SIGNAL PROCESSING CIRCUIT

摘要

In a signal processing circuit, data as read is written into a buffer (10). When user block determining means (7) determines that a user block is not a desired one, address pointer generating means (8) causes an address pointer to be kept at its original position in the buffer (10). The user data is overwritten from the beginning of the written link part data, thereby abandoning the written link part data. In this way, when a disc in which writing has performed by packet-write system is read, no unnecessary link part data is stored into the buffer (10). Moreover, there is no need to provide a buffer space for storing link part data, and further there is no probability of storing discontinuous data, which occurs due to data dropout or the like, into the buffer (10). This can reduce load of system control means (11) and shorten the time required for accessing data.