KR100452986B1 - led light control method of air conditioner - Google Patents

Abstract

The present invention relates to a display unit brightness control method of the air conditioner, and more particularly to a display unit brightness control method of the air conditioner to adjust the brightness of the display unit of the air conditioner dark or bright according to the user's needs. In the method of controlling the brightness of the display unit of the air conditioner of the present invention, when the brightness of the display unit is lightly or darkly input through a key input, the brightness of the display unit is controlled by the signal, and accordingly, the user adjusts the brightness of the display unit. Therefore, according to the present invention, the user can control the brightness of the display unit of the air conditioner according to the situation as necessary, thereby increasing the user's satisfaction with the product.

Description

LED light control method of air conditioner {led light control method of air conditioner}

The present invention relates to a display unit brightness control method of the air conditioner, and more particularly to a display unit brightness control method of the air conditioner that can adjust the brightness of the display unit of the air conditioner according to the user's needs.

1 is a configuration diagram for controlling the brightness of the display unit of the conventional air conditioner.

Each control unit 20 controls a signal input by a user, a data unit 40 which transmits an output signal of the control unit 20 to a display unit through each data line, and an output signal of the control unit 20. The scan unit 50 transmits the display unit through a line, and the LED display unit 30 turns on the light emitting diode by the control signal transmitted from the data line and the scan line.

Hereinafter, a detailed circuit configured to control display unit brightness of an air conditioner according to the related art will be described.

2 is a detailed display unit scan output circuit for controlling the brightness of the display unit of the air conditioner.

When a user inputs a signal through key input, the controller 20 outputs a corresponding signal according to the input signal. The output signal is input to the data line of the data unit 40 and the scan line of the scan unit 50, respectively. The output signal is located at each port of the LED display unit 30 through the data line and the scan line. When the signals input to the LED display unit 30 are each high output waveforms, the light emitting diodes are turned on.

This series of processes will be described in detail as follows.

When a user inputs a signal through key input, the controller 20 inputs the signal. On the basis of this input signal, HIGH is output from the data 1 DATA 1 of the control unit 20, and the high output signal is transmitted through the data line 5 of the data unit 40. It is entered in port 8 of.

Simultaneously with the above process, a high signal is output from scan 1 (SCAN 1) of the controller 20 and input to port 13 of the LED display unit 30 through the scan line 6 of the scan unit 50.

At this time, each of the high output signal is supplied to the LED of the LED display unit connected to the point where the port 8 and 13 meet.

As another example, when a user inputs a signal through key input, the controller 20 inputs the signal. Based on the input signal, a low signal is output from the data 6 (DATA 6) of the controller 20, and the low output signal inverts the waveform through the data line 7 of the data unit 40. It is input to the inverter. The output waveform of data 6 passing through the inverter becomes a high output waveform. The high output waveform is input to port 1 of the LED display unit 30 through the data line 7.

Simultaneously with this process, a high signal is output from SCAN 4 of the controller 20, and the high output signal is transmitted to port 16 of the LED display unit 30 through the scan line 8 of the scan unit 50. Is entered.

At this time, each of the high output signal is supplied to the light emitting diode of the LED display unit connected to the point where the port 1 and 16 meet.

In order to make the display part operated by such a process appear to be always on, the control unit 20 should repeat the above control while outputting a high output signal to each data line and scan line at regular time intervals. Therefore, the repetition of the operation seems to turn on the LED display 30 as a whole.

On the other hand, the output waveform represented by the circuit is as shown in FIG.

The key input signal is input to the controller 20 through the user's key input. The controller 20 controls the input signal and outputs a scan output waveform to the LED display unit 30 through the data unit 40 and the scan unit 50. In this case, the conventional display unit scan output waveform has scan output periods T1 and T2 and the control unit 20 controls the scan output period. The controlled scan output waveform is then input to the display portion, whereby the display portion lights up.

T1 is the scan 1 cycle output period, which is the maximum time that appears to be on continuously at the human eye, and usually applies less than 16 ms. And T2 is represented by T2 = T1 / N time so that the scan line output ON time appears to be constantly ON at human time. That is, the scan line output waveform of T2 appears within the scan one cycle output period of T1.

4 is a flowchart of an LED scan output control according to the prior art.

When the user inputs a signal through key input, the signal is input to the controller 20. Then, the control unit 20 determines whether the output scan signal has passed the scan period T2 based on the input signal (step 100).

