Patent ID: 7423938

Claim:
A recording and regeneration device, comprising: an optical pickup for irradiating light onto a recording medium where a recording layer that is recordable and regeneratable optically is formed on a substrate in which first content information is recorded as phase pits using light reflectance changes, and separating and detecting the information of said phase pits and information of said recording layer; a magnetic recording head for recording information on said recording layer along with said irradiating light; a timing information detection circuit for detecting timing information added to said first content information from reproduced output of said phase pits; a controller for recording second content information, which is input along with the regeneration of said first content information, on said recording layer according to said detection of said timing information, and regenerating said first content information of said phase pits and said second content information of said recording layer from the optical pickup; and output mechanism for synthesizing and outputting said regenerated first and second content information with delaying at least one of said regenerated first and second content information.