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Oct 8, 2020
10/20
by
Kolodner, Janet L
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xiv, 263 pages : 24 cm
Topics: Memory -- Data processing, Recollection (Psychology) -- Data processing
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Service Manual: Sanyo DP19640 P19640 02 N8ZF
Topics: eeprom, lcd, supplement, memory, soic, pcb, data, sanyo, module, manual, memory data, data eeprom
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May 31, 2011
05/11
by
Knight, Norman F., Jr.; Stone, Thomas J
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Advanced aerospace systems are becoming increasingly more complex, and customers are demanding lower cost, higher performance, and high reliability. Increased demands are placed on the design engineers to collaborate and integrate design needs and objectives early in the design process to minimize risks that may occur later in the design development stage. High performance systems require better understanding of system sensitivities much earlier in the design process to meet these goals. The...
Topics: OPTICAL MEMORY (DATA STORAGE), HOLOGRAPHY, SPHERICAL WAVES, DOPED CRYSTALS, IRON, LITHIUM NIOBATES,...
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May 28, 2011
05/11
by
Spangenberg, Dorothy B
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The Aurelia Metamorphosis Test System was previously used to determine the effects of the space environment on the development and behavior of tiny (1-2 mm) jellyfish ephyrae during the SLS-1 and IML-2 missions. Results from the SLS-1 experiment included the discovery that statolith numbers were significantly reduced in Earth-formed ephyrae flown for nine days in space as compared with ground-based controls. In addition, upon return to Earth, six times more ephyrae which had developed in space...
Topics: CRYOGENIC TEMPERATURE, DIFFRACTION, HOLOGRAPHY, DATA STORAGE, OPTICAL DATA PROCESSING, OPTICAL...
The current status of semiconductor, magnetic, and optical memory technologies is described. Projections based on these research activities planned for the shot term are presented. Conceptual designs of specific memory buffer pplications employing bipola, CMOS, GaAs, and Magnetic Bubble devices are discussed.
Topics: NASA Technical Reports Server (NTRS), COMPUTER STORAGE DEVICES, TECHNOLOGY ASSESSMENT, BUFFER...
A video observation method and apparatus, the apparatus having a frame storage mechanism, a dividing mechanism, a plurality of fuzzy comparators and a trigger signal mechanism. The frame storage mechanism stores at least one non-current video frame of a viewing field. The dividing mechanism divides a current video frame of the viewing field and the at least one non-current video frame into a plurality of corresponding trigger sections. The plurality of fuzzy comparators each compare and detect...
Topics: NASA Technical Reports Server (NTRS), ACTUATORS, COMPARATORS, FUZZY SYSTEMS, VIDEO DATA, OPTICAL...
Articles on electronics systems and techniques were presented. The first section is on displays and other electro-optical systems; the second section is devoted to signal processing. The third section presented several new memory devices for digital equipment, including articles on holographic memories. The latest patent information available is also given.
Topics: NASA Technical Reports Server (NTRS), COMPUTER STORAGE DEVICES, DISPLAY DEVICES, SIGNAL PROCESSING,...
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Aug 2, 2010
08/10
by
Inglehart, James; Nelson, Peter C
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An expert system has been developed using the C Language Integrated Production System (CLIPS) that automates the process of constructing DNA sequence based phylogenies (trees or lineages) that indicate evolutionary relationships. LinkFinder takes as input homologous DNA sequences from distinct individual organisms. It measures variations between the sequences, selects appropriate proportionality constants, and estimates the time that has passed since each pair of organisms diverged from a...
Topics: DATA STORAGE, OPTICAL EQUIPMENT, RADII, SUBSTRATES, FRESNEL LENSES, LENS DESIGN, MINIATURIZATION,...
National Climatic Data Center (NCDC) data management issues are discussed, such as nature of holdings, history of the site, popularity of data sets, media/technology used for storage, volume distributed per month, mode of distribution, most frequently encountered problems, type of media requested/used, and evolution of media. Current holdings at NCDC are 107.8 terabytes of digital data and about 0.3 terabytes of manuscript data. The nexrad radar system is expected to generate approximately 88...
