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What is ECC?
Error-correction code (ECC) is redundant data that a sender adds to its messages in a system of error control for data transmission called forward error correction (FEC). This allows the receiver to detect and correct errors (with some limitations) without asking the sender for additional data. The advantages of FEC are that a back-channel is not required and retransmission of data can often be avoided though this is achieved at the cost of higher bandwidth requirements. FEC is therefore applied where retransmissions are relatively costly or impossible. In particular, FEC information is usually added to most mass storage devices to protect against damage to the stored data.
For instance, electrical or magnetic interference inside a computer system can cause a single bit of DRAM to flip to the opposite state. This problem can be mitigated by using DRAM modules that include extra (redundant) memory bits and memory controllers that exploit these bits. These extra bits are used to record parity or to use an ECC. Parity allows the detection of an odd number of wrong bits. The ECC may allow a single-bit error to be corrected and double-bit errors to be detected.
Error detection and correction in computer systems keeps going in and out of vogue. Seymour Cray famously said "parity is for farmers" to explain why he left it out of the CDC 6600. He included parity in the CDC 7600, and reputedly said "I learned that a lot of farmers buy computers."
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2010-01-26 Vector, TTTech tie-up for ECU software
Vector and TTTech Automotive have forged a partnership for the development and sales of standard software modules for car electronic control units (ECUs).
2014-07-02 Vector CDM Studio allows ECU calibration data editing
Vector's latest CDM Studio supports all commonly used data formats such as ASAM CDF 2.0, DCM, Intel Hex, Motorola-S, PAR and PaCo.
2015-11-25 Tracking down ECU disturbances from EMI
In this article, we examine how to use oscilloscopes to detect ECU disturbances from electromagnetic interference.
2005-09-01 The changing face of automotive ECU design
Designers are moving away from MCUs and microprocessors and into programmable logic devices.
2009-03-02 Software tool accelerates ECU efficiency
TTTech Automotive (Vienna) has announced a software tool to validate the consistency of Autosar components in electronic control units (ECUs). TTX-Autoverify increases the engineering efficiency during system integration, thus helping shorten time-to-market and costs.
2007-11-16 Simulate CAN bus comms in ECU nets
ECUs are often used in a network with other ECUs and communicate with each other by exchanging CAN bus messages. To verify the functionality of an ECU, it may be necessary to simulate these messages with CAN Onboard.
2002-11-07 Oki unveils ARM9-based automobile ECU
The company has unveiled the ML67Q2003 MCU, which is touted to be the industry's first ARM9 core family-based 32-bit ECU for the automotive market.
2005-08-17 NI toolkit eases ECU design
NI released the ECU Measurement and Calibration Toolkit that extends the company's LabVIEW, NI LabWindows/CVI and Microsoft C/C++ development environments to support measurement and calibration apps for ECU design and validation.
2013-07-24 EMC simulation addresses ECU validation issues
A more straightforward validation of electromagnetic compatibility can be achieved by combining tools.
2004-09-03 Ecu-Tamura telecom transformers operate to 20kHz
Ecu-Tamura has announced the release of its latest telecom transformers that operate within the 20Hz to 20kHz frequency range.
2003-05-16 ECU-Tamura choke coils exhibit low leakage current
The RS-0086 series of choke coils is claimed by Hefei ECU-Tamura Electric Co. Ltd to exhibit low leakage current and good EMI performance.
2003-03-03 ECU power supply operates at 80 percent efficiency
The DY-01-1 triple-output switching power supply of ECU Electronics Ind. Co Ltd operates at a typical full load efficiency of 80 percent.
2008-10-20 ECU and DSP function
This document describes the use of embedded computational units (ECUs) in QuickLogic FPGAs to implement DSP functions.
2001-08-28 Comparison between Embedded Computational Unit (ECU) and Look-Up Table (LUT) approach to building large multiplier
This application note explains the design advantages of the ECU (embedded computational unit) over the LUT (look-up table) based on a case study of building a 16-by-16 multiplier.
2009-06-04 Bosch opens ECU production facility in India
Bosch Automotive Electronics India Pte Ltd has recently inaugurated its manufacturing plant at Naganathapura, Bangalore, which will produce electronic control units (ECU) for diesel and gasoline fuel injection systems.
2011-03-28 Voltage regulator fits into compact LIN tranceiver
The TJA1028 LIN transceiver family released by NXP features integrated low-drop voltage regulator in a very small 3x3mm leadless package.
2015-04-14 Verifying ADAS in vehicles and in labs
Learn about the typical challenges that arise in verifying object data and testing the image processing algorithm. The XCP standard enables the necessary high data throughput in measurement and calibration.
2000-11-01 System-level design brings new challenges
Embedded standard products reduce the overall design load on the system design engineer and allow the creation of complex designs in the shortest possible time.
2009-11-13 System basis chips boost in-vehicle networks
The chips feature CAN and LIN transceivers and a scalable voltage regulator for the on-board MCU and peripherals.
2015-01-23 Streamline embedded designs with virtual platforms
The virtual prototype kits from Mentor are intended for automotive in-vehicle infotainment, ECU networks, medical and industrial, networking, and military and aerospace product development.
2002-05-08 Speed sensors
This application note describes two types of speed sensor offered by TAG Electronic Systems for automotive applications: inductive and differential Hall effect.
2009-03-06 Robust contact monitor simplifies design of body control computers
This application note demonstrates how the MAX13362 automotive switch monitor performs during ECU-level testing. The article describes the tests performed and the results obtained.
2004-07-13 Renesas expands 32-bit RISC MCU portfolio
Renesas announced the M32192 Group as an addition to its lineup of M32R/ECU series of 32-bit RISC MCUs for automotive driving safety support systems.
2016-02-05 Reference platform touts scalable connector for car Ethernet
Marvell introduced a 1000BASE-T1 development platform integrated with TE's MATEnet modular and scalable connector for automotive Ethernet.
2005-02-16 Reduce costs in automotive power systems
The proper design of a power supply can reduce the overall engineering cost. Here's how.
2006-07-31 New NI toolkit targets next-gen automotive ECUs
NI has released the ECU Measurement and Calibration Toolkit 2.0 that supports measurement and calibration applications for designing and validating automotive electronic control units (ECUs).
2015-07-31 Murata unveils water-repellent monolithic ceramic capacitor
The monolithic capacitor is treated with a water-repellent treatment film so that moisture forms into scattered, rather than larger, droplets.
2007-08-03 MathWorks aids Volkswagen in AUTOSAR demo
The MathWorks has announced that its products helped Volkswagen demonstrate how the AUTOSAR standard can be integrated into next-generation vehicle design and development.
2005-09-01 Keys to new car sensor
As electronic content in cars increases, low-cost, reliable sensing systems become even more important.
2006-01-17 IPD enables enable smaller, lighter ECUs
NEC announced an intelligent power device designed for on-board electronic control units supporting applications such as headlights, anti-lock braking systems and air conditioners.
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