# US 12,008,971 B2 · Display device and control method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,008,971 B2 - Document ID: US12008971B2 - Status: Granted - Kind: B2 - Application number: 18/116,551 - Filed: 2023-03-02 - Published: 2023-06-29 - Granted: 2024-06-11 - Earliest claimed: 2020-09-23 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Doyoung Kim; Gwanghyun Kim; Wonpil Kim; Heehyo Yang; Younggon Cho - Web page: https://patentgrep.com/patent/US12008971B2 ## CPC - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G09G 3/36: using liquid crystals - H04N 21/443: OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - G09G 2320/0626: for control of overall brightness - G09G 2320/0653: Controlling or limiting the speed of brightness adjustment of the illumination source - G09G 2330/00: Aspects of power supply; Aspects of display protection and defect management - G09G 2330/023: using energy recovery or conservation - G09G 2354/00: Aspects of interface with display user - G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data - H02J 7/70: characterised by the mechanical construction - H02J 7/933: {the cycle being controlled or terminated in response to electric parameters} - H02J 2207/30: Charge provided using DC bus or data bus of a computer - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A display device is disclosed. The display device may comprise: a power supply configured to generate power; an external input port, which can be connected to at least one external device; a display; and a processor configured to: acquire brightness information about the display, identify first power information required by the display based on the acquired brightness information, and adjust, based on the identified first power information and second power information provided from the power supply, power supplied to the external input port. ## Claims ### Claim 1 A display device comprising: a power supply configured to supply power; an external input port; a display; and at least one processor configured to: acquire brightness information of the display, identify first power information required from the display based on the acquired brightness information, receive third power information from an external device connected to the external input port, wherein the third power information includes information on voltage and current values required for charging the external device, and adjust power supplied to the external input port based on the first power information, second power information supplied from the power supply, and the third power information, wherein at least one processor is configured to: based on power required from the external device that is calculated based on the voltage and current values not exceeding power available, control supply of power to the external input port at the voltage and current values included in the third power information, and based on the power required from the external device exceeding the power available, control supply of power to the external input port at specified voltage and current values within a range of values that does not exceed the power available, and wherein at least one processor of the device is configured to: based on the display device being in a power saving mode, adjust the power supplied to the external input port based on default power information corresponding to the power saving mode of the display device and the second power information, adjust the power supplied to the external input port to a threshold power based on the display device switching from the power saving mode to a normal mode, and control the display to display an image corresponding to the normal mode. ### Claim 2 (depends on 1) The device of claim 1, wherein at least one processor is configured to: identify information on power available for the external input port based on the first power information and the second power information, and adjust the power supplied to the external input port based on the identified power information and the third power information. ### Claim 3 (depends on 1) The device of claim 1, wherein at least one processor is configured to receive the third power information using universal serial bus-power delivery (USB-PD) or power data objects (PDO). ### Claim 4 (depends on 1) The device of claim 1, wherein at least one processor is configured to: acquire the brightness information of the display, and re-identify the first power information required from the display based on the acquired brightness information. ### Claim 5 (depends on 1) The device of claim 1, further comprising an input unit comprising input circuitry, wherein at least one processor is configured to acquire the brightness information of the display based on a command for adjusting brightness of the display being input through the input unit. ### Claim 6 (depends on 1) The device of claim 1, wherein the external input port includes a USB type-C port. ### Claim 7 A method of controlling a display device, the method comprising: acquiring brightness information of a display of the display device; identifying first power information required from the display based on the acquired brightness information; receiving third power information from an external device connected to an external input port of the display device, wherein the third power information includes information on voltage and current values required for charging the external device, and adjusting power supplied to the external input port based on the first power information, second power information supplied from a power supply of the display device, and the third power information, wherein, in the adjusting of the power supplied to the external input port, power is supplied to the external input port at the voltage and current values included in the third power information based on power required from the external device that is calculated based on the voltage and current values not exceeding the power available, wherein, in the adjusting of the power supplied to the external input port, power is supplied to the external input port at specified voltage and current values within a range of values that do not exceed the power available based on the power required from the external device that is calculated based on the voltage and current values exceeding the power available, and wherein the method further comprises: based on the display device being in a power saving mode, adjusting power supplied to the external input port based on default power information corresponding to the power saving mode of the display device and the second power information, adjusting the power supplied to the external input port to a threshold power based on the display device switching from the power saving mode to a normal mode, and controlling the display to display an image corresponding to the normal mode. ### Claim 8 (depends on 7) The method of claim 7, wherein the adjusting of the power supplied to the external input port includes: identifying information on power available for the external input port based on the first power information and the second power information; and adjusting the power supplied to the external input port based on the identified power information and the received third power information. ### Claim 9 (depends on 7) The method of claim 7, wherein the third power information is received using universal serial bus-power delivery (USB-PD) or power data objects (PDO). ### Claim 10 (depends on 7) The method of claim 7, further comprising: acquiring the brightness information of the display, and re-identifying the first power information required from the display based on the acquired brightness information. ### Claim 11 (depends on 7) The method of claim 7, wherein the acquiring the brightness information of the display includes acquiring the brightness information of the display based on a user command for adjusting brightness of the display. ### Claim 12 (depends on 7) The method of claim 7, wherein the external input port includes a USB type-C port.