CN100558120C - Method and device for controlling keyboard backlight - Google Patents

Abstract

The invention discloses a kind of supervisory keyboard method backlight, can only all light because of the luminous element of button correspondence or can only Close All to solve in existing keyboard back light demonstration, and cause the single problem of demonstration backlight; This method by setting in advance keyboard each button and the corresponding relation between at least one luminous element, read the display strategy backlight of the keyboard of customization then, produce the multi-way control signals of the luminous element that corresponds respectively to each button according to described display strategy backlight, utilize described multi-way control signals to control luminous element respectively then and illuminate corresponding key.The present invention also discloses a kind of keyboard and a kind of mobile phone simultaneously.

Description

Method and device for controlling keyboard backlight

technical field

The invention relates to the technical field of communication and computer, in particular to a method and device for controlling the backlight of a keyboard.

Background technique

A group of single-color LEDs are arranged under the keys of keyboards that need backlighting, especially the keyboards of mobile phones. All LEDs are controlled by the upper-level application program of the mobile phone. The user can set the activation, closure or activation time of the keyboard backlight. All LEDs are controlled synchronously, either to control all LEDs to light up, or to control all LEDs to turn off.

The LED structure of single-color backlight realized by single-color LED is shown in Figure 1 (Figure 1 is only for illustration, and the LED layout in the actual implementation is different due to the shape of the mobile phone keyboard): where positions A, B, C, D , E, F are monochrome LED lights respectively. The simultaneous light emission of these single-color LEDs illuminates the mobile phone keypad located above it, facilitating the key operation of the mobile phone user.

The control of monochromatic LED is very simple, as shown in Figure 2A, as long as the working voltage is applied between the terminals M and N of the LED, the LED luminous body will emit corresponding monochromatic light, and the voltage is withdrawn, and the LED luminous body stops emitting light . The circuit for controlling the LEDs under the buttons is shown in FIG. 2B , and all LEDs are synchronously controlled to emit light or not to emit light by applying or not applying an operating voltage between terminals X and Y of the control circuit.

Although the backlight control of the existing keyboard is simple, because all the LEDs are synchronously controlled, either all of them are lit or all of them are turned off, so the backlight display is single; moreover, the existing keyboard backlight display scheme cannot be defined by the user according to his own personality The backlight display strategy cannot meet the individual needs of users.

Contents of the invention

The present invention provides a method and device for controlling the backlight of a keyboard to solve the problem that in the existing keyboard backlight display, the illuminants corresponding to the keys can only be fully lit or all can be turned off, resulting in a single backlight display; further, Solve the problem that the user cannot define the keyboard backlight display strategy in the existing keyboard backlight display.

The invention provides the following technical solutions:

A method for controlling the backlight of a keyboard, each key of the keyboard corresponds to at least one luminous body, comprising the following steps:

The backlight display strategy of the keyboard customized by the user is saved as a configuration file, and the keyboard backlight display strategy includes one or more strategies in the display color of the illuminant of the button, the lighting duration of the illuminant, and the display order of the illuminant of the button The combination;

Read the configuration file, and generate multiple control signals corresponding to the light emitters of each button according to the backlight display strategy in the configuration file;

The multiple control signals are used to respectively control the luminous body to illuminate the key corresponding to the luminous body.

A keyboard, comprising a plurality of keys, a luminous body associated with each key and a control circuit for controlling the luminous body, and the luminous body is used to illuminate the corresponding key; wherein, the keyboard also includes a drive module, According to the user-customized backlight display strategy saved as a configuration file, multiple control signals for controlling each illuminant are generated and output to the control circuit; the control signal output terminals of the control circuit are respectively connected to the illuminants of each button The control signal input terminal of the control circuit is connected, and the multi-channel control signal output by the control circuit independently controls whether the illuminant of each key is illuminated. One or a combination of strategies in the order in which the lights are displayed.

According to the above keyboard:

The illuminant of each button has multiple input terminals for controlling different luminous colors, and each input terminal is respectively connected with the output terminal of the control circuit.

The luminous body of each key is composed of multiple independent monochromatic luminous bodies, or the luminous body of each key is composed of multiple monochromatic luminous bodies packaged.

The keyboard also includes a driving module, which generates control signals for controlling each illuminant according to the backlight display strategy, and outputs them to the control circuit.

A mobile phone, comprising a plurality of keys, a luminous body associated with each key and a control circuit for controlling the luminous body, the luminous body is used to illuminate the corresponding key; wherein, the mobile phone also includes a drive module, The drive module generates multiple control signals for controlling each illuminant according to the user-customized backlight display strategy saved as a configuration file, and outputs them to the control circuit; the control signal output terminals of the control circuit are respectively connected to each button The control signal input terminals of the illuminants are connected, and the illuminants of each key are independently controlled through the output multi-channel control signals. The keyboard backlight display strategy includes the display color of the illuminants of the keys, the luminous duration of the illuminants and the luminescence of the keys. One strategy or a combination of strategies in the display order of bodies.

