CN210518243U - EC reset circuit and electronic equipment based on composite signal - Google Patents
EC reset circuit and electronic equipment based on composite signal Download PDFInfo
- Publication number
- CN210518243U CN210518243U CN201921829134.9U CN201921829134U CN210518243U CN 210518243 U CN210518243 U CN 210518243U CN 201921829134 U CN201921829134 U CN 201921829134U CN 210518243 U CN210518243 U CN 210518243U
- Authority
- CN
- China
- Prior art keywords
- information
- reset signal
- gate
- diode
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a EC reset circuit based on composite signal forces the EC to reset to local equipment, relates to electronic circuit technical field, and it includes detection circuitry and control circuit, wherein: the input end of the detection circuit is used for receiving volume information and Pogo information of local equipment; the detection circuit processes the volume information and the Pogo information, and generates a forced reset signal when the volume information and the Pogo information both meet corresponding set values; the output end of the detection circuit is connected with the starting signal end and the enabling signal end of the power supply chip for supplying power to the EC through the control circuit, so that the starting signal of the starting signal end and the enabling signal of the enabling signal end are pulled down through the control circuit, and the power supply connection of the EC is disconnected. The embodiment of the utility model provides a still disclose the electronic equipment including above-mentioned EC reset circuit based on composite signal. The embodiment of the utility model provides a only need accomplish with the help of the volume button and force to reset.
Description
Technical Field
The embodiment of the utility model provides a relate to electronic circuit technical field, concretely relates to EC reset circuit and electronic equipment based on composite signal.
Background
EC (embedded Controller) is widely used in notebook computers, tablet computers and various industrial personal computers, and is also called KBC (Keyboard Controller) in notebook computers and tablet computers. The EC is high in the system. The EC controls the timing of most important signals during system start-up. After the computer is started, the EC controls equipment such as a keyboard, an indicator light, a fan, a touch panel and the like. In addition, the EC controls the standby, sleep, etc. states of the system.
If the EC is down, it cannot operate, which will affect the stability and operation of the whole system. Conventionally, the power supply equipment and the batteries are removed, but some batteries are built in and inconvenient to operate. At this time, it is necessary to perform an EC reset to allow the entire system to operate normally again.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an EC reset circuit and electronic equipment based on composite signal, it only needs to accomplish with the help of the volume button and forces to reset.
In a first aspect, an embodiment of the present invention provides an EC reset circuit based on composite signal for resetting the EC of the local device forcibly, which includes a detection circuit and a control circuit, wherein:
the input end of the detection circuit is used for receiving volume information and Pogo information of local equipment, and the Pogo information is voltage information which is generated by a Pogo interface of the local equipment and subjected to voltage division processing through external equipment; the detection circuit processes the volume information and the Pogo information, and generates a forced reset signal when the volume information and the Pogo information both meet corresponding set values;
the output end of the detection circuit is connected with the starting signal end and the enabling signal end of the power supply chip for supplying power to the EC through the control circuit, so that after the detection circuit generates a forced reset signal, the starting signal of the starting signal end and the enabling signal of the enabling signal end are pulled down through the control circuit, and the power supply connection of the EC is disconnected.
In a preferred embodiment, the detection circuit includes a first input terminal, a second input terminal, and a third input terminal, where the first input terminal, the second input terminal, and the third input terminal are respectively connected to a volume + terminal of the local device, a volume-terminal of the local device, and an output terminal of the external device after voltage division processing, and are respectively used for receiving volume + information, volume-information, and Pogo information;
and when the volume + information, the volume-information and the Pogo information all meet corresponding set values, the detection circuit outputs a forced reset signal.
In a preferred embodiment, the detection circuit further comprises a first output corresponding to the first input, a second output corresponding to the second input, and a third output corresponding to the third input; and when the volume + information, the volume-information and the Pogo information all meet corresponding set values, the first output end, the second output end and the third output end all output high levels.
