WO2015109823A1 - 近场通信系统、方法和终端 - Google Patents

近场通信系统、方法和终端 Download PDF

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Publication number
WO2015109823A1
WO2015109823A1 PCT/CN2014/084435 CN2014084435W WO2015109823A1 WO 2015109823 A1 WO2015109823 A1 WO 2015109823A1 CN 2014084435 W CN2014084435 W CN 2014084435W WO 2015109823 A1 WO2015109823 A1 WO 2015109823A1
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WO
WIPO (PCT)
Prior art keywords
terminal
communication
coupling capacitance
channel
terminals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/084435
Other languages
English (en)
French (fr)
Inventor
阙滨城
廖志川
汪成
陈小军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Huiding Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Huiding Technology Co Ltd filed Critical Shenzhen Huiding Technology Co Ltd
Priority to EP14879321.9A priority Critical patent/EP3098974B1/en
Priority to KR1020167018345A priority patent/KR101871085B1/ko
Publication of WO2015109823A1 publication Critical patent/WO2015109823A1/zh
Priority to US15/218,002 priority patent/US9742467B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/22—Capacitive coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present invention relates to the field of computer technologies, and in particular, to a near field communication system, method, and terminal. Background technique
  • the signal interaction is realized by adding the master-slave transceiver mode on the basis of the original capacitive touch recognition.
  • This communication method has the characteristics of controllable communication distance, signal security, etc., and can be used for identity confirmation and confidential transmission.
  • the above-mentioned short-distance communication method is coupled by the electric field signal of the touch screen. Since the communication process is affected by many distribution parameters, it is easy to make the electric field signal coupling effect worse or even completely canceled by using these distribution parameters. Therefore, communication between the touch screen of the terminal and the touch screen may fail. Even when the touch screen of the terminal is close to the touch screen, there is still a problem of unsuccessful communication between the terminals. Usually, when we call the communication between the terminals unsuccessfully, the orientation of the terminal or the angle between the terminals is communication. Blind zone or communication dead zone.
  • the present invention aims to solve at least one of the above technical problems.
  • a first object of the present invention is to propose a near field communication system.
  • the system avoids the poor coupling of the screen signal, so that the user can normally communicate with the first terminal at any angle by using the second terminal, which improves the success rate and efficiency of the communication, reduces the user's extra operation, and improves the operation. user experience.
  • a second object of the present invention is to propose a terminal.
  • a third object of the present invention is to propose a method of near field communication.
  • a near field communication system includes: a second terminal, configured to adjust a connection relationship between the driving channel and/or the sensing channel in the second terminal when detecting that a coupling capacitance value between the first terminal and the second terminal is less than a preset value And adjusting the coupling capacitance value between the second terminal and the first terminal, and detecting that the coupling capacitance value is greater than or equal to the pre-determination between the first terminal and the second terminal When the value is set, communication between the second terminal and the first terminal is established.
  • the near field communication system of the embodiment of the present invention in the process of performing communication between the first terminal and the second terminal, if the second terminal finds that the quality of the communication signal between the second terminal and the first terminal is not good, Switching the electrical connection relationship between the driving channel and/or the sensing channel of the second terminal. Therefore, when the communication between the second terminal and the first terminal is unsuccessful, the method of switching the transceiver channel by software avoids the coupling difference of the communication signal, so that the user can use the second terminal to be normal with the first terminal at any angle. Communication improves the success rate and efficiency of communication while reducing the user's extra operations and improving the user experience.
  • the terminal of the second aspect of the present invention includes: a first detecting module, configured to detect whether a coupling capacitance value between the terminal and another terminal is less than a preset value; and an adjustment module, configured to detect When the coupling capacitance value between the terminal and the other terminal is less than the preset value, adjusting a connection relationship between the driving channel and/or the sensing channel in the terminal to adjust between the terminal and the other terminal
  • the establishing module configured to establish the terminal and the other terminal when detecting that the coupling capacitance value between the terminal and the other terminal is greater than or equal to the preset value Communication between.
  • the terminal of the embodiment of the present invention in the process of communication between other terminals and the terminal, if the terminal finds that the quality of the communication signal between the terminal and the other terminal is not good, the terminal can be switched by the driving channel and/or the sensing channel of the terminal. Electrical connection relationship. Therefore, when the communication between the terminal and other terminals is unsuccessful, the method of switching the transceiver channel by software can avoid the situation that the communication signal is poorly coupled, so that the user can normally communicate with other terminals at any angle, thereby improving communication. At the same time, the success rate and efficiency reduce the user's extra operations and improve the user experience.
  • a method for near field communication includes the following steps: adjusting a medium driving channel of the terminal when a coupling capacitance value between the detecting terminal and another terminal is less than a preset value And/or displaying a connection relationship of the channels to adjust a coupling capacitance value between the terminal and the other terminal; and detecting that the coupling capacitance value between the terminal and the other terminal is greater than or equal to When the preset value is established, communication between the terminal and the other terminal is established.
  • a method of near field communication which performs communication between other terminals and terminals
  • the terminal finds that the quality of the communication signal between the terminal and the other terminal is not good, the electrical connection relationship of the driving channel and/or the sensing channel of the terminal may be switched. Therefore, when the communication between the terminal and other terminals is unsuccessful, the method of switching the transceiver channel by software can avoid the situation that the communication signal is poorly coupled, so that the user can normally communicate with other terminals at any angle, thereby improving communication. At the same time, the success rate and efficiency reduce the user's extra operations and improve the user experience.
  • 1 is a schematic diagram of communication between terminals in the prior art
  • FIG. 2 is a schematic structural diagram of a touch screen and a touch manager in a prior art terminal
  • FIG. 3 is a schematic structural diagram of a touch screen and a switch unit in a prior art terminal
  • FIG. 6 is a schematic structural diagram of a near field communication system according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of sensing channel switching of a second terminal according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of driving channel switching of a second terminal according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of driving channel switching according to an embodiment of the present invention. Schematic diagram of the terminal;
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 11 is a flow chart of a method of near field communication in accordance with one embodiment of the present invention. detailed description
  • Any process or method description in the flowcharts or otherwise described herein may be understood as a module, segment or module representing code comprising one or more executable instructions for implementing a particular logical function or process.
  • the scope of the preferred embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in the reverse order, depending on the order in which they are illustrated. It should be understood by those skilled in the art to which the embodiments of the present invention pertain.
  • FIG. 1 is a schematic diagram of communication between terminals in the prior art.
  • Fig. 1 when the terminals are in close communication, although the terminals are closely adjacent to each other, there is usually a certain angle between the terminals. When the angle is at a certain specific position, the signal coupling between the touch screen of the terminal and the touch screen is very poor, resulting in communication failure between the terminals. When such a communication is normal, the user can only re-establish communication by changing the orientation between the terminals. This method greatly increases the burden on the user and affects the user experience.
  • FIG. 2 is a schematic structural diagram of a touch screen and a touch manager in a prior art terminal.
  • the terminal 10' includes a touch screen 1 ⁇ and a touch manager 12'.
  • the touch screen 1 is an input device of the terminal 10', and is usually a capacitive touch screen, and functions to receive data and transmit data in short-distance communication between the touch screens.
  • the touch manager 12 ′ is a management module for managing the touch screen 1 , and is mainly used for performing sensing analysis on the touch operation of the user, and reporting the position coordinates of the user touch operation to the processor in the terminal.
  • the touch screen 1 includes two channels, one is a channel for driving signals ⁇ ⁇ , and the other is a channel for sensing signals Xi Xm, and the driving channel and the sensing channel have several traces. It should be understood that the drive channel may be Xi Xm, and the sensing channel is ⁇
  • the driving channel and the sensing channel of the touch screen 1 send a touch signal generated by the user's touch operation to the touch manager 12'.
  • the touch management 12' further includes a switch unit 12, a receiving unit 122' and a driving unit 123'.
  • the switch unit 12 is configured to manage the driving channel and the sensing channel of the touch screen 1 ⁇ , and each channel of the touch screen 1 is connected to a specific circuit module through the same;
  • the receiving unit 122 is configured to receive the signal of the touch screen 1, and then transmit the digitized signal to the digital processing and microprocessor unit for processing through the control of the switching unit 12A;
  • the driving unit 124' is configured to generate an analog signal for excitation, And the driving unit 124' has a certain driving capability, and after the signal passes through the switching channel of the switching unit 12, the excitation signal can be transmitted to the specific driving channel.
  • Fig. 3 is a schematic view showing the structure of the touch panel 1 and the switch unit 12 in the prior art terminal.