Topics: NASA Technical Reports Server (NTRS), DATA MANAGEMENT, DATA STORAGE, DATA SYSTEMS, CLIMATOLOGY,...
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Service Manual: Sharp LC 26SH12U FINAL SUPP 1
Topics: diode, transistor, zener, rtk, silicon, fet, schottky, pcb, beads, compound, transistor silicon,...
The topics covered include the following: optical recording; how does it work?; why all the fuss?; state of the industry; sample applications; and future directions.
Topics: NASA Technical Reports Server (NTRS), DATA RECORDING, DATA STORAGE, OPTICAL DATA PROCESSING,...
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Sep 20, 2010
09/10
by
Blake, Jean A
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NASA Spacelink, a proven resource medium, may be accessed over telephone lines or via the Internet by teachers or anyone with a computer or modem. It is a collection of historical and current information on NASA programs and activities. Included in this library is information on a variety of NASA programs, updates on Shuttle status, news releases, aeronautics, space exploration, classroom materials, NASA Educational Services, and computer programs and graphics. The material stored in Spacelink...
Topics: CONFERENCES, MANAGEMENT SYSTEMS, MEMORY (COMPUTERS), ORGANIZATIONS, DATA STORAGE, EARTH SCIENCES,...
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xv, 284 pages : 24 cm
Topics: Optical storage devices, Optical disks, Image processing -- Digital techniques, Optische...
Thin deformable films were investigated for use as the storage medium in a holographic optical memory. The research was directed toward solving the problems of material fatigue, selective heat addressing, electrical charging of the film surface and charge patterning by light. A number of solutions to these problems were found but the main conclusion to be drawn from the work is that deformable media which employ heat in the recording process are not satisfactory for use in a high-speed...
Topics: NASA Technical Reports Server (NTRS), FATIGUE (MATERIALS), HOLOGRAPHY, OPTICAL MEMORY (DATA...
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Jul 11, 2010
07/10
by
Davis, D. D
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The technique of flash photolysis-resonance fluorescence was utilized to study nine reactions of stratospheric importance. The tropospheric degradation reactions of seven halogenated hydrocarbons were studied to assess their possible influx into the stratosphere. There are reactions of either Cl, OH, or O(3P) species with hydrogenated species, O3 or chlorinated compounds. Apart from the kinetic measurements, the quantum yield for the production of O(1D) from O3 in the crucial wavelength region...
Topics: DATA ACQUISITION, MICROPROCESSORS, OPTICAL MEMORY (DATA STORAGE), STRUCTURAL VIBRATION, SYSTEMS...
Specially designed focusing of light beams has been proposed as a means of improving the performances of optical buffers based on cells containing hot atomic vapors (e.g., rubidium vapor). There is also a companion proposal to improve performance by use of incoherent optical pumping under suitable conditions. Regarding the proposal to use focusing: The utility of atomic-vapor optical buffers as optical storage and processing devices has been severely limited by nonuniform spatial distributions...
Topics: NASA Technical Reports Server (NTRS), ELECTROMAGNETIC ABSORPTION, LIGHT BEAMS, OPTICAL MEMORY (DATA...
A new holographic image storage device which uses four-wave mixing in two photorefractive crystals is described. Photorefractive crystals promise information storage densities on the order of 10(exp 9) to 10(exp 12) bits per cubic centimeter at real-time rates. Several studies in recent years have investigated the use of photorefractive crystals for storing holographic image information. However, all of the previous studies have focused on techniques for storing information in a single crystal....
Topics: NASA Technical Reports Server (NTRS), DATA STORAGE, HOLOGRAPHY, OPTICAL MEMORY (DATA STORAGE), REAL...
