Belkin 157 - Manual (Page 2)

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length and aperture. Depth of field increases
with shorter focal lengths and smaller
aperture openings.
DIAMOND-LIKE CARBON (DLC)
A thin carbon-based coating that has high
hardness and low friction.
DIGITAL 8 (D8)
Digital recording format using traditional
8mm tapes. Many Digital 8 camcorders can
view 8mm and Hi8 tapes, but Digital 8
recordings can't be viewed on an 8mm or
Hi8 camcorder.
DIGITAL AUDIO TAPE (DAT)
A consumer & professional recording and
playback media for high-quality audio.
DIGITAL AUTO TRACKING
Automatically check the tracking when a
video tape starts playing and adjusts if
necessary.
DIGITAL CINEMA SOUND (DCS)
Recreates the sound characteristics of
Hollywood dubbing studios used for
recording movie soundtracks. It is a
combination of Cinema Studio
reverberation, Virtual Multi Dimension and
Screen Depth Matching. This is all made
possible by a powerful digital signal
processing chip that improves on the
dynamism of every soundtrack.
•Cinema Studio A: Sony Pictures
Entertainment Cary Grant Theatre, suitable
for most movies.
•Cinema Studio B: Sony Pictures
Entertainment Kim Novak theatre, ideal for
action movies.
•Cinema Studio C: Sony Pictures
Entertainment Scoring Studio, ideal for
musicals or orchestral soundtracks.
DIGITAL CONSTANT IMAGE (DCI)
Only switching the pixels in an LCD
projector, in parts of the picture when
movement is present ensures a clean stable
picture with no flicker.
DIGITAL EXTENDED PROCESSOR
(DXP)
Increasing the signal to 14-bits achieves a
more accurate conversion through
improved signal to noise ratio, and results in
more vivid capture of both light and dark
images, while also rendering a more
detailed and clearer picture.
DIGITAL NOISE REDUCTION (DNR)
When video signals are compressed, digital
noise can appear on some portions of a
DVD disc and are sometimes visible to a
discerning videophile. Digital Noise
Reduction results in less flickering in still
background portions.
DIGITAL PITCH CONTROL (DPC)
Makes high/low speed play-back voices
sound more normal, making it easier to
understand the recorded words.
DIGITAL REALITY CREATION —
MULTI FUNCTION (DRC-MF)
"Uses a digital signal processing based
algorithm to deliver sharper and clearer
images.
•DRC1250: Reduces the visible scanning
lines of a video picture.
•DRC100: Uses real-time field doubling to
create a smooth, flicker-free video picture.
•DRC Progressive: Creates an excellent still
image with minimal flicker and less visible
scanning lines of a video picture.
DIGITAL SIGNAL PROCESSING (DSP)
Circuit that reproduces sound in the
appropriate setting: movies in a Theatre,
classical music in a Hall, rock music in an
Arena, for example.
DIGITAL TELEVISION (DTV)
See HDTV and SDTV.
DIGITAL THEATRE SYSTEMS (DTS)
DTS is a multichannel audio compression
format similar to Dolby Digital, but differing in
that it generally uses higher data rates
offering better quality.
•DTS: Digital discrete 5.1 sound (left, centre,
right, rear left, rear right, low frequency
emitter).
•DTS Discrete 6.1: Digital discrete 6.1 sound
(left, centre, right, rear left, rear centre, rear
right, low frequency emitter).
•DTS ES 96/24: Digital discrete 5.1 sound
(left, centre, right, rear left, rear right, low
frequency emitter) using extended
bandwidth (up to 96kHz) designed for
music.
•DTS ES Matrix 6.1: Digital discrete 5.1 sound
(left, centre, right, rear left, rear centre, rear
right, low frequency emitter) with matrix
rear centre.
•DTS Neo 6: Digital matrix 6.1 sound (left,
centre, right, rear left, rear centre, rear right,
low frequency emitter).
DIGITAL TO ANALOG CONVERTER
(DAC)
A conversion process that takes a digital
signal and converts it into an analog signal
usually by a process of filtering.
