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Wander The variation in position of a signal’s transition occurring at a rate of less than 10 Hz. WAIS Wide Area
Information Server. A client-server information system that let's users search through databases with a single user interface. WAN Wide Area Network. A network that connects computers over a
large geographic area. WAREZ Widely used to denote cracked or pirate versions of commercial software. In other words, illegal pirated software. Watt The unit of electrical
power. Watts are calculated by multiplying Voltage by the Current in
both DC and AC circuits without reactance. Another way of
calculating power is to multiply resistance or Impedance in Ohms by
the square of the current. This is normally shown as I2R=Power.
See Ohm's law. WAVV
(pronounced wave): The Windows-compatible
audio file format. The WAV file can be recorded at 11 kHz, 22 kHz,
and 44 kHz, and in 8- or 16-bit mono and stereo. Wave Length The distance between
peaks in a sinusoidal wave. Each part of the electromagnetic radiation
spectrum (e.g. radio waves, microwaves, x-rays, etc.) exhibit a specific
wavelength. Each part of the visible spectrum (what the human
eye sees) has a specified wavelength (perceived as color). Waveform
Monitor A special-purpose
oscilloscope that offers a graphical display of the amplitude-versus-time
view of the video signal under test. Waveform monitor views
are an excellent means to evaluate and measure various video signal
characteristics. Wavelet-Based
Compression An asymmetrical
image compression technique that is scalable and can provide high
quality. The drawback is that it becomes more computationally expensive
as the picture resolution and frame rates go up. The encode and decode
are asymmetrical in that one side is a lot more expensive computationally
than the other. The ImMix Cube and TurboCube used wavelet-based compression. Weave WebTV WebTV Networks,
Inc. is a leading manufacturer of set-top boxes used for viewing interactive
television and regular television. These receivers let users access
the Internet, including use of electronic mail and online chats. WebTV
set-top boxes like the WebTV Plus Receiver connect to a standard television
and a phone line. The WebTV Plus Receiver supports TV Crossover Links
and WebPIP. WebPIP lets users simultaneously view Web pages and TV
programming on the same screen, without a special picture-in-picture
TV. WebTV is a trademark and service of the Microsoft Corporation. Wet Gate A system by which film is
temporarily coated with a layer of liquid at the moment of transfer to
reduce the effect of surface faults such
as scratches. Originally a laboratory printing process, it is now also
be available on telecines. Also known as “Liquid Gate” White
Balance A
switch on a TV camera activated manually while the camera is pointed
at a pure white surface-used
to set white level. Setting the white balance of a camera ensures
that white is truly shown as white, and not biased to an off-white
color affected by local lighting conditions. For example, indoor fluorescent
lighting typical makes white objects look bluish if the camera is
not "white balanced" for that type of illumination. A means of
adjusting the color balance of a camera. With still video cameras,
white balance is automatically achieved via a special white balance
sensor as the subject is photographed. White Clip Camera circuit which
limits the amplitude of the signal to a specified level removing any
highlights in excess of this level. The NTSC signal, when it is intended
for broadcast, has a maximum allowable amplitude of 100 IRE units
or 1 Volt. It is possible for the amplifiers in most cameras to easily
produce signals that exceed this level. The clip circuit removes
all information above a user-established level when the camera is
adjusted—usually around 104 IRE. White
Level Refers to the camera
control to set the luminance level for a color camera. Also
refers to the 100 IRE mark in video, where the luminance is fully
"white" on a TV display. WHOIS A means of
looking up names in a remote database. Used initially as an aid for
finding e-mail addresses for people at large institutions or
companies. Wideband Used typically to
describe a signal which has a bandwidth of 20 kHz or greater(analog
video signals have bandwidths of greater than 4MHz). Widescreen Term given to picture
displays that have a wider aspect ratio than normal. For example TV's
normal aspect ratio is 4:3 and widescreen is 16:9. Although this is
the aspect ratio used by HDTV, widescreen is also used with normal
definition systems. Wildcard A character
string that is used in text searches to make finding a match easier.
