CN104079273B - Preserve the circuit of user's operation and the electronic equipment with the circuit - Google Patents

Abstract

Provided are a circuit for storing user operations and electronic equipment with the circuit. The circuit includes: a receiving unit, which receives an input signal generated by an input device of the electronic device, and generates an internal signal based on the input signal; a storage unit, which receives the internal signal from the receiving unit, and uses the first power supply of the electronic device to save the received internal signal. A signal; an output unit that reads and outputs the internal signal saved by the saving unit in response to the power supply of the second power supply of the electronic device.

Description

Circuit for storing user operations and electronic device with said circuit

technical field

The present invention relates to the field of circuits, more specifically, to a circuit for storing user operations of an electronic device and an electronic device having the circuit.

Background technique

As the functions of electronic devices (such as mobile phones, tablet computers, PDAs, game consoles, etc.) become more and more powerful, electronic devices bring more and more convenience to people's daily life, and have become an inseparable part of people's daily life. a part of.

When the electronic device is turned on, the user can make the electronic device perform a corresponding function by performing a corresponding operation. For example, when the user wishes to turn on the electronic device, he may press a power key to trigger a power management integrated circuit (power management IC) inside the electronic device, thereby turning on the electronic device. However, when the battery power of the electronic device is low, even if the user presses the power button, the power management IC inside the electronic device cannot work, so the electronic device cannot be turned on. At this time, even if the external power supply is turned on, the electronic device cannot trigger the power management IC according to the pressing operation performed by the user on the power button. device can be turned on. Repeated pressing operations lead to poor user experience.

Therefore, the processing method of the existing electronic equipment for the user's operation cannot meet the usage requirements of the user.

Contents of the invention

The object of the present invention is to provide a circuit for storing user operations of an electronic device and an electronic device having the circuit.

One aspect of the present invention provides a circuit for storing user operations in an electronic device, which is characterized in that it includes: a receiving unit, which receives an input signal generated by an input device of the electronic device, and generates an internal signal based on the input signal; the saving unit, from The receiving unit receives the internal signal and saves the received internal signal by the first power supply of the electronic device; the output unit reads and outputs the internal signal saved by the saving unit in response to the power supply of the second power supply of the electronic device.

Optionally, the saving unit includes: a saver, which receives the internal signal from the receiving unit, and saves the received internal signal in response to the power supply of the first power supply of the electronic device; Power off clears the internal signals saved in the saver.

Optionally, when the power supply voltage output by the first power supply of the electronic device is greater than a predetermined voltage, the second power supply of the electronic device supplies power; when the power supply voltage output by the first power supply of the electronic device is not greater than the predetermined voltage, the second power supply of the electronic device Power outage.

Optionally, when the battery of the electronic device is charged and the power supply voltage output by the first power supply of the electronic device is greater than a predetermined voltage, the second power supply of the electronic device supplies power.

Optionally, when the electronic device is turned on, the second power supply of the electronic device supplies power.

Optionally, the output unit includes: an output device, which reads and outputs the internal signal stored by the storage unit in response to power supplied by the second power supply of the electronic device.

Optionally, the output unit further includes: a regulator, which regulates the voltage of the internal signal output by the output device, and outputs the regulated internal signal.

Optionally, the input signal is a first input signal or a second input signal, and the internal signal is a first internal signal or a second internal signal, wherein the receiving unit generates the first internal signal based on the first input signal, based on The second input signal generates a second internal signal, wherein the first input signal is generated when the input device of the electronic device receives the user's input operation, and the second input signal is generated when the input device of the electronic device does not receive the user's input operation .

Optionally, the receiving unit includes a first switch and a first resistor, wherein the first connection end of the first switch is connected to the first power supply of the electronic device, the control end of the first switch receives the input signal, and the first The signal output by the second connection end of a switch is used as the internal signal, the first end of the first resistor is connected to the first power supply of the electronic device, and the second end of the first resistor is connected to the control end of the first switch.

Optionally, the storage unit includes a capacitor, a second switch, and a second resistor, wherein the first end of the capacitor is connected to the second connection end of the first switch and the second end of the capacitor is grounded, so as to save the The internal signal received by the connection terminal, the control terminal of the second switch is connected to the first power supply of the electronic device, the first connection terminal of the second switch is connected to the first terminal of the capacitor, and the second connection terminal of the second switch is connected to the capacitor. The second terminal, the first terminal of the second resistor is connected to the control terminal of the second switch, and the second terminal is grounded.

Optionally, the output unit includes a third switch and a third resistor, wherein the control end of the third switch is connected to the second power supply of the electronic device, and the first connection end of the third switch is connected to the first end of the capacitor , the second connection terminal of the third switch outputs an internal signal, the first terminal of the third resistor is connected to the control terminal of the third switch, and the second terminal of the third resistor is grounded.

Optionally, the output unit further includes a fourth resistor and a fifth resistor, wherein the first end of the fourth resistor is connected to the second connection end of the third switch, and the second end of the fourth resistor serves as A port for outputting internal signals, the first end of the fifth resistor is connected to the second end of the fourth resistor, and the second end of the fifth resistor is grounded.

