TW202241121A - Set value auto-adjusting device and method thereof - Google Patents

Abstract

A set value auto-adjusting device is provided in the invention. The set value auto-adjusting device comprises a first register circuit, a second register circuit, a control logic circuit and a comparison circuit. The first register circuit stores an increment value and a decrement value. The second register circuit stores a first set value. The control logic circuit is coupled to the first register circuit and the second register circuit, and in response to a trigger event, the control logic circuit determines whether to adjust the first set value according to the increment value and the decrement value. The comparison circuit is coupled to the second register circuit and the control logic circuit. The comparison circuit receives an input value and compares the input value with the first set value to determine whether the input value is larger than or equal to the first set value to generate the trigger event to a CPU or a peripheral device.

Description

Setting value automatic adjustment device and method

The embodiments of the present invention are mainly related to an automatic setting value adjustment technology, especially related to a setting value automatic adjustment technology for judging whether to adjust the setting value according to an increment value or a decrement value according to a trigger event.

When a general electronic device wants to change its setting value, the central processing unit is required to intervene to change the setting value stored in the register of the electronic device. For example, when using an analog-to-digital converter (Analog-to-digital converter, ADC) controller to monitor the voltage on the circuit, two set values will be set as the upper limit and lower for ADC value comparison. Limits to form a monitor window. However, the range of the monitoring window is fixed, and if the range of the monitoring window is to be changed, the central processing unit needs to intervene to change the upper limit value and the lower limit value stored in the register of the ADC controller.

In view of the above-mentioned problems in the prior art, embodiments of the present invention provide an automatic setting value adjustment device and method.

According to an embodiment of the present invention, a set value automatic adjustment device is provided. The set value automatic adjustment device includes a first temporary storage circuit, a second temporary storage circuit, a control logic circuit and a comparison circuit. The first temporary storage circuit stores an increment value and a decrement value. The second temporary storage circuit stores a first setting value. The control logic circuit is coupled to the first temporary storage circuit and the second temporary storage circuit, and determines whether to adjust the first set value according to the increment value or the decrement value according to a trigger event. The comparison circuit is coupled to the second temporary storage circuit and the control logic circuit. The comparison circuit receives an input value, and compares whether the input value is greater than or equal to the first set value, so as to generate the trigger event to a central processing unit or a peripheral device.

According to some embodiments, the second temporary storage circuit further stores a second set value, wherein the first set value is an upper limit value, and the second set value is a lower limit value.

According to some embodiments, the device for automatically adjusting the setting value further includes a comparison circuit. The comparison circuit is coupled to the second register circuit and the control logic circuit. The comparison circuit compares whether the input value is greater than or equal to the upper limit value and whether the input value is less than or equal to the lower limit value, so as to generate the trigger event. When the above-mentioned input value is greater than or equal to the above-mentioned upper limit value, the control logic circuit adds the above-mentioned upper limit value and the above-mentioned lower limit value to the above-mentioned incremental value according to the above-mentioned trigger event, and according to the adjusted above-mentioned upper limit value and the above-mentioned lower limit value, and update the above-mentioned upper limit value and the above-mentioned lower limit value stored in the above-mentioned second temporary storage circuit. When the above-mentioned input value is less than or equal to the above-mentioned lower limit value, the above-mentioned control logic circuit will subtract the above-mentioned decrement value from the above-mentioned upper limit value and the above-mentioned lower limit value according to the above-mentioned trigger event, and then adjust the above-mentioned upper limit value and the above-mentioned lower limit value according to the adjusted limit value, updating the above-mentioned upper limit value and the above-mentioned lower limit value stored in the above-mentioned second temporary storage circuit.

According to some embodiments, when the input value is greater than or equal to the upper limit value, or the input value is less than or equal to the lower limit value, the comparison circuit transmits the trigger event to the central processing unit or peripheral device.

According to some embodiments, the central processing unit adjusts the setting values of the peripheral devices according to the trigger events.

According to some embodiments, the peripheral device adjusts its setting value directly according to the above trigger event.

According to some embodiments, the central processing unit enters a sleep mode after providing initial values of the increment value, the decrement value, the first set value, and the second set value.

