Playback device, integrated circuit, recording medium

A semiconductor integrated circuit loaded in a playback device for playing back stream data which includes a main-view video stream to be used for playback of a monoscopic image, a sub-view video stream to be used, in combination with the main-view video stream, for playback of a stereoscopic image, a graphics stream, and an identification flag, wherein

• the main-view video stream is multiplexed as a main-view transport stream and then divided into a plurality of main-view data groups,
• the sub-view video stream is multiplexed as a sub-view transport stream and then divided into a plurality of sub-view data groups,
• the main-view data groups and the sub-view data groups are arranged in an interleaved manner in the stream data,
• the graphics stream is multiplexed into either or both of the main-view transport stream and the sub-view transport stream, and at least one of the main-view data groups and the sub-view data groups include graphics data,
• playback of the graphics stream includes a process of selecting a playback type of the graphics stream from a first playback type and a second playback type, the first playback type using the graphics stream as a monoscopic graphics stream, and the second playback type realizing a stereoscopic display by using a pair of left-eye graphics stream and right-eye graphics stream,
• the identification flag indicates whether or not there is a pair of left-eye graphics stream and right-eye graphics stream in the graphics stream in the stereoscopic playback mode,
• the semiconductor integrated circuit comprises:
• a main control unit operable to control the semiconductor integrated circuit;
• a stream processing unit operable to receive the stream data, store the received stream data temporarily into a memory provided inside or outside the semiconductor integrated circuit, and demultiplex the stream data into video data and graphics data;
• a signal processing unit operable to decode the video data and the graphics data to generate decoded video data and decoded graphics data;
• and
• an AV output unit operable to output the decoded video data, wherein
• the stream processing unit includes
• a switch sub-unit operable to switch between a first area and a second area in the memory to store the received stream data therein,
• the main control unit controls the switch sub-unit to store data belonging to the main-view data groups into the first area, and to store data belonging to the sub-view data groups into the second area,
• a third area in the memory stores information that 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 playback device,
• the main control unit selects a playback type for playback of the graphics stream, in accordance with the identification flag and the information that 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 playback device, and
• the AV output unit superimposes the decoded video data with the decoded graphics data in accordance with the selected playback type, and outputs data in which the decoded video data is superimposed with the decoded graphics data.

A playback device for playing back a recording medium, the playback device comprising:

• a capability register indicating whether or not a capability to perform a stereoscopic display is present in a display device connected with the playback device;
• and
• a mode register storing an output mode of the playback device, wherein
• it is judged whether or not a plurality of conditions are satisfied, and a stereoscopic output mode is set in the mode register when it is judged that the plurality of conditions are satisfied,
• a first condition among the plurality of conditions is that the capability register indicates that the capability to perform the stereoscopic display is present in the display device connected with the playback device,
• a second condition among the plurality of conditions is that an initial value of an output mode recorded on the recording medium indicates the stereoscopic output mode, and
• it is judged whether or not the first condition and the second condition are satisfied when a disc is read, and the stereoscopic output mode is set in the mode register when it is judged that the first condition and the second condition are satisfied.

A playback device for playing back a recording medium, the playback device comprising:

• a capability register indicating whether or not a capability to perform a stereoscopic display is present in a display device connected with the playback device;
• and
• a mode register storing an output mode of the playback device, wherein
• it is judged whether or not a plurality of conditions are satisfied, and a stereoscopic output mode is set in the mode register when it is judged that the plurality of conditions are satisfied,
• the recording medium stores playlist information which indicates a playback path,
• a first condition among the plurality of conditions is that the capability register indicates that the capability to perform the stereoscopic display is present in the display device connected with the playback device,
• a second condition among the plurality of conditions is that a piece of playlist information to be played back includes an extension stream selection table for stereoscopic playback,
• the extension stream selection table shows a list of elementary streams that can be selected by the playback device in the stereoscopic output mode, in correspondence with stream numbers, and
• it is judged whether or not the first condition and the second condition are satisfied when a playback of a playlist is started while the stereoscopic output mode is set in the mode register, and the stereoscopic output mode set in the mode register is maintained when it is judged that the first condition and the second condition are satisfied.

