Display Devices & Recorders
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Digital Display Circuits This Worksheet and All Related Files Are Licensed Under the Creative Commons Attribution License, Versi
Digital display circuits This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/, or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. The terms and conditions of this license allow for free copying, distribution, and/or modification of all licensed works by the general public. Resources and methods for learning about these subjects (list a few here, in preparation for your research): 1 Questions Question 1 What is the purpose of a seven-segment decoder circuit? What is a ”seven-segment” display, and why do we need a decoder circuit to drive it? Research the part number for a typical seven-segment decoder circuit (either CMOS or TTL). file 01417 Question 2 A seven segment decoder is a digital circuit designed to drive a very common type of digital display device: a set of LED (or LCD) segments that render numerals 0 through 9 at the command of a four-bit code: Display driver IC Seven-segment display VDD a a . A b . f b c . g Inputs B d . C e . f . D g . e c d The behavior of the display driver IC may be represented by a truth table with seven outputs: one for each segment of the seven-segment display (a through g). In the following table, a ”1” output represents an active display segment, while a ”0” output represents an inactive segment: D C B A a b c d e f g Display 0 0 0 0 1 1 1 1 1 1 0 ”0” 0 0 0 1 0 1 1 0 0 0 0 ”1” 0 0 1 0 1 1 0 1 1 0 1 ”2” 0 0 1 1 1 1 1 1 0 0 1 ”3” 0 1 0 0 0 1 1 0 0 1 1 ”4” 0 1 0 1 1 0 1 1 0 1 1 ”5” 0 1 1 0 1 0 1 1 1 1 1 ”6” 0 1 1 1 1 1 1 0 0 0 0 ”7” 1 0 0 0 1 1 1 1 1 1 1 ”8” 1 0 0 1 1 1 1 1 0 1 1 ”9” Write the unsimplified SOP or POS expressions (choose the most appropriate form) for outputs a, b, c, and e. -
Symposium Digest Articles Listed Chronologically 1963-1988
Preliminary Table of Contents for SID Symposium Digests 1963-1988 ( author company affiliations not listed) Notes: 1 The index covers full papers and keynote speeches for SID Symposia from 1963 through 1988; panel sessions, seminars and luncheon speakers are not listed 2 Authors' company affiliations are not shown (to be added) 3 Lead author is designated with asterisk ( * ) 4 The first ten (10) digests were designated by number as follows 5 The first ten (10 Symposia were identified by numbers, as follows: 2/1963 -#1; 9/63 - #2; 5/64-#3; 9/64 - #4; 2/65 - #5; 9/65 - #6; 10/66 - #7; 5/67 - #8; 5/68 - #9; 5/69 - #10 Session # Year Page Title Author(s) 1963-1 1 User Requirements for Display Debons, Col, Anthony * 1963-1 13 Scan Conversion and Bright Display Porter, Richard * 1963-1 21 Multicolor Projection System Smith, Fred E.* 1963-1 31 Advanced Display Techniques through the Charactron Redman, James H.* 1963-1 53 Light Valve Display Albanese, Augustine * 1963-1 63 Colordata, A Photographic Large Screen Display system Baron, Peter C.* 1963-1 77 Human Performance Engineering and Information Display Silvern, Leonard * 1963-1 83 Multiple Projection Techniques Klein, R.C.* 1963-1 93 Photochromic Dynamic Display Hines, Logan J.* 1963-1 99 Datachrome Display System Parker, Philip A.* 1963-1 117 High Ambient Light Display Systems Miller, Wendell S.* 1963-1 127 Electroluminescent Displays Hallett, Joseph L.* 1963-1 139 Pseudo 3-D Display Perdue, Joseph L.* 1963-1 155 Aims and Purposes of the S.I.D. Vlahos, Petro * 1963-2 1 Iinformation Systems, -
Organic Light-Emitting Diode (Oled) Display Panel, Oled Display Device and Method for Driving the Same
(19) TZZ¥__T (11) EP 3 147 894 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 29.03.2017 Bulletin 2017/13 G09G 3/3225 (2016.01) G09G 3/3233 (2016.01) (21) Application number: 16190336.4 (22) Date of filing: 23.09.2016 (84) Designated Contracting States: (72) Inventors: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB • NA, Se-Hwan GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO 10895 Gyeonggi-do (KR) PL PT RO RS SE SI SK SM TR • LEE, Jae-Young Designated Extension States: 07350 Seoul (KR) BA ME • KIM, Mi-Jung Designated Validation States: 06923 Seoul (KR) MA MD (74) Representative: Viering, Jentschura & Partner (30) Priority: 25.09.2015 KR 20150136459 mbB Patent- und Rechtsanwälte (71) Applicant: LG Display Co., Ltd. Am