VSP 94x2A
DATA SHEET
Table 2–9: Examples of Panorama Mode
Table 2–9 on page 22) describes the different scan
rate conversion algorithms of VSP 94x2A and the cor-
responding raster sequences.
Function
Panorama Extreme Pan. Lens
Fig. 2–32 on page 23 explains the 50/60 Hz interlaced
to the 100/120 Hz interlaced conversion including the
field signal, the raster organization and the memory
timing for AABB.
HSCPOSC 2099
1023
3999
d
d
d
HSEG1
HSEG2
HSEG3
HSEG4
HINC0
HINC1
HINC2
HINC3
HINC4
APPLOP
96
96
96
d
d
d
192
288
384
192
288
384
192
288
384
472
492
000
d
d
d
d
d
d
d
d
d
d
d
d
A still field can be displayed using FREEZE command.
For the improvement of VCR signals, the chrominance
can be shifted one line upwards by CHRSHFT
40
20
85
43
d
d
d
d
FRAME/FIELD
FRAME
FIELD A
odd lines
000
492
472
960
000
469
427
960
d
d
d
d
d
d
d
d
FIELD B
20
40
d
d
even lines
960
Content of picture
d
DISPLAY LINE-SCANNING PATTERN
2.4.2. Operation Modes
Display line-scanning
pattern
TV
Display raster
odd lines
There are four operation modes defined. The first
mode is simple AABB, where each stored field in the
memory is displayed double times on the TV screen.
The second and third mode are AAAA and BBBB, in
which only one field phase will be displayed on the TV
screen. There is also a fourth mode AAAA mode with
αβαβ raster possible. Fig. 2–31 explains the picture
and the display raster.
even lines
Display line-scanning
pattern
Tube, Display raster
The interlaced input signal (e.g. 50 Hz PAL or 60 Hz
NTSC) is composed of a field A (odd lines) and a field
B (even lines).
Fig. 2–31: Explanation of Field and Display Line-
scanning Pattern
n
A - Input signal, field A at time n,
n
B - Input signal, field B at time n
The field information describes the picture content.
The output signal, which could contain different picture
contents (e.g. field A, field B), can be displayed with
the display raster α or β.
n
(A ,α) - Output signal, field A at time n, displayed as
raster α,
n
(A ,β) - Output signal, field A at time n, displayed as
raster β,
22
Aug. 16, 2004; 6251-552-1DS
Micronas
MICRONAS [ MICRONAS ]
