Abstract: A system for reproducing an optical disk which can prevent the restraint of an optical pickup in a track due to a scratch or other imperfection on the optical disk. The system includes checking whether or not there has been an increase of time in accordance with time information of a Q-channel in the demodulated subcode at the current pickup position, and, when the time is not increased, muting a reproduction output and jumping the optical pickup as far as a predetermined track. Thus, regardless of the occurrence of the optical pickup restraint phenomenon, reproduction can be continued by track jumping.

Abstract: A disc playing apparatus allows to set the reproduction speed of subcode information at a designated speed. The subcode read-out by a reading device is decoded by a decoding device and each piece of digital data successively output from the decoding device is transmitted at a predetermined transmission rate. The interval between pieces of the digital data is varied in response to a designated reproduction speed, and at the same time each piece of the digital data is transmitted at the predetermined transmission rate.