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Cathode-Ray Tube Displays for Medical Imaging
DIGITAL IMAGING BASICS Cathode-Ray Tube Displays for Medical Imaging Peter A. Keller This paper will discuss the principles of cathode-ray crease the velocity of the electron beam for tube displays in medical imaging and the parameters increased light output from the screen; essential to the selection of displays for specific 4. a focusing section to bring the electron requirements. A discussion of cathode-ray tube fun- beam to a sharp focus at the screen; damentals and medical requirements is included. 9 1990bu W.B. Saunders Company. 5. a deflection system to position the electron beam to a desired location on the screen or KEY WORDS: displays, cathode ray tube, medical scan the beam in a repetitive pattern; and irnaging, high resolution. 6. a phosphor screen to convert the invisible electron beam to visible light. he cathode-ray tube (CRT) is the heart of The assembly of electrodes or elements mounted T almost every medical display and its single within the neck of the CRT is commonly known most costly component. Brightness, resolution, as the "electron gun" (Fig 2). This is a good color, contrast, life, cost, and viewer comfort are analogy, because it is the function of the electron gun to "shoot" a beam of electrons toward the all strongly influenced by the selection of a screen or target. The velocity of the electron particular CRT by the display designer. These beam is a function of the overall accelerating factors are especially important for displays used voltage applied to the tube. For a CRT operating for medical diagnosis in which patient safety and at an accelerating voltage of 20,000 V, the comfort hinge on the ability of the display to electron velocity at the screen is about present easily readable, high-resolution images 250,000,000 mph, or about 37% of the velocity of accurately and rapidly. -
Liquid Crystal Display Module
LIQUID CRYSTAL DISPLAY MODULE Product Specification DENSITRON STANDARD LCD MODULE PRODUCT LM/TS 3234 – LM/TS 4234 – LM/TS 6234 NUMBER DEFINITION Date Display 240*128 dots 19/04/04 INTERNAL APPROVALS Quality Mgr Product Mgr Project Leader Mech. Eng Electr. Eng Date: Date: Date: Date: Date: DENSITRON TECHNOLOGIES plc. – PROPRIETARY DATA – ALL RIGHTS RESERVED TABLE OF CONTENTS 1 PART NUMBER DESCRIPTION FOR AVAILABLE OPTIONS....................................................................................4 2 MAIN FEATURES..................................................................................................................................................................5 3 MECHANICAL SPECIFICATION ......................................................................................................................................6 3.1 MECHANICAL CHARACTERISTICS..........................................................................................................................6 3.2 MECHANICAL DRAWING...........................................................................................................................................7 4 ELECTRICAL SPECIFICATION........................................................................................................................................8 4.1 ABSOLUTE MAXIMUM RATINGS.............................................................................................................................8 4.2 ELECTRICAL CHARACTERISTICS............................................................................................................................8 -
Popular Electronics Build a Subwoofer Let Your Home Theater Roar and Rumble
