Image Processing Reference
In-Depth Information
Table 39-1 Compression-Related Technology Timeline
Year
Milestone
1982
Compact disks (CDs) introduced, which deliver 44.1 KHz samples at a bit rate of
705 Kbps per channel.
1990
The date is approximate but H.261 shows up around here somewhere.
1991
QuickTime 1.0 introduced.
1992
MPEG-1 delivers video on the PC, Internet, and CD format disks.
QuickTime released for Windows.
1993
MPEG-1 Audio layer 3 (MP3) standard. Usable quality attainable at 80 Kbps per
channel.
During this year the ITU started work on H.26P. That later became H.263.
They also initiated work on H.26L. That evolved into H.264.
MPEG support in QuickTime demonstrated.
Experimental work and field trials in the United Kingdom by Apple, Oracle, and
British Telecom on computer-based set-top boxes and the distribution of TV via
cable networks.
1994
QuickTime 2.0 and QTVR introduced for Mac OS and Windows.
H.262 and MPEG-2 appear.
1995
H.263 developed for videoconferencing applications.
1997
MPEG-2 Advanced Audio Coding (AAC). Typically operates at about 64 Kbps per
channel.
The ITU formed the Video Content Experts Group (VCEG) this year.
QuickTime 3.0 introduces many new features.
QuickTime 4.0 introduces an interactive architecture that is later exploited by
LiveStage.
1998
The ITU issues a call for proposals for technology to be included in H.26L.
1999
MPEG-4 Part 2 video being discussed.
2001
MPEG calls for proposals to incorporate compression technologies in MPEG-4
video. ITU responds.
Everyone realizes it would be silly to carry on independently and the Joint Video
Team (JVT) is established. This is a profound example of what other groups
working on a variety of standards should look at and consider doing.
2002
AAC
demonstrated with Spectral Band Replication and usable quality within
56K modem bit rate.
Meanwhile, the JVT group freezes the technical specification for H.264 late this
year.
Envivio and iVAST show prototype encoders and MPEG-4 systems-layer
products.
+
Continued
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