Abstract: To aim to increase the use efficiency of a screen on which a subtitle is displayed together with a stereoscopic image. A video shift mode is set for each subtitle. When a stereoscopic image is played back, in accordance with the video shift mode of the subtitle, a video plane is shifted upward or downward to perform cropping processing of collecting black frames provided in the upper end and the lower end of the screen in either one of the upper end and the lower end so as to save a display region of the subtitle.

Abstract: Playback device for playing back graphics stream according to stream selection table recorded on recording medium. Stream number register stores, as current stream number, one of a plurality of stream numbers written in the stream selection table. Capability register indicates capability to play back graphics. Procedure means determines playback type of graphics corresponding to the current stream number, based on the playback capability indicated by the capability register. Playback of graphics streams falls into two types: first playback type in which a monoscopic graphics stream is used; and second playback type in which a pair of left-eye graphics stream and right-eye graphics stream is used to perform a stereoscopic playback. The capability register indicates whether capability to perform the stereoscopic playback using the pair of left-eye and right-eye graphics streams is present in graphics decoder.

Abstract: The encoding method obtains a video stream including pictures and display information, the pictures being L-R containing images each having a display area split into two sub-areas, one storing a left-view image and the other storing a right-view image. The display information includes 2D display information and 3D display information, each of which including cropping information specifying an area in the display area as an area to be cropped, the area in the display area specified by the cropping information of the 3D display information is for 3D display, and the area in the display area specified by the cropping information of the 2D display information is for 2D display, and is one of the left-view image and the right-view image.

Abstract: A left view graphics stream and a right view graphics stream recorded on a recording medium each include one or more display sets, and the display sets are data groups used for displaying one screen worth of one or more graphics objects. The one or more display sets included in the left view graphics stream are in one-to-one correspondence with the one or more display sets included in the right view graphics stream, and an identical playback time for the video stream on the playback time axis is set in each of the corresponding display sets. Each display set includes state information indicating whether the data is all data necessary for displaying one screen worth of one or more graphics objects, or is a difference from the immediately previous display set, and the state information included in corresponding display sets indicate identical content.

Abstract: On a recording medium, stereoscopic and monoscopic specific areas are located one after another next to a stereoscopic/monoscopic shared area. The stereoscopic/monoscopic shared area is a contiguous area to be accessed both in stereoscopic video playback and monoscopic video playback. The stereoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in stereoscopic video playback. In both the stereoscopic/monoscopic shared area and the stereoscopic specific area, extents of base-view and dependent-view stream files are arranged in an interleaved manner. The extents on the stereoscopic specific area are next in order after the extents on the stereoscopic/monoscopic shared area. The monoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in monoscopic video playback. The monoscopic specific area has a copy of the entirety of the extents of the base-view stream file recorded on the stereoscopic specific area.

Abstract: On a recording medium, stereoscopic and monoscopic specific areas are located one after another next to a stereoscopic/monoscopic shared area. The stereoscopic/monoscopic shared area is a contiguous area to be accessed both in stereoscopic video playback and monoscopic video playback. The stereoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in stereoscopic video playback. In both the stereoscopic/monoscopic shared area and the stereoscopic specific area, extents of base-view and dependent-view stream files are arranged in an interleaved manner. The extents on the stereoscopic specific area are next in order after the extents on the stereoscopic/monoscopic shared area. The monoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in monoscopic video playback. The monoscopic specific area has a copy of the entirety of the extents of the base-view stream file recorded on the stereoscopic specific area.

Abstract: Provided is a playback device which is capable of correctly determining a construction status of a virtual package. An access is attempted to a state signaling file recorded in a local storage using a fixed address on a virtual file system assigned by merge management information (step S13). The virtual package construction status is determined according to failure or success of the attempted access.

Abstract: A device for displaying stereoscopic images on a screen includes a receiving unit, signal processing unit, and display unit. The receiving unit receives stream data including left and right views of stereoscopic images. The signal processing unit alternately extracts left- and right-view frames from the stream data. The display unit displays each frame sent from the signal processing unit for a predetermined time on the screen. The signal processing unit sends the display unit one left-view frame a first number of times and one right-view frame a second number of times during one frame period of the stereoscopic images. The signal processing unit calculates the frame rate at which the display unit displays the left- and right-view frames divided by the frame rate of the stereoscopic images. The signal processing unit sets the first and second numbers of times to different values for one frame period of the stereoscopic images.

Abstract: A device for displaying stereoscopic video images on a screen includes a receiving unit, signal processing unit, and display unit. The receiving unit receives stream data including left-view frames and right-view frames of stereoscopic images. The signal processing unit alternately extracts left-view frames and right-view frames from the stream data. Over one frame period of the stereoscopic video images, the signal processing transmits a pair of a left-view frame and a right-view frame when the control information indicates a 3D playback mode, and transmits only a left-view frame when the control information indicates a 2D playback mode. The display unit displays each frame transmitted from the signal processing unit for a predetermined time on the screen.

Abstract: On a recording medium, stereoscopic and monoscopic specific areas are located one after another next to a stereoscopic/monoscopic shared area. The stereoscopic/monoscopic shared area is a contiguous area to be accessed both in stereoscopic video playback and monoscopic video playback. The stereoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in stereoscopic video playback. In both the stereoscopic/monoscopic shared area and the stereoscopic specific area, extents of base-view and dependent-view stream files are arranged in an interleaved manner. The extents on the stereoscopic specific area are next in order after the extents on the stereoscopic/monoscopic shared area. The monoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in monoscopic video playback. The monoscopic specific area has a copy of the entirety of the extents of the base-view stream file recorded on the stereoscopic specific area.

