CN211151935U - Hardware switching circuit and terminal equipment - Google Patents
Hardware switching circuit and terminal equipment Download PDFInfo
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- CN211151935U CN211151935U CN202020000755.2U CN202020000755U CN211151935U CN 211151935 U CN211151935 U CN 211151935U CN 202020000755 U CN202020000755 U CN 202020000755U CN 211151935 U CN211151935 U CN 211151935U
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Abstract
The utility model relates to a hardware switch circuit and terminal equipment, the hardware switch circuit comprises a switch key, a switch switching circuit, a switch driving circuit, an application component and a switch key interface circuit connected with the switch key; the switch key interface circuit sends a switch signal to the switch switching circuit according to the operation of a user on a switch key; the switch switching circuit sends a driving signal to the switch driving circuit according to the switch signal; the switch driving circuit controls the application component to be switched on and off according to the driving signal. The user can utilize the switch button to control opening and closing of application component (camera and recorder), when opening camera procedure and recording procedure through the mode of soft start, still need press the switch button, opens through hardware switch circuit drive application component, just can start shooting and recording function. By adopting the technical scheme, the hardware switch circuit is added on the basis of soft start, so that the confidentiality and the safety of the terminal equipment are improved.
Description
Technical Field
The utility model relates to a hardware switch technical field, concretely relates to hardware switch circuit and terminal equipment.
Background
Along with the progress of science and technology, all possessed the function of shooing, making a video recording and recording among the terminal equipment, generally be through the function that camera APP realized shooing and make a video recording, realize the recording function through audio recorder APP.
In the current terminal device, shooting and recording are usually performed in a soft start mode, that is, a camera is started by opening a camera program, and a recording function is started by opening a recording program. However, when the system of the terminal device encounters hacker attack, a hacker can automatically turn on the camera and the recorder, thereby causing serious threat to personal privacy and reducing the confidentiality and the application security of the terminal device.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a hardware switch circuit and terminal equipment, aim at overcome among the prior art terminal equipment's security and the lower not enough of applied security.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a hardware switching circuit, comprising: the switch comprises a switch key, a switch switching circuit, a switch driving circuit, an application component and a switch key interface circuit connected with the switch key;
the switch key interface circuit is connected with the switch switching circuit;
the switch switching circuit is connected with the switch driving circuit;
the switch driving circuit is connected with the application component;
the switch driving circuit is connected with a control chip of the equipment where the hardware switch circuit is located;
the switch key interface circuit is used for sending a switch signal to the switch switching circuit according to the operation of a user on a switch key;
the switch switching circuit is used for sending a driving signal to the switch driving circuit according to the switch signal;
the switch driving circuit is used for controlling the opening and closing of the application component according to the driving signal.
Further, in the above hardware switch circuit, the switch driving circuit includes: a shooting switch driving circuit and a recording switch driving circuit;
the application component comprises: a camera and a recording assembly;
the shooting switch driving circuit and the recording switch driving circuit are respectively connected with the switch switching circuit;
the shooting switch driving circuit is respectively connected with the camera and the control chip;
the recording switch driving circuit is connected with the recording component.
Further, in the hardware switch circuit, the recording switch driving circuit includes: the on-off control circuit and the data transmission circuit;
the data transmission circuit and the switch switching circuit are respectively connected with the on-off control circuit;
the data transmission circuit and the control chip are respectively connected with the recording component.
Further, in the hardware switch circuit, the switch key interface circuit includes: the device comprises a first interface, a first magnetic bead, a first capacitor and a second capacitor;
the first end of the first interface is respectively connected with the first end of the first magnetic bead and the first end of the first capacitor;
the second end of the first magnetic bead is connected with the first end of the second capacitor and the power supply respectively;
the second end of the first interface is connected with the switch key;
the second end of the first capacitor, the second end of the second capacitor, the third end of the first interface, the fourth end of the first interface and the fifth end of the first interface are all grounded.
Further, in the hardware switching circuit described above, the switching circuit includes: the TVS comprises a first chip, a first resistor, a second resistor, a third capacitor, a fourth capacitor and a first transient suppression TVS diode;
the output end of the first interface is connected with the first end of the first resistor;
the first end of the second resistor, the first end of the first TVS diode, the second end of the first resistor and the first end of the third capacitor are respectively connected with the second end of the first chip;
the second end of the second resistor and the first end of the third resistor are respectively connected with the first end of the first chip;
the second end of the third resistor is connected with the fourth end of the first chip;
the first end of the fourth capacitor and the power supply are respectively connected with the fifth end of the first chip;
and the third end of the first chip, the second end of the third capacitor and the second end of the fourth capacitor are all grounded.
