CN111866282A - Device for cutting off power supply of microphone and camera and communication terminal - Google Patents
Device for cutting off power supply of microphone and camera and communication terminal Download PDFInfo
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- CN111866282A CN111866282A CN202010834034.6A CN202010834034A CN111866282A CN 111866282 A CN111866282 A CN 111866282A CN 202010834034 A CN202010834034 A CN 202010834034A CN 111866282 A CN111866282 A CN 111866282A
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Abstract
The invention relates to a device for cutting off power supply of a microphone and a camera, which is arranged on a communication terminal and comprises: a first analog switch and a second analog switch; the first analog switch is provided with a first output end, a second output end, a first control end, a first input end, a second input end, a third input end and a fourth input end; the second analog switch is provided with a third output end, a fourth output end, a second control end, a fifth input end, a sixth input end, a seventh input end and an eighth input end; the first output end is connected with a microphone power supply end, the second output end is connected with a camera power supply end, the first input end is connected with the microphone power supply end, and the third input end is connected with a camera power supply end; the third output end is connected with a microphone state indicator lamp, the fourth output end is connected with a camera state indicator lamp, the sixth input end is connected with an indicator lamp power supply end, and the eighth input end is connected with the indicator lamp power supply end; the first control terminal and the second control terminal input the same signal. The power supply of the microphone and the camera can be physically cut off.
Description
Technical Field
The invention relates to the field of communication terminals, in particular to a device for cutting off power supply of a microphone and a camera and a communication terminal.
Background
Along with the development of science and technology, smart phones are more and more popular, people's lives are more and more kept away from mobile phones, various applications bring convenience to users and also bring potential safety hazards, trojan programs are implanted into the smart phones of many users under the condition that the users do not know, the programs can open a microphone in an stealing mode and the using permission of a camera can open a microphone of the mobile phone to monitor surrounding sounds under the condition that the users do not know, the cameras peep surrounding scenes, the privacy and the safety of the users are seriously infringed, the communication devices (mobile phones) are forbidden to be used or limited to be used in many places, most of the reasons are related to confidentiality, for example, important meetings, products which are not sold in a market and have confidentiality requirements are produced in factory workshops, and whether the communication devices (mobile phones) have cameras and the eyes and the ears of the microphones, the economic loss or bad results caused by the leakage of the secret are caused, so that the user is inconvenient and easy to damage the communication device (mobile phone), for example, important incoming calls are missed, when the user enters the places, the carrying of the communication device (mobile phone) is forbidden, or the camera of the communication device (mobile phone) is required to be stuck and blocked by adhesive tapes. Or damage the lens of the communication device (mobile phone) in the process of pasting the adhesive tape. The restriction or damage to the communication device (mobile phone) in the use environment is combined, and the communication device (mobile phone) is prohibited from carrying important incoming calls or short messages which may be missed.
Disclosure of Invention
In order to solve the problem that the mode of limiting the permission of the microphone and the camera is inconvenient, the invention provides the communication device with the function of physically cutting off the power supply of the microphone and the camera, so that a user can conveniently and quickly enter a place with a constraint requirement on the communication device (mobile phone) and the environment, and the user can not violate the regulations and miss important information and incoming calls because the user does not carry the communication device (mobile phone) accurately. Specifically, the present invention provides, in a first aspect, a device for cutting off power supply to a microphone and a camera, the device being disposed on a communication terminal, the device including: a first analog switch and a second analog switch;
the first analog switch is provided with a first output end, a second output end, a first control end, a first input end, a second input end, a third input end and a fourth input end; when the first control end receives a first level, the first output end is communicated with the first input end, and the second output end is communicated with the third input end; when the first control end receives a second level, the first output end is communicated with the second input end, and the second output end is communicated with the fourth input end;
the second analog switch is provided with a third output end, a fourth output end, a second control end, a fifth input end, a sixth input end, a seventh input end and an eighth input end; when the second control end receives a first level, the third output end is communicated with the fifth input end, and the fourth output end is communicated with the seventh input end; when the second control end receives a second level, the third output end is communicated with the sixth input end, and the fourth output end is communicated with the eighth input end;
the first output end is connected with a microphone power supply end, the second output end is connected with a camera power supply end, the first input end is connected with a microphone power supply end, the second input end is suspended or coupled with GND, the third input end is connected with a camera power supply end, and the fourth input end is suspended or coupled with GND;
the third output end is connected with a microphone state indicator, the other end of the microphone state indicator is coupled with GND, the fourth output end is connected with a camera state indicator, the other end of the camera state indicator is coupled with GND, the fifth input end is suspended or coupled with GND, the sixth input end is connected with an indicator power supply end, the seventh input end is suspended or coupled with GND, and the eighth input end is connected with the indicator power supply end;
the first control end and the second control end input the same signal.
