Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Germano Leichsenring

Tomokazu Kanamaru

Keiichi Tanaka

Hidetaka Ohto

Ken Yamashita

Osamu Yamaji

Masahiro Oashi

Hidetaka Oto

Tomoko Katayama

Masayuki Kozuka

Yoshihiro Mori

Yoshiichiro Kashiwagi

Satoshi Hashimoto

Masafumi Okubo

Tomonori Nakamura

Nobuki Tominaga

A image providing device provides a user with realistic and natural past-experience simulation through stereoscopic photographs. Specifically, feature-point extractors extract feature points from a foreground image and a background image, respectively. A stereoscopic matching module searches for pairs of feature points matching between the foreground image and the background image and obtains using the feature point pairs a transformation matrix for projecting the foreground image onto the background image. The transformation by the transformation matrix obtained by the matching unit is applied to foreground depth data, which is depth data of the foreground image. Lastly, depth based rendering is performed based on the transformed foreground depth data to obtain two or more viewpoint images corresponding to the foreground image.

Image providing device, image providing method, and image providing program for providing past-experience images

A playback device reads an application and a digital stream from a recording medium to execute the application with playback of the digital stream. The playback device includes a management unit operable to verify authenticity of the application by judging whether a disc root certificate is identical to a first root certificate, and an execution unit operable to execute the application if authenticity of the application is verified by the management unit. The playback device also includes a storage unit having a storage area that is specified by a file path that uses the provider ID and a hash value of a second root certificate, and a playback unit operable to play back the digital stream in accordance with the playlist information.

Application executing device, managing method, and program

Ocular strain is reduced for the viewer by reducing extreme changes of depth value occurring at stereoscopic scene jumps, dimension switches from 2D to 3D video, and the like. A playback device includes a video plane and a depth value memory for storing depth values of a plurality of stereoscopic video frames. The depth value memory stores the depth values of a plurality of frames, at least including a destination frame, and of a starting frame. When a request to switch from 2D to 3D video or to switch scenes within 3D video is received, switch timing control or destination frame depth value adjustment is performed so as to reduce the occurrence of extreme depth value changes and provide smooth switching.

Playback device for stereoscopic viewing, integrated circuit, and program

Inconsistency between a left-view video image and a right-view video image possibly occurs in a playback device having a function of switching between a monoscopic playback mode for monoscopically playing back video images and a stereoscopic playback mode for stereoscopically playing back video images. The present invention aims to prevent such inconsistency when switching from the monoscopic playback mode to the stereoscopic playback mode. Specifically, the present invention prevents the inconsistency by invalidating a rendering request which is Graphics#drawImage, copying a content stored in the left-view graphics plane to a right-view graphics plane, switching a graphics plane setting after the copying, and then removing prohibition of a rendering request which is StereoGraphics#drawImage.

Playback device that can play stereoscopic video, integrated circuit, playback method and program

A read unitreads a digital stream that includes a left-view video stream and a right-view video stream from a recording medium. A mode storage unitstores either a 3D mode to show a user video frames in stereoscopic view or a 2D mode to show a user video frames in monoscopic view as a playback mode of the apparatus. A dimension determining unitdetermines whether the digital stream read from the recording medium supports 3D mode. When (i) the digital stream supports 3D mode and (ii) the current playback mode is 3D mode, a demultiplexerseparates the left-view video stream and the right-view video stream from the digital stream, and when condition (i) or (ii) is not met, the demultiplexerseparates either the left-view video stream or the right-view video stream from the digital stream.

Playback apparatus, integrated circuit, and playback method considering trickplay

A video plane generation unit decodes stream data into a pair of left-view and right-view video planes, and outputs the pair alternately in a 3D display mode and either of the pair repeatedly in a pseudo 2D display mode. An image plane generation unit generates a pair of left-view and right-view image planes having an OSD at different horizontal locations according to its depth to be perceived, and alternately output the pair of image planes. A pseudo 2D display control unit instructs the video plane generation unit to operate in the 3D display mode and the pseudo 2D display mode in periods where the image plane generation unit does not and does output the image planes, respectively. The adder unit combines a video plane and an image plane generated by the video plane generation unit and the image plane generation unit, respectively, onto a frame, and outputs the frame.

Stereoscopic video playback device and stereoscopic video display device

A recording mediumon which an index table, an operation mode object, and byte-code applications are recorded. The index table shows correspondence between one or more titles and one or more operation mode objects. The operation mode object includes an application management table and display rate initialization information. The application management table indicates a byte-code application to be started to a playback device when a title corresponding to the operation mode object is selected as a current title. The display rate initialization information indicates how to initialize a display rate of a display device connected to the playback device when the title corresponding to the operation mode object is selected as the current title.

