TWI406169B - Electronic device and its automatic control method - Google Patents

Abstract

An electronic device includes a light source sensing module, an angle tilt sensing module, an adjustment signal generating module and a display unit. The light source sensing module is provided to generate a brightness signal according to the brightness of an environmental light source. The angle tilt sensing module is provided to generate at least one angle tilt signal according to at least one tilted angle of the electronic device. The adjustment signal generating module is provided to generate a brightness adjustment signal according to the brightness signal and the angle tilt signal. The display unit is provided to control a display brightness according to the brightness adjustment signal.

Description

Electronic device and automatic control method thereof

The invention relates to an electronic device control technology, in particular to an electronic device and an automatic control method for automatically controlling the operation and display brightness according to a brightness signal and a tilt signal.

In recent years, thanks to the improvement of semiconductor technology, the display device has the advantages of thinness, light weight, high resolution, low power consumption, long life, and the like, and thus is widely used in various portable electronic products, for example, notebook computers, Mobile phones, Personal Digital Assistant (PDA), digital cameras, etc.

Due to the mobility of portable electronic products, they are exposed to various ambient light sources depending on the environment in which the user is located. For example, in an outdoor large sun environment, the ambient light source is relatively high in brightness, and the ambient light source is relatively low in an environment where the indoor light is insufficient. When the brightness of the ambient light source is too high, the contrast between the brightness of the display device and the brightness of the ambient light source may be too large, so that the user feels that the brightness of the display device is too dark; conversely, when the brightness of the ambient light source is low, there is also brightness contrast. Too large a problem; it is very easy to cause visual discomfort to the user, and if the display device is displayed with the same brightness, it often causes unnecessary power consumption.

In order to overcome the above problems, the brightness of the display device must be automatically adjusted according to different use environment conditions. The existing processing method uses a light source sensor (for example, a light-sensor) to detect the brightness of the ambient light source, and then automatically adjusts the display device according to the detected brightness of the ambient light source. The brightness is set; however, the detection result of the light source sensor is used as the judgment basis for the brightness adjustment, and the situation in which the judgment is inaccurate due to the difference in the tilt angle of the display device is often caused, so that the brightness adjustment effect is not as expected.

Accordingly, it is an object of the present invention to provide an electronic device that automatically controls display brightness.

Therefore, the electronic device of the present invention comprises a light source sensing module, a tilt sensing module, an adjustment signal generating module, and a display unit. The light source sensing module is configured to generate a brightness signal according to an ambient light source brightness. The tilt sensing module is configured to generate at least one tilt signal according to at least one tilt angle of the electronic device. The adjustment signal generating module is configured to generate a brightness adjustment signal according to the brightness signal and the tilt signal, wherein the adjustment signal generation module is configured to sense the brightness of the ambient light source according to the tilt angle The brightness signal generated by the angle sensor and the tilt signal sensed by the tilt sensing module obtains a target display brightness, and then displays the brightness according to the target to generate the brightness adjustment signal. The display unit is configured to control a display brightness according to the brightness adjustment signal.

Another object of the present invention is to provide a method of automatically controlling display brightness.

Therefore, the method for automatically controlling the display brightness of the present invention is applicable to an electronic device, the method comprising the steps of: (a) generating a brightness signal according to an ambient light source brightness; (b) according to at least one tilt angle of the electronic device, Generating at least one tilt signal; (c) obtaining a target display brightness according to the brightness signal and the tilt signal generated at the tilt angle, and then according to The target displays brightness to generate a brightness adjustment signal; (d) controlling one of the display brightness of one of the electronic devices according to the brightness adjustment signal.

It is still another object of the present invention to provide a brightness adjustment method.

Therefore, the brightness adjustment method of the present invention is applicable to a display, and the method comprises the steps of: generating a brightness adjustment according to a brightness signal corresponding to a brightness of an ambient light source and a tilt angle signal corresponding to a tilt angle of a display plane of the display a signal for the display to control the brightness of the display, wherein the brightness adjustment signal is based on the brightness signal at the tilt angle and the tilt signal to obtain a target display brightness, and then the display brightness is generated according to the target.

It is still another object of the present invention to provide a backlight brightness adjustment method.

Therefore, the backlight brightness adjustment method of the present invention is applicable to a display having at least one backlight, the method comprising the steps of: one brightness signal according to a brightness corresponding to an ambient light source, and one tilt angle corresponding to a display plane of the display The dip signal generates a brightness adjustment signal for the display to control the illumination intensity of the backlight, wherein the brightness adjustment signal obtains a target display brightness according to the brightness signal and the dip signal at the tilt angle, and then according to the The target display brightness is generated.

It is still another object of the present invention to provide a method of automatically controlling display brightness.