PRIMESTAR. THE DBS ALTERNATIVE Popular Electronics Build A Subwoofer Let your home theater roar and rumble The Truth About Speaker Cables What's really inside those expensive audiophile cables? Designing Speaker Crossovers Create your own great -sounding speakers d SBk'BDCCH.xux.xx 5-DIGIT 60506 Random -at Image k6O506C+HM997GA006M FEB96 P73 Make 3 -D images that pop o ROBERT RAHM RESP of your computer's screen 116 997 GRAND AUE AURORA IL 60506 -2513 $3.50: U.S. $3.95 CAN. FrJEL1t;Aricarí www.americanradiohistory.comAmericanRadioHistory.Com MIXED-MODE POWER Design & Verify Faster with Electronics Workbench® More Power s Simulate bigger and more Electronic complex circuits. Faster. On average, Electronics Analog, Digital & e nch Workbench Version 4 is o rb more than 5 times faster l compbner Mixed Circuits in a lab than Version 3. Electronics Workbench" The electronics Version 4 is a fully integrated schematic capture, simulator and graphical waveform More Parts generator. It is simple to Multiple parts bins mix analog and digital parts contain over twice the in any combination. components of Version 3. Design and Verify Circuits... Fast! More Models Electronics Workbench s Over 350 real world analog simple, direct interface and digital models are helps you build circuits included free with in a fraction of the time. Electronics Workbench. Try `what if' scenarios and And, if you need more, an fine tune your designs additional 2,0(X) models painlessly. are available. Electronics Workbench delivers the power you need to design and verify analog, digital and true mixed mode circuits. Over 20,000 customers have already put Electronics Workbench to the test. -
Lcd Product Specification
LCD PRODUCT SPECIFICATION PART NUMBER: USMPG-TQ240128D-SZWBI 240x128 Graphic LCD; STN Blue Display DESCRIPTION: Mode; Transmissive, Negative, with LED Sidelight and 6 O'Clock Viewing Direction. ISSUE DATE APPROVED BY CHECKED BY PREPARED BY (Customer Use Only) PROPRIETARY THIS SPECIFICATION IS THE PROPERTY OF US MICRO PRODUCTS AND SHALL NOT BE REPRODUCED OR NOTE: COPIED WITHOUT THE WRITTEN PERMISSION OF US MICRO PRODUCTS AND MUST BE RETURNED TO US MICRO PRODUCTS UPON ITS REQUEST. www.usmicroproducts.com CONFIDENTIAL (800) 741-7755 USMPG-TQ240128D-SZWBI 1.Features a) +5V power supply b) Built-in controller (RA6963L2NA) c) 240x128 dots graphic LCD module d) STN Blue mode, transmissive; neagative display e) Viewing direction: 6:00 O’clock f) 1/128 duty cycle g) (white)LED backlight 2.Outline dimension CONFIDENTIAL 3.Absolute maximum ratings Item Symbol Standard Unit Power voltage VDD-VSS 0 - 7.0 V Input voltage VIN VSS - VDD Operating temperature range VOP -20 - +70 ℃ Storage temperature range VST -30 - +80 www.usmicroproducts.com 1 (800) 741-7755 USMPG-TQ240128D-SZWBI 4.Block diagram /WR COM /RD LCD PANEL /CE 240X128 Dots C/D COM /RST DB0~DB7 RA6963 FS 13 COL COL COL VDD 8 RAM V0 VSS 2 FG VEE DC/DC LEDA LED SIDE(WHITE) 5.Interface pin description Pin External CONFIDENTIAL Symbol Function No. connection 1 VSS Signal ground for LCM (GND) 2 VDD Power supply Power supply for logic (+5V) for LCM 3 V0 Operating voltage for LCD 4 C/D MPU H: Instruction L: Data 5 /RD MPU Read enable signal 6 /WR MPU Write enable signal 7~14 DB0~DB7 MPU Data bus line 15 /CE MPU Chip enable signal 16 /RST MPU Reset signal 17 VEE Negative voltage output 18 MD2 Selection of number of columns:H-32,L-40 19 FS MPU Font selection: H=6x8 dot matrix, L=8x8 dot matrix 20 LEDA BKL power supply Power supply for BKL(+5.0V) Contrast adjust DC/DC build in VDD~V0: LCD Driving voltage VR: 10k~20k www.usmicroproducts.com 2 (800) 741-7755 USMPG-TQ240128D-SZWBI 6.Optical characteristics θ φ 1 φ1 2 θ2 12:00 9:00 3:00 6:00 STN type display module (Ta=25℃, VDD=5.0V) Item Symbol Condition Min. -
4957 User Manual
4957D/E/F Microwave Analyzer User Manual China Electronics Technology Instruments Co., Ltd. Contents Foreword Thanks very much for purchasing and using the 4957D/E/F microwave analyzer produced by China Electronics Technology Instruments Co., Ltd. The Company follows the ISO9000 standard always during production and adheres to the customer-oriented and quality-first principles. Please read carefully the manual, so as to facilitate the operation. We will spare no efforts to meet your requirements, providing you with operating devices with the higher cost performance and better after-sales services. We always adhere to the principle of“Good Quality, Satisfied Service”, providing customers with satisfactory products and services as well as work convenience and shortcut. The hotline is shown below, and we are looking forward to hear from you: Qingdao Tel: +86-0532-86896691 Website: www.ceyear.com E-mail: [email protected] Address: No. 98, Xiangjiang Road, Qingdao City, China Postal code: 