Crt display ppt online

Imaging Science Fundamentals Chester F. Carlson Center for Imaging Science Display Systems Viewing Images.

gives white light (R + G + B = WHITE). Imaging Science FundamentalsChester F. Carlson Center for Imaging Science CRT - Color Shadowmask CRT –Three e-beams are shot by 3 electron guns to a phosphor screen. RGB phosphor dots are arranged on /) 525 lines per picture 60 fps (30 pps) Great Britain Standards (PAL) 625 lines per picture 50 fps (25 pps) Imaging Science FundamentalsChester F. Carlson Center for Imaging Science Movies on Television Compare refresh rates: –TVs display at 30 pps. –Movies display at 24/


Cathode Ray Tube (CRT) -Advantages of CRT-Advantages of CRT -Disadvantages of CRT-Disadvantages of CRT - How CRTs work & display?- How CRTs work & display?

Cathode Ray Tube (CRT) -Advantages of CRT-Advantages of CRT -Disadvantages of CRT-Disadvantages of CRT - How CRTs work & display?- How CRTs work & display? Liquid Crystal Display(LCD) -Advantages of LCD-Advantages of LCD -Disadvantages of LCD-Disadvantages of LCD - How LCD work & display?- How LCD work & display? Plasma -Advantages of Plasma-Advantages of Plasma -Disadvantages of Plasma-Disadvantages of Plasma - How Plasma work & display?- How Plasma work & display?  The cathode rayed tube can easily/


Overview of Graphics Systems. Cathode-ray Tube (CRT) - colors are represented using Red, Green, and Blue components - the CRT has a mechanism for.

for the Frame Buffer. The maximum numbers of the points that can be displayed without overlap on a CRT is referred to as the resolution. Typical resolution on high-quality systems is 1280 x 1024. Aspect Ratio Frame aspect ratio = horizontal/vertical size. An aspect ration of ¾ means that a vertical line plotted with three points has the same length as a horizontal/


Introduction. What is a Display ? (1)A complex optical device that renders an image, graphics and text by electrically addressing small switching elements.

emission j: E f is fermi energy F is electric field Emissive – Field Emitter Displays ADVANTAGES: Potentially high luminous A lot of CRT phosphors High speed addressing and response No temperature sensitivity Analog gray scale and full color / lamp CRT Computer Displays Contrast L on : Luminance of the on-pixel L off : Luminance of the off-pixel The derivation of PCR is intuitive and can be performed heuristically. The display row lines must be strobed sequentially when refreshing the display image./


Overview of Graphic Systems

Architecture of Raster Scan Architecture of Raster Scan Architecture of Vector Scan  Random – Scan Systems Random – Scan Systems  Used in architectural and engineering layouts  Problem: no shading  Random-scan displays produce smooth lines  Raster-scan displays produce jagged lines Color CRT Monitors  Use RGB color model  Produce more colors  Each pixel composed of three phosphor color dots (RGB)  3 electronic guns are used Flat-Panel/


1 of 32 Graphic Hardware. 2 of 32 Architecture of Graphics System System Bus CPU Display Processor System Memory Display Processor Memory Frame Buffer.

more complicated –requires manufacturing very precise geometry –uses a pattern of color phosphors on the screen: Delta electron gun arrangementIn-line electron gun arrangement 36 of 32 Display Technologies Cathode Ray Tubes (CRTs) –most common display device today –evacuated glass bottle –extremely high voltage –heating element (filament) –electrons pulled towards anode focusing cylinder –vertical and horizontal deflection plates –beam strikes phosphor coating on front/


Color and Graphics Displays Jian Huang CS594. Physics It’s all electromagnetic (EM) radiation –Different colors correspond to radiation of different wavelengths.

painted 30 times/ sec Screen is traversed 60 times/ sec Even/ Odd lines on alternate scans, ‘interlace’. Color CRT Requires precision geometry Patterned phosphors on CRT face Aligned metal shadow mask Three electron guns Less bright than monochrome CRTs Pro/Con for Raster CRT Display Advantages –Allows solids to be displayed –Leverages low- cost CRT H/W –Whole Screen is constantly updated Disadvantages Requires screen- sized memory array/


University of Texas at Austin CS384G - Computer Graphics Spring 2010 Don Fussell Displays and Framebuffers.

