WO2011120434A1

WO2011120434A1 - Method and device for adjusting brightness in paper-like display device and paper-like display system

Info

Publication number: WO2011120434A1
Application number: PCT/CN2011/072311
Authority: WO
Inventors: 刘源; 苏红宏
Original assignee: 华为终端有限公司
Priority date: 2010-03-31
Filing date: 2011-03-30
Publication date: 2011-10-06
Also published as: CN101794554A

Abstract

The embodiments of the present invention relate to a method and device for adjusting brightness in a paper-like display device and a paper-like display system. The method comprises: detecting the brightness of environment light of the paper-like display device to acquire an environment light intensity value; comparing the environment light intensity value with a preset adjustment threshold parameter to acquire a comparison result; and adjusting the light intensity value of an illumination system of the paper-like display device according to the comparison result. The environment light intensity value is compared with the preset adjustment threshold parameter so that the illumination system of the paper-like display device adjusts the environment light intensity value according to the environment of the paper-like display device; therefore, the method and device for adjusting the brightness in the paper-like display device and the paper-like display system, provided by the embodiments of the present invention, promote the user experience during the reading of the paper-like display device, and reduce the power consumption of the illumination system of the paper-like display device effectively.

Description

The present invention claims to be submitted to the Chinese Patent Office on March 31, 2010, and the application number is 201010138784.6, and the invention name is "the brightness adjustment method and device in the paper-like display device, The priority of the Chinese patent application of the paper-like display system is incorporated herein by reference. Technical field

Embodiments of the present invention relate to the field of electronic technologies, and in particular, to a brightness adjustment method and apparatus, and a paper-like display system in a paper-like display device. Background technique

With the rapid development of computer technology, the realization of display technology like paper-like reading, also known as electronic paper technology; electronic ink as a specific implementation of electronic paper technology, each of which contains positive The charged white particles and the negatively charged black particles, the black particles and the white particles are all suspended in a clear liquid. When the negative electric field is set, the white particles move toward the top of the microcapsule, and the reader can see the white particles, where the surface appears white. Similarly, the opposite electric field pulls the black particles to the top of the microcapsules, and the white particles are hidden. At this point the process reverses and the black particles appear on top of the capsule and appear black on the surface.

Electronic inks have many advantages, including legibility, flexibility, ease of manufacturing, and low power consumption. Compared with other display technologies, electronic inks have better reflectance and contrast, which is a media break that people feel comfortable reading and processing. Electronic inks, unlike other display processes, can hold images for weeks without any additional power.

In the process of implementing the present invention, the inventors have found that at least the following problems exist in the prior art: Since the electronic ink itself does not emit light and does not support backlighting, it can only rely on reflected light for reading, and cannot read in places where there is insufficient light. , affecting the user experience. Summary of the invention

An object of the embodiments of the present invention is to provide a brightness adjustment method and apparatus in a paper-like display device, and a paper-like display system, which improve the user's experience in reading electronic books.

Embodiments of the present invention provide a method for adjusting brightness in a paper-like display device, including:

Detecting the brightness of the ambient light where the paper-like display device is located, and obtaining an ambient light intensity value;

Comparing the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result; The light intensity value of the illumination system of the paper-like display device is adjusted based on the comparison result. An embodiment of the invention provides a brightness adjustment device, including:

a detecting module, configured to detect brightness of ambient light where the paper-like display device is located, and obtain an ambient light intensity value;

a first comparison module, configured to compare the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result;

And a first adjustment module, configured to adjust a light intensity value of the illumination system of the paper-like display device according to the comparison result.

Embodiments of the present invention provide a paper-like display system, including: a paper-like display device, and a brightness adjustment device according to the above technical solution; the brightness adjustment device is configured to adjust an illumination system of the paper-like display device.

The brightness adjustment method and device and the paper-like display system in the paper-like display device provided by the embodiment of the present invention compare the ambient light intensity value with a preset adjustment threshold parameter, so that the illumination system of the paper-like display device is based on the paper-like display device The environment in which it is located adjusts the ambient light intensity value, which improves the user's experience of reading the paper-like display device, and effectively reduces the power consumption of the lighting system of the paper-like display device. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic flow chart of an embodiment of a brightness adjustment method in a paper-based display device of the present invention; FIG. 2 is a schematic flow chart of still another embodiment of a brightness adjustment method in a paper-based display device of the present invention; FIG. 4 is a schematic structural diagram of another embodiment of a brightness adjusting device according to the present invention; FIG.

