Browse Prior Art Database

Lossy-Compressed Data Link

IP.com Disclosure Number: IPCOM000123035D
Original Publication Date: 1998-Apr-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 1 page(s) / 39K

Publishing Venue

IBM

Related People

Maruyama, T: AUTHOR [+2]

Abstract

Disclosed is a method for lossy-compressed digital data link between a host computer and a peripheral device.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Lossy-Compressed Data Link

        Disclosed is a method for lossy-compressed digital data link
between a host computer and a peripheral device.

        Conventional digital link of data processing equipments
is non-compressed or lossless-compressed to evade data loss on the
link.  Due to lower compression efficiency of lossless-compress
method, non-compressed or lossless-compressed link requires high band
width when data volume becomes large such as high resolution image.
This results cost increase of the link.  In case a peripheral device,
e.g. display device allows reasonable data loss, lossy-compressed
method is applicable for the data link from the host to the
peripheral device.  Lossy-compressed data link contributes to make
the virtual band width be higher because known lossy-compressed
method yields high  compression efficiency compared with
lossless-compress method. Assuming  (2) is original data, the data is
lossy-compressed (3) in a host PC or  workstation (1) and sent
through a digital link (4) to a peripheral device (5), e.g. projector
or display.  Received data is decompressed (6) in the peripheral
device into the data (7), which is different from  the original data
(2) by definition.