Y Signal Processing; Y (Luminance Signal) Processing Flow; Pre-Block Signal Processing - Sony SS-HQ1 Application Notes

10.2. Y Signal Processing

10.2.1. Y (Luminance Signal) Processing Flow

The Y (luminance signal) signal is processed through the block shown below.
AD
PG
Signal processing is divided into two stages: common signal processing (pre-processing), which occurs before
branching into OPD (detection integration) and chroma processing; and main processing, which applies only to
the Y signal.

10.2.2. Pre-Block Signal Processing

Pre-block (PRE / OB INT) signal processing includes the following:
• Replacement with built-in PG signal
• System delay adjustment
• Black level digital clamping
• Blemish detection and compensation -> See 11.2 "CCD blemish detection and compensation".
• Mirror
System Delay
System Delay is to set the signal processing reference points (effective video start positions) in the DSP.
If the reference points are off, the preceding or following OB pixels may appear in the video output, or the
firmware may not work properly.
Be sure to set the system correspondence values shown in the following table.
Parameter
SYSDLY
PRE /
Blemish
Compensation
OB INT
F/W clump
Fig 10.2-1 Overall flow of Y signal processing
-> See 12.5 "Pattern Generator (PG)".
-> See 10.9 "Mirror Function".
Table 10.2-1 System delay correspondence values
Address
CAT8_Byte2_bit0-3
Y main
Process
Chroma
Process
OPD
510H 510H
NTSC PAL NTSC
D[h] D[h]
83
- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
YC- Y-
MIX DAC
DIF
760H 760H
PAL
F[h] F[h]