Optical recording medium with lists having playback control info

Dynamic information storage or retrieval – Storage medium structure – Optical track structure

Patent

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Details

386126, G11B 724, H04N 576

Patent

active

056871600

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention relates to an information recording medium applied to e.g. a CD-ROM or CD-I which are read-only memories employing so-called compact discs and an information reproducing apparatus for reproducing the information supplied by the information recording medium, such as the CD-ROM or CD-I.


BACKGROUND ART

One information recording media is a compact disc comprised of an optical disc having audio signals recorded thereon, that is a compact disc-digital audio (CD-DA).
However, with the CD-DA, referred to hereinafter as audio CD, sound-only data is recorded on a unit termed a track, so that it is not possible to record the program or script controlling the playback function.
On the other hand, only the linear reproduction or the reproduction in the sequence designated by the user is carried out, such that there is not the degree of freedom even if the purveyor of the contents intend to reproduce signals in an alternative sequence.
On the other hand, it is possible with the so-called CD-I (CD-Interactive) to handle the sound, moving pictures or still pictures as data files.
However, data accessing is performed through a file system and is complex.
Although complex operations may be achieved depending on program types, since the program is a code depending on the player's CPU (central processing unit), there exist a large number of hardware-related limitations, while the program itself is difficult to formulate.


DISCLOSURE OF THE INVENTION

In view of the foregoing, it is an object of the present invention to provide an information recording medium which is capable of recording data of moving pictures still pictures or speech as a data file, which suffers from fewer limitations with respect to the hardware for reproduction and which is capable of rendering the data recorded on the hardware accessible for reproduction. It is a further object of the present invention to provide an information reproducing apparatus for reproducing the information recording medium.
The present invention has been proposed for achieving the above object. The information recording medium has recorded thereon the picture information or the speech information. A plurality of items including picture information and/or speech information and playback control information for controlling the reproduction of the items are recorded on the recording medium. The playback control information is made up of plural lists. At least some of the lists include the item information indicating one or a plurality of items reproduced in accordance with the lists and a pointer representing the offset from the leading end of the playback control information indicating a separate list connected to the lists.
An information reproducing apparatus for reproducing an information recording medium having recorded thereon picture information or speech information. A plurality of items composed of the picture information and/or the speech information and the playback control information for controlling the reproduction of the items are recorded on the recording medium. The playback control information is made up of plural lists. At least some of the lists include the item information indicating one or a plurality of items reproduced in accordance with the lists and a pointer representing the offset from the leading end of the playback control information indicating a separate list connected to the lists. The apparatus includes reproducing means for reproducing the information recorded on the information recording medium, input means for inputting the user's selection, and output means for outputting the picture information and/or the speech information reproduced by the reproducing means. The apparatus further includes control means for controlling the reproduction of the respective items by the reproducing means based upon the item information in a predetermined list of the playback information reproduced by the reproducing means. The control means causes switching of the list of interpretation based on the pointer when the user's sele

REFERENCES:
patent: 5455684 (1995-10-01), Fujinami et al.
patent: 5497241 (1996-03-01), Ostrover et al.
patent: 5504585 (1996-04-01), Fujinami et al.
Nikkei Electronics, Nov. 8, 1993 (No. 594) Japanese language catalog pp. 169-174 with English language translation.

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