1968. University of Texas at Austin CS384G - Computer Graphics Spring 2010 Don Fussell History Whirlwind Computer - MIT, 1950 CRT display First real-time graphics SAGE air-defense system - middle 1950’s “Whirlwind II” light pens Long-lived (1958 /see two horizontal lines at about ¼ and ¾ of the way up the screen on Trinitron displays. Why? University of Texas at Austin CS384G - Computer Graphics Spring 2010 Don Fussell Liquid Crystal Displays CRTs are rapidly being displaced by liquid crystal displays (LCD’s/


Digital Image Lecture 3. Graphical Raster Devices Raster graphic architecture CPU System Memory Frame Buffer Video Control Display System Bus Peripheral.

For a human to see a steady image on most CRT displays, the same path must be retraced, or refreshed, by the beam at least 60 times per second.  Current raster-scan displays perform refreshing at the rate of 60 to 80 frames/representation of a 2-dimensional or 3-dimensional scene. A vector graphics file contains graphics primitives, for example, rectangles, circles, lines. There are many languages for describing vector graphics. such as PostScript, VRML (stands for Virtual Reality Markup Language ), and SVG/


Lecture 1 Computer Graphics Hardware Basic graphics hardware –Display devices –Video controller –Memory –CPU –System bus Graphics Hardware # 1 CG show.

electronic beam. CP411 Computer Graphics Graphics Hardware # 3 Color CRTs Color CRTs are much more complicated –Requires manufacturing very precise geometry –Uses a pattern of color phosphors on the screen: Delta electron gun arrangement In-line electron gun arrangement CP411 Computer Graphics Graphics Hardware # 4 Vector Displays Vector displays –Draw object by electron beam –Early computer displays: basically an oscilloscope –Control X,Y with vertical/horizontal/


CATHODE RAY TUBE.

of the tube, although electrostatic deflection is commonly used in oscilloscopes, a type of diagnostic instrument. How CRTs work & display? A CRT monitor contains millions of tiny red, green, and blue phosphor dots that glow when struck by an electron/spot size as well. Color CRTs Color tubes use three different phosphors which emit red, green, and blue light respectively. Color CRTs have three electron guns, one for each primary color, arranged either in a straight line or in a triangular configuration /


Advanced Radio and Radar

it cannot determine the object’s bearing, or its height. CRT Radar Display To get the bearing and height we must make some alterations to the CRT display screen, Starting with the bearing – CRT Radar Display To find the bearing of a target (direction) of a / initials CRT stand for? Cathode Ray Tube Cathode Radiation Tube Capacitor Resistance Translator Cathode Radio Tube Check of Understanding What is the purpose of the reflector and directors of an aerial? To match the aerial to the transmission line To /


實驗2: 電子受靜電力及磁力作用的偏折 (課本實驗15/16)

Tube (CRT) - is one of the main elements of an oscilloscope. A CRT is commonly used to obtain a visual display of electronic information in oscilloscopes, radar systems, televisions, etc. The CRT is a/ (+/0) 3. 時基(T)掃描 (X無輸入) 觸發水平/斜率(trig level/slope) (22): 穩定波形 (+/0) 觸發耦合(trig coupling) (23): ac 觸發源(trig source) (24) ch 1: Y 內源 (觸發鋸齒波掃描) ch 2: X line (電源觸發) ext (外源觸發) (接21) 觸發模式(trig mode) (25) auto (自動觸發) norm (正常) X – Y 可變/校正控制(variable/cal) (26) 轉到校正(cal)位置, 靈敏度範圍: 0.2 ms/格 – 0.5 s/格 掃描時間(sweep time) (/


CRT MONITOR cathode-ray tube

lower price rate than the LCD display or Plasma display. The quality of the image displayed on a Cathode Ray Tube is superior to the LCD and Plasma monitors. The contrast features of the cathode ray tube monitor are considered highly excellent. How CRTs work & display? A CRT monitor contains millions of tiny red,/. Electric leads around the edge of the LCD create an electric field that twists the crystal molecule, which lines the light up with the second polarizing filter and allows it to pass through it.


Video and Audio Systems

By mixing intensities of three colors a complete spectrum of colors can be produced CH 8 Types of Video Displays CH 8 Types of Video Displays CRT build up magnetic residue that distort electron beams and thus the picture will be distorted. Degaussing removes magnetic / 60 time a second Interlaced scan do every other line (i.e. odds first the goes back an does evens) 1080i Progressive scan does line by line 1080p CH 8 Types of Video Displays Liquid Crystal Display (LCD) are based off of polarized light and /


Video Chapter 16. Cathode Ray Tube (CRT) CRT’s are like a vacuum tube. The more slender end contains three electron guns, the wider end is the display.

