Information management method for appendage type additional information recording medium

Claim 1

A method for recording information intermittently on an appendage type additional information recording medium to enable reproduction from said recording medium in a read only reproduction device, the method comprising the steps of: providing on said recording medium a volume management area and a data area; recording data information to the data area and recording management information to the volume management area, said management information for managing the data information recorded on said recording medium; recording additional data information to the data area; renewing the management information for managing the data information previously recorded to generate updated management information for managing the data information and writing the updated management information to the volume management area; and filling with dummy data a non-recorded area on said recording medium between a last position of the updated management information and a start position of the data area for making the volume management area and the data area immediately adjacent; writing a descriptor terminator in the volume management area representing the termination of the volume management area.

Claim 2

A method for recording information intermittently on an appendage type additional information recording medium to enable reproduction from said recording medium in a read only reproduction device, the method comprising the steps of: providing on said recording medium a volume management area and a data area; recording data information to the data area and recording management information to the volume management area, said management information for managing the data information recorded on said recording medium; recording additional data information to the data area; renewing the management information for managing the data information previously recorded to generate updated management information for managing the data information and writing the updated management information to the volume management area; and filling with dummy data a non-recorded area on said recording medium between a last position of the updated management information and a start position of the data area for making the volume management area and the data area immediately adjacent; writing a descriptor terminator in the volume management area representing the termination of the volume management area.