| 摘要 |
PURPOSE:To realize a data protection transmitter from which original information is reproduced by allowing a prescribed code table to code the information to be transmitted into plural number of divided information, transmitting them via plural transmission lines, referencing the code table at the reception side and decoding the original information from the received prescribed number of divided information. CONSTITUTION:It is assumed that 4-bit original information is 1000. In referencing and coding the 1st line of the table I, four pieces of 2-bit divided information such as A=11, B=10, C=01 and D=00 are obtained. Two optional ones among them are extracted, they are collated with the table II, the coincident information is selected and the original information is decoded. As for the error check processing for the decoded information next, when the information of B=10 becomes B=01, A=11, B=01 are given similarly in the table II and succeeding tables, and the relation of X=1011 is obtained with information X= 1111, C=01, D=00, and since the X information is not equal, it is detected that an error takes place. The correct information as X=1011 is restored through the combination of extraction of two data from the correct A, C, D in the error correction method.
|