Optionally, the first switch and the second switch are switches that are turned on when the control terminal is at a low level and are turned off when it is at a high level, and the third switch is turned on when the control terminal is at a high level and is low A switch that is cut off at level.

Optionally, the first power source is a battery of the electronic device.

Optionally, the input device is a button of the electronic device.

Another aspect of the present invention provides an electronic device, comprising: an input device for generating an input signal; a first power supply; a second power supply for supplying power in response to a power supply voltage output by the first power supply being greater than a predetermined voltage; a circuit for storing user operations , generate an internal signal based on the input signal, use the first power supply to save the internal signal, and output the saved internal signal in response to the power supply of the second power supply; the controller works when the power supply voltage output by the first power supply is greater than a predetermined voltage, and receives the output internal signal, and judge whether to start the electronic device according to the received internal signal.

Optionally, the input device is a button.

Optionally, the first power source is a battery.

Optionally, the controller judges whether to start the operating system of the electronic device according to the received internal signal.

Optionally, the input signal is a first input signal or a second input signal, and the internal signal is a first internal signal or a second internal signal, wherein the circuit for storing user operations generates the first internal signal based on the first input signal A second internal signal is generated based on a second input signal, wherein the first input signal is generated when the input device receives an input operation from the user, and the second input signal is generated when the input device does not receive an input operation from the user.

Optionally, when the internal signal received by the controller is the first internal signal, start the electronic device.

Another aspect of the present invention provides an electronic device, comprising: an input device for generating an input signal; a first power source; a second power source for supplying power when the electronic device is in an on state; a circuit for storing user operations and generating an internal signal based on the input signal , using the first power supply to save the internal signal, and outputting the saved internal signal in response to the power supply of the second power supply; the controller receives the outputted internal signal, and judges whether to turn off the electronic device according to the received internal signal.

Optionally, the input device is a button.

Optionally, the first power source is a battery.

Optionally, the input signal is a first input signal or a second input signal, and the internal signal is a first internal signal or a second internal signal, wherein the circuit for storing user operations generates the first internal signal based on the first input signal A second internal signal is generated based on a second input signal, wherein the first input signal is generated when the input device receives an input operation from the user, and the second input signal is generated when the input device does not receive an input operation from the user.

Optionally, when the cable signal of the test cable used to test the electronic device is not detected, the controller receives the output internal signal, and judges whether to close the electronic device according to the received internal signal; When the cable signal is used, the controller does not receive the output internal signal.

Optionally, when the internal signal received by the controller is the second internal signal, the electronic device is turned off.

According to the circuit for storing user operations of an electronic device and the electronic device with the circuit of the present invention, the electronic device can know whether the user has performed a key operation on the electronic device by reading the internal signal output by the circuit, so that when the electronic device When the device receives external charging so that the voltage of the battery reaches the starting voltage, the electronic device is automatically turned on, or the electronic device is automatically turned off when the electronic device is turned on by mistake.

Description of drawings

The above-mentioned and other objects, features and advantages of the present invention will become more clear through the following detailed description in conjunction with the accompanying drawings, wherein:

FIG. 1 shows a block diagram of a circuit for saving user operations of an electronic device according to an exemplary embodiment of the present invention.

FIG. 2 shows a block diagram of a saving unit in the circuit for saving user operations of an electronic device in FIG. 1 according to an exemplary embodiment of the present invention.

FIG. 3 illustrates a block diagram of an output unit in the circuit for saving user operations of an electronic device of FIG. 1 according to an exemplary embodiment of the present invention.

FIG. 4 illustrates a circuit diagram of a circuit for saving user operations of an electronic device according to an exemplary embodiment of the present invention.

FIG. 5 shows a package diagram of a circuit for saving user operations of an electronic device according to an exemplary embodiment of the present invention.

FIG. 6 shows a block diagram of a conventional electronic device without a circuit for saving user operations.

FIG. 7 illustrates a block diagram of an electronic device having a circuit for saving user operations according to an exemplary embodiment of the present invention.

FIG. 8 illustrates a circuit diagram of an electronic device having a circuit for saving user operations according to an exemplary embodiment of the present invention.

FIG. 9 illustrates a block diagram of an electronic device having a circuit for saving user operations according to another exemplary embodiment of the present invention.

FIG. 10 illustrates a circuit diagram of an electronic device having a circuit for saving user operations according to another exemplary embodiment of the present invention.

detailed description

Various example embodiments will now be described more fully with reference to the accompanying drawings, in which some example embodiments are shown, wherein like numerals refer to like parts throughout.

FIG. 1 shows a block diagram of a circuit for saving user operations of an electronic device according to an exemplary embodiment of the present invention.

As shown in FIG. 1 , a circuit 100 for saving user operations of an electronic device according to the present invention includes: a receiving unit 110 , a saving unit 120 , and an output unit 130 .