All mobile phones also include:

The user interface module is used to provide a human-computer interaction interface for users to customize and query the keyboard backlight display strategy;

The setting module is used to store the keyboard backlight display strategy selected by the user through the user interface module or the personalized keyboard backlight display strategy defined by the user.

The present invention adopts the color luminous body as the backlight of the keyboard, controls the luminous body under each key and its color components through the upper layer application program to realize the diversified control of the backlight; provides the keyboard backlight custom interface, which is convenient for the user to customize the keyboard backlight Personalized display: for keyboard users, especially mobile phone users, they can conveniently set the personalized keyboard backlight according to their wishes, so as to meet the personalized needs of users.

Description of drawings

FIG. 1 is a structural schematic diagram of an existing monochrome keyboard backlight;

2A and 2B are schematic diagrams of control of monochrome LEDs;

Fig. 3A and Fig. 3B are schematic diagrams of the LED structure under the button in the present invention;

4 is a schematic diagram of a control structure for realizing backlight display in the present invention;

5 is a schematic diagram of the connection between the control circuit and the luminous body of the button in the present invention;

FIG. 6A is a schematic diagram of an interface for a user to set a personalized backlight in the present invention;

6B and 6C are flowcharts of processing for setting the backlight display strategy in the present invention.

Detailed ways

In order to overcome the shortcomings of the existing keyboard backlight synchronous control that either controls all the lighting to be turned on or to control all the lighting to be turned off, the present invention independently controls the illuminants under each key in the keyboard by the control circuit. On this basis, the user can customize the keyboard backlight display Strategy, the customized backlight display strategy is saved as a configuration file. When performing backlight display, the configuration file is read and the control signals corresponding to the illuminants of each key are respectively generated according to the configuration file, and the corresponding illuminants are respectively controlled by the control signals to make the illuminants emit light or not emit light.

Further, the illuminant adopts a luminous body capable of displaying colors, and the color can be a single color, such as red, blue, etc., or a color mixed from multiple single colors, such as a mixture of red and blue. color.

A typical illuminant is a light emitting diode (LED), which is taken as an example in this embodiment. Below mainly take the keyboard of mobile phone as example to describe the present invention in detail:

At present, there are two kinds of common colored LEDs: one can display red and green, and mix yellow with red and green; the other can display red, green and blue, mix yellow with red and green, and mix red and blue Purple, which mixes green and blue to make cyan. According to actual needs, one of the LEDs can be selected as the backlight illuminant.

The LED under each button can be composed of multiple independent single-color LEDs, as shown in Figure 3A, the LED under each button is composed of three independent single-color LEDs (not limited to three); the LED under each button It is also possible to package multiple single-color LEDs into a single LED device, as shown in FIG. 3B .

For the three single-color LEDs of different colors shown in Figure 3A and Figure 3B, if the LED operating voltage is applied between pin 1 and pin 4, the red LED illuminant will emit red light. If the voltage is withdrawn, The red LED illuminant will stop emitting red light; add LED working voltage between pin 2 and pin 4, the green LED illuminant will emit green light, if the voltage is withdrawn, the green LED illuminant will stop emitting green Light; add LED working voltage between pin 3 and pin 4, the blue LED illuminant will emit blue light, if the voltage is withdrawn, the blue LED illuminant will stop emitting blue light. In this way, through different combinations, adding the LED working voltage between pin 1, pin 2, pin 3 and pin 4 will make the corresponding LED illuminant emit corresponding monochromatic light, or pass a single The colored light is mixed into light of other colors to achieve a colorful keyboard backlight.

The structure of realizing the color keyboard backlight through multiple independent single-color LEDs is shown in Fig. 3C. There are three single-color LED lights of different colors at positions A, B, C, D, E, and F respectively. By controlling the lighting or extinguishing of three monochrome LED lamps of different colors at each position, relying on simple color synthesis, the color keyboard backlight effect can be realized. Wherein, the color selection of the single-color LED light, the combination number of the single-color LED light at each position, and the specific layout may be different due to mobile phones. In general, it is relatively good to package multiple single-color LEDs into a single LED device, and achieve a colorful luminous effect through color mixing.

Referring to Fig. 4, the control part for realizing personalized backlight display in the mobile phone includes:

The user interface module is used to provide a human-computer interaction interface for users to customize and query keyboard backlight display strategies.

