Panasonic DVD-LV50 Operating Instructions Manual

Also see for DVD-LV50 - Portable DVD Player: Operating instructions

33 RQT6450 ReferenceBitstreamThis is the digital form of multiple channel audiodata (e.g., 5.1 channel) before it is decoded intoits various channels.DecoderA decoder restores the coded audio signals onDVDs to normal. This is called decoding.Dolby DigitalThis is a method of coding digital signals devel-oped by Dolby Laboratories. Apart from stereo(2-channel) audio, these signals can also bemulti-channel audio. A large amount of audioinformation can be recorded on the disc usingthis method.Dolby Pro LogicA surround system where a 4-channel audiotrack is recorded as 2 channels and then is re-stored to 4 channels for play. The surround chan-nel is monaural and can reproduce up to 7 kHz.DTS (Digital Theater Systems)This surround system is used in many movie the-aters around the world. There is good separationbetween the channels, so realistic sound effectsare possible.Dynamic rangeDynamic range is the difference between thelowest level of sound that can be heard abovethe noise of the equipment and the highest levelof sound before distortion occurs.Frame still and field stillA still is shown when you pause a movingpicture. A frame still is made up of 2 alternatingfields, so the picture may appear blurred, butoverall quality is high.A field still is not blurred, but it has only half theinformation of a frame still so picture quality islower.I/P/BMPEG 2, the video compression standard adopt-ed for use with DVD-Video, codes frames usingthese 3 picture types.I: Intra coded pictureThis picture has the best quality and is thebest to use when adjusting the picture.P: Predictive coded pictureThis picture is calculated based on past I orP-pictures.B: Bidirectionally-predictive coded pictureThis picture is calculated by comparing pastand future I and P-pictures so it has thelowest volume of information.Linear PCM (pulse code modulation)These are uncompressed digital signals, similarto those found on CDs.Playback control (PBC)If a Video CD has playback control, you canselect scenes and information with menus.GlossaryApparatus Claims of U.S. Patent Nos. 4,631,603, 4,577,216, and 4,819,098, licensed forlimited viewing uses only.This product incorporates copyright protection technology that is protected by method claimsof certain U.S. patents and other intellectual property rights owned by Macrovision Corporationand other rights owners. Use of this copyright protection technology must be authorized byMacrovision Corporation, and is intended for home and other limited viewing uses only unlessotherwise authorized by Macrovision Corporation. Reverse engineering or disassembly isprohibited.