Information signal edition appts., information signal edition method, and information signal edition program

Abstract

In an information signal editing device according to the present invention, when a user specifies a desired reproduction section or reproduction start position through a reproduction section specifying means (26) or a reproduction start position specifying means (27), a management information file recorded in a memory (102) is rewritten into a second management information file which is created on the basis of the specified information, and a second information file is set by a management information setting means (100) on the basis of the second management information file. The information signal editing device constructed as described above performs arbitrary virtual editing when a DVD-RAM disk (1) is non-rewritable, whereby the user can obtain a desired reproduction signal.

Description

technical field [0001] The present invention relates to an information signal editing device for editing information recorded on a recording medium such as an optical disc, an information signal editing method, and an information signal editing program. Background technique [0002] In recent years, a large amount of signals for reproducing video data for consumer use have been digitized and digitally recorded on various media. Among them, the DVD format is being popularized as a standardized format that is common throughout the world. In this DVD format, there is a "DVD Video Recording Standard" called playback as a standard for recording. Although details are omitted because they are described in this standard text, an outline thereof will be described with reference to FIG. 16 . [0003] FIG. 16 is a diagram showing the configuration of a conventional digital video recording and reproducing apparatus. [0004] In FIG. 16 , 1 is a DVD-RAM disc as a rewritable medium, 2 ...

AI Technical Summary

Problems solved by technology

[0022] However, in the above-mentioned structure, when the information signal cannot be rewritten, there is a problem that simple editing cannot be performed.

That is to say, in order to protect the information signal written into the DVD-RAM disc 1, the DVD-RAM disc 1 has applied the so-called write protection of prohibiting write processing, etc., because the first data on the DVD-RAM disc 1 cannot be performed Since the rewriting of the management information file 3 cannot be rewritten, the MPEG stream 2 that exhibits the above-mentioned characteristics of the disc cannot be rewritten, and simple editing for playback from a designated position cannot be performed.

[0023] In addition, in the above-mentioned structure, although the reproduction of the information signal is performed, there is a problem that it is sometimes impossible to create an arbitrary copy file selected by the user among the information signals recorded on the DVD-RAM disk 1.

[0024] Furthermore, in the case of creating a copy stream of an MPEG stream, since there is no means for managing the copy stream, there is a problem that it takes a long time to play back the created copy stream.

Images