TWI411284B - Portable device with event notification function and event notification method - Google Patents

Abstract

A portable device with event notification function and an event notification method are provided. The portable device detects the state of the environment around itself, wherein a number of different environmental states can be associated with motion states of a user of the portable device. When the portable device detects an event of which the user should be informed, a notification signal, after a change of the user's motion state, is generated to notify the user of the event. As the change of motion state occurs, it is regarded that the user has already finished doing one thing and that the user has just begun to do another thing. Thus, it is better for the user to be notified at this time, and the notice of the event will not be neglected by the user. The portable device provides better human-friendly notification function and better human-machine interaction, thus leading to better user experlences.

Description

Portable device with event reminding function and event reminding method

The present invention relates to an event reminding method and an electronic device, and more particularly to a portable device capable of estimating an action state and a method for alerting the same.

Portable devices such as mobile phones, multimedia players, personal digital assistants, and digital cameras have long been an item that users often carry with them because of their ease of use. Most portable devices provide reminders, such as programs for time management, providing reminders for calendars, to-do events, anniversaries, or other different events, and for example, devices need to interact with users or inform devices. A warning signal will also be generated when the situation occurs.

The traditional reminder function is displayed on the screen immediately when the portable device sends a reminder. For example, in the above-mentioned time management program, the metropolitan area requires the user to input a predetermined reminder time, for example, setting a trip at 10:00 am and issuing a reminder signal 10 minutes before the trip occurs. In addition, portable devices often remind users of certain events in a stereotypical manner. For example, one event is the birthday of someone on January 4, and the portable device is issued at 12:00 on January 4th. remind.

For urgent events, users certainly want to be reminded on time. However, for non-emergency general events, because the user may be busy doing other things, the portable device suddenly reminds, which is easy to cause distraction to the user. What is going on right now. In addition, the user may be in an environment where the reminder cannot be received or the action state, and the immediate reminder has no way for the user to accept, or the user may ignore the reminder. As mentioned in the previous birthday reminder, the user may already be asleep; or an instant reminder of a missed call, a text message or an email reminder, the user may be in a walking or driving state without notice.

It can be seen that the traditional reminder function still has many shortcomings and fails to meet the needs of users. Therefore, how to notify the user of the reminder event at an appropriate time is an important issue.

The invention relates to a portable device with an event reminding function and an event reminding method. The portable device has a function of sensing the current environmental state of the portable device, and different environmental states can correspond to the action state of the user. When the portable device detects an event that needs to notify the user, the portable device can send a signal to remind the event after changing from an environmental state to another environmental state. Among them, the change of the environmental state is regarded as the end of the user's previous work and is ready to do the next thing or the beginning of the current event, so the timing of the reminder should be appropriate. Therefore, the portable device provides a more user-friendly reminder function, further promoting the interaction between the human and the machine, and allowing the user to obtain good use experience.

According to a first aspect of the present invention, a portable device with an event reminding function is provided, comprising: an environmental state sensing unit and a control unit. The environmental state sensing unit is configured to sense an environmental state of the portable device, Get a sensory signal. After the control unit detects an event to remind the user, the control unit determines that the portable device is in one of a plurality of environmental states according to the sensing signal. When the control unit determines that the portable device changes from one of the environmental states to another environmental state according to the change of the sensing signal, the control unit sends a reminder signal to remind the user of the event.

According to a second aspect of the present invention, an event reminding method is provided. The method includes: after detecting an event to alert a user, reading a sensing signal, wherein the sensing signal indicates an environmental state in which the electronic device is located According to the sensing signal, determining that the electronic device is in one of a plurality of environmental states; and determining, according to the change of the sensing signal, that the electronic device changes from one of the environmental states to the other of the environmental states The environmental status sends a reminder signal to remind the user of this event.

According to a third aspect of the present invention, a computer program product is provided. When an electronic device is loaded into the computer program product, the electronic device executes a plurality of program instructions, and the program instructions are used to execute an event reminding method. The method includes the following steps: after detecting an event to remind the user, reading a sensing signal, wherein the sensing signal indicates a change in an environmental state of the electronic device; determining, according to the sensing signal, that the electronic device is in One of a plurality of environmental states; and when it is determined that the electronic device changes from one of the environmental states to another environmental state according to the change of the sensing signal, a reminder signal is sent to remind the user event.

