Panasonic Diga DMR-EZ37 Operating Instructions Manual

Also see for Diga DMR-EZ37: Firmware instructions

Contents

82RQT8849GlossaryBitstreamThis is a signal compressed and converted into digital form. It isconverted back to a multi-channel audio signal, e.g., 5.1-channel, by adecoder.CPRM (Content Protection for Recordable Media)CPRM is technology used to protect broadcasts that are allowed tobe recorded only once. Such broadcasts can be recorded only withCPRM-compatible recorders and discs.DecoderA decoder restores the coded audio signals on DVDs to normal. This iscalled decoding.Dolby DigitalThis is a method of coding digital signals developed by DolbyLaboratories. Apart from stereo (2-channel) audio, these signals canalso be multi-channel audio. A large amount of audio information canbe recorded on one disc using this method.Down-mixingThis is the process of remixing the multi-channel audio found onsome discs into two channels. It is useful when you want to listen tothe 5.1-channel audio recorded on DVDs through your TV’s speakers.Some discs prohibit down-mixing. If this is the case, this unit can onlyoutput the front two channels.DTS (Digital Theater Systems)This surround system is used in many movie theaters. There is goodseparation between the channels, so realistic sound effects arepossible.Dynamic rangeDynamic range is the difference between the lowest level of sound thatcan be heard above the noise of the equipment and the highest levelof sound before distortion occurs. Dynamic range compression meansreducing the gap between the loudest and softest sounds. This meansyou can hear dialog clearly at low volume.Film and VideoDVD-Video are recorded using either film or video. The unit candetermine which type has been used, then uses the most suitablemethod of progressive output.Film is 24 or 30 frames per second, with motion picture film generallybeing 24 frames per second.Video is 60 fields per second (2 fi elds making up 1 frame).FinalizeA process that makes play of a recorded CD-R, CD-RW, DVD-R, etc.possible on equipment that can play such media. You can fi nalizeDVD-R, DVD-R DL, DVD-RW (DVD-Video format), +R, and +R DL onthe unit. After finalizing, the disc becomes play-only and you can nolonger record or edit. However, fi nalized DVD-RW can be formatted tobecome recordable.FormattingFormatting is the process of making media such as DVD-RAMrecordable on recording equipment.You can format DVD-RAM, DVD-RW (only as DVD-Video format) and+RW on this unit.Formatting irrevocably erases all contents.Frame and fi eldFrame refers to the single images that constitute the video you see onyour TV. Each frame consists of 2 fields. Frame Field FieldA frame still shows 2 fi elds, so there may be some blurring betweenthem, but picture quality is generally better.A fi eld still shows less picture information so it may be rougher, butthere is no blurring.JPEG (Joint Photographic Experts Group)This is a system used for compressing/decoding color still pictures. Ifyou select JPEG as the storage system on digital cameras, etc., thedata will be compressed to 1/10-1/100 of its original size. The benefit ofJPEG is less deterioration in picture quality considering the degree ofcompression.MP3 (MPEG Audio Layer 3)An audio compression method that compresses audio to approximatelyone-tenth of its size without any signifi cant loss of audio quality. Youcan play MP3s you have recorded onto CD-R and CD-RW.Pan & Scan/LetterboxIn general, DVD-Video are produced with the intention that they will beviewed on a widescreen TV (16:9 aspect ratio), so images often don’tfi t regular TVs (4:3 aspect ratio). 2 styles of picture, “Pan & Scan” and“Letterbox”, deal with this problem.Pan & Scan: The sides are cut off so the picturefi lls the screen.Letterbox: Black bands appear at the top andbottom of the picture so the pictureitself appears in an aspect ratio of16:9.Progressive/InterlaceNTSC, the video signal standard, has 480 interlaced (i) scan lines,whereas progressive scanning uses twice the number of scan lines.This is called 480p.Using progressive output, you can enjoy the high-resolution videorecorded on media such as DVD-Video.Your TV must be compatible to enjoy progressive video.ProtectionYou can prevent accidental erasure by setting writing protection orerasure protection.Sampling frequencySampling is the process of converting the heights of sound wave(analog signal) samples taken at set periods into digits (digitalencoding). Sampling frequency is the number of samples taken persecond, so larger numbers mean more faithful reproduction of theoriginal sound.ThumbnailThis refers to a miniature representation of a picture used to displaymultiple pictures in the form of a matrix.