Therefore, the method for automatically controlling the display brightness of the present invention is applicable to an electronic device, and the method comprises the following steps: (a) according to the brightness of an ambient light source, Generating a brightness adjustment signal; (b) generating a brightness adjustment signal according to the brightness signal; (c) generating a tilt signal according to an inclination angle of the electronic device; (d) correcting the brightness adjustment signal according to the inclination signal; (e) controlling, according to the corrected brightness adjustment signal, a display brightness of one of the display devices of the electronic device.

It is still another object of the present invention to provide an electronic device automatic control method.

Therefore, the electronic device automatic control method of the present invention comprises the steps of: (a) generating a luminance signal according to an ambient light source brightness; (b) generating a tilt signal according to an inclination angle of the electronic device; (c) according to the brightness The signal and the dip signal generate a control signal, wherein the control signal is an interactive effect signal; (d) controlling the operation of the electronic device according to the control signal.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of FIG.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 and FIG. 2, a first preferred embodiment of the electronic device 1 of the present invention includes a light source sensing module 11, a tilt sensing module 12, an adjustment signal generating module 13, and a display unit 14, The implementation aspect is a portable electronic device (for example, a notebook computer, a mobile phone, a PDA, a digital camera, etc.).

The light source sensing module 11 senses the brightness of an ambient light source to generate a brightness signal. The light source sensing module 11 can be a light sensor, a photoresistor, or other similar component having a sensing brightness function. As shown in FIG. 2, in the preferred embodiment, the light source sensing module 11 and the display plane of the display unit 14 are on the same side and adjacent to the display plane; however, the light source sensing module 11 may also be located in other The position is not limited to the preferred embodiment; however, the position of the light source sensing module 11 affects the sensed brightness and further affects the brightness adjustment effect of the present invention.

The tilt sensing module 12 measures at least one tilt angle of the electronic device 1 to generate at least one tilt signal. The tilt sensing module 12 is required to process the adjusted signal generating module 13 according to the tilt angle of the electronic device 1 and at least one of an X axis, a Y axis, and a Z axis. The tilt signal; or the tilt angle signal is generated according to the tilt angle of the display plane of the display unit 14 and the X and Y axis planes. The tilt sensing module 12 can be an acceleration sensor (G-sensor), a gyroscope, or other similar component having a function of sensing the tilt angle.

The adjustment signal generating module 13 generates a brightness adjustment signal according to the brightness signal sensed by the light source sensing module 11 and the tilt signal generated by the tilt sensing module 12. The adjustment signal generating module 13 can be implemented in a soft body, a firmware or a hardware, and integrated into the electronic device 1.

The display unit 14 includes a backlight module 141 that provides a backlight, and a display screen 142. The display unit 14 is a liquid crystal display (LCD) unit, and the display screen 142 is a liquid crystal panel. The backlight module 141 adjusts the backlight illumination intensity according to the brightness adjustment signal. The brightness of one of the display screens 142 is displayed; however, the display unit 14 can also be a self-illuminating organic electroluminescent (OLED) display unit, and is not limited to the illustration of the preferred embodiment.

Referring to FIG. 1, FIG. 2 and FIG. 3, corresponding to the first preferred embodiment, the method for automatically controlling the display brightness of the present invention comprises the following steps.

First, as shown in steps 21 and 22, the light source sensing module 11 generates the brightness signal according to the brightness of the ambient light source; the tilt sensing module 12 generates the tilt signal according to the tilt angle.

Then, as shown in steps 23 to 25, the adjustment signal generating module 13 generates the brightness adjustment signal according to the brightness signal and the tilt signal.

In step 23, the adjustment signal generating module 13 first obtains a target display brightness according to the brightness signal and the tilt signal; the target display brightness can query a preset correspondence table according to the brightness signal and the tilt signal. Or; using a pre-defined judgment formula, inputting the luminance signal and the dip signal to obtain. The preset correspondence table and the pre-defined judgment formula can be established based on the experiment and past experience values.

For example, when the electronic device 1 is a mobile phone and is placed on an indoor desktop, the inclination sensing module 12 senses the result as the X, Y, and Z axis clamp angles in FIG. 2, respectively. 90, 0, 90 degrees, and the brightness sensing signal of the indoor light source is assumed to be 1000 lux, and then the adjustment signal generating module 13 is queried according to the set of dip signals and brightness signals. The target correspondence table or the judgment formula is obtained to obtain the target display brightness, for example, 250 candela.

When the user picks up the electronic device 1 from the desktop and wants to view it, it is assumed In this viewing state, the electronic device 1 and the desktop are 45 degrees, that is, the angle sensing module 12 senses an angle of 90, 0, and 45 degrees with respect to the X, Y, and Z axes of FIG. 2, respectively. The sensing module 11 senses that the brightness signal of the indoor light source is assumed to be 480 lux, and then the adjustment signal generating module 13 queries the corresponding table or judgment according to the set of dip signals and brightness signals to obtain another target. Display brightness, for example 300 candelas.

