Patent ID: 8358567

Claim:
An information reproduction device for reproducing information from a write-once information recording medium, the write-once information recording medium including: a user data area for recording user data; and a temporary management information area for recording temporary management information, wherein: the temporary management information includes recording date information regarding a date on which the temporary management information was recorded; and where logical overwrite is employed for the write-once information recording medium and a plurality of temporary management information are recorded in the temporary management information area, the information reproduction device: receives date identifying information with which it is possible to identify a date from outside the information reproduction device; reproduces, from the temporary management information area, a latest one of at least one temporary management information including recording date information indicating a date that coincides with, or is prior to, the date indicated by the date identifying information; and reproduces data of the user data area in accordance with the reproduced temporary management information.