CN108664435B - Data clearing circuit and electronic equipment - Google Patents
Data clearing circuit and electronic equipment Download PDFInfo
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- CN108664435B CN108664435B CN201810852981.0A CN201810852981A CN108664435B CN 108664435 B CN108664435 B CN 108664435B CN 201810852981 A CN201810852981 A CN 201810852981A CN 108664435 B CN108664435 B CN 108664435B
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- 230000001960 triggered effect Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000005669 field effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
Abstract
The invention discloses a data clearing circuit and an electronic device, wherein the circuit is arranged in a circuit board of the electronic device, and the data clearing circuit comprises: the circuit board comprises a first trigger component, a first switch unit and a second switch unit, wherein the first trigger component is connected with the first switch unit, and is used for being triggered to generate a first trigger signal after the circuit board is subjected to a first installation operation and sending the first trigger signal to the first switch unit; the first switch unit is connected with the second switch unit, generates a first control signal according to the first trigger signal, and sends the first control signal to the second switch unit; the second switch unit sends a clearing instruction to a target object in the circuit board according to the first control signal so as to carry out data clearing operation on the target object. The data clearing circuit can restart the target equipment in the process of assembling the circuit board of the electronic equipment, so that the data in the target equipment is cleared, and the clearing operation is simple and efficient.
Description
Technical Field
The present invention relates to the field of electronic circuits, and in particular, to a data clearing circuit and an electronic device.
Background
At present, when electronic devices such as a notebook computer are assembled, data clearing operation needs to be performed on some target devices, so that data errors are avoided, for example, data clearing operation needs to be performed on an RTC (Real Time Clock) on the notebook computer. However, this operation requires special equipment and special time to do, and the cleaning operation is inefficient and likely to be forgotten during factory or user assembly, resulting in unnecessary loss of data errors.
Disclosure of Invention
The embodiment of the invention aims to provide a data clearing circuit and electronic equipment, wherein the data clearing circuit can restart target equipment (such as an RTC) in the process of assembling a circuit board so as to avoid forgetting to clear data in the target equipment (such as the RTC), and the clearing operation is simple and efficient.
In order to solve the technical problems, the embodiment of the invention adopts the following technical scheme: a data clearing circuit provided in a circuit board of an electronic device, the data clearing circuit comprising: a first trigger component, a first switch unit and a second switch unit,
the first trigger component is connected with the first switch unit, and is used for being triggered to generate a first trigger signal after the circuit board is subjected to a first installation operation and sending the first trigger signal to the first switch unit;
the first switch unit is connected with the second switch unit, generates a first control signal according to the first trigger signal, and sends the first control signal to the second switch unit;
and the second switch unit sends a clearing instruction to a target object in the circuit board according to the first control signal so as to carry out data clearing operation on the target object.
Preferably, the data clearing circuit further includes a reset sub-circuit, the reset sub-circuit including: a second trigger assembly and a third switch unit connected to each other;
the second trigger component can be triggered to generate a second trigger signal after the circuit board is subjected to a second installation operation, and the second trigger signal is sent to the third switch unit;
the third switch unit is arranged between the first switch unit and the second switch unit and is used for generating a second control signal according to the second trigger signal so that the second switch unit generates a reset instruction according to the second control signal and resets the target object.
Preferably, the second installation operation includes a pressure operation, the second trigger assembly includes a pressure switch, the pressure switch is connected with a control end of the third switch unit, the pressure switch generates the second trigger signal under the pressure operation, and the second trigger signal is sent to the third switch unit through the control end of the third switch unit.
Preferably, the reset sub-circuit further includes a current protection element, and the current protection element is disposed at an output end of the third switching unit, so as to prevent the third switching unit from current-flowing backward to the second switching unit.
Preferably, the first mounting operation is specifically to fix the circuit board on a mounting position by using a locking member, so that the potential of the input side of the first trigger assembly changes, and the first trigger signal is generated.
Preferably, the data clearing circuit further comprises a power supply, and the power supply is respectively connected with the first trigger component, the first switch unit, the second switch unit and the reset sub-circuit and supplies power to the first trigger component, the first switch unit, the second switch unit and the reset sub-circuit.
Preferably, the first switch unit, the second switch unit and the third switch unit are all MOS field effect transistors.
Preferably, the N pole of the first switch unit is grounded, and the connection between the first trigger component and the first switch unit is specifically: the first trigger component is connected with the G pole of the first switch unit.
