AK8851 Datasheet, PDF (41/80 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

ASAHI KASEI
[AK8851]
24. MACROVISION Decoder
When a MACROVISION copy-protected signal is fed to the input, the AK8851 decodes the added MACROVISION
information and stores its result in [Macrovision Status Register](R)[Sub Address 0x18]. Configuration of [Macrovision
Status Register] is shown below.
Sub Address 0x18
bit 7
bit 6
Reserved
Reserved
bit 5
Reserved
bit 4
Reserved
bit 3
Reserved
bit 2
CSTYPE
[AGCDET]-bit :
when the Macrovision AGC process is detected, this bit becomes “1”.
[AGCDET]-bit
Status of Macrovision detection
0
AGC Process is not detected
1
AGC Process is detected
[CSDET]-bit :
when the Macrovision Color Stripe Process is detected, this bit becomes “1”.
[CSDET]-bit
Status of Macrovision detection
0
Color Stripe Process is not detected
1
Color Stripe Process is detected
[CSTYPE]-bit :
When CSDET-bit is “1”, this bit shows types of Color Stripe Process.
[CSTYPE]-bit
Status of Macrovision detection
0
Detected Color Stripe is Type 2
1
Detected Color Stripe is Type 3
When CSDET-bit is not “1” , this bit has no meaning.
bit 1
CSDET
Note
Note
Note
bit 0
AGCDET
MS0244-E-03
41
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2005 / 07