VSP9435B datasheet(22/126 Pages) MICRONAS

22 / 126 page

VSP 94x2A

DATA SHEET

Aug. 16, 2004; 6251-552-1DS

Micronas

2.4.2. Operation Modes

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.

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).

An - Input signal, field A at time n,

Bn - 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.

(An,α) - Output signal, field A at time n, displayed as

raster α,

(An,β) - Output signal, field A at time n, displayed as

raster β,

Table 2–9 on page 22) describes the different scan

rate conversion algorithms of VSP 94x2A and the cor-

responding raster sequences.

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.

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

Fig. 2–31: Explanation of Field and Display Line-

scanning Pattern

Table 2–9: Examples of Panorama Mode

Function

Panorama

Extreme Pan.

Lens

HSCPOSC

2099d

1023d

3999d

HSEG1

96d

HSEG2

192d

HSEG3

288d

HSEG4

384d

HINC0

40d

85d

472d

HINC1

20d

43d

492d

HINC2

000d

HINC3

492d

469d

20d

HINC4

472d

427d

40d

APPLOP

960d

FIELD B

FIELD A

odd lines

even lines

FRAME/FIELD

FRAME

Content of picture

DISPLAY LINE-SCANNING PATTERN

Display raster

Display line-scanning

pattern

Display line-scanning

pattern

Tube, Display raster

odd lines

even lines

VSP9435B Datasheet(PDF) 22 Page - Micronas

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