  • the switch unit 12 is composed of a switch and a buffer matrix.
  • the signals input or output from the touch screen 1 ⁇ pass through the respective switch circuits, and each switch circuit can be connected to the positive pole of the power supply, the system ground GND, and the input buffer end. Or output buffer.
  • all the channels of the touch screen 1 can be configured with relevant electrical characteristics according to actual needs.
  • the goal we want to achieve on the physical level is to make the voltage V P2 at both ends as large as possible. If the voltage V P2 across P2 is too small, the signal received by the mobile phone P 2 will be poor, and the communication between the mobile phone and the mobile phone P 2 cannot be successfully established. In order to simplify the analysis, ignoring the resistance of the mobile phone's resistive load, the following derivation can be drawn:
  • V P2 0, C Gl C SYS
  • the P phone system 2 connected by a software driven switching channels and / or sensing channels, the coupling capacitance C t may be changed between the touch screen and a touch screen phone handset. .
  • the near field communication system includes a first terminal 10 and a second terminal 20.
  • the second terminal 20 is configured to adjust a connection relationship between the driving channel and/or the sensing channel in the second terminal 20 when detecting that the coupling capacitance value between the first terminal 10 and the second terminal 20 is less than a preset value, Adjusting a coupling capacitance value between the second terminal 20 and the first terminal 10, and establishing a second terminal 20 and a number when detecting that a coupling capacitance value between the first terminal 10 and the second terminal 20 is greater than or equal to a preset value Communication between a terminal 10.
  • the first terminal 10 and the second terminal 20 may be, but are not limited to, one of a mobile phone, a notebook computer, a tablet computer, a palmtop computer, a POS machine, etc., and the first terminal 10 is a communication.
  • the second terminal 20 is a follower of the communication.
  • the first terminal 10 is the originator of the communication and the second terminal 20 is the follower of the communication.
  • the first terminal 10 and the second terminal 20 are both mobile phones, and the first terminal 10 and the second terminal 20 each have a touch display screen as an example to describe the near field communication system of the embodiment of the present invention.
  • the second terminal 20 After the second terminal 20 approaches the first terminal 10, the second terminal 20 enters a communication mode of short-range communication, and then the second terminal 20 initializes its own settings, for example, selects a drive channel and a sensing channel of its own display screen, and switches a switch unit connected to the display drive channel and the sensing channel, a receiving unit connected to the display screen, and the like.
  • the display screen can be a touch screen, preferably a capacitive touch screen.
  • the second terminal 20 detects whether the coupling capacitance value between the first terminal 10 and the second terminal 20 is smaller than a preset value. Specifically, after the second terminal 20 enters the communication mode, the second terminal 20 is in the receiving state, and the second terminal 20 can monitor the first terminal 10 sensed by the second terminal 20 through the display screen in the communication mode. The communication signal sent. The second terminal 20 can receive the communication signal sent by the first terminal 10 or send the communication signal to the first terminal 10 through a part of the driving channel and the sensing channel of the second terminal 20, for example.
  • the second terminal 20 can be set to receive/transmit the communication signal through the entire screen of the display screen, or set the second terminal 20 to receive/transmit the communication signal through a part of the screen of the display screen, whereby the letter of the second terminal 20 can be improved.
  • the noise ratio, and the amount of power consumed by the second terminal 20 is saved. That is, the second terminal 20 can detect in real time whether the size of the coupling capacitance value between the first terminal 10 and the second terminal 20 is less than a preset value within a preset window time.
  • the second terminal 20 determines that the first terminal 10 and the second terminal are within a preset window time
  • the second terminal 20 adjusts the driving channel and/or the sensing channel in the second terminal 20 by determining that the coupling capacitance value is less than the preset value and determining that the communication signal between the first terminal 10 and the second terminal 20 is a valid signal.
  • the connection relationship adjusts the coupling capacitance value between the second terminal 20 and the first terminal 10.
  • the second terminal 20 does not receive the communication signal within the preset window time, or the received communication signal is relatively weak, that is, the coupling capacitance value between the first terminal 10 and the second terminal 20 is small or If it is zero, the switching between the driving channel and the sensing channel of the second terminal 20 is performed to realize another distributed electrical characteristic of the second terminal 20. It should be understood that if the second terminal 20 determines that the coupling capacitance value between the first terminal 10 and the second terminal 20 is greater than or equal to a preset value within a preset window time, the second terminal 20 and the first terminal may be established. Communication between 10.
  • the second terminal 20 determines that the first terminal is within a preset window time.
  • the second terminal 20 can also detect whether the time required for the second terminal 20 to establish communication with the first terminal 10 is greater than a preset threshold after entering the communication mode. And when the time taken to establish communication is greater than a preset threshold, the communication mode is exited. In other words, if the second terminal 20 judges that the total time taken to establish the communication flow exceeds the preset threshold, the second terminal 20 can directly end the communication with the first terminal 10.
  • the second terminal 20 when the second terminal 20 adjusts the connection relationship of the driving channel and/or the sensing channel in the second terminal 20, the second terminal 20 may set the second terminal 20 such as a display screen or a communication module. At least one drive channel and/or sensing channel is switched to a preset point.
  • the preset point may be a positive power source, a system ground GND, an input buffer end, or an output buffer end, or the preset point may also be suspended, that is, the driving channel and/or the sensing channel are in a floating state.
  • the display can now sensing channel to ⁇ 7 ⁇ ⁇ 2 System ground GND. Then, the second terminal 20 re-detects whether the coupling capacitance value between the first terminal 10 and the second terminal 20 is less than a preset value, if it is detected that the coupling capacitance value between the first terminal 10 and the second terminal 20 is greater than or equal to the pre- The value is set to establish communication between the first terminal 10 and the second terminal 20.
  • the driving channel or the sensing channel in the second terminal 20 can be continuously switched to the preset point.
  • the drive channel of the display screen can be connected to the system ground GND at this time.
  • the second terminal 20 then continues to repeatedly detect the detection flow of the coupling capacitance value until the second terminal 20 detects that the coupling capacitance value is greater than or equal to the preset value.
  • the second terminal 20 can arbitrarily switch the driving channel or the sensing channel in the second terminal 20, and the switching manner can be random. That is, which drive channels in the second terminal 20 are switched And/or the sensing channel and switching to which preset point the channels are connected to may be randomly selected by the second terminal 20. If the value of the coupling capacitance between the first terminal 10 and the second terminal 20 after the channel is switched is still less than the preset value, the communication signal received by the second terminal 20 is still not good enough, and the action of the switching channel may not be sufficiently large. . At this time, the second terminal 20 can switch a part of the driving channel and/or the sensing channel. The manner of switching the driving channel or the sensing channel can be switched in any combination, and should be within the scope of the protection of the present invention. In order to avoid redundancy, the manner of switching the channel combination is not described in detail herein.
  • the second terminal 20 is a notebook computer having a short-range communication module, or
  • the second terminal 20 is a notebook or the like having a capacitive touch panel.
  • the second terminal 20 can also detect the coupling capacitance value between the first terminal 10 and the second terminal 20 by the above manner, and switch the short distance in the second terminal 20
  • the drive channel or the sensing channel in the communication module or the touch panel achieves an increase in the coupling capacitance value between the first terminal 10 and the second terminal 20, which are all included in the scope of the invention.
  • the second terminal 20 detects that the coupling capacitance value between the first terminal 10 and the second terminal 20 is greater than or equal to a preset value, and the second terminal 20 determines that the communication signal received by the second terminal 20 is the first terminal. After the signal initiated by 10, the second terminal 20 can enter the transmission mode by the receiving mode, and send a response signal to the first terminal 10. The second terminal 20 establishes a communication connection with the first terminal 10, and then after the related communication is processed, the second terminal 20 ends the communication with the first terminal 10, i.e., the second terminal 20 exits the communication mode.
  • the second terminal 20 drives the channel/induction channel in the second terminal 20, after the second terminal 20 establishes communication with the first terminal 10, that is, during the communication between the two terminals, the second terminal 20 When the communication signal is received/transmitted, the configuration mode of the channel after switching is always maintained. Thereby, it is ensured that the circuit characteristics between the second terminal 20 and the first terminal 10 are always consistent, and the communication between the second terminal 20 and the first terminal 10 is guaranteed to be normal.
  • the second terminal 20 may also be the originating end of the communication
  • the first terminal 10 is the compliant terminal of the communication, that is, the second terminal 20 is the initiator of the communication
  • the first terminal 10 is the Followers of communications.
  • the second terminal 20 transitions from the other working state to the communication state, that is, the second terminal 20 enters the communication mode and is in the transmitting state.
