KR100698301B1 - Display device and method for optimizing resolution thereof - Google Patents

Abstract

According to the present invention, the video device detects both the original signal format and the signal format of the sub video device outputted to the video device by adjusting the resolution by receiving the original signal, thereby optimizing the video device and the resolution thereof. It is about a method. The present invention includes requesting resolution information from a sub-imager to a video device including a display module unit, communicating with the scaler of the sub-picture device with an optimal resolution information by the scaler of the video device; Detecting an optimal resolution information and performing scaling on the original signal of the video signal inputted to the sub-imager; and displaying the image after performing the scaled video signal after necessary scaling according to the resolution of the display module unit. It provides a method for optimizing the resolution in an imaging device comprising the step of. Therefore, according to the present invention, the image signal can be scaled and displayed at an optimal resolution.

resolution

Description

Display device and method for optimizing resolution

1 is a block diagram for explaining a video device according to the prior art

2 is a block diagram illustrating a video device according to a first embodiment of the present invention.

3 is a block diagram illustrating a video device according to a second embodiment of the present invention.

4 is a flowchart for describing a method of optimizing a resolution in an imaging apparatus according to a first embodiment of the present invention.

5 is a flowchart for describing a resolution optimization method in an imaging apparatus according to a second embodiment of the present invention.

* Explanation of symbols for main parts of drawings *

10: sub device 11: sub device scaler

20: video device 21: video device scaler

22: memory unit 30: display module

The present invention relates to a video device and a method for optimizing the resolution thereof. In particular, the video device detects both an original signal format and a signal format of a sub video device that receives an original signal and adjusts the resolution to be output to the video device. The present invention relates to a video device and a resolution optimization method thereof that can be selected by the device.

Broadcasting is a mass media that targets an unspecified number, which is advantageous because it can be compressed like computer data compression because all elements (video, audio, data) are treated digitally.

After color TV broadcasting, stereo sound, remote control device, subtitle broadcasting, data broadcasting, etc. have adopted some digital technologies. In the 90's, computer and network technologies have been spreading more rapidly, so that the broadcasting field can realize high-definition and multifunctional TV. Digital TV was pursued as a video device.

In the case of digital TV (hereinafter, DTV), one program of HDTV level and three or more programs of SDTV level can be transmitted to one channel, and digital signal transmission and processing make it possible to enjoy a much cleaner screen. The ghost phenomenon can be solved on its own, and radio waves reflected by obstacles can be solved on their own.

Looking at the status of domestic broadcasting, after the pilot broadcast in 2000, the metropolitan area is performing the main broadcast in 2002, the metropolitan city is scheduled for 2004, and will complete the conversion of DTV broadcasting by 2010.

Recently, DTV has been implemented using LCD, PDP or OLED (ORGANIC LIGHT EMITTING DIODES) modules in CRT or projection TV. Such LCDs, PDPs, and OLEDs have the advantage of being considerably thinner than CRTs or projection methods.

Among them, the LCD module is largely composed of a panel, a backlight, and a driving chip.

LCD (Liquid Crystal Display) panel literally means a display made of liquid crystal, which cannot emit light by itself. Therefore, the backlight unit is used for this purpose.

Fluorescent lamps are commonly used as backlight units of LCD monitors.

In order to drive the backlight unit of the LCD module, a DC-AC inverter is used. In addition, the driving chip is a driving circuit chip for driving the LCD monitor with a driver IC.

PDP obtains light emission through plasma generation by discharge. It can be said to be a kind of fine color fluorescent lamp combination.

The emission principle of the AC PDP is that a pulse-like potential difference is formed between the X electrode and the Y electrode to cause discharge, and the RGB phosphors are excited by vacuum ultraviolet rays generated during the discharge process, and we see a combination of the lights. The discharge at this time will be influenced by various parameters, but it is particularly related to the type and pressure of the discharge gas inside the PDP and the secondary electron emission characteristics of the MgO protective film. The discharge depends on the structure and driving conditions of the electrode.

