| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data transmitter capable of realizing a frequency spread with a comparatively simple configuration to lower a peak of an energy level of transmission data, and eliminating mutual interference with other communication equipment to prevent the generation of noise and the occurrence of malfunction. <P>SOLUTION: In the data transmitter, input data 10 is inputted in one input terminal of an exclusive OR circuit 14, the output of the exclusive OR circuit 14 is passed through two stages of delay circuits 16, 17, then is inputted in another input terminal of the exclusive OR circuit 14, the output of the exclusive OR circuit 14 is inputted in input on the positive side of an adder circuit 18 having two inputs as the input on the positive side and the input on the negative side, and the output of the delay circuit 17 at the second stage is inputted in the input on the negative side, thereby defining the output of the adder circuit 18 as the output data. In the transmitter, a high speed clock having speed of m-fold of an input clock synchronized with the input data is defined as clock input of the two delay circuits 16, 17. <P>COPYRIGHT: (C)2004,JPO |
