WO2017016131A1 - 基于动态口令和usbkey的控制系统及其控制方法 - Google Patents

基于动态口令和usbkey的控制系统及其控制方法 Download PDF

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Publication number
WO2017016131A1
WO2017016131A1 PCT/CN2015/096843 CN2015096843W WO2017016131A1 WO 2017016131 A1 WO2017016131 A1 WO 2017016131A1 CN 2015096843 W CN2015096843 W CN 2015096843W WO 2017016131 A1 WO2017016131 A1 WO 2017016131A1
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WO
WIPO (PCT)
Prior art keywords
control chip
dynamic password
usb
usb interface
resistor
Prior art date
Application number
PCT/CN2015/096843
Other languages
English (en)
French (fr)
Inventor
陈柳章
Original Assignee
深圳市文鼎创数据科技有限公司
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 深圳市文鼎创数据科技有限公司 filed Critical 深圳市文鼎创数据科技有限公司
Priority to US15/747,989 priority Critical patent/US10708057B2/en
Priority to DE112015006741.8T priority patent/DE112015006741T5/de
Publication of WO2017016131A1 publication Critical patent/WO2017016131A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/81—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the present invention relates to the field of data transaction technologies, and in particular, to a control system based on a dynamic password and a USBKEY and a control method thereof.
  • OTP One-time Password
  • dynamic password also known as dynamic password. It is based on a special algorithm to generate a random number combination of unpredictable and random times every 60 seconds. Each password can only be used once, OTP from There are three forms of technology, day-to-day synchronization, event synchronization, and challenge/response.
  • the challenge/response OTP is commonly used for online business.
  • the challenge code sent by the server is outputted on the website/response.
  • the challenge code is input on the dynamic token, and a 6/8-bit random number is generated by the built-in algorithm.
  • the password is valid once, and the numeric keypad needs to be added due to the need to enter the challenge code.
  • an OTP control chip controls a display screen and a button, and when a USB interface is used, the USB host chip communicates with the OTP chip through an additional communication port.
  • the content to be displayed is transmitted to the OTP control chip through the display screen, and the button information is transmitted to the USB host control chip through the OTP control chip.
  • the OTP control chip After using the USB mode, the OTP control chip communicates with the USB host chip.
  • the OTP control chip needs to work at a higher speed.
  • there are two power supply modes one using the OTP control chip battery to supply power, so that in the USB In the mode, the battery power of the OTP control chip is consumed.
  • the battery capacity needs to be increased, the battery cost is increased, and the device is connected to the USB interface once long.
  • the battery may be exhausted; the other way is to automatically switch to the USB interface in USB mode.
  • the unstable voltage of the USB interface may cause the OTP control chip to reset, thus making The OTP function is invalid.
  • the OTP control chip will be started frequently. When the communication error occurs, the OTP control chip may work abnormally, and the OTP mode cannot be used. If the OTP chip works abnormally, the USB mode may also be used. can not work.
  • An object of the present invention is to provide a control system based on a dynamic password and a USBKEY and a control method thereof, which are directed to solving the problem of using a USB mode in the prior art and switching to power supply through a USB interface. Unstable causes the OTP control chip to lose pre-set content and the need to increase battery capacity.
  • the present invention is implemented in this way.
  • the first aspect provides a control system based on a dynamic password and a USBKEY, the control system including a dynamic password control chip, a USB control chip, a USB interface, a battery, and a detection circuit;
  • the input end of the detecting circuit is connected to the USB interface, and the first output end of the detecting circuit is connected to the state detecting end of the dynamic password control chip, and the detecting circuit detects that the USB interface is connected to the external device. Outputting a detection signal to the dynamic password control chip;
  • the dynamic password control chip enters a sleep state after receiving the detection signal
  • the battery is connected to a power input end of the dynamic password control chip, and the battery supplies power to the dynamic password control chip;
  • the input/output end of the USB control chip is connected to the USB interface, and the USB control chip communicates with the external device through the USB interface.
  • control system further includes a keyboard circuit
  • the keyboard circuit includes a plurality of buttons, a plurality of first signal lines, and a plurality of second signal lines, wherein the plurality of first signal lines are intersected with the plurality of second signal lines, and each button is connected to a first a signal line and a second signal line, wherein the plurality of first signal lines and the plurality of second signal lines are connected to a plurality of input ends of the dynamic password control chip, and the plurality of second signal lines At least one second signal line is connected to the input end of the U SB control chip;
  • the second output end of the detecting circuit is connected to a first signal line in the keyboard circuit, and the detecting circuit adjusts the power of the first signal line connected thereto after the USB interface is connected to the external device a flat state, wherein the USB control chip receives button information of the keyboard.
  • the dynamic password control chip is further configured to: when detecting that the USB interface is not connected to the external The device scans the button and enters the sleep state when it receives the shutdown signal or the scan exceeds the preset value.
  • the detecting circuit includes a first resistor, a second resistor, and a bypass tube;
  • the first end of the first resistor is connected to the power end of the USB interface, and the second end of the first resistor is connected to the first end of the second resistor and the control end of the bypass tube, a second end of the second resistor is commonly connected to an input end of the bypass tube, a control end of the bypass tube is a first output end of the detecting circuit, and an output end of the bypass tube is a second output of the detection circuit.
  • an isolation circuit is further disposed between the USB control chip and the keyboard circuit.
  • the isolation circuit includes a unidirectional conduction device and a pull-up resistor, an input end of the unidirectional conduction device is connected to the first end of the pull-up resistor, and an output terminal of the unidirectional conduction device constitutes an output of the isolation circuit
  • the first end of each pull-up resistor is connected to an input end of the USB control chip, and the second end of each pull-up resistor is connected to a DC power source.
  • control system further includes a display screen, and an output end of the dynamic password control chip is connected to an output end of the USB control chip An input end of the display screen;
  • the dynamic password control chip detects that the USB interface is connected to the external device, stops driving the display screen, and enters a sleep state;
  • the USB control chip of the USB control chip is connected to an external device, and controls the display screen.