FIG. 5 is a schematic structural view of still another embodiment of a brightness adjusting device according to the present invention; FIG.

Figure 6 is a schematic structural view of an embodiment of the paper-like display system of the present invention;

7 is a schematic structural view of a paper-like display system in the embodiment shown in FIG. 6;

Figure 8 is a schematic view showing still another structure of the paper-like display system in the embodiment shown in Figure 6; 9 is another schematic structural view of the paper-like display system in the embodiment shown in FIG. 6; FIG. 10 is a schematic structural view of the stylus pen in the embodiment shown in FIG.

Figure 11 is a block diagram showing still another structure of the paper-like display system in the embodiment shown in Figure 6. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without the creative work are all within the scope of the present invention. 1 is a schematic flow chart of an embodiment of a brightness adjustment method in a paper-based display device of the present invention. As shown in FIG. 1, the embodiment includes the following steps: Step 101: Detecting brightness of ambient light where the paper-like display device is located, and obtaining an environment The light intensity value is obtained; Step 102: comparing the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result;

Step 103: Adjust the light intensity value of the illumination system of the paper-like display device according to the comparison result.

The brightness adjustment method in the paper-like display device provided by the embodiment of the present invention compares the ambient light intensity value with a preset adjustment threshold parameter, so that the illumination system of the paper-like display device adjusts the ambient light intensity according to the environment in which the paper-like display device is located. The value is adjusted to improve the user's experience in reading the paper-like display device, and effectively reduce the power consumption of the illumination system of the paper-like display device. 2 is a schematic flow chart of still another embodiment of the brightness adjustment method in the paper-based display device of the present invention. As shown in FIG. 2, the embodiment includes the following steps: Step 201: Detecting brightness of ambient light where the paper-like display device is located, and obtaining The ambient light intensity value; wherein, the ambient light sensor disposed in the illumination system of the paper-like display device detects the brightness of the ambient light where the paper-like display device is located, and detects the ambient light intensity around the paper-like display device; The ambient light sensor may specifically be a photodiode or a phototransistor; Step 202: Compare the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result. fruit;

The adjustment threshold parameter may be set according to the actual illumination environment in which the paper display system is located, or may be set according to the illumination brightness that the user is accustomed to, for example: The preset adjustment threshold parameter may be set to two adjustment threshold parameters: An adjustment threshold parameter and a second adjustment threshold parameter, wherein the first adjustment threshold parameter is used to adjust the illumination system from low brightness to high brightness, and the second adjustment threshold parameter is used to adjust the illumination system from high brightness to low brightness Adjustment. Step 203: Adjust, according to the comparison result, a light intensity value of the illumination system of the paper-like display device;

Specifically, corresponding to step 202 above, if the comparison result is that the ambient light intensity value is less than the first adjustment threshold parameter, the ambient light intensity value of the paper-like display device is adjusted to be greater than or equal to the first by the illumination system of the paper-like display device. Adjusting the threshold parameter; specifically, when the ambient light intensity value is less than the first adjustment threshold parameter, indicating that the ambient light of the paper-based display device is dark at this time, and at this time, the ambient light intensity of the paper-like display device is used by the illumination system The value is adjusted to be greater than or equal to the first adjustment threshold parameter. If the comparison result is that the ambient light intensity value is greater than or equal to the second adjustment threshold parameter, it indicates that the ambient light of the paper-like display device is brighter, and at this time, the illumination system is passed. Adjusting the ambient light intensity value of the paper-like display device to be less than or equal to the second adjustment threshold parameter, and dimming the ambient light intensity value of the paper-like display device through the illumination system, thereby effectively reducing the illumination system of the paper-like display device The power consumption is consumed; Step 204: Acquire a text area currently displayed by the paper-like display device. Step 205: Control an illumination system of the paper display device to cause the illumination system to illuminate the currently displayed text region. In step 204 and step 205, in order to save power consumption of the illumination system of the paper-like display device, by controlling the illumination position of the illumination system in the paper-like display device, the text area currently being displayed is illuminated, and currently The area that does not need to be displayed is not illuminated; for example: the upper half of the display screen of the paper-like display device can be used as the text area currently read by the user, and the text content read by the user enters the display area in a scrolling manner. Since the display area is illuminated, the user can read in the display area; since the lower half area is an area that does not need to be displayed and is not illuminated, the power consumption of the illumination system of the paper-like display device is effectively reduced. . The brightness adjustment method in the paper-like display device provided by the embodiment of the invention passes the ambient light intensity value and The preset adjustment threshold parameters are compared, so that the illumination system of the paper-like display device is adjusted according to the ambient light intensity value of the paper-like display device, thereby improving the user experience of reading the paper-based display device, and effectively reducing the paper-like display device The power consumption of the lighting system.