In a preferred embodiment, the detection circuit further comprises a diode D1 and a diode D2; the anodes of the diode D1 and the diode D2 are both connected to an auxiliary power supply through a resistor R1, the cathodes of the diode D1 and the diode D2 are both connected to the auxiliary power supply through a resistor R1, and a comprehensive output end is further formed among the anodes of the diode D1 and the diode D2 and the resistor R1 and is used for outputting comprehensive volume information; when the first output end and the second output end both output high levels, the comprehensive output end outputs high levels.
In a preferred embodiment, a forced line module is further included between the detection circuit and the control circuit, an input end of the forced line module is configured to receive four kinds of information, and output a forced reset signal when the four kinds of information are all at a high level, where the four kinds of information are the volume + information, the volume-information, the volume comprehensive information, and the Pogo information, respectively.
In a preferred embodiment, the forced line module comprises one or more of the following:
the two input ends of the first AND gate are respectively connected to a first output end and a second output end, the output end of the first AND gate is connected to the cathode of a diode D3, and the anode of a diode D3 forms a first reset signal end;
the two input ends of the second AND gate are respectively connected to the first output end and the comprehensive output end, the output end of the second AND gate is connected to the cathode of a diode D4, and the anode of a diode D4 forms a second reset signal end;
two input ends of the third AND gate are respectively connected to the second output end and the comprehensive output end, the output end of the third AND gate is connected to the cathode of a diode D5, and the anode of the diode D5 forms a third reset signal end;
two input ends of the fourth AND gate are respectively connected to the third output end and the comprehensive output end, the output end of the fourth AND gate is connected to the cathode of a diode D6, and the anode of the diode D5 forms a fourth reset signal end;
the first reset signal end, the second reset signal end, the third reset signal end and the fourth reset signal end are all connected with an auxiliary power supply through a resistor R4;
when the forced line module comprises all of the first and gate, the second and gate, the third and gate and the fourth and gate, the first reset signal end, the second reset signal end, the third reset signal end and the fourth reset signal end together form a forced reset signal end, and the forced reset signal end is used for generating a forced reset signal and sending the forced reset signal to the input end of the control circuit;
when the forced line module does not comprise all the first AND gate, the second AND gate, the third AND gate and the fourth AND gate and does not receive all the four information, the rest reset signal ends and the existing reset signal ends form a forced reset signal end together, and the forced reset signal end is used for generating a forced reset signal and sending the forced reset signal to the input end of the control circuit; the residual reset signal end is formed by a one-way diode through the output end corresponding to the information of which the four kinds of information are not received, and is also connected with an auxiliary power supply through a resistor R4; the existing reset signal end is a reset signal end corresponding to one or more of the forced line module including the first and gate, the second and gate, the third and gate and the fourth and gate.
In a preferred embodiment, the control circuit is an electronic switch, an input end of the electronic switch is respectively connected to the power-on signal end and the enable signal end, an output end of the electronic switch is grounded, and a control end of the electronic switch is connected to an output end of the detection circuit; when the detection circuit receives the forced reset signal and the low-level starting signal, the electronic switch is conducted, and the starting signal and the enabling signal are pulled down.
In a preferred embodiment, the control circuit is divided into two paths, the input ends of the electronic switches of the two paths of control circuits are respectively connected to the starting signal end and the enabling signal end, and a pull-down resistor is further connected in series with the electronic switch of any one or two paths of control circuits;
or/and;
the electronic switch is any one of a triode, an MOS tube, a relay, an IGBT, a silicon controlled rectifier and a diode current switch.
In a preferred embodiment, the forced reset signal is at a high level, the electronic switch is an NMOS transistor, a gate of the NMOS transistor is connected to the output terminal of the detection circuit, a source of the NMOS transistor is grounded or grounded through a pull-down resistor, and a drain of the NMOS transistor is connected to the power-on signal terminal and the enable signal terminal.