:3 ratio. One triad is a red, blue and green phosphors in a triangle shape. CRT, cont… Interlacing Keep cost down by refreshing every other line of pixels on the display Bandwidth Is the amount of times per minute the electron gun can be turned on and off/to the limits of the screen because of poor convergence at the outer display edges. Never touch the high-voltage anode in a monitor, it can cause serious shock Read 1023-1027 on CRT problems and discharge Beyond A+ Video Every standard CMOS setup shows an /


Displaying in Multimedia In this unit you will: Identify the hardware used to display multimedia. Investigate the software used to create multimedia.

at 60-72 time/sec. This is known as the refresh rate. The Vector display system A special type of CRT- only displays vector graphics. Directs the electron stream to draw only lines. Shading drawn as a series of lines. Have faster refresh rate than CRT using raster scan. Liquid crystal displays LCD’s uses a piece of liquid crystal material placed between a pair of transparent/


On Screen Display ( OSD ) ( Han OSD ) 2010.05. ▪ Name Hangisool Co., Ltd Adjunct of Hangisool Technical LAB. ▪ CEO Lim, Eung Kyu ▪ Date of Establishment.

for Elevator parts ▪ Website www.hangisool.co.kr ▪ Product Elevator Remote Monitoring System Elevator CRT Monitoring System Elevator CCTV On Screen Display(OSD) Elevator Display Indicator (VFD,VMD,LCD…) TANK LEVEL GUAGE SYSTEM SMD Mounter Network Feeder System LONWORK / from camera 3-1. OSD-Rack Component Existing CCTV line Connection E/L Control Information Control Tower Before OSD Installation After OSD Installation PC Control [ OSD Installation and Display ] 4. OSD Operational Concept (E/L Control Board/


The International Communications Industries Association, Inc. ® Trends In Display Technologies The Wild Ride Continues… Peter H. Putman, CTS President,

Deinterlacing SD Video With 480p CRT displays, its not as much of an issue (resolution limits of spot size) With 720p/768p FP displays, scan line and motion artifacts are more visible With 1080p FP displays, problem is severe as all/ The International Communications Industries Association, Inc. ® Emissive Contenders Surface-conducting Electron-emitting Displays (SEDs) have promise, but… Super-thin technology with CRT-like image quality High contrast, brightness Bright colors and wide viewing angles Can Canon/


Principle of LCD Display

liquid crystal molecules along grooves When coming into contact with grooved surface in a fixed direction, liquid crystal molecules line up parallel along the grooves. 3. Operating Principle Molecules movement Offline (no voltage is applied) Along the upper/) Maximum luminosity : 50% of CRT as 50% of light is blocked by the upper polarizer. 3. Operating Principle Advantage of LCD over CRT Smaller size—AMLCDs occupy approximately 60 percent less space than CRT displays—an important feature when office space /


Graphics Hardware Display (CRT, LCD,…) Graphics accelerator Scan controller Video Memory (frame buffer) Display/Graphics Processor CPU/Memory/Disk …

pixels - The electron gun draws straight lines from location to location on the screen (vector graphics) a.k.a. calligraphic display, Random scan device, vector drawing display Use either display list or storage tube technology Vector graphics Display list Move (100,200) Draw(200/and a picture) consists of discrete pixels Digital Display How CRT draws a picture We have only one electron gun but many pixels in a picture need to be lit simultaneously… Refresh of CRT Refresh – the electron gun needs to come /


Video Hardware. Objectives In this chapter, you will: -Learn how CRT displays operate -Learn how LCD displays operate -Learn how flat-panel displays operate.

with solids, and for that, we need to use a CMY abbreviation. CMY is also used in LCD panels. Liquid Crystal Displays Whereas a CRT produces a beam of light, liquid crystal technology relies on another source of light to pass through crystals. If light can pass /’s monitors is typically 1280 X 1024 or 1600 X 1200. A standard VGA monitor has 640 pixels in a horizontal axis (line) and 480 pixels vertically. 640 X 480 Different graphics modes can also have varying numbers of colors, a third number refers to/


ITEC 1000 Introduction to Information Technologies Types of Displays Two main types –CRT (cathode ray tubes) –LCD (liquid crystal display) OLED Related.