The plasma of the PDP module refers to a state in which positive charges (ions) and negative charges (electrons) are mixed in about the same amount, maintaining electrical neutrality while posing close to free particles. In short, it is a mixture of ions and electrons.

When a strong voltage is applied to the positive and negative electrodes in a vacuum state, the gas inside is activated and then returns to its original state, which is stable over time. .

OLEDs can be divided into PM (Passive Matrix) and AM (Active Matrix) according to their structure, and AM is used as a large area high resolution. OLED, also called organic ELD (Electro Luminescence Display), is a self-luminous display that electrically excites fluorescent organic compounds to emit light, and can be driven at a low voltage and has advantages such as thinness. In addition, it is attracting attention as a next-generation display candidate that can solve the shortcomings of LCDs such as wide viewing angle and fast response speed.

Organic EL displays are attracting attention as next-generation flat panel displays because they can have the same or higher image quality than TFT LCDs in the medium size or lower than other displays, and are advantageous in price competition due to the simple manufacturing process.

In addition, such image display devices are gradually enlarged, and now, in the case of LCDs and PDPs, products of 30 to 40 inches have become inexpensive enough that the price range is almost popular. have.

In the case of PDPs, LCD TVs, or monitors, the resolution depends on the inch of the panel.

There are also various formats for signals.

Therefore, in order to optimally view the original signal without distortion, the resolution of the original signal and the TV or monitor should be the closest match.

For example, the resolution of the PDP 71 inch is 1920x1080, and the optimum signal is 1080I / P.

The PDP 50 / 60-inch resolution is 1366 x 768 and the optimal signal is 720P.

The optimum signal is 720P when the resolution of the PDP 42 inch is 1024x768, and the optimum signal is 480P when the resolution is 856x480.

At this time, every TV or monitor has an optimal resolution that can be best expressed by itself, and the resolution is automatically displayed without a remote controller or any key operation by communicating with TV and other sub display devices.

Hereinafter, an imaging apparatus according to the prior art will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a video device according to the prior art.

The video device according to the related art is composed of a scaler 21 and a memory 22.

In this case, the scaler 21 checks the resolution of the input video signal according to the resolution of the display module unit 30 and increases or decreases the resolution of the output video signal. For example, if the size of the display module unit 30 is 71 inches HD, but the resolution of the input video signal is 856 × 525, the resolution of the input video signal is raised to 1920 × 1080 for optimal display of 71 inches full HD.

The memory unit 22 stores the EDID (Extended Display Identification Data) of the display module unit 30. In other words, the memory 22 defines basic display variables and characteristics of the monitor, which is the display module 30. The display module unit 30 includes one of an LCD module, a PDP module, and an OLED module.

The sub-imager 10 includes a scaler 11. Here, the scaler 11 of the sub-imager 10 receives the original signal and scales it to the resolution of the display module unit 30 of the imager 20 to output the video signal. In this case, the sub-imager uses IIC communication. The scaler 11 of FIG. 10 reads the information of the display module 30 through communication with the memory 22 of the image device 20.

Such a sub image device 10 may be a set top box, a DVD player, a PC, or the like.

However, in the current video device, the resolution of the above example is not optimal, because the set-top box or DVD player also adjusts the resolution of the signal received by the video device such as TV or monitor. Therefore, a video device such as a TV or a monitor receives a video signal of the adjusted resolution from a sub-picture device such as a set-top box or a DVD player, not the original signal, and thus may not display the original signal at an optimal resolution.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to detect and optimize both an original signal format and a signal format of a sub-image apparatus that receives an original signal and adjusts its resolution and outputs it to an image apparatus. The present invention provides a video device and a method for optimizing its resolution so that the resolution can be selected in the video device.

In order to achieve the above object, the present invention provides a memory unit for storing optimal resolution information of a display module unit, a scale unit of a sub-imager for scaling and transmitting an input image signal according to an optimal resolution of the display module unit stored in the memory unit; And a scaler unit for scaling the resolution of the input image signal to an optimal resolution of the memory unit through direct communication of the apparatus.

The memory unit may include a nonvolatile memory, and includes EDID information of the display module unit.

