Llij-Uiii1iiiiiuij
Total Page:16
File Type:pdf, Size:1020Kb
= Official Monthly Publication of the Society for Information Display - -~ .- ~ ...-.~ .._, ~----- .-. :;~i; -______________- - ,::5~[:: lliJ-Uiii1iiiiiUIJ March 1988 n1c I DU --ea=---- ---~--- --------- -- ~- Vol. 4, No. 3 :s -.._. -----.---._,--- - PS/2 graphics Image processing primer Sl D '88 preview ''At lunch today, I learned to use this progratntnable video generator. And still had titne to eat.'' While other RGB video generators wide-band video transmission systems. that's right for you. Then, in just 30 min take weeks to learn, ours take minutes. Present or future. utes, we'll show you how to use it. No digital training needed. No countless Analog, TTL and ECL outputs. 125 It'll be up and running before you finish key combinations to learn. No need to MHz. 64-color capability. Storage of up your lunch. use your PC unless you want to. Unlike to 200 display formats. Wide range of other generators, Leader's have an inte- raster architectures, and most common Call toll-free gral programmer (LVG-1 604A and test patterns with both stock and user- 1603A) or are available with a program- designed characters. Ability to change 1 800 645 .. 5104 mer unit (1601A). And you can get any format conditions. These features are In NY State of dozens of test patterns simply by easy to learn-but hard to beat. 516 231 .. 6900 touching one clearly "f!!~~~~r-------, marked key. ~ Leader Instruments Corporation Now you 380 Oser Avenue, Hauppauge, New York 11 788 All the can choose. Regional Offices: functions You shouldn't pay Chicago, Dallas, Los Angeles, Boston, Atlanta you need. for more functions In Canada call Omnitronix Ltd. 416 828·6221 The LVG-1604A thanyou need. So lets you test even the call us for a free most advanced high f copy of our full-line resolution CRT's and Select a Leader VIdeo Generator catalog. Pick the LEADER with all the features you need. FOR PROFESSIONALS WHO KNOW video generator THE DIFFERENCE Circle no. 1 CD Full color graphics with programmable frequencies. ® A disk full of "Instant Expert~" test patterns that put the power of OPIX in your hands "right now11 and cut hours off the learning curve. ® A user interface designed for monitor testing. G) Full text capability with fixed and proportional spacing. ® 1.56-200 MHz pixel rate in monochrome and color. ® Ultra fast precision analog outputs-256 levels. (j) Multiple outputs-differential TTL, ECL & analog. ® An palette of 16 million colors to choose from. @ Custom images you can design, use and store. @ Terminal and system interfaces-RS232 & IEEE488. @ Mass storage on floppy disks. @ Four sync channels with programmable pixel time. @ Flexible units-pixels, frequency and time. CALL US FOR A FREE VIDEO TAPE ON OPIX. We have an exciting video tape that demonstrates OPIX capabilities. Call for your copy and see how user-friendly a signal generator can be. You won't find a better signal generator anywhere! QUANTUM DATA, 2111 Big Timber Road, Elgin,IL 60123. Phone: (312) 888-0450 FAX: 888-2802 Telex 206725 RGB Delay Circle no. 2 To engineer low defect large format mask blanks, HOYA goes the extra micron. Hoya goes far beyond minimum standards substrates are double-side polished with beveled to guarantee quality large-fonnat mask blanks. edges. T he outstanding uniformity of the chrome They're now available up to 14"x 14". By apply and resist film assures excellent dimension con ing years of extensive engineering and manu trol. And Hoya's exclusive new edge-to-edge facturing improvements in I. C. photoblank unifonn resist coating delivers expanded imaging manufacturing, Hoya can produce volume large capability to 100 percent of the plate. Various blanks with extremely low defect and tight image layers such as AI, ITO, MoSi:2 and others tolerance integrity for the glass substrate as well are provided upon request. as chromium and resist film layers. All Hoya large fonnat mask blanks are manu What does our technological progress factured in Class 100 Clean Rooms. The preci mean to you? It means versatility, one-pass yield, sion and process monitors ofHoya's automated quicker turnaround and long-lasting quality manufacturing line assures the production oflarge perfonnance. blanks that are particle and damage resistant due These large, hard-surface chromium on to reduction in physical handling, environment glass substrates provide the thennal expansion control and separation by our lightweight multi stability of glass, the pro carrier packaging. cess reliability of chrome So long-tenn, they and uniformity of spin-coat won't take a big bite out of resist for superior imaging your budget. And short needed in such precision tenn, their very low defect circuit and pattern applica rate reduces repair, inspec tions as large area electron tion, and delivery times from ics, surface-mount designs, day one. That's what going fine-line printed