Preferably, the N pole of the second switching unit is grounded, and the connection between the first switching unit and the second switching unit is specifically: and the D pole of the first switch unit is connected with the G pole of the second switch unit so that the D pole of the second switch unit generates the clearing instruction.
The embodiment of the invention also provides electronic equipment, which comprises the data clearing circuit, wherein the data clearing circuit is used for restarting the RTC of the electronic equipment so as to clear the data in the RTC.
The embodiment of the invention has the beneficial effects that: the data clearing circuit can restart the target equipment (such as RTC) in the process of assembling the circuit board of the electronic equipment, so that data in the target equipment is cleared, the step of forgetting the data clearing operation is avoided because the assembling process is usually required, and the clearing operation brought by the data clearing circuit is simple and efficient.
Drawings
FIG. 1 is a block diagram of a data clearing circuit according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of one embodiment of a data clearing circuit according to an embodiment of the present invention;
1-first switching unit 2-second switching unit
3-third switching unit 4-current protection element
5-pressure switch
Detailed Description
Various aspects and features of the present invention are described herein with reference to the accompanying drawings.
It should be understood that various modifications may be made to the embodiments of the invention herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of the invention will occur to persons of ordinary skill in the art.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the invention.
These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also to be understood that, although the invention has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the invention, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present invention will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present invention will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the inventive embodiments are merely examples of the invention, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the invention in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the invention.
The data clearing circuit provided by the embodiment of the invention is arranged in the circuit board of the electronic equipment, and can be used for carrying out data clearing operation on target equipment (such as an RTC chip in a notebook computer) in the electronic equipment, so that the target equipment runs successfully when the electronic equipment is started, and other errors caused to the electronic equipment are avoided. Fig. 1 is a block diagram of a data clearing circuit according to an embodiment of the present invention, as shown in fig. 1, the data clearing circuit includes: a first trigger assembly, a first switching unit 1 and a second switching unit 2. The specific structure of the first triggering component can be constructed according to the specific type and kind of the electronic device, in one embodiment, the first triggering component can be triggered in the process of assembling the electronic device, and the assembling process is not negligible, so that the first triggering component is triggered naturally in the process of assembling the electronic device by a factory or a user, the triggering operation of the first triggering component is not performed specially, the triggering efficiency is improved, and the triggering step is not forgotten. And the first switching unit 1 and the second switching unit 2 may be various types of components having a switching action, such as various types of field effect transistors, etc.
The first trigger component is connected with the first switch unit 1, and is used for being triggered to generate a first trigger signal after the circuit board is subjected to a first installation operation, and sending the first trigger signal to the first switch unit 1. The data clearing circuit is arranged in a circuit board of the electronic equipment, and when the circuit board is subjected to first installation operation, for example, the circuit board is installed at a target position, the triggering operation of the first triggering component can be triggered, so that the first triggering component generates a triggering signal which can be in various forms, such as a high potential form and a low potential form, or a specific instruction signal and the like. It should be noted that, mounting the circuit board at the target position is an indispensable step in assembling the electronic device, and thus the triggering operation performed on the first triggering member is not easily omitted. The first triggering component sends a first triggering signal to the first switching unit 1, which can be used as an input signal for the first switching unit 1 to operate the first switching unit 1.
The first switch unit 1 is connected to the second switch unit 2, and the first switch unit 1 generates a first control signal according to the first trigger signal and transmits the first control signal to the second switch unit 2. Specifically, the first control signal sent by the first switch unit 1 may be used as an input signal of the second switch unit 2 to control the second switch unit 2. And the first control signal is generated by the first switching unit 1 according to the first trigger signal. In this embodiment, the first switch unit 1 and the second switch unit 2 are matched with each other, and other control signals can be sent to the second switch unit 2 by using other circuits or elements, and the other control signals can be matched with the first control signal or independent of the first control signal, so that other related operations with data clearing operations can be realized, and the practicability of the data clearing circuit is increased.
The second switching unit 2 transmits a clear instruction to the target object in the circuit board according to the first control signal to perform a data clear operation on the target object. The target object can be an apparatus in the electronic apparatus and needing to perform data clearing operation in the electronic apparatus assembling process, such as an RTC chip (Real Time Clock) in a notebook computer, and the like, after being subjected to data clearing operation, the target object can ensure correct data logic when the electronic apparatus operates, so as to avoid occurrence of operation errors.