The display module unit may be one of an LCD module, a PDP module, and an OLED module.

In addition, the scaler of the sub-imager may read the optimum resolution information through direct communication with the memory unit.

Preferably, the memory unit is the scaler internal memory.

When the memory unit is the scaler internal memory, it is preferable that the scaler unit of the video device reads the optimal resolution information of the internal memory and communicates with the scaler unit of the sub-imager.

In addition, the sub image device is preferably one of a set-top box, a DVD player, a personal computer.

In order to achieve the above object, the present invention provides a method for requesting resolution information from a sub imager to a video device including a display module unit, and a scaler and an optimal resolution information of the sub video device from a scaler of the video device. Performing a communication with respect to the control unit; detecting the optimal resolution information; scaling the original signal of the image signal input to the sub-image apparatus; and converting the scaled image signal to the resolution of the display module unit. Accordingly, the present invention provides a method for optimizing a resolution in an imaging apparatus, the method comprising: performing a necessary scaling and then displaying an image.

When the resolution information is requested from the sub-imager, the optimum resolution information of the display module unit is read from the scaler unit internal memory or an external memory unit and transmitted to the scaler unit of the sub-imager. desirable.

Transmitting a signal format of an original signal and a signal format of a sub-imager scaler when requesting resolution information from the scaler of the sub-imager; According to the signal format and the signal format of the sub-imager, it is preferable to transmit the optimal resolution information of the display module unit to the sub-imager.

When the optimal resolution information of the display module unit is transmitted, the scaler unit of the sub-imager compares whether the resolution of the original signal is higher than the resolution of the display module unit, and if the resolution of the original signal is equal to or higher than It is preferable to perform scaling to maintain the resolution of the original signal, and perform upward scaling when the resolution of the original signal is low.

According to an aspect of the present invention, there is provided a method of reading the optimal resolution information of a display module of a video device from a memory unit of a video device in a scaler of a sub video device. And performing scaling according to the optimal resolution information and transmitting the scaling to the scaler of the video device, and displaying after performing the scaling according to the display module in the video device scaler. Provides a method for optimizing the resolution in an imaging device.

Here, the scaler of the sub-imager leading the optimal resolution information detects the optimal resolution information of the display module unit, comparing the resolution of the original signal input to the sub-imager and the resolution of the display module unit; When the resolution of the original signal is equal to or higher than the resolution, it is preferable to perform scaling to maintain the resolution of the original signal, and to perform upward scaling when the resolution of the original signal is low.

Therefore, according to the present invention, the image signal can be displayed by scaling the original signal at the optimal resolution.

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.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

2 is a block diagram illustrating a video device according to a first embodiment of the present invention.

The imaging apparatus 20 according to the first embodiment of the present invention includes a scaler 21 and a memory 22.

Here, the scaler 21 checks the resolution of the input video signal according to the resolution of the display module unit 30 and increases or decreases the resolution of the output video signal. A control unit (not shown) for calculation is provided. It is built in. For example, if the size of the display module unit 30 is 71 inches HD, but the resolution of the input video signal is 856 × 525, the resolution of the input video signal is increased to 1920 × 1080 for optimal display of 71 inches full HD. The display module unit 30 includes one of an LCD module, a PDP module, and an OLED module.

The memory unit 22 includes a nonvolatile memory (eg, an EEPROM), and additionally stores optimal resolution information in addition to the EDID (Extended Display Identification Data) of the display module unit 30. In other words, the memory unit 22 stores the optimal resolution information of the display module unit together with basic display variables and characteristics of one of the LCD module, the PDP module, and the OLED module constituting the display module unit 30.

In addition, in the first exemplary embodiment of the present invention, the sub-imager (not shown) is read directly from the sub-imager 10 but is communicated with the scaler 21 of the imager 20 through the sub-imager ( 10) and the resolution information by direct communication between the scalers 11 and 21 of the imaging apparatus 20 is received. For reference, information of the display module unit 30 may include displayable resolution, horizontal, vertical frequency, and the like. Of course, the memory 22 may be used as the internal memory of the scaler 21.

