KR101108842B1 - Apparatus for controlling frame using time-division and method for controlling frame thereof - Google Patents

Abstract

The present invention relates to screen control, and more particularly, to control lighting used as a screen by using a pulse modulation method for controlling each lighting used as a screen when color is displayed on the screen using a time division method. The present invention relates to a screen control apparatus using a time division method and a screen control method using the same. The present invention as described above is the data input means 400 for receiving the color information of the screen to be displayed on the screen means (900);
Data conversion means (500) for converting color information of the input screen into pulse-modulated color data;
A plurality of first to Nth memory means (310) (320) (330) for sequentially storing the pulse-modulated color data in one screen unit to be displayed on the screen means (900);
When the plurality of first to N-th memory means 310, 320 and 330 sequentially store pulse-modulated color data in units of one screen, the plurality of first to N-th memory means 310 ( Address decoding means 200 for selectively applying a write address to each of 320 and 330;
Time division means (600) for dividing the pulse-modulated color data stored in each of the plurality of first to Nth memory means (310, 320, 330) in time and outputting a signal for reading;
Output means (700) for outputting pulse-modulated color data output from the first to Nth memory means (310, 320, 330) to the screen means (900);
Selected according to the color of the screen data actually output to the screen means 900 of the pulse-modulated color data from the first to N-th memory means (310, 320, 330) output from the output means (700) Power circuit means 800 for supplying power to the apparatus; And
The first to Nth address decoding means 210 and 220 to sequentially store the pulse-modulated color data in units of one screen in the plurality of first to Nth memory means 310, 320 and 330. And controls the output means 700 to output the pulse modulated color data output from the first to Nth memory means 310, 320, 330 to the screen means 900. According to the color of the screen data actually output to the screen means 900 of the pulse-modulated color data from the first to N-th memory means 310, 320, 330 output from the output means 700 It provides a screen control device using a time division method comprising a; control means 100 for controlling the power circuit means 800 to selectively supply power.

Description

Apparatus for controlling frame using time-division and method for controlling frame

The present invention relates to a screen control device, and more particularly, to control lighting used as a screen by using a pulse modulation method, when using a time division method for each lighting used as a screen when color is displayed on the screen. The present invention relates to a screen control apparatus using a time division method that enables control, and a screen control method thereof.

In general, the screen is not only a TV or a monitor, but also a large display board such as an outdoor signage, a billboard, a stadium, and the like, which are commonly seen on the street. Such screens are implemented or will be implemented in various ways such as CRT, projection, LCD, LED, PDP and AMOLED.

In today's information society, the role of electronic display devices becomes more and more important, and various electronic display devices are widely used in various industrial fields. In the electronic display field, new functions of electronic display devices are continuously being developed to meet the needs of the information society which is diversified.

In general, an electronic display device refers to a device that transmits various information to a human through vision. In other words, the electronic display device is an electronic device that converts electrical information signals output from various electronic devices into optical information signals that can be recognized by human eyes, and can be said to be a device that plays a role of a bridge between humans and electronic devices. .

In such an electronic display device, when an optical information signal is displayed by a light emitting phenomenon, it is called an emissive display device, and when an optical information signal is displayed by light modulation due to reflection, scattering, or interference phenomenon, It is called a non-emissive display device. The light emitting display device, also called an active display device, includes a cathode ray tube (CRT), a plasma display panel (PDP), a light emitting diode (LED), and an electroluminescent display (electroluminescent display). display; ELD). The light-receiving display device, which is a passive display device, includes a liquid crystal display (LCD) (electrochemical display (ECD)), an electrophoretic image display (EPID), and the like.

Cathode ray tube (CRT), the oldest display device used in image display devices such as televisions and computer monitors, occupies the highest share in terms of display quality and economy, but has a high weight, large volume and high consumption. It has many disadvantages such as power.

