| 摘要 |
PURPOSE:To select quickly and accurately an optional page by reading intermittently a page with a magnetic head part of a laminated floppy disc device, and providing a circuit correcting a page position with a resulted signal. CONSTITUTION:A page position command signal of a disc 2 from a CPU19 is converted into a step pulse by a step converting device 20, fed to a voice coil motor 5 and an opening nozzle 4 is moved. A signal of a magnetic head 10 is fed back to the CPU19 via a read/write amplifier 27 and a signal processor 26. A page position correcting circuit 28 consists of a register, a comparison operating circuit and a correction register together with the CPU19 and an addition/ subtraction counter circuit 21 and the real operation of the register and operating circuit is conducted by the CPU19. An optional page is selected quickly and accurately by a positioning and page position correcting circuit by an external scale. |