Further, the first control terminal and the second control terminal are connected together to jointly receive the control signal.
Further, still include level switch and pull-down resistance, level switch one end is connected with the control power end, the other end with first control end and second control end are connected, first control end and second control end still with pull-down resistance connects, pull-down resistance's the other end is connected with GND.
Further, the first analog switch and the second analog switch adopt a bidirectional four-channel single-pole double-throw analog switch.
Further, the control power supply terminal, the microphone power supply terminal, the camera power supply terminal and the indicator light power supply terminal are coupled with a battery of the communication terminal.
Further, the level switch is disposed at a side edge of the communication terminal.
Further, the camera status indicator light and the microphone status indicator light are arranged on the edge of the side face of the bottom of the communication terminal.
Further, the first level is a low level, and the second level is a high level.
The invention also provides a communication terminal comprising the device.
The device and the terminal in the embodiment of the invention can conveniently and physically cut off the power supply functions of the microphone and the camera, can conveniently start power supply, are convenient for a user to conveniently and quickly enter a place and an environment with constraint requirements on the communication device (mobile phone), and can not violate regulations and miss important information and incoming calls because of not carrying the communication device (mobile phone) accurately.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a schematic diagram of the overall circuit of a power cut-off device in some embodiments of the invention;
FIG. 2 is a pin illustration of a power down device in some embodiments of the invention;
FIG. 3 is a functional diagram of the input signal of the power cut-off device according to some embodiments of the present invention;
fig. 4 is a schematic circuit diagram of an apparatus for cutting off power supply to a microphone and a camera according to some embodiments of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The embodiment of the invention provides a power supply cut-off device, which directly uses a physical switch to directly cut off the power supply of a microphone and a camera on a hardware circuit, thereby completely forbidding the microphone and the camera of a communication device (mobile phone) to work, achieving rapid, safe and thorough physical isolation, realizing that the microphone and the camera are forbidden to work and a green safety indicator lamp for the power failure of the microphone and the camera is arranged at the same time, and reminding a user of paying attention to the fact that the microphone and the camera of the communication device (mobile phone) of the user enter the power failure forbidding working state.
Specifically, referring to FIG. 1, the scheme is implemented using two bidirectional 4-channel Single Pole Double Throw (SPDT) analog switches having two control inputs (IN1-2 and IN3-4) with operating voltages from 1.8V to 5.5V. This analog switch is also referred to as a 2-channel Double Pole Double Throw (DPDT) configuration. This analog switch can handle both analog and digital signals. It is characterized by a bandwidth (30MHz) and a low impedance (0.62 TYP). Applications include signal gating, chopping, modulation or demodulation (modems), and signal multiplexing for analog-to-digital and digital-to-analog conversion systems. The two control inputs (IN1-2 and IN3-4) are directly set as physical switches, the power is on high level, the power is not on low level, and the power supply and power off states of the microphone and the camera are determined through the input control of the high level and the low level. As shown in fig. 2, the pin names, pin descriptions, and connection devices and signal descriptions are explained. As shown IN fig. 2, two control inputs (IN1-2 and IN3-4) are directly set as physical switches, power is supplied to high level, and power is not supplied to low level, the device pin 1234 is respectively connected to power supply pins of four devices, namely, a microphone, a camera, a microphone indicator light and a camera indicator light, and the power supply operating states of the four devices, namely, the microphone, the camera, the microphone indicator light and the camera indicator light, are set through the direct switching states of the device pin 1234, the normally-open pin 1234 and the long-closed pin 1234. As shown in fig. 3, the states of the control pin inputs 1-2,3-4 and the corresponding functions are shown. When the two control inputs (IN1-2 and IN3-4) are powered off and are at low level, the microphone is powered on, the camera is powered on, the microphone indicator light is powered off and is turned off, and the camera indicator light is powered off and is turned off; when the two control inputs (IN1-2 and IN3-4) are electrified to be high level, the microphone is powered off and closed, the camera is powered off and closed, the microphone indicator lamp is electrified and lighted, and the camera indicator lamp is electrified and lighted.