In step 24, if the difference between the target display brightness and the current display brightness of one of the display screens 142 is greater than a threshold value, it indicates that the display brightness adjustment needs to be performed, and the process of step 25 is continued; otherwise, it means that no need is needed. Perform display brightness adjustment and return to step 21 above. In step 25, the brightness adjustment signal is generated according to the target display brightness.

It is worth mentioning that the adjustment signal generating module 13 can first generate the brightness adjustment signal according to the brightness signal, and further correct the brightness adjustment signal according to the inclination signal as a basis for brightness adjustment.

Finally, as shown in step 26, the backlight module 141 controls the display brightness of the display screen 142 according to the brightness adjustment signal.

Referring to FIG. 4 and FIG. 5, a second preferred embodiment of the electronic device 3 of the present invention includes a light source sensing module 11 and a tilt sensing module 12, an adjustment signal generating module 31, and a brightness of FIG. The adjustment module 32 and a display screen 33 are implemented as a desktop display (for example, an LCD display, an OLED display, etc.). The brightness adjustment module 32 can be the backlight module 141 (for an LCD display) or a brightness control circuit (for an OLED display) in the first preferred embodiment. The display screen 33 can be, for example, a liquid crystal panel, or an OLED panel. Same or similar to the first preferred embodiment The components are not described in detail. The following are only the main differences.

The adjustment signal generating module 31 can perform the above steps 23 to 25 to generate the brightness adjustment signal. However, in a general application, the desktop display is less moved, so the change of the brightness and the tilt angle of the ambient light source is not frequent and relatively strong in the first preferred embodiment; therefore, the adjustment signal generating module 31 can be The ambient light source suddenly changes sharply (for example, the dark state of the unlit light, to the light-on state), or when the tilt angle suddenly changes drastically (eg, rotating or moving the display), one of the conditions is true. Brightness adjustment signal.

Referring to FIG. 6 and FIG. 7 , a third preferred embodiment of the electronic device 4 of the present invention includes a light source sensing module 11 , a tilt sensing module 12 , a control signal generating module 41 , and a The control module 42 is implemented as a portable electronic device. The same or similar components as the first preferred embodiment will not be described again, and only the main differences will be described below.

The control signal generating module 41 generates a control signal according to the brightness signal and the tilt signal generated by the light source sensing module 11 and the tilt sensing module 12. The control module 42 controls the operation of the electronic device 4 according to the control signal.

Corresponding to the above-described third preferred embodiment, the electronic device automatic control method of the present invention comprises the following steps, and only the steps different from the first preferred embodiment will be described.

In step 43, the control signal generating module 41 generates the control signal according to the brightness signal and the tilt signal; wherein the control signal can be an example. Such as a wake-up signal, a sleep mode signal, a button backlight control signal, or an interactive effect signal. In step 44, the control module 42 controls the operation of the electronic device 4 according to the type of the control signal. For example, when the control signal is a wake-up signal, the electronic device 4 is brought into a non-power saving mode by a power-saving mode; when the control signal is a sleep mode signal, the electronic device 4 is not saved. The electric mode enters the power saving mode; when the control signal is the button backlight control signal, the backlight of the electronic device 4 can be turned on or off; when the control signal is an interactive effect signal, the corresponding sound and music can be sent according to requirements. Or change the display of the screen. Thereby, the convenience and interest of the electronic device 4 are increased.

In summary, the brightness signal and the tilt signal generated by the light source sensing module 11 and the tilt sensing module 12 are used as the basis for generating the brightness adjustment signal to automatically control the display brightness to enable the electronic device 2, 3 4, more power-saving and increase standby time, and improve the user's visual comfort; more broadly speaking, the present invention automatically controls the operation of the electronic device 4 by using the brightness signal and the dip signal, so that the effect is more It is rich and user-friendly; it is indeed possible to achieve the object of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1‧‧‧Electronic device

11‧‧‧Light source sensing module

12‧‧‧Dip angle sensing module

13‧‧‧Adjust signal generation module

14‧‧‧Display unit

141‧‧‧Backlight module

142‧‧‧ Display screen

21~26‧‧‧Steps

3‧‧‧Electronic devices

31‧‧‧Adjustment signal generation module

32‧‧‧Brightness adjustment module

33‧‧‧ Display screen

4‧‧‧Electronic devices

41‧‧‧Control signal generation module

42‧‧‧Control Module

43~44‧‧‧Steps

1 is a block diagram showing the first preferred embodiment of the electronic device of the present invention FIG. 2 is a schematic view showing one embodiment of the first preferred embodiment; FIG. 3 is a flow chart illustrating a method for automatically controlling display brightness corresponding to the electronic device shown in FIG. 1; A block diagram illustrating a second preferred embodiment of the electronic device of the present invention; FIG. 5 is a schematic view showing one embodiment of the second preferred embodiment; FIG. 6 is a block diagram showing the electronic device of the present invention A third preferred embodiment; and FIG. 7 is a flow chart illustrating an automatic control method corresponding to the electronic device shown in FIG.