According to a fourth aspect of the present invention, a computer readable information is provided a storage medium on which a plurality of program instructions are stored. When a program is loaded by the buffer memory-electronic device, the electronic device executes the program instructions, and the program instructions are used to execute the event reminding method described above.

In order to make the above-mentioned contents of the present invention more comprehensible, the following specific embodiments, together with the drawings, are described in detail below:

Please refer to FIG. 1 , which is a block diagram of a portable device according to an embodiment of the present invention. The portable device 100 has an event reminding function, and can send a notification signal at a suitable time to remind the user. The portable device 100 includes an environmental state sensing unit 110 and a control unit 120. The environment state sensing unit 110 is configured to sense the environment state of the portable device 100 to obtain a sensing signal. After the control unit 120 detects an event to remind the user, the control unit 120 performs sensing according to the sensing. The signal determines that the portable device is in one of a plurality of environmental states. When the control unit 120 determines that the portable device 100 changes from one of the environmental states to another environmental state according to the change of the sensing signal, the control unit 120 sends a reminder signal to remind the user to use the alarm signal. This event.

For the user, the timing at which the portable device 100 sends a reminder signal should be appropriate. The environmental state of the portable device often changes with the user's actions. For example, the portable device may change other changes, such as acceleration or angular velocity, as the user walks from rest or drives to another location. . Another example is a portable device that moves from indoors to outdoors or from the user. The pocket is taken out by the user and has a change in ambient temperature, light or darkness. Therefore, the environmental state can be regarded as the action state of the user, and it is assumed here that when the user makes a change in the action state, for example, the current work has come to an end and is ready for the next thing. Therefore, at the beginning of a thing, the reminder is passed to the user, and the user feels better than being disturbed during the work. From another point of view, the user's action state of the portable device is the continuous action state of the user of the portable device, which is determined by the user's continuous action over a period of time.

In addition, in some examples, events that need to be reminded can also be classified as immediacy or non-immediate, including, for example, to-do event reminders, anniversary reminders, birthday reminders, missed call reminders, short message reminders, or email reminders. That is, whether the event is urgent for the system or user of the device, and therefore it is necessary to inform the user immediately, for example, an event in which the power is insufficient to be instantaneous, and the event or event can be classified according to the system or user's needs of the device. By definition, the control unit 120 can determine the classification of the event and decide whether to issue a corresponding alert signal after the environmental state changes. In addition, after the instant reminder, the corresponding reminder signal is sent again according to the change of the environmental state.

In addition, in the portable device 100, the environmental state sensing unit 110 includes, for example, an acceleration sensor or a gravity sensor (G-senor) for sensing a change in acceleration, thereby knowing that The change in the position of the portable device. Moreover, in another example, the environmental state sensing unit 110 includes an angular velocity sensor or a gyro-sensor to sense a change in angular velocity, thereby Know the change in the location of the portable device. In addition, a global positioning system sensor (GPS) sensor or other positioning system sensor can also be an example. Therefore, the sensing signal includes at least one position signal to represent a change in position, and the position signal can be a one-dimensional, two-dimensional or three-dimensional signal representing a position or motion-related physical quantity of each axis in a seat axis system, for example It is the acceleration, angular velocity or displacement on the X, Y, and Z axes in a planar or solid coordinate system.

In another example, other environmental sensors, such as a light sensor or an image sensor, may be further combined to further sense the change of the environment, so that the control The unit can estimate various action states of the user according to the change of the position and the change of the light or image of the environment, wherein the sensing signal further includes an optical signal or an image signal. Similarly, in other examples, different environmental sensors, such as light, temperature sensors, or pressure sensors, can be used in a single mode or as long as they can help estimate the different states of motion of the user. Different combinations or even combinations of positional change sensors are included in the environmental state sensing unit 110 to generate sensing signals.

The control unit 120 controls the environmental state sensing unit 110 to read the sensing signal, and the control unit 120 can be a volume circuit such as a micro control unit, a microprocessor, a digital signal processor, and a special It is implemented using an application specific integrated circuit (ASIC) or a logic circuit. In different implementations of the control unit 120, the memory 130 may be additionally added to assist the recording control unit 120. The data of the processed sensing signal or the status of the previous action. Of course, the memory can also be designed to be built into the control unit 120.

The block diagram shown in FIG. 1 is a basic architecture of the portable device 10. Based on the architecture, the portable device 100 can be implemented as a portable device for a mobile phone, a multimedia player, a personal digital assistant, a digital camera, or even Other embedded systems such as GPS devices, on-board computers, watches, and running meters. In addition, in different implementations of the portable device 100, other components may be included to remind the user, for example, in the case of a mobile phone or a multimedia player, the alarm signal sent by the control unit 120 after the action state is changed may be Respond to this event by means of the display, sound generator, keyboard backlight or vibrator function of the mobile phone, or a combination thereof, to generate music, voice, sound, flash, image or vibration, etc. that the user can feel. Physical signal. As such, in other examples, the general knowledge person can generate a physical signal according to the implementation mode of the portable device 100 according to the alarm signal sent by the control unit 120 after the action state is changed.

Next, please refer to FIG. 2, which is a flow chart of a method for alerting an event according to an embodiment of the invention. As shown in step S210, it is detected that one of the events is to be reminded to the user. After that, in step S220, the environment state of the portable device is sensed to obtain a sensing signal.

Step S230, determining that the portable device is in one of a plurality of environmental states according to the change of the sensing signal. In general, the portable device 100 is carried by the user. Therefore, we can define a plurality of environmental states to correspond to the user's action state, such as stationary, walking, and on-board behavior.

Step S240: Determine, according to the change of the sensing signal, whether the portable device has a change in an environmental state. If there is no change in the environmental state, the execution of the steps including steps S220 to S240 is continued until there is an environmental state change. If it is determined in step S240 that there is an environmental state change, that is, one of the environmental states changes to another environmental state of the environmental states, step S250 is performed to issue a reminder signal to remind the user of the event. For example, the plurality of squares shown in FIG. 4 represent the environmental state of the portable device determined at a certain time interval on the time axis, and are regarded as the action state of the user of the portable device, and the indication 404 represents the At the time, the action state changes from the car to the standstill. Since the action state changes, it may mean that the user stops or prepares to get off the car from the state of the driving state. At this time, the user is more likely to notice the reminder signal, so the user can be at 404. A reminder signal is sent after the time or time.

In the above embodiment, the definition of the environmental state of the portable device corresponds to a change mode of the sensing signal, such as the static state of the user, the walking, and the action state on the vehicle, and the corresponding sensing signal has a corresponding The waveform change law exists. Different action states can be defined by finding out the variation of the sensing signals generated by the user when performing different actions.

The waveform of the position signal in the sensing signal is observed below, and the action states of the plurality of users are defined accordingly. For example, FIG. 5 shows a waveform of a position signal including a representative acceleration included in the sensing signal when the user is substantially stationary. As can be seen from the figure, the waveform tends to be stable. As shown in Figures 6A, 6B and 6C, respectively, when the user walks, the sensing signal includes The waveform representing the three position signals of the acceleration on the X, Y, and Z axes. It can be seen from the figure that the waveform has a waveform that continuously changes up and down continuously, which corresponds to the frequency of the pace when the person walks, and the acceleration will fall within a certain interval, which also corresponds to the human walking ability and general habits. . Then, as shown in Figures 7A, 7B and 7C, respectively, when the user is on the vehicle (or driving or sitting on the traffic shackle), the sensing signal includes three representative accelerations on the X, Y, and Z axes. The waveform of the position signal. It can be seen from the figure that the waveform has a large acceleration for a period of time from the start of the car to the acceleration, and then there is acceleration when the car is decelerated, so there are irregular waveforms of up and down changes, but for a long time, the variance It tends to be stable. This kind of change characteristic corresponds to the driving mode of the car, and the amplitude and amplitude of the waveform will fall within a certain interval, which also corresponds to the driving ability of the car and the speed limit of the general road.

According to the above observations, a plurality of action states are defined. Therefore, an example of performing the step S220 is: detecting a change or a pattern of a waveform of the sensing signal, and determining whether the waveform change or the type conforms to the waveform change corresponding to one of the defined action states. Or type, thereby determining that the user of the portable device is in one of these states of action.

In addition, in another example, analyzing at least one of the characteristic parameters in the change mode of the sensing signal corresponding to the different action states may also define the action state of the user. For example, the sensing signal includes a first position signal, and the first position signal changes according to a change in the position of the portable device, such as an acceleration, an angular velocity, and a displacement. Variance, variance, mean, zero-crossing point, amplitude, and time interval of the first position signal Changes or other parameters that are useful in probability or statistical or signal processing can be used as feature parameters to describe the changing characteristics of the sensing signals corresponding to the user's action state. For example, in the above static state, if the number of variations of the position signal in a time interval approaches zero, the currently obtained sensing signal can be analyzed, and the number of variations can be determined, and accordingly, whether the above conditions are met, that is, Whether the number of variations is substantially zero, from which to estimate whether the current user is in an action state corresponding to stationary. Similarly, the implementation of step S220 is another example: detecting a change of the sensing signal to generate at least one feature parameter, and determining, according to at least the feature parameter, that the user of the portable device is in the action state. One.

In the following, taking the above-mentioned user's static, walking, and on-board behavior states as an example, defining characteristic parameters of the sensing signals corresponding to the three action states, and setting which conditions the characteristic parameters should satisfy, can be based on The currently obtained sensing signal is used to estimate the action state of the user of the portable device to illustrate another example of implementing step S220. In the following examples, the sensing signal includes a plurality of position signals corresponding to different directions, and the position signals are changed as the position of the portable device changes. These position signals are two-dimensional acceleration in the X and Y directions or three-dimensional acceleration in the X, Y, and Z directions.

The action states include a first action state corresponding to the user being substantially stationary, a second action state corresponding to the user being in the vehicle, and a third action state corresponding to the user walking.

The condition for determining that the user of the portable device is in the first action state is: the variance or variance of each of the position signals The trend is close to zero. For example, in Fig. 6, the position signal in the Y-axis direction has an average value of 1001 and a variation of 0.116, wherein the direction of gravity is the direction of the Y-axis.

The condition for determining that the user of the portable device is in the second action state is: (1) when the variance of each of the position signals is substantially between the first threshold TH (CAR_L) of the second action state and the second threshold Between the values TH(CAR_R); (2) the average value of each of the position signals is substantially a stable value during a time interval; and (3) the variation time interval of each of the position signals is larger than the smaller one. One of the second action states is the time threshold TH (CAR_T). For example, in FIG. 7A, when the user changes the acceleration in the X-axis direction while driving or while driving, the characteristics of the above conditions are met, and the overall average value and the variance are substantially a stable value -126 And 6361; in Figure 7B, the above two are 740 and 2697; in Figure 7C, the above two are 629 and 3688.

The condition for determining that the user of the portable device is in the third action state is: (1) the respective variances of the position signals are substantially one of the third action states, the first threshold TH (WALK_L) and a second The threshold value is between TH(WALK_R); (2) each of these position signals is substantially cyclically continuous up and down zero-crossing; (3) zero crossing point per unit time The number system is between a third threshold TH (PACE_L) and a fourth threshold TH (PACE_R). For example, in FIGS. 6A to 6C, when the user walks, the waveform of the acceleration of the sensing signal in the X, Y, and Z directions has the aforementioned characteristics, and the variations are 116412, 16464, and 100567, respectively. In addition, the above zero crossing points per unit time It can be regarded as the number of steps per person per unit time. In general, when walking, the number of steps is between about 1.5 and 3.5; therefore, the third threshold can be set to be substantially 1.5 and the fourth threshold is substantially 3.5.

The first to third action states of the user and the conditions for determining the action state are defined by the above-described manner, and one of the steps S230 is implemented, for example, the flowchart of FIG. In terms of variance, the user has the least amount of static variation, and the number of state variations in the vehicle is larger than the variation of the walking state. Step S310 determines whether the number of variations obtained according to the sensing signal is greater than a threshold value of the stationary state. If not, it is determined that the user of the portable device is in a stationary state as shown in step S381. If YES in step S310, step S320 is continued to determine whether the variance obtained according to the sensing signal is between the first threshold and the second threshold of the second action state. If the result of the determination in step S320 is YES, it is determined whether or not the conditions (2) and (3) of the third action state are satisfied. If the determination result in steps S330 and S350 is YES, then as shown in step S383, it is determined that the user of the portable device is in the state of being in the vehicle or driving; if there is any situation, the current user The state is determined to be an unknown state as shown in step S384. If the result of the determination in step S320 is negative, step S340 is performed to determine whether the variance obtained according to the sensing signal is between the first threshold and the second threshold of the second action state. If the result of the determination in step S340 is YES, it is determined whether or not the conditions (2) and (3) of the second action state are satisfied. If the conditions (2) and (3) of the second action state are summarized as the number of steps per unit time, step S360 determines whether the number of steps per unit time (ie, PACE/SEC) is between the third state and the third state. The threshold value TH (PACE_L) and a fourth threshold TH (PACE_R). If the result of the determination in step S360 is YES, it is determined that the action state is determined to be the walking state, as shown in step S382. If the result of the determination in step S360 is NO, it is determined to be an unknown state, as shown in step S384.

The above figure 3 is an embodiment of the implementation of step S230. Generally, the knowledge holder can perform the determination of the above three action states in different orders or judgment manners according to the above principle. In addition, when there are more or different action states, the knowledge person can generally implement step S230 with respect to the relationship of the corresponding feature parameters or other data analysis methods. In addition, it is possible to decide not to issue a reminder signal after entering the unknown state from the known first to third action states.

Further, in the other embodiment based on the flowchart of Fig. 2, in order to avoid the case where the action state change is erroneously determined, the step of preventing erroneous judgment can be increased. For example, in Fig. 4, at time point 402, step S240 determines that the action state has changed from "on the car" to "walking", but at the next time point 403, it is determined that the action state has changed to "on the car". If the time difference between the time points 402 and 403 is short, for example, only 3 seconds, the change process is unreasonable. Therefore, in the embodiment having the step of preventing the erroneous determination, before the step S250 is performed, the step S240 can be determined according to the step S240. Whether the order of change of the action state is reasonable, or whether the action state is maintained for a certain number of times or a certain period of time to determine whether the user's action state has a reasonable change, which will reduce the misjudgment and occur at an inappropriate time. Point the issue of the reminder signal.

In addition, the action status can be defined in advance. In other embodiments The method of event reminding may further include the steps of updating or adding an action state or self-defining the action state, or automatically adjusting parameters and determination conditions therein.

Furthermore, the foregoing portable device can be used to perform the foregoing embodiments of the event reminding method. For example, the control unit 120 acquires or reads the sensing signal from the environmental state sensing unit 110 and performs steps S230 and S240 to determine. Whether the user's action status changes, and thus decide whether to send a reminder signal. In addition, different sources can be promoted by other sources other than portable devices, such as downloading or processing information from websites through wired or wireless means. Based on the above-disclosed embodiments, examples of practical applications are as follows: Example 1: A handheld communication device with an event reminding function, when today is the birthday of a friend in the contact list, will be in the whole day today, for example When the user is detected to change from the walking state to the stationary state, the user is notified that today is the birthday of the friend. In addition, according to the present invention, the handheld communication device can also notify the user that it is a friend's birthday today at a fixed time, for example, 12:00 am; if the user does not confirm, the action state can be changed as described above. , remind this event again. Or repeat the reminder when the action status changes until the user confirms the event.

Example 2: The handheld communication device with the event reminding function receives the call, but because it is used to ride a motorcycle with a hard hat, it is inconvenient to answer the call, or does not notice when riding the bicycle, so the call is missed. When the user arrives at the destination, he may have forgotten that there is a missed call, or he does not know that there is a missed call. When the device detects that the user has changed from cycling to walking State or static state, this time will remind the user that there is just a missed call.

Example 3: The handheld communication device with event reminder function is activated after the user sets the wake-up alarm clock, and obtains other information on the website (such as the weather bureau website) through the network, such as the high probability of rain today, detecting the handheld communication device, for example. When changing from static to walking mode, the user is reminded to bring the rain gear out.

Example 4: When the handheld communication device having the event reminding function detects, for example, that the user changes from the driving state to the stationary state, it indicates that the user has driven to the destination and turns off the car. At this time, the device will have a flashing light or a ringing tone to remind the user not to forget to take the handheld communication device off the vehicle.

Example 5: A handheld communication device with an event reminding function detects a change in ambient light brightness or image when taken out from a pocket or a handbag, and the environmental state change at this time indicates that the user removes or is preparing the mobile phone. To do the next job, you can remind the user that there is an event. In this example, the environmental state sensing unit of the handheld communication device includes, for example, a brightness sensor or an image sensor for sensing changes in ambient light or image of the portable device.

Example 6: When receiving the newsletter, the handheld communication device with the event reminder will immediately inform the user of the new newsletter from the screen or the sound. However, if the user does not pay attention, the communication device will not be confirmed or the newsletter will not be available. Was read. When the device detects that the user has changed from driving or cycling to a stationary state, the user is reminded of an unread newsletter. In addition, if the user still does not read the newsletter, the device can change in the next environmental state. Remind users.

The embodiment of the invention further discloses a computer-readable information storage medium, on which a program is stored, which can be used to execute the event reminding method of the embodiment of the invention. The computer readable information storage medium of the embodiment is, for example but not limited to, an optical information storage medium and a magnetic information storage medium. Optical information storage media include, for example, CD, DVD, HD-DVD, Blu-ray DVD, and the like. The magnetic information storage medium includes, for example, a floppy disk drive, a hard disk drive, a tape drive, and a magnetic optical disk (Magnetic Optical). In addition, computer-readable information storage media also include code that can be transmitted over a network/transport medium (such as air).

Another embodiment of the present invention discloses a computer program product. After the electronic device having the buffer memory is loaded into the computer program product, the electronic device executes a plurality of program instructions for executing the event reminding method of the embodiment of the present invention.

The portable device and the event reminding method with the event reminding function disclosed in the above embodiments of the present invention can detect changes in the environment, analyze and judge, and belong to different states, thereby treating the user as a user. The state of action. When the user makes a change in the action state, the reminder message is delivered to the user. In this way, the user feels better than being disturbed during work, as is the effect of the application example described above. Therefore, the portable device provides a more user-friendly reminder function, further promoting the interaction between the human and the machine, and allowing the user to obtain good use experience.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. It is common in the technical field to which the present invention pertains Those skilled in the art can make various changes and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧ portable device

110‧‧‧Environmental State Sensing Unit

120‧‧‧Control unit

130‧‧‧ memory

401, 402, 403, 404, 405‧‧‧Time of change of action status

FIG. 1 is a block diagram of a portable device with an event reminding function according to an embodiment of the present invention.

FIG. 2 is a flow chart showing an event reminding method according to an embodiment of the present invention.

FIG. 3 is a flow chart showing an embodiment of step S230 in FIG. 2.

Figure 4 is a schematic diagram of the change in state of action over time.

Figure 5 is a waveform diagram showing the change of the sensing signal in the Y-axis direction with time when the user is substantially stationary.

6A to 6C are waveform diagrams showing changes in the sensing signals in the X, Y, and Z axis directions with time when the user walks.

Figures 7A to 7C respectively show waveform diagrams of the sensing signals in the X, Y and Z axis directions as they are sitting in the car or driving.

Claims (58)

A portable device with an event reminding function, the device comprising: an environmental state sensing unit for sensing an environmental state of the portable device to obtain a sensing signal; a control unit when the After the control unit detects an event to alert the user, the control unit determines that the portable device is in one of a plurality of environmental states according to the sensing signal, wherein the control unit is further configured to determine the sensing. Whether the change of the waveform of one of the signals conforms to the waveform change corresponding to one of the environmental states to determine that the portable device is in one of the environmental states; wherein, when the control unit changes according to the sensing signal, When it is determined that the portable device changes from one of the environmental states to another environmental state of the environmental states, the control unit sends a reminder signal to remind the user of the event. The portable device of claim 1, wherein the environmental state is a user action state of the portable device. The portable device of claim 2, wherein the user behavior of the portable device is a continuous action state of the user of the portable device. The portable device of claim 2, wherein the control unit is further configured to detect the sensing signal to generate at least one characteristic parameter, and determine the portable device according to the at least one characteristic parameter. The user is in one of the action states, wherein the sensing signal includes a first location signal, and the first location signal is based on the location of the portable device. Change and change. The portable device of claim 4, wherein the first position signal represents an acceleration in a first direction. The portable device of claim 4, wherein the first position signal represents an angular velocity of a first direction. The portable device of claim 4, wherein the characteristic parameter is based on a variance of the first position signal. The portable device of claim 4, wherein the characteristic parameter is based on an average of the first position signals. The portable device of claim 4, wherein the characteristic parameter is based on a zero-crossing point of the first position signal. The portable device of claim 4, wherein the characteristic parameter is based on an amplitude of the first position signal. The portable device of claim 4, wherein the characteristic parameter is based on a change of the first position signal within a time interval. The portable device of claim 2, wherein the sensing signal comprises a plurality of position signals, wherein the position signals correspond to different directions, and the position signals are associated with the position of the portable device. Change and change. The portable device of claim 12, wherein the position signals are accelerations in respective directions. The portable device of claim 13, wherein the action states comprise a first action state corresponding to the user being substantially stationary. The portable device of claim 14, wherein the control unit determines that the user of the portable device is in a position when the variance of each of the position signals substantially approaches zero. The first action state. The portable device of claim 13, wherein the action states comprise a second action state corresponding to the user being in the vehicle. The portable device of claim 16, wherein: the respective variances of the location signals are substantially between a first threshold and a second threshold; and within a time interval The average value of each of the position signals is substantially a stable value; and when the variation time interval of each of the position signals is greater than a time threshold, the control unit determines that the portable device is The user is in the second action state. The portable device of claim 13, wherein the action states comprise a third action state corresponding to the user walking. The portable device of claim 18, wherein: When the respective variances of the position signals are substantially between a first threshold and a second threshold; and the position signals are each substantially periodically continuous upward and downward zero crossings (zero-crossing) is generated, and the control unit determines that the user of the portable device is in the third action state of the action states. The portable device of claim 19, wherein the zero crossing point per unit time is between a third threshold value and a fourth threshold value. The portable device of claim 1, wherein the environmental states comprise a first action state corresponding to the user being substantially stationary. The portable device of claim 1, wherein the environmental states comprise a second action state corresponding to the user being in the vehicle. The portable device of claim 1, wherein the environmental states comprise a third action state corresponding to the user walking. The portable device of claim 1, further comprising a memory for storing the information of the sensing signal and the action status. The portable device of claim 1, wherein the environmental state sensing unit comprises an acceleration sensor for sensing a change in the position of the portable device. The portable device of claim 1, wherein The environmental state sensing unit further includes an environment sensor for sensing a change in a physical environment of one of the environments of the portable device, and the change of the environment further includes a change of the physical environment. The portable device of claim 1, wherein the environmental state sensing unit comprises an angular velocity sensor for sensing a change in the position of the portable device. The portable device of claim 1, wherein the environmental state sensing unit comprises an image sensor for sensing a change in an environmental image of the portable device. The portable device of claim 1, wherein the environmental state sensing unit comprises a brightness sensor for sensing a change in an environmental image of the portable device. The portable device of claim 1, wherein the control unit is further configured to obtain a content from the portable device, wherein the alert signal is related to the information content. An event reminding method is used in an electronic device, the method comprising: after detecting an event to alert the user, reading a sensing signal, wherein the sensing signal indicates