TWI463303B - Electronic apparatus and energy-saving method thereof - Google Patents

Description

Electronic device and energy saving method thereof

The disclosure relates to an electronic device and an energy saving method thereof.

With the advancement of technology, electronic devices have gradually become popular in everyday life. The general electronic device can set the energy-saving mode, and enter the sleep power-saving state after the user does not use for a period of time. However, the smoothness of use of electronic devices and power saving are contradictory. If the time to enter the energy-saving mode is shorter, the power saving benefit is higher, but the user is often interrupted during the use of the electronic device. On the contrary, the time to enter the energy-saving mode is long, and the power saving efficiency is poor. However, the use of electronic devices is less affected.

The disclosure relates to an electronic device and an energy saving method thereof.

According to the present disclosure, an energy saving method is proposed. The energy saving method includes: determining whether the wake-up signal is received within the first preset time after entering the energy-saving mode; when receiving the wake-up signal in the first preset time, increasing the number of possible dissatisfaction, and determining whether the number of possible dissatisfaction is greater than the first pre- Set the number of times; if the wake-up signal is not received within the first preset time, if the number of possible unsatisfactory times is greater than or equal to the second preset number of times, the number of possible unsatisfactory times is set to a third preset number; when possible When the number of satisfaction times is greater than the first preset number, the time of entering the energy saving mode is increased by the first variation amount; and when the wakeup signal is not received within the first preset time, and the number of times of dissatisfaction may be reached within the second preset time When the third preset number of times will enter the energy saving mode The second variation is subtracted, and the second preset time is greater than the first preset time.

According to the present disclosure, an electronic device is proposed. The electronic device includes a processor, a user interface, a memory, and a power management unit. The processor determines whether the wake-up signal is received within the first preset time after entering the energy-saving mode. When the first preset time is awakened, the processor increments the number of possible dissatisfaction and determines whether the number of possible dissatisfaction is greater than the first preset number of times. When the wake-up signal is not received within the first preset time, if the number of unsatisfactory times is greater than or equal to the second preset number, the processor may set the number of unsatisfactory times to the third preset number of times. When the number of possible dissatisfaction is greater than the first predetermined number of times, the processor increases the first variation by the time of entering the energy saving mode. When the wake-up signal is not received within the first preset time, and the number of unsatisfactory times is the third preset number of times after reaching the second preset time, the processor subtracts the second variation amount from the time of entering the power-saving mode. The second preset time is greater than the first preset time. The user interface is coupled to the processor and generates a wake-up signal. The memory system is coupled to the processor and stores the number of possible unsatisfactory times, the first preset number of times, the time to enter the energy saving mode, the first preset time, and the second preset time. The power management unit is coupled to the processor and performs power management according to the time when the energy saving mode is entered.

According to the present disclosure, an energy saving method is proposed. The energy saving method includes: determining whether the wake-up signal is received within the first preset time after entering the energy-saving mode; when receiving the wake-up signal in the first preset time, decreasing the number of possible dissatisfaction, and determining whether the number of possible dissatisfaction is less than the first pre- Set the number of times; if the wake-up signal is not received within the first preset time, if the number of unsatisfactory times is less than the second preset number, the number of possible unsatisfactory times is set to the third preset number; when the number of possible dissatisfaction is less than the first pre- When you set the number of times, you will enter energy saving The time of the mode increases the first variation amount; and when the wake-up signal is not received within the first preset time, and the number of possible unsatisfactory times is the third preset number of times after reaching the second preset time, the time of entering the energy-saving mode The second variation is subtracted, and the second preset time is greater than the first preset time.

