Difference between revisions of "Template:A/V Glossary"
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==Gizmos== | ==Gizmos== | ||
| − | + | {{DVD Player}} | |
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| − | + | {{Receiver}} | |
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| − | + | {{LCD TV}} | |
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| − | + | {{Amplifier}} | |
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| − | + | {{A/V Speakers}} | |
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| − | + | {{Record Player}} | |
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==Connectors, Cables, and Signal Types== | ==Connectors, Cables, and Signal Types== | ||
| + | {{RCA}} | ||
| − | + | {{Composite Video}} | |
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| − | + | {{Component Video}} | |
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| − | + | {{S-Video}} | |
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| − | + | {{HDMI}} | |
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| − | + | {{RGB}} | |
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| − | + | {{VGA}} | |
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| − | + | {{Stereo}} | |
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| − | + | {{Digital Audio}} | |
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| − | + | {{Progressive Scan}} | |
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| − | + | {{Interlaced Video}} | |
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| − | + | {{Resolution}} | |
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| − | + | {{Pixel}} | |
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| − | + | {{Standard Definition}} | |
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| − | + | {{High Definition}} | |
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| − | + | {{Analog Signal}} | |
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| + | {{Digital Signal}} | ||
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| + | [[Category:A/V]] | ||
Revision as of 13:54, 25 July 2012
Gizmos
Connectors, Cables, and Signal Types
- RCA
- most common audio/video connector type, used for Stereo audio, Composite and Component video, and Digital Coaxial audio
- also commonly referred to as phono, cinch, or composite connector
- color coded depending on signal type:
- ( Red - White ): stereo audio
- ( Yellow ): composite video
- ( Red - Green - Blue ): component video (sometimes also used for RGB video)
- ( Orange ) or ( Black ): digital coaxial audio
- Composite Video
- analog video signal extremely common on TVs, DVD players, VCRs, and receivers
- only supports standard definition picture
- ( Yellow ) RCA connector
- Component Video
- analog video signal that splits video into three components: blue, red, and luma (brightness)
- ( Red - Green - Blue ) set of three RCA connectors
- also called YPbPr
- has much clearer image quality with better colors than Composite or S-Video signals
- capable of supporting Progressive Scan and HD resolutions
- S-Video
- analog video signal
- splits video signal into two components: luma (brightness, Y), and chroma (color, C)
- uses single connector with four pins within a round metal collar
- better than Composite Video, but not as good as Component Video
- HDMI
- High-Definition Multimedia Interface
- connector type that can carry both digital video and digital audio in a single cable
- all versions support multi-channel digital audio
- all versions support progressive scan video and HD resolutions up to 1920x1200
- support for higher resolutions and new features in later versions:
- Ver. 1.3 - 2560x1600p60 at typical color depths
- Ver. 1.4 - up to 4096x2160p24 resolution, stereoscopic 3D
- see Display Formats for more info
- compatible with DVI video signal - can be adapted with simple dongle or cable
- uses flat metal connector with two inward curving corners and 19 internal pins
- Mini and Micro version of cable sometimes used with portable devices
- RGB
- analog video signal type employed by VGA video ports on computers
- several cable types with different uses:
- common VGA cable with DB-15 connector on both ends
- used to connect computers to monitors, projectors, and some TVs
- cable with three BNC connectors on each end, or VGA connector on one end and three BNC connectors on the other
- was usually used for professional/commercial-grade analog video
- some cables will have a VGA connection on one end and a set of ( Red - Green - Blue ) RCA connectors on the other end
- these cables are not Component Video and will not work with TVs, DVD Players, or other common consumer-grade electronics
- common VGA cable with DB-15 connector on both ends
- VGA
- common analog video connector for computers and monitors
- uses DE-15 connector (looks like a Serial Port but with 15 pins)
- ports and ends of cables usually blue in color
- can carry HD resolutions and Progressive Scan signals
- best common analog video standard
- has been obsoleted by Digital Video standards such as DVI, HDMI, and DisplayPort
- Stereo
- audio consisting of two channels (Left and Right)
- can be digital or analog, but is traditionally analog
- most common cable types use ( Red - White ) or ( Red - Black ) RCA connectors, 1/8" Mini-jacks, or 1/4" Jacks
- Progressive Scan
- display method that consists of drawing each line of a video frame successively during each display refresh cycle
- Example: Frame 1 of a video signal is broken up into many horizontal lines of pixels. The display draws each line of the image successively from top to bottom during its first refresh cycle. When Frame 2 of video signal arrives, the display draws it in the same fashion during its next refresh cycle.
- significantly better image quality than Interlaced Video, sharper with much better effective vertical resolution
- mostly found in computer monitors and HDTVs, display method of all LCD displays
- uncommon in analog video, except over Component Video or VGA connections
- common in digital video, especially over DVI, HDMI, and DisplayPort connections
- denoted by an p at the end of a display format, e.g. 480p, 720p, or 1080p
- High Definition formats are also Progressive Scan except 1080i
- Interlaced Video
- display method that consists of drawing only alternating lines of video signal during a single display refresh cycle
- Example: Frame 1 of a video signal is broken up into many horizontal lines of pixels. Lines 1, 3, 5, 7... of the image are drawn by the display during its first refresh cycle, which we'll call Frame 1a. At the display's next refresh cycle, Frame 1b, it draws lines 2, 4, 6, 8... of Frame 1. It then draws lines 1, 3, 5, 7... of the next frame of the video, then lines 2, 4, 6, 8... and so on for each successive frame.
- common for analog video, especially over a Coaxial, RCA, or S-Video cable
- denoted by an i at the end of a display format, e.g. 480i or 1080i
- vertical resolution effectively halved because at any given moment only half the pixels in a given column are active
- video quality is blurry and faint compared to Progressive Scan video
- unpleasant 'combing' pattern is sometimes visible on in scenes with lots of action, horizontal motion, or fast camera panning
- de-interlacing can reducing appearance of 'combing' when an interlaced video is played back on a progressive scan display