WO2018130065A1 - 一种控制双摄像头的电路、移动终端和方法 - Google Patents

一种控制双摄像头的电路、移动终端和方法 Download PDF

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Publication number
WO2018130065A1
WO2018130065A1 PCT/CN2017/118271 CN2017118271W WO2018130065A1 WO 2018130065 A1 WO2018130065 A1 WO 2018130065A1 CN 2017118271 W CN2017118271 W CN 2017118271W WO 2018130065 A1 WO2018130065 A1 WO 2018130065A1
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WIPO (PCT)
Prior art keywords
camera
power source
circuit
control unit
source
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PCT/CN2017/118271
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English (en)
French (fr)
Inventor
王敏
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维沃移动通信有限公司
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Publication date
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Publication of WO2018130065A1 publication Critical patent/WO2018130065A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/65—Control of camera operation in relation to power supply
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/52—Details of telephonic subscriber devices including functional features of a camera

Definitions

  • the embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a circuit, a mobile terminal, and a method for controlling a dual camera.
  • a synchronization signal is required between the dual cameras to maintain synchronization of the dual cameras, which can be powered by the same power source or by different power sources.
  • the dual camera is powered by a different power source, if only one camera in the dual camera works, the synchronization signal may leak to the inoperative camera, resulting in a safety hazard.
  • Embodiments of the present disclosure provide a circuit, a mobile terminal, and a method for controlling a dual camera to solve the problem that when only two cameras in the dual camera are operated when the dual cameras are powered by different power sources, the synchronization signal may leak to an inoperative state.
  • the camera has a problem of security risks.
  • an embodiment of the present disclosure provides a circuit for controlling a dual camera, including: a first camera, a second camera, a first power source, a second power source, and a control unit, wherein:
  • the first power source supplies power to the first camera, and the second power source supplies power to the second camera;
  • a first end of the first camera is coupled to a first end of the control unit, a first end of the second camera is coupled to a second end of the control unit, and the control unit is configured to a synchronization signal is transmitted between a camera and the second camera;
  • the control unit is configured to detect whether only one of the first camera and the second camera operates, and if so, control a circuit disconnection between the first end and the second end of the control unit.
  • an embodiment of the present disclosure further provides a mobile terminal, including the circuit for controlling a dual camera provided by an embodiment of the present disclosure.
  • an embodiment of the present disclosure further provides a method for controlling a dual camera, which is applied to a mobile terminal, and the method includes:
  • the circuit for transmitting the synchronization signal between the first camera and the second camera is disconnected.
  • an embodiment of the present disclosure further provides a mobile terminal, including: a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program is processed
  • a mobile terminal including: a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program is processed
  • embodiments of the present disclosure further provide a computer readable storage medium having stored thereon a computer program, the computer program being implemented by a processor to implement control as described above by a mobile terminal The steps in the dual camera approach.
  • the circuit for controlling the dual camera includes: a first camera, a second camera, a first power source, a second power source, and a control unit, wherein: the first power source supplies power to the first camera The second power source supplies power to the second camera; the first end of the first camera is connected to the first end of the control unit, the first end of the second camera and the first end of the control unit a two-terminal connection, the control unit is configured to transmit a synchronization signal between the first camera and the second camera; the control unit is configured to detect whether there is only one of the first camera and the second camera The camera operates, and if so, controls the circuit between the first end and the second end of the control unit to be disconnected. In this way, when only one camera is working, the circuit for transmitting the synchronization signal between the two cameras is disconnected, so that the synchronization signal does not leak to the inoperative camera, thereby eliminating the safety hazard.
  • FIG. 1 is a schematic structural diagram of a circuit for controlling a dual camera according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of a method for controlling a dual camera provided by an embodiment of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • the circuit 100 for controlling a dual camera includes: a first camera 101 , a second camera 102 , and a first camera A power source 103, a second power source 104, and a control unit 105, wherein:
  • the first power source 103 supplies power to the first camera 101
  • the second power source 104 supplies power to the second camera 102.
  • the first end of the first camera 101 is connected to the first end of the control unit 105
  • the first end of the second camera 102 is connected to the second end of the control unit 105
  • the control unit 105 is used by the control unit 105. Transmitting a synchronization signal between the first camera and the second camera;
  • the control unit 105 is configured to detect whether only one of the first camera and the second camera operates, and if so, control a circuit disconnection between the first end and the second end of the control unit.
  • the first camera and the second camera may be two rear cameras of the mobile terminal, or may be a front camera and a rear camera of the mobile terminal.
  • the first camera 101 and the second camera 102 described above transmit a synchronization signal through the control unit 105, and the synchronization signal can maintain synchronization between the two cameras of the mobile terminal.