In a second aspect, an embodiment of the present invention provides an electronic device, which includes the first aspect of the present invention, an EC reset circuit based on a composite signal.
Compared with the prior art, the embodiment of the utility model provides a through detection volume information and Pogo information, generate when volume information and Pogo information satisfy the requirement and force reset signal, the power connection of disconnection EC reaches the purpose of forcing to reset, the flexible operation.
Drawings
Fig. 1 is a schematic block diagram of an EC reset circuit based on a composite signal according to embodiment 1 of the present invention;
fig. 2 is a schematic circuit diagram of a detection circuit according to embodiment 1 of the present invention;
fig. 3 is a schematic circuit diagram of Pogo signal formation according to embodiment 1 of the present invention;
fig. 4 is a schematic circuit diagram of a forced circuit module according to embodiment 1 of the present invention;
fig. 5 is a schematic circuit diagram of a control circuit according to embodiment 1 of the present invention.
In the figure: 10. a local device; 11. a volume end; 12. a detection circuit; 121. a microprocessor; 13. a forced line module; 131. a first AND gate; 132. a second AND gate; 133. a third AND gate; 134. a fourth AND gate; 14. a control circuit; 15. a power supply chip; 16. EC; 17. a Pogo interface; 20. an external device; 30. and Pogo information.
Detailed description of the preferred embodiments
Embodiments of the present invention will be further described with reference to the accompanying drawings and specific embodiments, and it should be noted that, in the premise of no conflict, any combination between the embodiments or technical features described below may form a new embodiment. Except as specifically noted, the materials and equipment used in this example are commercially available.
Example 1:
an EC reset circuit based on composite signals is characterized in that an external device 20 detects Pogo information of a local device, and then forcibly resets EC of the local device 10 in combination with volume key information (volume information) of the local device, namely, the EC can be forcibly reset only through the volume key of the local device under the condition that the Pogo information meets requirements.
The local device mainly refers to a device such as a tablet computer or a notebook computer having an EC (embedded Controller), and may also be various industrial control devices having an EC, and the local device should have a volume key (volume + key or/and volume-key) and a Pogo pin (Pogo interface 17) in addition to the EC function. The external equipment is mainly an external jig and can detect the Pogo pin voltage of the local equipment.
The local device may be connected to the Pogo pin interface of the external device through the magnetic connector, as shown in fig. 3, a Pogo signal (V1) at the main board end of the local device is output to the Pogo pin interface of the local device through a resistor R2, and the Pogo pin interface of the external device forms Pogo information 30 through a voltage dividing resistor R3.
In an implementation manner, please refer to fig. 1, which mainly includes a detection circuit 12 and a control circuit 14, wherein: the input end of the detection circuit is used for receiving volume information and Pogo information of local equipment; the detection circuit processes the volume information and the Pogo information in a manner that the detection circuit generates a forced reset signal when the volume information and the Pogo information both meet corresponding set values (set in advance as required).
The output end of the detection circuit is connected with the starting signal end and the enabling signal end of the power chip 15 for supplying power to the EC 16 through the control circuit, the output end of the power chip is connected with the power end of the EC, and after the detection circuit generates a forced reset signal, the starting signal of the starting signal end and the enabling signal of the enabling signal end are pulled down through the control circuit, so that the power chip stops working, the EC stops working due to power failure, the purpose of forced reset is achieved, and the operation is very flexible.
Volume information is the voltage formation of gathering local equipment's volume end 11 (volume button end), can only gather volume + information (the voltage information of volume + button) or volume-information (the voltage information of volume-button), certainly also can be like the utility model discloses the embodiment of preferred is gathered volume + information and volume-information simultaneously, when Pogo information satisfies the requirement, can force the EC that resets through local equipment's volume button.
The detection device can adopt a microprocessor, such as a singlechip, or other devices with processing functions, such as an FPGA, an ARM and the like, and can also be realized in a comparator mode.
