Panasonic PV-DV901 - Manual (Page 57)

Explanation of Terms
^Digital Video System
In a digital video system, images and sounds are converted
into digital signals and recorded on a tape. This complete
digital recording is capable of recording and playback with
minimal image and sound deterioration.
In addition, it automatically records data, such as Time Code
and date/time, as digital signals.
Compatibility with S-VHS or VHS Cassettes
Because this Palmcorder employs a digital system for
recording image and sound data, it is not compatible with
conventional S-VHS or VHS video equipment that employs
an analog recording system.
The size and shape of the Cassette are also different.
Compatibility with Output Signals
Because AV signal output from the AV signal output jack is
analog (the same as conventional video systems), this
Palmcorder can be connected with S-VHS or VHS video or a
TV for playback.
BFocus
Auto Focus Adjustment
The Auto Focus System automatically moves the internal
focusing tens forward or backward and adjusts the focus so
that the subject can be seen clearly.
However, the Auto Focus System does not function properly
for the following subjects or under the following recording
conditions.
Please use the Manual Focus Mode instead.
1) Recording a subject whose one end is located closer
to the Palmcorder and the other end farther away
from It
• Because Auto Focus makes adjustments at the center
of an image, it may be impossible to focus on a subject
that is located in both foreground and background.
2) Recording a subject behind dirty or dusty glass
• Because the focus is on the dirty glass, the subject
behind the glass will not be focused.
3) Recording a subject in dark surroundings
• Because the light information that comes through the
lens decreases considerably, the Palmcorder cannot
focus correctly.
4) Recording a subject that is surrounded by objects
with glossy surfaces or by highly reflective objects
• Because the Palmcorder focuses on the objects with
glossy surfaces or on highly reflective objects, the
recording subject may become blurry.
5) Recording a fast-moving subject
• Because the focus lens inside moves mechanically, it
cannot keep up with the fast-moving subject.
6) Recording a subject with little contrast
• Because the Palmcorder achieves focus based upon
the vertical lines of an image, a subject with little
contrast, such as a white wall, may become blurry.
■ White Balance Adjustment
Depending on the type of light source, the colors recorded by
the Palmcorder may be affected. In some cases, images
may be recorded with bluish or reddish hue. To minimize the
effect of light on the subject’s color, what is called White
Balance Adjustment becomes necessary.
White Balance Adjustment
White Balance Adjustment recognizes the color of light and
makes adjustment so that the white color will become pure
white.
Auto White Balance Adjustment
This Palmcorder stores settings that are optimal for several
kinds of general light sources. The Palmcorder determines
the hue of light that it receives through the lens and White
Balance Sensor, thereby judging the recording condition,
and selects the closest hue setting. This function is called
Auto White Balance Adjustment.
However, since white balance settings for only several kinds
of light sources are stored, the Auto White Balance Function
does not operate properly when recording occurs under light
that is out of the range of the setting values.
■ Time Code
Time Code signals are data that indicate time measured in
hours, minutes, seconds, and frames (30 frames per
second.) If this data is included in a recording, an address is
assigned to each image on the tape.
• The Time Code Is automatically recorded as a part of the
sub-code at each recording.
• When a new (previously unrecorded) Cassette is inserted,
the Time Code automatically starts from zero. If a recorded
Cassette is inserted, the Time Code picks up from the point
where the last scene was recorded. (In this case, when the
Cassette is inserted, the zero display [OhOOmOOsOOf] may
appear, but the Time Code starts from the previous value.)
• The Time Code cannot be reset to zero.
• Unless the Time Code is continuously recorded from the
beginning of a tape, accurate editing may not be possible.
To ensure that the Time Code will be recorded with no
breaks, we recommend the use of the Camera Search
Function (^ 20) or the Blank Search Function (-> 29)
before recording a new scene.
■ Memory Stop Function
The Memory Stop Function is useful for the following
operations.
Rewinding or fast-forwarding a tape to a desired
position
1 Set [C.DISPLAY] on the [DISPLAY SETUP]
Sub-Menu to [MEMORY].
2 Reset the Tape Counter to zero at the tape
position from which you want to play it back
later. (-♦ 10,16)
3 Start playback or recording.
4 When playback or recording is over: slide the
[OFF/ON/MODE] Switch from on to put the
Palmcorder in the VCR Mode.
• The [VCR] Lamp lights up.
5 Rewind the tape.
• The tape automatically stops approximately at the
position where the counter was set to zero.
Stopping editing automatically during audio dubbing
1 Set [C.DISPLAY] on the [DISPLAY SETUP]
Sub-Menu to [MEMORY].
2 Reset the Tape Counter to zero at the position
where you want to stop editing.
3 Play back the still pictures where you want to
start audio dubbing.
4 Start audio dubbing. (-> 33)
• Audio dubbing automatically stops at the position
where the counter was set to zero.
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