KR19980056947A - How to set user brightness of LED in VSI system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode brightness control method used in a VSI system and the like, and in the related art, the light emitting diode control used in such a system is fixed in a state arbitrarily set by the manufacturer. The inability to adjust the brightness was a problem in ensuring the optimal environment for the use of indicators in these systems.

The present invention is to solve the problems as described above, the system outputs an OSD screen related to the light emitting diode control if there is a light emitting diode control key input, and if the + key input for adjusting the brightness of the user any set value Increasing the luminance from the current value by as much as possible, decreasing the luminance from the current value when the user's -key input is present, and registering the current value in the memory when the user has the brightness release key input. The present invention provides a light emitting diode user brightness setting method in a VSI system performed by the brightness control control program 100.

Description

How to set user brightness of LED in VSI system

The present invention relates to a light emitting diode brightness control means used in a VSI system, etc., in particular by allowing the user to arbitrarily set and use with the OSD screen to match the illumination of the light emitting diode used in such a system It is to more actively expect good utilization of such a light emitting diode of such a system.

Various types of light emitting diodes are known as indicators, but the conventional VSI system related to the use of light emitting diodes is illustrated as shown in FIG. 1.

A tuner 202 for receiving a regular broadcast signal from an antenna of a BS system and performing channel tuning; A timer unit 203 for providing time memory in various reservation modes and the like and time data through the display unit 204; A display unit 204 such as a digitron for displaying and processing various data provided from the timer unit 203 is included.

In addition, the system includes a video processor 205 for processing a signal reproduced from a deck unit or the like and a signal provided from an external video source; An servo unit 208 for controlling an audio unit 207 for processing an audio signal, a reel motor RL for driving a deck mechanism on the system deck side, a loading motor LM, a capstan motor CM, and the like; A remote control receiver 209; The mechanism switch part 206 connected to the operation switch part 210, the reel motor RL, the loading motor LM, the pinch solenoid PS, the brake solenoid BS, etc. on the set side key part side is included.

The system also includes a condensation sensor, a CST lamp (CL), a CST switch (CS), an end sensor (ES), a start sensor (SS), a record safety switch (RSS), a counter memory (CM), and an after loading switch (ALS). ), A sensor unit 211 to which an unloading switch US, a drum F / F switch DFF, a reel pulse generator RFG, and the like are connected; It consists of the microcomputer 201 of system control.

In the conventional system, the display unit 203 performs a function display by the light emitting diodes D1 to D6 as shown in FIG. 2, and the light emitting diodes D1 to D6 are multiple output ports of the microcomputer 201. Light emitting diodes (D1 to D6) are connected to (P1-P6) so that PLAY, STOP, CUE, REVERSE, SLOW, and SLOW STILL) function display.

In addition, in the above system, the driving of these light emitting diodes D1 to D6 causes the microcomputer 201 to output a control signal of a logic one level for controlling the ON operation of the light emitting diodes D1 to D6, and otherwise opens. In the case of the light emitting diode driving circuit, the light emitting diode driving circuit of FIG. 1A is configured.

Here, the cathode terminals of the light emitting diodes D1 to D6 are commonly tied to the ground terminal, and the anode terminals are connected to the first to sixth output ports P1 of the microcomputer 201 through respective resistors R1 to R6. And a plurality of light emitting diodes D1-D6 connected to -P6 to display the operation state of the device currently being progressed while the corresponding light emitting diode is turned on according to a logic high level signal of the microcomputer 201. Was to be done.

Also, in such a system, when the user presses the PLAY button of VSI, the microcomputer 2011 outputs a control signal of logic high level H to the first output port P1 to output the first light emitting diode D1. ).

When the STOP button is pressed, the microcomputer 1 maintains or opens the first output port P1 at a logic low level L so that the first LED D1 is blocked. The second light emitting diode D2 is operated by outputting a control signal having a logic high level H to the second output port P2.

In the same way, the microcomputer 201 uses the CUE button, the REV button, the SLOW button, the STILL button, and the like according to the current operating state. Each of the light emitting diodes is turned on to control each light emitting operation.

Here, each of the resistors R1-R6 is used for the purpose of protecting the output ports P1-P6 of the microcomputer 1 and achieving maximum brightness when the light emitting diodes are operated.

For example, the maximum brightness condition of a light emitting diode generally used is about 10-15 milliamperes [mA], so the logic high level (H) voltage of the output port (P1-P6) of the microcomputer 1 is 5 volts. If [V], the resistance value that the resistors R1-R6 may have is fixed at about 330-500 ohm [Ω].

However, the brightness of the conventional light emitting diodes is that the microcomputer controlling the driving thereof generates a logic 1 or 0 output from the output port to turn on / off the light emitting diodes. Since it is fixedly set by the values of R1-R6), there is a problem in that the luminance cannot be set in consideration of the ambient brightness in which the set is placed.

For example, when the brightness around the set is bright, the brightness of the light-emitting diodes must be maintained to be relatively strong to perform its display function. When the brightness around the set is dark, the display discrimination power is reduced. Will not degrade.

Nevertheless, in such a set, a means for adjusting a brightness of a light emitting diode through a remote control transmitter or the like is not desired in the conventional set, which is not preferable.

An object of the present invention has been created to solve the above problems, which in particular allows the user to arbitrarily set the brightness of the light emitting diodes installed in the set while watching the OS screen of the remote control transmitter and the system such a set It is to be expected to use active light emitting diodes.

