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Engineering and manufacturing industries

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Digital TV: Makers Bet on VLSI

Article Abstract:

Four manufacturers will market digital television sets in 1984 based on International Telephone & Telegraph Corp.'s eight chip digital TV chip set. The set, which uses five VLSI circuits, digitizes demodulated signals for improved picture quality, pseudohigh resolution, picture-storage capability, and reduced cost of production. Digital television should also be important to direct satellite TV transmission. Within four to five years, ITT plans to combine all the circuits onto one chip. The five main chips are a video codec, an audio codec, video and audio processor units, and a deflection control unit. A phase-locked circuit ensures proper color reception. The audio circuit accomodates stereo audio signals and a channel for bilingual presentations. Block diagrams illustrate the chip set and individual components.

Author: Lerner, E.J.
Publisher: Institute of Electrical and Electronics Engineers, Inc.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1983
Consumer electronics, Television sets, Digital video, Digital television, Television equipment, Signal processing, Digital Signals, Video Systems, VLSI

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The Drive to Regulate Electromagnetic Fields

Article Abstract:

Today, many trade groups and manufacturers are demanding that the Environmental Protection Agency (EPA) or another federal agency set standards for human exposure to electromagnetic (EM) fields. There is scientific debate over the real hazards of EM exposure, but most international standards seem to be converging toward agreement. A panel of experts present their opinions on the course of EM-field standards.

Author: Lerner, E.J.
Publisher: Institute of Electrical and Electronics Engineers, Inc.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1984
Standard, Standardization, Electromagnetic radiation, Government Agency, Medical Issues

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Humanization: Man or Machine?

Article Abstract:

Opposing views of man's role in space are illustrated by arguments for and against the building of a space station in the 1980s. Some scientists argue that manned space flight has been more for spectacle than scientific achievement. NASA argues that human flexibility compensates for the larger expenses of sending men instead of machines into space.

Author: Lerner, E.J.
Publisher: Institute of Electrical and Electronics Engineers, Inc.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1983
Satellites (Astronomical bodies), Satellites, Space Craft, Space Exploration

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