According to the present disclosure, an electronic device is proposed. The electronic device includes a processor, a user interface, a memory, and a power management unit. The processor determines whether the wake-up signal is received within the first preset time after entering the energy-saving mode. When receiving the wake-up signal within the first preset time, the processor decrements the number of possible dissatisfaction and determines whether the number of possible dissatisfaction is less than the first preset number of times. When the wake-up signal is not received within the first preset time, if the number of unsatisfactory times is less than the second preset number, the processor may set the number of unsatisfactory times to the third preset number of times. When the number of possible dissatisfaction is less than the first predetermined number of times, the processor increases the first variation by the time when the energy saving mode is entered. When the wake-up signal is not received within the first preset time, and the number of unsatisfactory times is the third preset number of times after reaching the second preset time, the processor subtracts the second variation amount from the time of entering the power-saving mode. The second preset time is greater than the first preset time. The user interface is coupled to the processor and generates a wake-up signal. The memory system is coupled to the processor and stores the number of possible unsatisfactory times, the first preset number of times, the time to enter the energy saving mode, the first preset time, and the second preset time. The power management unit is coupled to the processor and performs power management according to the time when the energy saving mode is entered.

In order to better understand the above and other aspects of the present disclosure, the following specific embodiments, together with the accompanying drawings, are described in detail below:

Please refer to FIG. 1 , which is a block diagram of an electronic device according to an embodiment. The electronic device 1 includes a processor 11 , a user interface 12 , a memory 13 , and a power management unit 14 . The processor 11 is coupled to the user interface 12 , the memory 13 , and the power management unit 14 . The user interface 12 is, for example, a mouse, a keyboard or a touch screen. The user interface 12 is used to generate the wake-up signal S _w to wake up the electronic device 1 from the power-saving mode. The memory 13 is configured to store the number of possible dissatisfactions k, the first preset number n, the time to enter the energy saving mode T _now (i), the time T _i preset to enter the energy saving mode, the first preset time T _S , the second The preset time T _L and the third preset time T _min . The power management unit 14 performs power management according to the time T _now (i) entering the power saving mode.

The aforementioned power saving mode is, for example, a sleep mode or a sleep mode, and the time T _i entering the power saving mode is, for example, a sleep time or a sleep time. Sleep mode is a power saving state. The electronic device is, for example, a mobile phone or a computer. When the computer receives the wake-up signal in the sleep mode, the computer will quickly operate at full power in a few seconds. Putting the computer into sleep mode is like stopping the disc player, and the computer immediately stops the work being performed.

The sleep mode is, for example, a power saving state designed for a laptop. The aforementioned sleep mode stores the work and settings in the memory and uses a small amount of power, while the sleep mode stores the opened files and programs to the hard disk and then turns off the computer. In all power saving states, sleep mode consumes the least amount of power. If you don't use your laptop for a long time and you can't charge the battery during this time, you can put your laptop into hibernation mode.

First embodiment

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 at the same time. FIG. 2 is a flow chart showing an energy-saving method according to the first embodiment, and FIG. 3 is a satisfactory state and possible The state diagram of the dissatisfied state and the dissatisfied state, and the fourth diagram shows a timing diagram for adjusting the time to enter the energy saving mode. The energy saving method includes the following steps: as shown in step S1, the processor 11 initializes the time T _now (i) entering the energy saving mode, the first variation T _a (i), the second variation T _m (i), and may be dissatisfied The number of times k, and the number of possible dissatisfactions k is set to a third preset number of times. In the first embodiment, the third preset number is illustrated by taking 0 as an example. For example, the processor 11 initializes the time T _now (i) entering the energy saving mode to the time T _i preset to enter the energy saving mode, and the first variation amount T _a (i) is, for example, initialized to 1, and the second variation T _m (i) For example, the initialization is set to 5. As shown in step S2, the processor 11 determines whether the electronic device 1 enters the energy saving mode is within a first predetermined time T _s receiving a wake-up signal is awakened. The first preset time T _s is a short time, such as a few minutes. After the electronic device 1 enters the power-saving mode, the wake-up signal S _w is received during the first preset time T _s and is woken up, and the processor 11 evaluates that the user is in a state of possible dissatisfaction with the time T _now (i) entering the power-saving mode. . Under the possible dissatisfaction state 32, as shown in step S3, the processor 11 increments the number of possible dissatisfaction k.

