The meaning of PARITY BIT is a bit added to an array of bits (as on magnetic tape) to provide parity as a means of error checking.
Parity checking is also used in communication betweenmodems. Here, parity checking can be selected to be even -- a successful transmission forms an even number -- or odd. Users may also select no parity, meaning the modems will not transmit or check a parity bit. When no parity is selec...
1]T=x[PTIn−k]=xHT=0,H=[PTIn−k](n−k)×n. The matrix H in (6.19) is known as the parity-check matrix. We can easily verify that: (6.20)GHT=[IkP][PIn−k]=P+P=0, meaning that the parity-check matrix of an (n,k) linear block code H is a matrix of rank n ...
A very important class of codes which was sensibly influenced by geometric constructions is given by low-density parity-check (LDPC) codes, which were introduced by Gallager in his seminal 1962 paper [7]. LDPC codes, as originally proposed, are binary linear codes with a very sparse parity-ch...
In a generic magnet, the permeability, meaning the magnetic response to a weak external perturbation is governed by the behavior of the spin waves which are collective transverse oscillations (with their quantum termed magnon) around the ground state. Miniaturized magnonic logic circuits1,2,3,4,5...
All scenarios we present in the following feature an electroweak vacuum which is either stable or metastable long-lived, meaning that the tunneling time to the global minimum is longer than the age of the Universe. 2.2 Determining the LSP
(2) If there is a cache hit, meaning that the OD block to be overwritten has at some point in time been Read and has an associated RRR-parity block already, then the OD block and OP block need not be Read again. Instead, the ND block is XOR'd with the associated RRR-parity block...
addition, while the invention is described in embodiments using hard disk drives, it should be appreciated that the invention offers its benefits for an array of any type of direct access storage device. Thus the term “direct access storage device” should not be narrowly construed as meaning ...
A “row-diagonal” (R-D) parity technique reduces overhead of computing diagonal parity for a storage array adapted to enable efficient recovery from the concurrent failure of two sto
A system for implementing RAID-5 parity generation and reconstruction. Data for an array of disk drives is placed in an I/O buffer. The RAID-5 parity engine creates parity data and stores the resultin