A playback device for playing back a recording medium, the playback device comprising:

• a capability register indicating whether or not a capability to perform a stereoscopic display is present in a display device connected with the playback device;
• and
• a mode register storing an output mode of the playback device, wherein
• it is judged whether or not a predetermined condition is satisfied, and a stereoscopic output mode is set in the mode register when it is judged that the predetermined condition is satisfied,
• display devices having the capability to perform a stereoscopic display include display devices which require viewers to wear stereoscopic glasses to view a stereoscopic playback, and display devices which do not require viewers to wear stereoscopic glasses to view a stereoscopic playback,
• the capability register includes a glasses necessity flag that indicates whether or not it is required for viewers to wear stereoscopic glasses to view a stereoscopic playback when the display device connected with the playback device has the capability to perform a stereoscopic display, and
• when the glasses necessity flag indicates that it is not required for viewers to wear stereoscopic glasses to view a stereoscopic playback, it is judged that the predetermined condition is satisfied and the stereoscopic output mode is set in the mode register.

A playback device for playing back a recording medium, the playback device comprising:

• a capability register indicating whether or not a capability to perform a stereoscopic display is present in a display device connected with the playback device;
• and
• a mode register storing an output mode of the playback device, wherein
• the capability register includes a display type flag that indicates whether the display device connected with the playback device supports a normal-quality image display or a high-quality image display, and it is judged that the predetermined condition is not satisfied when the display type flag indicates that the display device supports the normal-quality image display.

A recording medium on which an index table is recorded, wherein

• the index table includes application information,
• the application information includes initial output mode information and format frame rate information,
• the initial output mode information is information that indicates whether an output mode preferentially set in a playback device is a monoscopic output mode or a stereoscopic output mode, and
• the format frame rate information indicates an image format and a frame rate that can be used as output mode information of the playback device when the recording medium is inserted in the playback device.

A playback device for playing back a recording medium on which an index table is recorded, wherein

• the index table includes application information,
• the application information includes initial output mode information and format frame rate information,
• the initial output mode information is information that indicates whether an output mode preferentially set in the playback device is a monoscopic output mode or a stereoscopic output mode,
• the format frame rate information indicates an image format and a frame rate that can be adopted in a playback output by the playback device, and
• the playback device reads the format frame rate information from the recording medium when the recording medium is inserted in the playback device, and uses the format frame rate information as output mode information of the playback device.

A recording medium on which a stream file and a stream management file are recorded,

• the stream file includes a video stream which includes a plurality of pieces of picture data,
• the stream management file includes an entry map which includes entries each indicating an address of picture data in correspondence with a playback time,
• the picture data includes main-view picture data constituting a main view of a stereoscopic image and sub-view picture data constituting a sub view of the stereoscopic image,
• the entry map includes a basic entry map which is used when a monoscopic image is played back, and an extension entry map which is used together with the basic entry map when the stereoscopic image is played back, and
• the extension entry map has entries that indicate times that are indicated by entries of the basic entry map corresponding to the extension entry map.

A playback device for playing back a recording medium on which a stream file and a stream management file are recorded,

• the stream file includes a video stream which includes a plurality of pieces of picture data,
• the stream management file includes an entry map which includes entries each indicating an address of picture data in correspondence with a playback time,
• the playback device comprises:
• a reading unit operable to read out the picture data and the entry map from the recording medium;
• and
• a playback unit operable to playback an image by decoding the picture data, wherein
• the reading unit accesses, by a random access, a piece of picture data among the plurality of pieces of picture data that is indicated by an entry of the entry map,
• the picture data includes main-view picture data constituting a main view of a stereoscopic image and sub-view picture data constituting a sub view of the stereoscopic image,
• the entry map includes a basic entry map which is used when a monoscopic image is played back, and an extension entry map which is used together with the basic entry map when the stereoscopic image is played back, and
• the extension entry map has entries that indicate times that are indicated by entries of the basic entry map corresponding to the extension entry map.