  • each output end of the USB control chip is isolated from each input end of the display screen to which it is connected resistance.
  • a second aspect of the present invention provides a control method of a control system based on a dynamic password and a USBKEY, where the control method includes:
  • the detecting circuit detects that the USB interface is connected to the external device, and outputs a detection signal to the dynamic password control chip; [0023] the dynamic password control chip receives the detection signal and enters a sleep state;
  • the battery supplies power to the dynamic password control chip
  • the USB control chip communicates with the external device through the USB interface.
  • control method further includes the following steps:
  • the dynamic password control chip is further configured to scan a button when detecting that the USB interface is not connected to the external device, and enter a sleep state when receiving the shutdown signal or the scan time exceeds a preset value.
  • control method further includes the following steps:
  • the dynamic password control chip detects that the USB interface is connected to the external device, stops controlling the display screen, causes the USB control chip to drive the display screen, and enters a sleep state;
  • USB control chip the USB interface is connected to an external device, and controls the display screen.
  • the present invention provides a dynamic password and USBKEY based control system and a control method thereof.
  • the dynamic password control chip is powered by the battery, and when the detection circuit detects the USB After the interface is connected to the external device, the USB control chip starts to work, and the dynamic password control chip automatically enters the sleep state.
  • the dynamic password control chip is still powered by the battery. Since the dynamic password control chip enters the low power state, the battery power can be saved.
  • the dynamic password control chip and the USB control chip do not interfere with each other, and the dynamic password control chip in the prior art can be switched to the USB power supply after the USB interface is connected to the USB device, so that the dynamic password control chip may lose the preset.
  • the defect of the content realizes the power supply independent of the dynamic password control chip and the USB control chip, and no communication is required between the USB control chip and the dynamic password control chip, which reduces the code amount and the debugging work.
  • FIG. 1 is a schematic structural diagram of a control system based on a dynamic password and a USBKEY according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a control system based on a dynamic password and a USBKEY according to another embodiment of the present invention
  • FIG. 3 is a circuit diagram of a keyboard circuit and an isolation detecting circuit in a control system based on a dynamic password and a USBKEY according to another embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a control system based on a dynamic password and a USBKEY according to another embodiment of the present invention.
  • FIG. 5 is a circuit diagram of a display screen in a control system based on a dynamic password and a USBKEY according to another embodiment of the present invention.
  • FIG. 6 is a flow chart of a control method based on a dynamic password and a USBKEY according to an embodiment of the present invention.
  • An embodiment of the present invention provides a control system based on a dynamic password and a USBKEY, as shown in FIG.
  • the control system includes a dynamic password control chip 101, a USB control chip 102, a USB interface 104, and a battery 1
  • the input end of the detecting circuit 105 is connected to the USB interface 104, and the first output end of the detecting circuit 105 is connected to the state detecting end of the dynamic password control chip 101, and the detecting circuit 105 detects that the USB interface 104 is connected to the external device, and the dynamic password is controlled.
  • the chip 101 outputs a detection signal.
  • the dynamic password control chip 101 receives the detection signal and enters a sleep state.
  • the battery 103 is connected to the power input end of the dynamic password control chip 101, and the battery 103 supplies power to the dynamic password control chip 101, and after the dynamic password control chip 101 enters the sleep state, the dynamic password control is reduced.
  • the power supply of the chip 101 is reduced.
  • the input/output terminal of the USB control chip 102 is connected to the USB interface 104, and the USB control chip 102 communicates with an external device through the USB interface 104.
  • the detecting circuit 105 when the dynamic password control chip 101 is in the working state, the dynamic password chip is powered by the battery 103, and when the detecting circuit 105 detects that the USB interface 104 is connected to the external device, the USB control chip After 102 starts working, the dynamic password control chip 101 automatically enters a sleep state, and the dynamic password control chip 101 is still powered by the battery 103. Since the dynamic password control chip 101 enters a low power consumption state, the power supply of the battery 103 can be saved, and the dynamic password is saved. The power supply of the control chip 101 and the USB control chip 102 does not interfere with each other.
  • the dynamic password control chip 101 may lose the preset.
  • the defect of the content realizes that the power supply of the dynamic password control chip 101 and the USB control chip 102 is independent, and communication between the USB control chip 102 and the dynamic password control chip 101 is not required, which reduces the amount of code and debugging work.
  • the control system further includes a keyboard circuit 106.
  • the keyboard circuit 106 includes a plurality of buttons and a plurality of first signal lines. And a plurality of second signal lines, the plurality of first signal lines and the plurality of second signal lines are arranged in a cross, each button is connected with a first signal line and a second signal line, and the plurality of first signal lines and the plurality of lines The two signal lines are connected to the plurality of input ends of the dynamic password control chip 101, and at least one of the plurality of second signal lines is connected to the input end of the USB control chip 102.
  • the second output end of the detecting circuit 105 is connected to a first signal line in the keyboard circuit 106, and the detecting circuit 105 is connected to the external device USB on the USB interface 104 to adjust the level state of the first signal line connected thereto.
  • the U SB control chip 102 is caused to receive key information of the keyboard.
  • the detecting circuit 105 includes a first resistor R1, a second resistor R2, and a bypass transistor; the first end of the first resistor R1 is connected to the power end of the USB interface 104, and the second end of the first resistor R1 is connected.
  • the first end of the second resistor R2 and the control end of the bypass tube, the second end of the second resistor R2 is commonly connected to the input end of the bypass tube, and the control end of the bypass tube is the first output end of the detecting circuit 105,
  • the output of the bypass transistor is the second output of the detection circuit 105.
  • the bypass transistor can be a FET, a triode, and an IGBT or the like.
  • the bypass transistor is a field effect transistor Q1
  • the drain, the source and the gate of the field effect transistor Q1 are respectively an output end, an input end and a control end of the bypass tube.
