| 摘要 |
PURPOSE:To enable the titled method to immediately select one of multiple-written plural data blocks by comparing and collating output data with a counter and a register with a collating circuit while control information is written on respective blocks and is read. CONSTITUTION:Control information is recorded to a data block number recording area (c). Namely, the area (c) consists of 3 parts, and first 2 parts are a track number recording part (f) and another is multiple data recording part (g). Control data are stored from reading signal data outputted from EOR9 to a register 10 for reading. At this time, A counter 11 sets preset value from MPU1 beforehand, when reading and reading errors are executed, they jog by the pulse from MPU1, these values are outputted to a comparing circuit 12 each time they jog, and the values are compared and collated with the output data of the register for reading at the comparing circuit 12. |