Further, in the hardware switch circuit described above, the shooting switch driving circuit includes: the second chip, a fourth resistor, a fifth resistor, a sixth resistor, a fifth capacitor, a sixth capacitor and a first metal oxide semiconductor field effect transistor (MOS) tube;
the first end of the second chip is connected with the first end of the fifth capacitor and the power supply respectively;
the first end of the fourth resistor, the first end of the fifth resistor and the first end of the first MOS tube are respectively connected with the second end of the second chip;
the second end of the fourth resistor is connected with the control chip;
the second end of the first MOS tube is connected with the fourth end of the first chip;
the third end of the second chip is connected with the first end of the sixth resistor;
a fifth end of the second chip is respectively connected with the camera and a first end of the sixth capacitor;
the second end of the fifth resistor, the second end of the fifth capacitor, the third end of the first MOS tube, the fourth end of the second chip, the second end of the sixth resistor and the second end of the sixth capacitor are all grounded.
Further, in the above hardware switch circuit, the on-off control circuit includes: the third chip, a seventh resistor, a seventh capacitor and a second MOS tube;
the first end of the third chip is respectively connected with the fourth end of the first chip and the second end of the second MOS tube;
the first end of the second MOS tube is connected with the first end of the seventh resistor;
the second end of the seventh resistor is connected with the output end of the first interface;
the second end of the third chip is respectively connected with the first end of the seventh capacitor and the power supply;
the third end of the third chip and the fourth end of the third chip are respectively connected with the data transmission circuit;
and a fifth end of the third chip, a second end of the seventh capacitor and a third end of the second MOS tube are all grounded.
Further, in the hardware switch circuit, the recording module includes: the audio recording interface and the audio processing chip are connected with the audio processing chip;
the recording interface and the audio processing chip are respectively connected with the data transmission circuit;
the audio processing chip is connected with the control chip.
Further, in the hardware switching circuit, the data transmission circuit includes: an eighth resistor, a ninth resistor, a tenth resistor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a second TVS diode, a third TVS diode, a fourth TVS diode, and a fifth TVS diode;
the first end of the eighth resistor, the first end of the eighth capacitor and the first end of the ninth capacitor are respectively connected with the third end of the third chip;
the first end of the ninth resistor is connected with the fourth end of the third chip;
a second end of the ninth resistor, a first end of the tenth capacitor, a first end of the eleventh capacitor, a first end of the thirteenth capacitor, a first end of the second TVS diode, and a first end of the third TVS diode are respectively connected to a first end of the recording interface;
a second end of the eleventh capacitor, a first end of the twelfth capacitor, a first end of the fourth TVS diode, a first end of the fourteenth capacitor, a first end of the tenth resistor, and a first end of the fifth TVS diode are respectively connected to a second end of the recording interface;
a second end of the eighth resistor, a second end of the thirteenth capacitor and a second end of the fourteenth capacitor are respectively connected with the audio processing chip;
a second end of the eighth capacitor, a second end of the ninth capacitor, a second end of the tenth capacitor, a second end of the twelfth capacitor, a second end of the tenth resistor, a second end of the second TVS diode, a second end of the third TVS diode, a second end of the fourth TVS diode, a second end of the fifth TVS diode, a third end of the recording interface, and a fourth end of the recording interface are all grounded.
The utility model also provides a terminal equipment, include: the device comprises a device main body, a control chip and the hardware switch circuit;
the control chip and the hardware switch circuit are both arranged on the equipment main body;
the control chip is connected with the hardware switch circuit.