/blocking different frequencies of light ITEC 1000 Introduction to Information Technologies CRT Display Rev: Fig 9.21 pg 267 ff ITEC 1000 Introduction to Information Technologies Operation of a CRT Display A CRT display contains a vacuum tube At one end are three electron guns,/ Also called bubble jet ITEC 1000 Introduction to Information Technologies How it works Characters and graphics are painted‘ line by line to from a pattern of dots as a print head scans horizontally across the paper. An ink-filled /


Institute for Visualization and Perception Research 1 © Copyright 2000-2010 Haim Levkowitz Graphics Systems Overview Video display devices … Input devices.

… Random-scan/stroke Line drawing Display list No shaded image Higher resolution Smooth lines (beam follows line) Institute for Visualization and Perception Research 22 © Copyright 2000-2010 Haim Levkowitz Vector display example … Institute for Visualization and Perception Research 23 © Copyright 2000-2010 Haim Levkowitz Graphics displays, monitors, workstations … Direct view storage tubes … Color CRT monitors … Flat-panel displays … Three-dimensional viewing devices Stereoscopic and virtual-reality/


Computer Organisation 1 Sébastien Piccand Display devices.

of colors Wikipedia: List_of_color_palettes – Brightness Maximum intensity (brightest point) – Contrast ratio Ratio brightest/darkest Display devices Main characteristics Monitors Touchscreens Tablet PC Interactive whiteboards Projectors E-Readers Monitors: CRT CRT: Cathode Ray Tube Monitors: CRT Raster scanning – Interlacing: even lines/odd lines (TV) – Progressive scanning (Computers) Monitors: CRT High image quality (contrast, brightness, number of colors, viewing angle) Fast response time Big device/


Display Devices Display Devices  Display Hardware  Components of CRT Components of CRT  Refresh CRT Refresh CRT  Electron Gun  Focussing system.

at the center of the spot, and decrease with Gaussian distribution out to the edges of the spot. Properties of CRT  Resolution: The maximum number of points that can be displayed without overlap on a CRT. Overlap Properties of CRT  This numbers gives the ratio of vertical points to horizontal points necessary to produce equal length lines in both directions on the screen. Properties of/


Lecture # 4 Output Devices. Output Devices Devices that convert machine language into human understandable form. Output can be in display form, on paper.

no greater than.28 millimeter. Viewing Angle The angle from which the display’s image can be viewed clearly. CRT Monitors LCD Viewing Angle of Active Matrix & Passive Matrix LCD ???????? Interlaced & Non-Interlaced Monitors Interlaced Monitors:  It scans odd lines in the first pass and in the second pass scans the even lines.  It causes flickering of screen.  Obsolete. Non-Interlaced Monitors:  It scans/


Computer Graphics Lecture 3. Graphics Output Devices A- VIDEO DISPLAY DEVICES 1.Refresh cathode-ray tube (CRT) 2.Raster-Scan Displays 3.Random-Scan Displays.

:- plotters(ink-jet plotters, pen plotters) A- Video Display Devices 1-Refresh Cathode-Ray Tubes (CRT) Component : electronic gun - focus control deflection coil - electronic beam A- Video Display Devices Illustrates the basic operation of a CRT(CRT operation ): 1.A beam of electronic (cathode rays), /from top to down. As electronic beam moves a cross a scan line and beam turn on and off. Each row is referred to as scan line. A- Video Display Devices Bitmap: A frame buffer with one bit per pixel is commonly/


INTENSITY MODULATED RADIOTHERAPY(IMRT) AND 3 D CONFORMAL RADIOTHERAPY(3D CRT) DR GURU PRASAD MOHANTY CONSULTANT RADIATION ONCOLOGIST DEPARTMENT OF RADIATION.

on different image sets for same patient IMAGE SEGMENTATION OR CONTOURING Most labour-intensive component of 3-D CRT Necessary for the qualitative and quantitative evaluation of treatment plan. Reconstructed sagittal & coronal images provide additional /used in the evaluation of the planned dose distribution: – 2-D display Isodose lines Color wash DVHs (Dose volume histograms ) – Dose distribution statistics 2D EVALUATION Isodose lines superimposed on CT images Color wash - Spectrum of colors superimposed on/


The CRTC Interface Essential aspects of display page and cursor control for standard 80-column by 25-row text.