As shown in step S4, the processor 11 determines whether the number of possible dissatisfactions k is greater than the first predetermined number of times n. In the first embodiment, the preset value of the first preset number n is illustrated by taking 3 as an example. When the number of possible dissatisfaction k is not greater than the first predetermined number of times n, the processor 11 re-executes step S2. Conversely, when the number of possible dissatisfactions k is greater than the first predetermined number of times n, indicating that the number of possible dissatisfaction states 32 consecutively occurs is greater than the first predetermined number of times n, the processor 11 evaluates the time T _now (the time the user enters the energy saving mode) i) is in an unsatisfactory state 33. When the number of possible dissatisfaction k is greater than the first predetermined number of times n, the processor 11 will perform step S5. As shown in step S5, when the possible dissatisfaction number k is greater than the first preset number n, the processor 11 increases the first variation amount T _a (i) by entering the energy saving mode time T _now (i), and may not The number of satisfactions is set to the third preset number of times. Subsequently, when the processor 11 again evaluates that the user is in the dissatisfied state 33 for the time _Tnow entering the power saving mode, the first variation amount T _a (i) is again increased.

For example, after entering the energy saving mode of the first adjustment time T _now (i) to enter a power saving mode of time T _now (1), and the time after entering the power saving mode of the second adjustment T _now (i) is Time to enter energy saving mode T _now (2). The time to enter the energy saving mode after the first adjustment T _now (1) = the time to enter the energy saving mode T _i + the first variation amount T _a , and the time after the second adjustment into the energy saving mode T _now (2) ) = the first adjustment of power saving mode entry time of T _now (1) + first variance T _a.

When the electronic device 1 is not awake after receiving the wake-up signal S _w within the first preset time T _s , the processor 11 evaluates that the user is in the satisfactory state 31 for the time T _now (i) entering the power-saving mode. In the satisfaction state 31, as shown in step S10, when the wake-up signal S _w is not received within the first preset time T _s , if the number of possible unsatisfactory k is greater than or equal to the second preset number, the processor 11 may The number of dissatisfaction k is set to the third preset number of times. In the first embodiment, the second preset number is illustrated by taking 1 as an example. As a result, as long as the satisfaction state 31 is entered, the number of times of dissatisfaction k may not be continuously incremented. Then, as shown in step S6, the processor 11 determines whether the possible dissatisfaction number k is within a second preset time T _L for a third preset number of times. The second preset time T _L is a long time with respect to the first preset time T _S , and the second preset time T _{L is} greater than the first preset time T _S . When the number k may not be happy to reach the second predetermined time T _L for the third predetermined number, it indicates that the user satisfaction with a long time now the saving mode of T _now (i), the processor 11 executes step S7 .

As shown in step S7 the processor 11 will enter the power saving mode time T _now (i) subtracting the second variance T _m. For example, the third time after entering the power saving mode adjustment of T _now (3) the time to enter power saving mode of T _now (3), after entering the third power saving mode to adjust the time of T _now (3) = section after adjusting the time to enter power saving mode of the secondary T _now (2) - second variance T _m. As shown in step S8, the processor 11 determines whether the time T _now (i) entering the power saving mode is less than the third preset time _Tmin . When the time T _now (i) entering the power saving mode is less than the third preset time _Tmin , the processor 11 sets the preset time T _now (i) equal to the third preset time _Tmin as shown in step S9.

The processor 11 continuously dynamically adjusts the time T _now (i) entering the energy saving mode according to the first variation amount T _a (i) and the second variation amount T _m (i), and finally enters the energy saving mode time T _now (i) It tends to be a certain value as the user gets used to it. In addition, in other embodiments, the processor 11 can also determine whether the change in the time T _now (i) entering the power saving mode conforms to a convergence rule. When the change of T _now (i) at the time of entering the power saving mode conforms to the convergence rule, the processor 11 does not perform adjustment to reduce the amount of calculation of the processor 11. The first variation amount T _a (i), the second variation amount T _m (i) or the first preset number n is not limited to a fixed value. In other embodiments, the processor 11 can also enter the energy saving mode. The time T _now (i) elastically adjusts the first variation T _a (i), the second variation T _m (i), the time T _now (i) entering the power saving mode, or the first preset number n.