Therefore, in recent years, due to the rapid progress of semiconductor technology, electronic display devices suitable for a new environment according to the solidification, low voltage and low power of various electronic devices, and small size and light weight of electronic devices, that is, thin, light, low driving voltage and low power consumption The demand for a flat panel display device with the specificity of is increasing rapidly.

Among the various flat panel display devices currently developed, liquid crystal displays or light emitting diodes are thinner and lighter than other display devices, and have low power consumption and low driving voltage, and can display images close to cathode ray tubes. It is widely used in.

The liquid crystal display uses a transmissive liquid crystal display device that displays an image using a light source such as a backlight, a reflective liquid crystal display device using natural light, and a built-in light source of the display device itself in a dark place where an indoor or external light source does not exist. The display may be classified into a reflection-transmissive liquid crystal display device which operates in a transmissive display mode for displaying and operates in a reflective display mode for reflecting and displaying external incident light in an outdoor high-illuminance environment.

In addition, the LED is a semiconductor compound, the color of light emitted according to the semiconductor material is different, and is smaller than a fluorescent lamp using a light bulb or a high voltage. In addition, it uses a low voltage of about DC 5V, low power consumption, small heat generation, high energy efficiency and long life, semi-permanent, and a variety of light emitting colors. Thus, a single color LED or a combination of red (R), green (G), and blue (B) tricolor LEDs is used to display advertising text or pictures.

In addition, LED is used as a light source of the backlight unit of display apparatuses, such as LCD and DLP. Such an LED is a point light source and has high brightness and excellent color reproducibility. A light emitting device driven by a current such as an LED requires a driving device that minimizes the ripple component of the output current and improves the response characteristics in order to improve the image quality of the display screen.

Such a method for controlling the brightness of the LED constituting the screen can be largely divided into a method of constant current control (pulse modulation) and pulse modulation (Pulse Modulation).

In the constant current control method, the brightness control is made high or low. That is, brightness is controlled continuously by controlling the amount of current. In this case, since a certain amount of current must be flowed at all times so that the LED is always "ON", the high cost of the hardware and the heat generated by the power consumed by the control circuit cause many problems.

On the other hand, the pulse modulation method controls the constant voltage suitable for driving the constant current of the LEDs by varying the width of the waveform. The pulse modulation method adjusts the brightness at the timing of turning on and off the LEDs, that is, "ON / OFF" time ratio. To control. In this case, since only " ON / OFF " is generated, there is little heat generation of the control circuit. Therefore, in the current lighting apparatus, each LED is controlled by a pulse modulation method, where one pulse modulation control circuit is required for each LED.

In the case of a display device that constitutes one color pixel with three color LEDs of red (R), green (G), and blue (B), each LED in the pixel is turned "ON" and "OFF". When controlling only with ")", only 8 (= 2 ³ ) colors including white and black are represented, and brightness is not controlled. This is the method used for LED signs commonly found on the street.

Red (R), green (G), and blue (B) tricolor LEDs in the pixel are each controlled by three 8-bit pulse modulation control circuits. It can be implemented, but the hardware is expensive. This is a method used in large billboards, such as stadiums, billboards.

However, the LED lighting control using the conventional pulse modulation method as described above had a problem that each must be provided with a pulse modulation control circuit in proportion to the number of LEDs constituting the screen. As a result, controlling each LED individually allows various colors to be displayed, while the circuit becomes too complicated to increase the hardware cost required for constructing the circuit, and the circuit size becomes very large.

Accordingly, an object of the present invention is to solve the above-mentioned problems, an object of the present invention is to use the screen when the color is expressed on the screen by using a pulse modulation method to control the lighting used as the screen The present invention provides a screen control apparatus using a time division method and a screen control method thereof, the time division method being capable of controlling each lighting.

