# US 11,907,474 B2 · Infrared touch scanning method, apparatus and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,907,474 B2 - Document ID: US11907474B2 - Status: Granted - Kind: B2 - Application number: 18/038,446 - Filed: 2020-12-30 - Published: 2024-01-11 - Granted: 2024-02-20 - Earliest claimed: 2020-12-21 - Assignees: Anhui Hongcheng Opto-Electronics Co., Ltd. - Applicants: Anhui Hongcheng Opto-Electronics Co., Ltd. - Inventors: Jiasen Wu; Jiangnan Gong - Web page: https://patentgrep.com/patent/US11907474B2 ## CPC - G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)} - G06F 3/042: by opto-electronic means - G06F 3/0428: {by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual (sensing beam interruptions in a planar beam grid of an optical touch-screen G06F3/0421)} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract The present application provides an infrared touch scanning method, including: grouping transmitting lights located on a frame of an infrared touch screen to obtain at least two transmitting light groups; setting at least two scanning modes and setting one of the scanning modes as a basic scanning mode; establishing a corresponding relationship between the at least two scanning modes and a writing speed; performing a scanning using the basic scanning mode to determine a current writing speed of a user; determining a corresponding scanning mode from the scanning modes according to the corresponding relationship and the current writing speed of the user; and performing a scanning using the determined corresponding scanning mode. The present application further provides an infrared touch scanning control apparatus and a storage medium. ## Claims ### Claim 1 An infrared touch scanning method, comprising: grouping transmitting lights located on a frame of an infrared touch screen to obtain at least two transmitting light groups; setting at least two scanning modes and setting one of the scanning modes as a basic scanning mode, wherein each of the scanning modes corresponds to at least one of the transmitting light groups and the scanning modes each correspond to different numbers of transmitting lights; establishing a corresponding relationship between the at least two scanning modes and a writing speed, wherein the faster the writing speed, the less the number of the transmitting lights corresponding to the scanning mode associated with the writing speed; performing a scanning using the basic scanning mode to determine a current writing speed of a user; determining a corresponding scanning mode from the scanning modes according to the corresponding relationship and the current writing speed of the user; and performing a scanning using the determined corresponding scanning mode. ### Claim 2 (depends on 1) The method according to claim 1, wherein grouping the transmitting lights located on the frame of the infrared touch screen comprises: circularly numbering M transmitting lights located on the frame of the infrared touch screen from 1 to n in sequence from left to right, wherein n is a natural number greater than 1; and grouping the transmitting lights with a same number into one group to obtain n transmitting light groups. ### Claim 3 (depends on 1) The method according to claim 1, wherein a number of the scanning modes is less than or equal to a number of the transmitting light groups, and wherein one of the scanning modes corresponds to one of the transmitting light groups, and another of the scanning modes corresponds to all of the transmitting light groups. ### Claim 4 (depends on 1) The method according to claim 1, wherein performing the scanning using the basic scanning mode to determine the current writing speed of the user comprises: determining the transmitting lights corresponding to the basic scanning mode; performing a one-by-one scanning by turning on the transmitting lights one by one to obtain a plurality of touch points of the user within a unit time; determining a moving distance of the touch points within the unit time according to the plurality of touch points; and determining the current writing speed of the user according to the moving distance of the touch points within the unit time. ### Claim 5 (depends on 1) The method according to claim 1, wherein performing the scanning using the determined corresponding scanning mode comprises: determining the transmitting lights corresponding to the determined corresponding scanning mode; and performing a one-by-one scanning by turning on the transmitting lights corresponding to the determined corresponding scanning mode one by one. ### Claim 6 An infrared touch scanning control apparatus, comprising: a grouping module configured to group transmitting lights located on a frame of an infrared touch screen to obtain at least two transmitting light groups; a scanning mode setting module configured to set at least two scanning modes and setting one of the scanning modes as a basic scanning mode, wherein each of the scanning modes corresponds to at least one of the transmitting light groups and the scanning modes each correspond to different numbers of transmitting lights; a scanning mode mapping module configured to establish a corresponding relationship between the at least two scanning modes and a writing speed, wherein the faster the writing speed, the less the number of the transmitting lights corresponding to the scanning mode associated with the writing speed; a writing speed detecting module configured to perform a scanning using the basic scanning mode to determine a current writing