HP Panter 2Tier manual Windows, DLLs for Jpeg Decoding

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Notes for Microsoft

Windows

The information in this appendix provides troubleshooting notes for installing and running Prolifics on Microsoft Windows.

DLLs for JPEG Decoding

WECJLIB.DLL is a dynamic link library which performs JPEG decoding. There are two versions of the DLL. The version that comes with Prolifics can be freely distributed. An enhanced version, which has added functionality, can be ordered from Express Compression Labs (ECL).

In the version of the DLL provided with Prolifics, images are rendered using ordered dithering. The enhanced version of the DLL supports Hi-Color and Tru-Color display hardware. With such hardware, dithering is not necessary and the best possible picture quality can be achieved. Two-pass color quantization and improved dithering are also supported in the enhanced version, which results in better picture quality on 256-color display devices.

To order single- and multiple-user licenses for the enhanced version of the DLL, email: ecl@netcom.com, or write:

Dr. Y. Shan

P.O. Box 367

Caulfield East VIC 3145, Australia

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