  • an isolation circuit 108 is further disposed between the USB control chip 102 and the second signal line connected thereto.
  • the isolation circuit 108 includes a unidirectional conduction device and a pull-up resistor, and the input end of the unidirectional conduction device is connected.
  • the first end of the pull-up resistor, the output end of the single-conducting device constitutes an output end of the isolation circuit, and the first end of each pull-up resistor is connected to an input end of the USB control chip 102, and the second end of each pull-up resistor Connect the DC power supply to the terminal.
  • the unidirectional conduction device is a device having a unidirectional conduction such as a diode.
  • the unidirectional conduction device is a diode.
  • the keyboard circuit 106 includes 16 buttons, including four first signal lines and four second signal lines arranged in a cross arrangement, wherein the pins of the first signal line are OTP_LINE0, OTP_LINE1, OTP_LI NE2, and OTP_LINE3, the pins of the second signal line are OTP_ROW0, OTP_ROWl, OTP_R OW2, and OTP_ROW3, and the first signal pin and the second signal pin are connected to the OTP array scan bow
  • the circuit 108 is connected to the USB control chip 102, the pin OTP_ROW0 of the second signal line is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the first end of the third resistor R3, and the second end of the third resistor R3 is connected to the USB control.
  • the second signal line of the bow I foot OTP_ROW2 is connected to the cathode of the diode D3, the anode of the diode D3 is connected to the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is connected to the USB
  • the cancel key USB_CA NCEL of the chip 102 the pin OTP_ROW3 of the second signal line is connected to the cathode of the diode D4, the anode of the diode D4 is connected to the first end of the sixth resistor R6, and the second end of the sixth resistor R6 is connected to the USB control chip 102.
  • the confirmation button USB_ENTER, USB_5V in the detection circuit 105 is the power signal connected to the USB interface 104, the FET Q1 is the NMOS tube, the USB_DET is connected to the OTP control chip to detect the USB interface 104 state bow
  • the chip 102 is in a power-off state. Since the diodes D1 to D4 do not allow current to flow to the USB control chip 102, the gate of the FET Q1 is at a low level, so current does not flow to the FET Q1. Therefore, the OTP control chip can implement the array.
  • USB_5V When USB ⁇ is connected, USB_5V is in a high state, the OTP control chip detects that USB_DET is high, exits OTP mode, enters Hugh Sleep mode, the gate of FET Q1 is high level, the current will flow to the S end of Q1, which is equivalent to the ⁇ OTP_ LINE3 pin is grounded, then the four button pins of USB_UP, USB_DOWN, USB_CANCEL, USB_ENT ER pass The pull-up input of the isolation resistors R3 to R6, when any of the keys S11 to S14 is pressed, the level can be detected from high to low by the buttons USB_UP, USB_DOWN, USB_CANCEL, USB_ENTER, thereby completing the button detection.
  • the dynamic password control chip 101 is further configured to scan the button when it is detected that the USB interface 104 is not connected to the external device, and enter a sleep state when receiving the shutdown signal or the scanning time exceeds a preset value.
  • a third embodiment of the present invention provides a control system based on a dynamic password and a USBKEY.
  • the control system further includes a display 107, an output of the dynamic password control chip 101, and a USB control chip.
  • the output of 102 is connected to the input of display 107;
  • the dynamic password control chip 101 stops controlling the display screen after detecting that the USB interface 104 is connected to the external device.
  • USB control chip 102 USB interface 104 is connected to the external device ⁇ to control the display 107.
  • an isolation resistor is provided between each output terminal of the USB control chip 102 and each input terminal of the display screen 107 connected thereto.
  • the OTP chip is connected to the communication pin of the display 107, and the USB main control chip is connected to the data pin of the display 107 through a series resistor.
  • the OTP chip is displayed by the OTP_LCD_VD D.
  • the screen 107 is powered, the USB main control chip is powered off, and the connection pin of the OTP chip and the display 107 is equivalent to adding a pull-down resistor, and can still communicate normally with the display 107.
  • the OTP chip passes the USB_DET.
  • the pin detects the USB access, sets the pin of the control display 107 to the input state, and then goes to sleep, waiting for the OTP mode to be restarted next time.
  • Another embodiment of the present invention provides a control method of a dynamic password and USBKEY based control system. As shown in FIG. 6, the control method includes:
  • Step S101 The detecting circuit 105 detects that the USB interface 104 is connected to the external device, and outputs a detection signal to the dynamic password control chip 101.
  • Step S102 The dynamic password control chip 101 receives the detection signal and enters a sleep state
  • Step S103 The battery 103 supplies power to the dynamic password control chip 101, and enters the dynamic password control chip 101. After entering the sleep state, the power supply to the dynamic password control chip 101 is reduced;
  • Step S104 The USB control chip 102 performs interactive communication with an external device through the USB interface 104.
  • the dynamic password control chip 101 is further configured to: when detecting that the USB interface 104 is not connected to an external device, scan the button, and enter a sleep state when receiving the shutdown signal or the scan time exceeds a preset value .
  • the dynamic password control chip 101 stops driving the display 107 to cause the USB control chip 102 to control the display 107 and enter a sleep state;
  • the USB control chip controls the display screen after the USB interface is connected to an external device.
  • the present invention provides a dynamic password and USBKEY based control system and a control method thereof.
  • the dynamic password control chip is powered by the battery, and when the detection circuit detects the USB After the interface is connected to the external device, the USB control chip starts to work, and the dynamic password control chip automatically enters the sleep state.
  • the dynamic password control chip is still powered by the battery. Since the dynamic password control chip enters the low power state, the battery power can be saved.
  • the power supply of the dynamic password control chip and the USB control chip do not interfere with each other, and the dynamic password control chip in the prior art is prevented from being connected to the external device after the USB interface is connected to the USB device, so that the dynamic password control chip may lose the preset content.