Recording medium, reproduction device, integrated circuit, reproduction method, and program

A playback apparatus plays back video data recorded on a recording medium such as a BD-ROM. The playback apparatus includes (i) an interface in which a removable medium such as an SDRAM is inserted, (ii) a detection module detecting that the removable medium is inserted, and (iii) a virtual file system. The virtual file system is used if the removable medium is detected to be inserted, if additional content such as subtitles is recorded on the removable medium, and furthermore if the additional content is associated with the video data recorded on the BD-ROM, etc. The virtual file system dynamically combines the video data recorded on the BD-ROM, etc. and the additional content of the removable medium so as to play back a virtual package.

Reproduction device and program

A playback time axis of a video stream is composed of a plurality of frame periods. To overlay a rendered image with a stereoscopic video image to be displayed in the i-th frame period, a process of writing to a left-view plan memory and a process of writing to a right-view plane memory both need to be completed before the start of the i-th frame period. To simultaneously request the two rendering processes, the argument of an application interface includes a pair of specifications, one specifying writing to the left-view plane memory and the other specifying writing to the right-view plane memory.

Playback device, playback method and program

In the Local Storage (), a plurality of files, merge management information which specifies a file out of the plurality of files to be used in combination with what is recorded on a Read-Only recording medium, and signature information used for judging the authenticity of the merge management information. The Virtual File System unit () judges the authenticity of the merge management information based on the signature information. In the case where the merge management information is judged to be authentic, the Virtual File System unit () generates package information which indicates a new file structure obtained by adding the file specified by the merge management information to the file structure of the Read-Only recording medium.

Playback apparatus and playback method

In performing stereoscopic view, a shift information memory () stores, as a number of pixel lengths, an offset indicating how far in a right direction or a left direction to move coordinates of pixels to realize stereoscopic view. When realizing stereoscopic view, a plane shift engine () moves the coordinates of image data in a graphics plane in the right direction or the left direction by the number of pixel lengths indicated by the offset. When a scale of video data targeted for stereoscopic view is changed by a basic graphics plane (), a shift distance of pixel coordinates by the plane shift engine () is based on a number of pixel lengths obtained by multiplying the offset by a changed scaling factor in the horizontal direction.

Playback apparatus, playback method, and program for performing stereoscopic playback

The playback apparatus realizes stereoscopic viewing by overlaying planar or stereoscopic graphics over stereoscopic video in a way that reduces eye strain using following method in abstract: A graphics plane holds therein data composed of graphics data. A shift engine shifts, in a case when a composition unit composites the graphics data with a left-view video frame, coordinates of each of the pixels is shifted in a first horizontal direction, and in a case when the composition unit composites the graphics data with a right-view video frame, coordinates of each of the pixels is shifted in a second horizontal direction that is opposite to the first direction.

Play back apparatus, playback method and program for playing back 3D video

In performing stereoscopic view, a shift information memory stores, as a number of pixel lengths, an offset indicating how far in a right direction or a left direction to move coordinates of pixels to realize stereoscopic view. When realizing stereoscopic view, a plane shift engine moves the coordinates of image data in a graphics plane in the right direction or the left direction by the number of pixel lengths indicated by the offset. When a scale of video data targeted for stereoscopic view is changed by a basic graphics plane, a shift distance of pixel coordinates by the plane shift engine is based on a number of pixel lengths obtained by multiplying the offset by a changed scaling factor in the horizontal direction.

Reproduction device, reproduction method, and program for stereoscopic reproduction

A BD-ROM stores a disc root certificate that is issued by a root certificate authority and assigned to the disc medium. An application manager acquires a hash value from the disc root certificated and verifies the authenticity of an application by using the hash value. If the authenticity is verified, a virtual machine executes the application. A local storage has a plurality of domain areas. From among the plurality of domain areas, a security manager allocates to the application a domain area that corresponds to the hash value.

The reading unit reads an application program, image data, a video stream, and an application management file from a recording medium. The virtual machine unit executes the application program. The memory unit includes an image data area for storing the image data. The playback unit plays back video data with use of the image data and the video stream in accordance with the application program. The management unit, in accordance with the application management file, instructs the virtual machine unit to start and terminate the application program and instructs the memory unit to change the image data area. Before instructing the memory unit to change the image data area, the management unit causes the virtual machine unit to forcibly terminate the application program even when the application management file specifies the continuous execution of the application program.

Growing community of inventors

Osaka, Japan

Germano Leichsenring