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Topic: CRC method

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	4.6 Elementary Method "Class Responsibility Collaboration" (CRC) (Site not responding. Last check: 2007-10-23)
		It is the objective of the CRC method to detect, check and update the tasks or respectively responsibilities of classes and their collaborations with other classes on a conceptional level.
		During the methodical check or during the detection of the class responsibilities with the help of a CRC method it is also possible to identify such tasks that are to be processed in collaboration with other classes that possibly have to be specially created.
		When applying the CRC method, class candidates have to be defined first, together with a first specification of the corresponding responsibilities and the actions to be executed by the objects of this class.
	www.informatik.uni-bremen.de /uniform/gdpa_d/methods/m-crc.htm (525 words)

	Home
		The CRC (Cyclic Redundancy Check) is a sophisticated checksum that has long been the most common means of testing data for correctness.
		A CRC doesn't identify which byte is in error, but it pretty much guarantees that you'll be alerted to at least single bit errors.
		This function computes the CRC if it has 32 bits input data, but in the real Ethernet case it may have at the end of the frame only 8, 16 or 24 valid bits (meaning 1, 2 or 3 valid bytes).
	www.nobugconsulting.com /crc_details.htm (1099 words)

	CRC-based framing - Wikipedia, the free encyclopedia
		The method of CRC-Based framing re-uses the header cyclic redundancy check (CRC), which is present in ATM and other similar protocols, to provide framing on the link with no additional overhead.
		The IPX used 24 byte cells instead of ATM's 53 byte cells, and the field definitions were slightly different, but the basic idea of using short, fixed length cells was identical.
		A circuit was designed which examined the incoming byte stream emerging from the E1 framer device and found a byte position for which the header CRC value was consistently correct.
	en.wikipedia.org /wiki/CRC-Based_Framing (821 words)

	Understanding and Using Cyclic Redundancy Checks with Dallas Semiconductor iButton Products - Maxim/Dallas
		The host compares the CRC value that was computed for the data bytes to the value stored in memory as the CRC for that data.
		Alternatively, the CRC is sometimes referred to as a polynomial expression in a dummy variable X, with binary coefficients for each of the terms.
		If the CRC value which has been calculated (A2 Hex in this example) is now used as input to the shift register for the next 8 bits of data, the final result in the shift register after the entire 64 bits of data have been entered should be all 0s.
	www.maxim-ic.com /appnotes.cfm/appnote_number/27 (3948 words)

	On-line CRC calculation and free library
		Dividing in the CRC calculation at first looks to cost a lot of computing power, but it can be performed very quickly if we use a method similar to the one learned at school.
		Please refer to your schoolbooks as the binary calculation method here is not very different from the decimal method you learned when you were young.
		A common used test is to calculate the CRC value for the ASCII string "123456789".
	www.lammertbies.nl /comm/info/crc-calculation.html (1970 words)

	colorectal cancer
		CRC is the number two cancer killer in the U.S. of men and women, second only to lung cancer.
		The five-year survival rate from CRC is about 90% when the disease is detected early, compared to only 8% when it is detected in a late stage.
		CRC management depends primarily on surgical removal of a portion of the bowel where the tumor is found.
	www.beckman.com /products/applications/diseasemgmt/colorectalca.asp (884 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		CRC sessions are use to determine the system behaviour by constructing a number of plausible scenarios involving the system, its components, and the system users, i.e.
		CRC cards identify all kinds of object's responsibilities, some of which aim at the object's external behaviour, such as to perform an "action" of benefit to the client object, others aim at the maintenance of the object's internal state, i.e.
		The second, probably even more popular, method is to record the collaborating objects in a table of four columns, which identifty the client and server objects, the requested method and some additional comments (which lists the specific data that may be passed between objects).
	users.bigpond.net.au /heathmont/optimis/pub/faq (2038 words)

	Catabolite repression control (Crc) gene and Pseudomonas virulence - Patent 6824979
		The method according to claim 1, wherein said step of detecting the poisoning of said bacteria is carried out by detecting cell death or inhibition of cell growth.
		The method is a general one and involves the integration of (1) methods for selecting the correct oligonucleotide, (2) synthesis and purification of nuclease resistant oligonucleotides, and (3) methods for in vitro analysis of potential antimicrobial oligonucleotides.
		The method comprises the steps of: providing a culture medium comprising Pseudomonas bacteria; administering a test compound to said bacteria; and then detecting the presence or absence of inhibition of the catabolite repression control (Crc) protein in said bacteria, the inhibition of the Crc protein indicating said compound has antivirulence activity against Pseudomonas bacteria.
	www.freepatentsonline.com /6824979.html (4610 words)

	Technical report - CRC64 Algorithm Analysis and Verification
		CRC is used for unique flow identification and also for determining the address in the memory, where the additional flow information is stored.
		The CRC is defined as a sequence of coefficients appearing in the remainder polynomial.
		CRC with more than one nonzero coefficients is able to detect all single bit errors in the input message.
	www.cesnet.cz /doc/techzpravy/2005/crc64 (1866 words)

