Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Reexamination Certificate
2000-02-28
2003-05-13
Gaffin, Jeffrey (Department: 2182)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
C710S005000, C710S008000, C710S020000, C710S033000, C710S036000, C710S051000, C710S062000, C710S063000, C710S107000, C710S305000, C710S313000
Reexamination Certificate
active
06564275
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a switching device for a universal serial bus interface, and more particularly to an electronic switching device that can connect a plurality of device each having a universal serial bus interface, so as to share related resources.
BACKGROUND OF THE INVENTION
All of the conventional switching devices for a universal serial bus (USB) interface are mechanical switching devices. The switching action of the mechanical switching device is a kind of sequential switching, therefore, when the switch passes the intermediate unrelated connection points, the related electronic signal will cause unrelated devices to operate, even though the connection time is very short. When the switching between related devices is very fast, the related devices may not operate accurately.
Furthermore, a mechanical switching device is apt to form the disconnection problem, and sometimes is not very easy to twist/turn.
OBJECTS OF THE INVENTION
It is therefore an object of the present invention to provide an electronic switching device for a universal serial bus interface, such that when enabling the switch sequentially to select a related device, due to a delay signal generator design the intermediate devices will not operate.
It is another object of the present invention to provide an electronic switching device for a universal serial bus interface, so as to replace the conventional mechanical switching device to avoid the disconnection problem, and the twist/turn problem.
REFERENCES:
patent: 6012103 (2000-01-01), Sartore et al.
patent: 6057674 (2000-05-01), Bangerter
patent: 6073188 (2000-06-01), Fleming
patent: 6118496 (2000-09-01), Ho
Aten International Co. Ltd.
Farooq Mohammad O.
Gaffin Jeffrey
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