Sony dvp-s530d User Manual
9
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:
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:
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
or
Video
Purpose
RF Amp
IC001
A/V
(both)
(both)
Matrix the optical outputs to produce
signals for servo and A/V circuits
signals for servo and A/V circuits
ARP2
IC303
A/V
(both)
(both)
•
16 to 8 bit Demodulation
•
Descrambles the main data using
external memory IC304
•
Generates bit clock
Decoder
IC401
A/V
(both)
(both)
Video
•
MPEG decompression using the
external IC402 and IC403
memories
external IC402 and IC403
memories
•
Crops the 16x9 image for a 4x3 TV
picture
picture
•
Controls spindle motor speed
•
Sends disc’s control and menu
data to IC202
data to IC202
•
On screen display graphics
•
D/A Converter (analog video
output)
output)
Audio
•
MPEG audio decompression
•
Dolby Digital AC-3 decompression
using external SRAM IC402 /
IC403
using external SRAM IC402 /
IC403
DSP
IC501
A
•
Sound enhancements when there
is no AC-3 received (Rear channel
delay)
is no AC-3 received (Rear channel
delay)
•
Downmixing of 6 channel AC-3
into 2 (L/R) channels
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
left and right channels
DACs
IC905-
IC907
IC907
A
3 Digital to analog converters for the
six AC-3 channels
six AC-3 channels