The utility model discloses a hardware switch circuit and terminal equipment, including switch button, switch switching circuit, switch drive circuit, application component and the switch button interface circuit who links to each other with the switch button; the switch key interface circuit is used for sending a switch signal to the switch switching circuit according to the operation of a user on the switch key and is connected with the switch switching circuit; the switch switching circuit is used for sending a driving signal to the switch driving circuit according to the switch signal and is connected with the switch driving circuit; and the switch driving circuit is used for controlling the opening and closing of the application component according to the driving signal and is connected with the application component. Therefore, a user can control the opening and closing of the application components (the camera and the recorder) by utilizing the switch keys, the switch keys are required to be pressed when the camera program and the recording program are opened in a soft starting mode, and the shooting and recording functions can be started only by driving the camera and the recorder to be opened through the hardware switch circuit. By adopting the technical scheme, the hardware switch circuit is added on the basis of soft start, so that the confidentiality and the application safety of the terminal equipment are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and for those skilled in the art, other drawings can be obtained without creative efforts.
Fig. 1 is a circuit block diagram of a first embodiment of the hardware switching circuit of the present invention;
fig. 2 is a circuit block diagram of a second embodiment of the hardware switching circuit of the present invention;
FIG. 3 is a circuit diagram of the switch key interface circuit of FIG. 2;
FIG. 4 is a circuit diagram of the switch switching circuit of FIG. 2;
fig. 5 is a circuit diagram of the photographing switch driving circuit in fig. 2;
FIG. 6 is a circuit diagram of the on-off control circuit of FIG. 2;
FIG. 7 is a circuit diagram of the data transmission circuit of FIG. 2;
fig. 8 is a circuit block diagram of an embodiment of the terminal device of the present invention.
Detailed Description
To make the objects, aspects and advantages of the present invention clearer, exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a circuit block diagram of a first embodiment of the hardware switching circuit of the present invention, as shown in fig. 1, the hardware switching circuit of this embodiment includes: switch keys 101, a switch key interface circuit 102, a switch switching circuit 103, a switch driving circuit 104, and an application component 105. The switch key 101 and the switch switching circuit 103 are respectively connected with the switch key interface circuit 102; the switch switching circuit 103, the application component 105 and the control chip 20 of the device in which the hardware switch circuit is located are respectively connected to the switch driving circuit 104.
In this embodiment, a user operates the switch button 101, and sends a switch signal to the switch switching circuit 103 through the switch button interface circuit 102, and the switch switching circuit 103 sends a driving signal to the switch driving circuit 104 according to the switch signal, so that the switch driving circuit 104 controls the application component 105 to be turned on and off. The user can open the application component by the soft start mode, then press the switch button 101, open the application component 105 by the hardware switch circuit of this embodiment, and the application component 105 can be successfully opened only by combining the two modes, so that the hardware switch circuit can be added on the basis of the soft start, and the confidentiality and the application safety of the terminal device using the hardware switch circuit are improved.
The hardware switch circuit of the embodiment includes a switch button 101, a switch switching circuit 103, a switch driving circuit 104, an application component 105, and a switch button interface circuit 102 connected to the switch button 101; the switch key interface circuit 102 transmits a switch signal to the switch switching circuit 103 according to an operation of the switch key 101 by a user; the switch switching circuit 103 sends a drive signal to the switch drive circuit 104 according to the switch signal; the switch driving circuit 104 controls the application device 105 to be turned on or off according to the driving signal. In this way, the user can utilize the switch button 101 to control the on and off of the application component 105 (camera and recorder), and when the camera program and the recording program are opened in a soft start mode, the user also needs to press the switch button 101, and the camera and the recorder are driven to be opened through the hardware switch circuit, so as to start the shooting and recording functions. By adopting the technical scheme, the hardware switch circuit is added on the basis of soft start, so that the confidentiality and the application safety of the terminal equipment are improved.
Fig. 2 is a circuit block diagram of a second embodiment of the hardware switch circuit of the present invention, and as shown in fig. 2, the hardware switch circuit of this embodiment is further described in more detail on the basis of the above embodiments.
As shown in fig. 2, in the hardware switching circuit of the present embodiment, the switch driving circuit 104 includes: a shooting switch drive circuit 1041 and a recording switch drive circuit 1042; the recording switch driving circuit 1042 includes: an on-off control circuit 10421 and a data transmission circuit 10422; the application component 105 includes: a camera 1051 and a recording assembly 1052; the sound recording assembly 1052 includes: recording interface and audio frequency processing chip. The shooting switch driving circuit 1041 and the on-off control circuit 10421 are respectively connected with the switch switching circuit 103; the on-off control circuit 10421, the control chip 20, the recording interface and the audio processing chip are respectively connected with the data transmission circuit 10422; the audio processing chip is connected with the control chip 20; the camera 1051 and the control chip 20 are connected to the shooting switch drive circuit 1041, respectively.
