Touch screen anti-interference method applied to POS machine and POS machine

Abstract

The invention provides a touch screen anti-interference method applied to a POS machine and the POS machine. The method comprises the steps that when a transaction instruction is not received, an NFC module is made to be in a non-working state, a touch screen is made to be in a non-NFC mode, the NFC module in the non-working state does not transmit a field intensity signal, and the touch screen in the non-NFC mode is set to be multiple in report point; when a transaction instruction is received, the NFC module is in a card detection state and the touch screen is in an NFC mode, when NFC equipment is detected, the NFC module is in an information reading state and the touch screen is kept in the NFC mode, and the NFC module in the card detection state periodically emits field intensity signals at preset time intervals to detect whether the NFC equipment exists or not. The NFC module in the information reading state continuously transmits field intensity signals to read detected target information of the NFC equipment, the set reporting point of the touch screen in the NFC mode is a single point, and the touch reporting point function is closed when an NFC interference signal is detected. The POS machine applies the method. According to the invention, the problem that the touch screen of the existing POS machine is easily interfered by under-screen NFC (Near Field Communication) can be solved.

Description

Technical Field

[0001] The present invention belongs to the field of POS machines, and more specifically, relates to a touch screen anti-interference method applied to a POS machine and the POS machine. Background Art

[0002] In recent years, the screen-to-body ratio of handheld smart POS machines has become higher and higher, and the thickness has become thinner and thinner. Under this product design trend, more and more manufacturers choose to adopt the layout scheme of placing the NFC antenna under the touch screen, that is, the under-screen NFC antenna technology. However, the under-screen NFC technology may interfere with the touch screen during use. This is mainly because when the NFC field strength driving power is enhanced, it may affect the touch screen signal. Specifically, when the NFC field strength driving power is enhanced, the conventional noise filtering algorithm may not be able to completely solve the interference of NFC noise, thereby affecting the signal of the touch screen and causing the touch screen to trigger the report point incorrectly. For this reason, many manufacturers choose to reduce the NFC field strength power to circumvent the above interference problem, but this solution also brings about the problem of shortening the NFC recognition distance and the NFC card swiping distance not meeting the requirements. Therefore, how to solve the problem of touch screen interference caused by under-screen NFC has become a major problem in the field of smart POS. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that the touch screen of the existing POS machine is easily interfered by the NFC under the screen.

[0004] In order to achieve the above-mentioned object, the present invention provides a touch screen anti-interference method applied to a POS machine and a POS machine.

[0005] According to a first aspect of the present invention, a touch screen anti-interference method applied to a POS machine is provided, wherein the POS machine comprises an NFC module having an under-screen NFC antenna and a touch screen;

[0006] The NFC module is configured to have a non-working state, a card checking state and an information reading state. The NFC module in the non-working state does not transmit a field strength signal externally. The NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 externally at a first time interval T1 to detect whether an NFC device exists. The NFC module in the information reading state continuously transmits a field strength signal externally to read target information of the detected NFC device.

[0007] The touch screen is configured to have an NFC mode and a non-NFC mode, the touch screen in the NFC mode has a single-point touch reporting function and turns off the touch reporting function when an NFC interference signal is detected, and the touch screen in the non-NFC mode has a multi-point touch reporting function;

[0008] The touch screen anti-interference method comprises:

[0009] In the case where no transaction instruction is received, the NFC module is in a non-working state and the touch screen is in a non-NFC mode;

[0010] When a transaction instruction is received, the NFC module is in a card checking state and the touch screen is in an NFC mode; and when an NFC device is detected, the NFC module is in an information reading state and the touch screen is kept in the NFC mode.

[0011] Optionally, the touch screen anti-interference method applied to a POS machine further includes:

[0012] When the transaction is completed, the NFC module is placed in a non-working state and the touch screen is placed in a non-NFC mode.

[0013] Optionally, the first time interval T1 is 150-200 ms.

[0014] Optionally, the first time interval T1 is 180 ms.

[0015] Optionally, the duration T2 is 20 to 50 ms.

[0016] As an option, the duration T2 is 30 ms.