If the control unit 20 determines that the scan period T2 has not elapsed, the controller 20 returns to an initial state (step 102). That is, the current output state is maintained as it is during the scan period T2.

However, if the control unit 20 determines that the scan period T2 has elapsed, the control unit 20 controls the scan counter specifying the scan line to increase (step 104). Under the control of the controller 20, a low waveform is output from the output ports of the scan unit 50 and the data unit 40, and has a standby state for outputting a signal to be input in the future (step 106). . As the scan counter increases, the controller 20 controls to select a scan line (step 108).

When line 1 is selected by the controller 20, a scan waveform is output from the port of output data connected to line 1 and the display unit (step 110). That is, when the LED is turned on in the scan line 1, data is output to the data output port connected to the LED.

As a result, the high output waveform is output from the scan line 1 port in step 110 (step 112). Therefore, the light emitting diode of the LED display unit 30 is turned on due to the high output waveform.

In order for the LED display unit 30 to appear to be lit continuously, the steps from step 108 to step 112 are repeatedly executed. As a result, in step 108, line selection is repeated from 1 to N, and the display unit continuously emits light.

That is, when the line 1 is selected (steps 108 through 112) and when the line 2 is selected (steps 114 through 118), when the line 3 is selected (steps 120 through 124) In the step), when the line N is selected (steps 126 to 130), the processes are performed in the same manner.

As described above, after the scan counter outputs the output waveform from each scan line from 1 to N, the controller 20 controls the scan counter to be set to 0 (step 132). Accordingly, the scan counter is returned to the initialization state (step 134).

That is, in the conventional display unit control, each scan line of the scan counter is repeatedly executed sequentially from 1 to N according to the determination of the control unit 20. Thus, the data output from the scan line is controlled to intersect with the data output from the data output port by the LED display unit 30 so that the light emitting diodes of the LED display unit 30 are sequentially turned on.

Therefore, the display unit of the air conditioner according to the prior art has only a control to turn on a plurality of light emitting diodes sequentially in the display unit consisting of a plurality of light emitting diodes, there was a problem that the user can not variably control the brightness adjustment when sleeping or as needed .

Accordingly, an object of the present invention is to provide a display unit (LED) brightness control method for controlling the display unit (LED) brightness of the air conditioner according to the needs of the user.

1 is a configuration diagram for display brightness control of the air conditioner according to the prior art.

Figure 2 is a detailed circuit of the LED scan output of a conventional air conditioner.

3 is an output waveform showing an LED scan output waveform of a conventional air conditioner.

4 is a flow chart of LED scan control output of a conventional air conditioner.

5a is a front view of a separate air conditioner main body according to the present invention;

5B is an enlarged view of a display panel provided in a main body of a separate air conditioner.

6 is an output waveform showing the LED scan output waveform of the air conditioner according to the present invention.

Figure 7 is a flow chart of the LED brightness control key (KEY) input of the air conditioner according to the present invention.

8A and 8B are flowcharts of LED scan control output of an air conditioner according to the present invention;

Explanation of symbols on the main parts of the drawings

5: data line 6: scan line

20: control unit 30: LED display unit

40: data portion 50: scan portion

Brightness control method of the display unit (LED) of the air conditioner according to the present invention for achieving the above object, the counting signal is transmitted through a scan line, a separate air conditioner equipped with a display unit is turned on when a light signal is input through the data line A main body and a remote control are provided, comprising: inputting a brightness control signal to the main body or the remote control of the separate air conditioner; Determining whether the signal is set to dark or bright according to the input of the brightness control signal; According to the determination, it comprises a brightness adjustment step of adjusting the brightness of the display unit according to the signal to light or dark.

Hereinafter, a method of controlling brightness of a display unit of an air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.

5A is a front view of a separate air conditioner main body according to the present invention.

The main body of the separate type air conditioner includes a discharge port 80 for discharging cold air to the outside, and a display unit plate 85 for displaying a user's confirmation of each operation function of the air conditioner. In addition, the display panel 85 is a key input unit 60 for the user to input each operation function of the air conditioner, and adjust the brightness of the display unit according to each operation function, and adjustment according to each operation function according to the key input And a display unit 30 indicating the brightness.

According to the operation function through the singer key input unit 60, the air driven in the air conditioner is discharged through the discharge port 80 provided in the main body of the separate type air conditioner, and each operation function input by the user through the display unit 30. The brightness of the display unit 30 according to the display is displayed.