In an embodiment of the present invention, fig. 2 is a circuit diagram of a specific embodiment of a data clearing circuit in an embodiment of the present invention, and in combination with fig. 2, the data clearing circuit further includes a reset sub-circuit, where the reset sub-circuit can perform a reset operation on a target device, so that the target device is prevented from being in a clear state all the time without intervention, and the electronic device can be started normally. The reset sub-circuit includes: a second trigger assembly and a third switching unit 3 connected to each other. The specific structure of the second triggering component can also be constructed according to the specific type and kind of the electronic device or the circuit board, in one embodiment, the second triggering component can be triggered in another process of assembling the electronic device, and the assembling process is not negligible, so that the second triggering component is triggered naturally in the process of assembling the electronic device by a factory or a user, thereby achieving the purpose of resetting the target device. And the third switching unit 3 may be various types of components having a switching action, such as various types of field effect transistors, etc.
The second trigger assembly can be triggered to generate a second trigger signal after the circuit board is subjected to a second mounting operation, and transmits the second trigger signal to the third switch unit 3. The second mounting operation may be an operation performed during the assembly of the circuit board or the electronic device, for example, when the electronic device is a notebook computer and the D-cover component is mounted on the circuit board, the triggering operation of the second triggering component may be performed, and in one embodiment, a protrusion is disposed on the D-cover component, and the protrusion can press the triggering end of the second triggering component when the D-cover component is assembled on the circuit board, so that the second triggering component generates the second triggering signal. The second trigger assembly can be triggered by a long user or a user when the circuit board is assembled, the operation is simple, and the trigger efficiency is improved.
The third switch unit 3 is disposed between the first switch unit 1 and the second switch unit 2, and is configured to generate a second control signal according to the second trigger signal, so that the second switch unit 2 generates a reset instruction according to the second control signal, and performs a reset operation on the target object. Specifically, the third switch unit 3 can generate a second control signal and send the second control signal to the second switch unit 2, where the second control signal may cooperate with the first control signal sent by the first switch unit 1, for example, after the first control signal controls the second switch unit 2 to generate a clear command to perform a data clear operation on the target object, the second control signal controls the second switch unit 2 to generate a reset command to perform a reset operation on the target object, so that the electronic device can be started normally.
In one embodiment of the present invention, as shown in fig. 2, the second installation operation includes a pressure operation, the second triggering assembly includes a pressure switch 5, the pressure switch 5 is connected to the control terminal of the third switching unit 3, the pressure switch 5 generates a second triggering signal under the pressure operation, and transmits the second triggering signal to the third switching unit 3 through the control terminal of the third switching unit 3. The pressure operation is to trigger the pressure switch 5 of the second trigger assembly under the pressing, and after the pressure switch 5 is triggered, the second trigger signal can be generated and sent to the third switch unit 3 through the control end of the third switch unit 3, and the third switch unit 3 takes the second trigger signal as the input control signal, so as to generate the second control signal. In one embodiment, the pressure switch 5 makes the two side circuits of the pressure switch 5 conduct in a state of not being under pressure, and makes the two side circuits break after the pressure switch 5 is touched, so that the electric potential of the output end of the second trigger component changes to form a second trigger signal.
In one embodiment of the present invention, the reset sub-circuit further includes a current protection element 4, and the current protection element 4 is disposed at the signal output terminal of the third switching unit 3 to prevent the third switching unit 3 from current-flowing backward to the second switching unit 2. Specifically, the current protection element 4 is disposed between the reset sub-circuit and the main circuit of the data clearing circuit, so as to prevent the current of the reset sub-circuit from reversely flowing into the main circuit, ensure that the potential of the input end of the second switch unit 2 cannot be influenced by the reset sub-circuit to rise at will, ensure that the third switch can send out the second control signal, and further ensure that the data clearing circuit can work normally. In one embodiment, the current protection element 4 may be a diode (D773).
In one embodiment of the present invention, the first mounting operation is specifically to fix the circuit board on the mounting position by using the locking member, so that the potential of the input side of the first trigger assembly changes, and the first trigger signal is generated. The locking member secures the circuit board to the mounting location such that the input side of the first trigger assembly is at the same potential as the contact portion on the mounting location, for example, by tightening the circuit board to the mounting location using a screw, pulling the potential (from high to low) of the input side of the first trigger assembly low, thereby generating the first trigger signal.