The receiving unit 110 receives an input signal generated by an input device of the electronic device, and generates an internal signal based on the input signal. Specifically, the input signal generated by the input device of the electronic device may be the first input signal or the second input signal. For example, the first input signal is generated when the input device of the electronic device receives the user's input operation, and the second input signal is generated when the input device of the electronic device does not receive the user's input operation. Correspondingly, the internal signal generated by the receiving unit 110 may be a first internal signal or a second internal signal. For example, when the input device generates the first input signal, the receiving unit 110 can generate the first internal signal based on the first input signal generated by the input device of the electronic device; when the input device generates the second input signal, the receiving unit 110 can generate the first internal signal based on the electronic A second input signal generated by the input means of the device generates a second internal signal.

As an example, the input device of the electronic device may be a key of the electronic device. For example, the input device is the power button of the electronic device, and the user's input operation is the user's pressing operation on the power button. When the power button receives the user's pressing operation, a first input signal is generated, and the receiving unit 110 can generate a first input signal based on the first input signal. The first internal signal generates the second input signal when the power button does not receive the user's pressing operation, and the receiving unit 110 can generate the second internal signal based on the second input signal.

The saving unit 120 receives the internal signal from the receiving unit 110, and saves the received internal signal using the first power source of the electronic device. Here, the first power source may be a battery of the electronic device. As an example, the saving unit 120 may receive the first internal signal or the second internal signal from the receiving unit 110 and save the received first internal signal or the second internal signal using the first power source.

The output unit 130 reads and outputs the internal signal saved by the saving unit 120 in response to power supply of the second power supply of the electronic device. Here, the second power supply may be provided by a power management integrated circuit (power management IC) of the electronic device, and when the power management IC starts to work, the second power supply is switched from a power-off state to a power-on state. Specifically, when the power supply voltage output by the first power supply of the electronic device is greater than the predetermined voltage, the second power supply of the electronic device starts to supply power; when the power supply voltage output by the first power supply of the electronic device is not greater than the predetermined voltage, the second power supply of the electronic device 2. The power supply is in a power-off state. Here, when the battery of the electronic device is charged, and the power supply voltage output by the first power supply of the electronic device is greater than a predetermined voltage, the power management IC of the electronic device works, and the second power supply of the electronic device supplies power, or, when the electronic device is in the on state , the second power supply of the electronic device supplies power. As an example, the predetermined voltage may be a battery voltage that satisfies the power-on condition of the electronic device. For example, for electronic equipment such as mobile phones and palmtop computers, the battery voltage that makes them meet the power-on condition is generally 3.3V. state, when the battery of the electronic device receives external power supply so that the supply voltage of the first power supply is greater than 3.3V, the second power supply of the electronic device starts to supply power.

FIG. 2 shows a block diagram of a saving unit 120 in the circuit for saving user operations of an electronic device of FIG. 1 according to an exemplary embodiment of the present invention.

As shown in FIG. 2 , the storage unit 120 includes: a storage device 121 and a reset device 122 .

The saver 121 receives an internal signal from the receiving unit 110 and saves the received internal signal in response to power supply of the first power supply of the electronic device. The saver 121 may be any circuit or device capable of saving a signal, for example, a capacitor, an RS flip-flop, and the like.

The resetter 122 clears the internal signal saved in the saver 121 in response to power-off of the first power supply of the electronic device. For example, when the battery of the electronic device is removed and the first power supply is powered off, the resetter 122 will clear the internal signals stored in the saver 121 .

FIG. 3 illustrates a block diagram of the output unit 130 in the circuit for saving user operations of an electronic device of FIG. 1 according to an exemplary embodiment of the present invention.

As shown in FIG. 3 , the output unit 130 may include: an output device 131 and a regulator 132 .

The outputter 131 reads and outputs the internal signal saved by the saving unit 120 in response to the power supply of the second power supply of the electronic device. The saver 131 can be any circuit or device capable of reading and outputting signals, for example, a triode, a field effect transistor, a thyristor, and the like.

The adjuster 132 adjusts the voltage of the internal signal output by the outputter 131, and outputs the adjusted internal signal. By adjusting the voltage of the output internal signal through the regulator 131, the circuit 100 for storing user operations can meet the electrical requirements of different electronic devices. It should be understood that in certain cases, the output unit 130 may not include the regulator 132, for example, when the voltage of the internal signal output by the output unit 131 meets the electrical requirements of a specific electronic device, the output unit 130 may be simplified to include only the output unit 131 output unit.

Referring again to FIG. 1 , the receiving unit 110 in the circuit 100 for saving user operations of an electronic device according to the present invention may include a first switch and a first resistor. Specifically, the first connection terminal of the first switch is connected to the first power supply of the electronic device, the control terminal of the first switch receives the input signal, and the signal output by the second connection terminal of the first switch is used as the internal signal, The first end of the first resistor is connected to the first power supply of the electronic device, and the second end of the first resistor is connected to the control end of the first switch. Here, the first switch is a switch that is turned on when the control terminal is at a low level and is turned off when it is at a high level, for example, a PNP-type triode, a P-type field effect transistor (PMOS), and the like.

