Mastering device, disc manufacturing method, disc-shaped recording medium, disc reproduction device, and disc reproduction method

The invention relates to original price and device manufacturing plate and manufacturing method thereof and disk recording medium and plate and reproduction method, which can stably and a second digital information after and protecting copyright information defect or the influence of for defect, it does not provided on the disk recording medium. A rotary plate and recording medium and first signal recording pit is a second digital information. Is the second digital information, composed of the first signal the synchronous signal unit on ui, setting to of the second digital information multi-units seat is placed on recording. Image synchronous signal each unit on multiple value of reading the information recording the multi-units seat of a second digital information in process of reproduction and a reading the position information for integrated of the. The invention, a to the massive rotary a information on the integral and judging corresponding position of the time unit uis of multiple synchronous signal.