  • the circuit for controlling the disconnection between the first end and the second end of the control unit 105 may be controlled by a plurality of switches, or may be controlled by one switch. It can also be controlled by a circuit having a switching function inside the control unit, such as a triode or a MOS tube.
  • the mobile terminal may be a mobile phone with a dual camera, a Tablet Personal Computer, a Laptop Computer, a personal digital assistant (PDA), and a mobile Internet.
  • a mobile Internet Device MID
  • Wearable Device and so on.
  • a circuit for controlling a dual camera includes: a first camera 101, a second camera 102, a first power source 103, a second power source 104, and a control unit 105, wherein: the first The power source 103 supplies power to the first camera 101, and the second power source 104 supplies power to the second camera 102.
  • the first end of the first camera 101 is connected to the first end of the control unit 105.
  • the first end of the second camera 102 is connected to the second end of the control unit 105, and the control unit 105 is configured to transmit a synchronization signal between the first camera and the second camera; the control unit 105 And detecting whether only one of the first camera and the second camera is working, and if so, controlling a circuit disconnection between the first end and the second end of the control unit. In this way, when only one camera is working, the circuit for transmitting the synchronization signal between the two cameras is disconnected, so that the synchronization signal does not leak to the inoperative camera, thereby eliminating the safety hazard.
  • FIG. 2 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • the circuit for controlling the dual camera includes:
  • a first camera 101 a second camera 102, a first power source 103, a second power source 104, a third power source 1051, a fourth power source 1052, a diode 1053 and a first NMOS transistor 1054;
  • the first power source 103 supplies power to the first camera 101
  • the second power source 104 supplies power to the second camera 102.
  • the first end of the first camera 101 is connected to the source of the first NMOS transistor 1054, and the first end of the second camera 102 is connected to the drain of the first NMOS transistor 1054.
  • the third power source 1051 is connected to the second end of the first camera 101
  • the fourth power source 1052 is connected to the second end of the second camera 102
  • the third power source 1051 and the first NMOS tube 1054 are connected.
  • a gate is connected and connected to the anode of the diode 1053, and a cathode of the diode 1053 is connected to the fourth power source 1052;
  • the first NMOS transistor is powered by the first power source and the third power source, and the source and the drain are disconnected when the second power source and the fourth power source are not powered;
  • the first NMOS transistor is powered by the second power source and the fourth power source, and the source and the drain are disconnected when the first power source and the third power source are not powered.
  • the working principle of the above NMOS transistor can be understood as follows. When the gate voltage of the NMOS transistor is greater than the source voltage, the source and drain of the NMOS transistor are turned on. In addition, when the gate voltage of the NMOS transistor is not greater than the source voltage, the source and drain of the NMOS transistor are turned off.
  • a general understanding can be considered to control the conduction and disconnection between the source and the drain of the NMOS transistor by controlling the gate of the NMOS transistor.
  • the source of the first NMOS transistor 1054 can be 1.8V, and the third power source and the fourth power source can output a 2.8V power supply.
  • the gate of the first NMOS transistor 1054 is 2.8V, because the voltage of the gate is greater than the source. The voltage, the gate and the drain are turned on, and the synchronization signals of the two cameras are connected together.
  • the third power source 1051 can be 2.8V, and the fourth power source 1052 is 0V, at which time the diode 1053 is turned on.
  • the gate voltage of the first NMOS transistor 1054 is the turn-on voltage of the diode 1053, about 0.7V
  • the source voltage is 1.8V
  • the voltage of the gate is smaller than the voltage of the source.
  • the source and the drain are disconnected, thereby The sync signal does not leak from the first camera 101 to the second camera 102.
  • the third power source 1051 is 0V
  • the fourth power source 1052 can be 2.8V
  • the diode 1053 is reverse turned off
  • the gate voltage is 0V
  • the source is extremely 0V.
  • the first NMOS transistor 1054 is not turned on, so that the synchronization signal does not leak from the second camera to the first camera.
  • the circuit further includes a first resistor 1055, the third power source 1051 is connected to the first end of the first resistor 1055, and the second end of the first resistor 1055 is The anode of the diode 1053 is connected and connected to the gate of the first NMOS transistor 1054.
  • the first resistor 1055 can be understood as a pull-up resistor, which functions as a current limiting.
  • FIG. 4 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • the circuit for controlling the dual camera includes:
  • a first camera 101 a second camera 102, a first power source 103, a second power source 104, a first PMOS transistor 1056, a second PMOS transistor 1057, a second NMOS transistor 1058 and a fifth power source 1059;
  • the first power source 103 supplies power to the first camera 101
  • the second power source 104 supplies power to the second camera 102.