In order to achieve the above object, the present invention provides data input means 400 for receiving color information of a screen to be displayed on the screen means 900; Data conversion means (500) for converting color information of the input screen into pulse-modulated color data; A plurality of first to Nth memory means (310) (320) (330) for sequentially storing the pulse-modulated color data in one screen unit to be displayed on the screen means (900); When the plurality of first to N-th memory means 310, 320 and 330 sequentially store pulse-modulated color data in units of one screen, the plurality of first to N-th memory means 310 ( Address decoding means 200 for selectively applying a write address to each of 320 and 330; Time division means (600) for dividing the pulse-modulated color data stored in each of the plurality of first to Nth memory means (310, 320, 330) in time and outputting a signal for reading; Output means (700) for outputting pulse-modulated color data output from the first to Nth memory means (310, 320, 330) to the screen means (900); Selected according to the color of the screen data actually output to the screen means 900 of the pulse-modulated color data from the first to N-th memory means (310, 320, 330) output from the output means (700) Power circuit means 800 for supplying power to the apparatus; And the first to N-th address decoding means 210 (220) to sequentially store the pulse-modulated color data in units of one screen in the plurality of first to N-th memory means (310, 320, 330). 230), and the output means 700 to output the pulse-modulated color data output from the first to Nth memory means (310, 320, 330) the screen means (900) And among the pulse-modulated color data outputted from the first to Nth memory means 310, 320, and 330 output from the output means 700, the color of the screen data actually output to the screen means 900. According to the present invention, there is provided a screen control apparatus using a time division method, comprising: a control means (100) for controlling the power circuit means (800) to selectively supply power.

Here, the pulse modulating means is preferably pulse modulating means of one of pulse amplitude modulation (PAM), pulse width modulation (PWM), pulse phase modulation (PPM).

The time dividing means 600 includes an oscillator 610 for oscillating a predetermined frequency, a counter 620 for counting an oscillation frequency oscillated in the oscillator 610, and a count value of the count 620. The time division pointer 630 designating a point for reading pulse-modulated color data from the first to Nth memory means 310, 320, 330 is preferable.

In addition, the output means 700 is preferably configured to have the same output port as the number of light emitting diodes when the screen means 900 is composed of light emitting diodes.

Here, the control means 100, address decoding means 200, memory means 300, data input means 400, data conversion means 500, time division means 600, output means 700, power circuit The screen control apparatus using the time division method including the means 800 and the screen means 900 is preferably arranged in parallel in accordance with the resolution size of the screen.

In addition, the screen means 900 is preferably an LED or a display device using the LED backlight.

In addition, in order to achieve the above object, the present invention provides a screen control method of a screen control apparatus using a time division method according to claim 1, comprising: inputting color information of a screen through a data input means (400); Pulse-modulated converting the input color information into color data constituting a screen by the data converting means (500); The control means 100 sequentially stores the screen data in the first to Nth memory means 310, 320, 330 through the first to Nth address decoding means 210, 220, 230. step; The time dividing means 600 divides the pulse-modulated color data stored in the first to N-th memory means 310, 320, 330 in time, reads them, and outputs them to the output means 700, and the control means ( Controlling address decoding means connected to the memory means such that color data constituting the next new screen is stored as the memory means for outputting the color data; When the output means 700 outputs color data of the output means 700 under the control of the control means 100, the control means 100 selectively supplies power to the screen means 900 that actually configures the screen. Controlling the power circuit means 800 to supply the power; And outputting a screen from the screen means 900. The screen control method of the screen control apparatus using the time division method of the present invention comprises a.

Here, when the screen means 900 is configured as a display device using an LED or an LED, the control means 100 preferably controls the power circuit means 800 to selectively supply power to the LED. Do.

The screen control apparatus using the time division method and the screen control method thereof according to the present invention have the following effects.

First, the LED lighting control device using the time division pulse modulation method divides each color to be expressed on the screen in time, and a plurality of red (R), green (G), By controlling the modulation of the blue (B) three-color LEDs in the full color (full color) screen to simplify the configuration of the LED lighting control circuit has the effect of reducing the cost.

Second, it is possible to simplify the control circuit configuration and reduce costs by applying to other display devices such as LCDs employing LED lighting.