266555 The manual introduces the application, performance and features, basic principles, usage, maintenance and precautions of the 4957D/E/F microwave analyzer, facilitating your quick understanding the usage and key points of the tester. To operate the product well and provide you with higher economic effectiveness, please read the manual carefully. Mistakes and omissions can hardly be avoided due to time urgency and writer’s knowledge limit. Your valuable comments and suggestions are highly welcome! We are sorry for any inconvenience caused due to our errors. The manual is the third version of the 4957D/E/F microwave analyzer Manual, with version number of C.2. The contents hereof are subject to change without notice. -
New Color Patterning Techniques for OLED Displays
New Color Patterning Techniques for OLED Displays by Yoshitaka Kajiyama A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Doctor of Philosophy in Electrical and Computer Engineering Waterloo, Ontario, Canada, 2015 ©Yoshitaka Kajiyama 2015 Author’s Declaration I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I understand that my thesis may be made electronically available to the public. ii Abstract Organic light emitting devices (OLEDs) are light emitting devices consisting of a stack of organic semiconductors sandwiched by electrodes. Since the first report of a high-efficiency device by Tang and Van Slyke in 1987, OLEDs have attracted considerable attention, particularly for use in flat panel displays. OLEDs provide these products improved power consumption, contrast, response speed, viewing angle, and compatibility with flexible displays. The performance of OLEDs has improved considerably, especially in terms of stability and efficiency, so they can now meet the requirements for some display products. However, the commercialization of OLED displays remains limited and is hampered primarily by manufacturing issues. These issues include low manufacturing yield, high fabrication cost, and low display quality. Manufacturing issues are largely attributed to difficulties with the color patterning process, the fabrication process by which arrays of red, green and blue (RGB) OLEDs can be made side-by-side on one substrate in order to obtain a full-color display. Currently, RGB color patterning is done by sequential vacuum deposition of red, green and blue materials through a pre-patterned shadow mask, which is typically made of a thin metal sheet. -
A Comparative Study on Shadow Compensation of Color Aerial Images in Invariant Color Models Victor J
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 44, NO. 6, JUNE 2006 1661 A Comparative Study on Shadow Compensation of Color Aerial Images in Invariant Color Models Victor J. D. Tsai Abstract—In urban color aerial images, shadows cast by a normalized hue, saturation, and intensity (HSI) color space. cultural features may cause false color tone, loss of feature in- Susuki et al. [11] presented a method that applies separation formation, shape distortion of objects, and failure of conjugate of spatial frequency components and probabilistic shadow image matching within the shadow area. This paper presents an automatic property-based approach for the detection and com- segmentation in the red, green, and blue (RGB) space and pensation of shadow regions with shape information preserved in compensations of intensity and saturation values to improve complex urban color aerial images for solving problems caused by the visibility of features in shadowed regions while retaining cast shadows in digital image mapping. The technique is applied nonshadowed regions and the natural tint of shadowed regions. in several invariant color spaces that decouple luminance and Recently, Huang et al. [12] presented an imaging model of chromaticity, including HSI, HSV, HCV, YIQ, and YC C models. Experimental results from de-shadowing color aerial images of a shadows based on Phong illumination model [13] and em- complex building and a highway segment in these color models are ployed thresholding on the hue, blue, and green-blue difference evaluated in terms of visual comparisons and shadow detection components sequentially to detect shadowed areas, which were accuracy assessments. The results show the effectiveness of the then compensated by applying the Retinex technique to both proposed approach in revealing details under shadows and the shadowed and nonshadowed areas separately. -