	Untitled Document (Site not responding. Last check: 2007-10-23)
		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).
		The CRC is calculated by performing a modulo 2 division of the data by a generator polynomial and recording the remainder after division.
		A practical implementation of a decoder also requires a method to initialise the encoder prior to transmission of the first bit of data in a frame, and to flush the encoder after sending the last byte.
	www.erg.abdn.ac.uk /users/gorry/course/dl-pages/crc.html (469 words)

	Colorectal Cancer Screening
		There were 1002 cases and 320 deaths from CRC with a cumulative annual mortality rate from CRC of 5.88 per 1000 in the annually screened group compared with 8.33 in the biennially screened group and 8.83 in the control group.
		The relative risk of death from CRC in the annually screened group was 0.67 (95% CI, 0.50 to 0.87) and 0.94 (95% CI, 0.68-1.31) in the biennially screened group relative to the control group.
		CRC screening represents a large lifetime investment, but the returns on this investment are felt to be in high in terms of years of life saved (1).
	intmedweb.wfubmc.edu /grand_rounds/1998/colorectal_cancer_screening.html (7628 words)

	efg's Mathematics Projects -- CRC Calculator
		CRC values, especially the CRC-32, are an extremely good way to verify the integrity of a file.
		Instead of computing the CRC bit-by-bit, a 256-element lookup table can be used to perform the equivalent of 8 bit operations at a time.
		CRC values, especially the CRC-32, are an extremely good way to verify the integrity of a string or even a file.
	www.efg2.com /Lab/Mathematics/CRC.htm (1787 words)

	CRC Card Book, The - $24.47 (Site not responding. Last check: 2007-10-23)
		The solution is to use the CRC process to determine the classes necessary to the system as part of the design process for the application.
		CRC (classes, responsibility, and collaboration) cards can be used to visualize and test different class-based models during the design phase.
		Following the examination of role playing in the CRC method, we discuss the overall demands of managing an object-oriented project, along with suggestions as to useful metrics for monitoring the process, and for including legacy software in OO systems.
	www.awprofessional.com /title/0201895358 (1438 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		The checksum method is clearly faster, but cannot catch communication errors as effectively.
		The CRC method has an upper end throughput of 500 bytes per second.
		However, it is clear that the table lookup algorithm stays closer to the checksum method than the standard bit shift algorithm.
	www.df.lth.se /~pi/compis/files/ftp.mayn.de/pub/cpm/archive/modem/crc.not.txt (686 words)

	Monkeybread Realbasic plugin - Documentation - CRC
		There are three versions of CRC calculation: One for 16 Bit, one for 32 Bit and one for 16 to 64 Bit wide checksums.
		Checksums, such as CRCs, are used to quickly verify that a chunk of data has not been modified somehow without your control.
		Unless you need that CRC for legacy data, I recomment not to use it, but rather use the CRC_32 version.
	www.monkeybreadsoftware.de /pluginhelp/crc-crc.shtml (1446 words)

	SCI0009
		Although more resilient to multi-bit errors, the checksum method is defeated if the value of one byte is increased while a second byte is decreased by the same amount.
		Since the bits are indistinguishable among bytes in the checksum method, a technique was devised that preserves the uniqueness of each individual bit.
		In this method, if one bit is flipped, it is difficult for the flip of a second bit in the packet to compensate for the error.
	www.lasalle.edu /~weaver/html/sci0009.html (896 words)

	EAC C2 error correction - Hydrogenaudio Forums
		This CRC method only works for tracks with errors detected, and all corrected, that is very uncommon.
		The DAE testing method looks interesting, but I would prefer it if there was already some info on this drive, after all, it was pretty popular not too long ago.
		And considering in 99.9% of the tracks the CRCs of "C2 on" and "C2 off" coincide and "C2 on" mode produced the same CRC with "C2 off" in the problematic tracks in some of the rips makes me think that the most accurate rip is attained with "No C2".
	www.hydrogenaudio.org /forums/index.php?act=ST&f=20&t=9905 (3632 words)

	Method of partitioning CRC calculation for a low-cost ATM adapter (US5951707)
		The partial CRCs (i.e., Ai's) are calculated by hardware generator and forwarded to a processor which selects the corresponding value of Ci from the table and generates the CRC for the frame.
		Method and apparatus of error detection for variable length words using a polynomial code
		CRC calculation machine for separate calculation of checkbits for the header packet and data packet
	www.delphion.com /details?patent_number=5951707 (342 words)

	CCS :: View topic - CRC
		Using this method I can calculate the FCS on the fly and when I include the received FCS I should have a zero value if the packet is good.
		CRC calculations but it was more than I could manage to solve in an elegant manner.
		crc is performed on is 10 bytes long, then the percent chance of detecting all possible errors in the 10 bytes is 0.9929^10 = appr.
	www.ccsinfo.com /forum/viewtopic.php?t=17170&highlight=crc (1966 words)