The first variation T _a (i) and the second variation T _m (i) may change with the time T _now (i) entering the energy saving mode. The relationship between the first variation T _a (i) and the time T _now (i) entering the energy saving mode is expressed, for example, by Equation 1, and the second variation T _m (i) and the time T _now (i) entering the energy saving mode The relationship is expressed, for example, by the formula 2. The x in Formula 1 and Formula 2 is represented, for example, by Formula 3.

The first variation Ta(i)=Ta(0)+(Ta,max-Ta(0))×(1-e ^-x ) (Equation 1)

The second variation Tm(i)=Tm(0)+(Tm(0)-Tm,min)×e ^-x (Equation 2)

Wherein the first variation maximum value T _a,max is the maximum value of the first variation T _a (i), and the second variation minimum T _m,min is the minimum of the second variation T _m (i) . The minimum time T _min to enter the energy saving mode is the minimum value of the time T _now (i) entering the energy saving mode, and a is a coefficient. In an embodiment, a is, for example, 5.

For example, the first variation T _a (0) is 1, and the second variation T _m (0) is 5. The first variation amount maximum value T _a,max is 5, and the second variation amount minimum value T _m,min is 1. The time T _now (0) is 30 when entering the energy saving mode, and T _now (i) is 25 when entering the energy saving mode. The third preset time _Tmin is 10. Power . The first variation Ta(i)=1+(5-1)×(1-e ^-1.25 )=3.85, and the second variation Tm(i)=5+(5-1)×e ^-1.25 =6.14 .

When the energy saving mode is entered, T _now (i) is reduced from 30 to 20. Power . The first variation Ta(i)=1+(5-1)×(1-e ^-2.5 )=4.67, and the second variation Tm(i)=5+(5-1)×e ^-2.5 =5.328 . When the energy saving mode is entered, T _now (i) is increased from 20 to 25. Power . The first variation Ta(i) = 1 + (5-1) × (1-e - ^0.25 ) = 1.88, and the second variation Tm(i) = 5 + (5-1) × e - ^0.25 = 8.12 . It can be seen that the first variation T _a (i) decreases as the time T _now (i) enters the power saving mode increases, and increases as the time T _now (i) enters the power saving mode decreases. The second variation T _m (i) increases as the time T _now (i) enters the power saving mode increases, and decreases as the time T _now (i) enters the power saving mode decreases.

In addition, the processor 11 can further adjust the first preset number n by the time T _now (i) entering the power saving mode. The first preset number n is, for example, proportional to the time T _now (i) entering the power saving mode. For example, when the time T _now (i) enters the power saving mode is 20, the processor 11 adjusts the first preset number n to 20. Subsequently, when the time T _now (i) of entering the power saving mode is adjusted to 15, the processor 11 correspondingly adjusts the first preset number n to 15.

Please refer to FIG. 5, which is a comparison test chart of screen dormancy performance. Taking 22 computer screens as an example, the average daily power consumption is 5.17 degrees (kWH) when the above energy saving method is not applied. Conversely, when the above energy saving method is applied, the average daily power consumption drops to 4.25 degrees (kWH). In other words, when the above energy saving method is applied, about 18% of the power consumption is saved.

Please refer to FIG. 6 , which shows a comparison test chart of host sleep performance. Taking 18 computer hosts as an example, the average daily power consumption is 15.8 degrees (kWH) when the above energy saving method is not applied. Conversely, when the above-described energy saving method is applied, the average daily power consumption drops to 12.6 degrees (kWH). In other words, when the above energy saving method is applied, about 20.25% of the power consumption is saved.

Second embodiment

Please refer to FIG. 1 , FIG. 2 , FIG. 3 , and FIG. 7 simultaneously. FIG. 7 is a flow chart showing an energy saving method according to the second embodiment. The second embodiment is mainly different from the first embodiment in that the second embodiment replaces step S3, step S4 and step 10 of the first embodiment with steps S11 to S13, respectively. In the second embodiment, after the execution of step S2 is completed, step S11 is next performed. As shown in step S11, the processor 11 decrements the number of possible dissatisfactions k. Next, as shown in step S12, the processor 11 determines whether the number of possible dissatisfactions k is less than the first predetermined number of times n.