The saving unit 120 may include a capacitor, a second switch, and a second resistor. Specifically, the first end of the capacitor is connected to the second connection end of the first switch and the second end of the capacitor is grounded to save the internal signal received from the second connection end, and the control end of the second switch is connected to the electronic device. The first power supply, the first connection end of the second switch is connected to the first end of the capacitor, the second connection end of the second switch is connected to the second end of the capacitor, and the first end of the second resistor is connected to the second end of the second switch. The control terminal and the second terminal are grounded. Here, the second switch is a switch that is turned on when the control terminal is at a low level and is turned off when it is at a high level, for example, a PNP transistor, PMOS, and the like.

The output unit 130 may include a third switch, a third resistor. Specifically, the control end of the third switch is connected to the second power supply of the electronic device, the first connection end of the third switch is connected to the first end of the capacitor, the second connection end of the third switch outputs an internal signal, and the third resistor The first terminal of the resistor is connected to the control terminal of the third switch, and the second terminal of the third resistor is grounded. In addition, the output unit 130 may also include a fourth resistor and a fifth resistor, wherein the first end of the fourth resistor is connected to the second connection end of the third switch, and the second end of the fourth resistor is used as a A port for outputting an internal signal, the first end of the fifth resistor is connected to the second end of the fourth resistor, and the second end of the fifth resistor is grounded. Here, the third switch is a switch that is turned on when the control terminal is at a high level and is turned off when it is at a low level, for example, an NPN transistor, an N-type field effect transistor (NMOS), and the like.

In the following, with reference to FIG. 4 , the first switch is a PNP-type first triode, the second switch is a PNP-type second triode, and the third switch is an N-type field effect transistor as an example to illustrate the present invention. A circuit structure of a circuit 100 for saving user operations of an electronic device. Here, the first connection end of the first switch is the emitter of the first triode, the control end of the first switch is the base of the first triode, and the second connection end of the first switch is the first triode collector. The control terminal of the second switch is the base of the second transistor, the first connection terminal of the second switch is the emitter of the second transistor, and the second connection terminal of the second switch is the collector of the second transistor. electrode. The control terminal of the third switch is the gate of the field effect transistor, the first connection terminal of the third switch is the drain of the field effect transistor, and the second connection terminal of the third switch is the source of the field effect transistor.

FIG. 4 illustrates a circuit diagram of a circuit for saving user operations of an electronic device according to an exemplary embodiment of the present invention.

As shown in FIG. 4 , in an example, the receiving unit 110 may include a first transistor Q1 and a first resistor R1 . The emitter of the first triode Q1 is connected to the first power supply VBAT of the electronic equipment, the base of the first triode Q1 receives the input signal generated by the input device of the electronic equipment, and the collector of the first triode Q1 outputs signal as the internal signal. A first end of the first resistor R1 is connected to the first power supply VBAT of the electronic device, and a second end of the first resistor R1 is connected to the base of the first transistor Q1. Specifically, when the base of the first transistor Q1 receives the above-mentioned first input signal (low level signal), the first transistor Q1 is turned on, and the collector of the first transistor Q1 A high-level signal is output as the first internal signal. When the base of the first transistor Q1 receives the aforementioned second input signal (high level signal), the collector of the first transistor Q1 outputs a low level signal as the second internal signal.

The storage unit 120 may include a capacitor C1, a second transistor Q2, and a second resistor R2. The first end of the capacitor C1 is connected to the collector of the first transistor Q1 and the second end of the capacitor C1 is grounded for storing the internal signal received from the collector of the first transistor Q1. The base of the second transistor Q2 is connected to the first power supply VBAT of the electronic device, the emitter of the second transistor Q2 is connected to the first end of the capacitor C1, and the collector of the second transistor Q2 is connected to the capacitor C1 the second end of . The first terminal of the second resistor R2 is connected to the base of the second transistor Q2, and the second terminal is grounded.

Specifically, when the capacitor C1 receives a high-level first internal signal from the collector of the first triode Q1, the capacitor C1 charges and stores the high-level signal in the form of a capacitor voltage. When the collector of the transistor Q1 receives the low-level second internal signal, the capacitor C1 does not charge and stores the low-level signal in the form of capacitor voltage. When the battery of the electronic device is removed, the first power supply VBAT is powered off, the second transistor Q2 is turned on, and the capacitor C1 is discharged, so that the voltage stored in the capacitor C1 can be cleared.

The output unit 130 may include a field effect transistor Q3, a third resistor R3, a fourth resistor R5, and a fifth resistor R4. The gate of the field effect transistor Q3 is connected to the second power supply VCC of the electronic device, the drain of the field effect transistor Q3 is connected to the first end of the capacitor C1, and the source of the field effect transistor Q3 is connected to the first end of the fourth resistor R5. end. A first end of the third resistor R3 is connected to the gate of the field effect transistor Q3, and a second end of the third resistor R3 is grounded. The second end of the fourth resistor R5 serves as a port for outputting internal signals. A first end of the fifth resistor R4 is connected to a second end of the fourth resistor R5, and a second end of the fifth resistor R4 is grounded.

