參數(shù)資料
型號： MC44011FN
廠商： MOTOROLA INC
元件分類： 消費(fèi)家電
英文描述： BUS CONTROLLED MULTISTANDARD VIDEO PROCESSOR
中文描述： SPECIALTY CONSUMER CIRCUIT, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 49/52頁
文件大小： 835K
代理商： MC44011FN
MC44011
GLOSSARY
49
MOTOROLA ANALOG IC DEVICE DATA
Aspect Ratio
– The ratio of the width of a TV screen to the
height. In standard TVs, it is 4:3. In HDVT it will likely be 16:9.
Back Porch
– The blanking time after the sync signal during
which the color burst is inserted.
Blank, Pedestal
– The signal level which is either at black, or
slightly more negative than black (“blacker–than–black”), and
is used to turn off the screen dot during retrace. Also referred
to as the pedestal
Brightness
– A measure of the dc levels of the luma
component. Changing brightness will change the minimum
and maximum luma levels together.
Burst
– The 8 to 10 cycle sine wave which is inserted in the
back porch. It’s frequency is the color subcarrier (3.58 MHz
or 4.43 MHz), and is used as a phase reference for the color
decoder.
Burst Gate
– A signal identifying the time during which the
burst signal occurs.
C, Chrominance
– The color component of the video signal.
The color is determined by the phase of the chrominance
component relative to the burst signal.
Clamping
– A process which establishes a fixed dc voltage
level, usually during the back porch time.
Color Difference Signals
– B–Y, R–Y, also designated as
U and V.
Color Decoder
– A circuit which separates composite video
into Red, Blue, and Green, luminance, and sync signals.
Color Encoder
– A circuit which combines Red, Blue, and
Green, luminance, and sync signals into composite video.
Comb Filter
– A multi–bandpass filter which separates the
luma and chrominance components from the video signal,
without sacrificing bandwidth.
Component Video, YUV
– A format whereby the video
information is kept as separate luma, R–Y, and B–Y signals
(YUV) U is the same as B–Y, and V is the same as R–Y.
Composite Sync
– A sync signal which combines horizontal
and vertical sync information. The waveform is made up of
regularly spaced negative going pulses for the horizontal
sync, and then half–line pulses and polarity reversal to
indicate the vertical sync and retrace time.
Composite Video
– The video signal which consists of sync,
back porch, color burst, video information (luma and
chroma), and front porch. This is the signal normally
broadcast by TV stations.
Contrast
– A measure of the difference between minimum
and maximum luma amplitudes. Increasing contrast
produces a “blacker” black and a “whiter” white.
dB
– A power or voltage measurement unit, referred to
another power or voltage. It is generally computed as:
10 x log (P1/P2) for power measurements, and
20 x log (V1/V2) for voltage measurements.
Field
– One of the two or more equal parts into which a frame
is divided in an interlaced system.
Frame
– The information which makes up one complete
picture. It consists of 525 lines in NTSC systems, and
625 lines in PAL systems. An interlaced system is typically
composed of two fields.
Front Porch
– The blanking time immediately before the
sync signal.
Horizontal Sync
– The negative going sync pulses at the
beginning of each line. The pulses indicate to the circuit to
begin sweeping the dot across the screen.
Hue
– A measure of the correctness of the colors on a
screen.
Interlaced System
– A method of generating a picture on the
screen whereby the even number lines are processed, and
then the odd number lines are processed, thereby
completing a full picture.
IRE
– Abbreviation for International Radio Engineers it is the
amplitude unit used to define video levels. In standard NTSC
signals, blank–to–white is 100 IRE units, and blank–to–sync
tip is 40 IRE units. In a 1.0 Vpp signal, one IRE unit is
7.14 mV.
Luma, Y
– The brightness component of the video signal.
Usually abbreviated “Y”, it defines the shade of gray in a
black–and–white TV set. In color systems, it is composed of
0.30 red, 0.59 green and 0.11 blue.
NTSC
– National Television System Committee. This
committee set the color encoding standards and format for
television broadcast in the United States.
PAL
– Phase Alternating Line A color encoding system in
which the burst is alternated 90
°
each line to help
compensate for color errors which may occur during
transmission. This system is popular mainly in Europe.
Pixel
– The smallest picture element, or dot, on a screen. It is
determined by the design of the CRT, as well as the system
bandwidth.
R–Y, B–Y
– Referred to as color difference signals These
are two of the three signals of component video. When
combined with Y, the full color and luminance information is
available.
Retrace
– The rapid movement of the blanked dot from the
screen’s right edge to the left edge so it can start scanning a
new line. It is also the rapid movement from the lower right
corner to the upper left corner during vertical blanking.
RGB
– The three main colors (red, blue, green)used in the
acquiring, and subsequent display of a video signal.
S–VHS
– A format whereby the video information is kept as
separate luma and chroma signals (Y and C).
Sandcastle
– A signal which indicates the horizontal
blanking time. It encompasses the front porch, sync, and
back porch. Two amplitudes distinguish the front porch +
sync time from the back porch.
Saturation
– A measure of the intensity of the color on a
screen. Also related to its purity.
Sync Separator
– A circuit which will detect, and output, the
sync signal from a composite video waveform.
Vertical Sync
– The synchronizing signal which indicates to
the circuitry to drive the dot to the upper left corner of the
screen, thereby starting a new field. This signal is derived
from the composite sync.
相關(guān)PDF資料
PDF描述
MC44871DTB PLL TUNING CIRCUIT WITH HIGH SPEED I2C BUS AND 30 V TUNING SUPPLY
MC68705P3CS 8-Bit EPROM Microcomputer Unit
MC68705P3 8-Bit EPROM Microcomputer Unit
MC68705P3S 8-Bit EPROM Microcomputer Unit
MC68705R3 8-Bit EPROM Microcontroller Unit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC4403 制造商:SHENZHENFREESCALE 制造商全稱:ShenZhen FreesCale Electronics. Co., Ltd 功能描述:P-Channel 20-V (D-S) MOSFET High performance trench technology
MC44030FTB 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44030P 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44035FTB 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
MC44035P 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MULTISTANDARD VIDEO SIGNAL PROCESSOR WITH INTEGRATED CHROMA DELAY LINE
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

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(jìn)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(jìn)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

*
*
*