Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Tomokazu Kanamaru

Germano Leichsenring

Keiichi Tanaka

Masahiro Oashi

Masafumi Okubo

Motoji Ohmori

Masao Nonaka

Kazuhiko Yamauchi

Soichiro Fujioka

Hidetaka Ohto

Yoshiaki Iwata

Tomonori Nakamura

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

A BD-ROM has recorded thereon: a plurality of subtitle streams each configured for playback in sync with a video stream; and PlayList information. The PlayList information includes PlayItem information and a display method flag. The PlayItem information defines a playback section with information indicating In_time and Out_time of a playback time axis of the video stream and includes a stream information table. The display method flag indicates whether or not control according to a subtitle display method is valid. The stream information table specifies to, a playback apparatus, one of the subtitle streams to be selected if the control according to the subtitle display method is valid.

Recording medium, playback apparatus, recording apparatus, playback method, recording method, and program

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 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

When a plurality of AVClips recorded on a BD-ROM and Local Storageconstitute one stream sequence, a Playback Control Enginestarts playback if at least one AVClip of the stream sequence is in an enable status, even when the stream sequence also includes an AVClip which is in a disable status. While one AVClip is being played back, a Virtual FileSystem unitchanges a remaining AVClip to the enable status of being recognizable by the Playback Control Engineor the disable status of being unrecognizable by the Playback Control Engine, according to a method call by an application.

Reproducer, program, and reproducing method

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.

An integrated circuit includes a storage that stores a module that has a function of a virtual machine for executing an application recorded on a recording medium. The integrated circuit also includes a central processing unit that executes the module to cause the virtual machine to function and a decoder, that is distinct from the central processing unit, that decodes a video stream and an audio stream that are included in digital streams stored on a recording media. When the central processing unit executes the module, a package manager manages status information of the digital streams. If at least one of the digital streams is in an enable status, the decoder decodes the digital stream. When the decoder decodes the digital stream, the package manager changes the status information of another digital stream to an enable status or a disable status according to a request from the application.

Integrated circuit or use in playback apparatus

A BD-ROM stores a disc root certificatethat is issued by a root certificate authority and assigned to the disc medium. An application mangeracquires a hash value from the disc root certificateand verifies the authenticity of an application by using the hash value. If the authenticity is verified, the virtual machineexecutes the application. A local storagehas a plurality of domain areas. Form among the plurality of domain areas, a security mangerallocates to the application a domain area that corresponds to the hash value.

A processing apparatus is connected to a network and has a content recording/playback function. The processing apparatus stores therein, in correspondence, (i) statuses of the recording/playback process and (ii) computer virus-handling processes to be performed if a detection unit detects a computer virus. If the computer virus is detected, the processing apparatus performs one of the computer virus-handling processes in correspondence with one of the statuses of the recording/playback processes.

Processor and processing apparatus performing virus protection

A service program recorded on a portable medium is executed directly or after being installed temporarily in a long-term storage apparatus. A program execution device prevents unrestricted execution of the program when the portable medium is not inserted in the device, from the viewpoint of managing resource access to the device. The program is attached with permission information indicating resource access rights. According to an acquisition route of the program to be executed, first permission information and second permission information indicating different access rights are applied for executing the program.

Program execution device and program execution method

A loader section () for converting a program from a class file to a runtime execution format, a runtime saving section () for performing a runtime saving process by which a runtime execution format is converted to a temporary runtime execution format, a temporary runtime execution format storing section () for storing a temporary runtime execution format, and a post-loader section () for performing a post-loader process by which a temporary runtime execution format is converted to a runtime execution format are included, and determination is made whether or not there is a temporary runtime execution format in the temporary runtime execution format storing section when a start-up of a program is instructed, the loader section is requested to perform conversion to a runtime execution format if there is none, and the post-loader section is requested to perform conversion to a runtime execution format if there is any. As a result, it is possible to reduce a start-up time of a downloaded program in a program distribution service.

Growing community of inventors

Osaka, Japan

Tomokazu Kanamaru