In addition, on the basis of the embodiment shown in FIG. 1 and FIG. 2, the flow of the illumination system for opening the paper-like display device may be further included, and FIG. 3 is a schematic flow chart of another embodiment of the brightness adjustment method in the paper-based display device of the present invention. As shown in FIG. 3, the embodiment includes the following steps: Step 301: Detecting brightness of ambient light where the paper-like display device is located, and obtaining an ambient light intensity value; Step 302, using the ambient light intensity value and the preset for determining Whether it is necessary to open the opening threshold parameters of the lighting system of the paper display device; wherein, the opening threshold parameter can be set according to the actual lighting environment, or can be set according to the brightness of the user's own lighting; Step 303, if the environment When the light intensity value is less than or equal to the opening threshold parameter, the illumination system of the paper display device is turned on. When the ambient light intensity value is less than or equal to a preset closing threshold parameter for determining whether the lighting system of the paper display device needs to be turned off, it indicates that the ambient light is dark at this time or the user needs to turn on the class under the ambient light intensity. The illumination system of the paper display device automatically turns on the illumination system of the paper display device by turning on the illumination system, thereby improving the user's experience of reading the paper-like display device. After the lighting system is turned on, the flow of the embodiment shown in FIG. 1 or FIG. 2 can also be performed according to the situation in which the user actually reads the paper-like display device. Step 304: If the ambient light intensity value is greater than or equal to the closing threshold parameter of the lighting system for determining whether the paper display device needs to be turned off, the lighting system of the paper display device is turned off. The closing threshold parameter may be set according to the actual lighting environment, or may be set according to the lighting brightness that the user is accustomed to; when the ambient light intensity value is greater than the closing threshold of the lighting system for determining whether the paper display device needs to be turned off. When the parameter is displayed, it indicates that the ambient light is brighter or the user can accept the brightness of the illumination. By dimming or turning off the illumination of the illumination system, the power consumption of the illumination system of the paper-like display device can be effectively reduced. In the above embodiment, by comparing the ambient light intensity value with the preset opening threshold parameter, the lighting system that automatically opens the paper-based display device according to the environment in which the paper-based display device is located is realized. The ambient light intensity value is compared with the preset closing threshold parameter, thereby realizing the automatic closing of the lighting system of the paper display device according to the environment of the paper-like display device, thereby greatly improving the user's experience of reading the paper-like display device, effectively Reducing the power consumption of the lighting system of the paper-like display device.

4 is a schematic structural diagram of an embodiment of a brightness adjusting device according to the present invention. As shown in FIG. 4, the embodiment includes: a detecting module 41, a first comparing module 42, and a first adjusting module 43;

The detecting module 41 detects the brightness of the ambient light where the paper-like display device is located, and obtains the ambient light intensity value. The first comparison module 42 compares the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result. An adjustment module 43 adjusts the light intensity value of the illumination system of the paper-like display device based on the comparison result.

The brightness adjustment device provided by the embodiment of the present invention compares the ambient light intensity value with the preset adjustment threshold parameter by the first comparison module 42 , so that the first adjustment module 43 performs the light intensity value of the illumination system of the paper-like display device. The adjustment improves the user's experience of reading the paper-like display device, and effectively reduces the power consumption of the illumination system of the paper-like display device.