More specifically, the sub imager 10 that supports various resolutions may include a DVD player, a set-top box, a personal computer, and the like.

In the case of a video device (for example, a TV or a monitor constituting a display module using one of an LCD module, a PDP module, and an OLED module) 20, assuming a 42-inch VGA (856 × 480) resolution, In the case of 20), the incoming input signal has the best resolution of 480P.

At this time, the original signal is input through the sub-imager 10. If the first signal received by the sub-imager 10 is 1080i, the imager 20 itself scales down the original signal from the sub-imager 10. Rather than accept a 480P input, it should accept a 720P or 1080i signal. The reason for this is that when the sub video device 10 receives the first 1080i signal and the scaling unit 11 of the sub video device 10 gives a resolution of 480P to the video device 20, the actual picture quality is deteriorated. This is because the scaler 21 of the image device 20 performs scaling once again in the state. The actual picture quality depends on the image processing capability of the scaler. Therefore, when the resolution of the original signal is higher than the resolution of the display unit of the video device, the scaler of the video device receives and processes the image data at the resolution of the original signal.

In consideration of such a case, the resolution of the original signal may be detected by direct communication between the sub-imager 10 and the scalers 11 and 21 of the imager 20 to scale the original signal to an optimal resolution.

3 is a block diagram illustrating a video device according to a second embodiment of the present invention.

The imaging apparatus 20 according to the second embodiment of the present invention also includes a scaler 21 and a memory 22.

In this case, the scaler 21 checks the resolution of the input video signal according to the resolution of the display module unit 30, and increases or decreases the resolution of the output video signal. For example, if the size of the display module unit 30 is 71 inches HD, but the resolution of the input video signal is 856 × 525, the resolution of the input video signal is increased to 1920 × 1080 for optimal display of 71 inches full HD. The display module unit 30 includes one of an LCD module, a PDP module, and an OLED module.

The memory unit 22 includes a nonvolatile memory (eg, an EEPROM), and additionally stores optimal resolution information in addition to the EDID (Extended Display Identification Data) of the display module unit 30. In other words, the memory unit 22 stores the optimal resolution information of the display module unit together with basic display variables and characteristics of one of the LCD module, the PDP module, and the OLED module constituting the display module unit 30.

In other words, in the second exemplary embodiment of the present invention, the resolution information stored in the memory unit 22 is directly read from the sub imager 10 using the IIC communication method, and the scaler 11 of the sub imager 10 is connected to the imager. The optimal resolution information is read out by the memory unit 22 at I20 by IIC communication. For reference, information of the display module unit 30 may include displayable resolution, horizontal, vertical frequency, and the like.

4 is a flowchart for describing a method of optimizing a resolution in an imaging apparatus according to a first embodiment of the present invention.

The resolution optimization method of an image device according to the present invention is a case in which the memory unit is a memory built in the scaler of the imager or communicates with the scaler of the imager, after the imager and the sub-imager are turned on (S10) (S20). In operation S30, it is determined whether the resolution information is requested from the sub-image apparatus.

If the resolution information 30 is requested, the resolution information between the scaler of each of the video apparatus and the sub image apparatus is directly communicated (S40). At this time, the scaler of the imager knows the signal format of the original signal and the signal format of the sub-imager, and the scaler of the sub-imager knows the resolution information of the display module.

Accordingly, the optimum resolution is detected (S50), and it is determined whether the resolution of the original signal in the sub-imager is higher than the resolution of the display module (S60).

As a result of the determination (S60), when the resolution of the original signal in the sub-imager is high or the same, the sub-scaler transmits the image signal to the imager while maintaining the resolution of the original signal (S70).

However, if the resolution of the original signal in the sub-imager is not high (S60), the original signal is transmitted to the imager after scaling up from the sub-imager (S80).

The video apparatus displays an image after performing necessary scaling on the transmitted video signal according to the resolution of the display module unit (S90).

5 is a flowchart for describing a method of optimizing a resolution in an imaging apparatus according to a second exemplary embodiment of the present invention.

