Digital View DVR-810, Руководство пользователя

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Overview Overview
9
Basic Information on Aspect Ratios
Your television screen has a certain physical
width and height which is technically referred to
as “aspect ratio”.
There are currently two variations for television
aspect ratios. These are 4:3 and 16:9.
Televisions with a 4:3 aspect ratio were primarily
designed for analog television where most
programs were broadcast in a 4:3 screen format.
With the introduction of DVDs and digital
terrestrial TV, the aspect ratio changed to meet
the requirements for a wider viewing format. This
wider viewing format typically increased the
size of picture that could be displayed in a video
frame. The offi cial widescreen format for digital
TV was therefore set as 16:9 which covered both
Standard and High Defi nition broadcasts.
The following diagrams illustrate the variations
that are possible from digital TV broadcasts using
both 4:3 and 16:9 screen formats. The DVR-810
allows for the choice of aspect ratios regardless
of the screen format.
Received digital TV broadcast in 4:3
format. DVR-810 aspect ratio set to
4:3
.
Received digital TV broadcast in 16:9
format. DVR-810 aspect ratio set to
4:3 .
Received digital TV broadcast in 16:9
format. DVR-810 aspect ratio set to
4:3
Letter-box
Television with 4:3 Screen Format
Received digital TV broadcast in 16:9
format. DVR-810 aspect ratio set to
16:9
Aspect Ratios