Patent ID: 6058441
Filing Date: 2000-05-02
Classification: G06F

Abstract:
A USB multi-function connecting device, comprising:at least one pair of data upstream port and data downstream port, the data upstream port being connected to a USB circuit of a computer or the data upstream port of a previous level of USB multi-function connecting device in order to receive control command and information from the computer;a control circuit, comprising a USB controller, a microprocessor, a memory module, an interrupt controller, a timer and an asynchronous receiver/transmitter, wherein the USB controller is connected to the data upstream port and the data downstream port for receiving data from the data upstream port and outputs data at the data downstream port, the microprocessor having a data port connected to the USB controller for receiving input data therefrom or supplying output data to the USB controller, the memory module connected to an I/O port of the microprocessor for providing instruction execution, data storage, buffering function of the microprocessor and storage of function and control information of peripheral devices so as to allow the microprocessor to re-define and store the function and control information of the peripheral devices back thereto in response to a peripheral device control command and data transmission from the computer, the interrupt controller providing interrupt control command and interrupt control vector to the microprocessor and the asynchronous receiver/transmitter respectively, the asynchronous receiver/transmitter being connected to an end of the I/O port of the microprocessor to receive a final peripheral device control command and instruction from the microprocessor and output a corresponding peripheral device control command; anda peripheral device connector adapted to connect to a variety of peripheral devices for receiving the peripheral device control command from the asynchronous receiver/transmitter of the control circuit in order to control the peripheral device connected thereto.