Data recording apparatus, data recording method, and optical recording medium including pseudo-erasing features

Abstract

Data is recorded on packet basis to a track of an optical recording medium and the data is pseudo-erased by erasing contents information of the track having the data. Information indicating the end position of the packet containing the data is recorded on the optical recording medium and a new data is recorded to the track where the data has been pseudo-erased in accordance with the information indicating the end position of the packet.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is a continuation of application Ser. No. 09 / 819,849, filed on Mar. 29, 2001, the entire contents of which being incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a data recording apparatus and a data recording method for data recording on a packet basis onto a track of an optical recording medium as well as to an optical recording medium having a track on which data is recorded on a packet basis. [0004] 2. Description of the Related Art [0005] In an optical disc such as a compact disc (CD), data recording is performed through small holes, called pits, formed on a recording surface of the disc. Data is reproduced by reading presence / absence of the pit and its length. As the disc of such CD-specification, there are also a CD-Recordable (CD-R) disc in which additional data can be written and a CD-Rewritable (CD-RW) disc in which data can be...

AI Technical Summary

Benefits of technology

The present invention provides a data recording apparatus and method for an optical recording medium that allows for accurate and quick detection of a new data position after pseudo-erasing previous data. This is achieved by recording a new data onto a track where the previous data has been pseudo-erased, based on information indicating the end position of the packet containing the new data. This results in an optical recording medium that can accurately detect and record new data positions quickly.

Problems solved by technology

However, since the maximum number of write tracks to be written is limited to 99, there is a problem that it is impossible to sufficiently utilize the storage capacity of the optical disc.

However, in this optical disc, when the program area contains 99 logical tracks recorded, a new data item cannot be recorded even when an area available for recording is remaining in this program area.

Thus, the optical disc has a problem that it is impossible to use the storage capacity sufficiently.

Accordingly, there is often a case that a data is written at an erroneous position, considering that the pseudo-erased data is an actual data.

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