Interlaced Scanning - This process divides and presents each video frame as two fields. Imagine a video frame being divided by the odd and even horizontal lines that make up the picture. The first field presents the odd lines; the second field represents the even lines. The fields are aligned and timed so that, with a still image, the human eye blends the two fields together and sees them as one. Motion in the image makes the fields noticeable. Interlace scanning allows only half the lines to be transmitted and presented at any given moment.
S-Video Connection - A method to interconnect video devices (such as a DVD player and the analog television) by sending the two signals luminance (Y) and an encoded color difference signal (C). The S-Video connection is made using a cable terminated in a small 4-pin connector (in some cases a 7 pin connector is used on computers to allow inclusion of an NTSC composite signal). S-video can greatly improve the picture when connecting SDTV or NTSC displays to a high quality video source such as DVDs.
Plasma Displays (PDP). A technique that builds an image from a large number of pixels formed in a glass panel. The pixels are individually controlled, yielding a picture free of flicker and of high brightness. Displays of excellent resolution and color are available and the display approaches the "television picture on the wall" ideal. PDP displays up to 160 cm (63in.) are available, making them suitable for the home theatre.
Stream - To send data on a network, such as the Internet, in such a way as to provide or simulate real-time delivery of video and/or audio.
HD-Capable TV - A standard definition set with a digital tuner. (This term was probably invented to confuse people.)
CEMA - Consumer Electronics Manufacturers Association. A U.S. industry group representing manufacturers of consumer electronics products
Multi-path interference - Some neighborhoods are plagued with this problem: - The signal finds more than one path to the antenna. Multi-path results from reflections off of buildings and diffraction around the sides of hills. For NTSC sets this will result in ghosts: multiple images shifted laterally. For DTVs the result can be an unusable signal, even though it may be strong. The solutions are moving the antenna or selecting a very directional antenna. Newer generations of DTV receivers are better able to cope with multi-path.
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