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위키데이터
- ID : Q245471
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- Cyclic redundancy check (CRC) is a method of checking data for errors on both the hard disk and optical disks.[1]
- Sometimes, you can get cyclic redundancy check errors, for example, with problems with the registry, file system, or hard disk; or errors when installing any software or incorrectly configured files.[1]
- Unfortunately, if you are dealing with a cyclic redundancy check data error, this is quite serious, because your data may be damaged or even deleted.[1]
- Therefore, fix cyclic redundancy check errors as soon as possible.[1]
- A sending device applies a 16- or 32-bit polynomial to a block of data that is to be transmitted and appends the resulting cyclic redundancy code (CRC) to the block.[2]
- The ITU-TS (CCITT) has a standard for a 16-bit polynomial to be used to obtain the cyclic redundancy code (CRC) that is appended.[2]
- For larger transmissions, a 32-bit CRC is used.[2]
- This short article is not the place to explore the details of CRC computation and performance—and, furthermore, I’m not qualified to expound on that subject.[3]
- It is a 16th-order polynomial, which means that the corresponding binary number is 16 bits wide and that the resulting CRC checksum will be 16 bits wide.[3]
- The details of CRC-based error correction are beyond my intellectual comfort zone.[3]
- A cyclic redundancy check (CRC) is an Error detection and correction code commonly used in digital Telecommunications networks and storage devices to detect accidental changes to raw data.[4]
- CRCs are so called because the check (data verification) value is a redundancy (it expands the message without adding Entropy information) and the CRC algorithm is based on Cyclic codecyclic codes.[4]
- Specification of a CRC code requires definition of a so-called generator polynomial.[4]
- A CRC is called an n-bit CRC when its check value is n bits long.[4]
- A bit stream 10011101 is transmitted using the standard CRC method.[5]
- Simple checks (horizontal and/or vertical) are much less secure against burst errors than a nontrivial CRC with G of degree (typically) 16.[6]
- The term longitudinal redundancy check (LRC) usually refers to a nontrivial CRC, but may apply to a simple vertical check.[6]
- 6 illustrates an embodiment of a operations and functionality within a cyclic redundancy check (CRC) error correction (EC) decoder.[7]
- 10A illustrates an embodiment of an apparatus that is operative to perform error correction using cyclic redundancy check (CRC) and redundant bit streams.[7]
- 10B illustrates an embodiment of an apparatus that is operative to perform error correction using CRC and redundant bit streams.[7]
- 11 illustrates an embodiment of a method for performing error correction using CRC and redundant bit streams.[7]
- All Altera® Stratix series FPGAs compute the CRC during configuration and store it in registers.[8]
- Dedicated circuitry checks it against an automatically computed CRC.[8]
- With this option, the CRAM CRC detection/correction runs in the background and does not require any user design or external components.[8]
- The most widely used CRC calculations are done in a manner such that anticipated types of errors (such as transmission channel noise) are usually detected.[9]
- The important operation used to calculate a CRC is binary division, with the remainder from the division operation determining the CRC.[9]
- In fact, CRC types are often identified by a polynomial—the number used as the divisor, displayed in hexadecimal format.[9]
- A CRC is used to flag corrupt data and prevent it from being sent over the bus.[10]
- With today’s protocols often supporting higher bandwidths and speeds, the CRC is fundamental to keeping data clean and reliable within an embedded system.[10]
- How does the CRC get generated and how does it work?[10]
- Essentially, the CRC is a value calculated from a number of data bytes to form a unique polynomial key which is appended to the outgoing message.[10]
- Cyclic Redundancy Check (CRC) is a block code invented by W. Wesley Peterson in 1961.[11]
- CRC involves binary division of the data bits being sent by a predetermined divisor agreed upon by the communicating system.[11]
- The communicating parties agrees upon the size of message block and the CRC divisor.[11]
- For example, the block chosen may be CRC (7, 4), where 7 is the total length of the block and 4 is the number of bits in the data segment.[11]
- The Cyclic Redundancy Check (CRC) is an efficient technique for detecting errors during digital data transmissions between a source and a destination.[12]
- The destination device calculates the CRC of the received data.[12]
- If the CRC calculated by the destination device does not match the one calculated by the source device, then the received data contains an error.[12]
- The CRC is based on polynomial manipulations which treat each received message as a binary number.[12]