  • the defect realizes the power supply independent of the dynamic password control chip and the USB control chip, and no communication is required between the U SB control chip and the dynamic password control chip, which reduces the code amount and debugging work.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and the actual implementation may have another The manner of division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the unit described as a separate component may or may not be physically distributed, and the component displayed as a unit may or may not be a physical unit, that is, may be located in one place, or may be distributed to multiple On the network unit. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read only memory (ROM, Read-Only)
  • RAM random access memory
  • disk disk or optical disk, and other media that can store program code.

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  • Computer Security & Cryptography (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

涉及数据交易技术领域，一种基于动态口令和USBKEY的控制系统及其控制方法，控制系统包括动态口令控制芯片(101)、USB控制芯片(102)、USB接口(104)、电池(103)以及检测电路(105)；检测电路(105)检测到USB接口(104)连接外部设备时，向动态口令控制芯片(101)输出检测信号；动态口令控制芯片(101)接收到检测信号时进入休眠状态；电池(103)为动态口令控制芯片(101)供电，并在动态口令控制芯片(101)进入休眠状态时，降低对动态口令控制芯片(101)的供电电量，当USB控制芯片(102)开始工作，动态口令控制芯片(101)依然由电池供电，由于动态口令控制芯片(101)进入低功耗状态，并且动态口令控制芯片(101)和USB控制芯片(102)的供电相互不干扰，避免切换至USB供电导致动态口令控制芯片(101)可能丢失预置的内容的缺陷。

Description

发明名称：基于动态口令和 USBKEY的控制系统及其控制方法 技术领域
[0001] 本发明涉及数据交易技术领域， 尤其涉及一种基于动态口令和 USBKEY的控制 系统及其控制方法。
背景技术
[0002] OTP全称是 One-time Password, 也称动态口令， 是根据专门的算法每隔 60秒生 成一个与吋间相关的、 不可预测的随机数字组合， 每个口令只能使用一次， OTP 从技术上来分有三种形式， 吋间同步、 事件同步以及挑战 /应答，
挑战 /应答型 OTP常用于的网上业务， 在网站 /应答上输出服务端下发的挑战码， 在动态令牌上输入该挑战码， 通过内置的算法上生成一个 6/8位的随机数字， 口 令一次有效， 由于需要输入挑战码， 需要增加数字键盘。
[0003] 现有技术中在同吋具有 OTP功能和 USBKEY功能的复合设备上， 通过 OTP控制 芯片控制显示屏和按键， 当使用 USB接口吋， USB主控芯片通过额外的通讯端口 与 OTP芯片通讯， 把要显示的内容传送给 OTP控制芯片通过显示屏进行显示， 按 键信息通过 OTP控制芯片传入 USB主控芯片。 在使用 USB模式吋， OTP控制芯片 与 USB主控芯片通讯， OTP控制芯片需要工作在较高的速度下， 现有技术中有两 种供电方式， 一种使用 OTP控制芯片电池供电， 这样在 USB模式下会消耗 OTP控 制芯片的电池电量， 为了保证使用 OTP模式吋有足够的使用吋间， 就需要增加电 池的容量， 增加了电池成本， 而且一旦长吋间把设备连接在 USB接口的状态下， 电池可能会耗尽； 另一种方式是在 USB模式吋自动切换到 USB接口供电， 这种方 式除了需要复杂的切换电路外， USB接口电压的不稳定可能会引起 OTP控制芯片 复位， 从而使 OTP功能失效。 这两种方式在使用 USB接口功能吋， 均会频繁启动 OTP控制芯片， 当通讯出错吋， 可能会引起 OTP控制芯片的工作异常， 导致 OTP 模式无法使用， 如果 OTP芯片工作异常， USB模式也可能无法工作。 综上所述， 现有技术中存在使用 USB模式并切换至通过 USB接口供电吋， 由于 USB接口供电 的不稳定使 OTP控制芯片可能丢失预置的内容以及需要增加电池容量的问题。 技术问题
[0004] 本发明的目的在于提供一种基于动态口令和 USBKEY的控制系统及其控制方法 ， 旨在解决针对现有技术中存在使用 USB模式并切换至通过 USB接口供电吋， 由 于 USB接口供电的不稳定使 OTP控制芯片可能丢失预置的内容以及需要增加电池 容量的问题。
问题的解决方案
技术解决方案
[0005] 本发明是这样实现的， 第一方面提供一种基于动态口令和 USBKEY的控制系统 ， 所述控制系统包括动态口令控制芯片、 USB控制芯片、 USB接口、 电池以及检 测电路；
