參數(shù)資料
型號： ADV601LCJST
廠商： ANALOG DEVICES INC
元件分類： 消費家電
英文描述： Ultralow Cost Video Codec
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP120
封裝： LQFP-120
文件頁數(shù)： 7/52頁
文件大?。?/td> 606K
代理商： ADV601LCJST
ADV601
–7–
REV. 0
THE PROGRAMMABLE QUANTIZER
This block quantizes the filtered image based on the response
profile of the human visual system. In general, the human eye
cannot resolve high frequencies in images to the same level of
accuracy as lower frequencies. Through intelligent “quantiza-
tion” of information contained within the filtered image, the
ADV601 achieves compression without compromising the visual
quality of the image. Figure 7 shows the encode and decode
data formats used by the quantizer.
Figure 8 shows how a typical quantization pattern applies over
Mallat block data. The high frequency blocks receive much larger
quantization (appear darker) than the low frequency blocks (appear
lighter). Looking at this figure, one sees some key point concerning
quantization: (1) quantization relates directly to frequency in
Mallat block data and (2) levels of quantization range widely from
high to low frequency block. (Note that the fill is based on a log
formula.) The relation between actual ADV601 bin width factors
and the Mallat block fill pattern in Figure 8 appears in Table II.
9.7
WAVELET
DATA
6.10 1/BW
15.17 DATA
0.5
15.0 BIN
NUMBER
QUANTIZER - ENCODE MODE
TRNC
SIGNED
SIGNED
UNSIGNED
1/BW
QUANTIZER - DECODE MODE
23.8 DE-QUANTIZED
WAVELET DATA
SIGNED
UNSIGNED
8.8 BW
9.7
WAVELET
DATA
15.0 BIN
NUMBER
SIGNED
SAT
BW
Figure 7. Programmable Quantizer Data Flow
41
38
35
32
26
23
29
20
17
14
8
5
11
2
39
36
33
30
24
21
27
18
15
12
6
3
9
0
Y COMPONENT
40
37
34
31
25
22
28
19
16
13
7
4
10
1
Cb COMPONENT
Cr COMPONENT
LOW
HIGH
QUANTIZATION OF MALLAT BLOCKS
Figure 8. Typical Quantization of Mallat Data Blocks (Graphed)
相關PDF資料
PDF描述
ADV7120KP30 CMOS 80 MHz, Triple 8-Bit Video DAC
ADV7120 CMOS 80 MHz, Triple 8-Bit Video DAC
ADV7120KP50 CMOS 80 MHz, Triple 8-Bit Video DAC
ADV7120KP80 CMOS 80 MHz, Triple 8-Bit Video DAC
ADV7120KST30 CMOS 80 MHz, Triple 8-Bit Video DAC
相關代理商/技術參數(shù)
參數(shù)描述
ADV601LCJSTRL 制造商:Analog Devices 功能描述:Ultralow Cost Video Codec 120-Pin LQFP T/R
ADV601LCJSTZ 功能描述:IC CODEC VIDEO DSP/SRL 120LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態(tài)范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
ADV601LCJSTZRL 功能描述:IC CODEC VIDEO DSP/SRL 120LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態(tài)范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
ADV601LC-VIDEOPIPE 制造商:Analog Devices 功能描述:TOOLS:DEVELOPMENT BOARDS H/W 制造商:Analog Devices 功能描述:EVALUATION BOARD ((NS))
ADV601XS 制造商:Analog Devices 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*