Clock signal generator circuit for serial bus communication

Details Clock signal generator circuit for serial bus communication Clock signal generator circuit for serial bus communication

2005-03-28

2009-02-17

Du, Thuan N (Department: 2116)

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

Correction for skew, phase, or rate

C713S501000, C327S156000

Reexamination Certificate

active

07493510

ABSTRACT:
Provided is a smart card for communicating with a host computer through a universal serial bus (USB). The smart card includes an internal clock signal generator to generate an internal clock signal, a period detector to detect a period of the internal clock signal and to generate a control code according to the detected period, and a transmission clock generator to generate a transmission clock signal which varies from the internal clock signal according to the control code. The smart card transfers data in sync with the transmission clock signal.

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