An asterisk (*) usually means find any character or set of characters. Window
1. Video containing
information or allowing information entry, keyed into the video monitor
output for viewing on the monitor CRT. A window dub is a copy of a
videotape with time code numbers keyed into the picture. 2. A video
test signal consisting of a pulse and bar. When viewed on a monitor,
the window signal produces a large white square in the center of the
picture. 3. A graphical user interface that presents icons and tools
for manipulating a software application. Most applications have multiple
windows that serve different purposes. WINDOWS The Microsoft
Windows Operating system, which runs on DOS-based PCs. Window Event
A triggered event
that will accept an external trigger such as a GPI or manual switch
only within a specified time period. Window Shades See also:
Pillar box, side panels. Windows CE Microsoft Windows
CE is a 32-bit real-time embedded operating system (RTOS) designed
to empower the development of computing appliances, including set-top
boxes, digital versatile disc (DVD) drives, entertainment consoles,
smart phones, highly portable and personal computing devices like
handheld computers, and home appliances. Windows CE is modular, allowing
use of a minimum set of software components needed to support receiver
requirements. This uses less memory and improves operating system
performance. Windows CE provides a subset of the Win32 application
program interface (API) set, which provides an effective amount of
application source-code level portability and compatibility and user
interface consistency with other Microsoft Windows operating systems
and Windows applications. Windows Media
Player Delivers a popular
streaming and local audio and video formats, including ASF, WAV, AVI,
MPEG, Quick-Time, and more. Windows Media Player can play anything
from low-bandwidth audio to full-screen video. Windows
NT A good platform
for state-of-the-art video editing and 3D graphics creation. It does
not have any of the inherent limitations of Windows 3.1x. Unlike
Windows, there is no longer a 4-gigabyte file limit, there is an improved
system for handling drivers and it is written in 32-bit code throughout;
so everything works faster. Since NT is a 32-bit system running
on a 32-bit machine, there is a dramatic performance increase. There
is also multiprocessor support for even faster rendering speed. Windows
NT can run on Intel, Alpha, and MIPS platforms, giving a wide choice
of system speed and price. Its enhanced reliability protects
against system crashes. NT is also Network and Internet ready, allowing
one to easily distribute the finished video product. Window Shades: See: Side panels. WINSOCK Windows Sockets.
A technical specification that defines a standard interface between a Windows TCP/IP client application (such as
an FTP client or a Gopher
client) and the underlying TCP/IP protocol stack. The nomenclature
is based on the Sockets applications programming interface model
used in Berkeley UNIX for communications between programs. Wipe An optical effect
where the picture appears to have been “wiped” from the screen, i.e.,
left to right, or top to bottom. Woofer Low-frequency audio
speaker. Word A number of digital
bits that are handled as a group instead of individually. World Wide
Web Created in 1989
at a research institute in Switzerland, the Web relies upon the
hypertext transport protocol (http), an Internet standard that specifies
how an application can locate and acquire resources stored on another
computer on the Internet. Most Web documents are created using hypertext
markup language (html), an easy to learn coding system for WWW
documents. Work Orders
Printed instructions
sent to various departments in the plant, instructing them to process
media in some way. The first three Work Orders are generated by schedulers
or contract people. The following five are referred to as Media Movement
Work Orders (MMWOs) and are generated through the On Air Schedule:
Work Print In a motion picture studio or
processing laboratory, a rough print of a motion picture film used for
editing and study of action and continuity. Workstation A high-end computer
system having many of the characteristics of a personal computer;
intended for use by engineers or imaging professionals. WORM
(Write-Once-Read-Many) A one-time recordable
videodisc or CD-ROM medium. Information can be recorded and erased,
but not re-recorded. Write-once videodiscs are used for scientific,
image database and interactive video development purposes where only
a few copies are required or where the visual information requires
frequent updates. Writing Speed How fast the information
is written onto the tape. In video recording, writing speed impacts
the amount of information that can be stored on the tape, and therefore,
the quality or resolution of the recorded signal. WYSIWYG
(What You See is What You Get) Refers to computer
systems that give you an on-screen image of the final printed or recorded
product, rather than substituting symbols or codes. |
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