[0017] According to a second aspect of the present invention, there is provided a POS machine, the POS machine comprising an NFC module having an under-screen NFC antenna, a touch screen, a processor and a memory;

[0018] The NFC module is configured to have a non-working state, a card checking state and an information reading state. The NFC module in the non-working state does not transmit a field strength signal externally. The NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 externally at a first time interval T1 to detect whether an NFC device exists. The NFC module in the information reading state continuously transmits a field strength signal externally to read target information of the detected NFC device.

[0019] The touch screen is configured to have an NFC mode and a non-NFC mode, the touch screen in the NFC mode has a single-point touch reporting function and turns off the touch reporting function when an NFC interference signal is detected, and the touch screen in the non-NFC mode has a multi-point touch reporting function;

[0020] When the processor executes the computer program stored in the memory, the processor performs the following steps:

[0021] In the case where no transaction instruction is received, the NFC module is in a non-working state and the touch screen is in a non-NFC mode;

[0022] When a transaction instruction is received, the NFC module is in a card checking state and the touch screen is in an NFC mode; and when an NFC device is detected, the NFC module is in an information reading state and the touch screen is kept in the NFC mode.

[0023] Optionally, the first time interval T1 is 150-200 ms.

[0024] Optionally, the duration T2 is 20 to 50 ms.

[0025] Optionally, the first time interval T1 is 180 ms and the duration T2 is 30 ms.

[0026] The beneficial effects of the present invention are:

[0027] The touch screen anti-interference method applied to a POS machine of the present invention makes the NFC module in a non-working state and the touch screen in a non-NFC mode when no transaction instruction is received. Specifically, the NFC module in the non-working state does not transmit a field strength signal to the outside, and the setting reporting point of the touch screen in the non-NFC mode is multi-point; when a transaction instruction is received, the NFC module is in a card checking state and the touch screen is in NFC mode, and when an NFC device is detected, the NFC module is in an information reading state and the touch screen remains in NFC mode. Specifically, the NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 at a first time interval T1 to detect whether an NFC device exists, the setting reporting point of the touch screen in the NFC mode is a single point, and the touch reporting function is turned off when an NFC interference signal is detected.

[0028] When the POS machine does not receive a transaction instruction, the touch reporting function of the touch screen is turned on and is in a high-sensitivity mode of multi-point reporting; when the NFC module is in a card checking state, the touch screen will intermittently detect the field strength signal emitted by the NFC module that will interfere with it. If the touch screen detects an interfering field strength signal, the touch reporting function is turned off. If the current stage is in the interval between two field strength signals, the touch screen does not detect an interfering field strength signal, then the touch reporting function is turned on and is in a low-sensitivity mode of single-point reporting; when the NFC module is in an information reading state, the touch screen continuously detects an interfering field strength signal, and the touch screen turns off the touch reporting function. It can be seen from this that the touch screen anti-interference method applied to the POS machine of the present invention can effectively solve the problem that the touch screen of the existing POS machine is easily interfered by the NFC under the screen.

[0029] The POS machine of the present invention and the above-mentioned touch screen anti-interference method applied to the POS machine belong to a general inventive concept, and have at least the same beneficial effects as the above-mentioned touch screen anti-interference method applied to the POS machine, and its beneficial effects are no longer repeated here.

[0030] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention may be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to represent the same or similar components.

[0032] Figure 1 The invention shows a flowchart of a touch screen anti-interference method applied to a POS machine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to more fully understand the technical solution of the present invention, the exemplary embodiments of the present invention will be described in more comprehensive and detailed in conjunction with the accompanying drawings below. Obviously, the one or more embodiments of the present invention described below are only one or more of the specific ways in which the technical solution of the present invention can be implemented, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept can be used to implement the technical solution of the present invention, and should not be limited by the exemplary embodiments described. Based on one or more embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present invention.

[0034] Example: Figure 1 The following is a flowchart showing the implementation of the touch screen anti-interference method applied to a POS machine according to an embodiment of the present invention. Figure 1 , a touch screen anti-interference method applied to a POS machine according to an embodiment of the present invention, wherein the POS machine includes an NFC module with an under-screen NFC antenna and a touch screen;

[0035] The NFC module is configured to have a non-working state, a card checking state and an information reading state. The NFC module in the non-working state does not transmit a field strength signal externally. The NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 externally at a first time interval T1 to detect whether an NFC device exists. The NFC module in the information reading state continuously transmits a field strength signal externally to read target information of the detected NFC device.

