摘要:
A playback apparatus for playing a digital stream in conjunction with an application includes a package management unit operable to generate package information by merging files recorded on a first recording medium and a second recording medium, in accordance with merge management information, and a selection unit operable to detect a plurality of playable titles from the package information, and select one of the detected titles as a current title. After the application requests the package management unit to update the merge management information, by specifying new merge management information, the package management unit changes a file referenced from the newly specified merge management information to read-only before updating the package information, and at a point at which digital stream playback stops due to a current title change by the selection unit, the package management unit generates new package information by combining files recorded on the first and second recording media, in accordance with the newly specified merge management information.
摘要:
In the Local Storage (18), 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 (38) 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 (38) 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.
摘要:
The present invention is the playback apparatus 400 for (i) mounting thereon the BD-ROM 200 in which a plurality of data groups and an application program that refers to each of the data groups are stored and (ii) playing back each of the data groups by executing the application program. The playback apparatus 400 comprises: the playback processing unit 412 operable to control the execution of the application program; the network IF unit 419 operable to obtain, from an external server including therein one or more alternative data groups, an alternative data group to replace part of the data groups; and the HDD unit 418 that stores therein correspondence information showing a correspondence between a storage location where on an internal recording medium the alternative data group is stored and a storage location where on the external recording medium the part of the data groups to be replaced. Here, at a time when the application program in execution reads a data group being referred to, the playback processing unit 412 (i) judges based on the correspondence information whether an alternative data group for replacing the data group being referred to exists on the internal recording medium, and (ii) specifies, as a data retrieve destination, a storage location of the alternative data group indicated by the correspondence information when the judgment is affirmative.
摘要:
An access control device is provided which controls an access right with respect to a plurality of electronic devices in a network for each combination of electronic devices. An authority information generating section (106) generates authority information which is used when an electronic device (200) accesses an application on an electronic device (300). A permission information generating section (107) generates permission information which is information about whether or not the electronic device (300) permits an access request from the electronic device (200), in relation with the authority information. An access information storing section (101) stores the authority information and the permission information. A transmission control section (108) transmits via the communication section (103) the authority information to the electronic device (200) and the permission information to the electronic device (300).
摘要:
Terminal devices and a method of transferring sets of transmission document information in a network system between terminal devices such as portable devices which can be grouped together into a plurality of different groups is provided. A terminal device can store capability information relative to a specific type of data that can be received and outputted. The terminal device can receive an inquiry from another terminal device as to the capability information and can transmit the capability information when appropriate to the inquiring terminal device. Various types of capability information can be stored, depending upon the particular capabilities of the terminal device such as picture data, audio data and character data to enable the terminal device to be an e-mail terminal.
摘要:
An information transmission control apparatus for relaying information that allows a receiver's reply, from an information provider apparatus to a plurality of information reception apparatuses. The information transmission control apparatus sets different delay time for transmitting the information to each destination, based on random numbers or instructions from the information provider apparatus. Each time delay time for any of the destinations has elapsed, the information transmission control apparatus transmits the information to one or more information reception apparatuses that are the destination.
摘要:
A program execution device is a device for executing an application program having at least one class including an execution code created by an object directivity language. The program execution device includes a first execution device having a memory and a processor and a tamper-resistant second execution device having a memory and a processor. When a class is executed, a loader loads an execution code of the class in the memory of the second execution device and loads a portion of the class other than the execution code loaded in the memory of the second execution device, in the memory of the first execution device.
摘要:
A playback apparatus plays back video data recorded on a recording medium such as a BD-ROM. The playback apparatus includes an interface in which a removable medium such as an SDRAM can be inserted, a detection module that detects that the removable medium is inserted, and 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 is used for dynamically combining 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.
摘要:
The present invention is the playback apparatus 400 for (i) mounting thereon the BD-ROM 200 in which a plurality of data groups and an application program that refers to each of the data groups are stored and (ii) playing back each of the data groups by executing the application program. The playback apparatus 400 comprises: the playback processing unit 412 operable to control the execution of the application program; the network IF unit 419 operable to obtain, from an external server including therein one or more alternative data groups, an alternative data group to replace part of the data groups; and the HDD unit 418 that stores therein correspondence information showing a correspondence between a storage location where on an internal recording medium the alternative data group is stored and a storage location where on the external recording medium the part of the data groups to be replaced. Here, at a time when the application program in execution reads a data group being referred to, the playback processing unit 412 (i) judges based on the correspondence information whether an alternative data group for replacing the data group being referred to exists on the internal recording medium, and (ii) specifies, as a data retrieve destination, a storage location of the alternative data group indicated by the correspondence information when the judgment is affirmative.
摘要:
An access control device controls an access right with respect to a plurality of electronic devices in a network for each combination of electronic devices. An authority information generating section generates authority information which is used when an electronic device accesses an application on an electronic device. A permission information generating section generates permission information which is information about whether or not the electronic device permits an access request from the electronic device, in relation with the authority information. An access information storing section stores the authority information and the permission information. A transmission control section transmits via the communication section the authority information to the electronic device and the permission information to the electronic device.