When a user needs to apply a shooting function on a terminal device, after the switch key 101 is pressed, a switch signal is sent to the switch switching circuit 103 through the switch key interface circuit 102, the switch switching circuit 103 sends a start-up driving signal to the shooting switch driving circuit 1041 according to the switch signal, and simultaneously, the camera is started through soft start (namely, the control chip 20 sends a soft start signal to the shooting switch driving circuit 1041), so that the shooting switch driving circuit 1041 receives the soft start signal sent by the control chip 20, the shooting switch driving circuit 1041 controls the camera 1051 to be started according to the driving signal and the soft start signal, when the shooting function is closed, after the switch key 101 is pressed down again, the switch signal is sent to the switch switching circuit 103 again through the switch key interface circuit 102, so that the switch switching circuit 103 sends a close driving signal to the shooting switch driving circuit 1041, thereby controlling the camera 1051 to turn off.
When a user needs to apply a recording function on the terminal device, after the switch button 101 is pressed, a switch signal is sent to the switch switching circuit 103 through the switch button interface circuit 102, the switch switching circuit 103 sends an on-off driving signal to the on-off control circuit 10421 according to the switch signal, the on-off control circuit 10421 controls the data transmission circuit 10422 to be conducted, the data transmission circuit 10422 can transmit voice recorded by the user through the recording interface to the audio processing chip, and simultaneously, the recording function is started through soft start (that is, the control chip 20 sends a soft start signal to the audio processing chip), so that the audio processing chip can process and store the voice recorded by the user after receiving the soft start signal sent by the control chip 20. When the recording function is turned off, after the switch button 101 is pressed again, the switch signal is sent to the switch switching circuit 103 again through the switch button interface circuit 102, so that the switch switching circuit 103 sends a turned-off driving signal to the on-off control circuit 10421, thereby controlling the data transmission circuit 10422 to be turned off, and the transmission of the voice recorded by the user can be stopped, so as to stop the application of the recording function.
In the hardware switch circuit of the present embodiment, the switch key interface circuit 102 sends a switch signal to the switch switching circuit 103 according to the operation of the switch key 101 by the user; the switch switching circuit 103 sends a driving signal to the shooting switch driving circuit 1041 or the on-off control circuit 10421 according to the switch signal, so that the shooting switch driving circuit 10414 controls the camera 1051 to be turned on and off according to the driving signal, or the on-off control circuit 10421 controls the data transmission circuit 10422 for transmitting data transmission between the recording interface and the audio processing chip to be turned on or off, so as to control the recording function to be turned on and off. In this way, the user can use the switch button 101 to control the on/off of the application component 105 (the camera 1051 and the recorder), and when the camera program and the recording program are turned on in a soft-start manner, the user needs to press the switch button 101 to drive the camera 1051 and the recorder to be turned on through the hardware switch circuit, so as to start the shooting and recording functions. By adopting the technical scheme, the hardware switch circuit is added on the basis of soft start, so that the confidentiality and the application safety of the terminal equipment are improved.
Fig. 3 is a circuit diagram of the switch KEY interface circuit IN fig. 2, and as shown IN fig. 3, the switch KEY interface circuit 102 includes a first interface CON1, a first magnetic bead FB1, a first capacitor C1 and a second capacitor C2., wherein a first terminal of the first interface CON1 (i.e., a first pin of the first interface CON 1) is connected to a first terminal of the first magnetic bead FB1 and a first terminal of the first capacitor C1, respectively, a second terminal of the first magnetic bead FB1 and a first terminal of the second capacitor C2 are connected to a POWER supply, wherein VCC _ SYS is an accessed interface POWER supply, a second terminal of the first interface CON1 (i.e., a fifth pin of the first interface CON 1) is connected to the switch KEY 101 for transmitting a switching signal according to a user operation of the switch KEY 101, a second terminal of the first capacitor C1, a second terminal of the second capacitor C2, a third terminal of the first interface CON1 (i.e., a tenth pin 1 of the first interface CON), a second terminal of the second capacitor C847, a second terminal of the first interface CON1, a fifth terminal 1, a terminal for filtering signal indicative of a terminal for filtering, a terminal of a terminal for filtering signal indicative of a terminal of a.
