Overscan on the monitor - what is it? Understanding Monitor Features

Overscan translated from English in simple words means the image goes beyond the boundaries of the monitor. That is, on the TV or monitor screen, the image is broadcast either with distortion, or cropped around the edges. This is due to the fact that since the release of the first TV, the principle of video transmission has changed very often.

REFERENCE! In the manufacture of old models of TV receivers, manufacturers simply did not know exactly where the edges of the picture should be due to problems with industrial tolerances that existed at that time.

The work of modern TVs is based on the technology of fixing video signal elements. Thanks to this, the picture is obtained without distortion.

The output of the image beyond the boundaries is necessary in order to mask the distortions of the video signal and to create a certain blanking margin at the borders of the frames. Also, the reason for the existence and application of this function is the so-called "swimming effect" - this is a fluctuation in the frame size due to the brightness of the transmitted image. This effect made it very difficult to standardize the transmitted image.

With the advent of video recording and VCRs, overscan began to be used to mask video signal defects that resulted from changing the heads of the video device. These defects were inherent in absolutely all models of video players and were manifested in the form of distortion of the upper boundary of the transmitted picture.

The presence of the overscan function forced manufacturers to establish clear boundaries for the usable area of the broadcast picture. As a rule, TVs that were used for home viewing did not show this area. While professional monitors display the entire picture in full. This is required to fully evaluate the scene.

REFERENCE! The development of digital technology has made it possible to prevent fluctuations in the picture.

Meanwhile, for television, the overscan function is still necessary, as there are TV models that crop the edges. It is also required to eliminate defects when watching a home video that has an analog signal.

The LCD screen consists of pixels that have a static position. Due to this, they can broadcast the entire picture of the pillars, including crashes.

It is the point-to-point mode that provides maximum picture quality.

If a signal having a resolution of 16: 9 is transmitted to the screen, then approximately 3% of the original image size is cut off by an overscan. This is mainly due to the analog signal and the TVs have a certain number of remnants of the past.

In order to disable the overscan function, you will need a special AVS HD Rec disc. 709

IMPORTANT! If there is no disk, then you can find and download its image on the Internet.

Step-by-step overscan shutdown instruction:

You need to take a disk and run it;
In the menu that appears, you need to find the item "Basic settings";
In the submenu that opens, select the term "Sharpness & Overscreen";
In the TV interface, you need to find the image settings and set the value to 16: 9 or automatically;
Next, you need to find and turn off the "Overscan" function;
You need to make settings in such a way that a strip of white appears along the edges of the image, as well as the inscription "Overscan 0%";
If the manipulations performed do not help, then most likely the image size changes in its source. To do this, you need to check the settings in the video player or the video broadcast settings in the installed drivers on the video card;