For example, when the microprocessor 121 (other devices with processing functions are similar, and the comparator needs to be built by a plurality of comparators), please refer to fig. 2, in which the detection circuit includes a first input terminal, a second input terminal, and a third input terminal, where the first input terminal, the second input terminal, and the third input terminal are respectively connected to the volume + terminal of the local device, the volume-terminal of the local device, and the output terminal of the external device after voltage division processing, and are respectively used for receiving the volume + information, the volume-information, and the Pogo information. And when the volume + information, the volume-information and the Pogo information all meet the corresponding set values, the detection circuit outputs a forced reset signal.
Specifically, the detection circuit further includes a first output terminal corresponding to the first input terminal, a second output terminal corresponding to the second input terminal, and a third output terminal corresponding to the third input terminal; and when the volume + information, the volume-information and the Pogo information all meet the corresponding set values, the first output end, the second output end and the third output end all output high levels. The detection circuit also comprises a diode D1 and a diode D2; the anodes of the diode D1 and the diode D2 are both connected to an auxiliary power supply through a resistor R1, the cathodes of the diode D1 and the diode D2 are both connected to the auxiliary power supply through a resistor R1, and a comprehensive output end is further formed among the anodes of the diode D1 and the diode D2 and the resistor R1 and is used for outputting comprehensive volume information; by utilizing the one-way conductivity of the diode D1 and the diode D2, the integrated output outputs a high level when both the first output terminal and the second output terminal output a high level, and outputs a low level when one or both of the first output terminal and the second output terminal output a low level, thereby filtering the low levels output by the first output terminal and the second output terminal.
In order to further filter the low level that four outputs may exist, in the preferred embodiment of the present invention, force line module 14 is further disposed between the detection circuit and the control circuit, the input end of the force line module is used for receiving four kinds of information, and force reset signal is outputted when the four kinds of information are high level, the four kinds of information are respectively volume + information, volume-information, volume integrated information and Pogo information.
Referring to fig. 4, the forced line module includes one or more of the following:
the two input ends of the first and gate are respectively connected to a first output end and a second output end, the output end of the first and gate is connected to the cathode of a diode D3, and the anode of the diode D3 forms a first reset signal end;
the two input ends of the second and gate are respectively connected to the first output end and the comprehensive output end, the output end of the second and gate is connected to the cathode of a diode D4, and the anode of the diode D4 forms a second reset signal end;
the two input ends of the third and gate are respectively connected to the second output end and the comprehensive output end, the output end of the third and gate is connected to the cathode of a diode D5, and the anode of the diode D5 forms a third reset signal end;
a fourth and gate 134, two input ends of which are respectively connected to the third output end and the comprehensive output end, an output end of which is connected to the cathode of a diode D6, and the anode of the diode D5 forms a fourth reset signal end;
the first reset signal end, the second reset signal end, the third reset signal end and the fourth reset signal end are all connected with an auxiliary power supply through a resistor R4;
when the forced line module comprises all of the first and gate, the second and gate, the third and gate and the fourth and gate, the first reset signal end, the second reset signal end, the third reset signal end and the fourth reset signal end together form a forced reset signal end, and the forced reset signal end is used for generating a forced reset signal and sending the forced reset signal to the input end of the control circuit. This condition can be very good to ensure that the low levels that may exist at the four outputs are filtered out.
Of course, in some cases, for example, if the forced line module does not include all of the first and gate, the second and gate, the third and gate and the fourth and gate, and the forced line module does not receive all of the four kinds of information, the remaining reset signal terminal and the existing reset signal terminal together form a forced reset signal terminal for generating a forced reset signal and sending the forced reset signal to the input terminal of the control circuit; the residual reset signal end is formed by a one-way diode through the output end corresponding to the information of which the four kinds of information are not received, and is also connected with an auxiliary power supply through a resistor R4; the existing reset signal end is a reset signal end corresponding to one or more of the forced line module including the first and gate, the second and gate, the third and gate and the fourth and gate.