The Space Acceleration Measurement System (SAMS) project and flight units are briefly described. The SAMS operations during the STS-40 mission are summarized, and a preliminary look at some of the acceleration data from that mission are provided. The background and rationale for the SAMS project is described to better illustrate its goals. The functions and capabilities of each SAMS flight unit are first explained, then the STS-40 mission, the SAMS's function for that mission, and the...
Topics: NASA Technical Reports Server (NTRS), ACCELEROMETERS, MICROGRAVITY, MICROGRAVITY APPLICATIONS,...
The optical disk is an emerging technology. Because it is not a magnetic medium, it offers a number of distinct advantages over the established form of storage, advantages that make it extremely attractive. They are as follows: (1) the ability to store much more data within the same space; (2) the random access characteristics of the Write Once Read Many optical disk; (3) a much longer life than that of traditional storage media; and (4) much greater data access rate. Software for Optical...
Topics: NASA Technical Reports Server (NTRS), OPTICAL DISKS, OPTICAL MEMORY (DATA STORAGE), USER MANUALS...
This paper discusses the research completed under the NASA-ASEE summer faculty fellowship program. The project involves development of an Application Specific Integrated Circuit (ASIC) to be used as a Memory Buffer Controller (MBC) in the Spacecraft Optical Disk System (SODR). The SODR system has demanding capacity and data rate specifications requiring specialized electronics to meet processing demands. The system is being designed to support Gigabit transfer rates with Terabit storage...
Topics: NASA Technical Reports Server (NTRS), APPLICATION SPECIFIC INTEGRATED CIRCUITS, BUFFER STORAGE,...
The primary objective of the Space Acceleration Measurement Systems (SAMS) project is to provide an acceleration measurement system capable of serving a wide variety of space experiments. The design of the system being developed under this project takes into consideration requirements for experiments located in the middeck, in the orbiter bay, and in Spacelab. In addition to measuring, conditioning, and recording accelerations, the system will be capable of performing complex calculations and...
Topics: NASA Technical Reports Server (NTRS), ACCELERATION (PHYSICS), ACCELEROMETERS, INTERACTIVE CONTROL,...
The STScI optical disk project was designed to explore the options, opportunities and problems presented by the optical disk technology, and to see if optical disks are a viable, and inexpensive, means of storing the large amount of data which are found in astronomical digital imagery. A separate workstation was purchased on which the development can be done and serves as an astronomical image processing computer, incorporating the optical disks into the solution of standard image processing...
Topics: NASA Technical Reports Server (NTRS), ASTRONOMY, COMPUTER STORAGE DEVICES, IMAGE PROCESSING,...
The feasibility of producing a page composer for optical memory systems using thin, deformable, membrane-mirror elements as light valves was investigated. The electromechanical and optical performances of such elements were determined both analytically and experimentally. It was found that fast switching (approximately 10 microseconds), high-contrast (10 or greater), fatigue-free operation over missions of cycles, and efficient utilization of input light could be obtained with membrane light...
Topics: NASA Technical Reports Server (NTRS), HOLOGRAPHY, MEMBRANES, OPTICAL MEMORY (DATA STORAGE),...
A comprehensive overview of the different types of optical storage technology is presented. Research efforts to integrate this technology into the VAX/VMS environment are discussed. In addition, plans for future applications of optical disk technology are described. The applications should prove to be beneficial to the NSSDC user community as a whole. Of particular interest is the concentration on the collaboration with the Dynamics Explorer project.
Topics: NASA Technical Reports Server (NTRS), OPTICAL DISKS, OPTICAL MEMORY (DATA STORAGE), READ-ONLY...
An ongoing technical assessment and requirements definition project is examining the potential role of digital imaging technology at NASA's STI facility. The focus is on the basic components of imaging technology in today's marketplace as well as the components anticipated in the near future. Presented is a requirement specification for a prototype project, an initial examination of current image processing at the STI facility, and an initial summary of image processing projects at other sites....
Topics: NASA Technical Reports Server (NTRS), CHARACTER RECOGNITION, IMAGE PROCESSING, IMAGING TECHNIQUES,...
