Panasonic AV-HS300 manual Appendix glossary

Appendix (glossary)

Defined below are the terms used in this manual.

Word	Explanation
AB Bus	A bus control mode. By executing a transition, the A bus and B bus signals are
AB Bus system	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.
Automatic phase adjustment
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 [Digital Visual Interface]	A digital video interface standard.
	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
	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 non-synchronized 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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