RECORDING AREA MANAGING METHOD, DATA RECORDER/ REPRODUCER, DATA RECORDER, DATA REPRODUCER AND DATA RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a recording area managing method, a data recorder/ reproducer and a data recording medium in which a recording area can be used efficiently. SOLUTION: One video channel and four audio channels are set as an area management unit of lowermost layer and each channel is assigned with a recording area. As an upper layer, a main audio channel 16 and a sub-audio channel 17 each comprising a set of two audio channels for stereo recording are provided, an area management unit 18 referred to main AV data channel comprising video + two audio channels suitable for ordinary camera input is provided further thereon, and an uppermost area management unit 19 for all channel simultaneous recording area or all channel unrecorded area is provided. The recording data and the recording area are managed utilizing a management unit of appropriate layer depending on the combination of input data. Remaining idle area is also managed utilizing a management unit of appropriate layer.