# US 11,443,019 B2 · Methods and devices for fingerprint unlocking > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,019 B2 - Document ID: US11443019B2 - Status: Granted - Kind: B2 - Application number: 16/263,563 - Filed: 2019-01-31 - Published: 2019-08-15 - Granted: 2022-09-13 - Earliest claimed: 2018-02-13 - Assignees: Beijing Xiaomi Mobile Software Co., Ltd. - Applicants: Beijing Xiaomi Mobile Software Co., Ltd. - Inventors: Zhongsheng Jiang - Web page: https://patentgrep.com/patent/US11443019B2 ## CPC - G06F 21/32: using biometric data, e.g. fingerprints, iris scans or voiceprints - G06F 1/3231: Monitoring the presence, absence or movement of users - G06F 1/3262: {Power saving in digitizer or tablet} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 3/04144: {using an array of force sensing means (position sensing using the local deformation of sensor cells G06F3/0447)} - G06F 21/81: by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations - G06V 40/1365: {Matching; Classification} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract A method of unlocking an electronic device with fingerprints is provided. The method includes: detecting a first contact parameter between an object and a touch screen of the electronic device; in response to determining that the first contact parameter meets a first preset condition to awaken a fingerprint recognition function of the electronic device, detecting a second contact parameter between the object and the touch screen; and awakening the fingerprint recognition function; in response to determining that the second contact parameter meets a second preset condition to perform the fingerprint recognition function, collecting fingerprint information of the object with a fingerprint sensor configured in the touch screen; and in response to determining that the fingerprint information matches pre-stored reference fingerprint information, unlocking the electronic device. ## Claims ### Claim 1 A method for unlocking an electronic device with fingerprints, comprising: detecting a first contact parameter between an object and a touch screen of the electronic device; in response to determining that the first contact parameter meets a first preset condition to awaken a fingerprint recognition function of the electronic device, detecting a second contact parameter between the object and the touch screen; and simultaneously awakening the fingerprint recognition function; in response to determining that the second contact parameter meets a second preset condition to perform the fingerprint recognition function, collecting fingerprint information of the object with a fingerprint sensor configured in the touch screen; and in response to determining that the fingerprint information matches pre-stored reference fingerprint information, unlocking the electronic device. ### Claim 2 (depends on 1) The method of claim 1, wherein: the first contact parameter comprises at least one pressure value applied by the object on the touch screen; the first preset condition comprises that a maximum pressure value of the at least one pressure value is greater than a preset threshold; the second contact parameter comprises a contact position of the object with the touch screen; and the second preset condition comprises that the contact position is located in a fingerprint sensing region on the touch screen. ### Claim 3 (depends on 2) The method of claim 2, wherein detecting the second contact parameter and simultaneously awakening the fingerprint recognition function comprises: awakening a touch sensor configured in the touch screen and the fingerprint recognition function; wherein the touch sensor is to detect the contact position of the object with the touch screen after being awakened. ### Claim 4 (depends on 3) The method of claim 3, wherein before detecting the first contact parameter, the method further comprises: controlling a pressure sensor configured in the electronic device to enter an operating state when detecting that the touch screen is in a screen-off state, so as to detect the at least one pressure value applied by the object on the touch screen. ### Claim 5 (depends on 4) The method of claim 4, wherein awakening the touch sensor and the fingerprint recognition function comprises: sending, by the pressure sensor, a first interrupt signal for awakening the touch sensor to the touch sensor; and sending, by the pressure sensor, a second interrupt signal for awakening the fingerprint sensor to the fingerprint sensor. ### Claim 6 (depends on 1) The method of claim 1, wherein: the first contact parameter comprises a contact position of the object with the touch screen; the first preset condition comprises that the contact position is located in a fingerprint sensing region on the touch screen; the second contact parameter comprises at least one pressure value applied by the object on the touch screen; and the second preset condition comprises that a maximum pressure value of the at least one pressure value is greater than a preset threshold. ### Claim 7 (depends on 6) The method of claim 6, wherein detecting the second contact parameter and simultaneously awakening the fingerprint recognition function comprises: awakening a pressure sensor configured in the electronic device and the fingerprint recognition function; wherein the pressure sensor is to detect the at least one pressure value applied by the object on the touch screen after being awakened. ### Claim 8 (depends on 7) The method of claim 7, wherein before detecting the first contact parameter, the method further comprises: controlling a touch sensor configured in the touch screen to enter an operating state when detecting that the touch screen is in a screen-off state, so as to detect the contact position of the object with the touch screen. ### Claim 9 (depends on 8) The method of claim 8, wherein awakening the pressure sensor and the fingerprint recognition function comprises: sending, by the touch sensor, a first interrupt signal for awakening the pressure sensor to the pressure sensor; sending, by the touch sensor, a second interrupt signal for awakening the fingerprint sensor to the fingerprint sensor. ### Claim 10 An