# US 11,439,340 B2 · Display devices and methods for controlling a display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,340 B2 - Document ID: US11439340B2 - Status: Granted - Kind: B2 - Application number: 16/308,809 - Filed: 2016-06-17 - Published: 2019-10-10 - Granted: 2022-09-13 - Earliest claimed: 2016-06-17 - Assignees: Razer (Asia-Pacific) Pte. Ltd. - Applicants: Razer (Asia-Pacific) Pte. Ltd. - Inventors: Min-Liang Tan; Kian Sin Yeo; Beng Leong Toh; Ji Fong Lim; Gui Mei Dai; Kah Yong Lee; Aninda Kanti Sen - Web page: https://patentgrep.com/patent/US11439340B2 ## CPC - A61B 5/375: using biofeedback - A61B 5/0006: {ECG or EEG signals} - A61B 5/1123: {Discriminating type of movement, e.g. walking or running (A61B5/1116, A61B5/112 take precedence)} - A61B 5/165: {Evaluating the state of mind, e.g. depression, anxiety} - A61B 5/372: Analysis of electroencephalograms - A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles} - A61B 5/7445: {Display arrangements, e.g. multiple display units} - A61M 21/00: Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis - A63F 13/212: using sensors worn by the player, e.g. for measuring heart beat or leg activity - A63F 13/42: by mapping the input signals into game commands, e.g. mapping the displacement of a stylus on a touch screen to the steering angle of a virtual vehicle - G02B 27/0093: {with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking} - G02B 27/0172: {characterised by optical features} - G06F 3/015: {Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection} - H05B 47/105: in response to determined parameters - A61B 2503/12: Healthy persons not otherwise provided for, e.g. subjects of a marketing survey - A61M 2021/0044: {by the sight sense} - A61M 2205/3553: remote, e.g. between patient's home and doctor's office - A61M 2205/3561: local, e.g. within room or hospital - A61M 2205/502: User interfaces, e.g. screens or keyboards - A61M 2205/584: having a color code - A61M 2205/587: Lighting arrangements - A61M 2230/10: Electroencephalographic signals - A63F 2300/1012: involving biosensors worn by the player, e.g. for measuring heart beat, limb activity - A63F 2300/6045: for mapping control signals received from the input arrangement into game commands - G02B 2027/014: {comprising information/image processing systems} - G06F 1/163: {Wearable computers, e.g. on a belt} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A63F: CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract According to various embodiments, a display device may be provided. The display device may include: a receiver configured to receive user data based on an electroencephalography measurement; at least one light source; and a controller configured to control the at least one light source based on the user data. ## Claims ### Claim 1 A keyboard comprising: a receiver, the receiver of the keyboard configured to receive an electroencephalography measurement data of a user playing a game; a backlight comprising at least one light source; and a controller configured to control the at least one light source of the backlight of the keyboard based on the electroencephalography measurement data of the user, as the user progresses through the game. ### Claim 2 (depends on 1) The keyboard of claim 1, further comprising: a mental state determination circuit configured to determine at least one of a mental state or a motor state based on the electroencephalography measurement data. ### Claim 3 (depends on 2) The keyboard of claim 2, further comprising: a control data determination circuit configured to determine control data for controlling the at least one light source based on the at least one of mental state or motor state. ### Claim 4 (depends on 1) The keyboard of claim 1, wherein the electroencephalography measurement data comprises data indicating at least one of a mental state or a motor state. ### Claim 5 (depends on 4) The keyboard of claim 4, further comprising: a control data determination circuit configured to determine control data for controlling the at least one light source based on the at least one of mental state or motor state. ### Claim 6 (depends on 1) The keyboard of claim 1, wherein the receiver comprises at least one of a wired interface, a wireless interface, a Bluetooth interface, a ZigBee interface, an infrared interface, a wireless local area network interface, a Universal Serial Bus interface, or a Thunderbolt interface. ### Claim 7 (depends on 1) The keyboard of claim 1, wherein the at least one light source comprises at least one colored light source; and wherein the controller is configured to control a color of the at least one light source based on the electroencephalography measurement data. ### Claim 8 (depends on 1) The keyboard of claim 1, wherein the controller is configured to control a light intensity of the at least one light source based on the electroencephalography measurement data. ### Claim 9 (depends on 2) The keyboard of claim 2, wherein the mental state determination circuit of the keyboard is configured to determine whether the user is feeling calm or frustrated; and wherein the controller of the keyboard is configured to control the at least one light source of the backlight of the keyboard according to a first manner when it is determined that the user is feeling calm and according to a second manner, different from the first manner, when it is determined that the user is feeling frustrated, as the user progresses through the game, thereby enabling the mental state of the user to be observable from the keyboard as the user progresses through the game. ### Claim 10 (depends on 9) The keyboard of claim 9, wherein the first manner comprises controlling the at least one light source of the backlight of the keyboard to emit a blue colored light when the user is determined to be feeling calm and the second manner comprises controlling the at least one light source of the backlight of the keyboard to emit a red colored light when the user is determined to be feeling frustrated. ### Claim 11 (depends on 9) The keyboard of claim 9, wherein the first manner comprises controlling the at least one light source of the backlight of the keyboard to emit light according to a first pattern and the second manner comprises controlling the at least one light source of the backlight of the keyboard to emit light according to a second pattern. ### Claim 12 A method for controlling a keyboard comprising a backlight comprising at least one light source, the method comprising: receiving an electroencephalography measurement data of a user playing a game; and controlling at least one light source of the backlight of the keyboard based on the electroencephalography measurement data of the user, as the user progresses through the game. ### Claim 13 (depends on 12) The method of claim 12, further comprising: determining at least one of a mental state or a motor state based on the electroencephalography measurement data. ### Claim 14 (depends on 13) The method of claim 13, further comprising: determining control data for controlling the at least one light source based on the at least one of mental state or motor state. ### Claim 15 (depends on 12) The method of claim 12, wherein the electroencephalography measurement data comprises data indicating at least one of a mental state or a motor state. ### Claim 16 (depends on 15) The method of claim 15, further comprising: determining control data for controlling the at least one light source based on the at least one of mental state or motor state. ### Claim 17 (depends on 12) The method of claim 12, wherein the electroencephalography measurement data is received using at least one of a wired interface, a wireless interface, a Bluetooth interface, a ZigBee interface, an infrared interface, a wireless local area network interface, a Universal Serial Bus interface, or a Thunderbolt interface. ### Claim 18 (depends on 12) The method of claim 12, wherein the at least one light source comprises at least one colored light source; and wherein the method further comprises controlling a color of the at least one light source based on the electroencephalography measurement data. ### Claim 19 A system comprising: a first keyboard comprising: a first receiver, the first receiver of the first keyboard configured to receive a first user data based on an electroencephalography measurement of a first user playing a game, a first backlight comprising at least one light source, and a first controller configured to control the at least one light source of the first backlight of the first keyboard based on the first user data of the first user, as the first user progresses through the game; and a second keyboard comprising: a second receiver, the second receiver of the second keyboard configured to receive a second user data based on an electroencephalography measurement of a second user playing the game that is also being played by the first user with the first keyboard, a second backlight comprising at least one light source, and a second controller configured to control the at least one light source of the second backlight of the second keyboard based on the second user data of the second user, as the second user progresses through the game; whereby the first and the second user data of the first and second users are simultaneous communicated by the first and the second keyboards via the first and second backlights, as the first and the second users simultaneously progress through the game.