FIG. 5 is a schematic structural diagram of still another embodiment of the brightness adjusting device of the present invention. As shown in FIG. 5, the brightness adjusting device 50 of the embodiment includes: a detecting module 51, a first comparing module 52, a first adjusting module 53, and obtaining Module 54, control module 55, second comparison module 56, opening module 57, closing module 58;

The detecting module 51 detects the brightness of the ambient light where the paper-like display device is located, and obtains the ambient light intensity value. The first comparison module 52 compares the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result. An adjustment module 53 adjusts a light intensity value of the illumination system of the paper-like display device according to the comparison result; the second comparison module 56 uses the ambient light intensity value and a preset for determining whether the need to turn on the The opening threshold parameter of the illumination system of the paper-like display device is compared; if the ambient light intensity value is less than or equal to the opening threshold parameter, the opening module 57 turns on the illumination system of the paper-like display device; and the second comparison module 56 And a method for comparing the ambient light intensity value with a preset closing threshold parameter of the illumination system for determining whether the paper-based display device needs to be turned off, if the ambient light intensity value is greater than or equal to a preset In order to determine whether it is necessary to turn off the closing threshold parameter of the illumination system of the paper-like display device, the closing module 58 turns off the paper-like The illumination system of the display device; 4 Mo eligible ear block 54 acquires the character area paper-like display device currently displayed; and a control module 55 controls the paper-like display device of the lighting system of the illumination system Illuminating the currently displayed text area.

Further, the first adjustment module 53 may further include: a first adjustment unit 531 and a second adjustment unit 532; wherein, if the ambient light intensity value is less than the first adjustment threshold parameter, the first adjustment unit 531 passes through The illumination system of the paper-like display device adjusts an ambient light intensity value of the paper-like display device to be less than or equal to the first adjustment threshold parameter; if the ambient light intensity value is greater than or equal to the second adjustment threshold parameter Then, the second adjusting unit 532 adjusts the ambient light intensity value of the paper-like display device to less than or equal to the second adjustment threshold parameter by the illumination system of the paper-like display device. The brightness adjustment device provided by the embodiment of the present invention compares the ambient light intensity value with the preset adjustment threshold parameter by the first comparison module 52, so that the first adjustment module 53 performs the light intensity value of the illumination system of the paper-like display device. The adjustment improves the user's experience of reading the paper-like display device, and effectively reduces the power consumption of the illumination system of the paper-like display device; the second comparison module 56 compares the ambient light intensity value with a preset opening threshold parameter to enable the opening The module 57 realizes that the illumination system of the paper-based display device is automatically turned on according to the ambient light intensity value of the paper-like display device; the ambient light intensity value is compared with the preset closed threshold parameter, so that the shutdown module 58 realizes display according to the paper type. The ambient light intensity value of the device automatically turns off the illumination system of the paper-like display device, thereby greatly improving the user's experience of reading the paper-like display device, and effectively reducing the power consumption of the illumination system of the paper-like display device.

6 is a schematic structural view of an embodiment of a paper-like display system of the present invention. As shown in FIG. 6, the embodiment includes: a paper-like display device 61 and a brightness adjusting device 62. wherein the brightness adjusting device 62 detects the paper-like display device 61. The brightness of the ambient light is obtained, the ambient light intensity value is obtained, and the ambient light intensity value is compared with a preset adjustment threshold parameter to obtain a comparison result, and the light intensity of the illumination system of the paper-like display device 61 is obtained according to the comparison result. The value is adjusted; the brightness adjusting device 62 may specifically be the brightness adjusting device described in FIG. 4 or FIG. 5. The paper-based display system provided by the embodiment of the present invention compares the ambient light intensity value with a preset adjustment threshold parameter by the brightness adjusting device 62, and adjusts the light intensity value of the illumination system of the paper-like display device according to the comparison result, and improves The user's experience of reading the paper-like display device 61 effectively reduces the power consumption of the illumination system of the paper-like display device 61. In order to more clearly understand the embodiment of the present invention, the paper-like display system in the embodiment shown in FIG. 6 is as follows. The structure of the system is described in detail. FIG. 7 is a schematic structural diagram of a paper-like display system in the embodiment shown in FIG. 6. As shown in FIG. 7, the paper-like display system in this embodiment includes: a body 72, and the body 72 is provided with a hidden illumination. a recess 75 of the bracket 73 of the system; the end of the bracket 73 is provided with an illumination lamp 74 for adjusting the ambient light intensity value; further, the body 72 of the paper-like display device is further provided with an electronic ink screen 71 and a button 76; The illumination lamp in the illumination system is specifically illustrated as a Light-Emitting Diode (LED). Wherein, the bracket 73 has a hollow structure, and the hollow structure can hide the line of the LED 74; when the paper-like display device is in a light-filled environment, the user does not need to use the LED 74 for illumination, and the bracket 73 can be hidden in the recess 75 at this time. Since the bracket 73 does not occupy the external space, the space occupied by the paper-like display device is reduced, which is convenient for the user to carry; when the paper-like display device is in a low-light environment, the bracket 73 can be taken out from the recess 75 and stretched. And the LED 74 is turned on according to the method of the embodiment shown in FIG. 3, and an illumination source is formed to illuminate the electronic ink screen 71. In addition, the manner of removing the bracket 73 can be manually performed by the user, or the bracket 76 can be used to make the bracket. 73 is automatically extended from the recess 75; the bracket 73 is extended such that the position of the LED 74 is just above the electronic ink screen 71. The folding bracket shown in FIG. 7 is only an exemplary illustration, and the bracket 73 may also be a pull-out bracket.

