KR100595197B1 - Apparatus and Method for Protecting Light Source of The Display Device - Google Patents

Abstract

The present invention relates to a light source protection device and a method of a video device to effectively manage the use of the lamp in the imaging device having a lamp to further extend the service life of the lamp, in the imaging device having a light source, Turning on the light source and outputting video and audio according to a system on command of a user; Determining whether a system control command is input from a user if a light source protection function is currently set; In addition, if the user does not have a system control command for a preset time, the method includes entering the light source protection mode. Therefore, when the user does not operate the system for a predetermined time, the lamp may be turned off to prevent unnecessary use of the lamp.

Video equipment / light source / lamp

Description

Apparatus and Method for Protecting Light Source of The Display Device}

1 is a block diagram showing a light source protection device of an imaging apparatus according to the present invention

2 is a view showing a user setting screen for setting the light source protection mode of the present invention.

3 is a flowchart illustrating a light source protection method of an imaging apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

10: signal input unit 20: signal processing unit

30: speaker 40: display unit

50: lamp 60: lamp drive unit

70: control unit

The present invention relates to an imaging apparatus, and more particularly, to a light source protection method in an imaging apparatus using a light source.

At present, various display devices have been developed with new flat panel display modules (CRTs) according to the development of electronic technologies, starting with the CRT (Cathode Ray Tube).

In addition, due to the limitations on the screen size of existing TVs, active development and launch of large screens and ultra-thin displays has led to the development of projection display systems, while CRT (Cathode Ray Tube), Liquid Crystal Display (LCD) and LCoS ( The spread of projectors and projection imaging devices using display elements such as Liquid Crystal on Silicon (DLP) or Digital Light Processing (DLP) is rapidly increasing.

Here, the liquid crystal display (LCD), which is one of the flat panel display devices, has a better visibility than the cathode ray tube (CRT) and has a smaller average heat dissipation than the CRT having the same screen size. Along with Plasma Display Panel (FED) and Field Emission Display (FED), it has recently been in the spotlight as a next-generation display device such as a monitor of a mobile phone, a computer, or a television.

The LCD displays an image by generating a contrast by injecting a liquid crystal material, which is an intermediate material between a solid and a liquid, between two thin glass plates that have been specially treated and changing the arrangement of liquid crystal molecules by a voltage difference between electrodes on the upper and lower glass plates. Having an operating principle, a panel on which a character or an image is displayed does not emit light by itself, so that a light source is required to visually recognize the display content.

In detail, the LCD uses light of a back light light source that is turned on and off by the LCD cell. Because light has waves in a certain direction, when these waves reach the filter vertically, the light cannot pass through, and only when they reach horizontally. LCD arrays the liquid crystal elements in a certain direction by an electric field, and in this case, an image is realized by selectively passing light having a wave in a certain direction.

That is, due to the molecular structure, the liquid crystals are linearly arranged by the electric field, and, due to the mechanical properties, the liquid crystals may be rotated in units of 90 degrees between layers. This 90 degree unit rotation array is called TN (Twisted Nematic), 270 degree unit rotation array is called STN (Super Twisted Nematic). When an electric field is applied to a rod-shaped liquid crystal with two layers in between, the amount of light passing through the liquid crystal is rearranged according to the direction of the electric field.

In addition, the imaging device using the DLP (Digital Lighting Processing) method uses a digital device that determines the blocking and opening of light through a circuit board for the light reflected on the surface of many fine digital micro-mirror device (DMD) devices. The reflection angle is adjusted according to the signal to realize the image.

The DLP imager can completely reproduce the original image because there is no noise or image quality deterioration when the digital signal is converted to analog and does not correct different characteristics for each device.

Therefore, it is recognized as a complete display device that realizes high brightness and high-definition image with high light utilization efficiency because it uses mirror reflection principle rather than using a transmission method such as LCD, and has excellent reliability and durability.

In addition, the response speed of the device is faster than that of LCD and PDP methods, so that the moving picture can be reproduced more smoothly and flexibly. In addition, the wide viewing angle can accommodate a large number of viewers, and because it is a simple method that is not affected by geomagnetism at all, it is easy to adjust and is suitable for both front and rear projection applications.