Specifically, when the second power supply VCC supplies power, the field effect transistor Q3 is turned on, so that the capacitor voltage stored in the capacitor C1 can be output. The fourth resistor R5 and the fifth resistor R4 can divide the capacitor voltage output by the field effect transistor Q3, and by adjusting the resistance values of the fourth resistor R5 and the fifth resistor R4, the voltage of the output internal signal can be made Meet the electrical requirements of different electronic equipment. In addition, the fourth resistor R5 also has the function of prolonging the discharge time of the capacitor C1. It should be understood that in certain cases, the output unit 130 may not include the fourth resistor R5 and the fifth resistor R4, for example, when the voltage of the internal signal output by the source of the field effect transistor Q3 can meet the electrical requirements of a specific electronic device , the output unit 130 can be simplified as an output unit including only the field effect transistor Q3 and the third resistor R3.

It should be understood that the circuit for storing user operations of an electronic device of the present invention is not limited to the circuit for storing user operations of an electronic device shown in FIG. 4 , and other circuits capable of realizing the same function may also be used.

In practical applications, the circuit 100 for storing user operations of an electronic device of the present invention can be simplified and packaged as a circuit module with 5 pins. An example of simply packaging the circuit 100 for saving user operations of an electronic device according to the present invention into a circuit module with 5 pins will be described below based on FIG. 5 . FIG. 5 shows a package diagram of a circuit 100 for saving user operations of an electronic device according to an exemplary embodiment of the present invention.

As shown in FIG. 5 , the circuit 100 for storing user operations of an electronic device can receive a first power supply and a second power supply through a pin VBAT and a pin VCC respectively. The input signal generated by the input device of the electronic device is received through the Input pin, the internal signal is output through the Output pin, and the ground is grounded through the GND pin. The encapsulated circuit module can be more conveniently applied in electronic equipment.

It should be understood that the circuit 100 for saving user operations of an electronic device according to the present invention can be applied to various electronic devices (such as mobile phones, tablet computers, PDAs, game consoles, etc.) circuit or chip, or as part of a power management circuit or chip.

For existing electronic devices (such as mobile phones, tablet computers, etc.), when the battery is in the state of over-discharge (the battery voltage is lower than the voltage that makes the electronic device meet the power-on condition), even if the power button of the electronic device receives the user's Press the operation, the power management IC that controls the electronic device to turn on will not work, so the electronic device will not start. If the user needs to start the electronic device, the electronic device needs to be connected to an external power source to charge the battery. Since the existing electronic device does not have a circuit for storing user operations, the charged electronic device cannot press the power button according to the user's execution. The operation is automatically turned on, so when the voltage of the battery is greater than the voltage that meets the power-on condition of the electronic device, the user needs to press the power button again to start the electronic device. However, the user does not know how long the battery voltage will meet the power-on requirements after charging, so it is necessary to try to press the power button every once in a while. Repeated pressing operations lead to poor user experience.

FIG. 6 shows a block diagram of a conventional electronic device without a circuit for saving user operations.

As shown in FIG. 6 , in existing electronic devices, the power management IC 400 directly reads the input signal generated by the power key 200 . However, when the battery of the electronic device is in an over-discharged state, the power management IC 400 does not work, and cannot obtain the input signal generated by the user pressing the power button 200 , so the electronic device cannot be started for the user. The power management IC 400 can receive the input signal generated by the power key 200 only when the electronic device is connected to an external power source so that the voltage of the battery reaches a predetermined voltage and the power key 200 receives the user's pressing operation again. In this case, when the power management IC 400 receives an input signal generated by pressing the power key 200 by the user, the power management IC 400 supplies power to circuit units such as the controller 500 in the electronic device, thereby turning on the electronic device.

FIG. 7 illustrates a block diagram of an electronic device having a circuit for saving user operations according to an exemplary embodiment of the present invention.

As shown in FIG. 7 , an electronic device with a circuit for storing user operations according to an exemplary embodiment of the present invention includes: an input device 200, a first power supply 300, a second power supply 400, a circuit 100 for storing user operations, and a controller 500 .

The input device 200 generates input signals. Specifically, the input signal generated by the input device 200 may be the first input signal or the second input signal. As an example, the input device 200 may be a key of an electronic device, for example, a power key of the electronic device. The first input signal may be generated when the power key is pressed by the user, and the second input signal may be generated when the power key is not pressed by the user.

The first power source 300 may be a battery of an electronic device.

The second power supply 400 may supply power in response to the power supply voltage output by the first power supply 300 being greater than a predetermined voltage. For example, when the battery of the electronic device receives external power so that the voltage of the battery is higher than the voltage satisfying the power-on condition of the device, the power management IC of the electronic device starts to work, so that the second power supply 400 of the electronic device starts to supply power.