  • the second terminal 20 then initializes its own settings, and then when the second terminal 20 is in the transmitting state, the first terminal 10 detects whether the coupling capacitance value between the first terminal 10 and the second terminal 20 is less than a preset value.
  • the second terminal 20 After the second terminal 20 transmits the signal, the second terminal 20 switches its own state, and enters the receiving state from the transmitting state. At this time, the second terminal 20 starts to detect whether the coupling capacitance value between the first terminal 10 and the second terminal 20 is less than a preset value, and detects that the coupling capacitance value between the first terminal 10 and the second terminal 20 is less than At the preset value, the coupling capacitance value between the second terminal 20 and the first terminal 10 is adjusted by adjusting the connection relationship between the driving channel and/or the sensing channel in the second terminal 20. It should be understood that the manner in which the second terminal 20 detects the coupling capacitance value and adjusts the coupling capacitance value is the same as the method used in the above, and is not repeated here.
  • the switch in the process of performing communication between the first terminal and the second terminal, if the second terminal finds that the coupling capacitance between the second terminal and the first terminal is small, the switch can be switched.
  • the electrical connection relationship between the driving channel and/or the sensing channel in the second terminal, so that when the communication between the second terminal and the first terminal is unsuccessful, the method of switching the transceiver channel by software is adopted to avoid the coupling difference of the communication signal, so that The user can normally communicate with the first terminal at any angle by using the second terminal, which improves the success rate and efficiency of the communication, reduces the additional operation of the user, and improves the user experience.
  • the present invention also proposes a terminal.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 9, the terminal includes a first detecting module 210, an adjusting module 220, and an establishing module 230.
  • the first detecting module 210 is configured to detect whether a coupling capacitance value between the terminal and other terminals is less than a preset value.
  • the terminal and other terminals may be, but are not limited to, one of a mobile phone, a notebook computer, a tablet computer, a palmtop computer, a POS machine, etc., and the other terminals are the originating end of the communication, and the terminal is the communication.
  • the other terminal is the originator of the communication and the terminal is the follower of the communication.
  • the terminal of the embodiment of the present invention is described by taking other terminals and terminals as mobile phones, and other terminals and terminals each having a touch display screen as an example.
  • the terminal After the terminal approaches other terminals, the terminal enters the communication mode of the short-range communication, and then the terminal initializes its own settings, for example, selecting the drive channel and the sensing channel of its own display screen, and switching the connection with the display drive channel and the sensing channel.
  • the display screen can be a touch screen, preferably a capacitive touch screen.
  • the first detecting module 210 detects whether the coupling capacitance value between the terminal and the other terminal is less than a preset value. Specifically, after the terminal enters the communication mode, the terminal is in the receiving state, and the first detecting module 210 can monitor the other terminals that the terminal senses through the display screen in the communication mode. The communication signal sent. The first detecting module 210 can receive communication signals sent by other terminals or send communication signals to other terminals through a part of the driving channel and the sensing channel in the display, for example.
  • the first detecting module 210 can set the terminal to receive/transmit the communication signal through the entire screen of the display screen, or the first detecting module 210 sets the terminal to receive/transmit the communication signal through a part of the screen of the display screen, thereby improving the terminal. Signal to noise ratio and save power consumed by the terminal. That is, the first detecting module 210 can detect in real time whether the size of the coupling capacitance value between the other terminal and the second terminal is less than a preset value within a preset window time.
  • the adjusting module 220 is configured to adjust a connection relationship between the driving channel and/or the sensing channel in the terminal when the coupling capacitance value between the detecting terminal and the other terminal is less than a preset value, so as to adjust a coupling capacitance value between the terminal and the other terminal.
  • the adjusting module 220 Adjust the coupling capacitance between the terminal and other terminals by adjusting the connection relationship between the drive channel and/or the sensing channel in the terminal. That is, if the terminal does not receive the communication signal within the preset window time, or the received communication signal is weak, that is, the coupling capacitance value between the terminal and other terminals is small or zero, then the terminal is driven. The switching of the channel and the sensing channel to achieve another distributed electrical characteristic of the terminal.
  • the establishing module 230 can establish communication between the terminal and the other terminal.
  • the adjustment module 220 when the adjustment module 220 adjusts the connection relationship between the drive channel and/or the sensing channel in the terminal, the adjustment module 220 may at least one drive channel and/or induction in the terminal, such as a display screen or a communication module.
  • the channel switches to the preset point.
  • the preset point may be the positive power source, the system ground GND, the input buffer end or the output buffer end, or the preset point may also be suspended, that is, the driving channel and/or the sensing channel are in a floating state. For example, as shown in Figure 7, if ⁇ is the driving channel of the terminal display and Xi Xm is the sensing channel of the terminal display, the sensing channel of the display can be displayed at this time.
  • the first detecting module 210 re-detects whether the coupling capacitance value between the terminal and the other terminal is less than a preset value. If the coupling capacitance value between the terminal and the other terminal is greater than or equal to the preset value, the establishing module 230 establishes the terminal. Communication with other terminals. If the first detection module 210 detects that the coupling capacitance value between the terminal and the other terminal is still less than the preset value, the adjustment module 220 may continue to switch the driving channel or the sensing channel in the terminal to the preset point. For example, as shown in Figure 8, the drive channel of the display can be connected to the system ground GND.
  • the adjustment module 220 can arbitrarily switch the driving channel or the sensing channel in the terminal, and the switching manner can be random. That is, the adjustment module 220 switches which drive channels and/or sensing channels in the terminal and switches which preset points are connected to the channels, which may be randomly selected by the adjustment module 220. If the value of the coupling capacitance between the terminal and other terminals after the channel is switched is still less than the preset value, the communication signal received by the terminal is still not good enough, which may be caused by insufficient action of the switching channel. At this time, the adjustment module 220 can switch a part of the driving channel and/or the sensing channel. The manner of switching the driving channel or the sensing channel can be switched in any combination, and should be within the scope of the protection of the present invention. In order to avoid redundancy, the manner of switching the channel combination is not described in detail herein.
  • the first detecting module 210 can also detect the coupling capacitance value between the terminal and other terminals by using the above manner, and switch the driving channel or the sensing channel in the short-distance communication module or the touch panel in the other terminal through the adjusting module 220.
  • the channel implementation increases the coupling capacitance value between the terminal and other terminals, and these should be included in the scope of the invention.
  • the establishing module 230 is configured to establish communication between the terminal and other terminals when the coupling capacitance value between the detecting terminal and the other terminal is greater than or equal to a preset value.
  • the terminal After the first detecting module 210 detects that the coupling capacitance value between the terminal and the other terminal is greater than or equal to a preset value, and the first detecting module 210 determines that the communication signal received by the terminal is a signal initiated by another terminal, the terminal It can enter the transmission mode from the receiving mode and send a response signal to other terminals.
  • the setup module 230 establishes a communication connection between the terminal and other terminals, and then after processing the related communication, the setup module 230 ends the communication with the other terminal, i.e., the terminal exits the communication mode.
  • the adjustment module 220 drives the channel/induction channel in the switching terminal
  • the establishing module 230 establishes communication between the terminal and other terminals, that is, during the communication between the two terminals
  • the adjusting module 220 receives/transmits the communication.
  • the signal is always kept in the configuration mode of the channel after switching. Thereby, it is ensured that the circuit characteristics between the terminal and other terminals are always consistent, and the communication between the terminal and the terminal is guaranteed to be normal.
  • the terminal may also be the originating end of the communication, the other terminals are the followers of the communication, that is, the terminal acts as the initiator of the communication, and the other terminals are the followers of the communication.
  • the terminal transits from the other working state to the communication state, that is, the terminal enters After entering the communication mode, it is in the transmission state.
  • the terminal then initializes its own settings, and then when the terminal is in the transmitting state, the other terminal detects whether the coupling capacitance value between the other terminal and the terminal is less than a preset value. After the terminal transmits the signal, the terminal switches its own state and enters the receiving state from the transmitting state.
  • the terminal starts to detect whether the coupling capacitance value between the terminal and the other terminal is less than a preset value, and when detecting that the coupling capacitance value between the terminal and the other terminal is less than a preset value, adjusting the driving channel in the terminal and/or Or the connection relationship of the sensing channel, adjust the coupling capacitance value between the terminal and other terminals. It should be understood that the manner in which the terminal detects the coupling capacitance value and adjusts the coupling capacitance value is the same as the method used in the above, and is not repeated here.
  • the terminal can switch the electrical of the driving channel and/or the sensing channel in the terminal.