According to some embodiments, the above-mentioned increment value and the above-mentioned decrement value may be the same or different.

An embodiment of the present invention provides a method for automatically adjusting a set value. The setting value automatic adjustment method is suitable for a setting value automatic adjustment device, wherein the above setting value automatic adjustment device is used to receive an input value and transmit a trigger event to trigger a central processing unit or a peripheral device. The steps of the automatic setting value adjustment method include: using a comparison circuit of the above-mentioned automatic setting value adjustment device to compare whether the above-mentioned input value is greater than or equal to a first setting value, so as to generate the above-mentioned trigger event; A control logic circuit of the device, according to the above-mentioned trigger event, judges whether to adjust the above-mentioned first set value according to an increment value or a decrement value, wherein the above-mentioned increment value and the above-mentioned decrement value are stored in one of the above-mentioned set value automatic adjustment devices. storage circuit, and the first set value is stored in a second temporary storage circuit of the set value automatic adjustment device.

With regard to other additional features and advantages of the present invention, those skilled in the art can make some changes according to the set value automatic adjustment device and method disclosed in the implementation method of this case without departing from the spirit and scope of the present invention obtained with retouching.

What is described in this chapter is the best way to implement the present invention. The purpose is to illustrate the spirit of the present invention and not to limit the protection scope of the present invention. .

FIG. 1 is a block diagram showing an automatic setting value adjustment device 100 according to an embodiment of the present invention. As shown in FIG. 1 , the setting value automatic adjustment device 100 may include at least a first temporary storage circuit 110 , a second temporary storage circuit 120 and a control logic circuit 130 . In addition, it should be noted that the block diagram shown in FIG. 1 is only for the convenience of describing the embodiment of the present invention, but the present invention is not limited to FIG. 1 .

According to an embodiment of the present invention, the set value automatic adjustment device 100 may be an analog-to-digital converter (Analog-to-digital converter, ADC) controller or a pulse-width modulation (Pulse-width modulation, PWM) controller, But the present invention is not limited thereto.

According to an embodiment of the present invention, the first register circuit 110 may include a register (not shown in the figure) for storing an increment value and a decrement value. According to another embodiment of the present invention, the first register circuit 110 may include a first register (not shown) and a second register (not shown), wherein the first register is used to store a The value is incremented and the second register is used to store a decremented value. According to an embodiment of the present invention, the increment value and the decrement value may be the same or different.

According to an embodiment of the present invention, the second temporary storage circuit 120 may include a temporary register (not shown in the figure) for storing a first setting value. According to an embodiment of the present invention, the second temporary storage circuit 120 may include a first temporary register (not shown in the figure) and a second temporary register (not shown in the figure), wherein the first temporary register is used to store a first The setting value and the second register are used to store a second setting value.

According to an embodiment of the present invention, the initial value of the increment value and the decrement value stored in the first temporary storage circuit 110 and the initial value of the first set value and the second set value stored in the second temporary storage circuit 120 are determined by a Provided by a central processing unit (Central Processing Unit, CPU) 300. According to an embodiment of the present invention, when the central processing unit 300 has set the initial value of the increment value and the decrement value stored in the first temporary storage circuit 110 and the first set value and the second set value stored in the second temporary storage circuit 120 After setting the initial value, the CPU 300 can enter a sleep mode.

According to an embodiment of the present invention, the control logic circuit 130 can determine whether to adjust the first value stored in the second temporary storage circuit 120 according to the increment value or the decrement value stored in the first temporary storage circuit 110 according to a received trigger event E _trigger . A setpoint (and a second setpoint). The detailed content will be explained below with Figure 2 as an example.

FIG. 2 is a block diagram showing an automatic setting value adjustment device 200 according to an embodiment of the present invention. The setting value automatic adjustment device 200 is an ADC controller. As shown in FIG. 2 , the setting value automatic adjustment device 200 may include at least a first temporary storage circuit 210 , a second temporary storage circuit 220 , a control logic circuit 230 and a comparison circuit 240 . It should be noted that the block diagram shown in FIG. 2 is only for the convenience of describing the embodiment of the present invention, but the present invention is not limited to FIG. 2 . In addition, the first temporary storage circuit 110, the second temporary storage circuit 120 and the control logic circuit 130 shown in FIG. 1 can be applied to the first temporary storage circuit 210, the second temporary storage circuit 220 and the control logic circuit in FIG. 2 230. In addition, according to an embodiment of the present invention, the control logic circuit 130 shown in FIG. 1 may also include the control logic circuit 230 and the comparison circuit 240 in FIG. 2 .