In particular, the present invention enables the system to output the OS screen related to the light emitting diode control if there is a light emitting diode control key input, and if there is a + key input for adjusting the brightness of the user, Increasing the luminance from the value, and reducing the luminance from the current value when the user's-key input, and registering the current value in the memory when the user's brightness release key input, the user In the VSI system performed by the control processing program, the light emitting diode user brightness setting method is characterized.

Hereinafter, more specific features of the present invention will be understood as described in more detail with reference to the accompanying drawings.

1 is a circuit block diagram of a typical VCR (Video Cassette Recorder) system

FIG. 2 is a circuit diagram illustrating a light emitting diode driving circuit using a microcomputer in FIG. 1.

3 is a system circuit block diagram according to the present invention.

4 is a light emitting diode control circuit diagram according to the control of the PWM (PWM) of the present invention

5 is an embodiment of a user luminance setting control processing program according to the present invention;

* Explanation of symbols for main parts of the drawings

11. Remote control transmitter 12. Remote control receiver

13. Microcomputer 14. Display

15. OSD 100. User luminance setting control processing program

3 illustrates a system circuit block related to the present invention.

Here, a remote controller transmitter 11 capable of inputting an LED control key for allowing the user to arbitrarily adjust the brightness of the LED, a remote controller receiver 12 for receiving a control command transmitted from the remote controller 11, and the remote controller A microcomputer that decodes a key input value of the receiver 12 and outputs an OSD screen related to light emitting diode adjustment when there is a light emitting diode adjustment key input, and controls brightness adjustment such as +/- with respect to the current value in relation to the brightness brightness. (13), a display portion 14 of a light emitting diode whose brightness is controlled under the control of the microcomputer 13, an OS portion 15 for generating an OSD screen signal, and the like.

In addition, FIG. 4 shows the display unit 14 connected to the microcomputer 13 in more detail.

In this case, the microcomputer 13 includes a transistor 14b circuit connected to the feeder M signal port and performing a switching operation, and a light emitting diode element 14a connected to the output side of the transistor 14b. .

In addition, the system is provided with a user luminance control control processing program 100 as shown in FIG.

Here, the system checks whether there is a light emitting diode adjustment key input (step 101), and if so, outputs the OSD light emitting diode control screen (step 102).

Then, the user looks at the LED control screen and checks whether the user presses the + key for the current luminance control value (step 103), and checks if the + key adjustment is set if the key is pressed (step 104). The feed unit U value corresponding to the display unit 14 is provided to the display unit 14 (step 105).

After that, the value set on the screen is displayed with the OS indicator (step 106), and it is checked if there is an adjustment off key input (step 107), and the process ends.

In step 103, if it is not a + key input, it is checked whether the key is input (step 108). If it is a-key input, it is determined to go to step 104. Is stored in the memory (step 110), otherwise the process goes to step 103.

3 and 4, when the user presses the LED control key in the remote control transmitter 11 when necessary to adjust the LED light installed in the VSI set or the like, the remote control receiver 12 receives the same. Command data is transmitted to the microcomputer 13, and the microcomputer 13 transmits the OSD screen related to the LED control on the TV receiver screen according to the LED control command of the display unit 14 transmitted through the remote controller receiver 12. Outputs

At this time, the OS screen can be configured as shown in Table 1 below.

TABLE 1

Therefore, when the user moves the cursor on the screen ▼ by using the left / right keys provided in the remote control transmitter 11, the microcomputer 13 transmits the light of the light emitting diode element 14a of the display unit 14 to the FDM control. It will be controlled by.

In this case, when the microcomputer 13 changes the pulse width of the square wave frequency provided to the base input of the transistor 14b of the display unit 14, the light emitting diode elements 14a change the brightness of the light accordingly. Will be given.

Therefore, the user can easily change the light emitting diode brightness of the display unit 14 using the remote control transmitter 11 according to the ambient room brightness in which the set is placed. You can have it.

On the other hand, the above operation is performed by the microcomputer 13 together with the user brightness control control processing program 100 as shown in FIG. 5, which checks whether there is an LED control key input in the system, and if there is an OSD LED The adjustment screen is output (steps 101 and 102).

Thereafter, when the user looks at the LED control screen and checks whether the + key is pressed for the current luminance control value, and checks whether the + key adjustment is set when the + key is input, the display unit displays the feeder U value corresponding to the set value. (14) (Steps 103 to 105).

After that, display the value set on the screen with the OS indicator, and check if there is an adjustment off key input, and if it is not + key input at the above, check whether it is-key input, and if it is-key input, go to step 104 and brightness if not. It is checked whether there is a release key input, and if so, the current value is stored in the memory (steps 106 to 110).

As such, the present invention allows the user to arbitrarily adjust the brightness of LEDs for displaying various functions used in a VSI system using a remote control transmitter or the like, so that the visibility of the display device is optimal for the surrounding environment in which the set is placed. It can be improved well.

Claims (1)

In a VSI system including a light emitting diode that displays various functions, the system outputs an OSD screen related to light emitting diode control when there is a light emitting diode control key input, and optionally sets a + key input for brightness adjustment of a user. Increasing the luminance from the current value by the value, decreasing the luminance from the current value if there is a user's -key input, and registering the current value in the memory if the user has the brightness release key input. A method for setting a user brightness of a light emitting diode in a VSI system or the like performed by the user brightness control control program 100