- A Cyclic Redundancy Check (CRC) is a mathematical calculation on a frame or cell that is used for error detection.[13]
- The Cyclic Redundancy Check (CRC) validation verifies the integrity of the data secured by the backup operations and transferred over a network, and the data stored on the media.[14]
- - Scratches and dust on a disc can cause CRC error.[15]
- CRC errors occur when your computer detects a discrepancy while verifying data.[15]
- To compute the CRC, we begin by taking the value of D, 10011001, and multiplying it by 2^3, giving 10011001000.[16]
- In Classical CAN, a 15-bit CRC polynomial is used (x15 + x14 + x10 + x8 + x7 +x4 +x3 + x0).[17]
- Fixed stuff-bits and stuff-bit counter To improve the error detection capability, the CAN FD protocol has introduced fixed stuff-bits in the CRC field.[17]
- The 21-bit CRC is specified for data frames with a length of larger than 16 byte.[17]
- It is a powerful method for detecting errors in the received data is by grouping the bytes of data into a block and calculating a Cyclic Redundancy Check (CRC).[18]
- The hardware solution for implementing a CRC is much simpler than a software approach.[18]
- The CRC register is first set to zero (or the initial value on transmission, if non-zero).[18]
- The bits (this time including the CRC) are fed into the register on each clock cycle.[18]
- CRC uses Generator Polynomial which is available on both sender and receiver side.[19]
- In CRC mode, the qik expects an extra byte to be added onto the end of every command packet.[20]
- The lower seven bits of this byte must be the 7-bit CRC for that packet, or else the qik will set its CRC Error bit in the error byte and ignore the command.[20]
- The CRC implemented on the qik is the same as on the jrk motor controller but differs from that on the TReX motor controller.[20]
- There are some tricks you can use in your programs to make the CRC calculation much faster.[20]
- From time to time, I’ve had to implement various CRC calculations for customers for different data communications systems.[21]
- CRC stands for Cyclic Redundancy Check.[21]
- A CRC can detect not just bit corruption, but also bit order corruption.[21]
- I stated it should be obvious that some CRC polynomials are better than others.[21]
- Definition - What does Cyclic Redundancy Check (CRC) mean?[22]
- Checksum and CRC are schemes for detecting the errors of data which occur during transmission or storage.[23]
- Cyclic redundancy check mechanism exploits mathematical properties of cyclic codes.[23]
- Specifically, CRC uses polynomial devisor circuits with a given generator polynomial so as to obtain the remainder polynomial.[23]
- CRC can be used as a kind of checksum.[23]
- An alternative, cyclic redundancy checking (CRC), is to send a checksum with each packet of data.[24]
- Many Analog Devices DACs implement CRC in the form of a packet error check (PEC).[24]
- The CRC polynomial is aligned so that its MSB is adjacent to the leftmost Logic 1 of the 32-bit data.[24]
- The CRC polynomial is again aligned so that its MSB is adjacent to the leftmost Logic 1 of the first result, and the procedure is repeated.[24]
- " With the cyclic redundancy check error, you can neither access files nor the storage device on your computer.[25]
- The CRC error is an error-detecting technology used in digital networks and storage devices to detect accidental changes to raw data.[25]
- Thus, it's necessary and urgent to fix the CRC error.[25]
- If your device still has CRC device error, the last effective DIY method you can try is to format the drive, resetting the file system to a readable format.[25]
- The CRC is calculated over the entire transport block that is constructed from the MAC PDU(s).[26]
- N P U S C H + N C R C is larger than the maximum code block size K c b , the bit sequence is segmented, and a 24-bit CRC is attached to each (segmented) code block.[26]
- A cyclic redundancy check (CRC) is a data verification method your computer uses to check the data on your disks (hard disks like your hard drive and optical disks like CDs and DVDs).[27]
- A cyclic redundancy check error can be caused by several different issues: registry corruption, a cluttered hard disk, an unsuccessful program installation, or misconfigured files.[27]
- Regardless of the specific cause, the cyclic redundancy check error is a serious one and must be addressed to avoid potential data loss or even a total system failure system.[27]
- A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.[28]
- This is first padded with zeros corresponding to the bit length n of the CRC.[28]
- The following Python code outlines a function which will return the initial CRC remainder for a chosen input and polynomial, with either 1 or 0 as the initial padding.[28]
- """Calculate the CRC remainder of a string of bits using a chosen polynomial.[28]
소스
- ↑ 1.0 1.1 1.2 1.3 Cyclic Redundancy Check Data Error - All Methods to Solve It!