speed of a user; a scanning mode determining module configured to determine a corresponding scanning mode from the scanning modes according to the corresponding relationship and the current writing speed of the user; and a scanning control module configured to perform a scanning using the determined corresponding scanning mode. ### Claim 7 (depends on 6) The apparatus according to claim 6, wherein the writing speed detecting module comprises: a first transmitting light determining unit configured to determine the transmitting lights corresponding to the basic scanning mode; a first scanning unit configured to perform a one-by-one scanning by turning on the transmitting lights one by one to obtain a plurality of touch points of the user within a unit time; a moving distance detecting unit configured to determine a moving distance of the touch points within the unit time according to the plurality of touch points; and a speed determining unit configured to determine the current writing speed of the user according to the moving distance of the touch points within the unit time. ### Claim 8 (depends on 6) The apparatus according to claim 6, wherein the scanning control module comprises: a second transmitting light determining unit configured to determine the transmitting lights corresponding to the determined corresponding scanning mode; and a second scanning unit configured to perform a one-by-one scanning by turning on the transmitting lights corresponding to the determined corresponding scanning mode one by one. ### Claim 9 An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements an infrared touch scanning method comprising: grouping transmitting lights located on a frame of an infrared touch screen to obtain at least two transmitting light groups; setting at least two scanning modes and setting one of the scanning modes as a basic scanning mode, wherein each of the scanning modes corresponds to at least one of the transmitting light groups and the scanning modes each correspond to different numbers of transmitting lights; establishing a corresponding relationship between the at least two scanning modes and a writing speed, wherein the faster the writing speed, the less the number of the transmitting lights corresponding to the scanning mode associated with the writing speed; performing a scanning using the basic scanning mode to determine a current writing speed of a user; determining a corresponding scanning mode from the scanning modes according to the corresponding relationship and the current writing speed of the user; and performing a scanning using the determined corresponding scanning mode. ### Claim 10 (depends on 1) A non-transitory computer readable storage medium storing computer instructions for causing a computer to execute the infrared touch scanning method according to claim 1. ### Claim 11 (depends on 6) The apparatus according to claim 6, wherein the grouping module is configured to group the transmitting lights located on the frame of the infrared touch screen by: circularly numbering M transmitting lights located on the frame of the infrared touch screen from 1 to n in sequence from left to right, wherein n is a natural number greater than 1; and grouping the transmitting lights with a same number into one group to obtain n transmitting light groups. ### Claim 12 (depends on 6) The apparatus according to claim 6, wherein a number of the scanning modes is less than or equal to a number of the transmitting light groups, and wherein one of the scanning modes corresponds to one of the transmitting light groups, and another of the scanning modes corresponds to all of the transmitting light groups. ### Claim 13 (depends on 9) The electronic device according to claim 9, wherein grouping the transmitting lights located on the frame of the infrared touch screen comprises: circularly numbering M transmitting lights located on the frame of the infrared touch screen from 1 to n in sequence from left to right, wherein n is a natural number greater than 1; and grouping the transmitting lights with a same number into one group to obtain n transmitting light groups. ### Claim 14 (depends on 9) The electronic device according to claim 9, wherein a number of the scanning modes is less than or equal to a number of the transmitting light groups, and wherein one of the scanning modes corresponds to one of the transmitting light groups, and another of the scanning modes corresponds to all of the transmitting light groups. ### Claim 15 (depends on 9) The electronic device according to claim 9, wherein performing the scanning using the basic scanning mode to determine the current writing speed of the user comprises: determining the transmitting lights corresponding to the basic scanning mode; performing a one-by-one scanning by turning on the transmitting lights one by one to obtain a plurality of touch points of the user within a unit time; determining a moving distance of the touch points within the unit time according to the plurality of touch points; and determining the current writing speed of the user according to the moving distance of the touch points within the unit time. ### Claim 16 (depends on 9) The electronic device according to claim 9, wherein performing the scanning using the determined corresponding scanning mode comprises: determining the transmitting lights corresponding to the determined corresponding scanning mode; and performing a one-by-one scanning by turning on the transmitting lights corresponding to the determined corresponding scanning mode one by one.