Third, power consumption can be minimized by selectively supplying power to the LED light.

1 is a block diagram illustrating a screen control apparatus using a time division method according to the present invention;
FIG. 2 is a block diagram for explaining an example of the time division means shown in FIG. 1; FIG.
3 is a view for explaining an example of the pulse modulation data in the screen control apparatus using a time division method according to the present invention;
4 is a view showing an example of a screen configuration in which modules are arranged in parallel according to the resolution in the screen control apparatus using a time division method according to the present invention;
5 is a view illustrating an example of a screen configuration in which an output port is expanded according to resolution in a screen control apparatus using a time division method according to the present invention;
6 is a flowchart for explaining an example of a screen control method of a screen control apparatus using a time division method according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, although the term used in the present invention is selected as a general term that is widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, since the meaning is described in detail in the description of the relevant invention, It is to be understood that the present invention should be grasped as a meaning of a term that is not a name of the present invention. Further, in describing the embodiments, descriptions of technical contents which are well known in the technical field to which the present invention belongs and which are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

1 is a block diagram illustrating a screen control apparatus using a time division method according to the present invention. As shown in FIG. 1, the screen control apparatus for a time division method according to the present invention includes a control means 100, an address decoding means 200, a memory means 300, a data input means 400, and a data conversion means 500. , Time dividing means 600, output means 700, power circuit means 800, and screen means 900.

The data input means 400 receives color information of a screen to be displayed on the screen means 900. At this time, the color information of the input screen is red (R), green (G), blue (B) information.

The data converting means 500 converts color information of the input screen into red (R), green (G), and blue (B) color data into pulse modulation data. In this case, one of pulse amplitude modulation (PAM), pulse width modulation (PWM), and pulse phase modulation (PPM) may be used as the pulse modulation method.

The memory means 300 is composed of a plurality of first to Nth memory means 310, 320, 330. In this case, the plurality of first to Nth memory means 310, 320, and 330 sequentially store pulse-modulated color data in one screen unit to be displayed on the screen means 900.

The address decoding means 200 includes a plurality of first to N-th memories when the color-modulated color data in one screen unit is sequentially stored in the plurality of first to N-th memory means 310, 320, 330. A write address is optionally applied to each of the means 310, 320, 330.

The time dividing means 600 divides the pulse-modulated color data stored in each of the plurality of first to Nth memory means 310, 320, 330 in time and outputs a signal for reading. Such time division means 600 may be configured as shown in FIG. 2 is a block diagram illustrating an example of the time division means illustrated in FIG. 1, and the time division means 600 includes an oscillator 610, a counter 620, and a time division pointer 630 as illustrated in FIG. 2. It can be configured as. Here, the oscillator 610 oscillates a predetermined frequency, the counter 620 counts the oscillation frequency, the time division pointer 630 is the first to the N-th memory means 310 according to the count value of the counter 620 ( 320) a point for reading pulse-modulated color data from 330 is specified.

The output means 700 outputs the pulse modulated color data output from the first to Nth memory means 310, 320, 330 to the screen means 900. Here, the output means 700 is preferably configured to have the same output port as the number of light emitting diodes when the screen means 900 is composed of light emitting diodes. For example, when 16 R, G, and B light emitting diodes are respectively configured, the output means 700 is configured to have 48 output ports.

On the other hand, the power circuit means 800 is actually output to the screen means 900 of the pulse-modulated color data from the first to N-th memory means 310, 320, 330 output from the output means 700 Supply power selectively according to the color of screen data. At this time, the power circuit means 800 may be configured as a constant current circuit.

The screen means 900 may be an LCD or a DLP using an LED or an LED backlight.

Meanwhile, the control means 100 controls the address decoding means 200 to sequentially store pulse-modulated color data in units of one screen in the plurality of first to Nth memory means 310, 320, 330. And output means 700 to output pulse-modulated color data output from first to Nth memory means 310, 320, 330 to screen means 900, and output from output means 700. Power circuit means for selectively supplying power according to the color of the screen data actually output to the screen means 900 of the pulse-modulated color data from the first to N-th memory means (310, 320, 330) 800).