[0036] The touch screen is configured to have an NFC mode and a non-NFC mode. The touch screen in the NFC mode is set to report a single point and the touch reporting function is turned off when an NFC interference signal is detected. The touch screen in the non-NFC mode is set to report a multi-point point.

[0037] The touch screen anti-interference method comprises the following steps:

[0038] In the case of not receiving a transaction instruction, the NFC module is in a non-working state and the touch screen is in a non-NFC mode;

[0039] When a transaction instruction is received, the NFC module is in a card checking state and the touch screen is in an NFC mode; and when an NFC device is detected, the NFC module is in an information reading state and the touch screen is kept in the NFC mode.

[0040] Furthermore, the touch screen anti-interference method applied to a POS machine according to an embodiment of the present invention further includes:

[0041] When the transaction is completed, the NFC module is placed in a non-operating state and the touch screen is placed in a non-NFC mode.

[0042] Specifically, in an embodiment of the present invention, when the POS machine is in normal use, the NFC module is in a non-working state, and the touch screen is in a non-NFC mode. At this time, the touch point reporting function of the touch screen is normal. When the POS machine needs to make a transaction, the NFC module is in a card checking state, and the touch screen is in an NFC mode. At this time, the touch screen will intermittently detect interference. When interference is detected, the touch point reporting function is turned off, and when no interference is detected, the touch point reporting function is turned on. At this time, it does not affect the NFC card checking, nor does it affect the use of the TP touch point reporting function. When the POS machine detects an NFC device, the NFC module is in an information reading state, and the touch screen remains in the NFC mode. At this time, the touch screen turns off the touch point reporting function due to continuous detection of interference, and the user cannot use the touch function of the touch screen. When the POS machine transaction is completed, the NFC module is in a non-working state, and the touch screen is in a non-NFC mode. At this time, the touch point reporting function of the touch screen is normal. NFC devices include NFC cards and mobile phones that support NFC functions.

[0043] Furthermore, in the embodiment of the present invention, the first time interval T1 is 150-200 ms, preferably 180 ms.

[0044] Furthermore, in the embodiment of the present invention, the duration T2 is 20 to 50 ms, preferably 30 ms.

[0045] Specifically, in an embodiment of the present invention, the NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 at a first time interval T1 to detect whether an NFC device exists. If the first time interval T1 is too long and the duration T2 is too short, the NFC card may not be detected or the card checking time may be too long, affecting the user's card swiping experience; if the first time interval T1 is too short and the duration T2 is too long, the touch screen will continue to detect interference signals, causing the touch reporting function to be continuously turned off, resulting in the user being unable to use the touch screen during the POS card checking period, affecting the user's experience. Therefore, according to the actual debugging effect, the first time interval T1 is limited to 150-200ms, preferably 180ms; the duration T2 is limited to 20-50ms, preferably 30ms.

[0046] The touch screen anti-interference method applied to a POS machine according to the embodiment of the present invention has a longer card swiping distance compared to the existing touch screen anti-interference method of reducing field strength power, which will provide a better user experience and will not affect the user's use of the touch screen. In addition, the existing touch screen anti-interference method of reducing field strength power cannot be consistent in actual mass production because some machines have poor consistency due to hardware antenna differences and other reasons. The touch screen anti-interference method applied to a POS machine according to the embodiment of the present invention can achieve good mass production consistency.

[0047] Accordingly, based on the touch screen anti-interference method applied to a POS machine in an embodiment of the present invention, an embodiment of the present invention further proposes a POS machine, which includes an NFC module with an under-screen NFC antenna, a touch screen, a processor, and a memory;

[0048] The NFC module is configured to have a non-working state, a card checking state and an information reading state. The NFC module in the non-working state does not transmit a field strength signal externally. The NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 externally at a first time interval T1 to detect whether an NFC device exists. The NFC module in the information reading state continuously transmits a field strength signal externally to read target information of the detected NFC device.