That is, the LCD or DLP imaging apparatus uses a lamp as a light source and can implement an image only when the lamp is turned on.

Display products using the above-described lamps have the following problems.

First, since lamps are consumables due to device characteristics, the brightness decreases as the lamp is used for a long time. When the lamp reaches the manufacturer's warranty period, the brightness of the lamp drops to less than half of the initial brightness.

Second, when the brightness of the lamp is low, the user has to change the lamp in order to enjoy the best screen.

Third, even if the user does not watch the video device directly, the lamp has been kept on, which causes the lamp to be shortened.

Accordingly, the present invention has been made to solve the above problems, the light source protection device of the imaging device to effectively manage the use of the lamp in the imaging device having a lamp to extend the use of the lamp more and its The purpose is to provide a method.

A light source protection device of a video device according to the present invention for achieving the above object is a signal input unit for receiving a video / audio signal, a signal for processing the video / audio signal input through the signal input unit as an outputable signal A processor for outputting an audio signal processed by the signal processor, a display unit for outputting an image signal processed by the signal processor, a light source for generating light for realizing an image on the display unit, and driving the light source It includes a light source driver, a control unit for turning on the light source when outputting the image, and controls to enter the light source protection mode when there is no system control command by the user for a preset time.

In addition, the method for protecting a light source of an imaging apparatus according to the present invention for achieving the above object, in the imaging device having a light source, according to the user's system on command (On) to turn on the light source (On) and the image and Outputting voice; Determining whether a system control command is input from a user if a light source protection function is currently set; And, if there is no system control command for a predetermined time set by the user, including the step of entering the light source protection mode is characterized.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Referring to the accompanying drawings, a preferred embodiment of a light source protection device and a method of an image device according to the present invention will be described.

First, the light source protection apparatus of the imaging apparatus according to the present invention, as shown in Figure 1, the signal input unit 10 for receiving the video / audio signal, the video / audio signal input through the signal input unit 10 A signal processor 20 for processing an outputable signal, a speaker 30 for outputting a voice signal processed by the signal processor 20, and a display unit 40 for outputting an image signal processed by the signal processor 20. ), A lamp 50 for generating light to implement an image on the display unit 40, a lamp driver 60 for driving the lamp 50, and the lamp 50 is turned on when an image is output. And the controller 70 for controlling the lamp driver 60 to enter the lamp protection mode and to turn off the lamp 50 when there is no system control command by the user for a preset time.

The imaging apparatus according to the present invention is an imaging apparatus using display elements such as an LCD and a DLP that require a light source such as a lamp 50 when the image is implemented on the display unit 40.

When the system on command is input from the user, the imaging apparatus according to the present invention configured as described above recognizes this from the controller 70 and outputs control signals to the signal input unit 10 and the signal processor 20, respectively.

Here, the signal input unit 10 receives and outputs a video / audio signal that the user wants to watch under the control of the controller 70.

The signal processor 20 receives the video / audio signal output from the signal input unit 10 and processes the signal into an outputable signal. The audio signal processed through the signal processor 20 is output through the speaker 30 and the video signal is implemented through the display unit 40.

In this case, the controller 70 turns on the back light lamp 50 by controlling the lamp driver 60 when an image is output.

In addition, the display unit 40 may implement an image on a screen using light generated by the lamp 50.

On the other hand, the controller 70 controls the lamp driver 60 to enter the lamp protection mode and turn off the lamp 50 when no system operation command is input from the user for a preset time.

That is, the lamp driver 60 controls the driving of the lamp 50 on / off under the control of the controller 70.

Hereinafter, the light source protection method of the imaging apparatus according to the present invention will be described in detail.

First, the user sets the lamp protection function using the system menu of the video device.

As shown in FIG. 2, after the user executes a menu corresponding to the 'lamp protection function', the user may turn off the lamp protection function or set a time until entering the lamp protection mode during the lamp protection operation.

For example, the menu corresponding to the 'lamp protection function' is composed of 'Off', '30 minutes', '1 hour', '2 hours', and' 3 hours' items. You can turn off the protection function or select the set time.

