Philips DFR9000 manual Glossary

ENGLISH 43

	12. Glossary
AM	Amplitude Modulation. A method of radio transmission, by which the information part of the
	signal causes the amplitude to vary without affecting the frequency.
Amplifier	An electronic device that takes in an original signal, gives it more power and provides it as an
	output.
Analogue	A continuously varying action, or movement that takes time to change from one position to
	another. Standard audio and video signals are analogue. An analogue signal has an infinite number
	of levels between its highest and lowest value. (Not like digital, where changes are by steps.)
A/V input	Allows input of Audio/Video signals.
Balance	Adjusts the relative volume levels of left and right channels for optimal stereo effect.
	Compensates for channel imbalance and non-symmetrical loudspeaker positioning
Bandwidth	A frequency range, or 'band' of frequencies between the limits defined by the 'half power
	points', where the signal loss is -3dB. In audio and video, it is this band of frequencies that can
	pass through a device without significant loss or distortion.The wider the bandwidth, the better
	the quality that results, such as a sharper picture, better sound, etc.The higher the bandwidth
	number the better the performance (300 MHz is better than 250 MHz.). When a signal passes
	through a path with more than one device (including cables) the limiting factor (bottleneck) in
	that path is the device with the narrowest bandwidth.
Bass	The lower range of audio frequencies, up to approximately 500 Hz.
Black level	More commonly referred to as 'brightness', the black level is the level of light produced on a
	video screen.
Copy protection	Copy protection is a technical protection measure designed to prevent duplication of
	copyrighted works.
CVBS	CVBS stands for 'Composite video, blanking, and sync'. A standard video signal as output by
	VCRs and satellite receivers. CVBS combines the colour, luminance and synchronization
	information in one signal.The audio signal is transferred separately.
DAB	Digital Audio Broadcast. DAB is a terrestrial digital broadcasting standard which is recognized
	by the IUT (International Union for Telecommunications).The use of proper DAB frequencies
	(Band III and L-Band) allows a good quality transmission. DAB programs are broadcast inside a
	multiplex which is composed of six to ten radio stations on a single frequency. DAB can carry
	not only audio but also PAD (Program Associated Data) or NPAD (Non Program Associated
	Data) such as text, pictures, data and even videos: it is then called DMB (Digital Multimedia
	Broadcasting).
dB	Decibel.The minimum change in sound intensity that a human ear can distinguish. A doubling of
	volume is a 10 dB increase.To double volume in a stereo system, a 10-fold increase in power
	output (WATTS) is required.
DCDi™	DCDi™ by Faroudja. stands for Directional Correlation Deinterlacing and is a package of
	picture innovations that digitally adjusts and optimizes picture quality to optimal contrast, colour
	and sharpness level.
Digital	A system of data or image values in the form of discrete, non-continuous codes, such as binary.
	When data is in a digital format, it can be processed, stored (recorded) and reproduced easily
	while maintaining its original integrity.
DLS	Dynamic Label Service. Radio text information, provided by DAB radio stations.
Dolby® Surround Sound	Dolby Stereo is the name given to the four-channel surround sound developed by Dolby
	Laboratories and introduced into movie theaters in the 70s. It employed a matrix encoding
	scheme called Dolby Surround which recorded four channels of information on two channels.
	The two channels are decoded into L, R, Center and Surround upon playback.The centre
	channel is recorded identically on the left and right channels. Also see '9. Surround modes'.
DTS Digital Surround	DTS: abbreviation for Digital Theater System. Like Dolby Digital, DTS is another 5.1-channel
	surround sound format that is available in movie theaters, and as an optional soundtrack on
	some DVD-Video movies for home theatre viewing. DTS is not a standard soundtrack format
	for DVD-Video, and is not used by HDTV or digital satellite broadcasting.
	Also see '9. Surround modes'.