The home of the PAL system
- This refers to a way of connecting audio signals using wires carring a
single core and screen.
- Upper Drum
- This is the part of the video drum which lies above the video heads.
In most Betamax machines it fixed and does not rotate. Sony VCR's in
particular suffer from wear of the upper drum which causes the tape
to judder especially during rewind. See also the
upper drum page.
- Recording in which the luminance FM deviation is from 5.6 to 7.2 MHz and the colour under frequency is 924 kHz.
- User bits
- Sections of the time code consisting of a total of 32 bits used for
recording information such as the year, month and day, tape ID number
or a program ID number.
- The portion of the video signal that occurs between the end of one
field and the beginning of the next. During this time, the electron
beams in the cameras and monitors are turned off so that they can
return from the bottom of the screen to the top without showing traces
of movement on the screen. When the position of V-blanking is not
adjusted correctly, a horizontal black bar appears on the screen.
- Variable Bit Rate. MPEG video compression where the amount of
compression can be varied to allow for minimum degradation of the
image in scenes that are harder to compress.
- Abbreviation of Video, Burst and Sync. A composite signal consisting
of video signal, burst signal and sync signal.
- Video Cassette Recorder.
- Vertical Interval
- Non-visible (off-screen) part of a video picture signal.
- These letters stand for
Very Horrible System or is that Video Home System :-)
This was JVC's rival 1/2-inch home video format.
- Abbreviation of Vertical Interval Time Code. Time code recorded on a
video signal track during V-blanking interval. It can be read
correctly even during slow or still picture playback.
- Video Head
- This is the rotary
disc which contains the video head tips. See also the
- Video Head Tip
- These are the
delicate tips which actually
record/replay the video signal onto the video tape. There are between
two and five tips depending on the machine.
- Video Insert
- The ability to
dub over the video track using flying erase head.
- Video Tape Recorder.
- VITC Vertical Interval Time Code
- Timecode stored in the vertical interval of the video signal. Has
the advantage of being readable by a VTR in still or jog. Multiple
lines of VITC can be added to the signal allowing the encoding of more
information than can be stored in normal LTC.
- A webring is a collection of sites on the world wide web which agree
to link together in a ring.
- Series of Sony U-matic tapes for use in the SP mode. It is
also a line of Sony Receiver/Monitor TVs in the U.S.
See also the U-matic tape page.