In one embodiment of the invention, the data clearing circuit further comprises a power supply, which is connected to and supplies power to the first trigger assembly, the first switching unit 1, the second switching unit 2 and the reset sub-circuit, respectively. The power supply can be provided in a battery mode, such as a battery installed on electronic equipment, can emit 3V voltage, is respectively connected with the first trigger component, the first switch unit 1, the second switch unit 2 and the reset sub-circuit, and can be provided with corresponding resistors (R) between the power supply and the components as required, so that the power parameters are ensured to accord with a preset range. In a specific embodiment, a power supply is connected to the line between the first trigger assembly and the first switching unit 1 and to the line between the first switching unit 1 and the second switching unit 2 and to the third switching unit 3 and to the second trigger assembly for providing power thereto.
In one embodiment of the present invention, the first switching unit 1, the second switching unit 2 and the third switching unit 3 are all MOS field effect transistors. MOS field effect transistor, namely: MOSFET (Metal-Oxide-Semiconductor Field-Effect-Transistor) belongs to insulated gate, has G pole, D pole and N pole, if N pole ground is low potential, can make D pole and N pole disconnection after the potential of G pole is pulled down, because D pole is connected with the power, the potential of D pole also can be risen. Conversely, if the potential of the G pole is raised, this will cause conduction between the D and N poles, and if the N pole is grounded low, the D pole will also go low.
In one embodiment of the present invention, the N pole of the first switch unit 1 is grounded, and the first trigger component is connected to the first switch unit 1 specifically: the first trigger assembly is connected to the G pole of the first switching unit 1. The G pole of the first switch unit 1 is also connected with a power supply (i.e. the potential of the G pole is a high potential), after the first trigger component sends out the first trigger signal, if the first trigger signal is specifically that the potential of the output end of the first trigger component connected with the first switch is from high to low, the potential of the G pole of the first switch unit 1 is also from high to low, so that the D pole and the N pole of the first switch unit 1 are disconnected, and because the D pole of the first switch unit 1 is connected with the power supply, the potential of the D pole of the first switch unit 1 is raised.
In one embodiment of the present invention, the N pole of the second switch unit 2 is grounded, and the connection between the first switch unit 1 and the second switch unit 2 is specifically: the D pole of the first switching unit 1 is connected with the G pole of the second switching unit 2 so that the D pole of the second switching unit 2 generates a clear instruction. The G pole of the second switch unit 2 is connected with a high potential power supply, the N pole of the second switch unit 2 is grounded to a low potential, when the G pole of the second switch unit 2 is turned to a high potential due to the effect of the D pole of the first switch unit 1, the D pole and the N pole of the second switch unit 2 are turned on, and when the N pole of the second switch unit 2 is grounded, the D pole of the second switch unit 2 is also turned to a low potential from a high potential, so that a clearing command is generated, and the target equipment (such as RTC) is restarted, thereby achieving the purpose of data clearing operation of the target equipment.
In addition, in combination with the above-mentioned specific embodiment and in combination with the reset sub-circuit, the third switch unit 3 is also a MOS field effect transistor, the N pole of the third switch unit 3 is grounded to a low potential, the D pole of the third switch unit 3 is connected to a power source, two sides of the pressure switch 5 are a first side (1 to 2 sides) and a second side (3 to 4 sides), a trigger point is disposed between the first side and the second side, the first side is grounded to a low potential, the second side is connected to a power source, when the trigger point is pressed, the first side is disconnected from the second side, the second side is connected to the power source, the potential is raised, thereby forming a second trigger signal, and the second side is sent to the G pole of the third switch unit 3, that is, the potential of the G pole of the third switch unit 3 is raised, so that the D pole of the third switch unit 3 is turned on with the N pole, and the D pole of the third switch unit 3 is lowered to a low potential, and the D pole of the second switch unit 2 is connected to the G pole of the second switch unit 2, so that the second switch unit 2 is reset to a high, and the second switch unit is reset, if the second switch unit is turned on, and the second electronic device is turned off, and the corresponding instruction is turned on, and the electronic device is turned off.
The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.
