CN111866282B - 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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- CN111866282B CN111866282B CN202010834034.6A CN202010834034A CN111866282B CN 111866282 B CN111866282 B CN 111866282B CN 202010834034 A CN202010834034 A CN 202010834034A CN 111866282 B CN111866282 B CN 111866282B
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- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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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 has first and second output terminals, a first control terminal, first, second, third and fourth input terminals; 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 the microphone power supply end, the second output end is connected with the camera power supply end, the first input end is connected with the microphone power supply end, and the third input end is connected with the camera power supply end; the third output end is connected with the microphone state indicator lamp, the fourth output end is connected with the camera state indicator lamp, the sixth input end is connected with the indicator lamp power end, and the eighth input end is connected with the indicator lamp power 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 cannot leave the mobile phone, various applications bring convenience to users and potential safety hazards, in many cases, users cannot know that the smart phones of the users are implanted with Trojan horse programs, the programs can steal and open microphones and the use permission of the cameras can open the microphones of the mobile phones to monitor surrounding sounds and the cameras steal and peep surrounding scenes, privacy and safety of the users are seriously affected, the use of the communication devices (mobile phones) is forbidden or limited in many places, most of reasons are because of secret related, such as important meetings, products which have no confidentiality requirements in the market are produced in factories, and no problem that the communication devices (mobile phones) have microphone ears and cause secret leakage is solved, so that the places are either forbidden to carry the communication devices (mobile phones) or the communication devices (mobile phones) are required to be adhered to the adhesive tape of the communication devices (mobile phones), so that the users cannot miss the communication devices (mobile phones) easily, for example, the devices are very convenient to miss. Or damages the lens of the communication device (mobile phone) in the adhesive tape pasting process. In combination with the above restrictions or damages to the communication device (mobile phone) in the usage environment, disabling the communication device (mobile phone) from carrying may miss important calls or messages.
Disclosure of Invention
In order to solve the problem of inconvenient mode of limiting the authority of the microphone and the camera, the invention provides a communication device with the function of physically cutting off the power supply of the microphone and the camera, which is convenient for a user to conveniently and quickly enter places and environments with constraint requirements on the communication device (mobile phone) without violating regulations or missing important information and incoming calls due to inaccurate carrying of the communication device (mobile phone). Specifically, the first aspect of the present invention provides a device for cutting off power supplied to a microphone and a camera, which is disposed on a communication terminal, and 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 the 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 the power supply end of the microphone, the second output end is connected with the power supply end of the camera, the first input end is connected with the power supply end of the microphone, the second input end is suspended or coupled with GND, the third input end is connected with the power supply end of the camera, and the fourth input end is suspended or coupled with GND;
the third output end is connected with a microphone state indicator lamp, the other end of the microphone state indicator lamp is coupled with GND, the fourth output end is connected with a camera state indicator lamp, the other end of the camera state indicator lamp is coupled with GND, the fifth input end is suspended or coupled with GND, the sixth input end is connected with an indicator lamp power supply end, the seventh input end is suspended or coupled with GND, and the eighth input end is connected with the indicator lamp power supply end;
the first control end and the second control end input the same signal.
Further, the first control end and the second control end are connected together to commonly receive the control signal.
Further, the power supply circuit further comprises a level switch and a pull-down resistor, one end of the level switch is connected with a control power supply end, the other end of the level switch is connected with the first control end and the second control end, the first control end and the second control end are further connected with the pull-down resistor, and the other end of the pull-down resistor is connected with GND.
Further, the first analog switch and the second analog switch are bidirectional four-way single-pole double-throw analog switches.
Further, the control power end, the microphone power end, the camera power end and the indicator light power end are coupled with a battery of the communication terminal.
Further, the level switch is arranged at the side edge of the communication terminal.
Further, the camera status indicator lamp and the microphone status indicator lamp are disposed at the bottom side edge 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 function of the microphone and the camera, can conveniently start the power supply, and are convenient and quick for a user to enter places and environments with constraint requirements on the communication device (mobile phone), so that important information and incoming calls are not missed due to the fact that the communication device (mobile phone) is not in violation of regulations or is not carried 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 should not be construed as limiting the invention in any way, in which:
FIG. 1 is a schematic diagram of the overall circuit of a power cut-off device according to some embodiments of the present invention;
FIG. 2 is a schematic diagram illustrating the pins of a power cut-off device according to some embodiments of the present invention;
FIG. 3 is a schematic diagram showing a function of the power cut-off device according to the present invention;
fig. 4 is a schematic circuit diagram of an apparatus for cutting off power to a microphone and a camera according to some embodiments of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
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 described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The embodiment of the invention provides a power supply cutting device, which directly cuts off power supply of a microphone and a camera by using a physical switch to act on a hardware circuit, so that the microphone and the camera of a communication device (mobile phone) are thoroughly prohibited from working, the rapid, safe and thorough physical isolation is achieved, the microphone and the camera are prevented from working, and meanwhile, a green safety indicator lamp for stopping power of the microphone and the camera is also arranged, so that a user is reminded that the microphone and the camera of the communication device (mobile phone) of the user enter a power-off prohibition working state.