3 is a view for explaining an example of the pulse modulation data in the screen control apparatus using a time division method according to the present invention. As an example of the pulse modulation data in the screen control apparatus using the time division method according to the present invention, as shown in FIG. 3, the plurality of first to Nth memory means 310, 320, and 330 are respectively included in the first to the second. The N address decoding means 210, 220 and 230 are correspondingly connected to generate a write address ADDRw that specifies a write position of the pulse modulated data.

In this case, the control means 100 enables the first to Nth address decoding means 210, 220, 230 to be controlled to enable the plurality of first to Nth memory means 310, 320, 330. While the content to be displayed on the screen means 900 is output from one memory means, the next screen data is sequentially selected to be stored in the other memory means.

Meanwhile, the time dividing means 600 divides and reads the pulse modulated color data stored in the first to Nth memory means 310, 320, 330 in time. At this time, the oscillator 610 of the time division means 600 oscillates a constant frequency, the counter 610 counts the oscillation frequency from the oscillator 610, and the time division pointer 620 is a count value of the counter 610. Accordingly, a point for reading pulse-modulated color data from the first to Nth memory means 310, 320, 330 is designated. Here, when the number of color expression bits per pixel of the screen is n, the oscillation frequency is 2 ⁿ . Count, 2 ⁿ in time Divide.

And, the output means 700 is a pulse read from the first to N-th memory means 310, 320, 330 through the output port (port) of the output means 700 under the control of the control means 100 Output the modulated color data.

The power circuit means 800 receives the pulse-modulated color data and selectively supplies power to the LEDs constituting the screen means 900. As described above, the screen means may be LCD, DLP, or the like, which is composed of LEDs or uses LEDs as backlights.

For example, in the case of configuring the screen with 16 pixels, color information of the screen is received through the data input unit 400. The input color information is transmitted to the data converting means 500. The data converting means 500 converts the color data of the red (R), green (G), and blue (B) of the pixels constituting the screen into pulse modulation data.

As an example, the color ratio is 25% red (R) of pixel 1, 12.5% of green (G), 75% of blue (B), and 75% of red (R) of pixel 2, green (G). Assuming that silver is 25% and blue (B) is 12.5%, the data conversion means 500 uses pulses corresponding to the color ratios of red (R), green (G), and blue (B) constituting each pixel in a pulse modulation period. Convert to modulated data.

Here, the LED is turned “ON” during the “high” level section of the pulse modulation data DATA _PM , and is turned “OFF” during the “low” level section to turn off. .

Therefore, when the frame is composed of 16 pixels, the screen is composed of a total of 48 (= 16 × 3) LEDs, each of 16 red (R), green (G), and blue (B) tricolor LEDs. do. In this case, 16 pixel memories are provided in the plurality of first to Nth memory means 310, 320, 330, and pulse modulation of red (R), green (G), and blue (B) is provided in each pixel memory. Color data DATA _PM is stored.

The plurality of first to Nth memory means 310, 320, 330 are pulse-modulated colors according to the addresses ADDRw applied from the first to Nth address decoding means 210, 220, 230, respectively. Save the data.

On the other hand, the control means 100 applies the enable signal to the first to N-th address decoding means 210, 220, 230, the plurality of first to N-th memory means (310, 320, 330) It is controlled to be selected sequentially. That is, the control means 100 is the first to the N-th memory means 310, 320 (while the content to be displayed on the screen is output from one of the first to N-th memory means (310, 320, 330) In operation 330, different screen data is sequentially stored, and accordingly, different screen data is sequentially output.