  • the connection relationship can be used to avoid the poor coupling of the communication signal when the terminal communicates with other terminals unsuccessfully, so that the user can use the terminal to communicate with other terminals at any angle.
  • success rate and efficiency in communication the user's extra operation is reduced and the user experience is improved.
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 10, the terminal includes a first detecting module 210, an adjusting module 220, an establishing module 230, a second detecting module 240, and a control module 250.
  • the second detecting module 240 is configured to detect whether the time for establishing communication between the terminal and other terminals is greater than a preset threshold.
  • the control module 250 is configured to control the terminal to exit the communication mode when the time for detecting that the terminal establishes communication with other terminals is greater than a preset threshold.
  • the second detecting module 240 may further detect that the terminal requests to establish and other after entering the communication mode. Whether the time used for communication of the terminal is greater than a preset threshold, and when the time that the second detecting module 24 detects that the communication is established is greater than a preset threshold, the control module 250 controls the terminal to exit the communication mode. In other words, if the terminal judges that the total time spent establishing the communication process exceeds the preset threshold, the terminal can directly end communication with other terminals.
  • the terminal in the embodiment of the present invention when detecting whether the connection establishment time between the terminal and the other terminal exceeds a preset threshold, pushes out the communication mode when the preset threshold is exceeded. As a result, you can save money on the terminal.
  • the present invention also proposes a method of near field communication.
  • a method for near field communication according to an embodiment of the present invention will be described below with reference to a terminal of an embodiment of the second aspect of the present invention. Specifically, reference may be made to the content in the terminal of the embodiment of the second aspect of the present invention.
  • FIG. 11 is a flow chart of a method of near field communication in accordance with one embodiment of the present invention. As shown in FIG. 11, the method of near field communication includes the following steps.
  • the terminal when the terminal approaches other terminals, the terminal enters the communication mode, and in the communication mode, detects whether the coupling capacitance value between the other terminals and the terminal is less than a preset value.
  • part of the drive channel and the sensing channel of the terminal receive signals transmitted by other terminals or transmit signals to other terminals.
  • the control terminal exits the communication mode.
  • At least one of the drive channels and/or the sense channels in the terminal is switched to a preset point.
  • the preset point is the positive power supply, the system ground, the input buffer end or the output buffer end.
  • S102 Establish communication between the terminal and other terminals when the value of the coupling capacitance between the detecting terminal and the other terminal is greater than or equal to a preset value.
  • the channel and/or the sensing channel can be switched through the terminal.
  • the electrical connection relationship of the channel, so that when the terminal communicates with other terminals unsuccessfully, the way of transmitting and receiving the channel is switched by software, so that the communication signal is poorly coupled, so that the user can normally communicate with other terminals at any angle. Increases the success rate and efficiency of communication while reducing the user's extra operations and improving the user experience.
  • portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
  • a plurality of steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • it can be implemented with any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals Discrete logic circuit, ASIC with suitable combination logic gate, programmable gate array (PGA), field programmable gate array (FPGA)