‘os630’ program will need to reposition the CRT cursor This will involve directly programming certain registers in the CRT Controller (i.e., hardware) For cooperation with messages that our ‘trackldr’ boot-loader displays (it uses int-0x10), we also need to/// blank character/color mov cx, #80// characters on bottom line rep stosw Linux uses hardware scrolling The value of the CRT START_ADDRESS is reprogrammed, to change the region of visible vram by one line (i.e., add #80) So instead of subdividing vram /


1. Introduction 2. Methods for I/O Operations 3. Buses 4. Liquid Crystal Displays 5. Other Types of Displays 6. Graphics Adapters 7. Optical Discs 12/11/20141Input/Output.

several variants of video ports VGA (Video Graphics Array) Analog interface Designed for CRT displays, but also used by some liquid crystal displays Electrical noise may occur DB-15 connector 12/11/20149Input/Output Systems and Peripheral Devices/ Boolean operator The result is transferred to the destination area Blitter: dedicated circuit for the BitBlt operation Tracing lines, drawing rectangles, circles Filling surfaces or polygons Adding color 12/11/201435Input/Output Systems and Peripheral Devices (06/


Applicability of location compatibility to the arrangement of display and control in human – vehicle systems: Comparison between young and older adults.

participant includes similar information of the front CRT speedometer and the tachometer are not depicted on there Method The front CRT Method Display of task Display of state State icons AM/FMCD/MD/ Task Primary task (tracking task) –1-D with the horizontal position of a target line changing pseudo-randomly –follow the movement of a target line with the shorter vertical line controlled by a steering wheel –position of the vertical target line/


SEMINAR REPORT ON. DEFINATION OF MONITOR A computer display, monitor or screen is a computer peripheral device capable of showing still or moving images.

of monitors ** PLASMA ** LCD (LIQUID CRYSTAL DISPLAY) ** CRT (CATHODE RAY TUBE) ** TFT (THIN FILM TRANSISTER) ** FLAT PANNEL DISPLAY ** TOUCH SCREEN MONITORS ** WIRELESS MONITORS HOW CRT WORKS ? CRT DISPLAY HARDWARE CRT DISPLAY THEORY A CRT monitor contains millions of tiny red, green, /ACTUAL HARDWARE HOW LCD EMIT LIGHT ? A typical twisted nematic (TN) liquid crystal display consists of two polarising filters with their lines arranged perpendicular (at 90 degrees) to each other, which, as described above, /


Choosing a Display A brief talk by William Matheson.

000 feet (right). CRTs: Advantages Very wide viewing angle (close to 180°): CRTs: Advantages Every resolution is optimally displayed. CRTs: Advantages Ideal for displaying low-resolution content. Lowest-possible input lag, fast response time. CRTs: Disadvantages Heavy CRTs: Disadvantages Expensive Sony KV/to achieve than dynamic Measurement differs among manufacturers, so only use it to compare among a single model line LED-backlit LCDs Beware: LED-backlit LCDs are often marketed as “LED TVs”: An actual LED /


R & T S 1 TV Systems Content: d CRT scanning d composite video signal d colour systems d satellite orbit d earth station d satellite TV.

& T S 2 CRT principle Electrostatic deflection R & T S 3 CRT principle d Electromagnetic deflection: use of magnetic energy to deflect electron beam both vertically & horizontally d practically all TV display devices use electromagnetic deflection R & T S 4 CRT principle Deflection yoke: two/pulses: [ horizontal sync pulses [ vertical sync pulses d Sync pulses trigger the flyback of electron beam at the end of lines or end of a field R & T S 14 Synchronization d Vertical sync d Horizontal sync R & T S 15 BW/


ECE 448 Lecture 7 VGA Display Part 1

and ASIC Design with VHDL VGA – Video Graphics Array Video display standard introduced in the late 1980’s Widely supported by PC graphics hardware and monitors Used initially with the CRT (cathode ray tube) monitors Later adopted for LCD monitors as / FPGA and ASIC Design with VHDL Vertical Synchronization ECE 448 – FPGA and ASIC Design with VHDL Four regions of vsync Display: 0..479, width = 480 lines Bottom border (front porch): 480..489, width = 10 Retrace (vertical flyback): 490..491, width=2 Top border/


