Terry Welch
Encyclopedia
Terry A. Welch is an American computer scientist. Along with Abraham Lempel
and Jacob Ziv
, he developed the lossless LZW
compression algorithm which was published in 1984.
Welch received a B.S.
, M.S.
and Ph.D.
degree at MIT
in electrical engineering
. He taught at the University of Texas at Austin
and worked in computer design at Honeywell
in Waltham, Massachusetts
.
In 1976 he joined the Sperry Research Center
, Sudbury, Massachusetts
, where the paper about the LZW algorithm was published. In 1983 he joined DEC
where he worked as DEC liaison to MCC
's advanced computer architecture program.
Abraham Lempel
Abraham Lempel is an Israeli computer scientist and one of the fathers of the LZ family of lossless data compression algorithms.Lempel was born on 10 February 1936 in Lwów, Poland . He studied at Technion - Israel Institute of Technology, and received a B.Sc. in 1963, M.Sc. in 1965, and D.Sc. in...
and Jacob Ziv
Jacob Ziv
Jacob Ziv is an Israeli computer scientist who, along with Abraham Lempel, developed the LZ family of lossless data compression algorithms.-Biography:...
, he developed the lossless LZW
LZW
Lempel–Ziv–Welch is a universal lossless data compression algorithm created by Abraham Lempel, Jacob Ziv, and Terry Welch. It was published by Welch in 1984 as an improved implementation of the LZ78 algorithm published by Lempel and Ziv in 1978...
compression algorithm which was published in 1984.
Welch received a B.S.
Bachelor of Science
A Bachelor of Science is an undergraduate academic degree awarded for completed courses that generally last three to five years .-Australia:In Australia, the BSc is a 3 year degree, offered from 1st year on...
, M.S.
Master of Science
A Master of Science is a postgraduate academic master's degree awarded by universities in many countries. The degree is typically studied for in the sciences including the social sciences.-Brazil, Argentina and Uruguay:...
and Ph.D.
Doctor of Philosophy
Doctor of Philosophy, abbreviated as Ph.D., PhD, D.Phil., or DPhil , in English-speaking countries, is a postgraduate academic degree awarded by universities...
degree at MIT
Massachusetts Institute of Technology
The Massachusetts Institute of Technology is a private research university located in Cambridge, Massachusetts. MIT has five schools and one college, containing a total of 32 academic departments, with a strong emphasis on scientific and technological education and research.Founded in 1861 in...
in electrical engineering
Electrical engineering
Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics and electromagnetism. The field first became an identifiable occupation in the late nineteenth century after commercialization of the electric telegraph and electrical...
. He taught at the University of Texas at Austin
University of Texas at Austin
The University of Texas at Austin is a state research university located in Austin, Texas, USA, and is the flagship institution of the The University of Texas System. Founded in 1883, its campus is located approximately from the Texas State Capitol in Austin...
and worked in computer design at Honeywell
Honeywell
Honeywell International, Inc. is a major conglomerate company that produces a variety of consumer products, engineering services, and aerospace systems for a wide variety of customers, from private consumers to major corporations and governments....
in Waltham, Massachusetts
Waltham, Massachusetts
Waltham is a city in Middlesex County, Massachusetts, United States, was an early center for the labor movement, and major contributor to the American Industrial Revolution. The original home of the Boston Manufacturing Company, the city was a prototype for 19th century industrial city planning,...
.
In 1976 he joined the Sperry Research Center
Sperry Corporation
Sperry Corporation was a major American equipment and electronics company whose existence spanned more than seven decades of the twentieth century...
, Sudbury, Massachusetts
Sudbury, Massachusetts
Sudbury is a town in Middlesex County, Massachusetts, United States, population 17,659. The town was incorporated in 1639, with the original boundaries including what is now Wayland. Wayland split from Sudbury in 1780. When first incorporated, it included and parts of Framingham, Marlborough, Stow...
, where the paper about the LZW algorithm was published. In 1983 he joined DEC
Digital Equipment Corporation
Digital Equipment Corporation was a major American company in the computer industry and a leading vendor of computer systems, software and peripherals from the 1960s to the 1990s...
where he worked as DEC liaison to MCC
Microelectronics and Computer Technology Corporation
Microelectronics and Computer Technology Corporation was the first, and - at one time - one of the largest, computer industry research and development consortia in the United States....
's advanced computer architecture program.