The setting module is used to store the keyboard backlight display strategy selected by the user through the user interface module or the personalized keyboard backlight display strategy defined by the user.

The driver module is used to analyze the user-selected or customized keyboard backlight display strategy and generate corresponding LED control signals. In the mobile phone, the software control of each color component of each color LED is implemented by the driver program, which is used as the software interface between the upper layer application program of the mobile phone and the backlight color LED of the mobile phone keyboard, and is controlled by the upper layer mobile phone The application program calls to generate the corresponding color component control signals of the color LED, and realizes the software control of the color LED through the color LED control circuit.

The control circuit uses the control signal generated by the drive module to control the corresponding LED.

It can be seen from Figure 4 that the user sets the backlight display strategy through the human-computer interaction interface provided by the interface module on the mobile phone, and the setting module saves these strategies; Each color component controls the signal, and the control signal controls the LED on the corresponding button through the control circuit to realize personalized display.

The control circuit is a hardware carrier for independent control of various color separation displays of color LEDs, making it possible to control the display of various color separations and color mixing of each keyboard backlight color LED. As shown in Figure 5, the control signal output end of the control circuit is connected with the control signal input end of the illuminant of each button respectively, thus it can be seen that the control circuit in the present invention can make the luminous body of some buttons emit light while the other part The luminous body of the button does not emit light, which is different from the prior art that either all of them are lit to emit light, or all of them are extinguished. Moreover, the input ends of the LEDs of each button used to control the monochromatic light emitters are respectively connected to the control circuit to realize the independent control of each color component of each color LED, which can emit monochromatic light or various monochromatic lights. Mixed shades of light.

For mobile phones that do not provide users with user-defined personalized backlight display strategy settings, the above user interface module and setting module may not be included, and a set of predefined display strategies are set in the mobile phone for users to choose.

The following takes 6 keyboard backlight LED lights as an example to illustrate the process of realizing personalized backlight display:

The 6 LED lights are LED1, LED2, LED3, LED4, LED5, LED6 respectively; each LED is a red, green, blue three-color LED. The predefined keyboard backlight display strategies are as follows:

(1) LED1 red, green; LED3 green, blue; LED5 red; time: 2 seconds;

(2) LED2 green; LED4 red, blue; LED6 red; time: 5 seconds;

(3) LED1 green; LED2 red, blue; LED3 red; LED4 green; LED5 red, blue; LED6 red; time: 2 seconds.

As shown in FIG. 6A, the user defines the above-mentioned personalized keyboard backlight display strategy through the man-machine interface (by prompting the user to select a cyclic display), wherein, the box indicates multiple selections, and multiple selections are possible; the circles indicate single selections. When a certain LED needs to be lit, select the LED in the box, and then select the color, which identifies each color component of the LED; the time indicates the duration of the LED lighting.

The specific setting process of the above-mentioned predefined keyboard backlight display strategy is shown in Figure 6B: in step 10, it is judged whether the number of times set by the user exceeds the maximum number of times that can be set, if so, the user is no longer allowed to set and proceed to step 13 to save the user. The backlight display strategy that has been set; in step 11, prompt the user to select the LED, select the color of the LED, and select the LED display duration; in step 12, judge whether the setting is complete, if so, proceed to step 13, save the backlight display strategy set by the user, otherwise Proceed to step 10 to start a new setup.

After the above backlight display strategy is set, it is saved in the mobile phone. When the keyboard backlight needs to be started, the drive module obtains the above keyboard backlight display strategy set by the user through the setting module, generates corresponding control signals according to the established control algorithm, and then controls the signal Output to the control circuit, and the control circuit controls the personalized display of the keyboard backlight LED.

The control signal generated by the drive module is related to the specific control circuit. For the control circuit shown in Figure 5, the drive module reads the above strategy "(1) LED1 red, green; LED3 green, blue; LED5 red; time: 2 Seconds later, corresponding drive signals are generated for the input terminals of the red and green light emitters of LED1, the green and blue light emitters of LED3 and the red light emitter of LED5, and the control circuit controls the LED to emit light according to the drive signals as follows:

Provide working voltage to the input terminals of the red and green luminous body of LED1, so that it emits colored light mixed with red and green;

Provide working voltage to the input terminals of the green and blue light emitters of LED3, so that it emits colored light mixed with green and blue;

Supply the working voltage to the input end of the red luminous body of LED5 to make it emit red light.

Moreover, the driving module stops outputting driving signals after LED1, LED3 and LED5 emit light for 2 seconds, and the control circuit stops supplying working voltage to these three LEDs.

The control performed by the driving module according to the other two strategies mentioned above is the same as the strategy (1), and will not be repeated here.

