WO2013082892A1

WO2013082892A1 - Text display method and device

Info

Publication number: WO2013082892A1
Application number: PCT/CN2012/072008
Authority: WO
Inventors: 彭文斌; 马翠霞; 余剑飞
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-12-05
Filing date: 2012-03-06
Publication date: 2013-06-13
Also published as: CN103137103A; CN103137103B

Abstract

A text display method and device. The method comprises: obtaining the background color contrast of an area for displaying a text in an electronic terminal (S102); calculating the text color contrast matching the background color contrast (S104); displaying the text by using the text color contrast (S106). The present invention solves the problem that the text displayed cannot be well discerned or is not sufficiently visible if the background color is glaring and colorful, thereby making the displayed text in clear contrast to the background color.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a character display method and apparatus. BACKGROUND OF THE INVENTION With the continuous development of liquid crystal display technology of electronic terminals, colors that can be displayed through liquid crystal displays are becoming more and more abundant. More and more people like to use the colorful theme background color as the theme desktop display of the electronic terminal, and get a new visual enjoyment. For mobile terminals, there is generally a clock function that displays time on the desktop. In the case of a colorful background color as a desktop theme, the font display requirements of the clock are also getting higher and higher. It is necessary for users to enjoy the colorful background image, but also to display the time and other information, especially when the user can select some multimedia devices or processed photos, pictures, etc. as the theme background, the fixed font The display method brings a variety of problems. For example, the contrast between font color and background color is not clear enough, which makes it difficult for users to distinguish the font of the clock or the font is not conspicuous. In the related art, the following method is generally used to highlight the display of the text, that is, special processing is performed on the area of the theme background picture selected by the user to display the clock, for example, highlighting or darkening the area, thereby making the font Can be displayed more clearly. However, this practice is undoubtedly a kind of damage to the user's background image display, affecting the user's appreciation of the entire picture on the desktop. In view of the problem that the text displayed under the colorful background color in the related art is difficult to distinguish or is not conspicuous, an effective solution has not been proposed yet. SUMMARY OF THE INVENTION The present invention provides a text display method and apparatus for solving the above problems, in view of the problem that characters displayed under a colorful background color are difficult to distinguish or are not conspicuous. According to an aspect of the present invention, a text display method is provided, comprising: acquiring a background color contrast of an area for displaying characters in an electronic terminal; calculating a text color contrast matching the background color contrast; and displaying the text using the text color contrast. Preferably, obtaining the background color contrast of the area for displaying the text in the electronic terminal comprises: determining whether the background color of the area for displaying the text changes during the displaying of the text; if the background color changes during the displaying of the text, Obtaining the contrast of the background color from the display buffer of the electronic terminal; if the background color does not change during the display of the text, the contrast of the background color is obtained from the display buffer of the electronic terminal last time. Preferably, determining whether the background color of the area for displaying the text changes during the display of the text comprises: detecting whether the user performs an operation of setting the background; if yes, determining the background color of the area for displaying the text is displaying the text process There has been a change. Preferably, obtaining the background color contrast of the area for displaying the text in the electronic terminal comprises: calculating the background color contrast using the two rectangular superposition algorithm, wherein the two rectangular superposition algorithms comprise: obtaining two rectangles in the area for displaying the text And calculate the color contrast of the two rectangles separately; the color contrast of the two rectangles is superimposed by the Fourier transform to obtain the background color contrast. Preferably, calculating the text color contrast matching the background color contrast comprises: inverting the background color contrast by a predetermined value to obtain a text color contrast. Preferably, the background color contrast is inversed by a predetermined value to obtain a text color contrast comprising: calculating the text color contrast as follows: The text color contrast is equal to the difference between the predetermined value and the background color contrast. According to another aspect of the present invention, a text display apparatus is provided, comprising: an acquisition module configured to acquire a background color contrast of an area for displaying text in an electronic terminal; and a calculation module configured to calculate a contrast matching with a background color Text color contrast; display module, set to display text using text color contrast. Preferably, the device further includes: a determining module, configured to determine whether a background color of the area for displaying the text changes during the displaying of the text; the obtaining module is further configured to: when the determining result of the determining module is yes, Obtaining the contrast of the background color in the display buffer of the electronic terminal; and when the judgment result of the judging module is no, the contrast of the background color is obtained from the display buffer of the electronic terminal last time. Preferably, the obtaining module includes: a superimposition calculating unit configured to calculate a background color contrast using two rectangular superposition algorithms, wherein the two rectangular superposition algorithms comprise: obtaining two rectangles in an area for displaying characters, and respectively calculating two The color contrast of the rectangles; the color contrast of the two rectangles is superimposed by the Fourier transform to obtain the background color contrast. Preferably, the calculating module comprises: a negating unit configured to invert the background color contrast by a predetermined value to obtain a text color contrast. According to the present invention, the background color contrast of the area in which the text is displayed is acquired, and then the text color contrast matching the background color contrast is calculated and the text is displayed in the text color contrast, thereby solving the text displayed under the colorful background color. It is difficult to distinguish or not enough eye-catching, which makes the contrast between the displayed font and the background