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GENERAL INSTRUMENT AND MIT MAKE BROADCASTING HISTORY WITH FIRST DIGITAL HIGH-DEFINITION TELECAST

 GENERAL INSTRUMENT AND MIT MAKE BROADCASTING HISTORY WITH
 FIRST DIGITAL HIGH-DEFINITION TELECAST
 WASHINGTON, March 23 /PRNewswire/ -- General Instrument Corporation and the Massachusetts Institute of Technology, partners in the American TeleVision Alliance, in cooperation with Public Broadcasting Station WETA, made broadcasting history on March 23 with the world's first all- digital broadcast of a high-definition television program. The historic transmission included reception both through traditional television broadcasting medium and over an existing cable television system.
 At just past noon, EST, Washington public television station WETA, Channel 26, switched from NTSC television transmission to an all-digital DigiCipher high-definition transmission. A digital HDTV video recorder rolled at WETA's transmitter site on River Road in Bethesda, Md. About 10 miles away, the historic first broadcast was received, decoded and displayed on HDTV monitors located in the U.S. Capitol. Elsewhere in Washington, District Cablevision, a TCI system, also picked up, monitored and evaluated the transmission of the WETA signal. This historic event was hosted by Speaker of the House Thomas Foley and was viewed by an array of leaders in government, industry and academia.
 This HDTV program included an overview of the progression of broadcast technology. The presentation began with early radio broadcasts and then moved to NTSC black and white television, to NTSC color and then to brilliant 1,050-line digital high definition with compact disc-quality sound.
 The HDTV television signal from the DigiCipher system was transmitted within a normal bandwidth television channel. At the Capitol, two standard rooftop television antennas received the broadcast. The signal received on one antenna was fed directly to a DigiCipher receiver and viewed on monitors. The signal received on the other antenna was passed through the U.S. Capitol cable television system for comparison viewing.
 "Sixty-one years ago, RCA made broadcasting history when it began experimental TV transmissions from atop the Empire State Building in New York City. Today, General Instrument and the Massachusetts Institute of Technology have opened a new chapter to that history with the world's first digital HDTV broadcast to Capitol Hill," said Donald Rumsfeld, chairman and CEO of General Instrument Corp.
 Dr. Jerry Heller, executive vice president of General Instrument Corporation's VideoCipher division, commented on the historic milestone. "In June 1990, General Instrument surprised the television world when it entered the HDTV competition with an all-digital proposal. Now, less than two years later, this broadcast proves the system is a reality."
 Dr. Jae Lim, professor of electrical engineering and the director of MIT's Advanced Television Research program, commented further. "Digital television is a working reality which adapts comfortably with conventional television delivery systems," said Lim. "It is notable that an existing television transmitter and cable system were used for this high-definition broadcast."
 The DigiCipher HDTV system recently completed testing at the Advanced Television Test Center (ATTC), a television industry-sponsored laboratory in Alexandria, Va. The ATTC has been subcontracted by an advisory committee of the Federal Communications Commission (FCC) to test five proposed high-definition television transmission systems. General Instrument and MIT have collaborated in developing two of those systems. Results of the tests will play an important role in the selection by the FCC of an American HDTV television transmission standard.
 The DigiCipher technology was developed in San Diego, by a research team headed by GI's Heller and Dr. Woo Paik. It has 1,050 scan lines, 2:1 interlaced scanning, 29.97 frames per second and 59.94 fields per second.
 General Instrument Corporation is a world leader in broadband transmission, distribution and access control technologies for cable, satellite and terrestrial broadcasting applications.
 MIT, founded in 1861, is a leading research university in Cambridge, Mass., with strong focus on education in engineering and science, with enrollment of about 9,500 students. MIT-trained researchers are key contributors in advanced television development programs throughout the United States.
 -0- 3/23/92
 /CONTACT: Bernie Windon, 202-833-9700, or 312-541-5030, or Quincy Rodgers, 202-833-9700, or Marci Williams, 202-833-9700, all for General Instrument/ CO: General Instrument Corporation; Massachusetts Institute
 of Technology ST: Massachusetts IN: ENT SU: PDT


CK-OS -- NY042 -- 0587 03/23/92 13:00 EST
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Date:Mar 23, 1992
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