In this embodiment, the first register circuit 210 can store an increment value and a decrement value. The second temporary storage circuit 220 can store a first set value and a second set value, wherein the first set value can be an upper limit value, and the second set value can be a lower limit value. The upper limit and the lower limit can be used to define the range of a monitor window of the set point automatic adjustment device 200 (ADC controller).

In this embodiment, when the comparison circuit 240 receives an input value D _in converted by an analog-to-digital converter (ADC) (not shown in the figure) (for example: a digital value converted from the input voltage value), the comparison circuit 240 The received input value D _in is compared with the upper limit value and the lower limit value to compare whether the input value D _in is greater than or equal to the upper limit value and whether the input value D _in is less than or equal to the lower limit value. When the input value D _in is greater than or equal to the upper limit, or the input value D _in is less than or equal to the lower limit, the comparison circuit 240 generates a trigger event E _trigger and transmits the trigger event E _trigger to the control logic circuit 230 . According to an embodiment of the present invention, when the input value D _in is greater than or equal to the upper limit value, the trigger event E _trigger will be a first value, and when the input value D _in is less than or equal to the lower limit value, the trigger event E _trigger will be Coordinates a second value.

After the control logic circuit 230 receives the trigger event E _trigger , the control logic circuit 230 can know that the input value D _in is greater than or equal to the upper limit value or the input value D _in is less than or equal to the lower limit value according to the trigger event E _trigger . When the input value D _in is greater than or equal to the upper limit value, the control logic circuit 230 will add the upper limit value and the lower limit value to the incremental value, and return the adjusted upper limit value and lower limit value to the second temporary storage The circuit 220 is used to update the upper limit value and the lower limit value stored in the second temporary storage circuit 220 . When the input value D _in is less than or equal to the lower limit value, the control logic circuit 230 will subtract the decrement value from the upper limit value and the lower limit value, and pass the adjusted upper limit value and lower limit value to the second temporary storage The circuit 220 is used to update the upper limit value and the lower limit value stored in the second temporary storage circuit 220 . Therefore, in this embodiment, the setting value automatic adjusting device 200 (ADC controller) can automatically adjust the range of the monitoring window (ie adjust the upper limit and the lower limit) according to the received trigger event E _trigger . That is to say, in this embodiment, the setting value automatic adjustment device 200 (ADC controller) can automatically adjust the set value according to the received trigger event E _trigger without the intervention of the central processing unit (that is, the central processing unit does not need to be woken up). To adjust the scope of the monitoring window, thus achieving the effect of power saving.

After the upper limit value and the lower limit value stored in the second temporary storage circuit 220 are updated, the comparison circuit 240 will judge the newly received input value D _in according to the updated upper limit value and lower limit value.

In this embodiment, the comparison circuit 240 can also transmit the trigger event E _trigger to the central processing unit or a peripheral device (for example: PWM controller, digital-to-analog converter (Digital-to-analog converter, DAC) controller, peripheral Direct memory access (Peripheral Direct Memory Access controller, PDMA) controller, timer (Timer), general-purpose input and output (General-Purpose Input/Output, GPIO) or analog comparator (Analog Comparator, ACMP) controller , but the present invention is not limited thereto).

According to an embodiment of the present invention, the central processing unit can adjust the setting values of the peripheral devices according to the trigger event E _trigger . Figure 3 will be used below to illustrate.

According to another embodiment of the present invention, the peripheral device may directly receive the trigger event E _trigger from the setting value automatic adjustment device 200 , and adjust its setting value according to the trigger event E _trigger . Figure 4 will be used below to illustrate.

FIG. 3 is a schematic diagram showing adjusting a setting value of a peripheral device according to an embodiment of the present invention. As shown in FIG. 3, after the comparison circuit 240 sends a trigger event E _trigger to the central processing unit 300, the central processing unit 300 can adjust the peripheral device 400 (for example: a PWM controller) according to the received trigger event E _trigger , but the present invention is not limited thereto) one of the duty setting values.

