When buying a new modern TV is often a problem in the choice of a new model. Looking through the characteristics of digital technology is often on the list can be found the notion of progressive development. It has different standards. The question arises, what is it and what option is best to choose?
Progressive scanning or progressive scanning: what is it in TV
The content of the article
- Progressive scanning or progressive scanning: what is it in TV
- For what it is required in TV
- Benefits of progressive scan
- digital TV standards decomposition
What is it progressive development of the TV? Progressive Scan - is a special digital imaging system, which is displayed on the TV screen. Image forming rows passed one by one, due to which the transmitted image quality is improved.
This type of transmission of images is different from the classic interlace system. Furthermore, the progressive scanning is capable of transmitting up to 50 frames per second. Thus, the progressive scan delivers high fidelity image. Due to what is avoided comb effect.
Progressive scan has long gained much popularity in the telecommunications market and is widely used in the production of various models of TVs.
For what it is required in TV
There are two types of scanning - interlaced and progressive. In the first option the picture appears on the TV by two "half pictures." Initially displays the odd rows, after which the even. This type of system was present in older televisions embodiments. The image was clear, one not so rich. Interlace system is indicated in the characteristics of the index «i».
Progressive scan system displays the entire frame. All lines are consecutive. This helps to convey a clear, three-dimensional and realistic portrayal. When viewing a TV eyes are not strained, no discomfort and fatigue.
the number of transmission points in the second depends on the quality of the transmitted episodes. Sometimes the figures are indicated in Hertz. At present, different variants can be found from the frame 60 or more Hz.
Benefits of progressive scan
The new improved system has a number of advantages that make it the best among others. The main advantages include:
- The lack of visual image distortion.
- It does not require smoothing video.
- It can be scaled to maximum resolution.
- High clarity image transmission.
- It is not divided into two fields, so the image is transferred to complete.
Remember! Such a system does not tire the eyes, and makes watching TV a pleasant and relaxing.
digital TV standards decomposition
What is a progressive development of the TV? Standard decomposition, or as it is called the scanning format - a characteristic of the standard television broadcasting, which determines the number of lines transmitted to the TV screen.
Television unfolding used in televisions and computer monitors. By decomposition of standard digital television depends on clarity of image transfer to the screen.
By the standards of the expansion of digital TV for European options include 625/50, 525/60 by American parameters. In a first embodiment, the image displayed on the screen of 625 lines in the two fields. Their frequency is 50 Hz. In the American version of the same is indicated by 525 lines at 60 Hz per second.
Decomposition standards were still formed during the cathode ray tubes. Therefore, they left their mark even in the older models of appliances. They have a blanking region, precisely because of this, in each embodiment, their number can vary significantly.
Part lines generated horizontal part vertically. This allows you to display the total number of periods in the episode. According to the European standard of the possible 625 transmission lines remain operational only 576. Therefore, in the new modern computers can see the standard 576i expansion.
New LCD TV options are different image transmission quality and vividness of colors. They help to enjoy watching television without harm to health. Progressive scanning helps to improve the image and smooth the image, making it smoother and more precise.