Biochrome photosensitive films in particular Bacteriorhodopsin exhibit features which make these materials an attractive recording medium for optical data storage and processing. Bacteriorhodopsin films find numerous applications in a wide range of optical data processing applications; however the short-term memory characteristics of BR limits their applications for holographic data storage. The life-time of the BR can be extended using cryogenic temperatures [1], although this method makes the...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC TEMPERATURE, HOLOGRAPHY, DATA STORAGE, OPTICAL DATA...
Several ways of measuring spot quality are compared. We examine in detail various figures of merit such as full width at half maximum (FWHM), full width at 1/(e exp 2) maximum, Strehl ratio, and encircled energy. Our application is optical data storage, but results can be applied to other areas like space communications and high energy lasers. We found that the optimum figure of merit in many cases is Strehl ratio.
Topics: NASA Technical Reports Server (NTRS), DATA STORAGE, FIGURE OF MERIT, LASER OUTPUTS, OPTICAL MEMORY...
The results of a number of theoretical and experimental studies relating to multiple hologram recording in lithium niobate are reported. The analysis of holographic gratings stored in lithium niobate has been extended to cover a more realistic range of physical situations. A new successful dynamic (feedback) theory for describing recording, nondestructive reading, erasure, enhancement, and angular sensitivity has been developed. In addition, the possible architectures of mass data storage...
Topics: NASA Technical Reports Server (NTRS), GRATINGS (SPECTRA), HOLOGRAPHIC INTERFEROMETRY, LITHIUM...
An optical system for auto-associative and hetero-associative recall utilizing Hamming distance as the similarity measure between a binary input image vector V(sup k) and a binary image vector V(sup m) in a first memory array using an optical Exclusive-OR gate for multiplication of each of a plurality of different binary image vectors in memory by the input image vector. After integrating the light of each product V(sup k) x V(sup m), a shortest Hamming distance detection electronics module...
Topics: NASA Technical Reports Server (NTRS), ANALOGIES, DISTANCE, GATES (CIRCUITS), LOGIC CIRCUITS,...
The MASTER 1 optical mass storage system advanced working model (AWM) was designed to demonstrate recording and playback of imagery data and to enable quantitative data to be derived as to the statistical distribution of raw errors experienced through the system. The AWM consists of two subsystems, the recorder and storage and retrieval. The recorder subsystem utilizes key technologies such as an acoustic travelling wave lens to achieve recording of digital data on fiche at a rate of 30...
Topics: NASA Technical Reports Server (NTRS), COMPUTER SYSTEMS DESIGN, DATA RECORDERS, DATA RETRIEVAL, DATA...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: 21xx :: interfaces :: 12895
Topics: dma, err, program, test, set, code, select, diagnostic, select code, memory data, word count,...
From the bitsavers.org collection, a scanned-in computer-related document. interdata :: 16bit :: model70 :: 29-266R01 Mod70Maint Apr72
Topics: memory, data, rom, address, processor, bus, device, chassis, byte, selector channel, memory...
From the bitsavers.org collection, a scanned-in computer-related document. nd :: ND821 MaintMan
Topics: memory, instruction, logic, data, content, signal, address, multiplexer, table, memory field,...
Optical disk-based information systems are being used in private industry and many Federal Government agencies for on-line and long-term storage of large quantities of data. The storage devices that are part of these systems are designed with powerful, but not unlimited, media error correction capacities. The integrity of data stored on optical disks does not only depend on the life expectancy specifications for the medium. Different factors, including handling and storage conditions, may...
Topics: NASA Technical Reports Server (NTRS), DATA STORAGE, ERROR CORRECTING CODES, OPTICAL DISKS, OPTICAL...
From the bitsavers.org collection, a scanned-in computer-related document. basicFour :: LD2002 Disk Storage Unit Controller Logic Diagrams Nov74
Topics: data, bit, phase, address, memory, internal, select, sequence, clock, memory data, internal bit,...