Fig. 4 is a circuit diagram of the switch switching circuit in fig. 2, and as shown in fig. 4, the switch switching circuit 103 includes: a first chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a third capacitor C3 and a fourth capacitorThe output terminal of the first interface CON1 is connected to the first terminal of the first resistor R1, the first terminal of the second resistor R2, the first terminal of the first TVS diode D1, the second terminal of the first resistor R1, and the first terminal of the third capacitor C3 are respectively connected to the second terminal of the first chip U1 (i.e., the pin C L K of the first chip U1), the second terminal of the second resistor R2 and the first terminal of the third resistor R3 are respectively connected to the first terminal of the first chip U1 (i.e., the pin D of the first chip U1), and the second terminal of the third resistor R3 is connected to the fourth terminal of the first chip U1 (i.e., the pin D of the first chip U1)
Pins) are connected; a first terminal of the fourth capacitor C4 and a power supply (e.g., VCC _ IO in the figure) are respectively connected to a fifth terminal of the first chip U1 (i.e., VCC pin of the first chip U1); the third terminal of the first chip U1, the second terminal of the third capacitor C3, and the second terminal of the fourth capacitor C4 are all grounded. The MUTE _ KEY _ IN fig. 4 is a switching signal sent from the output terminal of the first interface CON 1.
In this embodiment, the first chip U1 preferably uses a D flip-flop, the model is preferably SN 74L VC1G80DCK, and the SN 74L VC1G80DCK chip is one of the flip-flops, and when the rising edge arrives, the input end D and the output end D
The electronic self-locking switch designed through the D trigger can enable the D trigger to be turned over once when a switch key 101 is pressed, and simultaneously utilizes the characteristic of SN 74L V1G80DCK, a circuit still keeps the self-locking state after the key is loosened
0, when the signal is inverted temporarily (by pressing the switch button 101) due to the rising pulse, the pin of the first chip U1
Is 1, remains IN this state when no new rising edge arrives (i.e., the switch button 101 is not pressed again), at which time the MUTE _ CTR L remains high, outputting an ON drive signal, until the next rising edge of MUTE _ KEY _ IN arrives (i.e., the switch button 101 is pressed again), pin U1 of the first chip U1
To the 0 state, the MUTE _ CTR L outputs a low level, i.e., outputs a drive signal that is turned off.
Fig. 5 is a circuit diagram of the photographing switch driving circuit in fig. 2, and as shown in fig. 5, the photographing switch driving circuit 1041 of the present embodiment includes: the circuit comprises a second chip U2, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a fifth capacitor C5, a sixth capacitor C6 and a first MOS transistor Q1. The first terminal of the second chip U2 (i.e., the VIN pin of the second chip U2) is connected to the first terminal of the fifth capacitor C5 and a power supply (e.g., VCC5V0_ EXT in the figure); the first terminal of the fourth resistor R4, the first terminal of the fifth resistor R5 and the first terminal of the first MOS transistor Q1 are respectively connected to the second terminal of the second chip U2 (i.e., the second chip U2 terminal)
Pins) are connected; a second terminal of the fourth resistor R4 is connected to the control chip 20,
a soft start signal transmitted for the control chip 20; the second terminal of the first MOS transistor Q1 and the fourth terminal of the first chip U1 (i.e., of the first chip U1)
Pins) for receiving a first chip U1
A driving signal (a high level signal or a low level signal) sent by the pin, wherein the high level signal is an on driving signal, and the low level signal is an off driving signal; third end of the second chip U2 (i.e., the second chip)I L IM pin of the chip U2) is connected to a first terminal of a sixth resistor R6, a fifth terminal of the second chip U2 (i.e., VOUT pin of the second chip U2) is connected to a first terminal of a camera 1051 and a first terminal of a sixth capacitor C6, respectively, wherein VUSB _ CAM is a signal for controlling the camera 1051 to turn on or off, a second terminal of a fifth resistor R5, a second terminal of a fifth capacitor C5, a third terminal of the first MOS transistor Q1, a fourth terminal of the second chip U2 (i.e., GND pin of the second chip U2), a second terminal of the sixth resistor R6, and a second terminal of the sixth capacitor C6 are all grounded, wherein a capacitance value of the fifth capacitor C5 is preferably 4.7uF, which is a filter capacitor of an input power supply, and a capacitance value of the sixth capacitor C6 is preferably 100nF, which is a filter capacitor of an output power supply.