  • the first end of the first camera 101 is connected to the source of the second PMOS transistor 1057, and the first end of the second camera 102 is connected to the drain of the second PMOS transistor 1057.
  • the gate of the second PMOS transistor 1057 is connected to the drain of the first PMOS transistor 1056 and the drain of the second NMOS transistor 1058, and the source of the first PMOS transistor 1056 is connected to the fifth power supply 1059.
  • the source of the second NMOS transistor 1058 is grounded, and the second power source 104 is connected to the gate of the first PMOS transistor 1056 and the gate of the second NMOS transistor 1058.
  • the second PMOS transistor is powered by the first power source and the fifth power source, and when the second power source is not powered, the source and the drain are disconnected;
  • the second PMOS transistor is powered by the second power source and the fifth power source, and the source and the drain are disconnected when the first power source is not powered.
  • the working principle of the above PMOS transistor can be understood as follows. When the gate voltage of the PMOS transistor is less than the source voltage, the source and drain of the PMOS transistor are turned on. In addition, when the gate voltage of the PMOS transistor is not less than the source voltage, the source and drain of the PMOS transistor are turned off.
  • a general understanding can be considered to control the conduction and disconnection between the source and the drain of the PMOS transistor by controlling the gate of the PMOS transistor.
  • the source of the second PMOS transistor 1057 may have a voltage of 1.8V, and the second power supply is 1.8.
  • the voltage of V at this time, the gate voltage of the second NMOS transistor 1058 has 1.8V, and the source of the second NMOS transistor 1058 is grounded, and the voltage is 0V. Therefore, the second NMOS transistor 1058 is turned on, and the drain voltage of the second NMOS transistor 1058 is turned on by 0V, so that the gate of the second PMOS transistor 1057 is 0V.
  • the second PMOS transistor 1057 is turned on, and the first camera 101 and the second camera 102 are connected together by a synchronization signal.
  • the second power source 104 When only the first camera 101 is in operation, the second power source 104 is 0V. At this time, the first PMOS transistor 1056 is turned on, and the drain of the first PMOS transistor 1056 has a voltage of 1.8V, so that the gate of the second PMOS transistor 1057 also has 1.8. The V voltage, while the source of the second PMOS transistor 1057 also has a voltage of 1.8V. At this time, the source and the drain of the second PMOS transistor 1057 are disconnected, and the synchronization signal does not flow from the first camera 101 to the second camera 102, thereby ensuring safety.
  • the second power source 104 is 1.8V.
  • the second NMOS transistor 1058 is turned on, and the drain voltage of the second NMOS transistor 1058 is 0V, so that the gate voltage of the second PMOS transistor 1057 is also 0V, since the first camera 101 does not work, the source voltage of the second PMOS transistor 1057 is 0V.
  • the second PMOS transistor 1057 is not turned on, and the synchronization signal does not flow from the second camera 102 to the first camera 101. , to ensure safety.
  • the circuit 100 further includes a second resistor 10510.
  • the fifth power source 1059 is connected to the source of the first PMOS transistor 1056 through the second resistor 10510.
  • the second resistor 10510 can be understood as a pull-up resistor, which acts as a current limiting function to protect the circuit.
  • control unit 105 further includes a third resistor 10511 , and a source of the second NMOS transistor 1058 is grounded through the third resistor 10511 .
  • the third resistor 10511 can be understood as a pull-down resistor, which acts as a current limiting function and can protect the circuit.
  • FIG. 7 is a schematic structural diagram of another circuit for controlling a dual camera according to an embodiment of the present disclosure.
  • the circuit 100 for controlling a dual camera includes:
  • the first power source 103 is connected to the third end of the first camera 101, and the first power source 103 is connected to the fourth end of the first camera 101 through the first serial clock line 106. And connecting to the fifth end of the first camera 101 through the first serial data line 107;
  • the second power source 104 is connected to the third end of the second camera 102, connected to the fourth end of the second camera 102 through the second serial clock line 108, and passes through the second serial
  • the data line 109 is connected to the fifth end of the second camera 102;
  • the first end of the first camera 101 is connected to the first end of the control unit 105
  • the first end of the second camera 102 is connected to the second end of the control unit 105
  • the control unit 105 is used by the control unit 105. Transmitting a synchronization signal between the first camera and the second camera;
  • the control unit 105 is configured to detect whether only one of the first camera and the second camera operates, and if so, control a circuit disconnection between the first end and the second end of the control unit.
  • the serial clock line and the serial data line are generally referred to as an I2C (Inter-Integrated Circuit) bus, and are used for connecting a microcontroller and its peripheral devices, and are widely used in the field of microelectronic communication control.