  • PGA programmable gate array
  • FPGA field programmable gate array
  • a structure, material or feature is included in at least one embodiment or example of the invention.
  • the schematic representation of the above terms does not necessarily mean the same embodiment or example.
  • the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
  • the near field communication system, method, and terminal in the process of performing communication between the first terminal and the second terminal, if the second terminal finds that the coupling capacitance between the second terminal and the first terminal is small
  • the electrical connection relationship between the driving channel and/or the sensing channel in the second terminal can be switched, so that when the communication between the second terminal and the first terminal is unsuccessful, the transceiver channel is switched by software to avoid the coupling difference of the communication signal.
  • the user can normally communicate with the first terminal at any angle by using the second terminal, which improves the success rate and efficiency of the communication, reduces the additional operation of the user, and improves the user experience.

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Abstract

本发明提出一种近场通信系统、方法和终端。其中，系统包括：第一终端；第二终端，用于当检测第一终端与第二终端之间的耦合电容值小于预设值时，调整第二终端中驱动通道和/或感应通道的连接关系，以调整第二终端和第一终端之间的耦合电容值，并在检测第一终端与第二终端之间耦合电容值大于或等于预设值时，建立第二终端和第一终端之间的通信。根据本发明实施例的近场通信系统，避免屏信号出现耦合差的情况，使得用户使用第二终端在任何角度均可以与第一终端正常通信，提升了通信时的成功率和效率的同时，减少了用户额外的操作，提升了用户体验。

Description

说明书
近场通信系统、 方法和终端
技术领域
本发明涉及计算机技术领域，尤其涉及一种近场通信系统、方法和终端。 背景技术
终端之间采用电容式触摸屏之间相互耦合的方式进行近距离通信时， 在原 有电容屏触摸识别的基础上， 通过增加主从收发模式来实现信号的交互。 这种 通信方式具有通信距离可控、 信号安全等特点， 可用于身份确认及密要传输。
目前， 上述近距离通信的方式是通过触摸屏的电场信号进行耦合的， 由于 通信过程中受到很多的分布参数的影响， 采用这些分布参数很容易使电场信号 耦合效果变差， 甚至完全抵消。 因此， 会导致终端的触摸屏与触摸屏之间的通 信失败。 即使是在终端的触摸屏与触摸屏紧贴得很近的情况下， 仍然会出现终 端之间通信不成功问题， 通常我们称此终端之间通信不成功时终端的方位或终 端之间的角度为通信盲区或者通信死区。
目前存在的问题是， 当终端之间出现通信导常的情况时， 用户通常只能通 过改变终端之间的方位， 重新尝试建立终端之间的通信。 然而这种方式不仅会 导致终端之间通信时受到外界因素的限制， 终端之间通信时的成功率很差、 效 率低。 而且会在很大程度上增加用户的操作负担， 影响用户的体验。 发明内容
本发明旨在至少解决上述技术问题之一。
为此， 本发明的第一个目的在于提出一种近场通信系统。 该系统避免屏信 号出现耦合差的情况， 使得用户使用第二终端在任何角度均可以与第一终端正 常通信， 提升了通信时的成功率和效率的同时， 减少了用户额外的操作， 提升 了用户体验。
本发明的第二个目的在于提出一种终端。
本发明的第三个目的在于提出一种近场通信的方法。
为了实现上述目的， 本发明第一方面实施例的近场通信系统， 包括： 第一 终端； 第二终端， 用于当检测所述第一终端与所述第二终端之间的耦合电容值 小于预设值时， 调整所述第二终端中驱动通道和 /或感应通道的连接关系， 以调 整所述第二终端和所述第一终端之间的所述耦合电容值， 并在检测所述第一终 端与所述第二终端之间所述耦合电容值大于或等于所述预设值时， 建立所述第 二终端和所述第一终端之间的通信。
根据本发明实施例的近场通信系统， 在第一终端和第二终端之间进行通信 的过程中， 如果第二终端发现第二终端和第一终端之间通信信号的质量不好， 可通过切换第二终端的驱动通道和 /或感应通道的电气连接关系。 由此， 可以在 第二终端与第一终端通信不成功时， 通过软件切换收发通道的方式， 避免通信 信号出现耦合差的情况， 使得用户使用第二终端在任何角度均可以与第一终端 正常通信， 提升了通信时的成功率和效率的同时， 减少了用户额外的操作， 提 升了用户体验。
为了实现上述目的，本发明第二方面实施例的终端，包括：第一检测模块， 用于检测所述终端与其他终端之间的耦合电容值是否小于预设值； 调整模块， 用于当检测所述终端与所述其他终端之间的耦合电容值小于所述预设值时， 调 整所述终端中驱动通道和 /或感应通道的连接关系， 以调整所述终端和所述其他 终端之间的所述耦合电容值； 以及建立模块， 用于在检测所述终端与所述其他 终端之间的所述耦合电容值大于或等于所述预设值时， 建立所述终端和所述其 他终端之间的通信。
根据本发明实施例的终端， 在其它终端和终端之间进行通信的过程中， 如 果终端发现终端和其它终端之间的通信信号的质量不好， 可通过切换终端的驱 动通道和 /或感应通道的电气连接关系。 由此， 可以在终端与其它终端通信不成 功时， 通过软件切换收发通道的方式， 避免通信信号出现耦合差的情况， 使得 用户使用终端在任何角度均可以与其它终端正常通信， 提升了通信时的成功率 和效率的同时， 减少了用户额外的操作， 提升了用户体验。
为了实现上述目的， 本发明第三方面实施例的近场通信的方法， 包括以下 歩骤： 当检测终端与其它终端之间的耦合电容值小于预设值时， 调整所述终端 的中驱动通道和 /或显示通道的连接关系， 以调整所述终端和所述其它终端之间 的耦合电容值； 以及在检测所述终端与所述其它终端之间的所述耦合电容值大 于或等于所述预设值时， 建立所述终端和所述其它终端之间的通信。
根据本发明实施例的近场通信的方法， 在其它终端和终端之间进行通信的 过程中， 如果终端发现终端和其它终端之间的通信信号的质量不好， 可通过切 换终端的驱动通道和 /或感应通道的电气连接关系。 由此， 可以在终端与其它终 端通信不成功时， 通过软件切换收发通道的方式， 避免通信信号出现耦合差的 情况， 使得用户使用终端在任何角度均可以与其它终端正常通信， 提升了通信 时的成功率和效率的同时， 减少了用户额外的操作， 提升了用户体验。
本发明附加的方面和优点将在下面的描述中部分给出， 部分将从下面的描 述中变得明显， 或通过本发明的实践了解到。 附图说明
本发明上述的和 /或附加的方面和优点从下面结合附图对实施例的描述中 将变得明显和容易理解， 其中，
图 1是现有技术中终端之间通信的示意图；
图 2是现有技术终端中触摸屏和触控管理器的结构示意图；
图 3是现有技术终端中触摸屏和开关单元的结构示意图；
图 4是现有技术中终端之间通信的等效模型的示意图；
图 5是现有技术中终端之间通信的等效模型的电路图；
图 6是根据本发明一个实施例的近场通信系统的结构示意图；
图 7是根据本发明一个实施例的第二终端的感应通道切换的示意图； 图 8是根据本发明一个实施例的第二终端的驱动通道切换的示意图； 图 9是根据本发明一个实施例的终端的结构示意图；
图 10是根据本发明一个具体实施例的终端的结构示意图； 以及
图 11是根据本发明一个实施例的近场通信的方法的流程图。 具体实施方式
下面详细描述本发明的实施例， 所述实施例的示例在附图中示出， 其中自 始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 下面通过参考附图描述的实施例是示例性的， 仅用于解释本发明， 而不能理解 为对本发明的限制。 相反， 本发明的实施例包括落入所附加权利要求书的精神 和内涵范围内的所有变化、 修改和等同物。
