Sony NEXFS100U Operating Guide - Page 103
Maintenance and precautions, About the AVCHD format, About GPS
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Maintenance and precautions About the AVCHD format 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 ×1080/60i, 1920 ×1080/24p, 1280 ×720/60p, 1440 × 1080/60i 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. About GPS 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. Continued , 103 Additional Information