  • I2C Inter-Integrated Circuit
  • serial clock line and the serial data line in this embodiment can also be applied to the circuits of FIGS. 2 to 6.
  • the embodiment of the present disclosure further provides a mobile terminal, including the circuit for controlling a dual camera according to any one of the embodiments of the present disclosure.
  • FIG. 8 is a flowchart of a method for controlling a dual camera according to an embodiment of the present disclosure, which is applied to a mobile terminal. As shown in FIG. 8, the method for controlling a dual camera includes the following steps:
  • Step 801 When the first camera of the mobile terminal is working and the second camera is not working, the circuit for transmitting the synchronization signal between the first camera and the second camera is disconnected.
  • the camera may be a front camera or a rear camera
  • the circuit for controlling the synchronization signal between the first camera and the second camera may be disconnected, and may be a switch or multiple The switch, or it can be a circuit that implements the switching function.
  • Step 802 when the second camera of the mobile terminal is working and the first camera is not working, the circuit for transmitting the synchronization signal between the first camera and the second camera is disconnected.
  • the circuit for controlling the transmission of the synchronization signal between the first camera and the second camera is disconnected, and may be a switch, a plurality of switches, or a circuit for implementing the switching function. .
  • the method may be applied to the mobile terminal of any implementation manner provided in the embodiments of the present disclosure, and the specific implementation process may be implemented by using a circuit for controlling dual cameras provided in the embodiments of the present disclosure. , not to repeat here.
  • the circuit for transmitting the synchronization signal between the first camera and the second camera is disconnected;
  • the circuit for transmitting the synchronization signal between the first camera and the second camera is disconnected. In this way, when only one camera is working, the synchronization signal does not leak the camera that does not work, eliminating the safety hazard.