在本发明的描述中， 需要理解的是， 术语 "第一" 、 "第二"等仅用于描 述目的， 而不能理解为指示或暗示相对重要性。 在本发明的描述中， 需要说明 的是， 除非另有明确的规定和限定， 术语 "相连" 、 "连接"应做广义理解， 例如， 可以是固定连接， 也可以是可拆卸连接， 或一体地连接； 可以是机械连 接， 也可以是电连接； 可以是直接相连， 也可以通过中间媒介间接相连。 对于 本领域的普通技术人员而言， 可以具体情况理解上述术语在本发明中的具体含 义。 此外， 在本发明的描述中， 除非另有说明， "多个" 的含义是两个或两个 以上。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为， 表 示包括一个或更多个用于实现特定逻辑功能或过程的歩骤的可执行指令的代码 的模块、 片段或部分， 并且本发明的优选实施方式的范围包括另外的实现， 其 中可以不按所示出或讨论的顺序， 包括根据所涉及的功能按基本同时的方式或 按相反的顺序， 来执行功能， 这应被本发明的实施例所属技术领域的技术人员 所理解。
下面参考附图描述根据本发明实施例的近场通信系统、 方法和终端。
图 1是现有技术中终端之间通信的示意图。 如图 1所示， 终端之间进行近 距离通信时， 虽然终端之间是互相紧贴着的， 但是终端之间通常会存在一定的 夹角。 当夹角在某几个特定位置时， 终端的触摸屏与触摸屏之间的信号耦合会 非常差， 导致终端之间通信失败。 当出现这种通信导常的情况时， 用户只能通 过改变终端之间的方位， 重新建立通信， 这种方式会很大程序上增加用户的负 担， 影响用户体验效果。
举例而言， 图 2是现有技术终端中触摸屏和触控管理器的结构示意图。 如 图 2所示，终端 10' 中包括触摸屏 1Γ 和触控管理器 12' 。其中，触摸屏 1 是终端 10' 的输入设备， 通常为电容式触摸屏， 在触摸屏之间近距离通信中起 到接收数据和发射数据的作用。触控管理器 12' 是管理触摸屏 1 的管理模块， 主要用于对用户的触摸操作进行传感解析的处理， 并且向终端中的处理器上报 用户触摸操作的位置坐标。 触摸屏 1 包含两路通道， 一路是驱动信号的通道 Υι~Υη， 另一路是感应信号的通道 Xi Xm , 驱动通道和感应通道均有若干条走 线。 应当理解的是， 也可以是驱动通道为 Xi Xm, 感应通道为 Υ^
触摸屏 1 的驱动通道和感应通道会将用户触摸操产生的触摸信号发送 至触控管理器 12' ，触控管理 12' 内部又包括开关单元 12 、接收单元 122' 和驱动单元 123' 。 其中， 开关单元 12 用于对触摸屏 1Γ 的驱动通道和感 应通道进行管理，触摸屏 1 的每一个通道均通过其连接到特定的电路模块上; 接收单元 122用于接收触摸屏 1 的信号， 然后通过开关单元 12Γ 的控制， 将数字化之后的信号传送给数字处理及微处理器单元进行处理； 驱动单元 124' 用于产生用于激励的模拟信号， 并且驱动单元 124' 具有一定的驱动能力， 其 信号经过开关单元 12 的切换通道后， 可以实现将激励信号传送给特定的驱 动通道。
进一歩而言， 图 3是现有技术终端中触摸屏 1 和开关单元 12 的结构 示意图。 如图 3所示， 开关单元 12 由开关及缓冲矩阵组成， 从触摸屏 1Γ 输入或输出的信号都会经过各自的开关电路， 每个开关电路都可以连接到电源 的正极、 系统地 GND、 输入缓冲端或者输出缓冲端。 由此， 触摸屏 1 的所 有通道都可以根据实际的需求， 配置相关的电气特性。
因此，终端之间在进行近距离通信时，例如，如图 4所示，两个手机 和 ，其 中， 手机 为信号发送端， 手机 为信号接收端。 手机 的系统地 GND为 Gi， 手机 的系统地 GND为 G2。 在手机 f 和手机 P2进行近距离通信时， 手机 的触 摸屏与手机 P2的触摸屏之间的耦合电容为 Ctp， 手机 的触摸屏与手机 的系统 地02的耦合电容为 Cg2， 手机 P2的触摸屏与手机 的系统地01的耦合电容为 Cgl， 手机 和手机 P2的系统地01和02之间的耦合电容为 Csys。 因此， 我们可以进一 歩地得出如图 5所示的电路图， 其中， 手机 为信号发射端， 其可以用交流信 号源来代替， 手机 为信号接收端， 其可以用电阻负载来代替。
在实际应用中，物理层面上我们想要到达到的目的就是让 两端的电压 VP2 要尽量大。 如果 P2两端的电压 VP2太小， 会导致手机 P2接收到的信号不好， 导 致不能成功建立手机 和手机 P2之间的通信。 为了简化分析， 忽略手机 的电 阻负载的阻值， 可以得出如下推导：
Figure imgf000007_0001
VP2 = 0， CGl CSYS
CTP CG2
也就是说， 存在很多种情况组合， 会导致 VP2 = 0， 即手机 P2的耦合信号为 0， 这种情况在手机 和手机 P2之间固定方位的物理模型上是不能避免。
然而在本发明的实施例中， 在手机 P2的系统中， 通过软件切换驱动通道和 / 或感应通道的连接方式， 可以改变手机 的触摸屏与手机 的触摸屏之间的耦 合电容 Ct。。通过改变 Ct。，手机 的触摸屏与手机 的系统地02的耦合电容 Ce2以 及手机 P2的触摸屏与手机 的系统地01的耦合电容 cgl也会顺之发生变化。 由此， 可以避免 VP2 = 0的情况发生， 即避免手机 P2的耦合信号为 0的情况发生。
图 6是根据本发明一个实施例的近场通信系统的结构示意图。如图 6所示， 近场通信系统包括第一终端 10和第二终端 20。
具体地，第二终端 20用于当检测第一终端 10与第二终端 20之间的耦合电 容值小于预设值时， 调整第二终端 20中驱动通道和 /或感应通道的连接关系， 以调整第二终端 20和第一终端 10之间的耦合电容值， 并在检测第一终端 10 与第二终端 20之间的耦合电容值大于或等于预设值时， 建立第二终端 20和第 一终端 10之间的通信。
在本发明的实施例中， 第一终端 10和第二终端 20均可以是但不限制于手 机、 笔记本电脑、 平板电脑、 掌上电脑、 POS 机等中的一种， 且第一终端 10 为通信的发起端， 第二终端 20为通信的随从端。 换言之， 第一终端 10是通信 的发起者， 第二终端 20是通信的随从者。 具体地， 以第一终端 10和第二终端 20均为手机，且第一终端 10和第二终端 20均具有触摸显示屏为例说明一下本 发明实施例的近场通信系。
在第二终端 20接近第一终端 10之后，第二终端 20进入近距离通信的通信 模式， 然后第二终端 20初始化其自身的设置， 例如， 选择其自身显示屏的驱动 通道和感应通道、 切换与该显示屏驱动通道和感应通道相连接的开关单元、 设 置与该显示屏相连接的接收单元等。 其中， 该显示屏可为触摸屏， 优选地可为 电容式触摸屏。
然后，第二终端 20检测第一终端 10与第二终端 20之间耦合电容值是否小 于预设值。 具体而言， 在第二终端 20进入通信模式之后， 此时第二终端 20处 于接收状态， 第二终端 20在通信模式中可实时监听第二终端 20通过其显示屏 感应到的第一终端 10发送的通信信号。 其中， 第二终端 20可通过第二终端 20 的例如显示屏中的部分驱动通道和感应通道接收第一终端 10发送的通信信号 或者向第一终端 10发送通信信号。 换言之， 可以设置第二终端 20通过显示屏 的整个屏幕接收 /发送通信信号， 或者设置第二终端 20通过其显示屏的一部分 屏幕接收 /发送通信信号， 由此， 可以提高第二终端 20的信噪比， 并且节约第 二终端 20消耗的电量。 也就是说， 第二终端 20可实时检测在预设的窗口时间 内， 第一终端 10与第二终端 20之间耦合电容值的大小是否小于预设值。
然后， 如果第二终端 20判断在预设的窗口时间内第一终端 10与第二终端 之间的耦合电容值小于预设值， 且判断第一终端 10与第二终端 20之间的通信 信号为有效信号，则第二终端 20通过调整第二终端 20中驱动通道和 /或感应通 道的连接关系，调整第二终端 20和第一终端 10之间的耦合电容值。也就是说， 如果第二终端 20在预设的窗口时间内没有接收到通信信号，或者接收到的通信 信号比较弱， 即第一终端 10和第二终端 20之间的耦合电容值较小或者为零， 则进行对第二终端 20的驱动通道和感应通道的切换， 以实现第二终端 20另外 一种分布的电器特性。应当理解的是，如果第二终端 20判断在预设的窗口时间 内第一终端 10与第二终端 20之间耦合电容值大于或者等于预设值， 则可建立 第二终端 20和第一终端 10之间的通信。
在本发明的实施例中， 在第二终端 20判断在预设的窗口时间内第一终端
10与第二终端 20之间耦合电容值小于预设值之后，第二终端 20还可检测第二 终端 20进入通信模式后请求建立与第一终端 10的通信所用的时间是否大于预 设阈值，并在建立通信所用的的时间大于预设阈值时，退出通信模式。换言之， 如果第二终端 20判断建立通信流程花费的总时间超过了预设阈值，则第二终端 20可直接结束和第一终端 10的通信。
在本发明的实施例中，第二终端 20在调整第二终端 20中驱动通道和 /或感 应通道的连接关系时， 第二终端 20可将第二终端 20中例如显示屏或者通信模 块等的至少一个驱动通道和 /或感应通道切换至预设点。 其中， 预设点可为电源 正极、 系统地 GND、 输入缓冲端或输出缓冲端等， 或者预设点还可为悬空， 即 将驱动通道和 /或感应通道处于悬空状态。 例如， 如图 7所示， 如果 Υη为第 二终端 20显示屏的驱动通道， Xi Xm为第二终端 20显示屏的感应通道的话， 此时可以将显示屏的感应通道 Χ^ΠΧ2接到系统地 GND。 然后第二终端 20重新 检测第一终端 10与第二终端 20之间的耦合电容值是否小于预设值， 如果检测 到第一终端 10与第二终端 20之间的耦合电容值大于或者等于预设值， 则建立 第一终端 10与第二终端 20之间的通信。 如果检测到第一终端 10与第二终端 20之间的耦合电容值仍然小于预设值， 则可继续将第二终端 20中驱动通道或 者感应通道切换至预设点。例如，如图 8所示，此时可以将显示屏的驱动通道 接到系统地 GND。 然后第二终端 20继续重复检测耦合电容值的检测流程， 直 至第二终端 20检测耦合电容值大于或者等于预设值为止。