- ↑ 2.0 2.1 2.2 What is cyclic redundancy checking?
- ↑ 3.0 3.1 3.2 The Cyclic Redundancy Check (CRC): Finding—and Even Correcting—Errors in Digital Data
- ↑ 4.0 4.1 4.2 4.3 Cyclic redundancy check (CRC)
- ↑ Cyclic Redundancy Check
- ↑ 6.0 6.1 cyclic redundancy check
- ↑ 7.0 7.1 7.2 7.3 US8522121B2 - Low complexity error correction using cyclic redundancy check (CRC) - Google Patents
- ↑ 8.0 8.1 8.2 Stratix: Cyclic Redundancy Check (CRC)
- ↑ 9.0 9.1 9.2 3 Definitions of Cyclic-redundancy-check - YourDictionary
- ↑ 10.0 10.1 10.2 10.3 What is a CRC (Cyclic Redundancy Check)?
- ↑ 11.0 11.1 11.2 11.3 Error-Detecting Codes - Cyclic Redundancy Checks (CRCs)
- ↑ 12.0 12.1 12.2 12.3 Cyclic Redundancy Check
- ↑ What is Cyclic Redundancy Check (CRC)?
- ↑ Cyclic Redundancy Check (CRC) Validation
- ↑ 15.0 15.1 Cyclic Redundancy Check Error
- ↑ Interactive Problems, Computer Networking: A Top Down Approach
- ↑ 17.0 17.1 17.2 CAN in Automation (CiA): Cyclic redundancy check (CRC) in CAN frames
- ↑ 18.0 18.1 18.2 18.3 Untitled Document
- ↑ Cyclic Redundancy Check and Modulo-2 Division
- ↑ 20.0 20.1 20.2 20.3 6. Cyclic Redundancy Check (CRC) Error Detection
- ↑ 21.0 21.1 21.2 21.3 Understanding the Cyclic Redundancy Check
- ↑ What is Cyclic Redundancy Check (CRC)?
- ↑ 23.0 23.1 23.2 23.3 Checksum and Cyclic Redundancy Check Mechanism
- ↑ 24.0 24.1 24.2 24.3 Cyclic Redundancy Checking Ensures Correct Data Communications
- ↑ 25.0 25.1 25.2 25.3 Fix Data Error Cyclic Redundancy Check in 2021
- ↑ 26.0 26.1 Cyclic Redundancy Check - an overview
- ↑ 27.0 27.1 27.2 How to Fix a Cyclic Redundancy Check Error
- ↑ 28.0 28.1 28.2 28.3 Cyclic redundancy check
메타데이터
위키데이터
- ID : Q245471
Spacy 패턴 목록
- [{'LOWER': 'cyclic'}, {'LOWER': 'redundancy'}, {'LEMMA': 'check'}]
- [{'LEMMA': 'CRC'}]
- [{'LEMMA': 'CRC8'}]
- [{'LEMMA': 'CRC32'}]
- [{'LOWER': 'cyclic'}, {'LOWER': 'redundancy'}, {'LOWER': 'check'}, {'OP': '*'}, {'LEMMA': 'CRC'}]
- [{'LOWER': 'cyclical'}, {'LOWER': 'redundancy'}, {'LEMMA': 'check'}]