  • the disclosed apparatus and method 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.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • 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 units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. 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 disclosure 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 may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such an understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the prior art or a portion of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included 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 disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本公开文本实施例提供一种控制双摄像头的电路、移动终端和方法。该电路可包括：第一摄像头、第二摄像头、第一电源、第二电源和控制单元，其中：第一电源为第一摄像头供电，第二电源为第二摄像头供电；第一摄像头的第一端与控制单元的第一端连接，第二摄像头的第一端与控制单元的第二端连接，控制单元用于在第一摄像头与第二摄像头之间传输同步信号；控制单元用于检测第一摄像头和第二摄像头中是否只有一个摄像头工作，若是，则控制控制单元的第一端和第二端之间的电路断开。这样，当只有一个摄像头工作时，将两个摄像头之间传输同步信号的电路断开，这样同步信号就不会漏电到不工作的摄像头，消除了安全隐患。

Description

一种控制双摄像头的电路、移动终端和方法
相关申请的交叉参考
本申请主张在2017年1月12日在中国提交的中国专利申请号No.201710020866.2的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本实施例涉及通信技术领域，尤其涉及一种控制双摄像头的电路、移动终端和方法。
背景技术
随着移动终端的迅速发展，越来越多的移动终端配备了双摄像头以支持3D拍照或者其他效果拍照，并且配备了双摄像头的移动终端越来越受用户的欢迎。但是，双摄像头之间需要一个同步信号来保持双摄像头的同步，该同步信号可以由同一个电源供电，也可以由不同的电源供电。当双摄像头由不同的电源供电时，若双摄像头中只有一个摄像头工作，就会导致同步信号可能漏电到不工作的摄像头，从而导致安全隐患。
发明内容
(一)要解决的技术问题
本公开文本实施例提供一种控制双摄像头的电路、移动终端和方法，以解决当双摄像头由不同的电源供电时，若双摄像头中只有一个摄像头工作，就会导致同步信号漏电到不工作的摄像头，存在安全隐患的问题。
(二)技术方案
第一方面，本公开文本实施例提供一种控制双摄像头的电路，包括：第一摄像头、第二摄像头、第一电源、第二电源和控制单元，其中：
所述第一电源为所述第一摄像头供电，所述第二电源为所述第二摄像头供电；
所述第一摄像头的第一端与所述控制单元的第一端连接，所述第二摄像 头的第一端与所述控制单元的第二端连接，所述控制单元用于在所述第一摄像头与所述第二摄像头之间传输同步信号；并且
所述控制单元用于检测所述第一摄像头和所述第二摄像头中是否只有一个摄像头工作，若是，则控制所述控制单元的第一端和第二端之间的电路断开。
第二方面，本公开文本实施例还提供一种移动终端，包括本公开文本实施例提供的控制双摄像头的电路。
第三方面，本公开文本实施例还提供一种控制双摄像头的方法，应用于移动终端，所述方法包括：
当所述移动终端的第一摄像头工作且第二摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开；以及
当所述移动终端的第二摄像头工作且第一摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开。
第四方面，本公开文本实施例还提供一种移动终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如上所述的控制双摄像头的方法中的步骤。
第五方面，本公开文本实施例还提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时通过移动终端实现如上所述的控制双摄像头的方法中的步骤。
(三)有益效果
本公开文本实施例所提供的上述技术方案的有益效果如下：
这样，本公开文本实施例中，控制双摄像头的电路，包括：第一摄像头、第二摄像头、第一电源、第二电源和控制单元，其中：所述第一电源为所述第一摄像头供电，所述第二电源为所述第二摄像头供电；所述第一摄像头的第一端与所述控制单元的第一端连接，所述第二摄像头的第一端与所述控制单元的第二端连接，所述控制单元用于在所述第一摄像头与所述第二摄像头之间传输同步信号；所述控制单元用于检测所述第一摄像头和所述第二摄像头中是否只有一个摄像头工作，若是，则控制所述控制单元的第一端和第二 端之间的电路断开。这样，当只有一个摄像头工作时，将两个摄像头之间传输同步信号的电路断开，这样同步信号就不会漏电到不工作的摄像头，消除了安全隐患。
附图说明
为了更清楚地说明本公开文本实施例或现有技术中的技术方案，下面将对实施例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公开文本的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开文本实施例提供的一种控制双摄像头的电路结构示意图；
图2是本公开文本实施例提供的另一种控制双摄像头的电路结构示意图；
图3是本公开文本实施例提供的另一种控制双摄像头的电路结构示意图；
图4是本公开文本实施例提供的另一种控制双摄像头的电路结构示意图；
图5是本公开文本实施例提供的另一种控制双摄像头的电路结构示意图；
图6是本公开文本实施例提供的另一种控制双摄像头的电路结构示意图；
图7是本公开文本实施例提供的另一种控制双摄像头的电路结构示意图；以及
图8是本公开文本实施例提供的一种控制双摄像头的方法的流程图。
具体实施方式
下面将结合本公开文本实施例中的附图，对本公开文本实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开文本一部分实施例，而不是全部的实施例。基于本公开文本中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开 文本保护的范围。
第一实施例
