Panasonic DMR-EA18K Operating Instructions Manual

Contents

Panasonic DMR-EA18K Operating Instructions Manual Manual pdf 69 page image

69RQT9048ReferenceGlossaryBitstreamThis is a signal compressed and converted into digital form. It is convertedback to a multi-channel audio signal, e.g., 5.1-channel, by a decoder.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. Thisis called 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 on some discsinto two channels. It is useful when you want to listen to the 5.1-channel audiorecorded on DVDs through your TV’s speakers. Some discs prohibit down-mixing.If this is the case, this unit can only output 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 are possible.Dynamic rangeDynamic range is the difference between the lowest level of sound that can be heardabove the noise of the equipment and the highest level of sound before distortionoccurs. Dynamic range compression means reducing the gap between the loudestand softest sounds. This means you 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 fields 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 finalize DVD-R,DVD-R DL, DVD-RW (DVD-Video format), +R,and +R DL on the unit. Afterfinalizing, the disc becomes play-only and you can no longer record or edit.However, finalized DVD-RW can be formatted to become recordable.FolderThis is a place on the memory card where groups of data are storedtogether. In the case of this unit, it refers to the place where stillpictures (JPEG) are stored.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),+RW and SD card on this unit.Formatting irrevocably erases all contents.Frame and fieldFrame refers to the single images that constitute the video you seeon your TV. Each frame consists of 2 fields.u rFrame Field FieldA frame still shows 2 fields, so there may be some blurringbetween them, but picture quality is generally better.A field still shows less picture information so it may be rougher, butthere is no blurring.••HDMI (High-Definition Multimedia Interface)HDMI is a next-generation digital interface for consumerelectronic products. Unlike conventional connections, it transmitsuncompressed digital video and audio signals on a single cable. Thisunit supports high-definition video output (720p, 1080i, and 1080p)from HDMI AV OUT terminal. To enjoy high-definition video a highdefinition compatible television is required.JPEG (Joint Photographic Experts Group)This is a system used for compressing/decoding color still pictures.If you select JPEG as the storage system on digital cameras, etc.,the data will be compressed to 1/10-1/100 of its original size. Thebenefit of JPEG is less deterioration in picture quality consideringthe degree of compression.MP3 (MPEG Audio Layer 3)An audio compression method that compresses audio toapproximately one-tenth of its size without any significant loss ofaudio quality.Pan & Scan/LetterboxIn general, DVD-Video are produced with the intention that they willbe viewed on a widescreen TV (16:9 aspect ratio), so images oftendon’t fit 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 picturefills the screen.Letterbox: Black bands appear at the top andbottom of the picture so the pictureitself appears in an aspect ratio of 16:9.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.1080iIn one high definition image, 1080 alternating scan lines pass every1/60th of a second to create an interlace image. Because 1080imore than doubles current television broadcasts of 480i, the detail ismuch clearer and creates a more realistic and rich image.1080pIn one high definition image, 1080 scan lines pass at the sametime every 1/60th of a second to create a progressive image. Sinceprogressive video does not alternate scan lines like interlace, thereis a minimal amount of screen flicker.720pIn one high definition image, 720 scan lines pass at the same timeevery 1/60th of a second to create a progressive image. Sinceprogressive video does not alternate scan lines like interlace, thereis a minimal amount of screen flicker.