[0006] 所述检测电路的输入端连接所述 USB接口， 所述检测电路的第一输出端连接所 述动态口令控制芯片的状态检测端， 所述检测电路在检测到 USB接口连接外部设 备吋， 向所述动态口令控制芯片输出检测信号；
[0007] 所述动态口令控制芯片在接收到所述检测信号吋进入休眠状态；
[0008] 所述电池连接所述动态口令控制芯片的电源输入端， 所述电池为所述动态口令 控制芯片供电；
[0009] 所述 USB控制芯片的输入 /输出端连接所述 USB接口， 所述 USB控制芯片通过所 述 USB接口与所述外部设备进行交互通信。
[0010] 结合第一方面， 在第一方面的第一种可能的实现方式中， 所述控制系统还包括 键盘电路；
[0011] 所述键盘电路包括多个按键、 多条第一信号线以及多条第二信号线， 所述多条 第一信号线与多条第二信号线交叉排列， 每一按键连接一条第一信号线和一条 第二信号线， 所述多条第一信号线和所述多条第二信号线连接所述动态口令控 制芯片的多个输入端， 所述多条第二信号线中的至少一条第二信号线连接所述 U SB控制芯片的输入端；
[0012] 所述检测电路的第二输出端连接所述键盘电路中的一条第一信号线， 所述检测 电路在所述 USB接口连接外部设备吋， 调整其所连接的第一信号线的电平状态， 使所述 USB控制芯片接收所述键盘的按键信息。 [0013] 结合第一方面的第一种可能的实现方式中， 在第一方面的第二种可能的实现方 式中， 所述动态口令控制芯片还用于当检测到所述 USB接口未连接外部设备吋对 按键进行扫描， 并当接收到关机信号或者扫描吋间超过预设值吋， 进入休眠状 态。
[0014] 结合第一方面， 在第一方面的第三种可能的实现方式中， 所述检测电路包括第 一电阻、 第二电阻以及幵关管；
[0015] 所述第一电阻的第一端连接所述 USB接口的电源端， 所述第一电阻的第二端连 接所述第二电阻的第一端和所述幵关管的控制端， 所述第二电阻的第二端与所 述幵关管的输入端共地连接， 所述幵关管的控制端为所述检测电路的第一输出 端， 所述幵关管的输出端为所述检测电路的第二输出端。
[0016] 结合第一方面的第二种可能的实现方式中， 在第一方面的第四种可能的实现方 式中， 所述 USB控制芯片与所述键盘电路之间还设有隔离电路， 所述隔离电路包 括单向导通器件和上拉电阻， 所述单向导通器件的输入端连接所述上拉电阻的 第一端， 所述单向导通器件的输出端构成所述隔离电路的一个输出端， 每个上 拉电阻的第一端连接所述 USB控制芯片对应的一个输入端， 所述每个上拉电阻的 第二端连接直流电源。
[0017] 结合第一方面， 在第一方面的第五种可能的实现方式中， 所述控制系统还包括 显示屏， 所述动态口令控制芯片的输出端和所述 USB控制芯片的输出端连接所述 显示屏的输入端；
[0018] 所述动态口令控制芯片在检测到所述 USB接口连接外部设备吋， 停止驱动所述 显示屏并进入休眠状态；
[0019] 所述 USB控制芯片所述 USB接口连接外部设备吋对所述显示屏进行控制。
[0020] 结合第一方面， 在第一方面的第六种可能的实现方式中， 所述 USB控制芯片的 每个输出端与其所连接的所述显示屏的每个输入端之间设有隔离电阻。
[0021] 本发明第二方面提供一种基于动态口令和 USBKEY的控制系统的控制方法， 所 述控制方法包括：
[0022] 所述检测电路检测到 USB接口连接外部设备吋， 向所述动态口令控制芯片输出 检测信号； [0023] 所述动态口令控制芯片接收到所述检测信号吋进入休眠状态；
[0024] 所述电池为所述动态口令控制芯片供电；
[0025] 所述 USB控制芯片通过所述 USB接口与所述外部设备进行交互通信。
[0026] 结合第二方面， 在第二方面的第一种可能的实现方式中， 所述控制方法还包括 以下步骤：
[0027] 所述动态口令控制芯片还用于当检测到 USB接口未连接外部设备吋对按键进行 扫描， 并当接收到关机信号或者扫描吋间超过预设值吋， 进入休眠状态。
[0028] 结合第二方面， 在第二方面的第二种可能的实现方式中， 所述控制方法还包括 以下步骤：
[0029] 所述动态口令控制芯片在检测到 USB接口连接外部设备吋， 停止控制显示屏使 所述 USB控制芯片对显示屏进行驱动， 并进入休眠状态；
[0030] 所述 USB控制芯片所述 USB接口连接外部设备吋对所述显示屏进行控制。
发明的有益效果
有益效果
[0031] 本发明提供的一种基于动态口令和 USBKEY的控制系统及其控制方法， 通过设 置检测电路， 当动态口令控制芯片处于工作状态吋， 动态口令芯片由电池供电 ， 当检测电路检测到 USB接口接入外部设备吋， USB控制芯片幵始工作， 动态口 令控制芯片自动进入休眠状态， 动态口令控制芯片依然由电池进行供电,由于动 态口令控制芯片进入低功耗状态， 可以节约电池的供电电量， 并且动态口令控 制芯片和 USB控制芯片的供电相互不干扰， 避免可现有技术中动态口令控制芯片 在 USB接口接入外部设备吋， 会切换至 USB供电导致动态口令控制芯片可能丢失 预置的内容的缺陷， 实现了动态口令控制芯片和 USB控制芯片的供电独立， 并且 USB控制芯片与动态口令控制芯片之间不需要通讯， 减少了代码量和调试工作。 对附图的简要说明
附图说明
[0032] 为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例或现有技术描 述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是 本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动性 的前提下， 还可以根据这些附图获得其他的附图。
[0033] 图 1是本发明一种实施例提供的一种基于动态口令和 USBKEY的控制系统的结 构示意图；
[0034] 图 2是本发明另一种实施例提供的一种基于动态口令和 USBKEY的控制系统的 结构示意图；
[0035] 图 3是本发明另一种实施例提供的一种基于动态口令和 USBKEY的控制系统中 的键盘电路和隔离检测电路的电路图；
[0036] 图 4是本发明另一种实施例提供的一种基于动态口令和 USBKEY的控制系统的 结构示意图；