Brauhaus 8 Yeongdeungpo-gu 01099 Dresden (DE) Seoul 07336 (KR) (54) ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY PANEL, OLED DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME (57) Disclosed herein are an OLED display panel (410) further including a switching transistor (T-SW) for controlling application of supply voltage (VDD_EL) in the initializing interval of a pixel (P), an OLED display device including the same, and a method for driving the same. The OLED display panel (410) avoids a short-circuit be- tween supply voltage VDD_EL and reference voltage Vref to thereby reduce initialization voltage applied to the gate terminal of the driving transistor T_dr. The OLED display device can achieve various effects such as im- proved response characteristics of pixels by reducing de- viation in the initial voltage used in sampling. -
Energy Balance of a High- Pressure Sodium Arc Tube
Energy balance of a high- pressure sodium arc tube H idezoh AKUTSU* and Naoki SAITO** This paper describes in detail the dependence of the energy batance of a high・pressure sodium arc tube on discharge parameters. The total radiation and the thermal conduction loss of the arc tube were estimated by calculating the thermal dissipation loss from the measured wall tem- perature of the tube envelope. The results thus estimated showed a rea- sonable consistency with experimental data on the absolute visible radiant power and the published results by previous authors as well. in the low sodium vapor pressure region, the total radiation Pr (W/cm) is influenced sharply by various discharge parameters, while in the high sodium vapor pressure region (above about 70 to 100 Torr), it is deter- mined mainly by the power input Pin (W/cm) through the linear equation Pr;~~0.80 (Pin-6.7) for a sapphire arc tube. It has been concluded that the high efficacy of a high-pressure sodium lamp stems from the low thermal conduotion loss of its arc tube, as well as its high luminous efficacy of visible radiation. properties of the arc tube. Furthermore, a gen- 1. Introduction eral guidance fcr improving the luminous ef ficacy Knowledge about the energy balance in an arc of a high-pressure sodium lamp is shown. tube of a lamp will offer a foothold not only for understanding the processes occurring in the arc tube also fcr improving its luminous efficacy. The 2. Experimental procedures energy balance of a high-pressure sodium arc tube Fig. -
Virtual Reality and Augmented Reality a Survey from Scania’S Perspective
EXAMENSARBETE INOM MASKINTEKNIK, AVANCERAD NIVÅ, 30 HP STOCKHOLM, SVERIGE 2019 Virtual Reality and Augmented Reality A Survey from Scania’s Perspective KARL INGERSTAM KTH SKOLAN FÖR INDUSTRIELL TEKNIK OCH MANAGEMENT Virtual Reality and Augmented Reality A Survey from Scania’s Perspective Karl Ingerstam 2019 Master of Science Thesis TPRMM 2019 KTH – Industrial Engineering and Management Production Engineering SE-100 44 Stockholm Abstract Virtual reality and augmented reality are technological fields that have developed and expanded at a great pace the last few years. A virtual reality is a digitally created environment where computer- generated elements are displayed to a user via different interfaces for the respective senses. Video is used for displaying images, creating a realistic environment, while audio is played to stimulate hearing and other sorts of feedback is used to stimulate the sense of touch in particular. Augmented reality is a sub-category of virtual reality where the user sees the real surroundings, but computer-generated imagery is displayed on top of objects in the environment. This type of technology brings a lot of new possibilities and potential use cases in all sorts of areas, ranging from personal entertainment, communication and education to medicine and heavy industry. Scania is a global manufacturer of heavy trucks and buses, and provider of related services, based in Sweden. By studying Scania’s different departments and surveying the fields of virtual reality and augmented reality, the aim of this thesis is to identify situations and use cases where there is potential for Scania to implement virtual reality and augmented reality technology. This thesis also studies what obstacles implementation of these technologies bring. -
What Is LCD (Liquid Crystal Display)?
