What is the Difference Between 1080p and 1080i?

The main difference between 1080p and 1080i lies in the way the images are displayed. Both resolutions can display 1920x1080 pixel images, but they use different display methods. The letters "i" and "p" refer to the display mode used: 1080i refers to "interlaced" and 1080p refers to "progressive scan".

• 1080i (Interlaced Scan): In an interlaced display, the image is displayed by illuminating odd and even pixel rows in an alternating fashion. This method is less efficient and can result in a lower image quality, especially for fast-moving images.
• 1080p (Progressive Scan): In a progressive display, each pixel is displayed in a single scan. This method provides a more efficient and higher-quality image, particularly for fast-moving images.

In terms of image quality, 1080p generally offers better image quality than 1080i. However, unless you have above-average eyesight, you might not be able to notice a significant difference between the two on smaller screens. Generally, you need a TV bigger than 42 inches to discern 1080i from 1080p.

Comparative Table: 1080p vs 1080i

Here is a table comparing the differences between 1080p and 1080i:

In general, 1080p is considered better than 1080i for most modern viewing experiences, especially for high-definition content like Blu-ray. Both 1080i and 1080p have the same resolution, but they differ in how the image is displayed. 1080i uses an interlaced scan, while 1080p uses a progressive scan. The progressive scan of 1080p eliminates the "combing" issue and creates a superior image compared to 1080i. However, the difference in picture quality is not easily noticeable on smaller screens.