5B is an enlarged view of the display panel provided in the main body of the separate type air conditioner.

The user inputs each operation function of the air conditioner and the brightness of the display unit 30 through the key input unit 60 provided in the display panel 85. The input signal is transmitted to the controller 20, and the controller 20 controls the transmitted signal and outputs the signal to the display unit 30. The signal is input to the display unit 30 provided on the display plate 85 by the signal. In response to the signal, the display unit 30 outputs the input brightness. Therefore, the brightness of the display unit 30 adjusted by the user is shown.

6 shows an LED scan output waveform in accordance with the present invention. And the configuration for controlling the brightness of the display unit of the air conditioner in the present invention will be described with reference to FIG.

The key input signal is input to the controller 20 through the user's key input. The controller 20 controls the input signal to output a scan output waveform to the LED display unit 30. In this case, the scan output waveform has a scan output period of T1, T2, and T3. That is, the controller 20 controls the scan period of the scan output waveform. The controlled signal is input to the LED display unit 30.

The scan periods T1, T2, and T3 constituting the scan output waveform will be described in detail as follows.

The T1 is a scan 1 cycle period, which is the maximum time that appears to be ON continuously at a human time, and is usually applied in 16 ms or less. Therefore, the waveform output from each scan line cannot exceed T1.

And T2 is the scan line output ON time, so that it looks constant as if it was turned ON continuously at human time. The T2 is T1 / N time, and each scan line output time is determined at a constant ratio among the scan 1 cycle outputs. Therefore, T2 is always formed within the period T1.

Finally, T3 is the scan line output duty time, so that the display turns ON by a certain ratio (X%) of T2 time, while it looks constant as if it had been turned on at human time. That is, the scan line output ON duty time T3 is a time for darkly adjusting the brightness of the LED display unit 30 in comparison with the existing one. Therefore, looking at the expression representing the scan period of T3 can be defined as follows.

0 <T3 / T2 (X%) <T2

Therefore, the smaller the T3, the darker the LED will be.

Therefore, within the scan 1 cycle period T1, the time T2 at which the scan line output is turned on and the output ON duty time T3 indicating dark brightness are displayed. And T3 exists within the T2 cycle, which seems to be on continuously from human perspective. As a result, T3 present within the period T2 represents a smaller scan period, so that T3 represents the degree of brightness or the degree of darkness.

7 is a flowchart illustrating a brightness key input operation of the display unit LED of the air conditioner according to the present invention.

First, it is determined whether the user inputs the brightness of the display unit using the brightness control key provided in the main body (step 200). If the brightness of the display unit is not input by the brightness control key of the main body, it is determined whether the brightness of the display unit LED of the main body is adjusted by the remote controller (step 202). In step 200 or step 202, it is determined whether the brightness control state of the display unit is set to a dark state (step 204). Thus, according to the determination, the brightness adjustment is selected in the dark state through the key input (step 206), or in accordance with the determination, the brightness adjustment is selected in the bright state (step 208).

So far, the process of inputting the brightness control key of the display unit has been described. By the output control according to the brightness control key input, the brightness of the light appearing on the display unit is different.

8A and 8B are flowcharts of the LED scan control output of the air conditioner according to the present invention.

When a signal is input by the brightness control key KEY, the controller 20 controls the input signal. By the control, the controller 20 checks the scan period. When the user sets the brightness control to dark light in step 206, it is determined whether a T3 scan period for outputting a dark light waveform has elapsed (step 300). If the control unit 20 determines that the T3 scan period has not elapsed in step 300, it returns to an initial state (step 302). That is, the current output state is maintained for the scan period T3.

However, if the control unit 20 determines that the T3 scan period has elapsed in step 300, the control unit 20 controls the scan counter for designating the scan line to increase (step 304). Under the control of the controller 20, waveforms are output low at all scan line ports (step 306). That is, it has a standby state to output a signal to be input later. Thus, in order to detect the waveform of T3 representing the dark brightness of the display portion, the control unit 20 controls to select each scan line (step 308).

When the control unit 20 selects the line as 1, a waveform is output from the output data port connected to the scan line 1 and the display unit (step 310). That is, when the LED is turned on in the scan line 1, data is output to the data output port to which the LED is connected. As a result, a high output waveform is output from scan line 1 (step 312). Therefore, the light emitting diode having the T3 scan period in the scan line 1 is turned on at a dark brightness due to the high output signal.