In the structure of the paper-like display system in this embodiment, since the LED 74 is disposed above the electronic ink screen 71, the illumination of the electronic ink screen 71 is more evenly hooked, and the experience of reading the paper book under the light is achieved, and the reading effect is better. The structure is simple, the implementation cost is low, and the contrast and sharpness of the electronic ink screen 71 itself are not affected; the brightness adjusting device automatically adjusts the light intensity according to the ambient light, improves the experience of the reading paper display device, and improves the paper type. The illumination efficiency of the display device.

8 is a schematic structural view of a paper-like display system in the embodiment shown in FIG. 6. As shown in FIG. 8, the paper-like display system in this embodiment includes: a body 82, and a flip cover movably connected to the body 82. 84; wherein the flip cover 84 is provided with an illumination lamp for adjusting the ambient light intensity value. In addition, the body 82 of the paper-like display device is further provided with an electronic ink screen 81 and a button 83 disposed on the body 82. The illumination lamp in the illumination system is specifically exemplified as an LED. Wherein, a plurality of LEDs 85 are disposed on the flip cover 84. FIG. 8 is merely exemplified by providing four LEDs in the illumination system; by providing the LEDs 85 on the flip cover 84, the flip cover 84 and the electronic ink screen 81 are at an angle to make the LED 85 The electronic ink screen 81 is illuminated. When the paper-like display device is in a low-light environment, the LED 85 can be turned on according to the method of the embodiment shown in FIG. 3, and an illumination source is formed to illuminate the electronic ink screen 81, or according to FIG. 1 or FIG. 2 above. The method flow shown adjusts the brightness of the electronic ink screen 81; in addition, the flip cover 84 can be in the form of a left and right flip cover as shown in FIG. 8, and can also be in the form of a top and bottom flip. FIG. 8 is merely an exemplary illustration and does not constitute the present invention. Limitations of the embodiments. In the paper-like display system in this embodiment, since the plurality of LEDs 85 in the illumination system are uniformly disposed on the flip cover 84, the illumination of the electronic ink screen 81 is more evenly hooked, and the structural design is more compact. Alternatively, in the embodiment shown in FIG. 8 , a planar distributed organic light-emitting diode (OLED) may be used instead of the LED for illumination; wherein the planar distributed OLED lamp is composed of a multilayer film. The composition of the device, that is, a foil, a film, a rigid or flexible plate as a substrate, composed of an electrode layer, an active material layer, a protective barrier layer, etc., requires at least one electrode to be transparent to light. Different from the point source, the planar distributed OLED lamp is a distributed (or distributed) planar solid-state light source, which has the advantages of light weight, ultra-thin, softness, brightness, less shadow, etc., and low energy consumption, use and Safe to maintain, high energy efficiency, long life, no filament breakage and durability. By overlaying the planar distributed OLED lamp on the surface of the flip of the paper-like display system, a planar light source is formed to illuminate the display screen of the electronic ink, and the uniformity of the brightness of the planar light source is better than that of the LED light of the point source. Further, the LED 85 can be turned on according to the method of the embodiment shown in FIG. 3, and an illumination source is formed to illuminate the electronic ink screen 81. The electronic ink screen 81 can also be processed according to the method shown in FIG. 1 or FIG. The brightness is adjusted, and the brightness adjustment device automatically adjusts the light intensity according to the ambient light, thereby improving the experience of the reading type paper display device and improving the illumination efficiency of the paper-like display device. 9 is another schematic structural view of the paper-like display system in the embodiment shown in FIG. 6. FIG. 10 is a schematic structural view of the stylus in the embodiment shown in FIG. 9, as shown in FIG. 9 and FIG. The paper-like display system includes: a stylus 95; the stylus 95 is mounted in the body 92; in addition, the body 82 of the paper-like display device is further provided with an electronic ink screen 91 and a button 93 disposed on the body 92. , For example, by providing a slot in the body 92 for mounting the stylus 95, the end of the stylus 95 is provided with an illumination lamp for adjusting the ambient light intensity value. In this embodiment, the illumination lamp is specifically illustrated as an LED 96. The end of the stylus pen 95 is provided with an LED 96, and the LED 96 is turned on by the switch 97 or in an automatic manner, and can pass the method flow of the embodiment shown in FIG. 1 or FIG. 2 above. Adjusting the brightness, the LED 96 can also be turned on by the method of the embodiment shown in FIG. 3; the stylus 95 can be installed in the stylus slot in the body 92, and can be used on the stylus 95 when the LED 96 needs to be activated for illumination. LED96 acts as an illumination source. The brightness of the LEDs installed in the stylus can be adjusted automatically according to the ambient lighting, or manually. When the brightness is automatically adjusted, the brightness adjustment device in the embodiment shown in FIG. 4 or FIG. 5 may be disposed on the stylus 95, and the brightness adjustment may be performed by the method flow of the embodiment shown in FIG. 1 or FIG. It can be opened by the method flow of the embodiment shown in FIG. 3 above.