•Advanced Pulse DAC: Uses a high
precision algorithm to produce an
extremely high pulse density; resulting in
better sound quality.
DIGITAL VERSATILE DISC (DVD)
Optical digital disc storage that
encompasses audio, video, and computer
data. DVD uses the UDF file system. Single-
side, single-layer discs have 4.7GB capacity;
through to double-sided, dual-layer discs
with 17GB capacity.
•DVD Video: Pre-mastered video discs.
•DVD Audio (DVD-A): Pre-mastered media
incorporating extended bandwidth or 5.1
channel audio along with limited video
content.
•DVD Read Only Memory (DVD-ROM): Pre-
recorded media, 4.7GB capacity, optimised
for data use.
•DVD ""Minus"" Recordable (DVD-R): Write-
once media, 4.7GB capacity, optimised for
video use.
•DVD ""Minus"" ReWritable (DVD-RW): Re-
writable (1,000 times) media, 4.7GB
capacity, optimised for video use.
•DVD ""Minus"" ReWritable Video Recording
Mode (DVD-RW VR Mode): Allows for
added flexibility when recording and
editing. Features such as in camera editing,
erase and re-recording, play list display are
possible. Playback is limited to compatible
products.
•DVD ""Minus"" Random Access Memory
(DVD-RAM): Re-writable media, 4.7GB
capacity, optimised for data use.
•DVD ""Plus"" Recordable (DVD+R): Write-
once media, 4.7GB capacity, optimised for
video and data use.
•DVD ""Plus"" ReWritable (DVD+RW): Re-
writable (100,000 times) media, 4.7GB
capacity, optimised for video and data use.
DIGITAL VIDEO BROADCASTING
(DVB)
The transmission scheme for terrestrial
digital television.
DIGITAL VIDEO ENHANCER (DVE)
Utilises advanced digital signal processing to
greatly improve image quality. Edges are
sharpened and bright and dark images are
separated without adding contrast to the
overall image.
DIGITAL VIDEO INTERFACE (DVI)
A specification created by the Digital Display
Working Group (DDWG) to accommodate
analog and digital monitors with a single
connector.
•DVI-A: For analog signals
•DVI-D: For digital signals
•DVD-I: For integrated (combined) analog or
digital signals
DIRECT CURRENT (DC)
An electrical current which, unlike Alternate
Current (AC), maintains a steady flow and
does not reverse directions. DC cannot be
measured in cycles per seconds or Hz. DC
current is either generated from a battery or
derived from alternating current through a
special circuit. Many electronic circuits
require DC current in their operation.
DIRECT DIGITAL SYNC
Locks the Digital to Analogue converter to
the master clock to prevent time based
errors such as jitter or phasing anomalies.
The results are improved imaging and
depth.
DIRECT MEMORY ACCESS (DMA)
A method of moving data from a device to
memory (or vice versa) without the help of
the microprocessor. The system board uses
a DMA controller to handle a fixed number
of channels, each of which can be used by
only one device at a time.
DIRECT STREAM DIGITAL (DSD)
Is the advanced recording technology that
makes SACD possible. Standard CDs use
44.1kHz/16-bit PCM to represent audio in
digital form. DSD, on the other hand, is a 1-
bit technology that samples music 2.82
million times per second, capturing 4 times
more information. The resulting sound is
warmer, smoother, and more "analog" than
anything 44.1kHz/16-bit PCM can deliver.
DISC AT ONCE (DAO)
The CD-ROM disc is created in one
continuous write. This format can be read by
all platforms and all CD-ROM drives.
DISCRETE COSINE TRANSFORM
(DCT)
Method of data compression of digital video
pictures by resolving blocks of the picture
(8x8 pixels).
DOLBY
•Dolby B: 10dB tape noise reduction
•Dolby C: 20dB tape noise reduction
•Dolby HX Pro: Avoids tape saturation and
improves high-frequency headroom.
Compatible with any playback deck,
whether or not it has HX Pro circuitry.
•Dolby Surround: Analog stereo matrix 3.0
sound (left, right, rear).