Chapter-2 Overview of Graphics Systems Topics: Topics: Video-display system Video-display system Rater Scan systems Rater Scan systems Random scan systems.

the electron beam in a CRT Video-Display Devices Illumination of phosphor spots on back of CRT Video-Display Devices Fig.2-7 A raster –scan system displays an object as a set of discrete points across each scan line. Video-Display Devices Video-Display Devices Note at the Interlace mechanism of display: display the even lines in 1/60 of a second and then display the odd lines in next 1/60/


Displays. 2 Functions of Dynamic Visual Displays Continuous System Control steering (vehicle control) tracking state variable  target value System Status.

aircraft) Temperature (chemical reactor) Types Fixed scale moving pointer Fixed pointer moving scale Technologies mechanical, electromechanical electronic (CRT, LCD, …) 23 Fixed Scale Moving Pointer (1) 0 20 10 30 40 50 60 70 80/“quantitative info principles” 46 Current Setting Info (Qualitative) Examples Function selector (stereo system) Line selector (multi-line phone) Types Two-value displays Alphanumeric displays Technologies Mechanical (e.g. flag, 2-position button) Electronic (light, LED, …) Principles/


George Mason University ECE 448 – FPGA and ASIC Design with VHDL VGA Display Part 1 Synchronization & Pixel Generation ECE 448 Lecture 8.

FPGA and ASIC Design with VHDL Operation of a CRT monitor 7 CRT Monitor – Conceptual Diagram ECE 448 – FPGA and ASIC Design with VHDL 8 CRT Monitor – Scanning Pattern ECE 448 – FPGA and ASIC Design with VHDL 9 CRT Monitor – Horizontal Scan ECE 448 – FPGA and / 448 – FPGA and ASIC Design with VHDL 17 Four regions of vsync ECE 448 – FPGA and ASIC Design with VHDL Display: 0..479, width = 480 lines Bottom border (front porch): 480..489, width = 10 Retrace (vertical flyback): 490..491, width=2 Top border (back/


Medical Oscilloscopes. Cathode ray oscilloscope (CRO) basics: –Many measurement are made easier by the CRO because it will display not only amplitude,

and wave shape relationships. –Many medical instruments use the CRO to display physiological waveforms as an alternative to paper consuming strip-chart recorders. –The heart of any oscilloscope is the cathode ray tube (CRT). An electron gun at the rear of the tube emits a beam/ memory locations also drive the horizontal D/A converter. The binary counter is driven by a clock signal, so the output lines increment by one bit for each clock pulse, The result of this action at the output of the D/A converter is/


High Brightness Multimedia TFT-LCD Display “…simply brightest.” www.solarism.com.

with this monitor and would recommend it to anyone that is tired of having a CRT and hasn’t bought a LCD yet” “…the LM1503 kept the display crisp and well lit, in fact I will go as far as to say that/ “TRUE” Multimedia functions Noticeable differences in quality Noticeable differences in quality AAA level panel (Top of the line) AAA level panel (Top of the line) Why Solarism? Benefits & Advantages Business Application Business Application Home office Home office Consumers Consumers Art/Advertising designer/


George Mason University ECE 448 – FPGA and ASIC Design with VHDL VGA Display Part 1 VGA Synchronization ECE 448 Lecture 9.

FPGA and ASIC Design with VHDL Operation of a CRT monitor 7 CRT Monitor – Conceptual Diagram ECE 448 – FPGA and ASIC Design with VHDL 8 CRT Monitor – Scanning Pattern ECE 448 – FPGA and ASIC Design with VHDL 9 CRT Monitor – Horizontal Scan ECE 448 – FPGA and / 448 – FPGA and ASIC Design with VHDL 17 Four regions of vsync ECE 448 – FPGA and ASIC Design with VHDL Display: 0..479, width = 480 lines Bottom border (front porch): 480..489, width = 10 Retrace (vertical flyback): 490..491, width=2 Top border (back/


Output Device.  Output devices are devices used to display or retrieve information from the computer.

the higher the resolution the sharper the image.  Types of Monitor are  Cathode ray Tube(CRT)  Flat Panel Display Cathode-Ray Tube (CRT)  The CRT display is made up of small picture elements called pixels. The smaller the pixels, the better the image/of character can be easily changed  Disadvantages  Slower than DMP  Noisy  More expensive than DMP Line printer  Line printers are the printers which print one line at a time.  These are of further two types  Drum Printer  Chain Printer Drum Printer /