For example, when the forced line module only includes the first and gate (the existing reset signal terminal is the first reset signal terminal), the third output terminal and the integrated output terminal form a first remaining reset signal terminal and a second remaining reset signal terminal through a diode, respectively, and the first remaining reset signal terminal and the second remaining reset signal terminal are also connected to the auxiliary power supply through the resistor R4. The first reset signal end, the first residual reset signal end and the second residual reset signal end jointly form a forced reset signal end which is used for generating a forced reset signal and sending the forced reset signal to the input end of the control circuit, so that the control circuit can receive the forced reset signal when the four signals are all at high level.
The auxiliary power supply may be added to the reset circuit alone, or may use the output voltage V1 of the main board terminal.
The control circuit can adopt an electronic switch, the input end of the electronic switch is respectively connected to the starting signal end and the enabling signal end, the output end of the electronic switch is grounded, and the control end of the electronic switch is connected to the output end of the detection circuit; when the detection circuit receives the forced reset signal and the low-level starting signal, the electronic switch is conducted, and the starting signal and the enabling signal are pulled down.
The control circuit can adopt two paths, the input ends of the electronic switches of the two paths of control circuits are respectively connected to the starting signal end and the enabling signal end, wherein, a pull-down resistor is also connected in series on the electronic switch of any one path or two paths of control circuits, and preferably, the pull-down resistor is connected in series on the enabling signal end, namely, the starting signal of the starting signal end is directly pulled down to zero.
The electronic switch is any one of a triode, an MOS tube, a relay, an IGBT, a controlled silicon and a diode current switch.
Since the forced reset signal is a high level signal, when a transistor or an MOS is used, the transistor or the MOS which is turned on at a high level needs to be used, and of course, if a not gate is added after the forced reset signal, the transistor or the MOS which is turned on at a low level needs to be used.
For example, the forced reset signal is a high level signal, the electronic switch is an NMOS transistor, and the control circuit has two paths. Referring to fig. 5, the control circuit includes an NMOS transistor Q1 and an NMOS transistor Q2, gates (as control terminals of the electronic switch) of the NMOS transistor Q1 and the NMOS transistor Q2 are connected to the output terminal of the detection circuit, if there is a force line module, the gate is connected to the output terminal of the force line module for receiving a force reset signal, sources (as output terminals of the electronic switch) of the NMOS transistor Q1 and the NMOS transistor Q2 are grounded, or grounded through a pull-down resistor, and a drain (as an input terminal of the electronic switch) of the NMOS transistor Q1 is connected to the power-on signal terminal; the drain of the NMOS transistor Q2 is connected to the enable signal terminal through a pull-down resistor R5. It should be noted that the output and input of the electronic switch can be reversed.
The NMOS transistor Q1 and the NMOS transistor Q2 are turned on after receiving the high-level forced reset signal, and then pull down the power-on signal and the enable signal, thereby disconnecting the voltage connection of the EC and forcibly resetting the EC.
For the relay, the control end of the relay is a relay coil part, after the detection circuit receives a forced reset signal, the relay coil is excited, and the input end and the output end of the relay coil are two ends of a normally closed contact of the relay. For a diode current switch, the control terminal is the enable terminal of the diode current switch.
Example 2:
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the embodiments of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the embodiments of the present invention are all within the protection scope of the embodiments of the present invention.
Claims (10)
1. An EC reset circuit based on a composite signal for forced reset of an EC of a local device, comprising a detection circuit and a control circuit, wherein:
the input end of the detection circuit is used for receiving volume information and Pogo information of local equipment, and the Pogo information is voltage information which is generated by a Pogo interface of the local equipment and subjected to voltage division processing through external equipment; the detection circuit processes the volume information and the Pogo information, and generates a forced reset signal when the volume information and the Pogo information both meet corresponding set values;
the output end of the detection circuit is connected with the starting signal end and the enabling signal end of the power supply chip for supplying power to the EC through the control circuit, so that after the detection circuit generates a forced reset signal, the starting signal of the starting signal end and the enabling signal of the enabling signal end are pulled down through the control circuit, and the power supply connection of the EC is disconnected.