Characterization of Color CRT Display Systems for Monochrome Applications
Characterization of Color CRT Display Systems for Monochrome Applications G. Spekowius Soft-copy presentation of medical images is becoming presented frequently on color CRT display systems. more and more important as medical imaging is Particularly, if general-purpose workstations or strongly moving toward digital technology, and health care facilities are converting to filmless hospital and PCs are used for medical viewing, color monitors radiological information management. Although most are more or less standard. These common computer medical images are monochrome, frequently they are graphic displays ate applied without any further displayed on color CRTs, particularly if general- modification. This is in contrast to the medical purpose workstations or PCs are used for medical monochrome monitors, which normally are devel- viewing. In the present report, general measurement oped especially to fulfill the high image quality and modeling procedures for the characterization of color CRT monitors for monochrome presentation are requirements of medical imaging. Because the total introduced. The contributions from the three color number of medical displays is small in comparison channels (red, green, and blue) are weighted accord- to consumer applications, there is little incentive ing to the spectral sensitivity of the human eye for for the consumer display industry to develop spe- photopic viewing. The luminance behavior and the cial color CRTs for medical imaging. Hence, the resolution capabilities of color CRT monitors are ana- lyzed with the help of photometer and charge-coupled limitations of the consumer monitor CRT also device (CCD) camera measurements. For the evalua- apply to medical usage and might limit the image tion of spatial resolution, a two-dimensional Fourier quality for some applications. -
Method of Making a Shadow Mask Verfahren Zur Herstellung Einer Schattenmaske Procédé De Fabrication D'un Masque D'ombre
Europäisches Patentamt (19) European Patent Office Office européen des brevets (11) EP 0 209 346 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) Int. Cl.7: H01J 29/07 of the grant of the patent: 01.03.2000 Bulletin 2000/09 (21) Application number: 86305399.7 (22) Date of filing: 14.07.1986 (54) Method of making a shadow mask Verfahren zur Herstellung einer Schattenmaske Procédé de fabrication d'un masque d'ombre (84) Designated Contracting States: • Tokita, Kiyoshi DE FR GB 1-1, Shibaura 1-chome Minato-ku Tokyo (JP) • Kida, Kaneharu (30) Priority: 17.07.1985 JP 15598185 1-1, Shibaura 1-chome Minato-ku Tokyo (JP) (43) Date of publication of application: (74) Representative: 21.01.1987 Bulletin 1987/04 Kirk, Geoffrey Thomas et al BATCHELLOR, KIRK & CO. (73) Proprietor: 102-108 Clerkenwell Road KABUSHIKI KAISHA TOSHIBA London EC1M 5SA (GB) Kawasaki-shi, Kanagawa-ken 210-8572 (JP) (56) References cited: (72) Inventors: EP-A- 0 139 379 EP-A- 0 156 427 • Koike, Norio GB-A- 2 080 612 US-A- 3 760 214 1-1, Shibaura 1-chome Minato-ku Tokyo (JP) US-A- 3 878 428 US-A- 4 558 252 • Matsuda, Hidemi 1-1, Shibaura 1-chome Minato-ku Tokyo (JP) • The New Encyclopaedia Britannica, 15th edition, vol.7, page 218 ("lead") Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. -
Se-7034-19 Htv-Ru710seriesdsht
RU710 Series Hospitality TVs 43" HG43RU710NFXZA 55" HG55RU710NFXZA 50" HG50RU710NFXZA 65" HG65RU710NFXZA Make every guest RU710 Series Hospitality TVs 4K UHD Edge-Lit LED TVs with outstanding detail and color. experience an Make sure your guest rooms remain the showcases of elegance you’ve designed them to be. The Samsung RU710 hospitality TVs look stunning before they’re even turned on, with unsurpassed one. stylish stands that look good from every angle, and a clean cable management system. Once your guests do power them on, the 4K UHD screens display content with exceptional detail and amazingly rich, vibrant color. And Samsung’s LYNK™ DRM technology protects content, while