In the process of selecting a line in the scan counter as described above, each line is selected from 1 to N so as to appear to emit light continuously in the display unit of the air conditioner.

When the line 1 is selected (steps 308 to 312) and when the line 2 is selected (steps 314 to 318), when the line 3 is selected (steps 320 to 324) When the line N is selected (steps 326 to 330), the same process is performed.

After the scan counter set from 1 to N increases, if it is determined that a series of display unit lighting processes have been completed, the control unit 20 initializes the scan counter to 0 (step 332). The initialized scan counter is returned.

When the brightness control of the display unit is set to dark, the scanning output control process of the display unit has been described.

Hereinafter, when the brightness control of the display unit is set to bright, the scan output control process of the display unit will be described.

When the user sets the brightness of the display unit to bright light in step 208, it is determined whether a T2 scan period for outputting a bright light waveform has elapsed (step 400). If the control unit 20 determines that the T2 scan period has not elapsed in step 400, it returns to an initial state (step 402). That is, the current output state is maintained as it is during the scan period T2. If the control unit 20 determines that the T2 scan period has elapsed in step 400, the control unit 20 controls the scan counter for designating the scan line to increase (step 404). Under the control of the controller 20, waveforms are output low at all scan line output ports (step 406). That is, it has a standby state to output a signal to be input later. Thus, in order to detect the waveform of T2 representing the bright brightness of the display portion, the control unit 20 controls to select each scan line (step 408).

When the control unit 20 selects the line as 1, a waveform is output from the output data port connected to the scan line 1 and the display unit (step 410). That is, when the LED is turned on in the scan line 1, data is output to the data output port to which the LED is connected. As a result, a high output waveform is output from scan line 1 (step 412). Therefore, the light emitting diode having the T2 scan period in the scan line 1 is turned on with bright brightness due to the high output signal.

In the process of selecting a line in the scan counter as described above, each line is repeated from 1 to N so that the light emitting diode in the display unit of the air conditioner continuously emits light. .

When the line 1 is selected (steps 408 to 412) and when the line 2 is selected (steps 414 to 418), when the line 3 is selected (steps 420 to 424) When the line N is selected (steps 426 to 430), the same process is performed.

After the scan counter set from 1 to N increases, if it is determined that a series of display unit lighting processes have ended, the control unit 20 initializes the scan counter to 0 (step 432). The initialized scan counter is returned.

As described above, the present invention has the technical idea that the brightness of the display unit (LED) of the air conditioner can be controlled by inputting brightness control by the main body or the remote controller and controlling the internal scan output waveform. And within the scope of the technical idea of the present invention, of course, various modifications are possible to those skilled in the art.

According to the present invention described above, the display unit of the conventional air conditioner is not adjusted brightness, it can be seen that the user can adjust the brightness of the display unit dark or bright by the display unit brightness control method of the air conditioner according to the present invention. .

Therefore, the present invention has a feature that can adjust the brightness of the display unit darker or brighter than the same product. Therefore, the user can adjust the brightness according to the user's convenience at the time of bedtime or the user's convenience, thereby providing convenience to the user, and consequently, increasing customer satisfaction with the product.

Claims (5)

A count signal is transmitted through a scan line, and a main body and a remote controller of a separate air conditioner equipped with a display unit which are turned on when a lighting signal is input through a data line are provided. Inputting a brightness control signal to a main body or a remote controller of the separate air conditioner; Determining whether the signal is set to dark or bright according to the input of the brightness control signal; And adjusting the brightness of the display unit according to the signal to light or dark according to the determination. The method of claim 1, Selecting the brightness control signal of the display unit as dark; Recognizing a dark scan period (T3) according to the selected signal; Incrementing a counter of the scan line; And outputting a signal to the output data port of the scan line according to the incremented counter value during the selected scan period. The method of claim 2, The display unit brightness control method of the air conditioner, characterized in that the display unit continuously emits light as the counter of the scan line increases. The method of claim 1, Selecting the brightness control signal of the display unit as bright; Recognizing a bright scan period (T2) according to the selected signal; Incrementing a counter of the scan line; And outputting a signal to the output data port of the scan line according to the incremented counter value during the selected scan period. The method of claim 4, wherein The display unit brightness control method of the air conditioner, characterized in that the display unit continuously emits light as the counter of the scan line increases.