Another embodiment of the present invention, as shown in fig. 4, provides an apparatus 100 for cutting off power supply to a microphone and a camera, which is disposed on a communication terminal 200, wherein the apparatus 100 includes: a first analog switch 110 and a second analog switch 120;
the first analog switch 110 has a first output end 111, a second output end 112, a first control end 113, a first input end 114, a second input end 115, a third input end 116 and a fourth input end 117; when the first control terminal 113 receives a first level, the first output terminal 111 is communicated with the first input terminal 114, and the second output terminal 112 is communicated with the third input terminal 116; when the first control terminal 113 receives a second level, the first output terminal 111 is communicated with the second input terminal 115, and the second output terminal 112 is communicated with the fourth input terminal 117;
the second analog switch 120 has a third output terminal 121, a fourth output terminal 122, a second control terminal 123, a fifth input terminal 124, a sixth input terminal 125, a seventh input terminal 126, and an eighth input terminal 127; when the second control terminal 123 receives the first level, the third output terminal 121 is communicated with the fifth input terminal 124, and the fourth output terminal 122 is communicated with the seventh input terminal 126; when the second control terminal 123 receives the second level, the third output terminal 121 is communicated with the sixth input terminal 125, and the fourth output terminal 122 is communicated with the eighth input terminal 127;
the first output end 111 is connected to the microphone power supply end 131, the second output end 112 is connected to the camera power supply end 132, the first input end 114 is connected to the microphone power supply end 141, the second input end is suspended or coupled to GND, the third input end 116 is connected to the camera power supply end 142, and the fourth input end is suspended or coupled to GND;
the third output terminal 121 is connected to a microphone status indicator 151, the other end of the microphone status indicator 151 is coupled to GND, the fourth output terminal 122 is connected to a camera status indicator 152, the other end of the camera status indicator 152 is coupled to GND, the fifth input terminal 124 is suspended or coupled to GND, the sixth input terminal 125 is connected to an indicator power terminal 160, the seventh input terminal is suspended or coupled to GND, and the eighth input terminal 127 is connected to the indicator power terminal 160;
the first control terminal 113 and the second control terminal 123 input the same signal.
When the first control terminal 113 and the second control terminal 123 input the first level, the microphone power supply terminal 131 is connected to the microphone power supply terminal 141, the microphone can normally operate, the camera power supply terminal 132 is connected to the camera power supply terminal 142, the camera can normally operate, and meanwhile, the microphone status indicator lamp 151 and the camera status indicator lamp 152 are suspended or coupled to GND, and the two status lamps are not turned on. When the power supply of the microphone and the camera needs to be cut off, a second level is input into the first control terminal 113 and the second control terminal 123, the microphone power supply terminal 131 is suspended or connected with the GND, the camera power supply terminal 132 is suspended or connected with the GND, at this time, the power supply of the microphone and the camera is cut off, the microphone and the camera stops working, in order to prompt the user of the state that the power supply of the camera and the microphone is cut off, the microphone state indicator lamp 151 and the camera state indicator lamp 152 are connected with the indicator lamp power supply terminal 160, the microphone state indicator lamp 151 and the camera state indicator lamp 152 are turned on, and the user can clearly know that the power supply of the microphone and the camera is cut off. So as to switch the input signals of the first control terminal 113 and the second control terminal 123 when the switch-on is required.
To facilitate synchronous control, the first control terminal 113 and the second control terminal 123 are connected together and commonly receive a control signal. Of course, the control can be separated, and in this case, the indicator light can be multiplexed with other indicating functions.
In some embodiments, the first level is a low level and the second level is a high level. The low level may be 0V and the high level may be 3.3V or 5V. The selection can be made by one skilled in the art depending on the device.
In order to stabilize the signal input, the apparatus 100 further includes a level switch 171 and a pull-down resistor 172, wherein one end of the level switch 171 is connected to the control power terminal 173, the other end is connected to the first control terminal 113 and the second control terminal 123, the first control terminal 113 and the second control terminal 123 are further connected to the pull-down resistor 172, and the other end of the pull-down resistor 172 is connected to GND. When the level switch 171 is toggled or triggered to be connected, the first control terminal 113 and the second control terminal 123 input a high level, so that the power supply of the microphone and the camera is cut off, and the two status indicators are turned on; if it is not desired to disconnect the power supply, the power switch 171 is rendered non-conductive. So that the first control terminal 113 and the second control terminal 123 are stabilized at a low level.
In some embodiments, the first analog switch 110 and the second analog switch 120 employ a bidirectional four-channel single-pole double-throw analog switch. Can be integrated on a chip, thereby saving the occupied space.
In some embodiments, the control power terminal 173, the microphone power terminal 141, the camera power terminal 142 and the indicator light power terminal 160 are coupled to the battery 210 of the communication terminal 200, which is used to control the device 100.
For the convenience of user operation and without causing the device 100 to be triggered by mistake, the level switch 171 is disposed at a side edge of the communication terminal, and in some embodiments, the level switch 171 may be hidden inside the edge.
