DVP-S7000 (serv.man2) - Sony DVD Service Manual (repair manual). Page 2

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1-1. Series line-up (NTSC)

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1-2. Features

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1-3. External appearance diagram

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1-4. Internal appearance diagram (top view)

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1-5. Disc drive unit

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1-6. Block diagram

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1-7. Kinds and capacity of disc

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1-8. Standard functions of DVD-Video player

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1-9. Compression system used for DVD disc

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1-10. Copy guard system

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1-11. Audio system

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1-12. Parental control

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1-13. Playback area control function

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Essential Points

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DVD-Video Overview

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High-image-quality, high-sound-quality, and multi-function video disc .......................... 22
Arbitrary data amount distribution in accordance with contents ...................................... 23

DVD-Video High Image Quality Technology (1) — Image Compression

Method “MPEG2”

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Reasons for the necessity of data compression ................................................................. 24
MPEG2 profiles and levels ............................................................................................... 24
Hybrid encoding with three major technologies ............................................................... 25
[Brief Memo] What is MPEG? ......................................................................................... 26

Spatial Axis Compression — Discrete Cosine Transform

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Inconspicuous frequency component removal by DCT .................................................... 27

Time Base Compression—Predictive Encoding by Motion Compensation

........ 28

Image construction by predictive encoding for predicting motion from neighboringframes ..... 28
“Motion Compensation” for deriving motion changes only ............................................. 28