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AssigneePioneer Corporation
InventorsTohru Kanegae, Masanori Nakahara, Takeshi Koda, Yasuko Fukuda, Takao Sawabe, Nobuyuki Takakuwa, Akira Imamura
Estimating the term…
An information recording medium includes an object data file for storing object data as a series of content information such as video information and audio information and play list information file for storing play list information defining a reproduction sequence on play list basis. Furthermore, the medium includes a disc information file for storing a plurality of title play lists each containing information specifying play list information defining a play list to be reproduced, pre-command information and post-command information specifying commands to be executed before and after a reproduction, respectively, according to the play list information.
An information recording medium, which can be recorded by an information recording apparatus or which can be reproduced by an information reproducing apparatus, on which one or a plurality of titles, each of which is a logically-grouped information unit, are recorded, said information recording medium comprising:
An information recording apparatus for recording one or a plurality of titles, each of which is a logically-grouped information unit, onto an information recording medium,
An information recording method of recording one or a plurality of titles, each of which is a logically-grouped information unit, onto an information recording medium,
An information reproducing apparatus for reproducing at least one portion of recorded titles from an information recording medium on which one or the plurality of titles, each of which is a logically-grouped information unit, are recorded said information recording medium comprising:
An information reproducing method of reproducing at least one portion of recorded titles from an information recording medium on which one or the plurality of titles, each of which is a logically-grouped information unit, are recorded, said information recording medium comprising:
A computer program product for controlling record and for tangibly embodying a program of instructions executable by a computer to make the computer function as at least one portion of a first recording device, a second recording device, a third recording device and a fourth recording device,
A computer program product for controlling reproduction and for tangibly embodying a program of instructions executable by a computer to make the computer function as at least one portion of a reading device and a reproducing device,
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Involving pulse code modulation of the colour picture signal components: involving data reduction
Electronic editing of digitised analogue information signals, e.g. audio or video signals: on discs
Programmed access in sequence to addressed parts of tracks of operating record carriers: of operating discs
On the same track as the main recording: used signal is digitally coded
Term ended 14 Sep 2026 (estimated)
The present invention relates to an information recording medium, such as a high-density optical disc, on which various information can be recorded at high density, such as main picture information or video information, audio information, sub picture information, and reproduction control information, an apparatus for and a method of recording the information onto the information recording medium, an apparatus for and a method of reproducing the information from the information recording medium, an apparatus and a method capable of both recording and reproducing the information, a computer program for controlling the record or the reproduction, and a data structure including a control signal for controlling the reproduction.
DVDs are generalized as optical discs on which various information is recorded, such as the video information, the audio information, the sub picture information, and the reproduction control information. According to the DVD standard, the video information (e.g. video data), the audio information (e.g. audio data), and the sub picture information (e.g. sub picture data) are individually packetized with the reproduction control information (e.g. navigation data) and are multiplexed and recorded on a disc in the “program stream” format of the MPEG 2 (Moving Picture Experts Group phase 2) standard, which is a highly efficient encoding technique. In the video information among them, there is only one stream of data compressed according to the MPEG video format (ISO 13818-2) within one program stream. On the other hand, the audio information is recorded in a plurality of methods (namely, linear PCM, AC-3, MPEG audio, and the like). The audio information can exist up to 8 streams within one program stream. The sub picture information is defined with a bit map and is compressed and recorded in a run-length method. The sub picture information can exist up to 32 streams within one program stream. In the case of the DVD, as described above, a plurality of streams of the chooseable or selectable audio information (e.g. streams of a stereo sound, a surrounding sound, an original English sound, a dubbed Japanese sound, and the like) and a plurality of streams of the chooseable or selectable sub picture information (e.g. streams of Japanese subtitle, English subtitle, and the like) are multiplexed and recorded by using the program stream format, for one stream of the video information in one movie or film, for example.
On the other hand, the “transport stream” format of the MPEG 2 standard has been recently standardized, and this is appropriate for data transmission. According to this transport stream format, a plurality of “elementary streams” are transmitted at the same time. For example, a plurality of shows or programs, such as many TV channels of satellite digital broadcasting, are time-division-multiplexed to one satellite wave and are transmitted at the same time. Namely, in the transport stream format, it is possible to time-division-multiplex the elementary streams of a plurality of main pictures or video, each of which has a large data amount, and transmit them at the same time. For example, it is possible to transmit at the same time a plurality of movies recorded on a plurality of DVDs.
FIG. 1 is a diagram showing a basic structure of an optical disc as being one embodiment of an information recording medium of the present invention, the upper part being a schematic plan view of the optical disc having a plurality of areas, the corresponding bottom part being an schematic diagram of the area structure in the radial direction;
FIG. 2 are a schematic diagram of the conventional program stream of the MPEG 2 (FIG. 2(a)) and a schematic diagram of the transport stream of the MPEG 2 used in the embodiment (FIG. 2(b));
FIG. 3 is a schematic diagram showing a data structure recorded on the optical disc in the embodiment;
(Information Recording Medium)
The embodiment of an information recording medium of the present invention will be explained with reference to FIG. 1 to FIG. 8. In this embodiment, the information recording medium of the present invention is applied to an optical disc of a type capable of recording (writing) and reproducing (reading).
Firstly, the basic structure of the optical disc in the embodiment will be explained with reference to FIG. 1. The upper part of FIG. 1 is a schematic plan view of the optical disc structure having a plurality of areas, and the bottom part is a schematic diagram of the area structure in its radial direction.