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Panasonic HVX200A - Camcorder - 1080p Manual Book page 64

Functions guide
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7. Terminology
24pA (Advance) mode:
Frame Rate Conversion/Converter (FRC): An FRC is a device that converts the frame rate in order to
H Detail:
V Detail:
Detail core:
Skin detail:
Chroma level:
Chroma phase: The chroma phase indicates the level (phase) at which a cyclically oscillating waveform is
Zigzag lines that are often produced at the edges of characters and figures in computer-
graphic (CG) images such as composition images. Jaggies can be eliminated by anti-
aliasing (a process for smoothing the edges of characters and figures).
A recording mode in which 24p video is converted to 60i. The ordinary
24p mode employs 2:3 pulldown to record the first frame as the second field and the
next frame as the third field in simple repetition. In contrast, the 24pA mode uses 2:3
pulldown for the first two frames and 3:2 pulldown for the following two frames, thus
performing 2:3:3:2 pulldown repeatedly. The 2:3:3:2 pulldown system was developed to
minimize image degradation during nonlinear editing in which the video signal is returned
to the native 24p. A video recorded in 24pA mode must be processed with a nonlinear
editing system supporting the Advanced conversion system.
record or play back only the effective frames in source materials recorded using a
variable frame rate function.
There are two modes in the IEEE 1394 interface: 1394/AVC for AV streaming input and
output, and 1394/SBP2 for file input and output. SBP2 is a protocol for controlling
peripheral equipment that is connected to a PC via IEEE 1394.
A function that enhances contours. It electrically emphasizes image borders to sharpen
A function to enhance both edges of vertical lines. "A" indicates the H rate and gives a
positive effect. On the other hand, "B" gives a negative effect. In actual images, the H
Detail affects contour lines in the vertical direction.
A function to enhance the top and bottom edges of horizontal lines. "A" indicates the V
rate and gives a negative effect. In actual images, the V Detail affects contour lines in the
horizontal direction.
When the V/H detail rates are raised, high-frequency noise also increases. Coring
removes noise by slicing the signal during the production of detail signals.
When the skin detail function is turned on, details in skin-color sections are
deemphasized to make the skin appear smoother. This function is used mainly for the
images of newscasters.
Chroma means color and is abbreviated as "C." While the brightness signal (Y signal)
expresses luminance, the chroma signal (C signal) contains color information. In TV
signals, the chroma signal is frequency-multiplexed onto the brightness signal for
transmission. In TV signal processing, chroma often refers to the chrominance signal.
The chroma level is the color signal level (numerical voltage value). The color bar
generated by a signal generator contains white, yellow, cyan, green, magenta, red and
blue, from left to right. Since the brightness signal and color signal levels are strictly
specified, the performance of video equipment can be evaluated by measuring the
brightness signal and color signals.
at a given moment. In the case of a color signal, the phase determines the hue, such as
red, green and skin color. Generally, a phase expresses, in angle, how much a signal
waveform deviates from the reference. On a vector scope, the phase of each color


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