Fig. 6 is a circuit diagram of the on-off control circuit in fig. 2, and as shown in fig. 6, the on-off control circuit 10421 of the present embodiment includes: a third chip U3, a seventh resistor R7, a seventh capacitor C7 and a second MOS transistor Q2. The first terminal of the third chip U3 (i.e., the IN pin of the third chip U3) and the fourth terminal of the first chip U1 (i.e., the IN pin of the first chip U1) are connected to the first terminal of the first chip U1
Pin) is connected with a second end of the second MOS transistor Q2; a first end of the second MOS transistor Q2 is connected with a first end of a seventh resistor R7; a second end of the seventh resistor R7 is connected to an output end of the first interface CON 1; a second terminal of the third chip U3 (i.e., the VCC pin of the third chip U3) is respectively connected to a first terminal of the seventh capacitor C7 and a power supply, wherein the power supply is VCC _ IO; a third terminal (i.e., a COM pin of the third chip U3) of the third chip U3 and a fourth terminal (i.e., an NC pin of the third chip U3) of the third chip U3 are respectively connected to the data transmission circuit 10422; the fifth terminal of the third chip U3 (i.e., the GND pin of the third chip U3), the second terminal of the seventh capacitor C7, and the third terminal of the second MOS transistor Q2 are all grounded.
Fig. 7 is a circuit diagram of the data transmission circuit in fig. 2, as shown in fig. 7, the data transmission circuit 10422 in this embodiment includes an eighth resistor R, a ninth resistor R, a tenth resistor R, an eighth capacitor C, a ninth capacitor C, a tenth capacitor C, an eleventh capacitor C, a twelfth capacitor C, a thirteenth capacitor C, a fourteenth capacitor C, a second TVS diode D, a third TVS diode D, a fourth TVS diode D and a fifth TVS diode, wherein a first end of the eighth resistor R, a first end of the eighth capacitor C and a first end of the ninth capacitor C are respectively connected to a third end of the third chip U (i.e., a pin of the third chip U), a first end of the ninth resistor R is connected to a fourth end of the third chip U (i.e., a pin of the NC of the third chip U), a second end of the ninth resistor R, a first end of the tenth capacitor C, a first end of the eleventh capacitor C, a first end of the thirteenth capacitor C, a second end of the second capacitor D and a second end of the ninth capacitor C are respectively connected to a ground, a recording interface of the twelfth diode C, a recording interface of the recording diode C, a recording interface of the twelfth diode C, a recording diode C, a fifth diode CON, a fifth diode CON, a fifth diode, a fifth.
The control chip 20 in this embodiment preferably uses an RK3288 processor, the RK3288 processor has an L CD display screen, and can run an Android operating system, the RK3288 is a low-power, high-performance processor, and is suitable for digital multimedia applications such as mobile phones and personal mobile internet devices, and integrates a four-core Cortex-a17 processor.
The camera 1051 in this embodiment adopts a CMOS light sensor, 1200 ten thousand pixels, and uses an electronic shutter technology, which can capture a dynamic image quickly. The interface is USB2.0 compatible USB3.0 drive-free installation, and document scanning adopts document scanning algorithms such as intelligent deviation correction and accurate edge removal, foreign object interference prevention, stamp restoration, missing corner restoration and the like. The certificate scanning adopts an intelligent certificate correction algorithm, so that a user can be helped to prevent the certificate at will when the certificate is scanned, and the final image is a forward image no matter whether the certificate is placed in a positive way or in a reverse way; the technology of combining the front image and the back image of the certificate into one image is supported, and the method is particularly suitable for signature application of multifunctional input and output equipment and the like.
In order to be more comprehensive, correspond to the embodiment of the utility model provides a hardware switch circuit, this application still provides terminal equipment.
Fig. 8 is a circuit block diagram of an embodiment of the terminal device of the present invention, and as shown in fig. 8, the terminal device of the present embodiment includes a device main body, a control chip 20 and the hardware switch circuit 10 described in the above embodiment. Wherein, the control chip 20 and the hardware switch circuit 10 are both arranged on the device main body; the control chip 20 is connected to the hardware switching circuit 10. The hardware switch circuit 10 is arranged on the main body of the terminal equipment, so that the hardware switch circuit 10 can be added on the basis of soft start of the shooting and recording functions of the terminal equipment, and the confidentiality and the application safety of the terminal equipment are improved.
