| 摘要 |
PROBLEM TO BE SOLVED: To realize a data memory circuit in a digital transmitter with a simple and small scale circuit configuration. SOLUTION: The data memory circuit 100 is provided with three data memories DM1, DM2, DM3. Then by writing sequentially data to the three data memories by each prescribed time and reading sequentially the data for a prescribed time, data write and read can be attained at the same time. Furthermore, when one data memory is faulty, a counter-measure to use the two remaining data memories to write/read data alternately is taken.
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