circuit the extra micron does for you. boards, flat panel displays For more infonnation, and hybrid circuits. call HOYA Electronics Available also in rec Corporation: In CA, (40 8) tangular or circular config 435-1450; NJ, (201) 307- uration applications, the 0003; TX, (214) 450-4410. The image of tomorrow Circle no. 3 =Official Monthly Publication of the Society for Information Display 111TUn1•1n I lUll MARCH 1988 niCDI DU VOL. 4, NO.3 -= - = Cover: Trailing mandrill image was created by raster copying at a 4 Letters speed of 12.5 million pixels per second using a Matrox PG2-1281 graphics 5 Editorial processor. image is displayed at a resolution of 1280 x 1084 on the 6 PS/2 graphics: fight or switch? Mitsubishi HG6905 monitor. How does IBM's VGA stack up against competing PC graphics (page 6) adapters? Is it good enough for professional engineering applications? Susan Verrecchia 12 A very brief digital image processing primer A first step into the murky waters of image processing. Bruce Mackie 15 SID '88 preview Pluto's on plasma and Mickey's on matrix. Anaheim, Califor nia, here we come! Photo: Matrox Electronic Systems 20 Sustaining Members 20 Index to Advertisers 23 Have You Read ... ? Next Month in Information Display Image Science Issue • DVI-digital video from a CD-ROM • Displaying the Gospels • The new ac plasma technology Information Display 3188 3 -------------------- - References to early Further, Mr. Credelle states: "To make The author replies- LCD work are misleading high-resolution color LCDs, the active In my article "Recent Trends in Color matrix approach was proposed and Avionic LCDs," I included a short list of In your November issue, you published an demonstrated in the early 1970s," and references to indicate to the reader when article by Thomas Credelle entitled "Re gives as his reference a paper by Paul TFT-LCD technology development began. cent T rends in Color Avionic LCDs," Weimer (RCA Rev, 32, 25 1, 197 1). lf any It was not my intent to mislead the reader which has references to the early work on of your readers follow up this reference, or give undue credit to RCA liquid crystals and active-matrix displays they will be surprised to find that Laboratories. that misleadingly convey the impression Weimer's paper is entitled "Systems and Dr. Brody, who was one of the early that all the significant early work on Technologies fo r Solid-State Sensors" and pioneers of CdSe TFTs and TFT-LCDs, active-matrix LCDs was carried out at contains not a single solitary reference to has correctly pointed out that the RCA Laboratories. displays, LCDs, active matrix, or color! Heilmeier work was on dynamic-scattering His reference to Heilmeier's 1968 paper LCDs and not on twisted-nematic LCDs, on dynamic-scattering LCDs is unobjec - T. Peter Brody, President which were developed by Schadt and tionable, but certainly the article should Active Matrix A ssociates Helfrich three years later. It was the also have referred to the basic paper by Pillsburgh, Pennsylvania Heilmeier work that started the LCD Schadt and Helfrich (Appl. Phys. Let/. development, however, so this is an ap 18, 127, 197 1), which is the first publica propriate reference to the beginnings of tion on the now universally used twisted the LCD revolution. nematic principle. Dr. Brody correctly points out that the Weimer reference is not the complete story on early TFT array developrm:ut; the first published paper on TFTs was by Dr. Paul Weimer in 1962 ("The TFT- A New Thin-Film Transistor," Proc. IRE, 50, 1462, 1962). The paper referenced in YOUR MAGNETIC SHIELDING my article was a review of the first TFT arrays (albeit for image sensors and not PROBLEMS END HERE displays), the forerunner to all modern Save tooling costs-Ad-Vance already owns tooling for TIT-addressed LCDs. The concept for most standard shie lds. Our problem solv1ng magnet1c shielding specialists wil l adapt or custom design exactly TFT-addressed LCDs was published in what you need. 1971 by B. Lechner et al. ("Liquid • Magnetic ahlelda for 324types of PM tubes Crystal Matrix Displays," Proc. IEEE, • AO·MU aheet atock 59, (I I), Nov. 1971, p. 1566); the first • AD·MU protective caaea assure full fidelity of valuable taped data AD-MU foils cut. wrap easily. quickly operational TFT-LCD was described by • Helpful engineering & design service ~ A. Fischer et al. in 1972 (!EEE/ SID Con • Painstaking ln·houae quality control. ference Record, Oct. 1972, p. 64). Now-4 decades of magnetic shielding leadership. r I Your magnetic shielding problems end here at Ad-Vance. - Thomas L. Credel/e, Manager t,.iJ; Display Program --~~.... )\- General Electric Corporate ' Research and Development Schenectady, New York Gives major designing/ procuring guidelines. 213 of 84-page book conta1ns val uable technical/engineer ing Information about the What is your opinion? lD's editors entire ma~nelic shielding field ; 113 IS catalog data.