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Maintenance and precautions
What is the AVCHD format?
The AVCHD format is a high definition
digital video camera format used to record
an HD (high definition) signal, using
efficient data compression coding
technology. The MPEG-4 AVC/H.264
format is adopted to compress video data,
and the Dolby Digital or Linear PCM
system is used to compress audio data.
The MPEG-4 AVC/H.264 format is capable
of compressing images at higher efficiency
than that of the conventional image
compressing format.
• Because the AVCHD format uses a data
compression system, images may be distorted in
scenes where the image, angle, or brightness
changes drastically. This is not a malfunction.
Recording and playback on your
camcorder
Based on the AVCHD format, your
camcorder records with the HD (high
definition) image quality. In addition to HD
(high definition) image quality, your
camcorder is capable of recording a
standard definition (SD) signal in the
conventional MPEG2 format.
Video signal
*
: MPEG-4 AVC/H.264
1920
×
1080/50i, 1920
×
1080/25p,
1280
×
720/50p, 1440
×
1080/50i
Audio signal: Dolby Digital 2ch, Linear
PCM 2 ch
Recording media: memory card, flash
memory unit (sold separately)
* Data recorded in AVCHD format other than the
above mentioned cannot be played back on your
camcorder.
• 1080i specification
A high definition specification which utilizes
1,080 effective scanning lines and the interlace
system.
• 720p specification
A high definition specification which utilizes
720 effective scanning lines and the progressive
system.
The GPS (Global Positioning System) is a
system that calculates geographical location
from highly accurate US space satellites.
This system allows you to pinpoint your
exact location on the earth.
The GPS satellites are located in 6 orbits,
20,000 km above the earth. The GPS
system consists of 24 or more GPS
satellites. A GPS receiver receives radio
signals from the satellites, and calculates
the current location of the receiver based on
the orbital information (almanac data) and
travel time of the signals, etc.
Determining a location is called
“triangulating.” A GPS receiver can
determine the location’s latitude and
longitude by receiving signals from 3 or
more satellites.
• As the positions of GPS satellites vary
constantly, it may take longer to determine the
location or the receiver may not be able to
determine the location at all, depending on the
location and time you use the camcorder.
• “GPS” is a system for determining geographic
location by triangulating radio signals from GPS
satellites. Avoid using the camcorder in places
where radio signals are blocked or reflected,
such as a shadowy place surrounded by
buildings or trees, etc. Use the camcorder in
open sky environments.
• You may not be able to record location
information at locations or in situations where
radio signals from the GPS satellites do not
reach the camcorder as follows.
– In tunnels, indoors or under the shade of
buildings.
– Between tall buildings or at narrow streets
surrounded by buildings.
– In underground locations, locations
surrounded by dense trees, under an elevated
bridge, or in locations where magnetic fields
are generated, such as near high voltage
cables.
– Near devices that generate radio signals of the
same frequency band as the camcorder: near
1.5 GHz band mobile telephones, etc.
About the AVCHD format
About GPS
Continued
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