2. The composite signal based EC reset circuit of claim 1, wherein the detection circuit comprises a first input terminal, a second input terminal, and a third input terminal, wherein the first input terminal, the second input terminal, and the third input terminal are respectively connected to a volume + terminal of a local device, a volume-terminal of the local device, and an output terminal of an external device after voltage division processing, and are respectively configured to receive volume + information, volume-information, and Pogo information;
and when the volume + information, the volume-information and the Pogo information all meet corresponding set values, the detection circuit outputs a forced reset signal.
3. The composite signal based EC reset circuit of claim 2, wherein the detection circuit further comprises a first output corresponding to the first input, a second output corresponding to the second input, and a third output corresponding to the third input; and when the volume + information, the volume-information and the Pogo information all meet corresponding set values, the first output end, the second output end and the third output end all output high levels.
4. The composite signal based EC reset circuit of claim 3, wherein the detection circuit further comprises a diode D1 and a diode D2; the anodes of the diode D1 and the diode D2 are both connected to an auxiliary power supply through a resistor R1, the cathodes of the diode D1 and the diode D2 are both connected to the auxiliary power supply through a resistor R1, and a comprehensive output end is further formed among the anodes of the diode D1 and the diode D2 and the resistor R1 and is used for outputting comprehensive volume information; when the first output end and the second output end both output high levels, the comprehensive output end outputs high levels.
5. The EC reset circuit according to claim 4, further comprising a forced line module between the detection circuit and the control circuit, wherein an input end of the forced line module is configured to receive four kinds of information, and output a forced reset signal when all the four kinds of information are at a high level, and the four kinds of information are the volume + information, the volume-information, the volume integrated information, and the Pogo information, respectively.
6. The composite signal based EC reset circuit of claim 5, wherein the force line module comprises one or more of:
the two input ends of the first AND gate are respectively connected to a first output end and a second output end, the output end of the first AND gate is connected to the cathode of a diode D3, and the anode of a diode D3 forms a first reset signal end;
the two input ends of the second AND gate are respectively connected to the first output end and the comprehensive output end, the output end of the second AND gate is connected to the cathode of a diode D4, and the anode of a diode D4 forms a second reset signal end;
two input ends of the third AND gate are respectively connected to the second output end and the comprehensive output end, the output end of the third AND gate is connected to the cathode of a diode D5, and the anode of the diode D5 forms a third reset signal end;
two input ends of the fourth AND gate are respectively connected to the third output end and the comprehensive output end, the output end of the fourth AND gate is connected to the cathode of a diode D6, and the anode of the diode D5 forms a fourth reset signal end;
the first reset signal end, the second reset signal end, the third reset signal end and the fourth reset signal end are all connected with an auxiliary power supply through a resistor R4;
when the forced line module comprises all of the first and gate, the second and gate, the third and gate and the fourth and gate, the first reset signal end, the second reset signal end, the third reset signal end and the fourth reset signal end together form a forced reset signal end, and the forced reset signal end is used for generating a forced reset signal and sending the forced reset signal to the input end of the control circuit;
when the forced line module does not comprise all the first AND gate, the second AND gate, the third AND gate and the fourth AND gate and does not receive all the four information, the rest reset signal ends and the existing reset signal ends form a forced reset signal end together, and the forced reset signal end is used for generating a forced reset signal and sending the forced reset signal to the input end of the control circuit; the residual reset signal end is formed by a one-way diode through the output end corresponding to the information of which the four kinds of information are not received, and is also connected with an auxiliary power supply through a resistor R4; the existing reset signal end is a reset signal end corresponding to one or more of the forced line module including the first and gate, the second and gate, the third and gate and the fourth and gate.