UNIT - IV DISPLAY DEVICES SPH 1102- PHYSICS OF ELECTRON DEVICES TOPICS COVERED: Introduction - what is display devices? - Luminescence - Electroluminescence Active Display Devices - CRT – Cathode Ray Tube - LED – Light Emitting Diode Passive Display Devices - LCD – Liquid Crystal Display - Plasma Display - Dynamic Scattering Display - Touch screen INTRODUCTION Definition: - A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input information is supplied as an electrical signal, the display is called an electronic display. - Display devices are used for the visual presentation of information. Types of display devices: Electronic display devices based on various principles were developed. - Active display devices are based on luminescence. - Passive display devices reflect or modulate light LUMINESCENCE Definition: Luminescence is the general term used to describe the emission of electromagnetic radiation from a substance due to a non-thermal process. Luminescence occurs from a solid when it is supplied with some form of energy. Types of Luminescence: - Photoluminescence arises as a result of absorption of photons. - Fluorescence persists for a short lifetime of the transition between the two energy levels. - Phosphorescence persists for much longer time (more than 10-8 s). -Cathodoluminescence - Excitation of electrons by bombardment with a beam of electrons. -Electroluminescence - Excitation of electrons by application of an electric field. - Thermoluminescence – Excitation of electrons by the application of High temperature. - Chemiluminescence - Excitation of electrons due to chemical reaction. Active Display Devices Electronic visual displays present visual information according to the electrical input signal (analog or digital) by emitting light, they are called active displays. -
United States Patent [191 [11] 3,814,971 Bhattacharya ‘ [45] June4, 1974
United States Patent [191 [11] 3,814,971 Bhattacharya ‘ [45] June4, 1974 154] FILL GAS MIXTURE FOR GLOW LAMPS 2,824,985 2/1958 Foulke .......................... .. 313/226 X [75] - Inventor: Ashok K. Bhattacharya, Lyndhurst, > Ohio v Primary Examiner—Herman Karl Saalbach Assistant Examiner~siegfried H. Grimm [73] Assignee: General Electric Company, Attorney, Agent, or Firm—Emil F. Sos, Jr.; Lawrence ‘ Schenectady, NY. R. Kempton; Frank L. Neuhauser [22] Filed: Mar. 1, 1973 [211 App]. No.: 336,980 [ 5 7 ] ABSTRACT A glow lamp for use as a circuit component or indica [52] US. Cl. ....... .; ...................... .. 313/226, 313/210 tor lamp comprising an envelope, electrodes, lead-in [51] Int. Cl. .......................................... .. H0lj 61/16 wires connected to the electrodes and sealed in said [58] Field of Search ........... .. 313/210, 226; 315/358 envelope, the envelope contains a Penning mixture of neon and xenon with the xenon varying from 0.001 [56] References Cited percent to 1.0 percent by volume. The use of the xe non-neon Penning mixture increases the life of the UNITED STATES PATENTS lamp without substantially increasing breakdown volt 1,949,069 2/1934 Balcar ........................... .. 313/226 X age. 1,977,688 10/1934 Miesse . , . .. 313/226 X 2,622,221 12/1952 Beese ................................ .. 313/109 5 Claims, 1 Drawing Figure 3,814,971 1 2 FILL GAS MIXTURE FOR GLOW LAMPS glow lamps, would produce results which differ from BACKGROUND OF THE INVENTION those between 100 to 1,000 electron volts. Therefore, since argon has the second lowest sputtering rate and 1. Field of the Invention xenon the highest, it would be expected that a neon The invention relates to discharge devices with par 5 lamp containing an argon additive would have a longer ticular gas or vapor ?llings. -
A Low Cost Holographic Display
A Low Cost Holographic Display Mark Green University of Ontario Institute of Technology Figure 1: (a) Prototype holographic display (left), (b) Image of wireframe truncated pyramid as displayed in the prototype display Abstract 1 Introduction Holography can be viewed as the ultimate display technology since In many ways holography is the ultimate display device capturing it correctly duplicates all the cues used by our visual system. In the all aspects of the light energy that is reflected or emitted by the graphics community this technology has largely been ignored in the environment. This includes all the cues that our visual system past due to its computational cost, but this is changing as more expects. This differs from other display technologies, such as head powerful parallel processors are becoming available. One of the mounted displays (HMDs) that present conflicting cues to the main challenges in this area is the lack of a commercially available viewer. In the case of an HMD the images are displayed on a fixed display device at a reasonable cost that can be used for testing and plane producing focus and accommodation cues suggesting that all evaluating algorithms. This paper describes a low cost holographic the objects are at the same depth, while the stereo and projection display device that can easily be constructed from standard parts as cues suggest they are at different depths. This causes fatigue and a solution to this problem. This paper discusses the design other visual problems. Light field displays are a step forward, but considerations for such a device, its construction and an overview only provide correct 3D cues over a limited depth range of how holograms can be computed for it. -
Chapter 2 Incandescent Light Bulb