The circuit 100 for saving a user operation may generate an internal signal based on an input signal, save the internal signal using the first power source 300 , and output the saved internal signal in response to power supplied by the second power source 400 . Specifically, the internal signal may be a first internal signal or a second internal signal. As an example, the circuit 100 for storing user operations may generate a first internal signal based on a first input signal, and generate a second internal signal based on a second input signal.

The controller 500 can work when the power supply voltage output by the first power supply 300 is greater than a predetermined voltage, and receives an internal signal output by the circuit 100 for storing user operations, and judges whether to start the electronic device according to the received internal signal. Specifically, the controller 500 may determine whether to start the operating system of the electronic device according to the received internal signal. As an example, when the internal signal received by the controller 500 is the first internal signal, the controller 500 starts the operating system of the electronic device.

It can be seen that an electronic device with a circuit for saving user operations according to an exemplary embodiment of the present invention can record the user's pressing operation on the power button when the battery is in an over-discharge state, so that when the battery of the electronic device is charged for a period of time When the voltage of the battery is higher than the voltage required for the electronic device to be turned on, the user does not need to repeatedly press the power button to automatically start the operating system of the electronic device, which enhances the user experience.

FIG. 8 illustrates a circuit diagram of an electronic device having a circuit for saving user operations according to an exemplary embodiment of the present invention.

As shown in FIG. 8 , when the battery of the electronic device is in an over-discharged state, if the user wants to start the electronic device and presses the power button of the electronic device, the power management IC400 of the electronic device will fail because the battery voltage is too low. does not work, resulting in the electronic equipment not starting properly. However, the circuit 100 for storing user operations according to the present invention can receive the first input signal generated by the power key 200 through the Input pin, and generate the first internal signal based on the first input signal, and use the battery voltage 300 to store the first internal signal . When the electronic device is charged by an external power source so that the voltage of the battery is greater than the voltage that satisfies the power-on condition of the electronic device, the second power supply of the electronic device starts to supply power. At this time, the circuit 100 for saving user operations can output the saved first internal signal. The electronic device can learn that the user has pressed the power button through the controller 500 reading the first internal signal output by the Output pin, so as to control and start the operating system of the electronic device.

In addition, when the battery voltage of the electronic device is greater than a predetermined voltage, the first input signal generated by the input device (power key 200 ) will be directly read by the power management IC 400, and the power management IC 400 controls the electronic device to be turned on. At this time, the electronic device will not read the internal signal output by the circuit 100 that saves the user's operation through the controller 500 . Moreover, when the electronic device is turned off, the electronic device will send a low-level signal to the Output pin of the circuit 100 for storing user operations through the controller 500, thereby clearing the internal signals stored in the circuit 100 for storing user operations and resetting the circuit. For example, the electronic device can read the internal signal output by the Output pin through the GPIO (General Purpose Input Output Port) of the controller 500 or send a low level signal to the Output pin.

FIG. 9 illustrates a block diagram of an electronic device having a circuit for saving user operations according to another exemplary embodiment of the present invention.

As shown in FIG. 9, an electronic device with a circuit for storing user operations according to an exemplary embodiment of the present invention includes: an input device 200, a first power supply 300, a second power supply 400, a circuit 100 for storing user operations, and a controller 600. .

The input device 200 generates input signals. Specifically, the input signal generated by the input device 200 may be the first input signal or the second input signal. As an example, the input device 200 may be a key of an electronic device, for example, a power key of the electronic device. The first input signal may be generated when the power key is pressed by the user, and the second input signal may be generated when the power key is not pressed by the user.

The first power source 300 may be a battery of an electronic device.

The second power supply 400 can provide power when the electronic device is turned on. For example, when the electronic device is turned on, the power management IC of the electronic device works, so that the second power supply 400 of the electronic device supplies power.

The circuit 100 for saving a user operation may generate an internal signal based on an input signal, save the internal signal using the first power source 300 , and output the saved internal signal in response to power supplied by the second power source 400 . Specifically, the internal signal may be a first internal signal or a second internal signal. As an example, the circuit 100 for storing user operations may generate a first internal signal based on a first input signal, and generate a second internal signal based on a second input signal.

The controller 600 may receive an internal signal output by the circuit 100 for storing user operations, and judge whether to turn off the electronic device according to the received internal signal. As an example, when the internal signal received by the controller 600 is the second internal signal, the controller 600 turns off the electronic device.

The electronic device shown in FIG. 9 with a circuit for storing user operations can determine that the electronic device is turned on by mistake in some circumstances, and can turn off the electronic device that is turned on by mistake.

FIG. 10 illustrates a circuit diagram of an electronic device having a circuit for saving user operations according to another exemplary embodiment of the present invention.

As shown in FIG. 10 , when the electronic device is turned on, the electronic device can read the internal signal output by the circuit 100 for storing user operations through the controller 600 to determine whether the power key 200 has received the user's pressing operation, thereby determining whether the electronic device Whether the opening of the electronic device is false opening, and then determine whether to close the electronic device. For example, the electronic device can use the GPIO of the controller 600 to read the internal signal output by the Output pin of the circuit 100 that saves the user's operation. When the electronic device reads the second internal signal (low level signal), it can determine the power supply The input signal generated by the key 200 is the second input signal, that is, the power key 200 does not receive the user's pressing operation, and the electronic device is turned on by mistake. At this time, the electronic device can be turned off through the controller 600 .