Here, the pulse-modulated data of red (R), green (G), and blue (B) stored in the first to Nth memory means (310, 320, 330) is based on the time division of the time division means (600). Read sequentially For example, if each color of the color image of the entire screen is to be expressed in 3 bits, the color is expressed by dividing it into 8 (= 2 ³ ) in time and expressing it by the divided time. To this end, the counter 610 operates as an octal counter to count the oscillation frequency. The count value is passed to the time division pointer 620.

The time division pointer 620 emits a point signal for reading pulse-modulated color data stored in the first to Nth memory means 310, 320, 330 according to the input count value. When the color is expressed in 3 bits, 8 divisions (= 1 / 8T) generate a point signal per screen, that is, 8 times per frame, and correspond to the first to Nth memory means 310, 320, 330. The memory means reads the red (R), green (G), and blue (B) pulse-modulated data of each pixel according to the point signal and transmits the data to the output means 700.

On the other hand, the output means 700 is an output (R) output eight times for each pixel from one of the first to N-th memory means (310, 320, 330) by the enable signal applied from the control means (100) ), Green (G) and blue (B) pulse modulated color data is provided to the power supply circuit means 800 through the output ports.

Then, the power circuit means 800 supplies power to the red (R), green (G), and blue (B) LEDs of the entire pixels of the screen constituting the screen means 900 for the color data output from the output means 700. To provide color on the screen. At this time, the control means 1000 controls the power circuit means 800 so that power is selectively supplied only to the LEDs constituting the screen.

4 is a view showing an example of a screen configuration in which modules are arranged in parallel according to the resolution in the screen control apparatus using a time division method according to the present invention. In the screen control apparatus using the time division method according to the present invention, the screen configuration in which the modules are arranged in parallel according to the resolution is as shown in FIG. 4, and the configuration of FIG. (B)) may be arranged in parallel with the desired resolution size ((a) of FIG. 4).

5 is a diagram illustrating an example of a screen configuration in which an output port is expanded according to a resolution in a screen control apparatus using a time division method according to the present invention. In the screen control apparatus using the time division method according to the present invention, the screen configuration in which the output port is expanded in accordance with the resolution is shown in FIG. 5, and the first to Nth memory means 310, 320, 330 of FIG. The size is the size of the desired resolution, and as shown in Fig. 5, the number of output ports of the output means 700 is expanded by the number of the desired resolution (Fig. 5A) (Fig. 5C). do.

6 is a flowchart for explaining an example of a screen control method of a screen control apparatus using a time division method according to the present invention. As an example of the screen control method of the screen control apparatus using the time division method according to the present invention, as shown in FIG. 6, color information of the screen is input through the data input means 400 (S110).

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The input color information is transmitted to the data converting means 500, and the data converting means 500 stores the color data of the red, green, and blue colors of the pixels constituting the screen. Convert to pulse modulation data (S130).

The control means 100 stores the screen data sequentially in the first through Nth memory means 310, 320, 330 through the first through Nth address decoding means 210, 220, 230. Control (S150).

Meanwhile, the time dividing means 600 divides the pulse modulated color data stored in the first to N-th memory means 310, 320, 330 in time, reads them, and outputs them to the output means, and the control means 100 The address decoding means connected to the memory means is controlled to store the color data constituting the next new screen as the memory means for outputting the color data (S170).

The output means 700 is pulse-modulated read from the first to Nth memory means 310, 320, 330 through an output port of the output means 700 under the control of the control means 100. In this case, the power circuit means 800 selectively supplies power to the LEDs constituting the screen in the screen means 900 (S190). Therefore, power consumption can be minimized.

Accordingly, the screen is output from the screen means 900 (S210).