7. The composite signal based EC reset circuit of any of claims 1-6, wherein the control circuit is an electronic switch, the input terminals of the electronic switch are connected to the power-on signal terminal and the enable signal terminal, respectively, the output terminal of the electronic switch is grounded, and the control terminal of the electronic switch is connected to the output terminal of the detection circuit; when the detection circuit receives the forced reset signal and the low-level starting signal, the electronic switch is conducted, and the starting signal and the enabling signal are pulled down.
8. The EC reset circuit according to claim 7, wherein the control circuit is two-way, the input terminals of the electronic switches of the two control circuits are respectively connected to the power-on signal terminal and the enable signal terminal, and a pull-down resistor is further connected in series with the electronic switch of any one or two control circuits;
or/and;
the electronic switch is any one of a triode, an MOS tube, a relay, an IGBT, a silicon controlled rectifier and a diode current switch.
9. The composite signal based EC reset circuit of claim 7, wherein the forced reset signal is high, the electronic switch is an NMOS transistor, a gate of the NMOS transistor is connected to the output terminal of the detection circuit, a source of the NMOS transistor is grounded or grounded through a pull-down resistor, and a drain of the NMOS transistor is connected to the power-on signal terminal and the enable signal terminal.
10. An electronic device comprising the composite signal based EC reset circuit of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921829134.9U CN210518243U (en) | 2019-10-28 | 2019-10-28 | EC reset circuit and electronic equipment based on composite signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921829134.9U CN210518243U (en) | 2019-10-28 | 2019-10-28 | EC reset circuit and electronic equipment based on composite signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210518243U true CN210518243U (en) | 2020-05-12 |
Family
ID=70573571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921829134.9U Active CN210518243U (en) | 2019-10-28 | 2019-10-28 | EC reset circuit and electronic equipment based on composite signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210518243U (en) |
-
2019
- 2019-10-28 CN CN201921829134.9U patent/CN210518243U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8977870B2 (en) | Apparatus for determining a USB compatible device, and supplying corresponding power thereafter | |
| US7082545B2 (en) | Method of and device for detecting cable connection | |
| US9201832B2 (en) | Electronic device with USB interface and method for starting USB communication therefor | |
| US7949886B2 (en) | Power supply system for motherboard | |
| US20070075680A1 (en) | Charging mode control circuit | |
| WO2021051445A1 (en) | Ncsi network card power supply system | |
| US9684362B2 (en) | Battery powered device | |
| US8935451B2 (en) | Network card detecting circuit | |
| CN110703892A (en) | EC reset circuit and electronic equipment based on USB C type interface | |
| US8200997B2 (en) | Computer wake up circuit includes a switch configured to prevent a control signals from an I/O controller being transmitted to south-bridge | |
| CN106526403B (en) | A kind of terminal leakage current detection circuit, terminal and terminal leakage current test system | |
| CN106019999B (en) | A kind of power supply control chip and the electronic equipment for being provided with the chip | |
| US20130318368A1 (en) | Power management system and method for server | |
| CN110690883A (en) | EC reset circuit and electronic equipment based on composite signal | |
| CN114089714A (en) | Portable electronic device | |
| CN210518243U (en) | EC reset circuit and electronic equipment based on composite signal | |
| CN102854964A (en) | Electronic equipment | |
| WO2022083360A1 (en) | Display touch apparatus and power supply control method | |
| CN210488494U (en) | EC reset circuit and electronic equipment based on USB C type interface | |
| CN110688260B (en) | EC reset circuit and electronic equipment based on earphone interface | |
| CN109709858B (en) | On-off control circuit, embedded equipment, method and system | |
| CN109871111B (en) | Display and electronic device using same | |
| CN108572936B (en) | USB interface control circuit | |
| CN219918421U (en) | Electronic equipment | |
| CN103535111A (en) | Power supply circuit and wireless network card |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |