CN101621586B - Handheld device and its power saving method - Google Patents

Abstract

The invention is a hand-held device, having a display, comprising: and the processor is electrically connected with the optical sensor, wherein when the processor judges that a call event occurs, the processor enables the optical sensor to control the display. In addition, the invention also discloses a power saving method of the handheld device, when a call event occurs, the following steps are executed: measuring an environment brightness value of a handheld device; continuously judging whether a variable quantity of the environment brightness value meets at least one preset condition; and if the variable quantity meets the preset condition, closing the display of a display of the handheld device. The handheld device and the power saving method thereof utilize the optical sensor to judge whether the user is in the handheld answering or speaking state so as to close the function or element which is not needed to be used, thereby reducing the waste of power supply and achieving the operation effect of prolonging the service time of the handheld device, not only saving power and prolonging the service time of a battery, but also saving production cost.

Description

Handheld device and its power saving method

technical field

The present invention relates to a power-saving technology of a handheld device, in particular to a method of judging the brightness change around the handheld device based on the action of a light sensor in different call behavior modes, and determining the display state of the handheld device accordingly. technology.

Background technique

For users of handheld devices such as mobile phones or personal digital assistants (PDAs), how to increase the use time of the handheld devices is an important issue both in industry and business. Since not all devices and components need to be in the open state all the time during the use of the handheld device, at an appropriate time or state, properly closing the functions or components that the user does not need to use can achieve a certain degree of saving. electric effect.

Because the screen of the handheld device consumes a lot of power, in the prior art, the handheld device usually uses software technology to set a preset time, and when the handheld device is idle for more than the preset time, the screen will be automatically turned off, thus saving energy. power consumption. However, with this design, when the handheld device is in the state of receiving a call or dialing a call, the screen of the handheld device will still be turned on for a period of time, and the screen will not be turned off until the preset time expires. Since the handheld device does not need to use the screen when it is in a call state, using the above-mentioned prior art method will cause unnecessary power consumption, and also shorten the use time of the handheld device.

There are already a few handheld devices on the market that have the function of turning off the screen during a call, but these products need to be combined with a touch sensor (Cap sensor) or a proximity sensor (proximity sensor) to achieve the effect of this application, and the cost is relatively low. high.

Contents of the invention

An object of the present invention is to provide a power-saving, low-cost handheld device.

Another object of the present invention is to provide a power saving method for a handheld device. Based on the occurrence of a call event, the light sensor measures the brightness change of the surrounding environment to determine the display status of the handheld device.

To achieve the above object, the present invention provides a handheld device with a display, including: a processor electrically connected to a light sensor; wherein, when the processor determines that a call event occurs, the processor The light sensor is enabled to control the display.

Wherein, the call event refers to that the handheld device answers an incoming call or dials a call.

Wherein, the processor also monitors whether a measurement result of the light sensor meets at least one preset condition, so as to decide whether to turn off the display of the display.

Wherein, after the call event occurs, the aforementioned processor reads the measurement value of the light sensor as a reference value, and compares the reference value with the continuous measurement value of the light sensor as the measurement result .

Wherein, if the processor fails to determine whether the measurement result of the light sensor meets the preset condition within a preset period of time, the processor turns off the display of the display after the preset period of time.

Wherein, the preset condition is the change of the measured value of the light sensor relative to the ambient brightness corresponding to the reference value.

Wherein, when the reference value is less than a critical value, the processor monitors whether the measurement result of the light sensor meets a first preset condition, and the first preset condition is to use the reference value in a relatively bright environment The range of the corresponding ambient brightness change.

Wherein when the reference value is greater than a critical value, the processor monitors whether the measurement result of the light sensor meets a second preset condition, and the second preset condition is determined by the reference value in a relatively dark environment The range of the corresponding ambient brightness change.

In order to achieve the above object, the present invention further provides a power saving method of a handheld device. When a call event occurs, the following steps are performed: measuring an ambient brightness value of a handheld device; continuously judging a change of the ambient brightness value Whether the amount meets at least one preset condition; and if the change amount meets the preset condition, turn off a display of the handheld device.

Wherein, the aforementioned power saving method for the handheld device further includes: if it is unable to judge whether the change amount meets the preset condition within a preset period of time, then turn off the display of the display after the preset period of time.

The hand-held device and its power-saving method of the present invention use a light sensor to judge whether the user is in the hand-held answering or speaking state, so as to turn off unused functions or components, in order to reduce power waste and extend the use time of the hand-held device. effectiveness.

The present invention can achieve the above purpose only by using the light sensor, which can not only save power and prolong the service time of the battery, but also save production cost.

Description of drawings

Fig. 1 is the front view of the handheld device of the present invention;

Fig. 2 is a system block diagram of a preferred embodiment of the present invention;

FIG. 3 is a flow chart of the power saving method of the present invention.

Detailed ways

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with accompanying drawings.

As shown in FIG. 1 , it is a front view showing a handheld device 10 of the present invention. According to a preferred embodiment of the present invention, the handheld device 10 is exemplified by a mobile phone, but it is not limited to a mobile phone, as long as a handheld device or electronic device with a call function, such as a personal digital assistant (PDA), a digital camera, etc. In order to realize the handheld device of the present invention. The handheld device 10 of the present invention has a receiver 13, and a light sensor 12 is arranged beside the receiver 13, and the light sensor 12 can detect brightness changes around the receiver 13. The preferred position of the light sensor 12 is that when the receiver 13 is close to the user's ear, the ear will cover the light sensor 12 . Therefore, by the light sensor 12 detecting the brightness change around the receiver 13, it can be further judged whether the user is in the receiver mode or the hands-free receiver mode.

As shown in Fig. 2, it shows a system block diagram of a preferred embodiment of the present invention. In a preferred embodiment of the present invention, a handheld device 10 has a display 11 , the handheld device 10 includes: a processor 14 , and the processor 14 is electrically connected to a light sensor 12 . When the processor 14 determines that a call event occurs in the handheld device 10, the processor 14 will enable the light sensor 12, and obtain a measurement value of an initial ambient brightness from the light sensor 12, And the call event means that the user operates the hand-held device 10 to decide whether to answer an incoming call (incoming call) or decide whether to utilize the hand-held device 10 to dial a call (dialing call), because after the call event occurs, the user The behavior modes of answering and hands-free answering can be implemented, and the answering behavior mode can be judged by the processor 14 according to the brightness change measured by the light sensor 12 . The processor 14 is also connected to the display 11 through the LCM interface. When the measurement result monitored by the processor 14 meets at least one preset condition, the processor 14 turns off the display of the display 11 to save power. In other words, the light sensor in the present invention can not only adjust the brightness of the backlight module (backlight module) in time according to different usage environments, but also can be used to turn off the display after a call event occurs to save power.

As shown in FIG. 3 , it is a flow chart showing the power saving method of the present invention. The flow of the power saving method of the present invention is described by taking receiving an incoming call as a call event as an example. When the user operates the handheld device 10 to answer an incoming call (step 101), the processor 14 enables (enable) the light sensor 12 and obtains an initial measurement value (step 102), which is used as Before the user makes a call, the reference value of the brightness of the environment where the handheld device 10 is located. Due to the environment with different brightness, the degree of brightness change caused by the hand-held device 10 being close to the ear receiver 13 is also different. Therefore, various preset conditions of the handheld device 10 need to be adjusted for environments with different brightness. After the handheld device 10 answers the incoming call, the processor 14 will first determine whether the measurement value measured by the light sensor 12 is greater than a threshold (step 103), that is, the handheld device 10 decides to use A brighter or darker ambient brightness standard is used as the basis for sensing. If the measured value exceeds the critical value, the processor 14 will determine that the handheld device 10 is in a relatively bright environment, so the first preset condition will be adopted to determine whether the user "lifts" the handheld device 10. Lift up and close to the ear" behavior and be in the talking state (steps 107, 114).

Since the process of "lifting and close to the ear" of the hand-held device 10 will have different speeds depending on the behavior of different users, when determining the first preset condition, the first preset condition can also be calculated by different sampling times. Assuming the setting content of the condition, when the variation of the measured value obtained by the light sensor 12 (ie, a set variation range) meets the first preset condition, it means that the handheld device 10 performs "lifting and Close to the ear" action.

The processor 14 further judges whether the handheld device 10 is in the handheld receiving mode (receiver mode) to answer the incoming call according to the ambient brightness change measured by the light sensor 12 (step 105), if the handheld device 10 is not In the hands-free answering mode (such as hands-free answering mode, hand-free receiver mode), the processor 14 will control the display of the display 11 based on the setting of the hands-free answering mode (step 106).

If the user answers in the hand-held answering mode, the processor 14 in the hand-held device 10 continues to obtain the measurement value of the light sensor 12 after answering the incoming call (step 107), and further determines the variation of the measurement value Whether it meets the aforementioned first preset condition (step 108). If meet this first preset condition, then turn off the display of display (step 109), after waiting to hang up (hang up) call, control the state of this display by software (step 119). If the first preset condition is not met or it cannot be judged whether the first preset condition is met, the processor 14 will judge whether it exceeds a preset period of time (step 110), and the preset period of time is usually ranging from a few seconds to a few minutes , which can be set by the user or used according to the original factory settings; and after exceeding the preset period of time, the display of the display 11 is turned off, or the display state of the display is controlled by the system software of the handheld device 10 (step 111 ); if the preset time period is not exceeded, then perform steps 107 and 108 again. Finally, after the call is hung up, the state of the display is controlled by the software (step 119). In this way, when the light sensor 12 cannot successfully obtain the measured value under special circumstances, the display of the display 11 can still be forcibly turned off, or other power-saving modes can be used to achieve power-saving effects.

In addition, this preferred embodiment can also correctly determine the listening state of the handheld device 10 in a dark environment, and the light sensor 12 used in this preferred embodiment has different sensitivities to reflect different brightness changes. Therefore, when the handheld device 10 answers the incoming call, if the measured value is less than the critical value, the processor 14 can determine that the handheld device 10 is in a relatively dark environment, and the second preset condition will be used to determine the Whether the hand-held device 10 performs the action of "lifting and close to the ear" and is in the hand-held listening state (step 112).

When determining the second preset condition, the setting content of the second preset condition is calculated by using different sampling times in a darker environment. When the variation of the measured value obtained by the light sensor 12 When the second preset condition is met, it means that the handheld device 10 performs an action of "lifting it up and putting it close to the ear".

The processor 14 further judges whether the hand-held device 10 is in the hand-held answering mode to answer the incoming call (step 113), if the hand-held device 10 is not in the hand-held answering mode (such as the hands-free answering mode), then based on the hands-free answering mode Set to control the display of the display 11 (step 106).

If answering in the handheld answering mode, the processor 14 in the handheld device 10 continues to obtain the measurement value of the light sensor 12 after answering (step 114 ). And further determine whether the amount of change of the measured value meets the aforementioned second preset condition (step 115), if it meets the second preset condition, then turn off the display of the display (step 116), and after the call is hung up, the software The status of the control display (step 119); if the second preset condition is not met or it cannot be judged whether the second preset condition is met, the processor 14 will judge whether the preset period is exceeded (step 117), and when the preset Turn off the display of the display 11 after setting a period of time, or also set the display state of the display (step 118) controlled by the system software of the handheld device 10, and finally hang up the call, and control the state of the display by the software (step 119 ); if the preset time period is not exceeded, then perform steps 114 and 115 again. In this way, when the light sensor 12 cannot successfully obtain the measured value under special circumstances, the effect of power saving can still be achieved by forcibly turning off the display of the display 11 or entering into other power saving modes.

In addition, when the user is in the call event of dialing and making a call, the processor 14 can also use the same process steps as above to determine whether the handheld device 10 is in the handheld answering mode of "lifting and close to the ear" or in the hands-free mode. Hold the dialing action in answering mode, and then turn off the display to save power. Therefore, the handheld device 10 can automatically turn off the display to save power no matter it is in the state of making a call or in the state of receiving a call.

To sum up, what is described in this specification are only several preferred specific embodiments of the present invention, and the above embodiments are only used to illustrate the technical solution of the present invention rather than limit it. All technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the protection scope of the claims of the present invention.

Claims (6)

1. a hand-held device has display, comprises: a processor is electrically connected at an OPTICAL SENSORS; It is characterized in that: said processor judges whether a conversation incident takes place; After said conversation incident takes place; The said OPTICAL SENSORS of said processor activation, to control said display, whether the measurement result that said processor is more monitored said OPTICAL SENSORS meets at least one pre-conditioned; Whether close the demonstration of said display with decision

After wherein said conversation incident took place, said processor read a measured value of said OPTICAL SENSORS as a fiducial value, and the said measured value comparison that said fiducial value and said OPTICAL SENSORS are continued is with as said measurement result; Said pre-conditioned be the said measurement variation of the said OPTICAL SENSORS that relatively changes of the pairing ambient brightness of said fiducial value,

Said fiducial value is during greater than a critical value; It is one first pre-conditioned whether the said measurement result that said processor is monitored said OPTICAL SENSORS meets, said first pre-conditioned be the scope that changes with the pairing ambient brightness of said fiducial value at brighter relatively environment; Said fiducial value is during less than a critical value; It is one second pre-conditioned whether the said measurement result that said processor is monitored said OPTICAL SENSORS meets, said second pre-conditioned be the scope that changes with the pairing ambient brightness of said fiducial value at darker relatively environment.

2. hand-held device as claimed in claim 1 is characterized in that: when said hand-held device was in an answer mode, said processor cut out the demonstration of said display according to the said measurement result of said OPTICAL SENSORS under said answer mode.

3. hand-held device as claimed in claim 1 is characterized in that: when said hand-held device is in a hand-free answer mode, said processor based on the setting of said hand-free answer mode to control the demonstration of said display.

4. hand-held device as claimed in claim 1 is characterized in that: said conversation incident is meant that said hand-held device answers an incoming call conversation or the call conversation that dials.

5. the electricity saving method of a hand-held device, after a conversation incident takes place, carry out following steps:

Measure the residing ambient brightness value of hand-hold device;

Continue to judge whether a variable quantity of said ambient brightness value meets at least one pre-conditioned; And

If it is said pre-conditioned that said variable quantity meets, then close the demonstration of a display of said hand-held device, said pre-conditioned be the scope that said ambient brightness value changes relatively

Wherein further be included in after the said conversation incident generation; As a fiducial value,, adopt one second pre-conditioned said ambient brightness value when said fiducial value during less than a critical value; When said fiducial value during, adopt one first pre-conditioned greater than said critical value; Said first pre-conditioned be the scope that under relatively brighter environment, changes with the pairing ambient brightness of said fiducial value, said second pre-conditioned be with the scope of the pairing ambient brightness variation of said fiducial value under darker relatively environment.

6. electricity saving method as claimed in claim 5; It is characterized in that further comprising: after said conversation incident takes place; Said hand-held device gets into an answer mode, and it is said pre-conditioned to judge whether said variable quantity meets, and whether closes the demonstration of said display with decision.

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