应当理解的是， 第二终端 20可任意切换第二终端 20中驱动通道或者感应 通道， 切换的方式可以是随机的。也就是说， 切换第二终端 20中哪些驱动通道 和 /或感应通道以及切换这些通道连接至哪个预设点均可以是由第二终端 20随 机选取的。 如果切换通道之后第一终端 10与第二终端 20之间的耦合电容值仍 然小于预设值，说明第二终端 20接收到的通信信号仍然不够好，有可能是切换 通道的动作不够大导致的。 此时第二终端 20可再多切换一部分驱动通道和 /或 感应通道。切换的驱动通道或者感应通道的方式可以任何组合的方式进行切换， 均应当在本发明保护的范围之内， 为了避免冗余， 切换通道组合的方式在此处 不进行详述。
此外， 应当理解的是， 本领域技术人员还可对上述的方式进行其他等同替 换和变化， 例如， 如果第一终端 10为手机， 第二终端 20为具有近距离通信模 块的笔记本电脑，或者第二终端 20为具有电容式触摸板的笔记本等，第二终端 20亦可通过上述的方式检测第一终端 10和第二终端 20之间的耦合电容值，并 通过切换第二终端 20 中近距离通信模块或者触摸板中的驱动通道或者感应通 道实现增大第一终端 10和第二终端 20之间的耦合电容值， 这些均应包含在发 明的保护范围内。
之后，在第二终端 20检测到第一终端 10与第二终端 20之间的耦合电容值 大于或者等于预设值， 且第二终端 20判断第二终端 20接收到的通信信号是第 一终端 10发起的信号之后， 第二终端 20可由接收模式进入至发送模式， 发送 响应信号至第一终端 10。 第二终端 20与第一终端 10建立通信连接， 然后在处 理完相关的通信之后， 第二终端 20结束与第一终端 10的通信， 即第二终端 20 退出通信模式。
应当理解的是，第二终端 20在切换第二终端 20中驱动通道 /感应通道之后， 在第二终端 20和第一终端 10建立通信后， 即在两个终端互相通信过程中， 第 二终端 20在接收 /发送通信信号时始终保持切换后通道的配置模式。 由此， 可 以保证第二终端 20和第一终端 10之间的电路特性始终保持一致， 保证第二终 端 20和第一终端 10之间通信的正常。
此外， 除了上述实施例中的情况之外， 第二终端 20还可为通信的发起端， 第一终端 10为通信的随从端， 即第二终端 20作为通信的发起者， 第一终端 10 为通信的随从者。 此时， 在第二终端 20接近第一终端 10之后， 第二终端 20 从其他工作状态转入通信状态， 即第二终端 20进入通信模式后为发送状态。然 后第二终端 20初始化其自身的设置， 之后在第二终端 20处于发送状态时， 由 第一终端 10检测第一终端 10与第二终端 20之间的耦合电容值是否小于预设值。 第二终端 20在发送完信号之后， 第二终端 20切换其自身的状态， 从发送状态 进入接收状态。此时，第二终端 20开始检测第一终端 10与第二终端 20之间的 耦合电容值是否小于预设值， 并在检测到第一终端 10与第二终端 20之间的耦 合电容值小于预设值时， 通过调整第二终端 20中驱动通道和 /或感应通道的连 接关系， 调整第二终端 20和第一终端 10之间的耦合电容值。 应当理解的是， 第二终端 20检测耦合电容值和调整耦合电容值的方式均和上述中使用的方法 相同， 此处不再复赘。
本发明实施例的近场通信系统， 在第一终端和第二终端之间进行通信的过 程中， 如果第二终端发现第二终端和第一终端之间的耦合电容值较小， 可通过 切换第二终端中驱动通道和 /或感应通道的电气连接关系， 由此可以在第二终端 与第一终端通信不成功时， 通过软件切换收发通道的方式， 避免通信信号出现 耦合差的情况，使得用户使用第二终端在任何角度均可以与第一终端正常通信， 提升了通信时的成功率和效率的同时， 减少了用户额外的操作， 提升了用户体 验。
为了实现上述实施例， 本发明还提出一种终端。
图 9是根据本发明一个实施例的终端的结构示意图。 如图 9所示， 终端包 括第一检测模块 210、 调整模块 220和建立模块 230。
具体地， 第一检测模块 210用于检测终端与其他终端之间的耦合电容值是 否小于预设值。
在本发明的实施例中， 终端和其它终端均可以是但不限制于手机、 笔记本 电脑、平板电脑、掌上电脑、 POS机等中的一种，且其它终端为通信的发起端， 终端为通信的随从端。 换言之， 其它终端是通信的发起者， 终端是通信的随从 者。 具体而言， 以其它终端和终端均为手机， 且其它终端和终端均具有触摸显 示屏为例说明一下本发明实施例的终端。
在终端接近其它终端之后， 终端进入近距离通信的通信模式， 然后终端初 始化其自身的设置， 例如， 选择其自身显示屏的驱动通道和感应通道、 切换与 该显示屏驱动通道和感应通道相连接的开关单元、 设置与该显示屏相连接的接 收单元等。 其中， 该显示屏可为触摸屏， 优选地可为电容式触摸屏。
然后， 第一检测模块 210检测终端与其它终端之间的耦合电容值是否小于 预设值。 具体而言， 在终端进入通信模式之后， 此时终端处于接收状态， 第一 检测模块 210在通信模式中可实时监听终端通过其显示屏感应到的其它终端发 送的通信信号。 其中， 第一检测模块 210可通过终端的例如显示屏中的部分驱 动通道和感应通道接收其它终端发送的通信信号或者向其它终端发送通信信号。 换言之，第一检测模块 210可以设置终端通过显示屏的整个屏幕接收 /发送通信 信号，或者第一检测模块 210设置终端通过其显示屏的一部分屏幕接收 /发送通 信信号， 由此，可以提高终端的信噪比，并且节约终端消耗的电量。也就是说， 第一检测模块 210可实时检测在预设的窗口时间内， 其它终端与第二终端之间 耦合电容值的大小是否小于预设值。
调整模块 220用于当检测终端与其他终端之间的耦合电容值小于预设值时， 调整终端中驱动通道和 /或感应通道的连接关系， 以调整终端和其他终端之间的 耦合电容值。
然后， 如果第一检测模块 210判断在预设的窗口时间内终端与其它终端之 间的耦合电容值小于预设值， 且判断终端与其它终端之间的通信信号为有效信 号， 则调整模块 220通过调整终端中驱动通道和 /或感应通道的连接关系， 调整 终端和其它终端之间的耦合电容值。 也就是说， 如果终端在预设的窗口时间内 没有接收到通信信号， 或者接收到的通信信号比较弱， 即终端和其它终端之间 的耦合电容值较小或者为零， 则进行对终端驱动通道和感应通道的切换， 以实 现终端另外一种分布的电器特性。 应当理解的是， 如果第一检测模块 210判断 在预设的窗口时间内终端与其它终端之间耦合电容值大于或者等于预设值， 则 建立模块 230可建立终端和其它终端之间的通信。
在本发明的实施例中，调整模块 220在调整终端中驱动通道和 /或感应通道 的连接关系时， 调整模块 220可将终端中例如显示屏或者通信模块等的至少一 个驱动通道和 /或感应通道切换至预设点。 其中， 预设点可为电源正极、 系统地 GND、 输入缓冲端或输出缓冲端等， 或者预设点还可为悬空， 即将驱动通道和 /或感应通道处于悬空状态。 例如， 如图 7所示， 如果 Υη为终端显示屏的驱 动通道， Xi Xm为终端显示屏的感应通道的话， 此时可以将显示屏的感应通道
Χ^ΠΧ2接到系统地 GND。然后第一检测模块 210重新检测终端与其它终端之间 的耦合电容值是否小于预设值， 如果检测到终端与其它终端之间的耦合电容值 大于或者等于预设值， 则建立模块 230建立终端与其它终端之间的通信。 如果 第一检测模块 210检测到终端与其它终端之间的耦合电容值仍然小于预设值， 则调整模块 220可继续将终端中驱动通道或者感应通道切换至预设点。 例如， 如图 8所示， 此时可以将显示屏的驱动通道 接到系统地 GND。然后第一检测 应当理解的是， 调整模块 220可任意切换终端中驱动通道或者感应通道， 切换的方式可以是随机的。 也就是说， 调整模块 220切换终端中哪些驱动通道 和 /或感应通道以及切换这些通道连接至哪个预设点均可以是由调整模块 220 随机选取的。 如果切换通道之后终端与其它终端之间的耦合电容值仍然小于预 设值， 说明终端接收到的通信信号仍然不够好， 有可能是切换通道的动作不够 大导致的。此时调整模块 220可再多切换一部分驱动通道和 /或感应通道。 切换 的驱动通道或者感应通道的方式可以任何组合的方式进行切换， 均应当在本发 明保护的范围之内， 为了避免冗余， 切换通道组合的方式在此处不进行详述。
此外， 应当理解的是， 本领域技术人员还可对上述的方式进行其他等同替 换和变化， 例如， 如果其它终端为手机， 终端为具有近距离通信模块的笔记本 电脑， 或者终端为具有电容式触摸板的笔记本等， 第一检测模块 210亦可通过 上述的方式检测终端和其它终端之间的耦合电容值， 并通过调整模块 220切换 其它终端中近距离通信模块或者触摸板中的驱动通道或者感应通道实现增大终 端和其它终端之间的耦合电容值， 这些均应包含在发明的保护范围内。
建立模块 230用于在检测终端与其他终端之间的耦合电容值大于或等于预 设值时， 建立终端和其他终端之间的通信。
具体地， 在第一检测模块 210检测到终端与其它终端之间的耦合电容值大 于或者等于预设值， 且第一检测模块 210判断终端接收到的通信信号是其它终 端发起的信号之后， 终端可由接收模式进入至发送模式， 发送响应信号至其它 终端。 建立模块 230建立终端与其它终端的通信连接， 然后在处理完相关的通 信之后， 建立模块 230结束与其它终端的通信， 即终端退出通信模式。
应当理解的是， 调整模块 220在切换终端中驱动通道 /感应通道之后， 在建 立模块 230建立终端和其它终端的通信后， 即在两个终端互相通信过程中， 调 整模块 220在接收 /发送通信信号时始终保持终端处于切换后通道的配置模式。 由此， 可以保证终端和其它终端之间的电路特性始终保持一致， 保证终端和终 端之间通信的正常。
