Philips AV-HS300G manual Appendix glossary, Aux, Avdl, Dvi

Appendix (glossary)

Defined below are the terms used in this manual.

Word	Explanation
AB Bus system	A bus control mode. By executing a transition, the A bus and B bus signals are
	output to the program images alternately.
Ancillary Data	The auxiliary data other than the video signals which is transmitted inside the
	data stream of the video serial interface. The data superimposed on the vertical
	blanking period is referred to as the V ancillary data (VANC).
Aspect ratio	The ratio between the horizontal and vertical dimensions of an image or screen.
	It is 16:9 for the HD format and 4:3 for the SD format.
AUX	A spare bus which can be switched by signals other than the main line output
[Auxiliary Bus]	signals.
AVDL	A function to automatically adjust the input image signal phase to the horizontal
[Automatic Video Delayline]	synchronization reference signal phase.
BB	The black burst signal. A full-screen black level composite signal which is used
[Black burst]	as the reference signal for gen-lock.
Border	The area or margin that is added to the edge of a wipe or key.
	Its width and color can be adjusted. The defocusing of the area around a border
	is referred to as the soft effect.
Clip	The threshold level of the luminance when key signals are created from a key
	source.
Color Background	The signals which are output from the internal color generator and used as the
	background image.
Density	A parameter which is used to adjust the density of the key signals.
DVI	A digital video interface standard.
[Digital Visual Interface]	DVI-I can handle both digital signals and analog signals.
Ethernet	A computer network standard; the 10BASE-T (10 Mbps), 100BASE-TX
	(100 Mbps) or other such standard based on the transmission speed.
Flip Flop system	A bus control mode. The signals selected by the program bus are always output
(PGM/PST system)	as the program images. By executing a transition, the program bus and preset
	bus signals are switched over.
Frame Memory	A memory which can hold the video signals equivalent to one frame.
Frame Synchronizer	A function which enables the asynchronous video signal input to be switched.
Freeze	A function which continues the display of the same image, creating the
	impression that the image has been “frozen”.
Gain	A parameter which adjusts the defocusing of the edges of the key signals.

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