Avaya 4600 Series Anwendungshinweis PDF herunterladen (Seite 171)

Image Support

Issue 1 April 2005 171

JPEG Images

In addition to WBMP, the 4625SW’s Web browser supports renderings of JPEG images. JPEG

stands for the Joint Photographic Experts Group, and is a digital image file format designed for

maximal image compression. JPEG uses “lossy” compression in such a way that, when the

image is decompressed, the human eye does not find the loss too obvious. The amount of

compression is variable and the extent to which an image may be compressed without too

much degradation depends partly on the image and partly on its use. JPEG is designed for

compressing either full-color or gray-scale images of natural, real-world scenes. It works well on

photographs, naturalistic artwork, and similar material. JPEG does not work as well on lettering,

simple cartoons, or line drawings. JPEG handles only still images.

Image Rendering

The mime type for the WBMP is image/vnd.wap.wbmp. The mime type for the JPEG image is

as follows:

Without a mime type, the Web servers are not able to process JPEG files.

Due to the current browser implementation, no text is rendered on the same line as an image. If

a page author attempts to include both text and image on the same line, the image is rendered

first, followed by the text.

Extension Mime Type

jpe image/jpeg

jpeg image/jpeg

jpg image/jpeg

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Avaya 4600 Series Anwendungshinweis Seite 171