# US 2017/0285805 A1 · Terminal, Touch Control Unit, Touchscreen, Screen Protector, and Operation Detection Apparatus and Method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0285805 A1 - Document ID: US20170285805A1 - Status: Published application - Kind: A1 - Application number: 15/508,210 - Filed: 2014-09-03 - Published: 2017-10-05 - Earliest claimed: 2014-09-03 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Jin Zhou; Hang Li; Chao Meng; Chiaching Chu; Chingyi Wang; Bing Liu - Web page: https://patentgrep.com/patent/US20170285805A1 ## CPC - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making} - G06F 3/0393: {Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads} - G06F 3/044: by capacitive means - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract The present disclosure discloses a terminal, a touch control unit, a touchscreen, a screen protector, and an operation detection apparatus and method, and pertains to the field of terminal control. The terminal includes a touchscreen, a controller connected to the touchscreen, and at least one touch control unit, where the touch control unit includes a detection electrode, an induction electrode, and a conducting wire connecting the detection electrode and the induction electrode. The detection electrode is located outside a touch area of the touchscreen, the induction electrode is located in the touch area of the touchscreen, and the induction electrode is coupled to at least one capacitance node on the touchscreen. An existing capacitance node on the touchscreen identifies a touch operation performed by a user on the detection electrode disposed outside the touchscreen, and the terminal is controlled according to the touch operation. ## Claims ### Claim 1 A terminal, comprising: a touchscreen; a controller connected to the touchscreen; and at least one touch control unit; and a detection electrode located outside a touch area of the touchscreen; an induction electrode located in the touch area of the touchscreen and coupled to at least one capacitance node on the touchscreen; and a conducting wire connecting the detection electrode and the induction electrode, wherein the controller is configured to: obtain a capacitance change parameter of the at least one capacitance node and a capacitance change parameter of a capacitance node adjacent to the at least one capacitance node, wherein a capacitance change parameter indicates a capacitance change value of a corresponding capacitance node during a period of time; detect, according to the capacitance change parameter of the at least one capacitance node and the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node, whether the detection electrode receives a touch operation; and generate a touch event indicating the touch operation when a detection result comprises that the detection electrode receives the touch operation. ### Claim 2 (depends on 1) The terminal according to claim 1, wherein the controller is further configured to: detect whether a capacitance change value comprised in the capacitance change parameter of the at least one capacitance node is greater than a first preset threshold; detect whether a capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the first preset threshold; and determine that the detection electrode receives the touch operation when the capacitance change value comprised in the capacitance change parameter of the at least one capacitance node is greater than the first preset threshold, and the capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the first preset threshold. ### Claim 3 (depends on 1) The terminal according to claim 1, wherein the controller is further configured to: detect, before determining that the detection electrode receives the touch operation, whether capacitance change values comprised in capacitance change parameters of capacitance nodes that are separately coupled to N induction sub-electrodes are in a preset proportion; and determine that the detection electrode receives the touch operation when the capacitance change values comprised in the capacitance change parameters of the capacitance nodes that are separately coupled to the N induction sub-electrodes are in the preset proportion, wherein the induction electrode comprises the N induction sub-electrodes, wherein the N induction sub electrodes are insulated from each other, wherein the capacitance nodes that are separately coupled to the N induction sub-electrodes are not adjacent to each other, wherein N is an integer, and wherein N≧2. ### Claim 4 (depends on 1) The terminal according to claim 1, wherein the controller is further configured to: detect whether a capacitance change value comprised in the capacitance change parameter of the at least one capacitance node accords with a predetermined value, wherein the predetermined value is different from the capacitance change value of the at least one capacitance node when the at least one capacitance node receives the touch operation; detect whether a capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to a second preset threshold; and determine that the detection electrode receives the touch operation when the capacitance change value comprised in the capacitance change parameter of the at least one capacitance node accords with the predetermined value, and the capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the second preset threshold. ### Claim 5 A touch control unit, applied to a terminal comprising a touchscreen and a controller, wherein the touch control unit comprises: a detection electrode, located outside a touch area of the touchscreen: an induction electrode, located in the touch area of the touchscreen; and a conducting wire connecting the detection electrode and the induction electrode, wherein the induction electrode is coupled to at least one capacitance node on the touchscreen such that the controller generates a touch event indicating a touch operation when detecting, according to a capacitance change parameter of the at least one capacitance node and a capacitance change parameter of a capacitance node adjacent