Patent Application
20060044218
This application claims the benefit of Taiwan application Serial No. 93125854, filed Aug. 27, 2004, the subject matter of which is incorporated herein by reference.
1. Field of the Invention
The invention relates in general to a display device, and more particularly to a display device capable of enhancing the display effect of an image.
2. Description of the Related Art
A conventional notebook computer achieves the object of enhancing the display effect by adjusting the graphic unit 122 to enhance the outputted video V. The enhanced items of display effect such as the edge enhancement enables a complete and clear frame of image to be displayed. The display effect can also be achieved by adjusting the Gamma curve to change the tone and contrast of the video V.
However, the colors of the image would be affected if the enhancement of display effect is achieved by adjusting the Gamma curve alone. For example, originally, the Gamma curve is adjusted for the video V to skew to red color so that the color of the skin looks pinkish. By doing so, other color of the image also skew to red color, causing the colors of the image unnatural. The graphic unit has only a few adjusting methods to enhance the display effect, so the quality of image display can not be further improved.
It is therefore an object of the invention to provide a display device capable of further enhancing the display effect of an image.
According to the object of the invention, a display device including a graphic unit, a memory, a video enhancing unit and a display monitor is provided. The graphic unit is for outputting a first video. The memory stores a number of predetermined parameter. The video enhancing unit, which receives the first video and selects a enhancing control parameter from a number of predetermined parameters, adjusts the first video, then outputs a second video. Lastly, the display monitor displays an image according to second video.
Other objects, features, and advantages of the invention will become apparent from the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings.
Referring to
The host 210 includes a CPU 212, a north bridge 214, a south bridge 216, a keyboard controller 218, a memory 220 and a graphic unit 222. The memory 220 can be an EEPROM for instance. The graphic unit 222 outputs a video V1 such as an LVDS video, a DVI video or a DSUB video for instance.
The video enhancing unit 240 receives the video V1 and an enhancing control parameter P, determines the desired video enhancing items according to the enhancing control parameter P, then adjusts the video V1 and outputs a video V2. The video enhancing unit 240 can provide several video enhancing items to enhance the video V1. The video enhancing items such as 3D color adjustment, edge enhancement, ACR white balance, FCT color tuning and contrast adjustment, gray level adjustment, brightness adjustment and sharpness adjustment and so forth.
The memory 220 stores a number of predetermined parameters respectively corresponding to various video enhancing items. The user can control via the keyboard, so that the keyboard controller 218 selects one or several predetermined parameters from the memory 220 to be outputted as the enhancing control parameter P. The video enhancing unit 240 receives the enhancing control parameter P the video V1 is adjusted accordingly to enhance the display effect. The present embodiment is exemplified by selecting two desired video enhancing items via the keyboard. However, the selection can be made via other man-machine interfaces. For example, the selection can be made on the monitor directly according to a program with a selection menu displayed on the monitor. The selection can also be made by setting one program to at least one predetermined parameter such that, when the program is executed, the corresponding predetermined parameter is automatically selected.
The video enhancing unit 240 includes a video receiver 242, a video enhancing chip 244 and a video transmitter 246. The video V1 can be an LVDS video, a DSUB video or a DVI video. The video receiver 242 converts the received video V1 into a first internal video of TTL format then outputs the first internal video accordingly. The video enhancing chip 244, after receiving first internal video, adjusts first internal video according to the enhancing control parameter P then outputs a second internal video. The second internal video can be a TTL format for instance. Then, the video transmitter 246 outputs a video V2 to drive the display monitor 250 according to the second internal video. The video V2 can be an LVDS video, a DSUB video, a DVI video, a composite video, or an S video.
Apart from adjusting the video V1 of entire image, the present embodiment can adjust only a particular region of the image or performs different adjustments on various regions of the image, for example a signal window region. Referring to
Besides, if the video enhancing unit 240 needs to use various enhancing control parameters to enhance the effect of the regions other than the region 310, the host 310 needs to transmit another enhancing control parameter P′ to the video enhancing unit 240 for the regions outside the region 310 to be enhanced. Then, the video enhancing unit 240 integrates the adjusted sub-videos as a video V2.
The present embodiment uses a video enhancing chip to enhance video effect instead of adjusting the Gamma curve alone, therefore achieving a variety of video enhancing effect. The item of edge enhancement enables the frame to be clearly and completely displayed, even the hair would look three-dimensional. The ACR white balance is an adjustment according to the characteristics of the display monitor 250, so that a better white balance effect is achieved. The FCT color tuning is capable of adjusting 6 individual colors without affecting other colors or the white balance, so the color appears to be more brightly colored. The contrast and brightness adjustment enables the objects to be clearly seen even in evening or dark scenery. The 3D color item deals with the depth of field, so that the 3D depth of field is vividly presented such as the clouds and the sky.
The display device disclosed in above embodiments of the invention enhances the quality of the video without using CPU resources, therefore achieving better operation efficiency.
While the invention has been described by way of example and in terms of a preferred embodiment, it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.
| Number | Date | Country | Kind |
|---|---|---|---|
| 93125854 | Aug 2004 | TW | national |