FIG. 4 is a schematic diagram showing adjusting a setting value of a peripheral device according to another embodiment of the present invention. As shown in FIG. 4 , the comparing circuit 240 can directly transmit a trigger event E _trigger to the peripheral device 400 (eg, a PWM controller, but the present invention is not limited thereto). After receiving the trigger event E _trigger , the peripheral device 400 can directly adjust its duty setting value according to the received trigger event E _trigger . Specifically, as shown in FIG. 4 , the peripheral device 400 may include a third temporary storage circuit 410 , a fourth temporary storage circuit 420 and a second control logic circuit 430 . In this embodiment, the first temporary storage circuit 110, the second temporary storage circuit 120 and the control logic circuit 130 shown in FIG. 1 can be applied to the third temporary storage circuit 410 and the fourth temporary storage circuit 420 in FIG. 4 and the second control logic circuit 430 .

The third temporary storage circuit 410 can be used to store an increment value and a decrement value. The fourth temporary storage circuit 420 can be used to store a duty setting value of the peripheral device 400 . The second control logic circuit 430 can determine whether to add the increment value to the duty set value or to subtract the decrement value from the duty set value according to the received trigger event E _trigger . Compared with the architecture in FIG. 3, in this embodiment, the central processing unit 300 sets the initial value of the increment value and the decrement value stored in the third temporary storage circuit 410 and the initial value stored in the fourth temporary storage circuit 420. After initializing the duty setting value, the CPU 300 can enter a sleep mode. That is to say, the CPU 300 does not need to be woken up to adjust the duty settings of the peripheral device 400 . Therefore, in this embodiment, a more power-saving effect can be achieved. Below, an application example will be used to illustrate the operation in Figure 4.

The following application examples will be explained with reference to Figure 4. The example below assumes that the setting value automatic adjustment device 200 (ie, the ADC controller) is implemented to adjust the brightness of an electric lamp through a knob. In this example, when the knob is turned clockwise, the output voltage will increase. Conversely, when the knob is turned counterclockwise, the output voltage will decrease. When the value converted from the ADC (ie, the input value D _in ) is larger, the duty setting value output by the peripheral device 400 (eg, the PWM controller) is larger, so that the brightness of the lamp becomes brighter. Conversely, when the value converted by the ADC is smaller, the duty setting value output by the peripheral device 400 is smaller, so that the brightness of the lamp is dimmed. Firstly, the central processing unit 300 first sets the initial values of the temporary registers of the relevant setting value automatic adjustment device 200 and the peripheral device 400, and then enters the sleep mode. Assume that the initial value of the increment value and decrement value stored by the first temporary storage circuit 210 is 50, the initial value of the upper limit value and the lower limit value stored by the second temporary storage circuit 220 is 600 and 500, the third temporary storage circuit 410 The initial value of the stored increment value and decrement value is 100, and the initial value of the duty setting value stored by the fourth temporary storage circuit 420 is 1000.

When the value converted by the ADC is 550, the generation of the trigger event E _trigger will not be triggered. When the knob is slowly turned clockwise, the value turned out by the ADC will gradually increase. When the value transferred by the ADC is 610, the condition of being greater than the upper limit value will be met. At this time, the control logic circuit 230 will add the upper limit value and the incremental value (ie 600+50=650), and update the upper limit value to 650. In addition, the control logic circuit 230 will add the lower limit value and the increment value (ie, 500+50=550), and update the lower limit value to 550. At this time, the comparison circuit 240 also sends a trigger event E _trigger to the peripheral device 400 . The second control logic circuit 430 will add the duty setting value and the incremental value according to the received trigger event E _trigger (ie 1000 + 100 = 1100), and update the duty setting value to 1100.

When the value transferred from the newly received ADC is 540, the condition of being less than the updated lower limit value will be met. At this time, the control logic circuit 230 will perform a subtraction operation between the lower limit value and the decrement value (ie, 550−50=500), and update the lower limit value to 500. In addition, the control logic circuit 230 performs a subtraction operation between the upper limit value and the decrement value (ie, 650−50=600), and updates the upper limit value to 600. At this time, the comparison circuit 240 also sends a trigger event E _trigger to the peripheral device 400 . The second control logic circuit 430 will subtract the duty setting value from the decrement value (ie 1100−100=1000) according to the received trigger event E _trigger , and update the duty setting value to 1000.