Claims (9)
1. A data clearing circuit, disposed in a circuit board of an electronic device, the data clearing circuit comprising: a first trigger component, a first switch unit and a second switch unit,
the first trigger component is connected with the first switch unit, and is used for being triggered to generate a first trigger signal after the circuit board is subjected to a first installation operation and sending the first trigger signal to the first switch unit;
the first switch unit is connected with the second switch unit, generates a first control signal according to the first trigger signal, and sends the first control signal to the second switch unit;
the second switch unit sends a clearing instruction to a target object in the circuit board according to the first control signal so as to carry out data clearing operation on the target object; wherein,
the first installation operation is to fix the circuit board on an installation position by using a locking piece, so that the potential of the input side of the first trigger assembly changes, and the first trigger signal is generated;
the first switch unit and the second switch unit are both MOS field effect transistors.
2. The data clearing circuit of claim 1, wherein the data clearing circuit further comprises a reset sub-circuit comprising: a second trigger assembly and a third switch unit connected to each other;
the second trigger component can be triggered to generate a second trigger signal after the circuit board is subjected to a second installation operation, and the second trigger signal is sent to the third switch unit;
the third switch unit is arranged between the first switch unit and the second switch unit and is used for generating a second control signal according to the second trigger signal so that the second switch unit generates a reset instruction according to the second control signal and resets the target object.
3. The data clearing circuit of claim 2, wherein the second installation operation comprises a pressure operation, the second trigger assembly comprises a pressure switch, the pressure switch is connected with the control terminal of the third switch unit, the pressure switch generates the second trigger signal under the pressure operation, and the second trigger signal is sent to the third switch unit through the control terminal of the third switch unit.
4. The data clearing circuit of claim 2, wherein the reset sub-circuit further comprises a current protection element disposed at an output of the third switching unit to prevent the third switching unit from current flowing backward through the second switching unit.
5. The data clearing circuit of claim 2, further comprising a power supply connected to and powering the first trigger assembly, the first switching unit, the second switching unit, and the reset sub-circuit, respectively.
6. The data clearing circuit of claim 2, wherein the third switching unit is a MOS field effect transistor.
7. The data clearing circuit of claim 6, wherein the N-pole of the first switch unit is grounded, and the first trigger component is connected to the first switch unit specifically as follows: the first trigger component is connected with the G pole of the first switch unit.
8. The data clearing circuit of claim 6, wherein the N-pole of the second switching unit is grounded, and the first switching unit is connected to the second switching unit specifically by: and the D pole of the first switch unit is connected with the G pole of the second switch unit so that the D pole of the second switch unit generates the clearing instruction.
9. An electronic device comprising a data clearing circuit as claimed in any one of claims 1 to 8 for restarting an RTC of the electronic device to clear data in the RTC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852981.0A CN108664435B (en) | 2018-07-30 | 2018-07-30 | Data clearing circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852981.0A CN108664435B (en) | 2018-07-30 | 2018-07-30 | Data clearing circuit and electronic equipment |
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| CN108664435A CN108664435A (en) | 2018-10-16 |
| CN108664435B true CN108664435B (en) | 2024-02-23 |
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| CN201810852981.0A Active CN108664435B (en) | 2018-07-30 | 2018-07-30 | Data clearing circuit and electronic equipment |
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| CN1214792A (en) * | 1996-03-28 | 1999-04-21 | 西门子公司 | Circuit arrangement with plurality of electronic circuit components |
| US7257714B1 (en) * | 1999-10-19 | 2007-08-14 | Super Talent Electronics, Inc. | Electronic data storage medium with fingerprint verification capability |
| CN101576764A (en) * | 2008-10-10 | 2009-11-11 | 鸿富锦精密工业（深圳）有限公司 | CMOS data clear circuit |
| CN208654788U (en) * | 2018-07-30 | 2019-03-26 | 合肥联宝信息技术有限公司 | A kind of data clear circuit and electronic equipment |
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2018
- 2018-07-30 CN CN201810852981.0A patent/CN108664435B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214792A (en) * | 1996-03-28 | 1999-04-21 | 西门子公司 | Circuit arrangement with plurality of electronic circuit components |
| US7257714B1 (en) * | 1999-10-19 | 2007-08-14 | Super Talent Electronics, Inc. | Electronic data storage medium with fingerprint verification capability |
| CN101576764A (en) * | 2008-10-10 | 2009-11-11 | 鸿富锦精密工业（深圳）有限公司 | CMOS data clear circuit |
| CN208654788U (en) * | 2018-07-30 | 2019-03-26 | 合肥联宝信息技术有限公司 | A kind of data clear circuit and electronic equipment |
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| CN108664435A (en) | 2018-10-16 |
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