For example, as users have higher and higher quality requirements for electronic equipment, the electronic equipment must pass various tests before the electronic equipment leaves the factory. In general, when an electronic device is connected to a test device through a test cable, the electronic device will be automatically turned on to perform a corresponding test.

However, in some cases, the electronic device will be turned on due to wrong plugging and unplugging of the test cable. At this time, it is not turned on by the user's intention, and it is better to turn off the electronic device.

According to an exemplary embodiment of the present invention, an electronic device with a circuit for saving user operations can use the battery voltage 300 to record the user's pressing operation on the power button 200 through the circuit 100 for saving user operations, so that when the electronic device is turned on, the user operations can be saved The circuit 100 of the circuit 100 outputs the saved internal signal. When the electronic device does not detect the cable signal, the electronic device can use the controller 600 to read the internal signal saved by the circuit 100 that saves the user's operation to determine whether the power button 200 has received the user's press. operation, and then determine whether the current opening is a false opening, and when it is determined that the opening of the electronic device is a false opening, the electronic device can turn off the electronic device through the controller 600 . For example, the controller 600 controls the power management IC 400 to cut off the power supply to each circuit unit in the electronic device, thereby shutting down the electronic device.

In addition, when the electronic device detects the cable signal, the electronic device will not read the internal signal output by the circuit 100 for storing user operations. Moreover, when the electronic device is turned off, the electronic device will send a low-level signal to the Output pin of the circuit 100 for storing user operations through the controller 600, thereby clearing the internal signals stored in the circuit 100 for storing user operations and resetting the circuit.

According to the circuit for storing user operations of an electronic device and the electronic device having the circuit of the present invention, the input signal generated by the user's key operation can be effectively stored as an internal signal, and can be read by the controller of the electronic device The internal signal determines whether to turn on or turn off the electronic device according to the internal signal, so that the electronic device can be turned on or off effectively according to the user's wishes, and the user's experience with the electronic device is enhanced.

While the invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that changes may be made in form and detail without departing from the spirit and scope of the invention as defined by the claims. various changes.

Claims (25)

1. A kind of 1. circuit for preserving user's operation for electronic equipment, it is characterised in that including：

   Receiving unit, input signal caused by the input unit of electronic equipment is received, and internal signal is produced based on input signal；

   Storage unit, internal signal is received from receiving unit, and the inside that receives is preserved using the first power supply of electronic equipment Signal；

   Output unit, the power supply in response to the second source of electronic equipment are read and export the internal signal of storage unit preservation,

   Wherein, the input signal is the first input signal or the second input signal, and the internal signal is the first internal signal Or second internal signal,

   Wherein, receiving unit is based on the first input signal and produces the first internal signal, is produced based on the second input signal in second Portion's signal, wherein, the first input signal is produced when the input unit of electronic equipment receives the input operation of user, works as electronics The input unit of equipment produces the second input signal when being not received by the input operation of user.
2. 2. circuit as claimed in claim 1, wherein, the storage unit includes：

   Conservator, internal signal is received from receiving unit, and received in response to the power supply preservation of the first power supply of electronic equipment Internal signal；

   The internal signal preserved in conservator is removed in restorer, the power-off in response to the first power supply of electronic equipment.
3. 3. circuit as claimed in claim 1, wherein, when the supply voltage that the first power supply of electronic equipment exports is more than predetermined electricity During pressure, the second source power supply of electronic equipment, when the supply voltage that the first power supply of electronic equipment exports is not more than predetermined voltage When, the second source power-off of electronic equipment.
4. 4. circuit as claimed in claim 3, wherein, when the battery of electronic equipment is electrically charged, and the first power supply of electronic equipment When the supply voltage of output is more than predetermined voltage, the second source power supply of electronic equipment.
5. 5. circuit as claimed in claim 3, wherein, when electronic equipment is in opening, the second source of electronic equipment Power supply.
6. 6. circuit as claimed in claim 1, wherein, the output unit includes：

   Follower, the power supply in response to the second source of electronic equipment are read and export the internal signal of storage unit preservation.
7. 7. circuit as claimed in claim 6, wherein, the output unit also includes：

   Adjuster, the voltage of the internal signal of follower output is adjusted, and exports the internal signal after regulation.
8. 8. circuit as claimed in claim 1, wherein, the receiving unit includes first switch and first resistor device,

   Wherein, the first connection end of first switch is connected to the first power supply of electronic equipment, and the control terminal of first switch receives institute State input signal, the signal of the second connection end output of first switch as the internal signal,

   The first end of first resistor device is connected to the first power supply of electronic equipment, and the second end of first resistor device is connected to first and opened The control terminal of pass.
9. 9. circuit as claimed in claim 8, wherein, the storage unit includes capacitor, second switch, second resistance device,

