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Thursday December 18 2014

Digital TV
Picture of DTV

A Broadcast Technology Timeline

1837Morse patents the telegraph
1876Bell patents the telephone
1877Edison invents sound recording
1888Hertz demonstrates radio frequency (RF) transmission
1901Macron demonstrates radio telegraphy
1905Dial telephone invented
1906Vacuum tube developed
Fessenden transmits voice and music
1911Oreo cookies introduced
1912Radio Act of 1912
1917U.S. enters WWI
1917University of Wisconsin signs on WHA radio
1918WWI ends
1920Commercial radio broadcasting begins in U.S.
1926Baird demonstrates electronic television
1934Communication Act of 1934
1935Radar invented in Britain
1936BBC begins TV Broadcasting
1941CBS begins commercial TV broadcasting
NTSC monochrome system finalized
U.S. enters WWII
1945WWII ends
1947TV stations in East and Midwest connected by microwave
1948Cable TV is born in Oregon
FCC's TV licensing "freeze" begins
First broadcast use of audiotape
The transistor is developed by Bell Labs
1951Transcontinental TV interconnection
Direct Distance dialing introduced
UNIVAC-first practical electronic computer
1952FCC's TV licensing "freeze" ends
FCC allocates TV channels in the UHF band
FCC reserves channels for non-commercial educational TV
1953KUHT/Houston, first non-commercial TV station signs on
1954Swanson introduces the TV Dinner
1955Fiber optic cable invented
1956First broadcast use of videotape
1959Xerox markets first office copier
1962First cable only network premieres
First demonstration of satellite communications
1963Norelco introduces audiocassette
Touch-tone phones introduced
1964All-Channel Act mandates UHF reception
1965First geo-synchronous communication satellite
1967Public Broadcasting Act of 1967
First use of keyboard to control electronic computer
Cable reaches 2% of U.S. TV households
1969PBS incorporated
Men walk on the moon
1970NPR formed
Diskette (floppy disk) introduced for computers
1971First microprocessor (computer) chip
1972PONG (first video game) marketed by Magnavox
Cable penetration reaches 10%
1973Digital time-based corrector and frame synchronizer introduced
1975HBO begins satellite distribution of its services
1976VHS format introduced
1977First Apple computer
1978Public television begins satellite program distribution
1979Visicalc, first spreadsheet software for small computers
1980CNN debuts
VCR penetration is 1%
Cable penetration is 23%
1981IBM enters the PC market
1982Audio compact disk introduced
Average household receives 12 channels
Cable penetration is 33%
1983Apple introduces the mouse
VCR penetration passes 10%
1986Space shuttle Challenger blows up
58% of U.S. households receive two or more PTV stations
1987VCR penetration passes 50%
1988Cable reaches into 50% of U.S. TV households
1989Berlin wall comes down
1991General Instrument demonstrates digital TV
1993Congress mandates spectrum auctions for "new services"
1994"Grand Alliance" field tests digital TV
1995Cable penetration is 64%
1996DTV broadcasts begin in Washington, DC, and Raleigh, NC
FCC adopts modified Grand Alliances (ATSC) DTV standard
1997FCC announces channel allocations and DTV transition timetable
2003All PTV licensees must have DTV signals on air
WSIU/WUSI TV Goes Digital
2006End of NTSC (analog) television broadcasting

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