clearer and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a flow chart of a character display method according to an embodiment of the present invention; FIG. 2 is a block diagram showing a structure of a character display device according to an embodiment of the present invention; FIG. 3 is a first preferred text according to an embodiment of the present invention. FIG. 4 is a block diagram showing the structure of a second preferred character display device according to an embodiment of the present invention; FIG. 5 is a block diagram showing the structure of a third preferred character display device according to an embodiment of the present invention; A flowchart of a core algorithm of a font display method of a preferred embodiment; FIG. 7 is a schematic diagram of an LCD display content according to a preferred embodiment of the present invention; FIG. 8 is a schematic diagram of an LCD display device according to a preferred embodiment of the present invention; A schematic representation of each display area of a preferred embodiment of the invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Considering the problem that the text displayed under the colorful background color is difficult to distinguish or not enough, the present embodiment provides a text display method to make the font and background without affecting the overall aesthetics of the background image. The color contrast is clearer. 1 is a flowchart of a text display method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: Step S102: Acquire a background color contrast of an area for displaying characters in an electronic terminal; Step S104, calculating a text color contrast matching the background color contrast; Step S106, displaying the text using the text color contrast. In this embodiment, by using the above method, the background color contrast of the area where the text is displayed is obtained, and then the text color contrast matching the background color contrast is calculated and the text is displayed with the text color contrast, without changing the background image. Matching the displayed text with the background color, thus solving the problem that the text displayed under the colorful background color is difficult to distinguish or not conspicuous, thereby making the contrast between the displayed font and the background clearer, and improving the user experience. degree. In view of the fact that the background color of the area for displaying characters changes in the process of displaying characters according to the method of the present embodiment, the final displayed text is not effective. Therefore, in order to enable the method of the embodiment to be applied to the case where the background color changes during the display of the character, the background color contrast of the area for displaying the text in the acquisition electronic terminal may include: determining the area for displaying the text. Whether the background color changes during the display of the text; if the background color changes during the display of the text, the contrast of the background color is obtained from the display buffer of the electronic terminal; if the background color does not change during the display of the text, then the color is used The contrast of the background color was obtained from the display cache of the electronic terminal last time. In this way, the color contrast of the displayed font and the background can be made clearer when the background color of the area in which the text is displayed changes, and the scope of application of the scheme is expanded. There are many ways to determine whether the background color of the area for displaying the text changes during the display of the text. In this embodiment, a relatively simple manner of determining is provided: detecting whether the user performs the setting of the background; if yes, Then, it is determined that the background color of the area for displaying the text changes during the display of the text. This method is accurate and simple. Generally, the background color of the area for displaying the text can be directly calculated to obtain the background color contrast of the area, but in order to make the background color contrast of the area for displaying the text in the obtained electronic terminal more accurate, The background color contrast is calculated using two rectangular overlay algorithms. The two rectangular superposition algorithms may include: obtaining two rectangles in an area for displaying characters, and respectively calculating color contrasts of the two rectangles; and superimposing the color contrast of the two rectangles by Fourier transform to obtain a background Color contrast. The positions of the two rectangles only need to satisfy that the two rectangles can intersect and intersect the area as the display area. When the two rectangles are selected, the size of the two rectangles can be twice the size of the displayed text area. The background color contrast obtained in this way is more accurate, and the text color contrast calculated by applying the background color contrast is better for displaying the text. There are many ways to calculate the color contrast of a text that matches the contrast of the background color, for example, using the negative of the background color contrast as the text color contrast, or adding the background color contrast to the specified value as the text. Color contrast, in this embodiment, a more effective way of calculating the text color contrast matching the background color contrast is provided: the background color contrast is reversed according to a predetermined value to obtain a text color contrast. Wherein, the background color contrast is reversed according to a predetermined value, and the text color contrast is obtained as follows: The text color contrast is calculated as follows: The text color contrast is equal to the difference between the predetermined value and the background color contrast, for example, the maximum contrast is set to 65535, The text color contrast can be subtracted (ie, inverted) from the resulting background color contrast value in decimal, ie text color contrast = 65535 - background color contrast; can also be in other hexadecimal, eg sixteen In hexadecimal, the maximum value is converted to hexadecimal and subtracted (ie, inverted) from the background color contrast value converted to hexadecimal. Corresponding to the above method, the present embodiment further provides a text display device. FIG. 2 is a structural block diagram of a text display device according to an embodiment of the present invention. As shown in FIG. 2, the device includes: an acquisition module 22 and a calculation module 24 And a display module 26. The obtaining module 22 is configured to acquire a background color contrast of an area for displaying characters in the electronic terminal. The calculating module 24 is coupled to the obtaining module 22 and configured to calculate a background color contrast matched by the acquiring module 22. Text color contrast; display module 26, coupled to computing module 24, is arranged to display text using the text color contrast calculated by computing module 24 described above. In this embodiment, by the above device, the background color contrast of the area in which the text is displayed is obtained by the acquisition module 22, the calculation module 24 calculates the text color contrast matching the background color contrast, and the display module 26 displays the text in the text color contrast manner. Under the premise of not changing the background image, the displayed text is matched with the background color, thereby solving the problem that the text displayed under the colorful background color is difficult to distinguish or not conspicuous, and thus the displayed font and background color The contrast is clearer and the user experience is improved. 