11 is a schematic structural view of a paper-like display system in the embodiment shown in FIG. 6. As shown in FIG. 10, the paper-like display system in this embodiment includes: a body 12, and an electronic device disposed on the body 12. The ink screen 11; the frame of the electronic ink screen 11 is provided with a planar organic electroluminescent diode; in addition, the body 12 of the paper-like display system is further provided with a button 13. Wherein, a plane OLED 14 is disposed on the frame of the electronic ink screen 11 , and a planar light source OLED 14 is disposed at a frame around the electronic ink screen 11 to form a uniform light source; further, in order to save power consumption of the illumination system of the paper-like display device, The paper-like display system can control the light-emitting position of the planar OLED 14, so that the area that needs to be displayed is illuminated (the area that needs to be displayed can be, for example, the area that the user is currently reading), and the area that is not currently required to be displayed is not illuminated; For example: the upper half of the electronic ink screen 11 can be used as the current area to be displayed, and the content read by the user is displayed in the upper half area in a rolling manner, and the corresponding plane of the area

The OLED 14 is illuminated, so that the user can read in the upper half area; in the lower half of the electronic ink screen 11, since it is not used as the display area, the planar OLED 14 corresponding to the lower half area is not illuminated, thereby effectively Reducing the power consumption of the lighting system of the paper-like display device.

Further, in the embodiment of the present invention, the ambient light sensor can detect the brightness of the ambient light where the paper-like display system is located, and convert the brightness of the ambient light into electrical energy; specifically, the ambient light sensor can use a photodiode or a phototransistor; a glass embedded in the tube of the photodiode The window of the glass is used to facilitate the light incident. In addition, in order to increase the light receiving area, the area of the PN junction is made larger, and the photodiode operates in a reverse biased state and is connected in series with the load resistor. When there is no light, the photodiode has the same reverse current as the ordinary diode (<μΑ), called the dark current of the photodiode; when there is light, the carrier is excited to generate electron-hole, called photoelectric Carrier. Under the action of an external electric field, the photocarriers are electrically conductive, forming a reverse current much larger than the dark current, which is called photocurrent. The magnitude of the photocurrent is proportional to the intensity of the illumination, so that an electrical signal that varies with changes in illumination intensity is obtained over the load resistance. In addition to the function of the photodiode to convert the optical signal into an electrical signal, the phototransistor also has the function of amplifying the electrical signal, and the phototransistor has higher sensitivity than the photodiode. A suitable ambient light sensor can be selected according to actual needs. The paper-like display device described in the embodiment of the present invention may specifically be an electronic book that realizes electronic reading by using electronic ink (E-Ink) technology, and may also be a handheld reader that realizes electronic reading by using liquid crystal display technology. A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device, the module and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again. It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing embodiments may be performed by hardware related to program instructions. The foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk. It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced by the same. However, the modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A method for adjusting brightness in a paper-like display device, comprising:

Comparing the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result; and adjusting a light intensity value of the illumination system of the paper-like display device according to the comparison result.