Lamp Contents 1 Lamp (electrical component) 1 1.1 Types ................................................. 1 1.2 Uses other than illumination ...................................... 2 1.3 Lamp circuit symbols ......................................... 2 1.4 See also ................................................ 2 1.5 References ............................................... 2 2 Incandescent light bulb 3 2.1 History ................................................. 3 2.1.1 Early pre-commercial research ................................ 4 2.1.2 Commercialization ...................................... 5 2.2 Tungsten bulbs ............................................. 6 2.3 Efficacy, efficiency, and environmental impact ............................ 8 2.3.1 Cost of lighting ........................................ 9 2.3.2 Measures to ban use ...................................... 9 2.3.3 Efforts to improve efficiency ................................. 9 2.4 Construction .............................................. 10 2.4.1 Gas fill ............................................ 10 2.5 Manufacturing ............................................. 11 2.6 Filament ................................................ 12 2.6.1 Coiled coil filament ...................................... 12 2.6.2 Reducing filament evaporation ................................ 12 2.6.3 Bulb blackening ........................................ 13 2.6.4 Halogen lamps ........................................ 13 2.6.5 Incandescent arc lamps .................................... 14 2.7 Electrical -
Technical Summaries
TECHNICAL SUMMARIES www.electronicimaging.org Conferences and Courses 8–12 February 2015 Location Hilton San Francisco, Union Square San Francisco, California, USA www.electronicimaging.org • TEL: +1 703 642 9090 • [email protected] 1 2015 Symposium Chair Sheila S. Hemami Contents Northeastern Univ. (USA) 9391: Stereoscopic Displays and Applications XXVI ............................... 3 9392: The Engineering Reality of Virtual Reality 2015............................. 25 9393: Three-Dimensional Image Processing, Measurement (3DIPM), and Applications 2015 ...................................................... 33 2015 Symposium 9394: Human Vision and Electronic Imaging XX .................................45 Co-Chair 9395: Color Imaging XX: Displaying, Processing, Hardcopy, and Applications ....... 72 Choon-Woo Kim 9396: Image Quality and System Performance XII................................89 Inha Univ. 9397: Visualization and Data Analysis 2015.......................................111 (Republic of Korea) 9398: Measuring, Modeling, and Reproducing Material Appearance 2015 ...........117 9399: Image Processing: Algorithms and Systems XIII ............................139 9400: Real-Time Image and Video Processing 2015...............................161 9401: Computational Imaging XIII..............................................174 2015 Short Course 9402: Document Recognition and Retrieval XXII .................................184 Chair 9403: Image Sensors and Imaging Systems 2015.................................189 Majid Rabbani 9404: Digital -
Evaluating Speech-To-Text Systems and AR-Glasses a Study to Develop a Potential Assistive Device for People with Hearing Impairments
UPTEC STS 21009 Examensarbete 30 hp Februari 2021 Evaluating Speech-to-Text Systems and AR-glasses A study to develop a potential assistive device for people with hearing impairments Siri Eksvärd Julia Falk Abstract Evaluating Speech-to-Text Systems and AR-glasses Siri Eksvärd and Julia Falk Teknisk- naturvetenskaplig fakultet UTH-enheten Suffering from a hearing impairment or deafness has major consequences on the individual's social life. Today, there exist various aids, but there are some challenges Besöksadress: with these, like availability, reliability and high cognitive load when the user trying to Ångströmlaboratoriet Lägerhyddsvägen 1 focus on both the aid and the surrounding context. To overcome these challenges, Hus 4, Plan 0 one potential solution could make use of a combination of Augmented Reality (AR) and speech-to-text systems, where speech is converted into text that is then Postadress: presented in AR-glasses. However, in AR, one crucial problem is the legibility and Box 536 751 21 Uppsala readability of text under different environmental conditions. Moreover, different types of AR-glasses have different usage characteristics, which implies that a certain type of Telefon: glasses might be more suitable for the proposed system than others. For 018 – 471 30 03 speech-to-text systems, it is necessary to consider factors such as accuracy, latency Telefax: and robustness when used in different acoustic environments and with different 018 – 471 30 00 speech audio. Hemsida: In this master thesis, two different AR-glasses are being evaluated based on the http://www.teknat.uu.se/student different characteristics of the glasses, such as optical, visual and ergonomic. -
An Overview Contents
Neon An overview Contents 1 Overview 1 1.1 Neon .................................................. 1 1.1.1 History ............................................ 1 1.1.2 Isotopes ............................................ 2 1.1.3 Characteristics ........................................ 2 1.1.4 Occurrence .......................................... 3 1.1.5 Applications .......................................... 3 1.1.6 Compounds .......................................... 4 1.1.7 See also ............................................ 4 1.1.8 References .......................................... 4 1.1.9 External links ......................................... 5 2 Isotopes 6 2.1 Isotopes of neon ............................................ 6 2.1.1 Table ............................................. 6 2.1.2 References .......................................... 6 3 Miscellany 8 3.1 Neon sign ............................................... 8 3.1.1 History ............................................ 8 3.1.2 Fabrication .......................................... 9 3.1.3 Applications .......................................... 12 3.1.4 Images of neon signs ..................................... 13 3.1.5 See also ............................................ 13 3.1.6 References .......................................... 13 3.1.7 Further reading ........................................ 14 3.1.8 External links ......................................... 14 3.2 Neon lamp ............................................... 14 3.2.1 History ...........................................