In the method of optimizing the resolution of a video device according to the second embodiment of the present invention, the memory unit is configured separately from the scaler of the video device, and through the IIC communication of the scaler of the memory unit and the sub-picture device, the video device and the sub-image are performed. After the device is turned on (S100) (S110), the sub-imager reads the optimum resolution information of the display module stored in the memory unit (S120).

Accordingly, the optimum resolution is detected in the sub-imager (S130), and it is determined whether the resolution of the original signal in the sub-imager is higher than the resolution of the display module (S140).

As a result of determination (S140), if the resolution of the original signal in the sub-image apparatus is equal to or higher than that, the sub-scaler transmits the image signal to the image apparatus while maintaining the resolution of the original signal (S150).

However, if the resolution of the original signal in the sub-image apparatus is not high (S140), the original signal is transmitted to the video apparatus after scaling up from the sub-image apparatus (S160).

The video apparatus displays an image after performing necessary scaling on the transmitted video signal according to the resolution of the display module unit (S90).

In the video device and the resolution optimization method according to the present invention has an effect that can be displayed by scaling the original signal at the optimum resolution in the video device.

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 (13)

A memory unit of an image device for storing optimal resolution information of the display module unit; A scaler of a sub-imager for determining whether to scale by referring to optimal resolution information of the display module stored in the memory and performing scaling of the input image signal according to the result; A video device for determining whether to scale by referring to the resolution of the video signal input to the sub video device and the optimal resolution information of the display module unit, and to perform the scaling of the video signal output from the scaler of the sub video device according to the result. Imaging system comprising a scaler of the. The method of claim 1, And the memory unit comprises a nonvolatile memory, and includes EDID (Extended Display Identification Data) information of the display module unit. The method of claim 1, The display module unit is an imaging system, characterized in that one of the LCD module, PDP module and OLED module. The method of claim 1, And the scaler of the sub-imager reads the optimal resolution information through direct communication with the memory. The method of claim 1, And the memory unit is a scaler internal memory of the video device. The method of claim 5, And when the memory unit is an internal memory of the scaler of the video device, the scaler of the video device reads the optimal resolution information of the internal memory and communicates with the scaler of the sub-image device. The method of claim 1, The sub imager is one of a set-top box, a DVD player, a personal computer. Requesting resolution information from a sub image device to an image device including a display module unit; Communicating with the scaler of the sub-imager about the optimal resolution information by the scaler of the imager; Detecting the optimal resolution information and performing scaling on the original signal of the video signal input to the sub video device; And performing the necessary scaling according to the resolution of the scaled image signal according to the resolution of the display module unit, and displaying the image. The method of claim 8, When the resolution information is requested from the sub-imager, the optimum resolution information of the display module unit is read from the scaler unit internal memory or an external memory unit and transmitted to the scaler unit of the sub-imager. Resolution optimization method in video equipment. The method of claim 8, Transmitting a signal format of an original signal and a signal format of a scaler of the sub-imager when requesting resolution information from the scaler of the sub-imager; And the optimum resolution information of the display module unit is transmitted to the sub imager according to the signal format of the original signal and the signal format of the sub imager. The method of claim 10, When the optimal resolution information of the display module unit is transmitted, Comparing the scaler unit of the sub-imager with a resolution higher than that of the display module unit; If the resolution of the original signal is higher than or equal to the result of the comparison, the scaling of maintaining the resolution of the original signal is performed; Reading, by the scaler of the sub-imager, the optimal resolution information of the display module of the imager from the memory of the imager; Performing scaling according to the optimal resolution information by the scaler of the sub-imager and transmitting the scaling to the scaler of the imager; And performing display according to the display module by the imager scaler to display the imager scaler. The method of claim 12, Detecting the optimal resolution information of the display module unit by the scaler unit of the sub-image apparatus leading the optimal resolution information; Comparing the resolution of the original signal input to the sub imager with the resolution of the display module unit; If the resolution of the original signal is higher than or equal to the result of the comparison, the scaling of maintaining the resolution of the original signal is performed;

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