[0037] 图 5是本发明另一种实施例提供的一种基于动态口令和 USBKEY的控制系统中 的显示屏电路图；
[0038] 图 6是本发明一种实施例提供的一种基于动态口令和 USBKEY的控制方法的流 程图。
本发明的实施方式
[0039] 为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实施例 ， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用 以解释本发明， 并不用于限定本发明。
[0040] 为了说明本发明的技术方案， 下面通过具体实施例来进行说明。
[0041] 本发明一种实施例提供一种基于动态口令和 USBKEY的控制系统， 如图 1所示
， 控制系统包括动态口令控制芯片 101、 USB控制芯片 102、 USB接口 104、 电池 1
03以及检测电路 105。
[0042] 检测电路 105的输入端连接 USB接口 104， 检测电路 105的第一输出端连接动态 口令控制芯片 101的状态检测端， 检测电路 105检测到 USB接口 104连接外部设备 吋， 向动态口令控制芯片 101输出检测信号。
[0043] 动态口令控制芯片 101接收到检测信号吋进入休眠状态。
[0044] 电池 103连接动态口令控制芯片 101的电源输入端， 电池 103为动态口令控制芯 片 101供电， 并在动态口令控制芯片 101进入休眠状态吋， 降低对动态口令控制 芯片 101的供电电量。
[0045] USB控制芯片 102的输入 /输出端连接 USB接口 104， USB控制芯片 102通过 USB 接口 104与外部设备进行交互通信。
[0046] 本发明实施例通过设置检测电路 105， 当动态口令控制芯片 101处于工作状态吋 ， 动态口令芯片由电池 103供电， 当检测电路 105检测到 USB接口 104接入外部设 备吋， USB控制芯片 102幵始工作， 动态口令控制芯片 101自动进入休眠状态， 动 态口令控制芯片 101依然由电池 103进行供电,由于动态口令控制芯片 101进入低功 耗状态， 可以节约电池 103的供电电量， 并且动态口令控制芯片 101和 USB控制芯 片 102的供电相互不干扰， 避免现有技术中动态口令控制芯片 101在 USB接口 104 接入外部设备吋， 会切换至 USB供电导致动态口令控制芯片 101可能丢失预置的 内容的缺陷， 实现了动态口令控制芯片 101和 USB控制芯片 102的供电独立， 并且 USB控制芯片 102与动态口令控制芯片 101之间不需要通讯， 减少了代码量和调试 工作。
[0047] 本发明另一种实施例提供一种基于动态口令和 USBKEY的控制系统， 如图 2所 示， 控制系统还包括键盘电路 106， 键盘电路 106包括多个按键、 多条第一信号 线以及多条第二信号线， 多条第一信号线与多条第二信号线交叉排列， 每一按 键连接一条第一信号线和一条第二信号线， 多条第一信号线和多条第二信号线 连接动态口令控制芯片 101的多个输入端， 多条第二信号线中的至少一条第二信 号线连接 USB控制芯片 102的输入端。
[0048] 检测电路 105的第二输出端连接键盘电路 106中的一条第一信号线， 检测电路 10 5在 USB接口 104连接外部设备吋， 调整其所连接的第一信号线的电平状态， 使 U SB控制芯片 102接收键盘的按键信息。
[0049] 具体的， 检测电路 105包括第一电阻 Rl、 第二电阻 R2以及幵关管； 第一电阻 R1 的第一端连接 USB接口 104的电源端， 第一电阻 R1的第二端连接第二电阻 R2的第 一端和幵关管的控制端， 第二电阻 R2的第二端与幵关管的输入端共地连接， 幵 关管的控制端为检测电路 105的第一输出端， 幵关管的输出端为检测电路 105的 第二输出端。
[0050] 具体的， 幵关管可以为场效应管、 三极管以及 IGBT等幵关器件。 [0051] 优选的， 幵关管为场效应管 Ql， 场效应管 Q1的漏极、 源极以及栅极分别为幵 关管的输出端、 输入端以及控制端。
[0052] 可选的， USB控制芯片 102与其所连接的第二信号线之间还设有隔离电路 108， 隔离电路 108包括单向导通器件和上拉电阻， 单向导通器件的输入端连接上拉电 阻的第一端， 单向导通器件的输出端构成隔离电路的一个输出端， 每个上拉电 阻的第一端连接 USB控制芯片 102对应的一个输入端， 每个上拉电阻的第二端连 接直流电源。
[0053] 具体的， 单向导通器件为二极管等具有单向导通的器件。
[0054] 优选的， 单向导通器件为二极管。
[0055] 如图 3所示， 键盘电路 106包括 16个按键， 包括交叉排列的四条第一信号线和四 条第二信号线， 其中， 第一信号线的引脚为 OTP_LINE0、 OTP_LINEl、 OTP_LI NE2以及 OTP_LINE3， 第二信号线的引脚为 OTP_ROW0、 OTP_ROWl、 OTP_R OW2以及 OTP_ROW3， 第一信号引脚和第二信号引脚是连接 OTP的阵列扫描弓 | 脚， 第二信号线的引脚分别通过隔离电路 108与 USB控制芯片 102连接， 第二信号 线的引脚 OTP_ROW0连接二极管 D 1的阴极， 二极管 D 1的阳极连接第三电阻 R3的 第一端， 第三电阻 R3的第二端连接 USB控制芯片 102的上翻键 USB_UP， 第二信 号线的引脚 OTP_ROWl连接二极管 D2的阴极， 二极管 D2的阳极连接第四电阻 R4 的第一端， 第四电阻 R4的第二端连接 USB控制芯片 102的下翻键 USB_DOWN， 第二信号线的弓 I脚 OTP_ROW2连接二极管 D3的阴极， 二极管 D3的阳极连接第五 电阻 R5的第一端， 第五电阻 R5的第二端连接 USB控制芯片 102的取消键 USB_CA NCEL， 第二信号线的引脚 OTP_ROW3连接二极管 D4的阴极， 二极管 D4的阳极 连接第六电阻 R6的第一端， 第六电阻 R6的第二端连接 USB控制芯片 102的确认按 键 USB_ENTER， 检测电路 105中 USB_5V是连接 USB接口 