In the state in which the lamp protection function is set to the desired environment through the above-described process, when the user turns on the system, the lamp 50 is turned on and the video and audio are output (S10 and S11).

Then, the operation setting state of the current lamp protection function is determined (S20).

That is, it is determined whether the lamp protection function is turned off or whether a specific set time is selected.

If the lamp protection function is turned off, the determination result 20 continuously maintains the on state of the lamp 50 and outputs an image and audio (S21).

On the other hand, in the determination result (S20), when the lamp protection function is set to the operation setting state in which a specific set time is selected, the timer in the controller 70 is initialized and the timer is set to the set time selected by the user (S30). .

At this time, the timer is set to the set time selected by the user to start the count.

Next, it is determined whether a key command, that is, a system control command, is input from the user (S31).

In operation S32, it is determined whether a state without a control command has elapsed from a user set time set in the timer, that is, a count time of the timer reaches the set time.

As a result of the determination (S32), if the state without a control command from the user does not pass the set time set in the timer (S33) is maintained in the on state.

On the other hand, when the determination result (S32), when the state without the control command from the user reaches the set time set in the timer after the time set by the user enters the lamp protection mode by turning off the lamp 50. (S40).

Therefore, when there is no system control command from the user during the setting time selected by the user on the menu screen (Fig. 2) of the lamp protection function, the device operates in the lamp protection mode.

In addition, if a system control command is input from the user before reaching the time set in the timer, that is, before the time set by the user, the timer is initialized and the user resets the timer to the set time.

In operation S41, it is determined whether a system control command is input from a user in the protection mode state of the lamp 50.

As a result of the determination (S41), when a system control command is input from the user in the lamp protection mode state, the lamp 50 is turned on again to release the lamp protection mode (S42) and at the same time, the timer returns to step S30. Initialize

The present invention prevents unnecessary use of the lamp by entering the lamp protection mode when the user control command is not input during the set time in the video device using the lamp.

As described above, the light source protection apparatus and method of the imaging apparatus according to the present invention can prevent unnecessary use of the lamp by turning off the lamp when the user does not operate the system for a set time in the display product requiring the light source. That is, there is an advantage that can effectively extend the service life of the lamp by effectively managing the use of the lamp.

In addition, even when the video device is on, the user can operate the lamp protection mode to turn off the lamp when not watching, thereby consequently extending the replacement time of the lamp and thus reducing the cost.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (6)

A signal input unit for receiving a video / audio signal, A signal processor for processing the video / audio signal input through the signal input unit as an outputable signal; A speaker for outputting a voice signal processed by the signal processor, A display unit for outputting an image signal processed by the signal processor; A light source generating light to implement an image on the display unit; A light source driver for driving the light source, When the image processed by the signal processing unit outputs the image to the display unit, the light source is turned on and the user is set among a plurality of setting times that can be set while the light source protection function is set during the image output. And a controller for controlling to turn off the light source temporarily by entering a light source protection mode for protecting the life of the light source when there is no system control command from the user for a preset time. Light source protection device. The method of claim 1, The control unit And a light source driver to control the light source to be turned off if there is no system control command by the user for a preset time. In an imaging device having a light source, Turning on the light source and outputting video and audio according to a system on command of a user; Determining whether a system control command is input from a user if a light source protection function is currently set; And, The image apparatus, if there is no input of the system control command from the user for a preset time set by the user, among the plurality of setting times settable by the apparatus while the light source protection function is set during the image output from the image apparatus. And entering a light source protection mode in which the light source is temporarily turned off in order to protect the life of the light source provided in the device. The method of claim 3, wherein The light source protection mode is And temporarily turning off the light source. The method of claim 3, wherein If there is no system control command for a preset time, the user enters the light source protection mode. Determining whether a system control command is input from a user for a preset time; Maintaining the on state of the light source and initializing the timer when a system control command is input from the user within the set time; Turning off the light source if a system control command is not input by the user during the set time period. The method of claim 5, And turning on the light source again and initializing the timer when a system control command is input by a user while the light source is turned off.

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