Sony DVP S530D Bedienungsanleitung PDF herunterladen (Seite 14)

Video and Audio Processing

After the servos have begun, RF data will come from the optical assembly

within the base unit. The “eye pattern” RF data is split into two paths to

provide:

1. Feedback signal to lock the servos; and

2. Video and audio information.

In the A/V processing chain, the RF data is processed by the following

ICs:

Audio / Video Processing ICs

Name IC

Audio

Video

Purpose

RF Amp IC001 A/V

(both)

Matrix the optical outputs to produce

signals for servo and A/V circuits

ARP2 IC303 A/V

(both)

•

16 to 8 bit Demodulation

•

Descrambles the main data using

external memory IC304

•

Generates bit clock

Decoder IC401 A/V

(both)

Video

•

MPEG decompression using the

external IC402 and IC403

memories

•

Crops the 16x9 image for a 4x3 TV

picture

•

Controls spindle motor speed

•

Sends disc’s control and menu

data to IC202

•

On screen display graphics

•

D/A Converter (analog video

output)

Audio

•

MPEG audio decompression

•

Dolby Digital AC-3 decompression

using external SRAM IC402 /

IC403

DSP IC501 A

•

Sound enhancements when there

is no AC-3 received (Rear channel

delay)

•

Downmixing of 6 channel AC-3

into 2 (L/R) channels

•

Dolby Prologic decoding

•

Digital coax and optical output

•

Rear channel delay

•

Front/rear level balancing

•

Test tone generation

DAC IC902 A

Digital to analog converter for the front

left and right channels

DACs IC905-

IC907

A 3 Digital to analog converters for the

six AC-3 channels

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 91 92

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