In the late ‘70s I conducted an exhaustive study of image display
technology and products. The results are summarized in an SPIE paper .
I have an archive comprising product literature from all the display companies
of this time. These products were the earliest examples of real-time display
with zoom, color mapping, etc.
In the early ‘80s I implemented pipeline processor and feedback
loop designs for real-time image filtering, scaling and warping .
The image processing and display systems of this period were forerunners
of digital effects boxes and more recently LCD display scaling chips.
In recent years I have conducted an extensive survey of prior art and
contemporary technology in noise reduction, scaling and deinterlacing
for progressive scan display (480p & 1080p). I compiled an archive
of technical papers in this area.
Over the years I have repeatedly been asked to provide prior art and evidence
in patent infringement cases for display technology.
Video Compression Algorithms
In the early ‘70s I performed my graduate research in video compression.
At that time I conducted a thorough literature search and was completely
familiar with the state of the art.
I was one of the first to perform adaptive block transform coding and
the first to apply block transform coding to video. This is described
in my thesis  and summarized in an SPIE
paper . These techniques underlie MPEG
and virtually all other video compression schemes today.
Much of the work from this period was forgotten for many years because
there was no commercially feasible implementation at that time. Now, in
many cases this work has been reinvented and even patented as sub-micron
technology has allowed practical use.
I have a comprehensive archive of technical papers extending from the
earliest work in the ‘50s through the ‘80s. The archive is
extensively referenced in a history of video compression that I am in
the process of writing.
MPEG1 and MPEG2 Standards – Video,
Audio and Systems
began monitoring the MPEG standardization effort in 1989, and started
attending MPEG in 1990. I took a proactive stance, both in technical contribution
and in management of the MPEG process.
I was one of only a few people who understood all three parts of the standard
in detail as it was being developed.
I was Head of Delegation (HoD) for the United States in 1991-1992, and
Editor in Chief of the MPEG1 standard. I personally reviewed and edited
all three parts of the standard in detail, and wrote much of the informative
annex for the MPEG1 standard.
I have a virtually complete archive of MPEG contributions from inception
in 1988 through to 1994.
In 1992-1993 I was hired by CableLabs to be the technical expert for establishing
the MPEG Patent Pool (Now MPEGLA). In the course of creating a list of
essential IP to practice the standard, I reviewed approximately 10,000
abstracts and 1,000 patents. This is summarized in a chapter of the MPEG
book by Mitchell et al .
In the last two years I was a testifying witness and a supporting witness
in two major patent cases involving MPEG Systems and Video technology.
Both cases were settled favorably to the party for whom I appeared.
CCIR DAB (Digital Audio Broadcast) Standard
chaired the implementation subcommittee that analyzed MPEG1 Audio (aka
MUSICAM), Dolby AC3 and other proposed algorithms for cost of implementation.
was a co-founder of the MPEG4 standard and chaired the subcommittee from
inception for 2-1/2 years.
I led the small group that established many of the fundamental principals
of the standard, including object-based coding, software-based implementation,
and development of the bitstream as a syntactic language .
I was instrumental in establishing the work on Advanced Audio Coding (AAC).
I initiated the work in Synthetic-Natural Hybrid Coding (SNHC), and personally
contributed to the work on compression of 3D graphics in the area of error
I have a nearly complete archive of all MPEG4 contributions from 1993-1994.
 Hubble L., Reader C., “State of the art in image
display systems”, SPIE Vol. 199, pp. 2-8, 1979.
 Reader C, Flanagan W.D., Design Considerations
for Real-Time Image Processing, SPIE Vol. 180, 1979.
 J Adams, C Patton, C Reader, D Zamora,
"Hardware for Geometric Warping", Electronic Imaging, April, 1984.
 Reader C., “Orthogonal Transform
Coding of Still and Moving Pictures”, U. Sussex,, England, 1973.
 Reader C., “Intraframe and Interframe
Adaptive Transform Coding”, SPIE Vol. 66, 1975.
 “MPEG Video Compression Standard”,
Edited by J. L. Mitchell et al, Chapter 16, “MPEG Patents”,
Reader C, "MPEG4: Coding for Content, Interactivity, and Universal
Accessibility", Optical Engineering, Vol. 35, No. 1, pp. 104-108,