When the number of possible dissatisfaction k is not less than the first preset number n, the processor 11 performs step S2 again. Conversely, when the number of possible dissatisfaction k is less than the first predetermined number of times n, the processor 11 will perform step S5. As shown in step S5, when the possible dissatisfaction number k is less than the first preset number n, the processor 11 increases the first variation amount T _a (i) by entering the energy saving mode time T _now (i), and may not The number of satisfactions is set to the third preset number of times.

When the electronic device 1 is not woken up by receiving the wake-up signal S _w within the first preset time T _s , step S13 will be performed. If the wake-up signal S _w is not received within the first preset time T _s in step S13, if the number of possible dissatisfaction k is less than the second preset number, the processor 11 sets the possible dissatisfaction number k to the third preset number of times. . In the second embodiment, the preset value of the first preset number n is determined by -3, the second preset number is -1, and the third preset number is 0.

The electronic device and the energy-saving method thereof described in the above embodiments dynamically adjust the time of entering the energy-saving mode according to user habits, and can not only save energy. The conflict with the operation discomfort is minimized, and the maximum energy saving effect can be further achieved in accordance with the user's habit.

In summary, although the disclosure has been disclosed in the above embodiments, it is not intended to limit the disclosure. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure. Therefore, the scope of protection of this disclosure is subject to the definition of the scope of the appended claims.

1‧‧‧Electronic device

11‧‧‧ Processor

12‧‧‧User interface

13‧‧‧ memory

14‧‧‧Power Management Unit

31‧‧‧ Satisfaction

32‧‧‧ may be dissatisfied

33‧‧‧Unsatisfactory state

S1~S13‧‧‧Steps

S _w ‧‧‧ wake up signal

T _i ‧‧‧Preset time to enter energy saving mode

T _now (i) ‧‧‧Time to enter energy saving mode

T _min ‧‧‧ third preset time

T _a ‧‧‧first variation

T _n ‧‧‧Second variation

1 is a block diagram of an electronic device in accordance with an embodiment.

FIG. 2 is a flow chart showing an energy saving method according to the first embodiment.

Figure 3 depicts a state diagram of a satisfactory state, a dissatisfied state, and an unsatisfactory state.

Figure 4 depicts a timing diagram for adjusting the time to enter the power save mode.

Figure 5 is a comparison test chart showing the performance of the screen dormancy.

Figure 6 is a comparison test diagram of a host sleep performance.

Figure 7 is a flow chart showing an energy saving method in accordance with the second embodiment.

S1~S10‧‧‧Steps

Claims (52)

