Capacitive sensing unit control method, system and device

Abstract

The invention discloses a capacitive sensing unit control method, a system and a device, and the method comprises the steps: executing a sensing function based on a low-consumption mode, outputting alow-consumption sensing signal, and outputting gesture recognition information according to the low-consumption sensing signal; and obtaining a fingerprint identification starting event, executing thesensing function based on the non-low consumption mode, outputting a non-low-consumption sensing signal, and outputting fingerprint identification information according to the non-low consumption sensing signal. The method comprises the steps of on the basis of a low-consumption mode, outputting a low-consumption sensing signal, and outputting gesture recognition information, so that normal touchrecognition can be met; acquiring a fingerprint identification starting event, outputting the non-low-consumption sensing signal based on a non-low-consumption mode, and outputting fingerprint identification information, so that fingerprint identification under a specific condition can be met; by setting the corresponding starting modes according to different requirements, function switching of touch control and fingerprint recognition can be achieved under the condition of a single sensing structure, an additional recognition structure is not needed, and the manufacturing difficulty of the sensing structure can be reduced.

Description

technical field

[0001] The present invention relates to the technical field of touch control, and in particular, to a control method, system and device of a capacitive sensing unit. Background technique

[0002] Due to security requirements and convenience requirements, identification with smart devices has become the first choice. Due to its extremely high security, fingerprint identification is increasingly used in smart devices to identify users.

[0003] Since the capacitive touch screen has the advantages of not requiring pressure to generate signals and supporting multi-touch technology, most of the existing touch detection devices are capacitive, and fingerprint recognition requires higher sensing than ordinary touch recognition. The fineness is equivalent to the need to set up more and denser sensing elements.

[0004] Most of the existing devices that can support touch and fingerprint recognition operations at the same time adopt the method of arranging the sensing...

Examples

Embodiment 1

[0025] like figure 1 A control method for a capacitive sensing unit shown, comprising the steps of:

[0026] S1. Execute the sensing function based on the low-power mode, output the low-power sensing signal, and output the gesture recognition information according to the low-power sensing signal;

[0027] S2. Acquire a fingerprint recognition activation event, perform a sensing function based on a non-low power consumption mode, output a non-low power consumption sensing signal, and output fingerprint identification information according to the non-low power consumption sensing signal.

[0028] The control method for the capacitive sensing unit further includes an optional step: S3. After completing the fingerprint identification, switch the non-low power consumption mode to the low power consumption mode, and perform the sensing function.

[0029] The fingerprint identification start event includes: obtaining a fingerprint identification request instruction; or, detecting th...

Embodiment 2

[0043] The embodiment of the present invention provides such as figure 2 The control system of a capacitive sensing unit shown includes: a dormant module 1, which performs a sensing function based on a low-consumption mode, outputs a low-consumption sensing signal, and outputs gesture recognition information according to the low-consumption sensing signal; an activation module 2, which is used to acquire fingerprints Identify the startup event, perform the sensing function based on the non-low consumption mode, output the non-low consumption sensing signal, and output the fingerprint identification information according to the non-low consumption sensing signal.

[0044] The low-consumption mode includes: selecting evenly distributed sensing points to perform sensing functions; or selecting evenly distributed sensing points to perform sensing functions at a scanning frequency less than the preset slow threshold; The scanning frequency of the slow threshold performs the sensin...

Embodiment 3

[0048] A capacitive sensing unit control device provided by an embodiment of the present invention (hereinafter referred to as: touch device for short), includes: a sensing unit layer and an IC with several sensing points distributed; the IC is used to control the sensing unit layer based on low power consumption mode to perform the sensing function; the sensing unit layer outputs low-consumption sensing signals; IC outputs gesture recognition information according to the low-consumption sensing signals; Output non-low consumption sensing signal; IC outputs fingerprint identification information according to non-low consumption sensing signal.

[0049] The IC is also used to control the sensing unit layer to switch from the non-low consumption mode to the low consumption mode after the fingerprint identification is completed.

[0050] The entire touch device includes such as image 3 The five parts shown are the cover layer, the sensing element layer (ie, the sensing unit lay...

technical field

[0001] The present invention relates to the technical field of touch control, and in particular, to a control method, system and device of a capacitive sensing unit. Background technique

[0002] Due to security requirements and convenience requirements, identification with smart devices has become the first choice. Due to its extremely high security, fingerprint identification is increasingly used in smart devices to identify users.

[0003] Since the capacitive touch screen has the advantages of not requiring pressure to generate signals and supporting multi-touch technology, most of the existing touch detection devices are capacitive, and fingerprint recognition requires higher sensing than ordinary touch recognition. The fineness is equivalent to the need to set up more and denser sensing elements.

[0004] Most of the existing devices that can support touch and fingerprint recognition operations at the same time adopt the method of arranging the sensing...

Examples

Embodiment 1

[0025] like figure 1 A control method for a capacitive sensing unit shown, comprising the steps of:

[0026] S1. Execute the sensing function based on the low-power mode, output the low-power sensing signal, and output the gesture recognition information according to the low-power sensing signal;

[0027] S2. Acquire a fingerprint recognition activation event, perform a sensing function based on a non-low power consumption mode, output a non-low power consumption sensing signal, and output fingerprint identification information according to the non-low power consumption sensing signal.

[0028] The control method for the capacitive sensing unit further includes an optional step: S3. After completing the fingerprint identification, switch the non-low power consumption mode to the low power consumption mode, and perform the sensing function.

[0029] The fingerprint identification start event includes: obtaining a fingerprint identification request instruction; or, detecting th...

Embodiment 2

[0043] The embodiment of the present invention provides such as figure 2 The control system of a capacitive sensing unit shown includes: a dormant module 1, which performs a sensing function based on a low-consumption mode, outputs a low-consumption sensing signal, and outputs gesture recognition information according to the low-consumption sensing signal; an activation module 2, which is used to acquire fingerprints Identify the startup event, perform the sensing function based on the non-low consumption mode, output the non-low consumption sensing signal, and output the fingerprint identification information according to the non-low consumption sensing signal.

[0044] The low-consumption mode includes: selecting evenly distributed sensing points to perform sensing functions; or selecting evenly distributed sensing points to perform sensing functions at a scanning frequency less than the preset slow threshold; The scanning frequency of the slow threshold performs the sensin...

Embodiment 3

[0048] A capacitive sensing unit control device provided by an embodiment of the present invention (hereinafter referred to as: touch device for short), includes: a sensing unit layer and an IC with several sensing points distributed; the IC is used to control the sensing unit layer based on low power consumption mode to perform the sensing function; the sensing unit layer outputs low-consumption sensing signals; IC outputs gesture recognition information according to the low-consumption sensing signals; Output non-low consumption sensing signal; IC outputs fingerprint identification information according to non-low consumption sensing signal.

[0049] The IC is also used to control the sensing unit layer to switch from the non-low consumption mode to the low consumption mode after the fingerprint identification is completed.

[0050] The entire touch device includes such as image 3 The five parts shown are the cover layer, the sensing element layer (ie, the sensing unit lay...

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