| 摘要 |
<p>PURPOSE:To control the write-in and readout without providing special pattern, by selecting the information sector connected via the address sector and flag in agreement with external address, after positioning the head with the flag between the address of start end sector and the information sector. CONSTITUTION:The readout cylinder address of the address sector 41 after the sector start point 39 and the address set from the external part to the cylinder address register 13 are compared at the control circuit 17, and simultaneously the readout head address of the sector 41 is compared, and if they are in agreement, the head is positioned with the positioning circuit 10. Then, the start end sector 41 is detected with the readout of the content of the flag 43 provided between the information sectors 41 and 42 and each address. After that, the agreement between the address 2 from external set to the record address register 13 and the readout address of the sectors 41... controls the wirte-in and readout to the sector 42 with the recording format unnecessary for specific marker. Accordingly, the control circuit is made simple.</p> |