Abstract: A left view graphics stream and a right view graphics stream recorded on a recording medium each include one or more display sets, and the display sets are data groups used for displaying one screen worth of one or more graphics objects. The one or more display sets included in the left view graphics stream are in one-to-one correspondence with the one or more display sets included in the right view graphics stream, and an identical playback time for the video stream on the playback time axis is set in each of the corresponding display sets. Each display set includes state information indicating whether the data is all data necessary for displaying one screen worth of one or more graphics objects, or is a difference from the immediately previous display set, and the state information included in corresponding display sets indicate identical content.

Abstract: A playback device plays back a plurality of digital streams constituting a stream sequence while sequentially downloading the streams from an external resource contains time information indicating the current stream sequence playback time and state information indicating whether each stream is in a playable or non-playable state, and comprises an executor operable to execute an application corresponding to the stream sequence and a playback controller operable to control stream sequence playback. The application includes playback interval information for each stream, and specifies the subsequent stream to be played back after the current stream according to the playback interval information. When the state information of the subsequent stream is not the playable state, the playback controller performs one of a trickplay operation for extending the display duration of the current stream or a substitute video playback operation after the current stream in accordance with a request from the application.

Abstract: A playback device includes a reading unit that reads extent blocks from a recording medium. A switching unit extracts a main-view stream and a sub-view stream from the extent blocks. Each stream is stored in a different read buffer. A decoding unit reads and decodes each stream from a corresponding read buffer. A time (t) required for the decoding unit to decode all data blocks in one extent block is greater than or equal to the sum (t1+t2+t3) of a time (t1) required for the reading unit to read the data blocks except for the top data block in the extent block, a time (t2) required for the reading unit to start to read the top of a next extent block from the time of finishing reading the tail of the extent block, and a time (t3) required for the reading unit to read the top data block in the next extent block.

Abstract: Provided is a recording medium on which are recorded a main-view stream, sub-view stream, and management information. The management information includes a system rate for each stream. Each stream is divided into a plurality of data blocks that form a plurality of extent blocks. In each extent block, main-view data blocks and sub-view data blocks are in a continuous interleaved arrangement. A main-view data block and sub-view data block forming a single pair each have a maximum size that is determined by the following conditions: (i) the system rate of the sub-view stream, (ii) whether the pair is the top pair within the extent block, and (iii) whether a long jump region exists between the recording areas of two extent blocks that are to be read continuously.

Abstract: A left view graphics stream and a right view graphics stream recorded on a recording medium each include one or more display sets, and the display sets are data groups used for displaying one screen worth of one or more graphics objects. The one or more display sets included in the left view graphics stream are in one-to-one correspondence with the one or more display sets included in the right view graphics stream, and an identical playback time for the video stream on the playback time axis is set in each of the corresponding display sets. Each display set includes state information indicating whether the data is all data necessary for displaying one screen worth of one or more graphics objects, or is a difference from the immediately previous display set, and the state information included in corresponding display sets indicate identical content.

Abstract: A left view graphics stream and a right view graphics stream recorded on a recording medium each include one or more display sets, and the display sets are data groups used for displaying one screen worth of one or more graphics objects. The one or more display sets included in the left view graphics stream are in one-to-one correspondence with the one or more display sets included in the right view graphics stream, and an identical playback time for the video stream on the playback time axis is set in each of the corresponding display sets. Each display set includes state information indicating whether the data is all data necessary for displaying one screen worth of one or more graphics objects, or is a difference from the immediately previous display set, and the state information included in corresponding display sets indicate identical content.

Abstract: A left view graphics stream and a right view graphics stream recorded on a recording medium each include one or more display sets, and the display sets are data groups used for displaying one screen worth of one or more graphics objects. The one or more display sets included in the left view graphics stream are in one-to-one correspondence with the one or more display sets included in the right view graphics stream, and an identical playback time for the video stream on the playback time axis is set in each of the corresponding display sets. Each display set includes state information indicating whether the data is all data necessary for displaying one screen worth of one or more graphics objects, or is a difference from the immediately previous display set, and the state information included in corresponding display sets indicate identical content.

Abstract: A playback device for playing back a graphics stream in accordance with a stream selection table recorded on the recording medium. A procedure means determines a playback type of a graphics corresponding to the current stream number, based on the playback capability indicated by the capability register. The playback of graphics streams falls into two types, one of which is a first playback type in which a monoscopic graphics stream is used and the other is a second playback type in which a pair of left-eye graphics stream and right-eye graphics stream is used to perform a stereoscopic playback. The capability register indicates whether or not a capability to perform the stereoscopic playback by using the pair of left-eye graphics stream and right-eye graphics stream is present in the graphics decoder.

Abstract: Provided is a recording medium in which extents for a base-view and a dependent-view are arranged alternately. The lower limit of the size of the base-view extents is the larger of a first lower limit value and a second lower limit value. The lower limit of the size of the dependent-view extent is a third lower limit value. The first lower limit value is determined so that, in monoscopic video playback, buffer underflow does not occur during jump periods between base-view extents. The second lower limit value is determined so that, in stereoscopic video playback, buffer underflow does not occur during read periods from each base-view extent to a next dependent-view extent. The third lower limit value is determined so that, in stereoscopic video playback, buffer underflow does not occur during read periods from each dependent-view extent to the next base-view extent.

Abstract: A main-view stream and a sub-view stream are recorded on a recording medium. The main-view stream is used for monoscopic video playback. The sub-view stream is used for stereoscopic video playback in combination with the main-view stream are recorded. The main-view stream includes a plurality of main-view pictures, and the sub-view stream includes a plurality of sub-view pictures. The main-view pictures and the sub-view pictures are in one-to-one correspondence. A B picture is not used as a reference picture for compression of any of the sub-view pictures whose corresponding main-view picture is one of an I picture and a P picture.