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Time Triple Modular Redundancy
Time triple modular redundancy, also known as TTMR, is a patented single-event upset mitigation technique that detects and corrects errors in a computer or microprocessor. TTMR allows the use of very long instruction word ( VLIW) style microprocessors in space or other applications where external sources, such as radiation, would cause an elevated rate of errors. TTMR permits triple modular redundancy ( TMR) protection in a single processor. Space Micro Inc developed and patented TTMR. It has been implemented in Space Micro's space qualified single-board computers, such as the Proton200k The Proton200k is a high-speed, space-qualified, radiation-hardened single-board computer based on a Texas Instruments 320C 6415/6713 DSP. The Proton200k is produced by Space Micro Inc, a designer and manufacturer of radiation hardened electro .... External links TTMR Patent {{DEFAULTSORT:Time Triple Modular Redundancy Error detection and correction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patented
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private law and the patent holder mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-event Upset
A single-event upset (SEU), also known as a single-event error (SEE), is a change of state caused by one single ionizing particle (ions, electrons, photons...) striking a sensitive node in a live micro-electronic device, such as in a microprocessor, semiconductor memory, or power transistors. The state change is a result of the free charge created by ionization in or close to an important node of a logic element (e.g. memory "bit"). The error in device output or operation caused as a result of the strike is called an SEU or a soft error. The SEU itself is not considered permanently damaging to the transistor's or circuits' functionality unlike the case of single-event latch-up (SEL), single-event gate rupture (SEGR), or single-event burnout (SEB). These are all examples of a general class of radiation effects in electronic devices called ''single-event effects'' (SEEs). History Single-event upsets were first described during above-ground nuclear testing, from 1954 to 1957, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Very Long Instruction Word
Very long instruction word (VLIW) refers to instruction set architectures designed to exploit instruction level parallelism (ILP). Whereas conventional central processing units (CPU, processor) mostly allow programs to specify instructions to execute in sequence only, a VLIW processor allows programs to explicitly specify instructions to execute in parallel. This design is intended to allow higher performance without the complexity inherent in some other designs. Overview The traditional means to improve performance in processors include dividing instructions into substeps so the instructions can be executed partly at the same time (termed ''pipelining''), dispatching individual instructions to be executed independently, in different parts of the processor (''superscalar architectures''), and even executing instructions in an order different from the program (''out-of-order execution''). These methods all complicate hardware (larger circuits, higher cost and energy use) because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VLIW
Very long instruction word (VLIW) refers to instruction set architectures designed to exploit instruction level parallelism (ILP). Whereas conventional central processing units (CPU, processor) mostly allow programs to specify instructions to execute in sequence only, a VLIW processor allows programs to explicitly specify instructions to execute in parallel. This design is intended to allow higher performance without the complexity inherent in some other designs. Overview The traditional means to improve performance in processors include dividing instructions into substeps so the instructions can be executed partly at the same time (termed ''pipelining''), dispatching individual instructions to be executed independently, in different parts of the processor (''superscalar architectures''), and even executing instructions in an order different from the program (''out-of-order execution''). These methods all complicate hardware (larger circuits, higher cost and energy use) because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triple Modular Redundancy
Triple is used in several contexts to mean "threefold" or a " treble": Sports * Triple (baseball), a three-base hit * A basketball three-point field goal * A figure skating jump with three rotations * In bowling terms, three strikes in a row * In cycling, a crankset with three chainrings Places * Triple Islands, an uninhabited island group in Nunavut, Canada * Triple Island, British Columbia, Canada * Triple Falls (other), four waterfalls in the United States & Canada * Triple Glaciers, in Grand Teton National Park, Wyoming * Triple Crossing, Richmond, Virginia, believed to be the only place in North America where three Class I railroads cross * Triple Bridge, a stone arch bridge in Ljubljana, Slovenia Transportation * Kawasaki triple, a Japanese motorcycle produced between 1969 and 1980 * Triumph Triple, a motorcycle engine from Triumph Motorcycles Ltd * A straight-three engine * A semi-truck with three trailers Science and technology * Triple (mathematics) (3-t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Micro Inc
Space Micro Inc is an American company that designs and manufactures high-reliability space and satellite subsystems. Space Micro focuses on radiation-hardened Single Board Computers, Image Processing Computers, Software Defined Radios, Radio Frequency Transceivers and Transponders, Optical Terminals, Space Cameras, Star Trackers and Sun Sensors. Space Micro leverages commercial technologies, and modifies these to meet defense, scientific and commercial space requirements. History Space Micro was founded in 2002 by David J. Strobel and David Czajkowski as their second entrepreneurial venture following the successful sale of their first company, Space Electronics, Inc., to Maxwell Technologies in 1999. Since 2002, the company has designed, manufactured and launched hundreds of subsystems into space, accumulating millions of hours of space flight heritage. Subsystems have flown on spacecraft for NASA (LADEE, IRIS, TESS), JPL, Department of Defense, aerospace primes (Lockhee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-board Computer
A single-board computer (SBC) is a complete computer built on a single circuit board, with microprocessor(s), memory, input/output (I/O) and other features required of a functional computer. Single-board computers are commonly made as demonstration or development systems, for educational systems, or for use as embedded computer controllers. Many types of home computers or portable computers integrate all their functions onto a single printed circuit board. Unlike a desktop personal computer, single board computers often do not rely on expansion slots for peripheral functions or expansion. Single board computers have been built using a wide range of microprocessors. Simple designs, such as those built by computer hobbyists, often use static RAM and low-cost 32- or 64-bit processors like ARM. Other types, such as blade servers, would perform similar to a server computer, only in a more compact format. A computer-on-module is a type of single-board computer made to plug into a ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proton200k
The Proton200k is a high-speed, space-qualified, radiation-hardened single-board computer based on a Texas Instruments 320C 6415/6713 DSP. The Proton200k is produced by Space Micro Inc, a designer and manufacturer of radiation hardened electronics for space applications. The Proton200k was originally developed under Phase I and Phase II SBIR contracts. The Proton200k displays processing speeds of 900 MFLOPS or 4000 MIPS while operating at 5 watts. It is radiation hardened to a total ionizing dose greater than 100 krad(Si) and fewer than 1 single event upset per 1000 days. Space Micro Inc also offers a triple-core version of the Proton200k. In 2006, the Proton200k space computer was selected for Air Force Research Laboratory's (AFRL) Autonomous Nanosatellite Guardian Evaluating Local Space (ANGELS) satellite program. Enabling technologies originally developed for the Proton200k led to the development of Space Micro's Proton400k PowerPC-based single-board computer A sin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