	Dallas Semiconductor 1-Wire API 1.00 Alpha: Class OneWireContainer12
		This method supports all the modes of communication with the part as described in the datasheet for the DS2406/2407.
		Depending on the other options chosen to this method, this will contain data to be written to the channels or it will hold space for data that will be read.
		The CRC is 16 bits, and does not get passed back with the output.
	web.mit.edu /6.121/www/javadoc/modules/owapi/com/dalsemi/onewire/container/OneWireContainer12.html (2383 words)

	XORSUM CRC Method (Site not responding. Last check: 2007-10-23)
		You best >approach would be to generate a CRC value for your hashing table >rather then the checksum approach.
		Or try this xorsum method (my own invention, have to plug for it...
		This xorsum algorithm is hereby standardized and if anyone wants to use it you should make sure your xorsum routines give the same results.
	www.csd.net /~cgadd/knowbase/CRC0012.HTM (129 words)

	Discovering Classes
		That is, you need to find out what methods each object needs to carry out to solve the programming problem.
		Many people find it helpful to group the cards on a table so that the collaborators are close to each other, and to simulate tasks by moving a token (such as a coin) from one card to the next to indicate which object is currently active.
		The CRC card method is informal on purpose, so that you can be creative and discover classes and their properties.
	www.cs.cmu.edu /~clo/www/CMU/Wiley/Contents/Big_Java/horstmann2486c16/sect2-meta.html (651 words)

	What is cyclic redundancy checking? - a definition from Whatis.com - see also: CRC
		Cyclic redundancy checking is a method of checking for errors in data that has been transmitted on a communications link.
		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.
		A less complicated but less capable error detection method is the checksum method.
	whatis.techtarget.com /definition/0,289893,sid9_gci213868,00.html (316 words)

	Index
		When a new packet arrives, this method is called to decide, whether to append packet to the current page or not.
		Proxy call to output, this method should not be called, as it writes directly into the ogg stream.
		This method causes a packet to be written to the ogg stream.
	netmind.hu /ogg/apidoc/index-all.html (713 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		You send CRC error to standard error which will be seen by all hosts.
		According to the spec, CRC should be applied to entire frame except preamble and SOF.
		The CRC check helps you to detect any errors occurring in rest of the frame.
	www.cs.mu.oz.au /353/Prog1Info (731 words)

	Cancer Genetics Network - Statistical Coordinating Center (Site not responding. Last check: 2007-10-23)
		Early detection and treatment of CRC and its precursor lesion, the adenomatous polyp, is currently the best available strategy for reducing CRC mortality.
		For families at increased risk for CRC, both HNPCC and non-HNPCC families, colonoscopy is recommended as the CRC screening method of choice.
		Survey data indicates that CRC screening rates in the U.S. are substantially lower than for other cancers for which screening is recommended (JAMA, 2001).
	hedwig.mgh.harvard.edu /cgn/public/studies/colon_screening.php (475 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		This * default will be used whenever the compression method is not specified * for an individual ZIP file entry, and is initially set to DEFLATED.
		* The default compression method will be used if no compression method * was specified for the entry, and the current time will be used if * the entry has no set modification time.
		This method * will block until all the bytes are written.
	www.sims.berkeley.edu /~mikechen/jdk1.1/src/java/util/zip/ZipOutputStream.java (583 words)

	[No title]
		With one exception (hashStringBase256), this * integer can be larger than the size of the hash table, so the * caller must reduce the integer modulo the table size.
		* * The BUZ algorithm is the only string-hashing method in this file * that generates non-sequential hash values when the keys differ by * one in the last character (e.g., "foo1' and "foo2").
		For this * reason, BUZ is a good choice if you are using linear probing and * you expect that many of your keys will differ only in the last * character (such as variable names).
	www.cs.hmc.edu /~geoff/classes/hmc.cs070.200209/homework10/hashfuncs.cc (1337 words)

	CRC-N Syndrome Detector (Communications Blockset) (Site not responding. Last check: 2007-10-23)
		Detect errors in the input data frames according to the selected CRC method
		The CRC-N Syndrome Detector block is a simplified version of the General CRC Syndrome Detector block.
		A binary scalar or a binary row vector of length equal to the degree of the generator polynomial, specifying the initial state of the internal shift register.
	www-rohan.sdsu.edu /doc/matlab/toolbox/commblks/ref/crcnsyndromedetector.html (231 words)

	Cyclic Redundancy Check error detection
		CRC error detection computes the remainder of a polynomial division of a generator polynomial into a message.
		It is very difficult to deturmine how effective a given CRC will be at detecting errors.
		Use of the CRC technique for error correction normally requires the ability to send retransmission requests back to the data source.
	www.sxlist.com /techref/method/error/crc.htm (406 words)

	Object Oriented Design
		An early (1970) formal development process called the waterfall method postulated that one phase would run until complete, its output would spill over to the next phase, and the next phase would begin.
		As you think about the verbs in the task description, pick the card of the class that you think should be responsible, and write that responsibility on the left-hand side of the card.
		Responsibilities that you list on the CRC card are on a high level, and may need two or more member functions for carrying out.
	www.uwgb.edu /laplantb/CS372/PPT/Horstmann/ch13/ch13.html (2488 words)

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