HD49801FB Datasheet, PDF (18/43 Pages) List of Unclassifed Manufacturers – Digital Signal Processing IC for CCD Cameras

HD49801FB
State Data A8 (1 to 3): Encoder (FADE)
This data determines the fade level for the luminance and chroma signals.
HD49801FB
Address H
Address
Data
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
Y fade
1
1 1 1 0 0 0 0 D1 D2 D3 D4 D5 D6 D7 D8
C fade
2
1 1 1 0 1 0 0 D1 D2 D3 D4 D5 D6 D7 D8
Y inversion
C inversion
3
1 1 1 0 0 1 0 D1 D2
1: Y fade
D8 = 1: Through
When D8 = 0, the following weighting formula is used.
D7 × 2^–1 + D6 × 2^–2 + D5 × 2^–3 + D4 × 2^–4 + D3 × 2^–5 + D2 × 2^–6
D1 is fixed at 0.
Note: However, since the encoder fade precision is inadequate, improved fading characteristics can be
obtained by using the iris function for Y fading.
2: C fade
D8 × 2⁰ + D7 × 2^–1 + D6 × 2^–2 + D5 × 2^–3 + D4 × 2^–4 + D3 × 2^–5 + D2 × 2^–6 + D1 × 2^–7
Range: 1 to 255/128
3: Y and C inversion
D1 = 0; D2 = 0: Normal
D1 = 1; D2 = 1: Inversion
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