An energy-saving method includes: determining whether a wake-up signal is received within a first preset time after entering a power-saving mode; and receiving a wake-up signal during the first preset time, incrementing a possible number of unsatisfactory times, and determining the Whether the number of unsatisfactory times is greater than a first preset number of times; if the wake-up signal is not received within the first preset time, if the number of possible unsatisfactory times is greater than or equal to a second preset number of times, the number of possible dissatisfaction times may be Set to a third preset number of times; when the number of possible unsatisfactory times is greater than the first preset number of times, increase a time of entering the energy saving mode by a first variation amount; and when not receiving the first preset time The wake-up signal, and the number of possible unsatisfactory times is a third preset amount when the second preset time is reached, and the time of entering the energy-saving mode is subtracted by a second variation time, where the second preset time is greater than The first preset time. The energy saving method of claim 1, further comprising: determining whether the time of entering the energy saving mode is less than a third preset time; and setting the time when the time of entering the energy saving mode is less than the third preset time The preset time is equal to the third preset time. The energy saving method of claim 1, further comprising: adjusting the first variation according to the time of entering the energy saving mode. The energy saving method according to claim 3, wherein the first variation amount decreases as the time of entering the energy saving mode increases, and The time to enter the energy saving mode is reduced and increased. For example, in the energy saving method described in claim 4, the first variation amount has an exponential relationship with the time of entering the energy saving mode. The energy saving method of claim 1, further comprising: adjusting the second variation according to the time of entering the energy saving mode. The energy saving method of claim 6, wherein the second variation increases as the time to enter the energy saving mode increases, and decreases as the time to enter the energy saving mode decreases. For example, in the energy saving method described in claim 7, wherein the second variation amount has an exponential relationship with the time of entering the energy saving mode. The energy saving method of claim 1, further comprising: adjusting the first preset number according to the time of entering the energy saving mode. The energy saving method of claim 9, wherein the first preset number of times is proportional to the time of entering the energy saving mode. For example, the energy saving method described in claim 1 further includes: determining whether the change of the time of entering the energy saving mode conforms to a convergence rule; wherein, when the time of entering the energy saving mode changes according to the convergence rule, stopping the adjustment Time to enter energy saving mode. The energy saving method of claim 1, wherein the second preset number is equal to one. The energy saving method of claim 1, wherein the third preset number is equal to zero. An electronic device comprising: a processor determines whether a wake-up signal is received within a first preset time after entering a power-saving mode, and when the wake-up signal is received within the first preset time, the processor increments a possible number of unsatisfactory times, and Determining whether the number of possible dissatisfaction times is greater than a first preset number of times, and if the wake-up signal is not received within the first preset time, if the number of possible unsatisfactory times is greater than or equal to a second preset number of times, the processor The number of possible dissatisfaction is set to a third preset number. When the number of possible unsatisfactory times is greater than the first preset number of times, the processor increases a time of entering the energy saving mode by a first variation amount, when not the first Receiving the wake-up signal within a preset time, and when the number of possible unsatisfactory times reaches the third preset time for the second preset time, the processor subtracts the time of entering the energy-saving mode by a second variation The second preset time is greater than the first preset time; a user interface is coupled to the processor and generates the wake-up signal; a memory coupled to the processor and storing the possible dissatisfaction The number of times, the first preset number of times, the time of entering the power saving mode, the first preset time and the second preset time; and a power management unit coupled to the processor and according to the entering energy saving mode Time for power management. The electronic device of claim 14, wherein the processor further determines whether the time for entering the energy saving mode is less than a third preset time, and the time for entering the energy saving mode is less than the third preset time, setting The preset time is equal to the third preset time. The electronic device of claim 14, wherein the processor adjusts the first variation amount according to the time when the energy saving mode is entered. An electronic device as claimed in claim 16, wherein The first amount of variation decreases as the time to enter the power save mode increases, and increases as the time to enter the power save mode decreases. The electronic device of claim 17, wherein the first variation amount is in an exponential relationship with the time of entering the energy saving mode. The electronic device of claim 14, wherein the processor adjusts the second variation according to the time of entering the energy saving mode. The electronic device of claim 19, wherein the second variation increases as the time to enter the power save mode increases, and decreases as the time to enter the power save mode decreases. The electronic device of claim 20, wherein the second variation amount is in an exponential relationship with the time of entering the energy saving mode. The electronic device of claim 14, wherein the processor adjusts the first preset number of times according to the time when the energy saving mode is entered. The electronic device of claim 22, wherein the first preset number of times is proportional to the time of entering the energy saving mode. The electronic device of claim 14, wherein the processor determines whether the change in the time of entering the energy saving mode conforms to a convergence rule, and the change in the time of entering the energy saving mode conforms to the convergence rule, and stops adjusting the entry. The time of the energy saving mode. The electronic device of claim 14, wherein the second predetermined number of times is equal to one. The electronic device of claim 14, wherein the third predetermined number of times is equal to