[0049] The touch screen is configured to have an NFC mode and a non-NFC mode. The touch screen in the NFC mode is set to report a single point and the touch reporting function is turned off when an NFC interference signal is detected. The touch screen in the non-NFC mode is set to report a multi-point point.

[0050] When a processor executes a computer program stored in memory, it performs the following steps:

[0051] In the case of not receiving a transaction instruction, the NFC module is in a non-working state and the touch screen is in a non-NFC mode;

[0052] When a transaction instruction is received, the NFC module is in a card checking state and the touch screen is in an NFC mode; and when an NFC device is detected, the NFC module is in an information reading state and the touch screen is kept in the NFC mode.

[0053] Although one or more embodiments of the present invention are described above, it should be known to those skilled in the art that the present invention can be implemented in any other form without departing from its subject matter and scope. Therefore, the embodiments described above are illustrative rather than restrictive, and many modifications and substitutions are obvious to those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A touch screen anti-interference method for POS machines. It is characterized in that The POS terminal includes an NFC module with an under-screen NFC antenna and a touch screen; The NFC module is configured to have a non-working state, a card checking state and an information reading state. The NFC module in the non-working state does not transmit a field strength signal externally. The NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 externally at a first time interval T1 to detect whether an NFC device exists. The NFC module in the information reading state continuously transmits a field strength signal externally to read target information of the detected NFC device. The touch screen is configured to have an NFC mode and a non-NFC mode, the touch screen in the NFC mode has a single-point touch reporting function and turns off the touch reporting function when an NFC interference signal is detected, and the touch screen in the non-NFC mode has a multi-point touch reporting function; The touch screen anti-interference method comprises: In the case where no transaction instruction is received, the NFC module is in a non-working state and the touch screen is in a non-NFC mode; When a transaction instruction is received, the NFC module is placed in a card checking state and the touch screen is placed in an NFC mode; and when an NFC device is detected, the NFC module is placed in an information reading state and the touch screen is kept in the NFC mode.

2. The touch screen anti-interference method for POS machine according to claim 1, It is characterized in that Also includes: When the transaction is completed, the NFC module is placed in a non-working state and the touch screen is placed in a non-NFC mode.

3. The touch screen anti-interference method for POS machine according to claim 1, It is characterized in that The first time interval T1 is 150-200 ms.

4. The touch screen anti-interference method for POS machine according to claim 3, It is characterized in that The first time interval T1 is 180 ms.

5. The touch screen anti-interference method for POS machine according to claim 1, It is characterized in that The duration T2 is 20 to 50 ms.

6. The touch screen anti-interference method for POS machine according to claim 5, It is characterized in that The duration T2 is 30ms.

7. A POS machine, It is characterized in that Includes an NFC module with an under-screen NFC antenna, a touch screen, a processor, and a memory; The NFC module is configured to have a non-working state, a card checking state and an information reading state. The NFC module in the non-working state does not transmit a field strength signal externally. The NFC module in the card checking state periodically transmits a field strength signal with a duration of T2 externally at a first time interval T1 to detect whether an NFC device exists. The NFC module in the information reading state continuously transmits a field strength signal externally to read target information of the detected NFC device. The touch screen is configured to have an NFC mode and a non-NFC mode, the touch screen in the NFC mode has a single-point touch reporting function and turns off the touch reporting function when an NFC interference signal is detected, and the touch screen in the non-NFC mode has a multi-point touch reporting function; When the processor executes the computer program stored in the memory, the processor performs the following steps: In the case where no transaction instruction is received, the NFC module is in a non-working state and the touch screen is in a non-NFC mode; When a transaction instruction is received, the NFC module is placed in a card checking state and the touch screen is placed in an NFC mode; and when an NFC device is detected, the NFC module is placed in an information reading state and the touch screen is kept in the NFC mode.

8. The POS machine according to claim 7, It is characterized in that The first time interval T1 is 150-200 ms.

9. The POS machine according to claim 8, It is characterized in that The duration T2 is 20 to 50 ms.

10. The POS machine according to claim 9, It is characterized in that The first time interval T1 is 180 ms, and the duration T2 is 30 ms.

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