In the terminal device of the present embodiment, the control chip 20 and the hardware switch circuit 10 are all disposed on the device main body; the control chip 20 is connected to the hardware switching circuit 10. In this way, the user can utilize the switch button 101 in the hardware switch circuit 10 to control the on/off of the application component 105 (the camera 1051 and the recorder), and when the camera program and the recording program are turned on by the control chip 20 in a soft-start manner, the user needs to press the switch button 101, and the camera 1051 and the recorder are driven to be turned on by the hardware switch circuit 10 to start the shooting and recording functions. By adopting the technical scheme, the hardware switch circuit 10 is added on the basis of soft start through the control chip 20, so that the confidentiality and the application safety of the terminal equipment are improved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means at least two unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A hardware switching circuit, comprising: the switch comprises a switch key, a switch switching circuit, a switch driving circuit, an application component and a switch key interface circuit connected with the switch key;
the switch key interface circuit is connected with the switch switching circuit;
the switch switching circuit is connected with the switch driving circuit;
the switch driving circuit is connected with the application component;
the switch driving circuit is connected with a control chip of the equipment where the hardware switch circuit is located;
the switch key interface circuit is used for sending a switch signal to the switch switching circuit according to the operation of a user on a switch key;
the switch switching circuit is used for sending a driving signal to the switch driving circuit according to the switch signal;
the switch driving circuit is used for controlling the opening and closing of the application component according to the driving signal.
2. The hardware switching circuit of claim 1, wherein the switch driver circuit comprises: a shooting switch driving circuit and a recording switch driving circuit;
the application component comprises: a camera and a recording assembly;
the shooting switch driving circuit and the recording switch driving circuit are respectively connected with the switch switching circuit;
the shooting switch driving circuit is respectively connected with the camera and the control chip;
the recording switch driving circuit is connected with the recording component.
3. The hardware switch circuit of claim 2, wherein the recording switch driving circuit comprises: the on-off control circuit and the data transmission circuit;
the data transmission circuit and the switch switching circuit are respectively connected with the on-off control circuit;
the data transmission circuit and the control chip are respectively connected with the recording component.
4. The hardware switching circuit of claim 3, wherein the switch button interface circuit comprises: the device comprises a first interface, a first magnetic bead, a first capacitor and a second capacitor;
the first end of the first interface is respectively connected with the first end of the first magnetic bead and the first end of the first capacitor;
the second end of the first magnetic bead is connected with the first end of the second capacitor and the power supply respectively;
the second end of the first interface is connected with the switch key;
the second end of the first capacitor, the second end of the second capacitor, the third end of the first interface, the fourth end of the first interface and the fifth end of the first interface are all grounded.
5. The hardware switching circuit of claim 4, wherein the switching circuit comprises: the circuit comprises a first chip, a first resistor, a second resistor, a third capacitor, a fourth capacitor and a first TVS diode;
the output end of the first interface is connected with the first end of the first resistor;
the first end of the second resistor, the first end of the first TVS diode, the second end of the first resistor and the first end of the third capacitor are respectively connected with the second end of the first chip;
the second end of the second resistor and the first end of the third resistor are respectively connected with the first end of the first chip;
the second end of the third resistor is connected with the fourth end of the first chip;
the first end of the fourth capacitor and the power supply are respectively connected with the fifth end of the first chip;
and the third end of the first chip, the second end of the third capacitor and the second end of the fourth capacitor are all grounded.
6. The hardware switch circuit of claim 5, wherein the capture switch drive circuit comprises: the second chip, a fourth resistor, a fifth resistor, a sixth resistor, a fifth capacitor, a sixth capacitor and a first MOS tube;
the first end of the second chip is connected with the first end of the fifth capacitor and the power supply respectively;
the first end of the fourth resistor, the first end of the fifth resistor and the first end of the first MOS tube are respectively connected with the second end of the second chip;
the second end of the fourth resistor is connected with the control chip;
the second end of the first MOS tube is connected with the fourth end of the first chip;
the third end of the second chip is connected with the first end of the sixth resistor;
a fifth end of the second chip is respectively connected with the camera and a first end of the sixth capacitor;
the second end of the fifth resistor, the second end of the fifth capacitor, the third end of the first MOS tube, the fourth end of the second chip, the second end of the sixth resistor and the second end of the sixth capacitor are all grounded.