Although the present invention has been described by way of example as described above, the present invention is not necessarily limited to these examples, and various modifications can be made without departing from the spirit of the present invention. Therefore, the examples disclosed in the present invention are not intended to limit the technical idea of the present invention but to explain the present invention, and the scope of the technical idea of the present invention is not limited by these examples. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: control means 200: address decoding means
300: memory means 400: data input means
500: data conversion means 600: time division means
610: oscillator 620: counter
630: time division pointer 700: output means
800: power circuit means 900: screen means

Claims (8)

Data input means 400 for receiving color information of a screen to be displayed on the screen means 900;
Data conversion means (500) for converting color information of the input screen into pulse-modulated color data;
A plurality of first to Nth memory means (310) (320) (330) for sequentially storing the pulse-modulated color data in one screen unit to be displayed on the screen means (900);
When the plurality of first to N-th memory means 310, 320 and 330 sequentially store pulse-modulated color data in units of one screen, the plurality of first to N-th memory means 310 ( Address decoding means 200 for selectively applying a write address to each of 320 and 330;
Time division means (600) for dividing the pulse-modulated color data stored in each of the plurality of first to Nth memory means (310, 320, 330) in time and outputting a signal for reading;
Output means (700) for outputting pulse-modulated color data output from the first to Nth memory means (310, 320, 330) to the screen means (900);
Selected according to the color of the screen data actually output to the screen means 900 of the pulse-modulated color data from the first to N-th memory means (310, 320, 330) output from the output means (700) Power circuit means 800 for supplying power to the apparatus; And
The first to Nth address decoding means 210 and 220 to sequentially store the pulse-modulated color data in units of one screen in the plurality of first to Nth memory means 310, 320 and 330. And controls the output means 700 to output pulse-modulated color data output from the first to Nth memory means 310, 320, 330 to the screen means 900. And among the pulse-modulated color data outputted from the first to Nth memory means 310, 320, and 330 output from the output means 700, the color of the screen data actually output to the screen means 900. And control means (100) for controlling the power circuit means (800) to selectively supply power according to the apparatus of the present invention.
The method of claim 1,
The pulse modulation means,
And a pulse modulation means of one of pulse amplitude modulation (PAM), pulse width modulation (PWM), and pulse phase modulation (PPM).
The method of claim 1,
The time division means 600,
Oscillator 610 for oscillating a constant frequency,
A counter 620 for counting the oscillation frequency oscillated by the oscillator 610;
And a time division pointer 630 for designating a point for reading pulse-modulated color data from the first to Nth memory means 310, 320, 330 according to the count value of the count 620. Screen control device using a time division method.
The method of claim 1,
The output means 700 is a screen control device using a time division method, characterized in that the screen means 900 is configured to have the same output port as the number of the light emitting diode when the light emitting diode.
The method of claim 1,
The control means 100, the address decoding means 200, the memory means 300, the data input means 400, the data conversion means 500, the time division means 600, the output means 700 And the screen control device using the time division method comprising the power circuit means 800 and the screen means 900 in parallel according to the resolution size of the screen.
The method of claim 1,
The screen means (900) is a screen control device using a time division method, characterized in that the LED or a display device using the LED backlight.
In the screen control method of the screen control apparatus using the time division method according to claim 1,
Inputting color information of a screen through the data input means 400;
Pulse-modulated converting the input color information into color data constituting a screen by the data converting means (500);
The control means 100 sequentially stores the screen data in the first to Nth memory means 310, 320, 330 through the first to Nth address decoding means 210, 220, 230. step;
The time dividing means 600 divides the pulse-modulated color data stored in the first to N-th memory means 310, 320, 330 in time, reads them, and outputs them to the output means 700, and the control means ( Controlling address decoding means connected to the memory means such that color data constituting the next new screen is stored as the memory means for outputting the color data;
When the output means 700 outputs color data of the output means 700 under the control of the control means 100, the control means 100 selectively supplies power to the screen means 900 that actually configures the screen. Controlling the power circuit means 800 to supply the power; And
And outputting a screen from the screen means (900). Screen control method of a screen control apparatus using a time division method characterized in that it comprises a.
The method of claim 7, wherein
When the screen means 900 is configured as a display device using LEDs or LEDs, the control means 100 controls the power circuit means 800 to selectively supply power to the LEDs. Screen control method of screen control device using time division method.

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