In particular, the above examples are only used to illustrate the embodiments of the present invention, but the present invention is not limited thereto.

FIG. 5 is a flow chart of a method for automatically adjusting a set value according to an embodiment of the present invention. The set value automatic adjustment method is applicable to the set value automatic adjustment device 100 . In step S510, a comparison circuit of the automatic setting value adjustment device 100 compares whether an input value is greater than or equal to a first setting value to generate a trigger event. In step S520, through the control logic circuit of the automatic setting value adjustment device 100, according to the trigger event, it is judged whether to adjust a first setting value according to an increment value or a decrement value, wherein the increment value and decrement value are stored in the set value A first temporary storage circuit of the automatic adjustment device 100 , and the first setting value is stored in a second temporary storage circuit of the automatic setting value adjustment device 100 .

In this embodiment, the second temporary storage circuit can further store a second set value, wherein the first set value can be an upper limit value, and the second set value can be a lower limit value. In this embodiment, the increment value and decrement value may or may not be the same.

In this embodiment, the steps of the method for automatically adjusting the set value may further include that the comparison circuit of the automatic set value adjusting device 100 compares whether the input value is greater than or equal to the upper limit value, and compares whether the input value is less than or equal to the lower limit value , to generate a trigger event. When the input value is greater than or equal to the upper limit value, the control logic circuit adds the upper limit value and the lower limit value to the incremental value according to the trigger event, and updates the stored value in the second temporary value according to the adjusted upper limit value and lower limit value. Store the upper limit and lower limit of the circuit. When the input value is less than or equal to the lower limit value, the control logic circuit will subtract the decrement value from the upper limit value and the lower limit value according to the trigger event, and update the stored in the second temporary value according to the adjusted upper limit value and lower limit value. Store the upper limit and lower limit of the circuit.

In this embodiment, the steps of the automatic setting value adjustment method may further include, when the input value is greater than or equal to the upper limit value, or the input value is less than or equal to the lower limit value, the comparison circuit sends a trigger event to a central processing unit or A peripheral device. In one embodiment, the central processing unit adjusts the setting values of the peripheral devices according to the trigger event. In another embodiment, the peripheral device directly adjusts its setting value according to the trigger event.

In this embodiment, a central processing unit can be used to provide the increment value, the decrement value, the initial value of the first set value and the second set value to the set value automatic adjustment device 100, and then enter into a sleep mode.

FIG. 6 is a flow chart of a method for automatically adjusting setting values according to another embodiment of the present invention. The set value automatic adjustment method is applicable to the set value automatic adjustment device 200 . In step S610, the setting value automatic adjustment device 200 obtains the increment value, the decrement value, the initial value of the first setting value and the second setting value from a central processing unit. The incremental value and the decremental value are stored in a first temporary storage circuit of the automatic setting value adjustment device 200 , and the first and second setting values are stored in a second temporary storage circuit of the automatic setting value adjustment device 200 . In this embodiment, the first set value may be an upper limit value, and the second set value may be a lower limit value.

In step S620, a comparison circuit of the automatic setting value adjustment device 200 compares whether an input value is greater than or equal to an upper limit value to determine whether a trigger event is generated. When the input value is greater than or equal to the upper limit, go to step S630. In step S630, one of the control logic circuits of the set value automatic adjustment device 200 adds the upper limit value and the lower limit value to the incremental value according to the trigger event, and updates the stored value in the second The upper limit and lower limit of the temporary storage circuit.

When the input value is not greater than or equal to the upper limit, go to step S640. In step S640, the comparing circuit compares whether the input value is less than or equal to the lower limit value to determine whether to generate a trigger event. When the input value is less than or equal to the lower limit, go to step S650. In step S650, the control logic circuit subtracts the decrement value from the upper limit value and the lower limit value according to the trigger event, and updates the upper limit value and the lower limit value stored in the second temporary storage circuit according to the adjusted upper limit value and lower limit value lower limit.