to the at least one capacitance node, that the detection electrode receives the touch operation, and wherein a capacitance change parameter indicates a capacitance change value of a corresponding capacitance node during a period of time. ### Claim 6 (depends on 5) The touch control unit according to claim 5, wherein the induction electrode comprises N induction sub-electrodes, wherein the N induction sub-electrodes are insulated from each other, wherein capacitance nodes that are separately coupled to the N induction sub-electrodes are not adjacent to each other, wherein N is an integer, and wherein N≧2. ### Claim 7 (depends on 6) The touch control unit according to claim 6, wherein the detection electrode is a single electrode, and wherein the N induction sub-electrodes are separately connected to the detection electrode using the conducting wire. ### Claim 8 (depends on 6) The touch control unit according to claim 6, wherein capacitance change parameters of the capacitance nodes separately corresponding to the N induction sub-electrodes are in a preset proportion when the detection electrode receives the touch operation. ### Claim 9 (depends on 6) The touch control unit according to claim 6, wherein the detection electrode comprises N detection sub-electrodes, wherein the N detection sub-electrodes are insulated from each other, and wherein the N detection sub-electrodes are connected to the N induction sub-electrodes in a one-to-one correspondence manner using the conducting wire. ### Claim 10 (depends on 6) The touch control unit according to claim 6, wherein an area of each induction sub-electrode does not exceed an area of two capacitance nodes. ### Claim 11 (depends on 6) The touch control unit according to claim 6, wherein a width of a part of the conducting wire passing through a capacitance node on the touchscreen ≦1 millimeter (mm). ### Claim 12 (depends on 6) The touch control unit according to claim 6, wherein a capacitance change value of the at least one capacitance node accords with a predetermined value when the detection electrode receives the touch operation, and wherein the predetermined value is different from a the capacitance change value of the at least one capacitance node when the at least one capacitance node receives the touch operation. ### Claim 13 A touchscreen, comprising: at least one touch control unit, wherein, the at least one touch control unit comprises: a detection electrode located outside a touch area of the touchscreen an induction electrode located in the touch area of the touchscreen; and a conducting, wire connecting the detection electrode and the induction electrode, wherein the induction electrode is coupled to at least one capacitance node on the touchscreen such that the controller generates a touch event indicating a touch operation when detecting according to a capacitance change parameter of the at least one capacitance node and a capacitance change parameter of a capacitance node adjacent to the at least one capacitance node, that the detection electrode receives the touch operation, and wherein a capacitance change parameter indicates a capacitance change value of a corresponding capacitance node during a period of time. ### Claim 14 A screen protector, comprising: at least one touch control unit and configured to cover an upper surface of a touchscreen, wherein the at least one touch control unit comprises: a detection electrode located outside a touch area of the touchscreen an induction electrode Located in the touch area of the touchscreen; and a conducting wire connecting the detection electrode and the induction electrode, wherein the induction electrode is coupled to at least one capacitance node on the touchscreen such that the controller generates a touch event indicating a touch operation when detecting, according to a capacitance change parameter of the at least one capacitance node and a capacitance change parameter of a capacitance node adjacent to the at least one capacitance node, that the detection electrode receives the touch operation, and wherein a capacitance change parameter indicates a capacitance change value of a corresponding capacitance node during a period of time. ### Claim 15 An operation detection apparatus, applied to a terminal comprising a touchscreen, a controller connected to the touchscreen, and at least one touch control unit, wherein the touch control unit comprises a detection electrode, an induction electrode, and a conducting wire connecting the detection electrode and the induction electrode, wherein the detection electrode is located outside a touch area of the touchscreen, wherein the induction electrode is located in the touch area of the touchscreen, wherein the induction electrode is coupled to at least one capacitance node on the touchscreen, and wherein the apparatus comprises: a memory; and a processor coupled to the memory and configured to: obtain a capacitance change parameter of the at least one capacitance node and a capacitance change parameter of a capacitance node adjacent to the at least one capacitance node, wherein a capacitance change parameter indicates a capacitance change value of a corresponding capacitance node during a period of time; detect, according to the capacitance change parameter of the at least one capacitance node and the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node, whether the detection electrode receives a touch operation; and generate a touch event indicating the touch operation when a detection result comprises that the detection electrode receives the touch operation. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein the processor is further configured to: detect whether a capacitance change value comprised in the capacitance change parameter of the at least one capacitance node is greater than a first preset threshold; detect whether a capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the first preset threshold; and determine that the detection electrode receives the touch operation when the capacitance change value comprised in the capacitance change parameter of the at least one capacitance node is greater than the first preset threshold, and the capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the first preset threshold. ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein the processor is further configured to: detect, before determining that the detection electrode receives the touch operation, whether capacitance change values comprised in capacitance change parameters of capacitance nodes that are separately coupled to N induction sub-electrodes are in a preset proportion; and determine that the detection electrode receives the touch operation when the capacitance change values comprised in the capacitance change parameters of the capacitance nodes that are separately coupled to the N induction sub-electrodes are in the preset proportion, wherein the induction electrode comprises the N induction sub-electrodes, wherein the N induction sub-electrodes are insulated from each other, wherein the capacitance nodes that are separately coupled to the N induction sub electrodes are not adjacent to each other, wherein N is an integer, and wherein N≧2. ### Claim 18 (depends on 15) The apparatus according to claim 15, wherein the processor is further configured to: detect whether a capacitance change value comprised in the capacitance change parameter of the at least one capacitance node accords with a predetermined value, wherein the predetermined value is different from the capacitance change value of the at least one capacitance node when the at least one capacitance node receives the touch operation; detect whether a capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to a second preset threshold; and determine that the detection electrode receives the touch operation when the capacitance change value comprised in the capacitance change parameter of the at least one capacitance node accords with the predetermined value, and the capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the second preset threshold. ### Claim 19 An operation detection method, applied to a terminal comprising a touchscreen, a controller connected to the touchscreen, and at least one touch control unit, wherein the touch control unit comprises a detection electrode, an induction electrode, and a conducting wire connecting the detection electrode and the induction electrode, wherein the detection electrode is located outside a touch area of the touchscreen, wherein the induction electrode is located in the touch area of the touchscreen, wherein the induction electrode is coupled to at least one capacitance node on the touchscreen, and wherein the method comprises: acquiring, by the terminal, a capacitance change parameter of the at least one capacitance node and a capacitance change parameter of a capacitance node adjacent to the at least one capacitance node, wherein a capacitance change parameter indicates a capacitance change value of a corresponding capacitance node during a period of time; detecting, by the terminal according to the capacitance change parameter of the at least one capacitance node and the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node, whether the detection electrode receives a touch operation; and generating, by the terminal when a detection result comprises that the detection electrode receives the touch operation, a touch event indicating the touch operation. ### Claim 20 (depends on 19) The method according to claim 19, wherein detecting whether the detection electrode receives the touch operation comprises: detecting whether a capacitance change value comprised in the capacitance change parameter of the at least one capacitance node is greater than a first preset threshold; detecting whether a capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the first preset threshold; and determining that the detection electrode receives the touch operation when the capacitance change value comprised in the capacitance change parameter of the at least one capacitance node is greater than the first preset threshold, and the capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the first preset threshold. ### Claim 21 (depends on 19) The method according to claim 19, further comprising: detecting, by the terminal before determining that the detection electrode receives the touch operation, whether capacitance change values comprised in capacitance change parameters of capacitance nodes that are separately coupled to N induction sub-electrodes are in a preset proportion; and determining that the detection electrode receives the touch operation, by the terminal when the capacitance change values comprised in the capacitance change parameters of the capacitance nodes that are separately coupled to the N induction sub-electrodes are in the preset proportion, wherein the induction electrode comprises the N induction sub-electrodes, wherein the N induction sub-electrodes are insulated from each other, wherein the capacitance nodes that are separately coupled to the N induction sub-electrodes are not adjacent to each other, wherein N is an integer, and wherein N≧2. ### Claim 22 (depends on 19) The method according to claim 19, wherein detecting whether the detection electrode receives the touch operation comprises: detecting whether a capacitance change value comprised in the capacitance change parameter of the at least one capacitance node accords with a predetermined value; detecting whether a capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to a second preset threshold, wherein the predetermined value is different from a the capacitance change value of the at least one capacitance node when the at least one capacitance node receives the touch operation; and determining that the detection electrode receives the touch operation when the capacitance change value comprised in the capacitance change parameter of the at least one capacitance node accords with the predetermined value, and the capacitance change value comprised in the capacitance change parameter of the capacitance node adjacent to the at least one capacitance node is less than or equal to the second preset threshold.