3 is a structural block diagram of a first preferred character display device according to an embodiment of the present invention. As shown in FIG. 3, the device further includes: a determining module 32 coupled to the acquiring module 22 and configured to determine an area for displaying characters. Whether the background color changes during the display of the text; the obtaining module 22 is further configured to: obtain the contrast of the background color from the display buffer of the electronic terminal when the determination result of the determining module 32 is YES; and the judgment result of the determining module 32 If no, the contrast of the background color is obtained from the display buffer of the electronic terminal last time. 4 is a structural block diagram of a second preferred character display device according to an embodiment of the present invention. As shown in FIG. 4, the obtaining module 22 includes: a superimposition calculation unit 222 configured to calculate a background color contrast using two rectangular superposition algorithms, wherein The two rectangular superposition algorithms may include: obtaining two rectangles in an area for displaying characters, and respectively calculating color contrasts of the two rectangles; and superimposing the color contrast of the two rectangles by Fourier transform to obtain a background color Contrast. FIG. 5 is a structural block diagram of a third preferred character display device according to an embodiment of the present invention. As shown in FIG. 5, the calculation module 24 includes: a reversing unit 242 configured to invert a background color contrast according to a predetermined value to obtain a text. Color contrast. The following description is made in conjunction with a preferred embodiment that incorporates the above-described embodiments and preferred embodiments. In the preferred embodiment, a method for automatic background color extraction and font display is provided. The method can be applied to any electronic terminal having a display, for example, a liquid crystal display (LCD). The portable electronic terminal will be further described in detail below with reference to the accompanying drawings. 6 is a flowchart of a core algorithm of a font display method according to a preferred embodiment of the present invention. As shown in FIG. 6, the method includes the following steps: Step S601: determining whether a background color changes, and if yes, proceeding to step S602, otherwise Go to step S603. In step S602, if the background color changes, for example, the user changes the theme background of the display by setting the background, etc., the two rectangular superimposed values of the area are first obtained from the display buffer of the device, and the process proceeds to step S604. The display cache of the above device refers to outputting data to be displayed to a buffer memory area of the display device. Step S603, if the background color does not change, that is, the background color of the bottom of the text area to be displayed does not change during the process of displaying the font, then in the area where the text is to be displayed, two rectangular superposition algorithms are used, and the background is in the two The background color contrast of the sub-superimposed portion is calculated, and the flow proceeds to step S604. If the algorithm superimposes the abnormality, the process proceeds to step S607, and the flow ends. For example, the above two rectangular superposition algorithm may be: First, for the area where the text needs to be displayed, two rectangles are obtained, wherein the intersection of the two rectangles is exactly the area to be displayed; secondly, the color is calculated for the two rectangular areas respectively. Contrast; Then, by Fourier rectangle superposition, the color contrast value of the intersection of two rectangular regions is obtained. Step S604, inverting the calculated background color contrast value to obtain a corresponding contrast value (for example, the maximum value of the contrast can be defined as 65535, the interval is 0-65535, and if the obtained contrast value is 628, firstly The conversion to hexadecimal is 0x274, and each byte is inverted, and 0xFC8B is obtained, converted to decimal, which is 64651), and the process proceeds to step S605. If the abnormality is reversed, the process proceeds to step S607, and the flow ends. In step S605, when the character is displayed, the contrast value obtained by inverting step S604 is set to the text color, and the process proceeds to step S606. If the setting is abnormal, the process proceeds to step S607, and the flow ends. In step S606, the display text is refreshed, and if the refresh is abnormal, the process proceeds to step S607. In step S607, the process ends. The background color extraction and font display method provided by the preferred embodiment can automatically extract the background color and according to the extracted background color, compared with the cutting display area commonly used in the industry and the method of displaying after the local special processing of the background theme. Contrast calculates the color of the text to be displayed, which makes the color contrast between the font and the background clearer, giving the user a more beautiful visual experience. 7 is a schematic diagram of a display content of an LCD according to a preferred embodiment of the present invention. As shown in FIG. 7, an LCD or other device display area may be divided into display areas of A, B, C, D, E, etc., each of which The color contrast of the display area may be different. If you want to display the text correctly in multiple display areas such as A, B, C, D, E, etc., you need to get the color contrast of the background. 8 is a schematic diagram of an LCD display device in accordance with a preferred embodiment of the present invention. As shown in FIG. 8, the overall LCD display or display area of other display devices. 9 is a schematic diagram of each display area according to a preferred embodiment of the present invention. As shown in FIG. 9, it is shown that an area of the LCD or other display device is again divided into A, B, C, D, E, and the like. The area, δΡ, is separated into a single display area, which is then split into new multiple display areas, and gradually refined. By the superposition of rectangles, the color contrast of the obtained background will be more accurate and reliable. As can be seen from the above, the embodiment of the present invention solves the problem that the characters displayed under the colorful background color are difficult to distinguish or are not conspicuous, thereby making the contrast between the displayed font and the background clearer and improving the user experience. degree. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A text display method, comprising:

Obtaining a background color contrast of an area of the electronic terminal for displaying text;

Calculating a text color contrast that matches the background color contrast;

The text is displayed using the text color contrast.

2. The method according to claim 1, wherein acquiring a background color contrast of an area for displaying text in the electronic terminal comprises:

Determining whether the background color of the area for displaying the text changes during the display of the text; if the background color changes during the display of the text, obtaining the contrast of the background color from the display buffer of the electronic terminal;

If the background color does not change during the display of the text, the contrast of the background color is obtained from the display buffer of the electronic terminal last time.

3. The method according to claim 2, wherein determining whether the background color of the area for displaying the text changes during the display of the text comprises:

Detecting whether the user performs the operation of setting the background;

If so, it is determined that the background color of the area for displaying the text changes during the display of the text.

The method according to any one of claims 1 to 3, wherein acquiring a background color contrast of an area for displaying characters in the electronic terminal comprises:

The background color contrast is calculated using two rectangular superposition algorithms, wherein the two rectangular superposition algorithms include:

Obtaining two rectangles in the area for displaying characters, and calculating color contrasts of the two rectangles respectively;

The color contrast of the two rectangles is rectangularly superposed by Fourier transform to obtain the background color contrast. The method according to any one of claims 1 to 3, wherein calculating a text color contrast matching the background color contrast comprises:

The background color contrast is inversed by a predetermined value to obtain the text color contrast. The method according to claim 5, wherein the background color contrast is inverted according to a predetermined value, and the text color contrast is obtained by:

Calculate the text color contrast as follows:

The text color contrast is equal to the difference between the predetermined value and the background color contrast. A text display device comprising:

Obtaining a module, configured to obtain a background color contrast of an area for displaying text in the electronic terminal; a calculation module configured to calculate a text color contrast matching the background color contrast; a display module configured to display the text color contrast using the text Text. The device according to claim 7, wherein the device further comprises: a determining module configured to determine whether a background color of an area for displaying the text changes during the display of the text;

The obtaining module is further configured to: when the determination result of the determining module is YES, obtain a contrast of the background color from a display buffer of the electronic terminal; and when the determining result of the determining module is negative, The contrast of the background color is obtained from the display cache of the electronic terminal last time. The device according to claim 7 or 8, wherein the obtaining module comprises:

The superimposition calculation unit is configured to calculate the background color contrast using two rectangular superposition algorithms, wherein the two rectangular superposition algorithms include: obtaining two rectangles in the area for displaying characters, and calculating the two The color contrast of the rectangles; the color contrast of the two rectangles is rectangularly superposed by Fourier transform to obtain the background color contrast. The apparatus according to claim 7 or 8, wherein the calculation module comprises: a reversing unit configured to invert the background color contrast by a predetermined value to obtain the text color contrast.