•Dolby Surround Pro Logic: Analog stereo
matrix 4.0 sound (left, centre, right, rear).
•Dolby Surround Pro Logic II: Analog stereo
matrix 5.1 sound (left, centre, right, rear left,
rear right, low frequency effects).
•Virtual Dolby Surround: Simulated surround
sound through stereo speakers by utilising
audio phase shifting.
•Dolby Digital 5.1: Digital discrete 5.1 sound
(left, centre, right, rear left, rear right, low
frequency effects). Also known as AC-3.
•Dolby Digital Surround EX: Digital discrete
5.1 sound (left, centre, right, rear left, rear
centre, rear right, low frequency effects)
with matrixed rear centre.
DYE SUBLIMATION
A printing process where wax film is
thermally transferred to printing media. Dye
sublimation is generally no more expensive
than other methods; however, it provides
extremely high quality.
DYNAMIC BASS FEED BACK (DBFB)
A highly sensitive bass enhancement
system that produces full-bodied bass
sound even at low volumes.
DYNAMIC RANGE
The range, measured in decibels, between
the largest and smallest reproduced signals.
DYNAMIC SOUND GENERATOR
(DSG)
Selectively improves the bass and treble
segment of your music. It produces natural
sound effect without introducing distortion.
ELECTRONIC PROGRAM GUIDE
(EPG)
An application used with digital set-top
boxes and newer televisions to list current
and scheduled programming plus a short
summary or commentary for each program.
EQUALISER (EQ)
Allows adjustment of the level of specific
audio frequencies. Most equalisers graphic
equalisers can be pre-set or manually
adjusted.
EXTENDED DEFINITION (ED)
A speaker design that accommodates the
far wider frequency response of high-
resolution audio sources like the Super
Audio Compact Disc. Compared to the
conventional cut-off of 20,000Hz; it can
achieve a response of 50,000Hz or more.
EXTENDED GRAPHICS ARRAY (XGA)
An XGA display has 1020 horizontal pixels by
768 vertical pixels, giving it a total display
resolution of 783,360 individual pixels.
FIREWIRE
See IEEE 1394.
FOCAL LENGTH
The distance between the optical centre of
a lens and the image plane). The focal length
is measured in millimetres and determines
both the magnification and the angle of view
of a lens.
FRAME RECORDING
Captures video, a single frame at a time.
Useful in the filming of "stop motion"
animation.
FRAMES PER SECOND (FPS)
A measure of the rate at which pictures are
shown for a motion video image.
FREQUENCY MODULATION (FM)
The radio band from 87.5MHz to 108.0MHz
in Australia, with 0.2MHz intervals.
GAME SYNC MIXING
Mixes game sound input with your favourite
music tracks for a more enjoyable gaming
experience.
G-CODE
G-Code numbers appear in TV guides and
newspaper television pages. Entering this
number into compatible recorders greatly
simplifies record programming.
GLOBAL SYSTEM FOR MOBILE
COMMUNICATIONS (GSM)
A standard for digital mobile communication
and is the world's most widespread
standard used in Europe, Africa, Middle East,
parts of the USA, Australia and Asia. Upon its
creation, GSM, an open, digital standard was
intended to make possible a range of new
services, features and applications which
could not be achieved with analog systems.
G-PROTECTION
A buffer memory mechanism that prevents
its portable audio equipment from skipping
under most conditions. The technology
recovers laser position 10 times faster than
previous designs; so it can withstand the
impact of jogging (and other sports) at the
rate of 8G impacts, 3 times per second.
HERTZ (HZ)
The unit measurement of audio frequency
based on cycles per second, named after
German physicist, Heinrich Rudolph (1857-
1894). One Hz means a signal has one cycle
per second.
HIGH ORIENTED POLYOLEFENE
(HOP)
A very lightweight, rigid speaker cone
material which gives superb bass and mid-
range sound even when being driven at
maximum volume.
HIGH PASS FILTER (HPF)
A network of elements used to attenuate all
frequencies below a pre-determined
frequency. Frequencies above the cutoff are
passed without effect.