Prolific Technology Inc.

Chun-Shiu Chen

Tien-Wei Yu

Cheng-Sheng Chan

Tien-wei Yu

A bridge device having data monitoring function is disclosed. The bridge device can be made to be an integrated circuit (IC) chip, so as to be disposed on a circuit board with a USB connector and a UART connector, thereby forming a USB to UART converter. When using the USB to UART converter, the USB connector is connected to a host computer, and the UART connector is connected to an electronic device. As such, the bridge device provides the host computer with at least three virtual COM ports, such that the host computer is able to conduct a data transmission with the electronic device through one virtual COM port. Moreover, during the data transmission, the host computer is also able to hear the transmitted data by way of diverting the transmitted data through the other two virtual COM ports.

Bridge device having data monitoring function and USB to UART converter having the same

A USB hub device having functionality of self firmware updating is disclosed. The USB hub device is integrated in a host electronic system, and comprises an upstream port, a plurality of downstream ports and a hub module comprising a plurality of second USB controller units. On the other hand, the host electronic system has a second USB controller unit. After one electronic device is coupled to one downstream port, the first USB controller unit sends a detection signal for verifying whether the electronic device includes at least one firmware update data or not. In case of the electronic device being verified to have the firmware update data, the hub module transmit the firmware update data from the electronic device to a memory unit thereof, thereby completing a firmware update of the USB hub device.

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Taipei, Taiwan

Chun-Shiu Chen