1‧‧‧Electronic device

11‧‧‧Light source sensing module

12‧‧‧Dip angle sensing module

13‧‧‧Adjust signal generation module

14‧‧‧Display unit

141‧‧‧Backlight module

142‧‧‧Show

Claims (15)

An electronic device includes: a light source sensing module for generating a brightness signal according to an ambient light source brightness; and a tilt sensing module for generating at least one tilt signal according to at least one tilt angle of the electronic device An adjustment signal generating module is configured to generate a brightness adjustment signal according to the brightness signal and the tilt signal, wherein the adjustment signal generation module is configured to sense the environment according to the tilt angle The brightness signal generated by the brightness of the light source, and the tilt signal generated by the tilt sensing module, obtains a target display brightness, and then displays the brightness according to the target to generate the brightness adjustment signal; and a display unit, To adjust the display brightness according to the brightness adjustment signal. The electronic device of claim 1, wherein the display unit comprises a backlight module that provides a backlight, and the backlight module controls the backlight illumination intensity according to the brightness adjustment signal. According to the electronic device of claim 1, wherein the adjustment signal generating module queries a preset correspondence table according to the brightness signal and the tilt signal at the tilt angle to obtain the target display brightness. . According to the electronic device of claim 1, wherein the adjustment signal generation module inputs the brightness signal and the inclination signal at the oblique angle by using a predetermined judgment formula to obtain the target display. Show brightness. A method for automatically controlling display brightness is applicable to an electronic device, the method comprising the steps of: (a) generating a brightness signal according to an ambient light source brightness; and (b) generating at least one according to at least one tilt angle of the electronic device. a tilting signal; (c) obtaining a target display brightness according to the brightness signal and the tilt signal generated at the tilt angle, and displaying brightness according to the target to generate a brightness adjustment signal; (d) adjusting the signal according to the brightness Controlling one of the electronic devices to display a display brightness of the screen. The method for automatically controlling display brightness according to item 5 of the patent application scope, wherein in the step (d), the backlight illumination intensity of one of the display screens is controlled according to the brightness adjustment signal. The method for automatically controlling the display brightness according to the fifth aspect of the patent application, wherein in the step (c), the preset correspondence table is queried according to the brightness signal and the tilt signal at the tilt angle. And get the target display brightness. The method for automatically controlling display brightness according to claim 5, wherein in the step (c), the brightness signal and the tilt signal are input at the tilt angle by using a predetermined judgment formula. The target display brightness is obtained. A brightness adjustment method is applicable to a display, and the method comprises the following steps: according to a brightness signal corresponding to an ambient light source brightness, and corresponding One of the tilt angles of the display plane of the display generates a brightness adjustment signal for the display to control the display brightness, wherein the brightness adjustment signal is obtained according to the brightness signal and the tilt signal at the tilt angle A target displays brightness, which is then generated based on the target display brightness. According to the brightness adjustment method of claim 9, wherein the target display brightness is obtained by querying a preset correspondence table according to the brightness signal and the tilt signal at the tilt angle. The brightness adjustment method according to claim 9, wherein the target display brightness is obtained by inputting the brightness signal and the tilt signal at the tilt angle by using a predetermined judgment formula. A backlight brightness adjustment method is applicable to a display having at least one backlight, the method comprising the steps of: according to a luminance signal corresponding to an ambient light source brightness, and a tilt angle signal corresponding to a tilt angle of a display plane of the display, Generating a brightness adjustment signal for the display to control the illumination intensity of the backlight, wherein the brightness adjustment signal obtains a target display brightness according to the brightness signal and the tilt signal at the tilt angle, and then displays the brightness according to the target Produced. The backlight brightness adjustment method according to claim 12, wherein the target display brightness is obtained by querying a preset correspondence table according to the brightness signal and the tilt signal at the tilt angle. The backlight brightness adjustment method according to claim 12, wherein the target display brightness is obtained by inputting the brightness signal and the tilt signal at the tilt angle by using a predetermined judgment formula. A method for automatically controlling display brightness is applicable to an electronic device, the method comprising the steps of: (a) generating a brightness signal according to an ambient light source brightness; (b) generating a brightness adjustment signal according to the brightness signal; (c) And generating a tilt signal according to the tilt angle of the electronic device; (d) correcting the brightness adjustment signal according to the tilt signal; (e) controlling one of the electronic device to display the screen according to the corrected brightness adjustment signal One shows the brightness.