zero. An energy saving method comprising: Determining whether a wake-up signal is received within a first preset time after entering a power-saving mode; when receiving the wake-up signal in the first preset time, decrementing a possible number of dissatisfaction and determining whether the number of possible dissatisfaction is less than a first preset number of times; if the wake-up signal is not received within the first preset time, if the number of possible unsatisfactory times is less than a second preset number of times, setting the number of possible unsatisfactory times to a third preset number of times When the number of possible dissatisfaction times is less than the first preset number of times, increasing a time of entering the energy saving mode by a first variation amount; and receiving the wakeup signal when the first preset time is not received, and the possibility is not When the number of satisfaction times is the third preset time, the time of entering the energy saving mode is subtracted by a second variation amount, and the second preset time is greater than the first preset time. The energy saving method of claim 27, further comprising: determining whether the time for entering the energy saving mode is less than a third preset time; and setting the time when the time for entering the energy saving mode is less than the third preset time The preset time is equal to the third preset time. The energy saving method according to claim 27, further comprising: adjusting the first variation according to the time of entering the energy saving mode. The energy saving method according to claim 29, wherein the first variation amount decreases as the time of entering the energy saving mode increases, and The time to enter the energy saving mode is reduced and increased. For example, in the energy saving method described in claim 30, the first variation amount has an exponential relationship with the time of entering the energy saving mode. The energy saving method according to claim 27, further comprising: adjusting the second variation according to the time of entering the energy saving mode. The energy saving method according to claim 32, wherein the second variation increases as the time to enter the energy saving mode increases, and decreases as the time to enter the energy saving mode decreases. For example, in the energy saving method described in claim 33, the second variation amount has an exponential relationship with the time of entering the energy saving mode. The energy saving method described in claim 27, further comprising: adjusting the preset number according to the time of entering the energy saving mode. The energy saving method according to claim 35, wherein the first preset number is proportional to the time of entering the energy saving mode. The energy saving method as described in claim 27, further comprising: determining whether the change in the time of entering the energy saving mode conforms to a convergence rule; wherein, when the time of entering the energy saving mode changes according to the convergence rule, stopping adjusting Time to enter energy saving mode. The energy saving method of claim 27, wherein the second preset number is equal to -1. For example, the energy saving method described in claim 27, wherein The third preset number of times is equal to zero. An electronic device includes: a processor that determines whether a wake-up signal is received within a first preset time after entering a power-saving mode, and when the wake-up signal is received within the first preset time, the processor is decremented by one If the number of possible dissatisfaction times is less than a second preset number of times, if the number of possible dissatisfaction times is less than a first preset number of times, if the number of possible dissatisfaction times is less than a second preset number of times, The processor sets the number of possible dissatisfaction times to a third preset number. When the number of possible unsatisfactory times is less than the first preset number of times, the processor increases a time of entering the energy saving mode by a first variation amount. Receiving the wake-up signal in the first preset time, and the number of possible unsatisfactory times is less than one time when the processor enters the energy-saving mode when the second preset time is reached for the third preset time a second variation, the second preset time being greater than the first preset time; a user interface coupled to the processor and generating the wake-up signal; a memory coupled to the processor, and And storing the number of possible dissatisfaction, the first preset number of times, the time of entering the energy saving mode, the first preset time, and the second preset time; and a power management unit coupled to the processor and according to The power management is performed at the time when the energy saving mode is entered. The electronic device of claim 40, wherein the processor further determines whether the time for entering the energy saving mode is less than a third preset time, and the time for entering the energy saving mode is less than the third preset time, setting The preset time is equal to the third preset time. An electronic device as claimed in claim 40, wherein The processor adjusts the first variation amount according to the time when the energy saving mode is entered. The electronic device of claim 42, wherein the first variation amount decreases as the time of entering the energy saving mode increases, and increases as the time to enter the energy saving mode decreases. The electronic device of claim 43, wherein the first variation amount is in an exponential relationship with the time of entering the energy saving mode. The electronic device of claim 40, wherein the processor adjusts the second variation according to the time of entering the energy saving mode. The electronic device of claim 45, wherein the second variation increases as the time to enter the power save mode increases, and decreases as the time to enter the power save mode decreases. The electronic device of claim 46, wherein the second variation amount is in an exponential relationship with the time of entering the energy saving mode. The electronic device of claim 40, wherein the processor adjusts the preset number of times according to the time when the energy saving mode is entered. The electronic device of claim 48, wherein the first predetermined number of times is proportional to the time of entering the energy saving mode. The electronic device of claim 40, wherein the processor determines whether the change in the time of entering the energy saving mode conforms to a convergence rule, and the change in the time of entering the energy saving mode conforms to the convergence rule, and stops adjusting the entry. The time of the energy saving mode. The electronic device of claim 40, wherein the second predetermined number of times is equal to -1. The electronic device of claim 40, wherein the third predetermined number of times is equal to zero.