Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Advanced Search > forward

forward What is forward error correction? Search results

What is forward error correction?
In telecommunication and information theory, forward error correction (FEC) is a system of error control for data transmission, whereby the sender adds redundant data, known as an error-correction code (ECC), to its messages. 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."
total search3532 articles
2006-07-11 Winbond announces June revenue, looks forward to Q3
Winbond Electronics Corp., a supplier of IC product solutions, announced its revenue results for the month of June 2006.
2003-09-08 Vishay rectifiers offer low forward voltage drop
A series of 150V high-barrier-height Schottky rectifiers offering a low forward voltage drop and leakage current under high-temperature operating conditions was released by Vishay Intertechnology Inc.
2008-05-14 VeriSilicon signs up with Power Forward Initiative
VeriSilicon has joined the Power Forward Initiative and plans to offer a CPF-based design solution for its ASIC customers.
2003-01-16 Using the Newton Forward interpolation
This article discusses how to utilize the Newton Forward interpolation, which is useful for software engineers working on DSPs.
2007-04-20 UMC joins Power Forward Initiative
Semiconductor foundry UMC is the newest member of the Power Forward Initiative, an alliance of over 20 companies that aims to advance the adoption of the Common Power Format standard for low power design.
2009-11-16 TVS offers 200A forward surge current
The new transient voltage suppressor from Vishay Intertechnology offers a 27 percent smaller footprint than SMC devices.
2003-03-25 STMicro IGBT boasts low forward-voltage drops
STMicroelecronics has introduced a 200A version of its PowerMESH IGBT family, which features low forward-voltage drops at high currents.
2002-06-12 Standards inch forward with skeptics in tow
Two standards efforts will take major steps forward at the 39th Design Automation Conference, as the OpenAccess Coalition announces four additional EDA vendor members and much of the EDA community lines up behind Accellera's new SystemVerilog standard.
2010-12-15 Standards for hybrid homes step forward
Several companies are working on a draft standard to help unify fragmented wireless and wired home networks, including Atheros, Broadcom, Cisco Systems, Intel, Marvell, Toshiba and others.
2005-10-14 Spansion to bring forward 65-nm manufacturing
Spansion LLC, a joint venture between Advanced Micro Devices Inc. and Fujitsu Ltd., is planning to bring forward the introduction of flash memory chips made using 65-nanometer manufacturing processes from 2007 to 2006, according to an executive.
2011-04-04 Schottky diodes boast low forward voltage
ROHM Semiconductor introduces the SC1xxAGC series of silicon carbide (SiC) Schottky barrier diodes that are designed to improve power conversion efficiency.
2013-01-31 SanDisk leans on Flash Forward for 1Y nm flash products
SanDisk's transition to 1Y nm generation semiconductors means that Flash Forward Ltd will be making the most miniaturized commercial integrated circuits in the history of the semiconductor industry.
2001-05-30 Running ECO forward annotation from the command line
This application note describes the steps to follow to run ECO (Engineering Change Orders) forward from the command line.
2009-04-17 Rectifiers boast ultralow forward voltage drops
Vishay Intertechnology Inc. has released two new Schottky rectifiers with ultralow forward voltage drops of 0.35 V at + 85C and 0.4 V at + 25C.
2011-01-11 Qualcomm pushes forward in chips, displays, power
The fabless chip vendor has announced several developments for 2011, including deals with Taiwan's Ministry of Economic Affairs, Verizon Wireless, Duracell and Powermat.
2001-05-01 Programmable system chips move forward
Using dedicated hardware to boost real-time performance of embedded systems is a common practice and, with the introduction of PSCs, software engineers will learn how to boost performance of timing-critical software functions.
2014-05-15 Power supply standards: Which way forward?
Test-systems based on 380V DC have been running for many years now in applications across the globe. They have confirmed savings in both energy consumption and cost.
2006-07-25 Power Forward Initiative invites EDA companies
The Power Forward Initiative announced its plan to invite a limited number of EDA companies to participate in the Initiative.
2008-05-05 Power Forward Initiative gets MindTree onboard
MindTree has joined the Power Forward Initiative and will be offering a Common Power Format-enabled low-power flow to its design services customers.
2004-02-18 Oncque switches feature 1.2V forward voltage
The RBS3105 roll ball switches from Oncque are housed in high insulation plastic material that are free from electric conduction and rusting.
2002-01-07 ON Semiconductor Schottky rectifiers boast 10V forward voltage
Manufactured on what is claimed to be the industry's lowest voltage Schottky technology, the company's six 10V Schottky power rectifiers are all low forward-voltage devices in surface-mount packaging.
2008-06-04 Nanotube fab looks forward to multiple chip apps
The first foundry offering carbon nanotube thin films to fabless chipmakers will soon be available, whose thin films will be on variety of substrates like displays, touchscreens, solar cells, sensors and MEMS devices.
2007-12-17 Moving forward with hardware emulation
Sun Microsystems shares the experience of using latest generation hardware-based verification systems to develop its recently launched Ultrasparc T2 processor.
2007-12-19 Monolithic two-switch forward DC/DC regulator rolls
National Semiconductor has introduced the industry's first high-voltage, monolithic two-switch forward DC/DC regulator for power supply designs.
2008-04-24 Microfluidic lab-on-chip technology steps forward
Algorithms developed by a range of research groups aim to automate microfluidic lab-on-chip technologies that perform chemical identification and medical tests by shuffling nanoliters of samples and reagents around micron-sized channels.
2015-03-16 Light sensor market looks forward to bright future
As a result of the expansive market held by cellphones and tablets, revenue of the light sensor segment will reach $767 million in 2016, a 16 per cent rise in three years (2013-2016), noted IHS.
2002-06-20 Kodak pushes OLEDs forward via licensing pact, design kit
Continuing to make inroads with technology it pioneered in the 1980s, Eastman Kodak Co. has licensed its passive-matrix OLED technology to Optrex Corp. for use in displays, following the recent release of a design kit for active-matrix OLED display manufacturers.
2003-05-14 IR Schottky diodes offer low forward voltage
International Rectifier has introduced new 15V and 20V Schottky diodes for server and telecom power systems.
2003-07-08 IR diodes reduce forward voltage drop by 50 percent
International Rectifier has introduced the ETX and ETL series of high efficiency diodes for active PFC in SMPS apps.
2015-01-21 IoT, sensor synergy key to driving the market forward
A group established to drive IoT development is setting its eyes on the fusion of both MEMS and non-MEMS sensors to add more functionality to IoT devices and wearables.
Bloggers Say

Bloggers Say

See what engineers like you are posting on our pages.

Back to Top