In some embodiments, the camera status indicator lamp 152 and the microphone status indicator lamp 151 are disposed at the bottom side edge of the communication terminal 200. The position of pilot lamp does not influence camera and microphone function, avoids the installation space of camera and microphone. In some embodiments, the indicator light may be embedded on the edge of the housing of the communication terminal 200.
Some embodiments of the present invention further provide a communication terminal 200, which includes the apparatus 100, where the communication terminal 200 may be a mobile phone, a tablet computer, a PDA, a smart watch, or a notebook computer. For components on other communication terminals than the apparatus 100, those skilled in the art can use conventional components to configure, for example, a processor, a display component, a power supply component, a memory, etc.; the connection mode can also adopt a conventional connection mode, for example, the data interface connection mode of the camera and the microphone is consistent with the data interface connection mode of the conventional communication terminal.
The first analog switch and the second analog switch in the embodiment of the invention can also adopt other analog switch chips.
The device and the terminal in the embodiment of the invention can conveniently and physically cut off the power supply functions of the microphone and the camera, can conveniently start power supply, are convenient for a user to conveniently and quickly enter a place and an environment with constraint requirements on the communication device (mobile phone), and can not violate regulations and miss important information and incoming calls because of not carrying the communication device (mobile phone) accurately.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a cut off device of microphone and camera power supply which characterized in that sets up on communication terminal, the device includes: a first analog switch and a second analog switch;
the first analog switch is provided with a first output end, a second output end, a first control end, a first input end, a second input end, a third input end and a fourth input end; when the first control end receives a first level, the first output end is communicated with the first input end, and the second output end is communicated with the third input end; when the first control end receives a second level, the first output end is communicated with the second input end, and the second output end is communicated with the fourth input end;
the second analog switch is provided with a third output end, a fourth output end, a second control end, a fifth input end, a sixth input end, a seventh input end and an eighth input end; when the second control end receives a first level, the third output end is communicated with the fifth input end, and the fourth output end is communicated with the seventh input end; when the second control end receives a second level, the third output end is communicated with the sixth input end, and the fourth output end is communicated with the eighth input end;
the first output end is connected with a microphone power supply end, the second output end is connected with a camera power supply end, the first input end is connected with a microphone power supply end, the second input end is suspended or coupled with GND, the third input end is connected with a camera power supply end, and the fourth input end is suspended or coupled with GND;
the third output end is connected with a microphone state indicator, the other end of the microphone state indicator is coupled with GND, the fourth output end is connected with a camera state indicator, the other end of the camera state indicator is coupled with GND, the fifth input end is suspended or coupled with GND, the sixth input end is connected with an indicator power supply end, the seventh input end is suspended or coupled with GND, and the eighth input end is connected with the indicator power supply end;
the first control end and the second control end input the same signal.
2. The apparatus of claim 1, wherein the first control terminal and the second control terminal are connected together to receive a control signal.
3. The device for cutting off power supply to the microphone and the camera according to claim 1 or 2, further comprising a level switch and a pull-down resistor, wherein one end of the level switch is connected to a control power supply end, the other end of the level switch is connected to the first control end and the second control end, the first control end and the second control end are further connected to the pull-down resistor, and the other end of the pull-down resistor is connected to GND.
4. The apparatus of claim 1 or 2, wherein the first analog switch and the second analog switch are bidirectional four-channel single-pole double-throw analog switches.
5. The apparatus according to claim 3, wherein the control power supply terminal, the microphone power supply terminal, the camera power supply terminal and the indicator light power supply terminal are coupled to a battery of the communication terminal.
6. The apparatus of claim 3, wherein the level switch is disposed at a side edge of the communication terminal.
7. The device for cutting off power supply to a microphone and a camera according to claim 1 or 2, wherein the camera status indicator light and the microphone status indicator light are disposed at the bottom side edge of the communication terminal.
8. The apparatus of claim 1 or 2, wherein the first level is a low level and the second level is a high level.
9. A communication terminal comprising an apparatus as claimed in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010834034.6A CN111866282B (en) | 2020-08-18 | 2020-08-18 | Device for cutting off power supply of microphone and camera and communication terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010834034.6A CN111866282B (en) | 2020-08-18 | 2020-08-18 | Device for cutting off power supply of microphone and camera and communication terminal |
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| CN111866282A true CN111866282A (en) | 2020-10-30 |
| CN111866282B CN111866282B (en) | 2024-02-13 |
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| CN113891022A (en) * | 2021-09-24 | 2022-01-04 | 惠州视维新技术有限公司 | Television and control method thereof |
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| CN111866282B (en) | 2024-02-13 |
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