# US 2019/0377608 A1 · Sharing expansion device, controlling method and computer using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0377608 A1 - Document ID: US20190377608A1 - Status: Published application - Kind: A1 - Application number: 16/192,154 - Filed: 2018-11-15 - Published: 2019-12-12 - Earliest claimed: 2018-06-08 - Assignees: Quanta Computer Inc. - Applicants: Quanta Computer Inc. - Inventors: Hsiang-Chih CHI - Web page: https://patentgrep.com/patent/US20190377608A1 ## CPC - G06F 9/5027: {the resource being a machine, e.g. CPUs, Servers, Terminals} - G06F 3/1431: {using a single graphics controller} - G06F 9/4843: {by program, e.g. task dispatcher, supervisor, operating system} - G06F 21/31: User authentication - G09G 5/006: {Details of the interface to the display terminal (specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04)} - G06F 2209/5016: Session - G09G 2370/042: for monitor identification - G09G 2370/047: using display data channel standard [DDC] communication - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A sharing expansion device, a controlling method and a computer using the same are provided. The computer has at least one first user account and a second user account. The first user account has been logged in the computer. The computer is connected to a first input device and a first monitor. The first input device provides at least one first command. The sharing expansion device includes at least two first ports, a second port, a hub unit and a graphic processor. The first ports connect the computer and a second input device. The second input device provides at least one second command. The computer executes the first command and the second command by way of time division multiplexing. The computer provides a first frame and a second frame to the first monitor and the second monitor according to the first user account and the second user account respectively. ## Claims ### Claim 1 A controlling method of a sharing expansion device, wherein a computer has at least one first user account and a second user account, the first user account has been logged in the computer, and the controlling method comprises: providing a shared login interface, through which the second user account logs in the computer, when the computer is connected to the sharing expansion device; receiving at least one first command from the first user account and receiving at least one second command from the second user account; and executing the first command and the second command by way of time division multiplexing. ### Claim 2 (depends on 1) The controlling method of the sharing expansion device according to claim 1, further comprising: verifying whether the sharing expansion device has an identification code; determining whether the computer has been installed with a driver if the sharing expansion device has the identification code; and installing the driver on the computer and driving the sharing expansion device if the computer has not been installed with the driver. ### Claim 3 (depends on 2) The controlling method of sharing expansion device according to claim 2, further comprising: determining whether the computer has been installed with a shared application; installing the shared application on the computer for activating the shared login interface if the computer has not been installed with the shared application. ### Claim 4 (depends on 1) The controlling method of sharing expansion device according to claim 1, wherein the computer is connected to a first monitor, the sharing expansion device is connected to a second monitor, and the computer provides a first frame to the first monitor according to the first user account and provides the second monitor to the second monitor according to the second user account. ### Claim 5 A sharing expansion device, wherein a computer has at least one first user account and a second user account, the first user account has been logged in the computer, the computer is connected to a first input device and a first monitor, the first input device is used for providing at least one first command, and the sharing expansion device comprises: at least two first ports used for connecting the computer and a second input device, wherein the second input device is used for providing at least one second command, and the computer executes the first command and the second command by way of time division multiplexing; a second port used for connecting to a second monitor, wherein the computer provides a first frame to the first monitor according to the first user account and provides a second frame to the second monitor according to the second user account; a hub unit used for connecting the first ports and the second port; and a graphic processor used for processing the second frame. ### Claim 6 (depends on 5) The sharing expansion device according to claim 5, further comprising: a memory used for storing an identification code and a driver, wherein if the computer verifies that the sharing expansion device has the identification code and the computer has not been installed with the driver, then the driver is provided to be installed on the computer and the sharing expansion device is driven by the driver. ### Claim 7 (depends on 6) The sharing expansion device according to claim 6, wherein the memory stores a shared application; if the computer has not been installed with the shared application, then the shared application is provided to be installed on the computer, and the shared login interface is activated. ### Claim 8 A computer having at least one first user account and a second user account, wherein the first user account has been logged in the computer, and the computer comprises: a port used for connecting to a sharing expansion device which provides a shared login interface through which the second user account logs in the computer; and a processor used for receiving at least one first command from the first user account, receiving at least one second command from the second user account and executing the first command and the second command by way of time division multiplexing. ### Claim 9 (depends on 8) The computer according to claim 8, wherein the processor is further used for verifying whether the sharing expansion device has an identification code; if the sharing expansion device has the identification code and the computer has not been installed with a driver, then the driver is installed on the computer and the sharing expansion device is driven by the driver. ### Claim 10 (depends on 8) The computer according to claim 8, wherein the computer is connected to a first monitor, the sharing expansion device is connected to a second monitor, and the computer provides a first frame to the first monitor according to the first user account and provides a second frame to the second monitor according to the second user account.