- Settore:
- Number of terms: 20560
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- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
INRS is French acronym for the National Scientific Research Institute of the University of Quebec. INRS-Telecommunications shares facilities with Bell Northern Research, sort of Canada’s Bell Labs, and has simulated both advanced encoders and ATV schemes on its computer simulation system.
Industry:Software
a) The organization that formulated the “NTSC” system. Usually taken to mean the NTSC color television system itself, or its interconnect standards. NTSC is the television standard currently in use in the United States, Canada, and Japan. NTSC image format is 4:3 aspect ratio, 525 lines, 60 Hz and 4 MHz video bandwidth with a total 6 MHz of video channel width. NTSC uses YIQ. NTSC-1 was set in 1948. It increased the number of scanning lines from 441 to 525, and replaced AM sound with FM. b) The name of two standardization groups, the first of which established the 525 scanning-line-per-frame/30 frame-per-second standard and the second of which established the color television system currently used in the United States; also the common name of the NTSC-established color system. NTSC is used throughout North America and Central America, except for the French islands of St. Pierre and Miquelon. It is also used in most of the Caribbean and in parts of South America, Asia, and the Pacific. It is also broadcast at U.S. military installations throughout the world and at some oil facilities in the Middle East. Barbados was the only country in the world to transmit NTSC color on a non-525-line system; they have since switched to 525 lines. Brazil remains the only 525-line country to transmit color TV that is not NTSC; their system is called PAL-M. M is the CCIR designation for 525-line/30 frame television. See also M.
Industry:Software
a) A digital audio coding system originally developed by the BBC for point-to-point links. A later development, NICAM 728 is used in several European countries to provide stereo digital audio to home television receivers. b) A digital two-channel audio transmission with sub-code selection of bi-lingual operation. Stereo digital signals with specifications approaching those of compact disc are possible. NICAM uses a 14-bit sample at a 32 kHz sampling rate which produces a data stream of 728 kbits/sec.
Industry:Software
Private engineering school headquartered in Old Westbury, NY, noted for its advanced computer graphics.
Its Science and Technology Research Center, in Dania, FL, has been researching ATV for years. NYIT is a proponent of the VISTA ATV scheme.
Industry:Software
A Japanese broadcaster that is a proponent of ATV schemes similar to Faroudja’s SuperNTSC. NTV’s first generation EDTV system would use high line-rate and/or progressive scan cameras with prefiltering, adaptive emphasis, gamma correction, ghost cancellation, a progressive scan display, and advanced decoding at the receiver. The second generation would add more resolution, a widescreen aspect ratio, and better sound. The first generation is scheduled to be broadcast beginning in 1988.
Industry:Software
Provisions for 525-line system C teletext as described in EIA-516 and ITU-R BT.653.
Industry:Software
Philips Laboratories developed the HDS-NA ATV scheme and was among the first to suggest advanced precombing.
Industry:Software
Defects associated with NTSC:
# Monochrome and Color Defects
## Due to Sampling
##* Temporal Alias
##* Vertical Alias
##* Vertical Resolution Loss (Kell Factor)
## Due to aperture
##* Visible Scannig Lines
##* oft Vertical Edges
## Due to Interlace
##* Twitter
##* Line Crawl
##* Vertical Resolution Loss (Interlace Coefficient)
##* Motion Artifacts, Vertical and Horizontal
## Due to Transmission
##* Ghosts
##* ICPM
##* Group Delay
##* Impulsive Noise
##* Periodic Noise
##* Random Noise
##* Interference
##* Filter Artifacts
## Due to Changing Equipment
##* Non-Linear System Gamma
# Color Defects
## Visible in Monochrome
##* Cross Luminance
##* Visible Subcarrier
##* Chroma Crawl
Industry:Software
The color signal TV standard set by the National Television Standards Committee of the USA.
Industry:Software
An electronic circuit that breaks down the composite NTSC video signal into its components.
Industry:Software