DECREASED FLICKER SENSITIVITY WITH A SCANNED LASER DISPLAY. J.P. Kelly 1, H.L. Pryor, E.S. Viirre, T. Furness III. 1 Childrens Hospital & Medical Center;

g-correction for video output Separate linear g-correction for laser output Argon ion laser generates 514 nm and 488 nm lines. Beams are separated by dichroic mirrors and filters. AO modulators vary intensity for green and blue lasers. Red laser /luminance or mean chromaticity. Subjects adjust contrast to threshold detection. Compare thresholds between a CRT and VRD at same resolution and temporal frame rate as a VGA display. AOM modulates green laser, red laser diode was directly modulated, and blue laser /


The CRT Controller How to modify CRTC registers to achieve a non-standard horizontal and vertical screen resolution.

state’ (such as screen blanked, or a retrace operation) The ‘border color’ After the ‘display-enabled’ state ends, and before the ‘display-blanked’ state begins, a traditional CRT displays a ‘overscan color’ The overscan-color is programmable (and normally is set to ‘black’ / demo does these steps: 1)Lower Horizontal Display End by 8 chars 2)Lower Vertical Disply End by 48 lines 3)Reduce Horiz Retrace Start by 5 chars 4)Reduce Vertl Retrace Start by 15 lines 5)Adjust Offset for narrower screen pitch Register/


Win OS & Hardware. Monitors Most desktop displays use a cathode ray tube (CRT), while portable computing devices use liquid crystal display (LCD), light-

Win OS & Hardware Monitors Most desktop displays use a cathode ray tube (CRT), while portable computing devices use liquid crystal display (LCD), light- emitting diode (LED), or gas plasma Monitors Display technology - Choices are mainly between CRT and LCD technologies. Cable technology - VGA/one half of the frame every sixtieth of a second Monitors HDTV Progressive scanning shows the whole picture, every line in one showing, every sixtieth of a second. This provides for a much smoother picture, but uses /


 A monitor or display is an electronic visual display for computers.  The monitor consists of : o the display device o circuitry o enclosure The display.

burn-in Dead pixels are possible during manufacturing o Phosphor burn-in In older screens the phosphor layer of a CRT screen where it has displayed a static bright image for many years. This results in a faint permanent image 3:4 on the screen, /registration of the color channels, that is, the centers of the red, green, and blue dots do not line up perfectly. o Incomplete spectrum RGB [registered] displays produce most of the visible color spectrum, but not all. This can be a problem. o Multiple monitors /


Color Monitors, Display Processors Resolution. ► A display monitor capable of displaying many colors. Display monitor Display monitor ► In contrast, a.

► In practice, however, the real number of colors that any monitor can display is controlled by the video adapter. ► Color monitors based on CRT technology employ three different techniques to merge phosphor triplets into pixels:  Dot-trio /This is typically stated as “xxx lines horizontal resolution, per picture height.” ► Example: Analog NTSC and PAL TVs can typically display 480 (for NTSC) lines horizontal resolution, per picture height which is equivalent to 640 total lines from left-edge to right-edge/


1 Light and Color. 2/118 Topics The Human Visual System Displaying Intensity and Luminance Display Using Fixed Intensities Understanding Color Display.

Original 1080p 31/118 YouTube 360p 32/118 Gamma Corrected 360p 33/118 Original 1080p 34/118 Gamma and non-CRT Displays Gamma is meant to model CRTs only Other displays (e.g. LCD) may have very different response curves between intensity and value sent  They do not/outside curve Image taken from http://fourier.eng.hmc.edu/e180/handouts /color1/node27.html 99/118 Saturation As you move on line from white to edge, you increase the saturation of that color. Royal blue, red: high saturation Carolina blue, pink: /


The CRTC Interface Essential aspects of display page and cursor control for standard 80-column by 25-row text.

How large is the cursor? Where does it start and end within the 8x16 character-cell? –Which region of display-memory is visible? Hardware registers The CRT Controller is a peripheral chip It implements 25 standard CRTC registers Access to these registers is accomplished via a multiplexing /register Scrolling the screen Here’s a code-fragment that will scroll the contents of vram page 0 up by one line: mov$0xB800, %ax// address vram page 0 mov%ax, %ds// with DS register mov%ax, %es// also ES register mov$/


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