参阅图1，图1是本公开文本实施例提供的一种控制双摄像头的电路的结构示意图，如图1所示，控制双摄像头的电路100包括：第一摄像头101、第二摄像头102、第一电源103、第二电源104和控制单元105，其中：
所述第一电源103为所述第一摄像头101供电，所述第二电源104为所述第二摄像头102供电；
所述第一摄像头101的第一端与所述控制单元105的第一端连接，所述第二摄像头102的第一端与所述控制单元105的第二端连接，所述控制单元105用于在所述第一摄像头与所述第二摄像头之间传输同步信号；
所述控制单元105用于检测所述第一摄像头和所述第二摄像头中是否只有一个摄像头工作，若是，则控制所述控制单元的第一端和第二端之间的电路断开。
本公开文本实施例中，上述第一摄像头和第二摄像头可以是移动终端的两个后置摄像头，或者也可以是移动终端的前置摄像头和后置摄像头。上述第一摄像头101与第二摄像头102通过控制单元105来传输同步信号，该同步信号可以保持移动终端两个摄像头之间的同步。
本公开文本实施例中，上述控制所述控制单元105的第一端和第二端之间的电路断开，可以是由某几个开关共同控制，也可以是由一个开关进行的控制，当然也可以是控制单里面有开关功能的电路进行的控制，例如三极管或者MOS管进行的控制。
本公开文本实施例中，上述移动终端可以是带有双摄像头的手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(personal digital assistant，简称PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等等。
作为本公开文本实施例的一种实施方式，控制双摄像头的电路，包括：第一摄像头101、第二摄像头102、第一电源103、第二电源104和控制单元105，其中：所述第一电源103为所述第一摄像头101供电，所述第二电源104为所述第二摄像头102供电；所述第一摄像头101的第一端与所述控制 单元105的第一端连接，所述第二摄像头102的第一端与所述控制单元105的第二端连接，所述控制单元105用于在所述第一摄像头与所述第二摄像头之间传输同步信号；所述控制单元105用于检测所述第一摄像头和所述第二摄像头中是否只有一个摄像头工作，若是，则控制所述控制单元的第一端和第二端之间的电路断开。这样，当只有一个摄像头工作时，将两个摄像头之间传输同步信号的电路断开，这样同步信号就不会漏电到不工作的摄像头，消除了安全隐患。
第二实施例
参阅图2，图2是本公开文本实施例提供的另一种控制双摄像头的电路的结构示意图。如图2所示，控制双摄像头的电路包括：
第一摄像头101、第二摄像头102、第一电源103、第二电源104、第三电源1051、第四电源1052、二极管1053和第一NMOS管1054；
所述第一电源103为所述第一摄像头101供电，所述第二电源104为所述第二摄像头102供电；
其中，所述第一摄像头101的第一端与所述第一NMOS管1054的源极连接，所述第二摄像头102的第一端与所述第一NMOS管1054的漏极连接，所述第三电源1051与所述第一摄像头101的第二端连接，所述第四电源1052与所述第二摄像头102的第二端连接，所述第三电源1051与所述第一NMOS管1054的栅极连接，并且与所述二极管1053的正极连接，所述二极管1053的负极与所述第四电源1052连接；
所述第一NMOS管在所述第一电源和所述第三电源供电，所述第二电源和所述第四电源未供电时，源极与漏极断开；
以及所述第一NMOS管在所述第二电源和所述第四电源供电，所述第一电源和所述第三电源未供电时，源极与漏极断开。
本公开文本实施例中，上述NMOS管的工作原理可以这样理解。当NMOS管的栅极电压大于源极电压时，NMOS管的源极和漏极就导通。另外，当NMOS管的栅极电压不大于源极电压时，NMOS管的源极和漏极就断开。通俗的理解可以认为通过控制NMOS管的栅极来控制NMOS管源极与漏极之间的导通与断开。
本公开文本实施例中，当第一摄像头101和第二摄像头102同时工作，需要通过同步信号进行同步。此时第一NMOS管1054的源极可以为1.8V，第三电源和第四电源可以输出2.8V电源，此时即第一NMOS管1054的栅极为2.8V，由于栅极的电压大于源极的电压，栅极与漏极导通，此时两个摄像头的同步信号连接在一起。
当只有第一摄像头101工作时，第三电源1051可以为2.8V，第四电源1052为0V，此时二极管1053导通。此时第一NMOS管1054的栅极电压为二极管1053的导通电压，约0.7V，源极电压1.8V，栅极的电压小于源极的电压，此时源极和漏极断开，从而同步信号不会从第一摄像头101漏电到第二摄像头102。
当只有第二摄像头102工作时，第三电源1051为0V，第四电源1052可以为2.8V，二极管1053反向截止，栅极电压为0V，源极为0V。此时第一NMOS管1054不导通，从而同步信号不会从第二摄像头漏电到第一摄像头。
可选的，如图3所示，所述电路还包括第一电阻1055，所述第三电源1051与所述第一电阻1055的第一端连接，所述第一电阻1055的第二端与所述二极管1053的正极连接，并且与所述第一NMOS管1054的栅极连接。
本公开文本实施例中，上述第一电阻1055可以理解为一个上拉电阻，起到限流的作用。
第三实施例
参阅图4，图4是本公开文本实施例提供的另一种控制双摄像头的电路的结构示意图。如图4所示，控制双摄像头的电路包括：
第一摄像头101、第二摄像头102、第一电源103、第二电源104、第一PMOS管1056、第二PMOS管1057、第二NMOS管1058和第五电源1059；
所述第一电源103为所述第一摄像头101供电，所述第二电源104为所述第二摄像头102供电；
其中，所述第一摄像头101的第一端与所述第二PMOS管1057的源极连接，所述第二摄像头102的第一端与所述第二PMOS管1057的漏极连接，所述第二PMOS管1057的栅极与所述第一PMOS管1056的漏极和所述第二NMOS管1058的漏极连接，所述第一PMOS管1056的源极与所述第五电源 1059连接，所述第二NMOS管1058的源极接地，所述第二电源104与所述第一PMOS管1056的栅极和所述第二NMOS管1058的栅极连接；
所述第二PMOS管在所述第一电源和所述第五电源供电，所述第二电源未供电时，源极与漏极断开；并且