104的电源信号， 场效 应管 Q1是 NMOS管， USB_DET连接 OTP控制芯片的检测 USB接口 104状态弓 |脚， 当使用 OTP模式吋， USB控制芯片 102处于断电状态， 由于二极管 D1至 D4不允许 电流流向 USB控制芯片 102， 场效应管 Q1的栅极为低电平， 因此电流不会流向场 效应管 Ql， 因此， OTP控制芯片可以实现阵列扫描； 当连接 USB吋， USB_5V为 高电平状态， OTP控制芯片检测到 USB_DET为高电平吋退出 OTP模式， 进入休 眠模式， 场效应管 Q1的栅极为高电平， 电流会流向 Q1的 S端， 相当于此吋 OTP_ LINE3引脚是接地的， 此吋 USB_UP、 USB_DOWN、 USB_CANCEL、 USB_ENT ER四个按键引脚通过隔离电阻 R3至 R6的上拉输入， 当幵关 S11至 S14任一按键按 下吋， 通过按键 USB_UP、 USB_DOWN、 USB_CANCEL、 USB_ENTER可以检 测到电平由高变低， 从而完成按键检测。
[0056] 进一步的， 动态口令控制芯片 101还用于当检测到 USB接口 104未连接外部设备 吋对按键进行扫描， 并当接收到关机信号或者扫描吋间超过预设值吋， 进入休 眠状态。
[0057] 本发明第三种实施例提供一种基于动态口令和 USBKEY的控制系统， 如图 4所 示， 控制系统还包括显示屏 107， 动态口令控制芯片 101的输出端和 USB控制芯片
102的输出端连接显示屏 107的输入端；
[0058] 动态口令控制芯片 101在检测到 USB接口 104连接外部设备吋， 停止控制显示屏
107并进入休眠状态； USB控制芯片 102USB接口 104连接外部设备吋对显示屏 107 进行控制。
[0059] 进一步的， USB控制芯片 102的每个输出端与其连接的显示屏 107的每个输入端 之间设有隔离电阻。
[0060] 如图 5所示， OTP芯片与显示屏 107的通讯引脚连接， USB主控芯片通过串联电 阻与显示屏 107数据引脚连接， 当处于 OTP模式吋， OTP芯片通过 OTP_LCD_VD D给显示屏 107供电， USB主控芯片为断电状态， OTP芯片的与显示屏 107的连接 引脚相当于增加了下拉电阻， 仍然能与显示屏 107正常通讯， 当处于 USB模式吋 ， OTP芯片通过 USB_DET引脚检测到 USB接入， 把控制显示屏 107的引脚设置为 输入状态， 然后进入休眠， 等待下次重新启动 OTP模式。
[0061] 本发明另一种实施例提供一种上述的基于动态口令和 USBKEY的控制系统的控 制方法， 如图 6所示， 控制方法包括：
[0062] 步骤 S101.检测电路 105检测到 USB接口 104连接外部设备吋， 向动态口令控制 芯片 101输出检测信号；
[0063] 步骤 S102.动态口令控制芯片 101接收到检测信号吋进入休眠状态；
[0064] 步骤 S103.电池 103为动态口令控制芯片 101供电， 并在动态口令控制芯片 101进 入休眠状态吋， 降低对动态口令控制芯片 101的供电电量；
[0065] 步骤 S104. USB控制芯片 102通过 USB接口 104与外部设备进行交互通信。
[0066] 可选的， 动态口令控制芯片 101还用于当检测到 USB接口 104未连接外部设备吋 对按键进行扫描， 并当接收到关机信号或者扫描吋间超过预设值吋， 进入休眠 状态。
[0067] 可选的， 动态口令控制芯片 101在检测到 USB接口 104连接外部设备吋， 停止驱 动显示屏 107使 USB控制芯片 102对显示屏 107进行控制， 并进入休眠状态；
[0068] 所述 USB控制芯片在所述 USB接口连接外部设备吋对所述显示屏进行控制。
[0069] 本发明提供的一种基于动态口令和 USBKEY的控制系统及其控制方法， 通过设 置检测电路， 当动态口令控制芯片处于工作状态吋， 动态口令芯片由电池供电 ， 当检测电路检测到 USB接口接入外部设备吋， USB控制芯片幵始工作， 动态口 令控制芯片自动进入休眠状态， 动态口令控制芯片依然由电池进行供电,由于动 态口令控制芯片进入低功耗状态， 可以节约电池的供电电量， 并且动态口令控 制芯片和 USB控制芯片的供电相互不干扰， 避免现有技术中动态口令控制芯片在 USB接口接入外部设备吋， 会切换至 USB供电导致动态口令控制芯片可能丢失预 置的内容的缺陷， 实现了动态口令控制芯片和 USB控制芯片的供电独立， 并且 U SB控制芯片与动态口令控制芯片之间不需要通讯， 减少了代码量和调试工作。
[0070] 本领域普通技术人员可以意识到， 结合本文中所公幵的实施例描述的各示例的 单元及算法步骤， 能够以电子硬件、 或者计算机软件和电子硬件的结合来实现 。 这些功能究竟以硬件还是软件方式来执行， 取决于技术方案的特定应用和设 计约束条件。 专业技术人员可以对每个特定的应用来使用不同方法来实现所描 述的功能， 但是这种实现不应认为超出本发明的范围。
[0071] 所属领域的技术人员可以清楚地了解到， 为描述的方便和简洁， 上述描述的系 统、 装置和单元的具体工作过程， 可以参考前述方法实施例中的对应过程， 在 此不再赘述。
[0072] 在本申请所提供的几个实施例中， 应该理解到， 所揭露的系统、 装置和方法， 可以通过其它的方式实现。 例如， 以上所描述的装置实施例仅仅是示意性的， 例如， 所述单元的划分， 仅仅为一种逻辑功能划分， 实际实现吋可以有另外的 划分方式， 例如多个单元或组件可以结合或者可以集成到另一个系统， 或一些 特征可以忽略， 或不执行。 另一点， 所显示或讨论的相互之间的耦合或直接耦 合或通信连接可以是通过一些接口， 装置或单元的间接耦合或通信连接， 可以 是电性， 机械或其它的形式。
[0073] 所述作为分离部件说明的单元可以是或者也可以不是物理上分幵的， 作为单元 显示的部件可以是或者也可以不是物理单元， 即可以位于一个地方， 或者也可 以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或者全部单元 来实现本实施例方案的目的。
