Control device for a USB interface and control method thereof

Details Control device for a USB interface and control method thereof Control device for a USB interface and control method thereof

2011-07-19

2011-07-19

Tsai, Henry W (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output process timing

C709S248000

Reexamination Certificate

active

07984213

ABSTRACT:
A control device for a USB interface including at least one first terminal for inputting the data to be transmitted and at least one second terminal for the transmission of the packet data on a bus; the packet data include one end-of-packet signal. The USB interface includes one circuit for the data transmission on said at least one second terminal; the USB interface is adapted to receive as an input a signal for the activation of the transmission circuit when data are received from the at least one first terminal and the transmission circuit includes a bias circuit. The control device includes a circuit for the detection of an end-of packet signal on said bus and a control circuit adapted to activate the bias circuit of the transmission circuit if said end-of-packet signal is detected by said detection circuit.

REFERENCES:
patent: 5808481 (1998-09-01), Thompson
patent: 6256682 (2001-07-01), Gudan et al.
patent: 2002/0010821 (2002-01-01), Yu et al.
patent: 2007/0106825 (2007-05-01), Duval et al.

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