According to another embodiment of the present invention, the order of step S620 and step S640 may be reversed.

After the upper limit value and the lower limit value of the second temporary storage circuit are updated, step S660 will be performed. In step S660, the comparison circuit transmits the trigger event to the CPU or a peripheral device.

According to the automatic setting value adjustment method proposed by the present invention, the setting value automatic adjustment device can automatically adjust its setting value without using the central processing unit. Therefore, the effect of power saving will be achieved.

The serial numbers in this specification and the scope of the patent application, such as "first", "second", etc., are only for convenience of description, and there is no sequential relationship between them.

The steps of the methods and algorithms disclosed in the description of the present invention can be directly applied to hardware and software modules or a combination of the two by executing a processor. A software module (including execution instructions and associated data) and other data can be stored in data memory, such as random access memory (RAM), flash memory (flash memory), read only memory (ROM) , Erasable Programmable Read-Only Memory (EPROM), Electronically Erasable Programmable Read-Only Memory (EEPROM), Temporary Register, Hard Disk, Portable Hard Disk, Compact Disk Read-Only Memory (CD- ROM), DVD, or any other computer-readable storage medium format within the skill of the art. A storage medium can be coupled to a machine device, for example, such as a computer/processor (for the convenience of description, it is represented by a processor in this specification), and the above-mentioned processor can read information (such as a program) code), and write the information to the storage medium. A storage medium can integrate a processor. An application specific integrated circuit (ASIC) includes a processor and storage media. A user equipment includes an ASIC. In other words, the processor and the storage medium are included in the user equipment without being directly connected to the user equipment. Furthermore, in some embodiments, any product suitable for a computer program includes a readable storage medium that includes code associated with one or more disclosed embodiments. In some embodiments, the product of the computer program may include packaging materials.

The above paragraphs use various levels of description. Obviously, the teachings herein can be implemented in many ways, and any specific structure or function disclosed in the examples is only a representative situation. According to the teaching of this article, any person familiar with the art should understand that each aspect disclosed in this article can be implemented independently or two or more aspects can be implemented in combination.

Although the disclosure has been disclosed above with the embodiment, it is not intended to limit the disclosure. Anyone who is familiar with this technology can make some changes and modifications without departing from the spirit and scope of the disclosure. Therefore, the protection scope of the invention The ones defined in the scope of the attached patent application shall prevail.

100, 200: set value automatic adjustment device 110, 210: first temporary storage circuit 120, 220: second temporary storage circuit 130, 230: control logic circuit 240: comparison circuit 300: central processing unit 400: peripheral device 410: second Three temporary storage circuit 420: fourth temporary storage circuit 430: second control logic circuit D _in : input value E _trigger : trigger event S510, S610~S660: steps

FIG. 1 is a block diagram showing an automatic setting value adjustment device 100 according to an embodiment of the present invention. FIG. 2 is a block diagram showing an automatic setting value adjustment device 200 according to an embodiment of the present invention. FIG. 3 is a schematic diagram showing adjusting a setting value of a peripheral device according to an embodiment of the present invention. FIG. 4 is a schematic diagram showing adjusting a setting value of a peripheral device according to another embodiment of the present invention. FIG. 5 is a flow chart of a method for automatically adjusting a setting value according to an embodiment of the present invention. FIG. 6 is a flow chart of a method for automatically adjusting setting values according to another embodiment of the present invention.

100: Set value automatic adjustment device

110: the first temporary storage circuit

120: the second temporary storage circuit

130: Control logic circuit

E _trigger : trigger event

Claims (10)

