DDP3310B Datasheet, PDF (34/60 Pages) Micronas – Display and Deflection Processor

DDP 3310B
ADVANCE INFORMATION
3.3.1. Scaler Adjustment
In case of linear scaling, most of the scaler registers
need not be set. Only the scaler mode, active video
length, and the fixed scaler increments (SCINC1 /
SCINC2) must be written.
For adjustment of the scaler for non-linear scaling, the
parameters given in Table 3–4 should be used. An
example for “panorama vision” mode is depicted in
Fig. 3–4. It shows the scaling of the input signal and
the variation of the scaling factor during the active
video line. The scaling factor starts below 1, i.e. for the
borders the video data is expanded and after it
exceeds 1 it is compressed. When the picture center is
reached, the scaling factor is kept constant. At the sec-
ond border the scaling factor changes back symmetri-
cally.
Compression
Ratio
1
Border
Zoom
Center
Compression
Border
Zoom
t
Input Signal
Output Signal
Fig. 3–4: Scaler operation for “panorama” mode
Table 3–4: Setup values for non-linear scaler modes
Mode
Register
SCINC1
SCINC2
SCINC
FFLIM
SCW1 - 0
SCW1 - 1
SCW1 - 2
SCW1 - 3
SCW1 - 4
SCW2 - 0
SCW2 - 1
SCW2 - 2
SCW2 - 3
SCW2 - 4
27 MHz
32 MHz
‘waterglass’
border 35 %
‘panorama’
border 30 %
‘waterglass’
border 35 %
‘panorama’
border 30 %
center 3/4 center 5/6 center 4/3 center 6/5 center 3/4 center 5/6 center 4/3 center 6/5
1099
1064
1024
1024
1195
1122
1024
1024
1024
1024
259
407
1024
1024
305
489
60
65
56
38
54
42
68
46
715
717
758
796
833
845
831
871
20
10
106
106
51
37
109
126
156
123
106
106
161
166
125
126
202
236
273
292
256
257
291
310
338
349
273
292
366
386
307
310
358
359
379
398
417
423
416
436
20
10
186
177
51
37
168
175
156
123
186
177
161
166
184
175
384
417
354
363
373
368
350
359
520
530
354
363
483
497
366
359
540
540
540
540
534
534
534
534
34
Micronas