electronic device, comprising: a processor; and a storage medium storing machine executable instructions; wherein, upon loading of the machine executable instructions, the processor is caused to execute: detecting a first contact parameter between an object and a touch screen of the electronic device; in response to determining that the first contact parameter meets a first preset condition to awaken a fingerprint recognition function of the electronic device, detecting a second contact parameter between the object and the touch screen; and simultaneously awakening the fingerprint recognition function; in response to determining that the second contact parameter meets a second preset condition to perform the fingerprint recognition function, collecting fingerprint information of the object with a fingerprint sensor configured in the touch screen; and in response to determining that the fingerprint information matches pre-stored reference fingerprint information, unlocking the electronic device. ### Claim 11 (depends on 10) The device of claim 10, wherein: the first contact parameter comprises at least one pressure value applied by the object on the touch screen; the first preset condition comprises that a maximum pressure value of the at least one pressure value is greater than a preset threshold; the second contact parameter comprises a contact position of the object with the touch screen; and the second preset condition comprises that the contact position is located in a fingerprint sensing region on the touch screen. ### Claim 12 (depends on 11) The device of claim 11, wherein the processor is caused to detect the second contact parameter and simultaneously awaken the fingerprint recognition function by: awakening a touch sensor configured in the touch screen and the fingerprint recognition function; wherein the touch sensor is to detect the contact position of the object with the touch screen after being awakened. ### Claim 13 (depends on 12) The device of claim 12, wherein before detecting the first contact parameter, the processor is further caused to: control a pressure sensor configured in the electronic device to enter an operating state when detecting that the touch screen is in a screen-off state, so as to detect the at least one pressure value applied by the object on the touch screen. ### Claim 14 (depends on 10) The device of claim 10, wherein: the first contact parameter comprises a contact position of the object with the touch screen; the first preset condition comprises that the contact position is located in a fingerprint sensing region on the touch screen; the second contact parameter comprises at least one pressure value applied by the object on the touch screen; and the second preset condition comprises that a maximum pressure value of the at least one pressure value is greater than a preset threshold. ### Claim 15 (depends on 14) The device of claim 14, wherein the processor is caused to detect the second contact parameter and simultaneously awaken the fingerprint recognition function by: awakening a pressure sensor configured in the electronic device and the fingerprint recognition function; wherein the pressure sensor is to detect the at least one pressure value applied by the object on the touch screen after being awakened. ### Claim 16 (depends on 15) The device of claim 15, wherein before detecting the first contact parameter, the processor is caused to: control a touch sensor configured in the touch screen to enter an operating state when detecting that the touch screen is in a screen-off state, so as to detect the contact position of the object with the touch screen. ### Claim 17 A non-transitory machine readable storage medium storing machine executable instructions, the machine executable instructions cause a processor to execute acts comprising: detecting a first contact parameter between an object and a touch screen of an electronic device; in response to determining that the first contact parameter meets a first preset condition to awaken a fingerprint recognition function of the electronic device, detecting a second contact parameter between the object and the touch screen; and simultaneously awakening the fingerprint recognition function; in response to determining that the second contact parameter meets a second preset condition to perform the fingerprint recognition function, collecting fingerprint information of the object with a fingerprint sensor configured in the touch screen; and in response to determining that the fingerprint information matches pre-stored reference fingerprint information, unlocking the electronic device. ### Claim 18 (depends on 17) The non-transitory machine readable storage medium of claim 17, wherein: the first contact parameter comprises at least one pressure value applied by the object on the touch screen; the first preset condition comprises that a maximum pressure value of the at least one pressure value is greater than a preset threshold; the second contact parameter comprises a contact position of the object with the touch screen; and the second preset condition comprises that the contact position is located in a fingerprint sensing region on the touch screen. ### Claim 19 (depends on 18) The non-transitory machine readable storage medium of claim 18, wherein detecting the second contact parameter and simultaneously awakening the fingerprint recognition function comprises: awakening a touch sensor configured in the touch screen and the fingerprint recognition function; wherein the touch sensor is to detect the contact position of the object with the touch screen after being awakened. ### Claim 20 (depends on 17) The non-transitory machine readable storage medium of claim 17, wherein: the first contact parameter comprises a contact position of the object with the touch screen; the first preset condition comprises that the contact position is located in a fingerprint sensing region on the touch screen; the second contact parameter comprises at least one pressure value applied by the object on the touch screen; and the second preset condition comprises that a maximum pressure value of the at least one pressure value is greater than a preset threshold.