所述第二PMOS管在所述第二电源和所述第五电源供电，所述第一电源未供电时，源极与漏极断开。
本公开文本实施例中，上述PMOS管的工作原理可以这样理解。当PMOS管的栅极电压小于源极电压时，PMOS管的源极和漏极就导通。另外，当PMOS管的栅极电压不小于源极电压时，PMOS管的源极和漏极就断开。通俗的理解可以认为通过控制PMOS管的栅极来控制PMOS管源极与漏极之间的导通与断开。
本公开文本实施例中，当第一摄像头101和第二摄像头102同时工作时，由于给第一摄像头101上电，第二PMOS管1057的源可以有1.8V的电压，给第二电源上1.8V的电压，此时第二NMOS管1058的栅极电压有1.8V，而第二NMOS管1058的源极接地，电压为0V。所以第二NMOS管1058导通，第二NMOS管1058导通的漏极电压为0V，这样第二PMOS管1057的栅极为0V。此时由于第二PMOS管1057的栅极电压小于源极电压，所以第二PMOS管1057导通，第一摄像头101和第二摄像头102通过同步信号连接在一起。
当只有第一摄像头101工作时，第二电源104为0V，此时第一PMOS管1056导通，第一PMOS管1056的漏极有1.8V电压，从而第二PMOS管1057的栅极也有1.8V电压，而第二PMOS管1057的源极也有1.8V电压。此时第二PMOS管1057的源极与漏极断开，同步信号就不会从第一摄像头101流到第二摄像头102，保证了安全。
当只有第二摄像头102工作时，第二电源104为1.8V，此时第二NMOS管1058导通，第二NMOS管1058的漏极电压为0V，从而第二PMOS管1057的栅极电压也为0V，由于第一摄像头101不工作，所以第二PMOS管1057的源极电压为0V，此时第二PMOS管1057不导通，同步信号不会从第二摄像头102流到第一摄像头101，保证了安全。
可选的，如图5所示，所述电路100还包括第二电阻10510，所述第五电源1059通过所述第二电阻10510与所述第一PMOS管1056的源极连接。
本公开文本实施例中，上述第二电阻10510可以理解为一个上拉电阻，它起到了限流的作用，能够保护电路。
可选的，如图6所示，所述控制单元105还包括第三电阻10511，所述第二NMOS管1058的源极通过所述第三电阻10511进行接地。
本公开文本实施例中，上述第三电阻10511可以理解为一个下拉电阻，它起到了限流的作用，能够保护电路。
第四实施例
参见图7，图7是本公开文本实施例提供的另一种控制双摄像头的电路的结构示意图，如图7所示，控制双摄像头的电路100包括：
第一摄像头101、第二摄像头102、第一电源103、第二电源104、控制单元105、第一串行时钟线106、第一串行数据线107、第二串行时钟线108和第二串行数据线109；
其中，所述第一电源103与所述第一摄像头101的第三端连接，所述第一电源103通过所述第一串行时钟线106与所述第一摄像头101的第四端连接，并且通过所述第一串行数据线107与所述第一摄像头101的第五端连接；
所述第二电源104与所述第二摄像头102的第三端连接，通过所述第二串行时钟线108与所述第二摄像头102的第四端连接，并且通过所述第二串行数据线109与所述第二摄像头102的第五端连接；
所述第一摄像头101的第一端与所述控制单元105的第一端连接，所述第二摄像头102的第一端与所述控制单元105的第二端连接，所述控制单元105用于在所述第一摄像头与所述第二摄像头之间传输同步信号；
所述控制单元105用于检测所述第一摄像头和所述第二摄像头中是否只有一个摄像头工作，若是，则控制所述控制单元的第一端和第二端之间的电路断开。
本公开文本实施例中，上述串行时钟线和串行数据线一般合称为I2C(Inter-Integrated Circuit)总线，用于连接微控制器及其外围设备，是微电子通信控制领域广泛采用的一种总线标准。它是同步通信的一种特殊形式， 具有接口线少，控制方式简单，器件封装形式小，通信速率较高等优点，通过串行数据线和串行时钟线在连接到总线的器件间传递信息。
需要注意的是，本实施例中的串行时钟线和串行数据线，即I2C总线，也可以运用到如图2至图6的电路中。
本公开文本实施例还提供一种移动终端，该移动终端包括本公开文本实施例中任意一实施方式的控制双摄像头的电路。
第五实施例
参阅图8，图8是本公开文本实施例提供的一种控制双摄像头的方法的流程图，应用于移动终端。如图8所示，该控制双摄像头的方法包括以下步骤：
步骤801、当所述移动终端的第一摄像头工作且第二摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开。
本公开文本实施例中，上述摄像头可以是前置摄像头或者后置摄像头，上述控制第一摄像头与所述第二摄像头之间传输同步信号的电路断开，可以是一个开关，也可以是多个开关，或者也可以是实现开关功能的一个电路。
步骤802、以及当所述移动终端的第二摄像头工作且第一摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开。
本公开文本实施例中，上述控制第一摄像头与所述第二摄像头之间传输同步信号的电路断开，可以是一个开关，也可以是多个开关，或者也可以是实现开关功能的一个电路。
另外，需要说明的是，本方法可以应用于本公开文本实施例中提供的任意实施方式的移动终端，其具体的实施过程可以是采用本公开文本实施例中提供的控制双摄像头的电路进行实现的，此处不作赘述。
本公开文本实施例，当所述移动终端的第一摄像头工作且第二摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开；以及当所述移动终端的第二摄像头工作且第一摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开。这样当只有一个摄像头工作时，同步信号不会漏电不工作的摄像头，消除了安全隐患。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各 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公开文本的范围。
