various devices, controls data from each of said devices and transmits the data to said computer main unit, said USB controller comprising: a receiving unit to receive signals from said devices; a transmitting unit to transmit a confirmation signal; a control unit to control said receiving unit and said transmitting unit; and a switch disposed between the computer main unit and the transmitting unit, devices being recognized after switching of said switch, said switch switched on the basis of said confirmation signal and controlling a connection between the computer main unit and the control unit in accordance with a change in a number of the plurality of devices.
Claim 2
Dependent Claim
140 words
A universal serial bus (USB) controller connected to a port according to a USB standard provided for a main unit of a computer, transmits and receives data wirelessly to/from a plurality of various devices, controls data from each of said devices and transmits the data to said computer main unit, said USB controller comprising: a receiving unit to receive signals from said devices; a transmitting unit to transmit a confirmation signal; a control unit to control said receiving unit and said transmitting unit; and a switch disposed between the computer main unit and the transmitting unit, devices being recognized after switching of said switch, said switch switched on the basis of said confirmation signal and controlling a connection between the computer main unit and the control unit in accordance with a change in a number of the plurality of devices.
Claim 3
Dependent Claim
55 words
The USB controller according to claim 1 , wherein said control unit determines identification data of a new device added to the plurality of devices and transmits the identification data to said computer main unit, and the computer main unit selects one device of the plurality of devices on the basis of the identification data.
Claim 4
Dependent Claim
19 words
The USB controller according to claim 1 , the switch disposed between the computer main unit and the controller.
Claim 5
Dependent Claim
55 words
The USB controller according to claim 3 , wherein said control unit determines identification data of a new device added to the plurality of devices and transmits the identification data to said computer main unit, and the computer main unit selects one device of the plurality of devices on the basis of the identification data.
Claim 6
Dependent Claim
135 words
A universal serial bus (USB) controller connected to a port according to a USB standard provided for a main unit of a computer, transmits and receives data wirelessly to/from a plurality of various devices, controls data from each of said devices and transmits the data to said computer main unit, said USB controller comprising: a receiving unit to receive signals from said devices; a transmitting unit to transmit a confirmation signal; a control unit to control said receiving unit and said transmitting unit; and a switch connecting ground and a data line between the computer main unit and the controller, devices being recognized after switching of said switch, said switch switched on the basis of said confirmation signal and controlling the connection in accordance with a change in a number of the plurality of devices.
Claim 7
Dependent Claim
135 words
A universal serial bus (USB) controller connected to a port according to a USB standard provided for a main unit of a computer, transmits and receives data wirelessly to/from a plurality of various devices, controls data from each of said devices and transmits the data to said computer main unit, said USB controller comprising: a receiving unit to receive signals from said devices; a transmitting unit to transmit a confirmation signal; a control unit to control said receiving unit and said transmitting unit; and a switch connecting ground and a data line between the computer main unit and the controller, devices being recognized after switching of said switch, said switch switched on the basis of said confirmation signal and controlling the connection in accordance with a change in a number of the plurality of devices.
Claim 8
Dependent Claim
55 words
The USB controller according to claim 5 , wherein said control unit determines identification data of a new device added to the plurality of devices and transmits the identification data to said computer main unit, and the computer main unit selects one device of the plurality of devices on the basis of the identification data.
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) | 2004-03-19 | 2004-09-18 | 2005-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-19 | 2008-09-18 | 2009-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-19 | 2012-09-18 | 2013-03-20 | $7700.00 | Window Closed / Lapsed |