Specifically, referring to FIG. 1, the implementation is performed using two bi-directional 4-channel Single Pole Double Throw (SPDT) analog switches having two control inputs (IN 1-2 and IN 3-4) with an operating voltage from 1.8V to 5.5V. This analog switch is also known as a 2-channel Double Pole Double Throw (DPDT) configuration. This analog switch can process analog and digital signals. It is characterized by a bandwidth (30 MHz) and a low-pass resistance (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 (IN 1-2 and IN 3-4) are directly arranged as physical switches, the power is on at a high level, the power is not on at a 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 and low levels. As shown in fig. 2, the pin names, pin descriptions, and connection devices and signal descriptions are explained. As shown IN fig. 2, the two control inputs (IN 1-2 and IN 3-4) are directly set to be a physical switch, the power is on to be high level, the power is not on to be low level, the device pins 1234 are respectively connected with the power supply pins of four devices of a microphone, a camera, a microphone indicator and a camera indicator, and the power supply working states of the four devices of the microphone, the camera, the microphone indicator and the camera indicator are set by the direct switching states of the device pins 1234, the normally open pins 1234 and the long closed pins 1234. As shown in fig. 3, the states and corresponding functions of the control pin inputs 1-2,3-4 are shown. When the power-off of the two control inputs (IN 1-2 and IN 3-4) is low, the microphone is powered on, the camera is powered on, the microphone indicator is powered off and turned off, and the camera indicator is powered off and turned off; when the two control inputs (IN 1-2 and IN 3-4) are electrified to be high level, the microphone is powered off and closed, the camera is powered off and closed, the microphone indicator is electrified and lighted, and the camera indicator is electrified and lighted.
In another embodiment of the present invention, as shown in fig. 4, there is provided a device 100 for cutting off power to a microphone and a camera, the device 100 being disposed on a communication terminal 200, the device 100 comprising: a first analog switch 110 and a second analog switch 120;
the first analog switch 110 has a first output 111, a second output 112, a first control 113, a first input 114, a second input 115, a third input 116, and a fourth input 117; when the first control terminal 113 receives the first level, the first output terminal 111 is in communication with the first input terminal 114, and the second output terminal 112 is in communication with the third input terminal 116; when the first control terminal 113 receives a second level, the first output terminal 111 communicates with the second input terminal 115, and the second output terminal 112 communicates with the fourth input terminal 117;
the second analog switch 120 has a third output 121, a fourth output 122, a second control 123, a fifth input 124, a sixth input 125, a seventh input 126, and an eighth input 127; when the second control terminal 123 receives the first level, the third output terminal 121 is in communication with the fifth input terminal 124, and the fourth output terminal 122 is in communication with the seventh input terminal 126; when the second control terminal 123 receives the second level, the third output terminal 121 is in communication with the sixth input terminal 125, and the fourth output terminal 122 is in communication with the eighth input terminal 127;
the first output end 111 is connected with the microphone power supply end 131, the second output end 112 is connected with the camera power supply end 132, the first input end 114 is connected with the microphone power supply end 141, the second input end is suspended or coupled with GND, the third input end 116 is connected with the camera power supply end 142, and the fourth input end is suspended or coupled with GND;
the third output end 121 is connected to the microphone status indicator 151, the other end of the microphone status indicator 151 is coupled to GND, the fourth output end 122 is connected to the camera status indicator 152, the other end of the camera status indicator 152 is coupled to GND, the fifth input end 124 is suspended or coupled to GND, the sixth input end 125 is connected to the indicator power end 160, the seventh input end is suspended or coupled to GND, and the eighth input end 127 is connected to the indicator power end 160;
the first control terminal 113 and the second control terminal 123 input the same signal.
When the first control end 113 and the second control end 123 input the first level, the microphone power supply end 131 and the microphone power supply end 141 are communicated, the microphone can work normally, the camera power supply end 132 and the camera power supply end 142 are communicated, and the camera can work normally, and meanwhile, the microphone status indicator lamp 151 and the camera status indicator lamp 152 are suspended or coupled with the GND, and the two status lamps are not lighted. When the power supply of the microphone and the camera needs to be cut off, a second level is input to the first control end 113 and the second control end 123, the microphone power supply end 131 is suspended or connected with GND, the camera power supply end 132 is suspended or connected with GND, at this time, the microphone and the camera are powered off, the operation is stopped, in order to prompt the user of the state that the microphone and the camera are powered off, the microphone status indicator lamp 151 and the camera status indicator lamp 152 are connected with the indicator lamp power end 160, the microphone status indicator lamp 151 and the camera status indicator lamp 152 are lighted, and the user can clearly know that the microphone and the camera are powered off. So that the input signals of said first control terminal 113 and said second control terminal 123 are switched when opening is required.