   Wherein, the first end of capacitor is connected to the second connection end of first switch and the second end ground connection of capacitor, to protect The internal signal received from second connection end is deposited,

   The control terminal of second switch is connected to the first power supply of electronic equipment, and the first connection end of second switch is connected to capacitor First end, the second connection end of second switch is connected to the second end of capacitor,

   The first end of second resistance device is connected to the control terminal of second switch, the second end ground connection.
10. 10. circuit as claimed in claim 9, wherein, the output unit includes the 3rd switch, 3rd resistor device,

    Wherein, the control terminal of the 3rd switch is connected to the second source of electronic equipment, and the first connection end of the 3rd switch is connected to The first end of capacitor, the second connection end output internal signal of the 3rd switch,

    The first end of 3rd resistor device is connected to the control terminal of the 3rd switch, the second end ground connection of 3rd resistor device.
11. 11. circuit as claimed in claim 10, wherein, the output unit also includes the 4th resistor, the 5th resistor,

    Wherein, the first end of the 4th resistor is connected to the second connection end of the 3rd switch, the second end conduct of the 4th resistor For exporting the port of internal signal,

    The first end of 5th resistor is connected to the second end of the 4th resistor, the second end ground connection of the 5th resistor.
12. 12. circuit as claimed in claim 11, wherein, the first switch and second switch are when being low level at control terminal Conducting and the switch ended when be high level, conducting that the 3rd switch is when being high level at control terminal and when being low level section Switch only.
13. 13. circuit as claimed in claim 1, wherein, the first power supply is the battery of the electronic equipment.
14. 14. circuit as claimed in claim 1, wherein, the input unit is the button of the electronic equipment.
15. A kind of 15. circuit for preserving user's operation for electronic equipment, it is characterised in that including：

    Receiving unit, input signal caused by the input unit of electronic equipment is received, and internal signal is produced based on input signal；

    Storage unit, internal signal is received from receiving unit, and the inside that receives is preserved using the first power supply of electronic equipment Signal；

    Output unit, the power supply in response to the second source of electronic equipment are read and export the internal signal of storage unit preservation,

    Wherein, the output unit includes：

    Follower, the power supply in response to the second source of electronic equipment are read and export the internal signal of storage unit preservation.
16. 16. a kind of electronic equipment, including：

    Input unit, produce input signal；

    First power supply；

    Second source, it is more than predetermined voltage in response to the supply voltage of the first power supply output and is powered；

    The circuit described in any one in claim 1-15, internal signal is produced based on input signal, utilizes the first power supply Internal signal is preserved, and the internal signal preserved is exported in response to the power supply of second source；

    Controller, it is operated when the supply voltage of the first power supply output is more than predetermined voltage, the internal signal of Rreceive output, And judged whether to start the electronic equipment according to the internal signal of reception,

    Wherein, the input signal is the first input signal or the second input signal, and the internal signal is the first internal signal Or second internal signal,

    Wherein, the circuit described in any one in claim 1-15 is based on the first input signal and produces the first internal signal, Second internal signal is produced based on the second input signal, wherein, the is produced when input unit receives the input operation of user One input signal, the second input signal is produced when input unit is not received by the input operation of user.
17. 17. electronic equipment as claimed in claim 16, wherein, the input unit is button.
18. 18. electronic equipment as claimed in claim 16, wherein, first power supply is battery.
19. 19. electronic equipment as claimed in claim 16, wherein, the controller judges whether according to the internal signal received Start the operating system of the electronic equipment.
20. 20. electronic equipment as claimed in claim 16, wherein, when the internal signal that the controller receives is inside first During signal, start the electronic equipment.
21. 21. a kind of electronic equipment, including：

    Input unit, produce input signal；

    First power supply；

    Second source, powered when electronic equipment is in opening；

    The circuit described in any one in claim 1-15, internal signal is produced based on input signal, utilizes the first power supply Internal signal is preserved, and the internal signal preserved is exported in response to the power supply of second source；

    Controller, the internal signal of Rreceive output, and judged whether according to the internal signal of reception to close the electronic equipment,

    Wherein, the input signal is the first input signal or the second input signal, and the internal signal is the first internal signal Or second internal signal,

    Wherein, the circuit described in any one in claim 1-15 is based on the first input signal and produces the first internal signal, Second internal signal is produced based on the second input signal, wherein, the is produced when input unit receives the input operation of user One input signal, the second input signal is produced when input unit is not received by the input operation of user.
22. 22. electronic equipment as claimed in claim 21, wherein, the input unit is button.
23. 23. electronic equipment as claimed in claim 21, wherein, first power supply is battery.
24. 24. electronic equipment as claimed in claim 21, wherein, when not detecting the survey for being tested electronic equipment When trying the cable signal of cable, the internal signal of controller Rreceive output, and judge whether to close according to the internal signal of reception The electronic equipment；When detecting the cable signal, the internal signal of controller not Rreceive output.
25. 25. electronic equipment as claimed in claim 21, wherein, when the internal signal that the controller receives is inside second During signal, the electronic equipment is closed.