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。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，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，实际实现时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。
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开的，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。
另外，在本公开文本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。
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时，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，本公开文本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)执行本公开文本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、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本公开文本的具体实施方式，但本公开文本的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开文本揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开文本的保护范围之内。因此，本公开文本的保护范围应以权利要求的保护范围为准。

Claims (11)

  1. 一种控制双摄像头的电路，所述电路包括：第一摄像头、第二摄像头、第一电源、第二电源和控制单元，其中：
    所述第一电源为所述第一摄像头供电，所述第二电源为所述第二摄像头供电；
    所述第一摄像头的第一端与所述控制单元的第一端连接，所述第二摄像头的第一端与所述控制单元的第二端连接，所述控制单元用于在所述第一摄像头与所述第二摄像头之间传输同步信号；并且
    所述控制单元用于检测所述第一摄像头和所述第二摄像头中是否只有一个摄像头工作，若是，则控制所述控制单元的第一端和第二端之间的电路断开。
  2. 根据权利要求1所述的电路，其中，所述控制单元包括：
    第三电源、第四电源、二极管和第一NMOS管；
    其中，所述第一摄像头的第一端与所述第一NMOS管的源极连接，所述第二摄像头的第一端与所述第一NMOS管的漏极连接，所述第三电源与所述第一摄像头的第二端连接，所述第四电源与所述第二摄像头的第二端连接，所述第三电源与所述第一NMOS管的栅极连接，并且与所述二极管的正极连接，所述二极管的负极与所述第四电源连接；
    所述第一NMOS管在所述第一电源和所述第三电源供电，所述第二电源和所述第四电源未供电时，源极与漏极断开；并且
    所述第一NMOS管在所述第二电源和所述第四电源供电，所述第一电源和所述第三电源未供电时，源极与漏极断开。
  3. 根据权利要求2所述的电路，其中，所述控制单元还包括第一电阻，所述第三电源与所述第一电阻的第一端连接，所述第一电阻的第二端与所述二极管的正极连接，并且与所述第一NMOS管的栅极连接。
  4. 根据权利要求1所述的电路，其中，所述控制单元包括：
    第一PMOS管、第二PMOS管、第二NMOS管和第五电源；
    其中，所述第一摄像头的第一端与所述第二PMOS管的源极连接，所述 第二摄像头的第一端与所述第二PMOS管的漏极连接，所述第二PMOS管的栅极与所述第一PMOS管的漏极和所述第二NMOS管的漏极连接，所述第一PMOS管的源极与所述第五电源连接，所述第二NMOS管的源极接地，所述第二电源与所述第一PMOS管的栅极和所述第二NMOS管的栅极连接；
    所述第二PMOS管在所述第一电源和所述第五电源供电，所述第二电源未供电时，源极与漏极断开；并且
    所述第二PMOS管在所述第二电源和所述第五电源供电，所述第一电源未供电时，源极与漏极断开。
  5. 根据权利要求4所述的电路，其中，所述控制单元还包括第二电阻，所述第五电源通过所述第二电阻与所述第一PMOS管的源极连接。
  6. 根据权利要求5所述的电路，其中，所述控制单元还包括第三电阻，所述第二NMOS管的源极通过所述第三电阻进行接地。
  7. 根据权利要求1至6中任一项所述的电路，还包括：
    第一串行时钟线、第一串行数据线、第二串行时钟线和第二串行数据线；
    其中，所述第一电源与所述第一摄像头的第三端连接，所述第一电源通过所述第一串行时钟线与所述第一摄像头的第四端连接，并且通过所述第一串行数据线与所述第一摄像头的第五端连接；并且
    所述第二电源与所述第二摄像头的第三端连接，通过所述第二串行时钟线与所述第二摄像头的第四端连接，并且通过所述第二串行数据线与所述第二摄像头的第五端连接。
  8. 一种移动终端，包括如权利要求1至7中任一项所述的电路。
  9. 一种控制双摄像头的方法，所述方法应用于移动终端，所述方法包括：
    当所述移动终端的第一摄像头工作且第二摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开；以及
    当所述移动终端的第二摄像头工作且第一摄像头不工作时，将所述第一摄像头与所述第二摄像头之间传输同步信号的电路断开。
  10. 一种移动终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求9所述的控制双摄像头的方法中的步骤。
  11. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求9所述的控制双摄像头的方法中的步骤。
PCT/CN2017/118271 2017-01-12 2017-12-25 一种控制双摄像头的电路、移动终端和方法 WO2018130065A1 (zh)

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