12
c)
Data Capture
•
Automatic selection between 625 WST/VPS
on line 16 of VBI
•
Real-time capture and decoding for WST
Teletext in Hardware, to enable optimized
µ
-
processor throughput
•
Automatic detection of FASTEXT transmission
•
Real-time packet 26 engine in Hardware for
processing accented, G2 and G3 characters
•
Signal quality detector for video and WST/VPS
data types
•
Comprehensive teletext language coverage
•
Full Field and Vertical Blanking Interval (VBI)
data capture of WST data
•
Data Capture for US Closed Caption
•
Data Capture for 525/625 line WST, VPS
(PDC system A) and Wide Screen Signalling
(WSS) bit decoding
•
Automatic selection between 525 WST/625
WST
•
In the 10 page versions inventory of
transmitted Teletext pages stored in the
Transmitted Page Table (TPT) and Subtitle
Page Table (SPT)
•
Text memory for 1 or 10 pages
d) Display
•
Teletext and Enhanced OSD modes
•
Features of level 1.5 WST and US Close
Caption
•
Serial and Parallel Display Attributes
•
Single/Double/Quadruple Width and Height for
characters
•
Scrolling of display region
•
Variable flash rate controlled by software
•
Enhanced display features including
overlining,
underlining and italics
•
Soft colours using CLUT with 4096 colour
palette
•
Globally selectable scan lines per row
(9/10/13/16) and
character matrix [12x10, 12x13, 12x16 (VxH)]
•
Fringing (Shadow) selectable from N-S-E-W
direction
•
Fringe colour selectable
•
Meshing of defined area
•
Contrast reduction of defined area
•
Cursor
•
Special Graphics Characters with two planes,
allowing
four colours per character
•
32 software redefinable On-Screen display
characters
•
4 WST Character sets (G0/G2) in single
device (e.g.
Latin, Cyrillic, Greek, Arabic)
•
G1 Mosaic graphics, Limited G3 Line drawing
characters
•
WST Character sets and Closed Caption
Character set
in single device
Содержание E1 CHASSIS
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