Panasonic Diga DMR-XS400 Operating Instructions Manual

Contents

ReferenceVQT3C77109JPEG (Joint Photographic Experts Group)This is a system used for compressing/decoding colour stillpictures. If you select JPEG as the storage system on digitalcameras, etc., the data will be compressed to 1/10–1/100 ofits original size. The benefit of JPEG is less deterioration inpicture quality considering the degree of compression.LNB (Low Noise Block - converter)This is attached to the satellite dish, which will amplify theweak signal that was received, lower the frequency, andinput into the tuner.LPCM (Linear PCM)These are uncompressed digital signals, similar to thosefound on CDs.MPEG2 (Moving Picture Experts Group)A standard for efficiently compressing and expanding colourvideo. MPEG2 is a compression standard used for DVD andsatellite based digital broadcasting.MPEG-4 AVC/H.264A standard for efficiently compressing and expanding colourvideo. MPEG-4 AVC/H.264 is an encoding method used forrecording of the High Definition video.MP3 (MPEG Audio Layer 3)An audio compression method that compresses audio toapproximately one tenth of its size without any considerableloss of audio quality.Pan&Scan/LetterboxIn general, DVD-Video are produced with the intention thatthey be viewed on a widescreen TV (16:9 aspect ratio), soimages often don’t fit regular (4:3 aspect ratio) TVs. Twostyles of picture, “Pan & Scan” and “Letterbox”, deal with thisproblem.Progressive/InterlaceInterlace is a conventional image signal that displays theimage in 2 phases by splitting the display into odd and evenscans.Progressive will display whole image in 1 scan. Therefore, itwill give High Definition image without flickering comparedwith interlace.ProtectionYou can prevent accidental deletion by setting writingprotection or deletion protection.Sampling frequencySampling is the process of converting the heights of soundwave (analog signal) samples taken at set periods into digits(digital encoding). Sampling frequency is the number ofsamples taken per second, so larger numbers mean morefaithful reproduction of the original sound.Signal QualityThis is the guide for checking the aerial direction. Thenumbered values displayed do not indicate the strength ofthe signal, but the quality of the signal (the signal to noiseratio, or “S/N”). The channels you can receive are affectedby weather conditions, seasons, time (day/night), region,length of the cable that is connected to the aerial, etc.ThumbnailThis refers to a miniature representation of a picture used todisplay multiple pictures in the form of a list.TransponderThe signals of a broadcasting station are received by atransponder on a satellite. The transponder converts them tofrequencies and sends them to satellite dishes near theground. A transponder can broadcast several TV and radioprogrammes or data in parallel.1080iIn one High Definition image, 1080 (1125) alternating scanlines pass every 1/50 th of a second to create an interlaceimage. Because 1080i (1125i) more than doubles current TVbroadcasts of 480i (525i), the detail is much clearer andcreates a more realistic and rich image.1080pIn one High Definition image, 1080 (1125) scan lines pass atthe same time every 1/50 th of a second to create aprogressive image. Since progressive video does notalternate scan lines like interlace, there is a minimal amountof screen flicker.720pIn one High Definition image, 720 (750) scan lines pass atthe same time every 1/50 th of a second to create aprogressive image. Since progressive video does notalternate scan lines like interlace, there is a minimal amountof screen flicker.Pan & Scan: The sides are cut off so thepicture fills the screen.Letterbox: Black bands appear at thetop and bottom of the pictureso the picture itself appears inan aspect ratio of 16:9.

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