To facilitate synchronous control, the first control terminal 113 and the second control terminal 123 are connected together to commonly receive a control signal. Of course, the control can also be separately performed, and the indicator light can be multiplexed to 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. One skilled in the art can choose from devices.
In order to stabilize signal input, the device 100 further includes a level switch 171 and a pull-down resistor 172, wherein one end of the level switch 171 is connected to a control power supply 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 communicated, the first control end 113 and the second control end 123 input a high level, so that power supply of the microphone and the camera can be disconnected, and two status indicator lamps are lightened; if it is not desired to turn off the power supply, the level 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 two-way four-channel single pole double throw analog switch. Can be integrated on a chip, and saves occupied space.
In some embodiments, the control power source 173, the microphone power source 141, the camera power source 142 and the indicator light power source 160 are coupled to the battery 210 of the communication terminal 200, and the power source of the communication terminal is used to control the apparatus 100.
In order to facilitate the user operation and not to cause 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 light 152 and the microphone status indicator light 151 are disposed at a bottom side edge of the communication terminal 200. The position of the indicator lamp does not influence the functions of the camera and the microphone, and avoids the installation space of the camera and the microphone. In some embodiments, the indicator light may be embedded in the housing edge of the communication terminal 200.
In some embodiments of the present invention, a communication terminal 200 is further provided, including the above device 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 above-described device 100, those skilled in the art may use conventional components, for example, a processor, a display component, a power supply component, a memory, etc. are included; the connection mode can also adopt a conventional connection mode, for example, the data interface connection mode of a camera and a microphone is consistent with the data interface connection mode of a 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 function of the microphone and the camera, can conveniently start the power supply, and are convenient and quick for a user to enter places and environments with constraint requirements on the communication device (mobile phone), so that important information and incoming calls are not missed due to the fact that the communication device (mobile phone) is not in violation of regulations or is not carried accurately.
In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A device for cutting off power supplied to a microphone and a camera, the device being disposed on a communication terminal, the device comprising: 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 the 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 the power supply end of the microphone, the second output end is connected with the power supply end of the camera, the first input end is connected with the power supply end of the microphone, the second input end is suspended or coupled with GND, the third input end is connected with the power supply end of the camera, and the fourth input end is suspended or coupled with GND;
the third output end is connected with a microphone state indicator lamp, the other end of the microphone state indicator lamp is coupled with GND, the fourth output end is connected with a camera state indicator lamp, the other end of the camera state indicator lamp is coupled with GND, the fifth input end is suspended or coupled with GND, the sixth input end is connected with an indicator lamp power supply end, the seventh input end is suspended or coupled with GND, and the eighth input end is connected with the indicator lamp power supply end;
the first control end and the second control end input the same signals;
wherein the apparatus further comprises: the power supply device comprises a level switch and a pull-down resistor, wherein one end of the level switch is connected with a control power supply end, the other end of the level switch is connected with a first control end and a second control end, the first control end and the second control end are also connected with the pull-down resistor, and the other end of the pull-down resistor is connected with GND; when the level switch is conducted, the first control end and the second control end input a second level, and when the level switch is not conducted, the first control end and the second control end input a first level; the first level is a low level and the second level is a high level.
2. The apparatus for switching off power to a microphone and a camera of claim 1, wherein the first control terminal and the second control terminal are coupled together to receive the control signal together.
3. The apparatus for switching off power to a microphone and a camera according to claim 1 or 2, wherein the first analog switch and the second analog switch are two-way four-way single pole double throw analog switches.
4. The apparatus of claim 1, wherein the control power terminal, the microphone power terminal, the camera power terminal, and the indicator light power terminal are coupled to a battery of the communication terminal.
5. The apparatus for cutting off power to a microphone and a camera according to claim 1, wherein the level switch is provided at a side edge of the communication terminal.
6. The apparatus for cutting off power to a microphone and a camera according to claim 1 or 2, wherein the camera status indicator lamp and the microphone status indicator lamp are provided at a bottom side edge of the communication terminal.
7. A communication terminal comprising an apparatus as claimed in any one of claims 1 to 6.
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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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| 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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| CN111866282B true CN111866282B (en) | 2024-02-13 |
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| CN113206914A (en) * | 2021-04-16 | 2021-08-03 | 希姆通信息技术（上海）有限公司 | Method for realizing anti-eavesdropping and video recording by hardware circuit design |
| 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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