參數(shù)資料
型號(hào)： SAA5677HL
廠商： NXP Semiconductors N.V.
英文描述： Enhanced TV microcontrollers with On-Screen Display (OSD)
中文描述： 與微控制器在強(qiáng)化電視屏幕顯示（OSD）
文件頁(yè)數(shù)： 55/116頁(yè)
文件大?。?/td> 532K
代理商： SAA5677HL
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2002 May 06
55
Philips Semiconductors
Objective specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA567x; SAA569x
22 DATA CAPTURE
The Data Capture section (see Fig.17) takes in the analog
Composite Video and Blanking Signal (CVBS), and
extracts the required data from it in the digital domain. The
dataisthendecodedandstoredinmemory.Thefirststage
converts the analog CVBS signal to digital form, using
ADC sampling at 12 MHz. Data and clock recovery is then
performed by a Multi-rate Video Input Processor (MulVIP).
Next, the following types of data are extracted: WST
Teletext (625/525), VPS, Closed Caption (CC) and WSS.
The extracted data is stored in either memory (DRAM) via
the Memory Interface or in SFR locations.
22.1
Data Capture features
Two CVBS inputs
Video Signal Quality detector
Data Capture for 625-line WST
Data Capture for 525-line WST
Data Capture for line 21 data service (Closed Caption)
Data Capture for VPS data (PDC system A)
Data Capture for WSS bit decoding
Automatic selection between 525 WST/625 WST
Automatic selection between 625 WST/VPS on
line 16 of Vertical Blanking Interval (VBI)
Real-time capture and decoding for WST Teletext in
hardware, to enable optimized microprocessor
throughput
Up to 12 pages stored on-chip
Inventory of transmitted Teletext pages stored in the
Transmitted Page Table and Subtitle Page Table
Automatic detection of Fastext transmission
Real-time packet 26 engine in hardware for processing
accented, G2 and G3 characters
Signal quality detector for WST/VPS data types
Comprehensive Teletext language coverage
Full-Field and VBI Data Capture of WST data.
handbook, full pagewidth
ADC
data<7:0>
VCS
SYNC_FILTER
TTD
TTC
DATA SLICER
AND
CLOCK RECOVERY
output data to
memory interface
output data to SFRs
MBK963
ACQUISITION
FOR
WST/VPS
ACQUISITION
FOR
CC/WSS
CVBS
SWITCH
CVBS
CVBS0
CVBS1
ACQUISITION
TIMING
SYNC
SEPARATOR
Fig.17 Data Capture block diagram.
相關(guān)PDF資料
PDF描述
SAA5700GP Chinese Character System Teletext CCST decoder
SAA5700 Chinese Character System Teletext CCST decoder
SAA6579 Radio Data System RDS demodulator
SAA6581 RDS/RBDS demodulator
SAA6581T RES 15.8K OHM 1/16W .5% 0603 SMD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA567X 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display (OSD)
SAA5695HL 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display (OSD)
SAA5697HL 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display (OSD)
SAA569X 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced TV microcontrollers with On-Screen Display (OSD)
SAA5700 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Chinese Character System Teletext CCST decoder
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