| 摘要 |
PURPOSE:To process definitely data on a recording medium by forcing a reader to switch in accordance with the conveyance of the recording medium and then by switching the reader on detecting a space by a detecting mechanism when a recording medium with a space stage is conveyed. CONSTITUTION:A transportation mechanism conveys recording miedum 1 with data recorded over several stages along conveyance path 2 and reading heads 11a- 11c of readers 10a-10c arranged on conveyance path 2 read data at assigned stages. Those read data are supplied through multiplexer 15 to data processing circuit 14 which processes transferred data. Then, readers 10a-10c are switched circularly in fixed order by multiplexer 15. Then, counter circuit 17 connected to the multiplexer 15 and detectors 9a-9c which detect data at each stage arranged on conveyance path 2 are provided and outputs of detectors 9a-9c are supplied to multiplexer 15 through circuit 17 while data stored in recognition parts 12a- 12c of readers 10a-10c are supplied to circuit 14. |