7. The hardware switching circuit of claim 5, wherein the on-off control circuit comprises: the third chip, a seventh resistor, a seventh capacitor and a second MOS tube;
the first end of the third chip is respectively connected with the fourth end of the first chip and the second end of the second MOS tube;
the first end of the second MOS tube is connected with the first end of the seventh resistor;
the second end of the seventh resistor is connected with the output end of the first interface;
the second end of the third chip is respectively connected with the first end of the seventh capacitor and the power supply;
the third end of the third chip and the fourth end of the third chip are respectively connected with the data transmission circuit;
and a fifth end of the third chip, a second end of the seventh capacitor and a third end of the second MOS tube are all grounded.
8. The hardware switching circuit of claim 7, wherein the recording component comprises: the audio recording interface and the audio processing chip are connected with the audio processing chip;
the recording interface and the audio processing chip are respectively connected with the data transmission circuit;
the audio processing chip is connected with the control chip.
9. The hardware switching circuit of claim 8, wherein the data transmission circuit comprises: an eighth resistor, a ninth resistor, a tenth resistor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a second TVS diode, a third TVS diode, a fourth TVS diode, and a fifth TVS diode;
the first end of the eighth resistor, the first end of the eighth capacitor and the first end of the ninth capacitor are respectively connected with the third end of the third chip;
the first end of the ninth resistor is connected with the fourth end of the third chip;
a second end of the ninth resistor, a first end of the tenth capacitor, a first end of the eleventh capacitor, a first end of the thirteenth capacitor, a first end of the second TVS diode, and a first end of the third TVS diode are respectively connected to a first end of the recording interface;
a second end of the eleventh capacitor, a first end of the twelfth capacitor, a first end of the fourth TVS diode, a first end of the fourteenth capacitor, a first end of the tenth resistor, and a first end of the fifth TVS diode are respectively connected to a second end of the recording interface;
a second end of the eighth resistor, a second end of the thirteenth capacitor and a second end of the fourteenth capacitor are respectively connected with the audio processing chip;
a second end of the eighth capacitor, a second end of the ninth capacitor, a second end of the tenth capacitor, a second end of the twelfth capacitor, a second end of the tenth resistor, a second end of the second TVS diode, a second end of the third TVS diode, a second end of the fourth TVS diode, a second end of the fifth TVS diode, a third end of the recording interface, and a fourth end of the recording interface are all grounded.
10. A terminal device, comprising: a device body, a control chip and a hardware switching circuit as claimed in any one of claims 1 to 9;
the control chip and the hardware switch circuit are both arranged on the equipment main body;
the control chip is connected with the hardware switch circuit.
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| CN202020000755.2U CN211151935U (en) | 2020-01-02 | 2020-01-02 | Hardware switching circuit and terminal equipment |
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| CN202020000755.2U CN211151935U (en) | 2020-01-02 | 2020-01-02 | Hardware switching circuit and terminal equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113747079A (en) * | 2021-09-27 | 2021-12-03 | 上海布鲁可积木科技有限公司 | Camera drive control circuit, layout structure, camera and toy |
| CN115062351A (en) * | 2022-08-19 | 2022-09-16 | 北京万里红科技有限公司 | Privacy protection circuit and method and electronic equipment |
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2020
- 2020-01-02 CN CN202020000755.2U patent/CN211151935U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113747079A (en) * | 2021-09-27 | 2021-12-03 | 上海布鲁可积木科技有限公司 | Camera drive control circuit, layout structure, camera and toy |
| CN113747079B (en) * | 2021-09-27 | 2023-04-18 | 上海布鲁可积木科技有限公司 | Camera drive control circuit, layout structure, camera and toy |
| CN115062351A (en) * | 2022-08-19 | 2022-09-16 | 北京万里红科技有限公司 | Privacy protection circuit and method and electronic equipment |
| CN115062351B (en) * | 2022-08-19 | 2022-11-11 | 北京万里红科技有限公司 | Privacy protection circuit and method and electronic equipment |
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