The above strategy shows the effect as follows:

(1) Light up LED1, LED3, and LED5; LED1 displays red-green mixed colors, LED3 displays green-blue mixed colors, and LED5 displays red; turn off after 2 seconds of lighting.

(2) Light up LED2, LED4, and LED6; among them, LED2 displays green, LED4 displays red and blue mixed colors, and LED6 displays red; turn off after 5 seconds of lighting.

(3) Light up LED1, LED2, LED3, LED4, LED5, and LED6; where LED1 displays green, LED2 displays red and blue mixed colors, LED3 displays red, LED4 displays green, LED5 displays red and blue mixed colors, and LED3 displays red; light up for 2 seconds then close.

(4) During the time when the backlight of the keyboard needs to be lit, the above process is displayed cyclically.

For multiple backlight display strategies customized by the user, the user can choose to implement one of the backlight display strategies, and the processing flow is shown in Figure 6C: the user is prompted to select a keyboard backlight display strategy through the interface, and after the user selects and confirms, the setting The module saves the user's settings.

Although the mobile phone is taken as an example for illustration above, for keyboards with backlights on other devices, the structure and processing of the control part are the same as above. Of course, as far as the keyboard is concerned, its drive module can be set on the keyboard or in a device connected to the keyboard.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if the modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (9)

1, a kind of supervisory keyboard method backlight is characterized in that, corresponding at least one luminous element of each button of keyboard comprises the steps:

The display strategy backlight of the keyboard of customization is preserved as configuration file, and described keyboard back light display strategy comprises a kind of strategy in the DISPLAY ORDER of luminous element of the luminous duration of Show Color, luminous element of the luminous element of button and button or the combination of multiple strategy;

Read described configuration file, and produce the multi-way control signals of the luminous element that corresponds respectively to each button according to the display strategy backlight in the described configuration file;

Utilize described multi-way control signals to control luminous element respectively and illuminate this luminous element corresponding key.

2, the method for claim 1 is characterized in that, described keyboard is the keyboard on the mobile phone.

3, a kind of keyboard comprises a plurality of buttons, luminous element that is associated with each button and the control circuit that is used to control luminous element, and described luminous element is used to illuminate corresponding key; It is characterized in that described keyboard also comprises a driver module, produce according to the display strategy backlight of the customization of preserving and be used to control the multi-way control signals of each luminous element, and output to described control circuit as configuration file; The control signal output ends of described control circuit links to each other with the signal input end of the luminous element of each button respectively, whether the luminous element of independent respectively each button of control of the multi-way control signals of this control circuit output is luminous, and described keyboard back light display strategy comprises a kind of strategy in the DISPLAY ORDER of luminous element of the luminous duration of Show Color, luminous element of the luminous element of button and button or the combination of multiple strategy.

4, keyboard as claimed in claim 3 is characterized in that, the luminous element of each button has a plurality of inputs that are used to control different glow colors, and each input is connected with the output of described control circuit respectively.

5, keyboard as claimed in claim 4 is characterized in that, the luminous element of each button is made up of a plurality of independently monochromatic luminous elements, and perhaps, the luminous element of each button is made of a plurality of monochromatic luminous element encapsulation.

6, a kind of mobile phone comprises a plurality of buttons, luminous element that is associated with each button and the control circuit that is used to control luminous element, and described luminous element is used to illuminate corresponding key; It is characterized in that this mobile phone also comprises driver module, this driver module is used to control the multi-way control signals of each luminous element according to the display strategy generation backlight of the customization of preserving as configuration file, and outputs to described control circuit; The control signal output ends of described control circuit links to each other with the signal input end of the luminous element of each button respectively, the luminous element of respectively independent each button of control of multi-way control signals by output, described keyboard back light display strategy comprise a kind of strategy in the DISPLAY ORDER of luminous element of the luminous duration of Show Color, luminous element of the luminous element of button and button or the combination of multiple strategy.

7, mobile phone as claimed in claim 6 is characterized in that, described mobile phone also comprises:

Subscriber interface module is used to provide human-computer interaction interface, for customization and inquiry keyboard display strategy backlight;

Module is set, is used to store the user by subscriber interface module selected keyboard back light display strategy or user-defined personalized keyboard back light display strategy.

As claim 6 or 7 described mobile phones, it is characterized in that 8, the luminous element of each button has a plurality of inputs that are used to control different glow colors, each input is connected with the output of described control circuit respectively.

9, mobile phone as claimed in claim 8 is characterized in that, the luminous element of each button is made up of a plurality of independently monochromatic luminous elements, and perhaps, the luminous element of each button is made of a plurality of monochromatic luminous element encapsulation.

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