Electrical computers and digital data processing systems: input/ – Intrasystem connection
Reexamination Certificate
2005-02-25
2011-11-29
Myers, Paul R (Department: 2111)
Electrical computers and digital data processing systems: input/
Intrasystem connection
C710S305000, C710S314000, C370S257000
Reexamination Certificate
active
08069287
ABSTRACT:
An SE0timer detects that an SE0state of a universal serial bus continues for 3 ms or more, and asserts an SE03ms detected signal to a suspending/reset discriminating circuit. The suspending/reset discriminating circuit connects a pull-up resistor to a D+ data line, detects that the universal serial bus is in the SE0state, and asserts a reset detected signal to a reset control circuit. The reset control circuit asserts a threshold level changing signal to a receiver for a high-speed mode. The receiver changes the threshold into 250 mV. When the reset control circuit detects a K state of the universal serial bus after chirp driving K is executed and ended, the reset control circuit negates the threshold level changing signal to the receiver. The receiver changes the threshold back to 125 mV.
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Daley Christopher A
Fujitsu Semiconductor Limited
Myers Paul R
Staas & Halsey , LLP
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