an environment in which the electronic device is located a state of determining, according to the sensing signal, that the electronic device is in one of a plurality of environmental states, the determining step comprising: determining whether a change in a waveform of the sensing signal conforms to a waveform change corresponding to one of the environmental states, Determining that the electronic device is in one of the environmental states; When it is determined that the electronic device changes from one of the environmental states to another environmental state according to the change of the sensing signal, a reminder signal is sent to remind the user of the event. The event reminding method of claim 31, wherein the environmental states comprise a first environmental state corresponding to the user being substantially stationary. The event reminding method of claim 31, wherein the environmental states comprise a second environmental state corresponding to the user being in the vehicle. The event reminding method of claim 31, wherein the environmental states comprise a third environmental state corresponding to a user walking. The event reminding method of claim 31, wherein after detecting the event to remind the user, the method further comprises: obtaining a news content through a website; wherein the reminder signal is Information content related. The event reminding method described in claim 31, wherein the environmental state is a user action state of the portable device. The event reminding method according to claim 36, wherein the user action state of the portable device is a continuous action state of the user of the portable device. The method for alerting an event according to claim 36, wherein the step of determining that the user of the electronic device is in one of the environmental states further comprises: detecting the sensing signal to generate at least one characteristic parameter, And determining, according to the at least the characteristic parameter, that the user of the electronic device is in the one of the action states, wherein the sensing signal includes a first position signal, and the first position signal is changed according to the position of the electronic device. change. The event reminding method of claim 38, wherein the first position signal represents an acceleration in a first direction. The event reminding method of claim 38, wherein the first position signal represents an angular velocity in a first direction. The event reminding method according to claim 38, wherein the characteristic parameter is obtained based on a variance of the first position signal. The event reminding method according to claim 38, wherein the characteristic parameter is obtained based on an average value of the first position signal. The event reminding method according to claim 38, wherein the characteristic parameter is obtained based on a zero-crossing point of the first position signal. The event reminding method according to claim 38, wherein the characteristic parameter is obtained based on an amplitude of the first position signal. The event reminding method of claim 38, wherein the characteristic parameter is based on a change of the first position signal within a time interval. The method for alerting an event according to claim 36, wherein the determining that the user of the electronic device is in one of the environmental states: the sensing signal includes a plurality of position signals, and the positions The signals correspond to different directions, and the position signals change as the position of the electronic device changes. The event reminding method described in claim 46, wherein the signal numbers are accelerations in respective corresponding directions. The event reminding method of claim 47, wherein the action states include a first action state corresponding to the user being substantially stationary. The event reminding method according to claim 48, wherein when the variance of each of the position signals substantially approaches zero, it is determined that the user of the electronic device is in the first action state. The event reminding method of claim 47, wherein the action states include a second action state corresponding to the user being in the vehicle. The event reminding method according to claim 50, wherein: when each of the position signals has a variance value substantially between a first threshold value and a second threshold value; and within a time interval, The average value of each of the position signals is substantially a stable value; and when the variation time interval of each of the position signals is greater than a time threshold, the user of the electronic device is determined to be in the first Second action status. For example, the event reminding method described in item 47 of the patent application scope, The action states include a third action state corresponding to the user walking. The method for reminding an event according to claim 52, wherein: the respective variances of the location signals are substantially between a first threshold and a second threshold; and the respective location signals are In essence, there is a periodic continuous upward and downward zero-crossing generation, and it is determined that the user of the electronic device is in the third action state of the action states. For example, the event reminding method described in claim 53 wherein the zero crossing point per unit time is between a third threshold and a fourth threshold. The event reminding method as described in claim 54 wherein the third threshold is about 1.5 and the fourth threshold is about 3.5. The method for reminding an event according to claim 31, wherein the method further comprises: determining, after at least one previous action state, whether the current action state is correct according to at least the previous action state. A computer program product, when a buffer memory-electronic device is loaded into the computer program product, the electronic device executes a plurality of program instructions, and the program instructions are used to execute the event reminding method as described in claim 31 . A computer readable information storage medium on which a plurality of program instructions are stored, and when there is a buffer memory, an electronic device loads the program instructions The electronic device executes the program instructions, and the program instructions are used to execute the event reminding method as described in claim 31 of the patent application.