| 摘要 |
<p>PURPOSE:To shorten a write processing time and to improve a system efficiency by writing to a memory, reading it and reversely transmitting together with a write response by a second device according to a write command including writing data from a first device. CONSTITUTION:The write command including the writing data is transmitted to a data carrier 20 from a control 10 through an ID controller 11, a read.write head part 15 and the transmitted data is written in an EEPROM 24 through a command memory control 23. After the writing, the ROM 24 is immediately read through the control 23, the write response is added, reversely transmitted to the control 10 and stored in the memory 16. Then, original data is compared with the reversely transmitted data, at the time of a coincidence, it is decided that a normal writing is executed, and at the time of a mismatch, an error processing is executed. According to this system, one writing is completed only by the write command and the write response to shorten the write processing time and enhance the system efficiency.</p> |
