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參數(shù)資料
| 型號(hào)： | ADV7188 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat SDTV Video Decoder with Fast Switch Overlay Support |
| 中文描述： | 標(biāo)清多格式視頻解碼器支持快速開關(guān)重疊 |
| 文件頁(yè)數(shù)： | 23/112頁(yè) |
| 文件大?。?/td> | 943K |
| 代理商： | ADV7188 |
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ADV7188
SYNC PROCESSING
The ADV7188 extracts syncs embedded in the video data
stream. There is currently no support for external HS/VS
inputs. The sync extraction has been optimized to support
imperfect video sources such as videocassette recorders with
head switches. The actual algorithm used employs a coarse
detection based on a threshold crossing, followed by a more
detailed detection using an adaptive interpolation algorithm.
The raw sync information is sent to a line-length measurement
and prediction block. The output of this block is then used to
drive the digital resampling section to ensure that the ADV7188
outputs 720 active pixels per line.
Rev. 0 | Page 23 of 112
The sync processing on the ADV7188 also includes the following
specialized postprocessing blocks that filter and condition the raw
sync information retrieved from the digitized analog video.
VSYNC Processor. This block provides extra filtering of the
detected VSYNCs to give improved vertical lock.
HSYNC Processor. The HSYNC processor is designed to
filter incoming HSYNCs that have been corrupted by
noise, providing much improved performance for video
signals with stable time base but poor SNR.
VBI DATA RECOVERY
The ADV7188 can retrieve the following information from the
input video:
Wide-screen signaling (WSS)
Copy generation management system (CGMS)
Closed caption (CC)
Macrovision protection presence
Gemstar-compatible data slicing
Teletext
The ADV7188 is also capable of automatically detecting the
incoming video standard with respect to
Color subcarrier frequency
Field rate
Line rate
The ADV7188 can configure itself to support PAL-
(B/G/H/I/D/M/N), PAL-combination N, NTSC-M, NTSC-J,
SECAM 50 Hz/60 Hz, NTSC-4.43, and PAL-60.
GENERAL SETUP
Video Standard Selection
The VID_SEL[3:0] register allows the user to force the digital
core into a specific video standard. Under normal circumstances,
this should not be necessary. The VID_SEL[3:0] bits default to
an autodetection mode that supports PAL, NTSC, SECAM, and
variants thereof. The following section describes the autodetec-
tion system.
Autodetection of SD Modes
In order to guide the autodetect system, individual enable bits
are provided for each of the supported video standards. Setting
the relevant bit to 0 inhibits the standard from being automatically
detected. Instead, the system picks the closest of the remaining
enabled standards. The results of the autodetection can be read
back via the status registers. See the Global Status Registers
section for more information.
VID_SEL[3:0] Address 0x00 [7:4]
Table 24. VID_SEL Function
VID_SEL[3:0]
Description
0000 (default)
Autodetect (PAL-BGHID) <–> NTSC-J
(without pedestal), SECAM
0001
Autodetect (PAL-BGHID) <–> NTSC-M
(with pedestal), SECAM
0010
Autodetect (PAL N) (pedestal) <–> NTSC-J
(no pedestal), SECAM
0011
Autodetect (PAL N) (with pedestal) <–> NTSC-M
(with pedestal), SECAM
0100
NTSC-J (1)
0101
NTSC-M (1)
0110
PAL-60
0111
NTSC-4.43 (1)
1000
PAL-BGHID.
1001
PAL-N (= PAL BGHID (with pedestal))
1010
PAL-M (without pedestal)
1011
PAL-M
1100
PAL-combination N
1101
PAL-combination N (with pedestal)
1110
SECAM
1111
SECAM (with pedestal)
AD_SEC525_EN Enable Autodetection of SECAM 525
Line Video, Address 0x07 [7]
0 (default)—Disables the autodetection of a 525-line system
with a SECAM style, FM-modulated color component.
1—Enables autodetection.
AD_SECAM_EN Enable Autodetection of SECAM,
Address 0x07 [6]
0—Disables the autodetection of SECAM.
1 (default)—Enables autodetection.
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PDF描述 |
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| ADV7189B | Multiformat SDTV Video Decoder |
| ADV7189BBSTZ268H | Multiformat SDTV Video Decoder |
| ADV7189BKSTZ10F | Multiformat SDTV Video Decoder |
| ADV7189 | Multiformat SDTV Video Decoder |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7188BSTZ | 功能描述:IC DECODER VID MULTIFORM 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7189 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189BBSTZ | 功能描述:IC VIDEO DECODER SDTV 80-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| ADV7189BBSTZ268H | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
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