An automatic setting value adjustment device, comprising: a first temporary storage circuit, storing an increment value and a decrement value; A second temporary storage circuit, storing a first set value; A control logic circuit, coupled to the first temporary storage circuit and the second temporary storage circuit, and judging whether to adjust the first set value according to the increment value or the decrement value according to a trigger event; and A comparison circuit, coupled to the second temporary storage circuit and the control logic circuit, wherein the comparison circuit receives an input value, and compares whether the input value is greater than or equal to the first set value, so as to generate the trigger event to a central processor or a peripheral device. The set value automatic adjustment device according to claim 1, wherein the second temporary storage circuit further stores a second set value, wherein the first set value is an upper limit value, and the second set value is a lower limit value. The set value automatic adjustment device according to claim 2, wherein the comparison circuit compares whether the input value is greater than or equal to the upper limit value, and compares whether the input value is less than or equal to the lower limit value, so as to generate the trigger event. The set value automatic adjustment device according to claim 3, wherein when the input value is greater than or equal to the upper limit value, the control logic circuit adds the incremental value to the upper limit value and the lower limit value according to the trigger event, And update the above-mentioned upper limit and the above-mentioned lower limit stored in the above-mentioned second temporary storage circuit according to the adjusted above-mentioned upper limit and the above-mentioned lower limit; and when the above-mentioned input value is less than or equal to the above-mentioned lower limit, the above-mentioned The control logic circuit subtracts the above-mentioned decrement value from the above-mentioned upper limit value and the above-mentioned lower limit value according to the above-mentioned trigger event, and updates the above-mentioned upper limit and the above lower limit. The set value automatic adjustment device according to claim 3, wherein when the input value is greater than or equal to the upper limit value, or the input value is less than or equal to the lower limit value, the comparison circuit sends the trigger event to the central processing unit Or the above-mentioned peripheral device, wherein the above-mentioned central processing unit adjusts the setting value of the above-mentioned peripheral device according to the above-mentioned trigger event, or the above-mentioned peripheral device directly adjusts its setting value according to the above-mentioned trigger event. A set value automatic adjustment method is suitable for a set value automatic adjustment device, wherein the set value automatic adjustment device is used to receive an input value and send a trigger event to a central processing unit or a peripheral device, including: Using a comparator circuit of the set value automatic adjustment device to compare whether the above input value is greater than or equal to a first set value, so as to generate the above trigger event; and By means of a control logic circuit of the above-mentioned set value automatic adjustment device, according to the above-mentioned trigger event, it is judged whether to adjust the above-mentioned first set value according to an increment value or a decrement value, wherein the above-mentioned increment value and the above-mentioned decrement value are stored in the above-mentioned set value automatic A first temporary storage circuit of the adjustment device, and the first set value is stored in a second temporary storage circuit of the automatic adjustment device of the set value. The method for automatically adjusting a set value according to Claim 6, wherein the second temporary storage circuit further stores a second set value, wherein the first set value is an upper limit value, and the second set value is a lower limit value. For example, the setting value automatic adjustment method of claim item 7 further includes: By means of the comparison circuit, it is compared whether the input value is greater than or equal to the upper limit value, and whether the input value is less than or equal to the lower limit value, so as to generate the trigger event. For example, the setting value automatic adjustment method of claim item 8 further includes: When the above-mentioned input value is greater than or equal to the above-mentioned upper limit value, the above-mentioned upper limit value and the above-mentioned lower limit value are added to the above-mentioned incremental value by the above-mentioned control logic circuit according to the above-mentioned trigger event, and according to the adjusted above-mentioned upper limit value and the above-mentioned lower limit value, updating the above-mentioned upper limit value and the above-mentioned lower limit value stored in the above-mentioned second temporary storage circuit; and When the above-mentioned input value is less than or equal to the above-mentioned lower limit value, the above-mentioned upper limit value and the above-mentioned lower limit value are subtracted from the above-mentioned decrement value by the above-mentioned control logic circuit according to the above-mentioned trigger event, and according to the adjusted above-mentioned upper limit value and The above-mentioned lower limit value updates the above-mentioned upper limit value and the above-mentioned lower limit value stored in the above-mentioned second temporary storage circuit. For example, the setting value automatic adjustment method of claim item 8 further includes: When the above-mentioned input value is greater than or equal to the above-mentioned upper limit value, or when the above-mentioned input value is less than or equal to the above-mentioned lower limit value, the above-mentioned trigger event is transmitted to the above-mentioned central processing unit or the above-mentioned peripheral device through the above-mentioned comparison circuit, and the above-mentioned central processing unit according to The above-mentioned trigger event adjusts the setting value of the above-mentioned peripheral device, or the above-mentioned peripheral device directly adjusts its setting value according to the above-mentioned trigger event.

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