[0074] 另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元中， 也可 以是各个单元单独物理存在， 也可以两个或两个以上单元集成在一个单元中。
[0075] 所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用吋， 可 以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发明的技术方案 本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产 品的形式体现出来， 该计算机软件产品存储在一个存储介质中， 包括若干指令 用以使得一台计算机设备 （可以是个人计算机， 服务器， 或者网络设备等） 执 行本发明各个实施例所述方法的全部或部分步骤。 而前述的存储介质包括： U盘 、 移动硬盘、 只读存储器 （ROM, Read-Only
Memory) 、 随机存取存储器 （RAM, Random Access Memory) 、 磁碟或者光盘 等各种可以存储程序代码的介质。
[0076] 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不能认 定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通技术 人员来说， 在不脱离本发明构思的前提下做出若干等同替代或明显变型， 而且 性能或用途相同， 都应当视为属于本发明由所提交的权利要求书确定的专利保 护范围。

Claims

权利要求书
[权利要求 1] 一种基于动态口令和 USBKEY的控制系统， 其特征在于， 所述控制系 统包括动态口令控制芯片、 USB控制芯片、 USB接口、 电池以及检测 电路；
所述检测电路的输入端连接所述 USB接口， 所述检测电路的第一输出 端连接所述动态口令控制芯片的状态检测端， 所述检测电路在检测到 USB接口连接外部设备吋， 向所述动态口令控制芯片输出检测信号； 所述动态口令控制芯片在接收到所述检测信号吋进入休眠状态； 所述电池连接所述动态口令控制芯片的电源输入端， 所述电池为所述 动态口令控制芯片供电；
所述 USB控制芯片的输入 /输出端连接所述 USB接口， 所述 USB控制 芯片通过所述 USB接口与所述外部设备进行交互通信。
[权利要求 2] 如权利要求 1所述的控制系统， 其特征在于， 所述控制系统还包括键 盘电路；
所述键盘电路包括多个按键、 多条第一信号线以及多条第二信号线， 所述多条第一信号线与多条第二信号线交叉排列， 每一按键连接一条 第一信号线和一条第二信号线， 所述多条第一信号线和所述多条第二 信号线连接所述动态口令控制芯片的多个输入端， 所述多条第二信号 线中的至少一条第二信号线连接所述 USB控制芯片的输入端； 所述检测电路的第二输出端连接所述键盘电路中的一条第一信号线， 所述检测电路在所述 USB接口连接外部设备吋， 调整其所连接的第一 信号线的电平状态， 使所述 USB控制芯片接收所述键盘的按键信息。
[权利要求 3] 如权利要求 2所述的控制系统， 其特征在于， 所述动态口令控制芯片 还用于当检测到所述 USB接口未连接外部设备吋对按键进行扫描， 并 当接收到关机信号或者扫描吋间超过预设值吋， 进入休眠状态。
[权利要求 4] 如权利要求 2所述的控制系统， 其特征在于， 所述检测电路包括第一 电阻、 第二电阻以及幵关管；
所述第一电阻的第一端连接所述 USB接口的电源端， 所述第一电阻的 第二端连接所述第二电阻的第一端和所述幵关管的控制端， 所述第二 电阻的第二端与所述幵关管的输入端共地连接， 所述幵关管的控制端 为所述检测电路的第一输出端， 所述幵关管的输出端为所述检测电路 的第二输出端。
[权利要求 5] 如权利要求 2所述的控制系统， 其特征在于， 所述 USB控制芯片与所 述键盘电路之间还设有隔离电路， 所述隔离电路包括单向导通器件和 上拉电阻， 所述单向导通器件的输入端连接所述上拉电阻的第一端， 所述单向导通器件的输出端构成所述隔离电路的输出端， 每个上拉电 阻的第一端连接所述 USB控制芯片对应的一个输入端， 所述每个上拉 电阻的第二端连接直流电源。
[权利要求 6] 如权利要求 1至 5任一项所述的控制系统， 其特征在于， 所述控制系统 还包括显示屏， 所述动态口令控制芯片的输出端和所述 USB控制芯片 的输出端连接所述显示屏的输入端；
所述动态口令控制芯片在检测到所述 USB接口连接外部设备吋， 停止 控制所述显示屏并进入休眠状态；
所述 USB控制芯片在所述 USB接口连接外部设备吋对所述显示屏进行 控制。
[权利要求 7] 如权利要求 1所述的控制系统， 其特征在于， 所述 USB控制芯片的每 个输出端与其所连接的所述显示屏的每个输入端之间设有隔离电阻。
[权利要求 8] —种基于权利要求 1所述的基于动态口令和 USBKEY的控制系统的控 制方法， 其特征在于， 所述控制方法包括以下步骤：
所述检测电路检测到 USB接口连接外部设备吋， 向所述动态口令控制 芯片输出检测信号；
所述动态口令控制芯片接收到所述检测信号吋进入休眠状态； 所述电池为所述动态口令控制芯片供电；
所述 USB控制芯片通过所述 USB接口与所述外部设备进行交互通信。
[权利要求 9] 如权利要求 8所述的控制方法， 其特征在于， 所述控制方法还包括以 下步骤： 所述动态口令控制芯片检测到所述 USB接口未连接外部设备吋对按键 进行扫描， 并当接收到关机信号或者扫描吋间超过预设值吋， 进入休 眠状态。
[权利要求 10] 如权利要求 8所述的控制方法， 其特征在于， 所述控制方法还包括以 下步骤：
所述动态口令控制芯片检测到所述 USB接口连接外部设备吋， 停止控 制所述显示屏并进入休眠状态；
所述 USB控制芯片在所述 USB接口连接外部设备吋对所述显示屏进行 控制。
PCT/CN2015/096843 2015-07-28 2015-12-09 基于动态口令和usbkey的控制系统及其控制方法 WO2017016131A1 (zh)

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