Electrical computers and digital data processing systems: input/ – Input/output data processing – Peripheral configuration
Reexamination Certificate
2005-11-04
2008-08-19
Knoll, Clifford H (Department: 2111)
Electrical computers and digital data processing systems: input/
Input/output data processing
Peripheral configuration
C709S237000
Reexamination Certificate
active
07415546
ABSTRACT:
The invention relates to an apparatus for interfacing a peripheral device corresponding to the detection of interface, which comprises: a regulator, for regulating the working voltage of the circuit of the apparatus; an USB physical layer with switch controller, for detecting and determining whether the interface to which the peripheral device is connected is an USB interface and thus being capable of enabling an USB mode of the apparatus; at least four pull-high switch resistors; and an analog switch, capable issuing an analog signal while the apparatus is in the USB mode; wherein the PS2 mode of the apparatus is enabled while the USB physical layer with switch controller detects no USB interface being connected to the peripheral device, and the mode of the apparatus is controlled by the interaction of the on/off statuses of the four pull-high switch resistors.
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Liu Hsiang Sheng
Ma Pak Man
Holtek Semiconductor
Knoll Clifford H
Troxell Law Office PLLC
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