此外， 除了上述实施例中的情况之外， 终端还可为通信的发起端， 其它终 端为通信的随从端， 即终端作为通信的发起者， 其它终端为通信的随从者。 此 时， 在终端接近其它终端之后， 终端从其他工作状态转入通信状态， 即终端进 入通信模式后为发送状态。 然后终端初始化其自身的设置， 之后在终端处于发 送状态时，由其它终端检测其它终端与终端之间的耦合电容值是否小于预设值。 终端在发送完信号之后， 终端切换其自身的状态， 从发送状态进入接收状态。 此时， 终端开始检测终端与其它终端之间的耦合电容值是否小于预设值， 并在 检测到终端与其它终端之间的耦合电容值小于预设值时， 通过调整终端中驱动 通道和 /或感应通道的连接关系， 调整终端和其它终端之间的耦合电容值。 应当 理解的是， 终端检测耦合电容值和调整耦合电容值的方式均和上述中使用的方 法相同， 此处不再复赘。
本发明实施例的终端， 在终端和其它终端之间进行通信的过程中， 如果终 端发现终端和其它终端之间的耦合电容值较小，可通过切换终端中驱动通道和 / 或感应通道的电气连接关系， 由此可以在终端与其它终端通信不成功时， 通过 软件切换收发通道的方式， 避免通信信号出现耦合差的情况， 使得用户使用终 端在任何角度均可以与其它终端正常通信， 提升了通信时的成功率和效率的同 时， 减少了用户额外的操作， 提升了用户体验。
图 10是根据本发明一个具体实施例的终端的结构示意图。 如图 10所示， 终端包括第一检测模块 210、 调整模块 220、 建立模块 230、 第二检测模块 240 和控制模块 250。
具体地， 第二检测模块 240用于检测终端与其它终端建立通信的用时是否 大于预设阈值。
控制模块 250用于在检测终端与其它终端建立通信的用时大于预设阈值时， 控制终端退出通信模式。
具体而言， 在第一检测模块 210判断在预设的窗口时间内终端与其它终端 之间耦合电容值小于预设值之后， 第二检测模块 240还可检测终端进入通信模 式后请求建立与其它终端的通信所用的时间是否大于预设阈值， 并在第二检测 模块 24检测到建立通信所用的的时间大于预设阈值时，控制模块 250控制终端 退出通信模式。 换言之， 如果终端判断建立通信流程花费的总时间超过了预设 阈值， 则终端可直接结束和其它终端的通信。
本发明实施例的终端， 通过检测终端和其它终端之间建立连接的用时是否 超过预设阈值， 从而在超过预设阈值时推出通信模式。 由此， 可以进一歩节省 终端的电量。
为了实现上述实施例， 本发明还提出一种近场通信的方法。 下面结合本发明第二方面实施例的终端说明一下本发明实施例的近场通信 的方法。 具体地可参考本发明第二方面实施例的终端中的内容。
图 11是根据本发明一个实施例的近场通信的方法的流程图。如图 11所示， 近场通信的方法包括以下歩骤。
5101 , 当检测终端与其它终端之间的耦合电容值小于预设值时， 调整终端 的中驱动通道和 /或显示通道的连接关系， 以调整终端和其它终端之间的耦合电 容值。
在本发明的实施例中， 当终端接近其它终端时， 终端进入通信模式， 并在 通信模式中检测其它终端与终端之间的耦合电容值是否小于预设值。
在本发明的实施例中， 终端的部分驱动通道和感应通道接收其它终端发送 的信号或者向其它终端发送信号。
在本发明的实施例中， 检测终端与其它终端建立通信的用时是否大于预设 阈值， 并在检测终端与其它终端建立通信的用时大于预设阈值时， 控制终端退 出通信模式。
在本发明的实施例中，将终端中至少一个驱动通道和 /或感应通道切换至预 设点。 其中， 预设点为电源正极、 系统地、 输入缓冲端或输出缓冲端。
5102, 在检测终端与其它终端之间的耦合电容值大于或等于预设值时， 建 立终端和其它终端之间的通信。
本发明实施例的近场通信方法，在终端和其它终端之间进行通信的过程中， 如果终端发现终端和其它终端之间的耦合电容值较小， 可通过切换终端中驱动 通道和 /或感应通道的电气连接关系， 由此可以在终端与其它终端通信不成功时， 通过软件切换收发通道的方式， 避免通信信号出现耦合差的情况， 使得用户使 用终端在任何角度均可以与其它终端正常通信， 提升了通信时的成功率和效率 的同时， 减少了用户额外的操作， 提升了用户体验。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。 在上述实施方式中， 多个歩骤或方法可以用存储在存储器中且由合适的指令执 行系统执行的软件或固件来实现。 例如， 如果用硬件来实现， 和在另一实施方 式中一样， 可用本领域公知的下列技术中的任一项或他们的组合来实现： 具有 用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路， 具有合适的组合 逻辑门电路的专用集成电路，可编程门阵列（PGA) ,现场可编程门阵列（FPGA) 在本说明书的描述中， 参考术语 "一个实施例" 、 "一些实施例" 、 "示 例" 、 "具体示例" 、 或 "一些示例"等的描述意指结合该实施例或示例描述 的具体特征、 结构、 材料或者特点包含于本发明的至少一个实施例或示例中。 在本说明书中， 对上述术语的示意性表述不一定指的是相同的实施例或示例。 而且， 描述的具体特征、 结构、 材料或者特点可以在任何的一个或多个实施例 或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解： 在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、 替换和变型， 本发明的范围由权利要求及其等同物限定。 工业实用性
本发明实施例的近场通信系统、 方法和终端， 在第一终端和第二终端之间 进行通信的过程中， 如果第二终端发现第二终端和第一终端之间的耦合电容值 较小， 可通过切换第二终端中驱动通道和 /或感应通道的电气连接关系， 由此可 以在第二终端与第一终端通信不成功时， 通过软件切换收发通道的方式， 避免 通信信号出现耦合差的情况， 使得用户使用第二终端在任何角度均可以与第一 终端正常通信，提升了通信时的成功率和效率的同时，减少了用户额外的操作， 提升了用户体验。

Claims

权利要求书
1、 一种近场通信系统， 包括： 第一终端；
第二终端， 用于当检测所述第一终端与所述第二终端之间的耦合电容值小 于预设值时， 调整所述第二终端中驱动通道和 /或感应通道的连接关系， 以调整 所述第二终端和所述第一终端之间的所述耦合电容值， 并在检测所述第一终端 与所述第二终端之间所述耦合电容值大于或等于所述预设值时， 建立所述第二 终端和所述第一终端之间的通信。
2、如权利要求 1所述的近场通信系统， 其中， 所述第二终端将所述第二终 端的至少一个驱动通道和 /或感应通道切换至预设点。
3、 如权利要求 2所述的近场通信系统， 其中， 所述预设点为电源正极、 系 统地、 输入缓冲端或输出缓冲端。
4、如权利要求 3所述的近场通信系统， 其中， 所述第二终端通过所述第二 终端的部分驱动通道和感应通道接收第一终端发送的信号或者向所述第一终端 发送信号。
5、如权利要求 4所述的近场通信系统， 其中， 当所述第二终端接近所述第 一终端时， 所述第二终端进入通信模式， 并在所述通信模式中检测所述第一终 端与所述第二终端之间的耦合电容值是否小于预设值。
6、如权利要求 5所述的近场通信系统， 其中， 所述第二终端检测与所述第 一终端建立通信的用时是否大于预设阈值， 并在所述建立通信的用时大于预设 阈值时， 退出所述通信模式。
7、 一种终端， 包括：
第一检测模块， 用于检测所述终端与其他终端之间的耦合电容值是否小于 预设值；
调整模块， 用于当检测所述终端与所述其他终端之间的耦合电容值小于所 述预设值时， 调整所述终端中驱动通道和 /或感应通道的连接关系， 以调整所述 终端和所述其他终端之间的所述耦合电容值； 以及
建立模块， 用于在检测所述终端与所述其他终端之间的所述耦合电容值大 于或等于所述预设值时， 建立所述终端和所述其他终端之间的通信。
8、 如权利要求 7所述的终端， 其中， 所述调整模块具体用于：
将所述终端的至少一个驱动通道和 /或感应通道切换至预设点。
9、 如权利要求 8所述的终端， 其中， 所述预设点为电源正极、 系统地、 输 入缓冲端或输出缓冲端。
10、 如权利要求 9所述的终端， 其中， 所述终端的部分驱动通道和感应通 道接收所述其它终端发送的信号或者向所述其它终端发送信号。
11、 如权利要求 10所述的终端， 其中， 当所述终端接近所述其它终端时， 所述终端进入通信模式， 并在所述通信模式中检测所述其它终端与所述终端之 间的耦合电容值是否小于预设值。
12、 如权利要求 11所述的终端， 其中， 还包括：
第二检测模块， 用于检测所述终端与所述其它终端建立通信的用时是否大 于预设阈值； 以及
控制模块， 用于在检测所述终端与所述其它终端建立通信的用时大于预设 阈值时， 控制所述终端退出所述通信模式。
13、 一种近场通信的方法， 包括以下歩骤：
当检测终端与其它终端之间的耦合电容值小于预设值时， 调整所述终端的 中驱动通道和 /或显示通道的连接关系， 以调整所述终端和所述其它终端之间的 耦合电容值； 以及
在检测所述终端与所述其它终端之间的所述耦合电容值大于或等于所述预 设值时， 建立所述终端和所述其它终端之间的通信。
14、如权利要求 13所述的近场通信的方法， 其中， 将所述终端的至少一个 驱动通道和 /或感应通道切换至预设点。
15、如权利要求 14所述的近场通信的方法，其中，所述预设点为电源正极、 系统地、 输入缓冲端或输出缓冲端。
16、如权利要求 15所述的近场通信的方法， 其中， 所述终端的部分驱动通 道和感应通道接收所述其它终端发送的信号或者向所述其它终端发送信号。
17、如权利要求 16所述的近场通信的方法， 其中， 当所述终端接近所述其 它终端时， 所述终端进入通信模式， 并在所述通信模式中检测所述其它终端与 所述终端之间的耦合电容值是否小于预设值。
18、如权利要求 17所述的近场通信的方法， 其中， 检测所述终端与所述其 它终端建立通信的用时是否大于预设阈值， 并在检测所述终端与所述其它终端 建立通信的用时大于预设阈值时， 控制所述终端退出所述通信模式。
PCT/CN2014/084435 2014-01-24 2014-08-14 近场通信系统、方法和终端 Ceased WO2015109823A1 (zh)

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