The method according to claim 1, wherein the preset adjustment threshold parameter is a first adjustment threshold parameter and a second adjustment threshold parameter, and the paper display device is used according to the comparison result The adjustment of the light intensity values of the illumination system includes:

If the ambient light intensity value is less than the first adjustment threshold parameter, adjusting an ambient light intensity value of the paper-based display device to be greater than or equal to the first adjustment threshold by an illumination system of the paper-like display device Parameter

And if the ambient light intensity value is greater than or equal to the second adjustment threshold parameter, adjusting an ambient light intensity value of the paper-like display device to be less than or equal to the second adjustment by an illumination system of the paper-like display device Threshold parameters.

3. The method according to claim 1, further comprising:

The illumination system of the paper-like display device is turned off if the ambient light intensity value is greater than or equal to a predetermined shutdown threshold parameter for determining whether the illumination system of the paper-based display device needs to be turned off.

4. The method according to claim 1, further comprising:

Comparing the ambient light intensity value with a preset opening threshold parameter for determining whether the illumination system of the paper-like display device needs to be turned on;

If the ambient light intensity value is less than or equal to the opening threshold parameter, the illumination system of the paper-like display device is turned on.

The method according to any one of claims 1 to 4, further comprising:

Obtaining a text area currently displayed by the paper-like display device;

An illumination system that controls the paper-like display device causes the illumination system to illuminate the currently displayed text area.

6. A brightness adjusting device, comprising:

The detecting module is configured to detect the brightness of the ambient light where the paper-like display device is located, and obtain the ambient light intensity Value

The apparatus according to claim 6, wherein the preset adjustment threshold parameter is a first adjustment threshold parameter and a second adjustment threshold parameter, and the first adjustment module comprises:

a first adjusting unit, configured to adjust an ambient light intensity value of the paper-like display device to less than or equal to an illumination system of the paper-like display device if the ambient light intensity value is less than the first adjustment threshold parameter The first adjustment threshold parameter;

a second adjusting unit, configured to adjust an ambient light intensity value of the paper-like display device to be smaller than an illumination system of the paper-like display device if the ambient light intensity value is greater than or equal to the second adjustment threshold parameter Or equal to the second adjustment threshold parameter.

8. The device according to claim 6, further comprising:

a second comparison module, configured to compare the ambient light intensity value with a preset opening threshold parameter of the illumination system for determining whether the paper-based display device needs to be turned on;

And an opening module, configured to turn on the illumination system of the paper-like display device if the ambient light intensity value is less than or equal to the opening threshold parameter.

9. The device according to claim 6, further comprising:

And a closing module, configured to turn off the illumination system of the paper-like display device if the ambient light intensity value is greater than or equal to a preset closing threshold parameter for determining whether the illumination system of the paper-like display device needs to be turned off.

The device according to any one of claims 6 to 9, further comprising: an obtaining module, configured to acquire a text area currently displayed by the paper-like display device;

And a control module for controlling an illumination system of the paper-like display device to cause the illumination system to illuminate the currently displayed text area.

A paper-like display system, comprising: a paper-like display device, and the brightness adjusting device according to any one of claims 6 to 10;

The brightness adjusting device detects brightness of ambient light where the paper-like display device is located, obtains an ambient light intensity value, and compares the ambient light intensity value with a preset adjustment threshold parameter to obtain a comparison result. And adjusting the light intensity value of the illumination system of the paper-like display device according to the comparison result.

12. The system according to claim 11, wherein the paper-like display device comprises: a body, the body is provided with a recess for concealing a bracket of the illumination system; and the end of the bracket is set There are lights for adjusting the ambient light intensity value.

13. The system according to claim 11, wherein the paper-like display device comprises: a body, a flip cover movably connected to the body; and the flip cover is provided with illumination for adjusting an ambient light intensity value light.

14. The system according to claim 11, wherein the paper-like display device comprises: a stylus, the end of the stylus being provided with an illumination lamp for adjusting an ambient light intensity value.

The system according to claim 11, wherein the paper-like display device comprises: a body, an electronic ink screen disposed on the body; and a frame of the electronic ink screen is provided with a planar organic battery Light-emitting diodes.