Sony DNW-A75 Maintenance Manual page 214

A-4. Signal Processing
Playback of Betacam SX Tape
This unit uses multiple-tracing technology in which the
number of playback heads is larger than that of recording
heads. This technology requires no high-precision track-
ing.
The data played back by multiple heads is error-corrected
using an inner code by an ECC decoder. After that, valid
data is selected from memory according to error informa-
tion and error-corrected using an outer code.
The error-corrected data is separated into the video data
and audio data. The video data is demodulated its original
bit-rate by the MPEG2 4:2:2P@ML decoder, then it is
input to the Video process.
The audio data is directly input to the Audio process after
the separation.
(Refer to Fig. A-4-3.)
PB
Head
Tape
(Betacam SX)
A-8
MPEG 2
4:2:2P@ML
Decoder
V
A
RF ECC
EQ Decoder
V
D/A
Video
Process
D/A
D/A
Audio
Process
V
A
Interface
A
SDTI(SX)
V
Interface
A
SDTI-CP
V
Interface
Fig. A-4-3
Analog Video Outputs
(Composite)
Analog Video Output
(Component)
Analog Audio Outputs
Digital Audio Outputs
(AES/EBU)
SDI
SDI Outputs
SDTI(SX) Outputs
Option BKNW-118
SDTI-CP Outputs
Option BKNW-124
DNW-A75/A75P