From the bitsavers.org collection, a scanned-in computer-related document. interdata :: 16bit :: 7-16 :: 29-402R17 7-16HSALU Maint Dec77
Topics: memory, data, address, illegal, processor, oooooo, operand, instruction, input, illegal illegal,...
From the bitsavers.org collection, a scanned-in computer-related document. perq :: PERQ CPU Tech Ref
Topics: signal, ffff, output, microcode, control, alu, outputs, described, input, ffff ffff, raster...
From the bitsavers.org collection, a scanned-in computer-related document. ti :: TVP4010 :: TVP4010 3D Graphics Processor Data Manual Jan97
Topics: memory, data, pci, address, vga, bits, interrupt, description, timing, memory data, description...
From the bitsavers.org collection, a scanned-in computer-related document. basicFour :: TM2002 Disk Storage Unit Controller Tech Man Nov74
Topics: data, disc, dma, address, controller, phase, write, memory, byte, disc drive, storage unit, unit...
From the bitsavers.org collection, a scanned-in computer-related document. interdata :: 16bit :: 7-16 :: 29-364R02 7-16Maint Jun74
Topics: memory, interdata, data, processor, supplied, display, address, selch, hexadecimal, supplied...
The DIGIMEM phase of the Optical Mass Memory Investigation Program addressed problems related to the analysis, design, and implementation of a direct digital optical recorder/reproducer. Effort was placed on developing an operational archival mass storage system to support one or more key NASA missions. The primary activity of the DIGIMEM program phase was the design, fabrication, and test and evaluation of a breadboard digital optical recorder/reproducer. Starting with technology and subsystem...
Topics: NASA Technical Reports Server (NTRS), COMPUTER STORAGE DEVICES, DIGITAL SYSTEMS, OPTICAL DATA...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: 1000 :: Diagnostics :: 12622-90008 Jul-1975
Topics: diagnostic, tns, data, sync, incorrect, fctst, code, configurator, display, sync incorrect, switch...
From the bitsavers.org collection, a scanned-in computer-related document. univOfIllinoisUrbana :: illiac :: ILLIAC IV :: ILLIAC IV System Study Progress Report No 2 Oct66
Topics: aaaa, memory, data, mode, control, bits, array, quadrant, unit, aaaa aaaa, control unit, memory...
From the bitsavers.org collection, a scanned-in computer-related document. nd :: ND812 :: ND812 MaintMan
Topics: memory, instruction, logic, data, content, signal, address, multiplexer, table, memory field,...
From the bitsavers.org collection, a scanned-in computer-related document. perq :: pos G5 :: PERQ uProgRefMan Mar84
Topics: amux, bmux, alu, instruction, address, condition, january, phrases, nia, phrases january, special...
From the bitsavers.org collection, a scanned-in computer-related document. qantel :: M-4936 Q64cpu Oct84
Topics: address, data, memory, alu, output, byte, input, cpu, fetcher, logical address, address register,...
From the bitsavers.org collection, a scanned-in computer-related document. interdata :: 32bit :: 3230 :: 47-004R21 3230 Maint 1982
Topics: data, memory, address, equ, error, processor, mnemonic, bits, instruction, computer systems, error...
From the bitsavers.org collection, a scanned-in computer-related document. microdata :: 1600 :: 1600 Logic Diagrams 1972
Topics: bit, data, memory, bus, board, ros, address, panel, clock, reg bit, data bit, bus bit, address bit,...
From the bitsavers.org collection, a scanned-in computer-related document. codata :: 05-0004-01 Codata 68000 Central Processing Unit Hardware Reference Manual Rev A Jan82
Topics: memory, data, timer, bus, address, uart, ram, cpu, figure, random access, signal ground, central...
From the bitsavers.org collection, a scanned-in computer-related document. national :: imp :: 4200021C IMP16C App Jan74
Topics: data, contents, memory, interrupt, flag, instruction, control, address, jmp, control panel, control...