offering guests a seamless viewing experience. Install a premium experience in every room. Install the Samsung RU710 series TVs. Key Features 4K UHD with PurColor for Breathtaking Color Deliver the unmatched, luxury experience your guests expect with 3840 x 2160 4K UHD resolution. Offering four times the pixels of Full HD, the RU710 series showcases content in stunning, lifelike detail. PurColor technology concentrates on red, green, and blue color adjustment points, but unlike traditional LED, PurColor also adjusts magenta, yellow and cyan. The result is fine-tuned color of incredible nuance and realism. Easier, Faster Control with Home App and Eden UI The Home app installed on the RU710 allows you to easily incorporate a welcome message, add logos/branding, and provide other useful information such as phone extensions to various guest services. Displayed on the Eden user interface, it’s a sleek, fast, simple solution. HDR10+ Picture Technology for Incredible Depth 4K UHD delivers more pixels, and HDR10+ gets the most out of every one. -
Field-Sequential Colour Television Receiver
Wireless World, Seplember 1971 443 Field-sequential Colour Television Receiver I-Introduction and basic principles by T. J. Dennis, B.A. All systems of colour TV in general use higher than the flicker-fusion rate of the normal broadcast colour transmissions. today have as their display a system eye, a highly variable quantity found on A standard PAL decoder4 provides whereby the three primary coloured average in the region of 30Hz. the three (narrow band) colour difference pictures are spatially superimposed, For this reason it is normally considered signals. These are then switched in turn whether by projection of the red, green and necessary to increase the basic field rate to the grid of a monochrome c.r.t., the blue images using the Schmitt system, by from that of, say, a 50 field monochrome change taking place during the field blank the use of three c.r.ts and half-silvered standard to 150 fields per second in order ing period (see Fig. 1). The luminance mirrors or with the three pictures on one to maintain the original luminance rucker (wideband) signal is fed to the c.r.t. cathode c.r.t. whose screen consists of triads of rate. This demands a trebling of the signal as usual, after its passage through a 60005 independently controllable phosphor dots, bandwidth, other factors being constant. delay tine. This is practically the only as in the R.C.A. Sbadowmask' tube. Noting the discouraging comments of major modification needed to the mono All three systems are capable of others on the subject of f.s. -
LCD Component Data Sheet Model Number: 12864-12
PACIFIC DISPLAY DEVICES LCD Component Data Sheet Model Number: 12864-12 128 x 64 Dot STN Graphic LCD Assembly With T-6963C Graphics Controller LED / EL Panel Backlight CONTENTS 1. GENERAL INFORMATION 1.1 Product Overview 2 1.2 Part Options and Numbering System 2 1.3 Absolute Maximum Ratings 3 1.4 Circuit Block Diagram 3 1.5 Mechanical Characteristics 3 1.6 Input Signal Function 4 1.7 LCM Power, Contrast Control and Bias 4 1.8 LCD Dimensions 5 2. ELECTRICAL / OPTICAL CHARACTERISTICS 2.1 DC Electrical Characteristics 6 2.2 AC Electrical Characteristics 7 2.3 Optical Characteristics 9 2.4 LED Backlight Characteristics 11 2.5 EL Panel Backlight Characteristics 11 3. LCD CONTROLLER CHARACTERISTICS 3.1 LCD Controller Display and Control Functions (T6963) 12 3.2 LCD Controller Command List 25 3.3 LCD Controller Character Code map 26 3.4 Application Circuits 27 4. RELIABILITY 28 5. PRECAUTIONS FOR USING LCD MODULES 29 139 Avenida Victoria – Suite 100 – San Clemente, CA – 92672 Tel: 949-361-8957 – Fax: 949-361-9158 – Web: www.pacificdisplay.com SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE MODEL NO: 12864-12 1. GENERAL INFORMATION 1.1 Product Overview • 128 x 64 dot matrix LCD • STN (Super Twisted Nematic) or FSTN (Film compensated Super Twisted Nematic) Technology • T-6963 (or equivalent) Graphics Controller IC w/ 8K SRAM. • Multiplex drive : 1/64 duty, 1/9 bias • LCD Module Service Life: 100,000 hours minimum 1.2 Part Options and Numbering System 12864 -12 -SL -F -ST -ELED -GY -6 ¾ Custom Option Designator: • (-12) T6963 Graphic Controller