參數(shù)資料
型號: TDA938X
廠商: NXP Semiconductors N.V.
英文描述: TV signal processor-Teletext decoder with embedded m-Controller
中文描述: 電視信號處理器與嵌入式米圖文電視解碼器控制器
文件頁數(shù): 75/140頁
文件大小: 570K
代理商: TDA938X
Philips Semiconductors
Preliminary specification
1999 Sep 28
75
TV signal processor-Teletext decoder with
embedded
μ
-Controller
TDA 935X/6X/8X series
Display Positioning
The display consists of the
Screen Colour
covering the whole screen and the
Text Area
that is placed within
the visible screen area. The screen colour extends over a large vertical and horizontal range so that no offset is
needed. The text area is offset in both directions relative to the vertical and horizontal sync pulses.
Figure 36 Display Area Positioning
S
CREEN
C
OLOUR
D
ISPLAY
A
REA
This area is covered by the screen colour. The screen colour display area starts with a fixed offset of 8 us from
the leading edge of the horizontal sync pulse in the horizontal direction. A vertical offset is not necessary.
Horizontal
start at 8 us after leading edge of H-Sync for 56 us
Vertical
line 9, field 1 (321, field 2) to leading edge of vertical
sync (line numbering using 625 Standard)
Table 25 Screen Colour Display Area
Horizontal Sync.
Screen Colour Offset = 8
μ
s
Vertical
Sync.
Text Area
Screen Colour Area
Text Area Start
56
μ
s
0.25 char. offset
Text Area End
Text
Vertical
Offset
6 Lines
Offset
H-Sync delay
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