偶校验

In asynchronous transmission, a simple error-detecting scheme called parity can be used.

在异步传输时，一个简单的错误发现原来叫做奇偶校验被运用。

The most obvious disadvantage of asynchronous data transmission is the need for a start, parity, and stop bit for each transmitted character.

对于一个传送的字符，异步数据传输都需要起始位、奇偶校验和停止位，这是它最明显的缺点。

It is used to set baud rate, parity check, number of data bits, stop bit.

它是用来设置波特率，奇偶校验，数据位数，停止位。

Since every valid character in a computer that uses even parity must always habe an even number of 1 bits,circuits for parity checking are built into the computer to constantly monitor the data moving through the systems.

因为计算机中使用偶校验时合法字符应该总有偶数个1，所以计算机中可装入奇偶检验检测电路，经常监测系统中移动的数据。

The polarities check ability, minimum code distance and capacity of correct single bit error of CRC-CCITT are proved by using galois field polynomial theory.

以国际标准CRC-CCITT循环冗余校验码为研究对象，利用近世代数多项式理论证明其奇偶校验性质、最小码距和纠正单比特错误能力。

The CRC-CCITT cyclic redundancy check code in international standard is studied in this paper. The polarities check ability, minimum code distance and capacity of correct single bit error of CRC-CCITT are proved by using galois field polynomial theory.

以国际标准CRC-CCITT循环冗余校验码为研究对象，利用近世代数多项式理论证明其奇偶校验性质、最小码距和纠正单比特错误能力。

To detect possible transmission errors, the receiver determines whether the received number of "1" bits is even or odd depending on the parity agreed.

为了检查可能传输中出现的错误，接收端将检查接收到的1的位的奇偶是否符合奇偶校验。

A character's 8 bits are stored in a row of chips; the ninth chip holds the parity bit, which is a 1 or 0, based on whether the parity scheme is odd or even.

每排集成电路片存储一个8bit的字符，第九个集成电路片为奇偶校验位，其值为1或0，取决于该字符的奇偶性。

The embodiment of the invention provides a method for coding the low-density parity checking code, comprising the following steps: in the iteration for the time of k, the variable node corresponding to an overturn function meeting the preset condition is overturned; according to the preset parameter, the reliability of the overturned variable node is corrected; according to the sequence of the overturned variable node, the checkout sub sequence is determined so as to output the coding result.

本发明实施例提供了一种低密度奇偶校验码的译码方法，主要包括：在第k次迭代中，对满足预设条件的翻转函数对应的变量节点进行翻转，根据预设的参数修正被翻转的变量节点的可靠度，根据翻转后的变量节点序列，确定校验子序列，以便输出译码结果。

The basic principles of linear programming algorithm for the maximum likelihood decoding of LDPC codes are analyzed, and the ways to construct the codeword polytope based on the factor graph expression of parity check matrix of LDPC codes are described.

分析了应用线性松弛方法对低密度奇偶校验码进行最大似然译码的基本原理，介绍了基于LDPC码校验矩阵因子图表达构造码字多胞形的方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。