Abstract: According to one embodiment, video objects to be played back by a method different from an existing playback sequence with respect to contents recorded on a read-only information storage medium are implemented. The medium is configured to store startup information including one or more pieces of playlist information to be played back first when the medium stores an advanced content, and information used to determine which one of the pieces of playlist information is to be adopted.

Abstract: In a mutual authentication method for use between a recording apparatus which records copied contents on a recording medium having an arithmetic processing function, and the recording medium, the method includes a step of storing in the recording medium at least first information which depends on the recording medium, and second information which is to be shared by the recording apparatus in executing mutual authentication with the recording apparatus and depends on the recording medium, and a step of generating by the recording apparatus authentication information used in mutual authentication with the recording medium on the basis of the first information obtained from the recording medium, and executing mutual authentication between the recording apparatus and the recording medium using the generated authentication information and the second information.

Abstract: A data area of an information storage medium according to an embodiment of the invention has a video data recording area including an area for recording expanded video objects in addition to a management area, and an advanced content recording area including information different from the recording content of this area. The advanced content recording area has a playback sequence information recording area that stores playback sequence information which can arbitrarily define a playback sequence upon playing back a video picture of the expanded video objects using a markup language.

Abstract: This invention has as its object to provide colorful menus, and improve interactiveness in content playback from an information storage medium. In an information storage medium including a management area and object areas, the object area stores an expanded video object (in HDVTS) which undergoes playback management by a logical unit called a program chain, and/or an advanced object (in AHDVTS) which undergoes playback control using a markup language. Management information (HDVMGI) in the management area includes information indicating one or both of the expanded video object and the advanced object as the object stored in the object area.

Abstract: An information processing apparatus includes a first bus to transfer various data. A first processor is provided to manage, as a file, data recorded in the storage device. A receiver is provided to receive externally supplied streaming data. A second bus is provided to transfer the streaming data received by the receiver. A third bus is electrically connected to the storage device. A second processor is electrically connected to the first bus, the second bus, and the third bus. Streaming data from the receiver via the second bus is stored in the storage device via the third bus. File management information from the first processor via the first bus is also stored in the storage device, in response to an access request from the first processor via the first bus.

Abstract: A content processing system for use in an electronic apparatus includes a unit for acquiring first revocation list information corresponding to a first media type, and a unit for recording the first revocation list information on a recording medium of a second media type. The recorded first revocation list information is used in authentication between the electronic apparatus and the recording medium of the second media type.

Abstract: A contents managing method of regulating a number of copied contents storable on a storage medium includes giving a predetermined number of copyable contents for each content, recording the copied contents on the storage medium upon reception of an instruction for copy recording on the storage medium when there is a remainder in the number of copyable contents, decrementing the number of copyable contents by “1” every time one copied content is recorded on the storage medium at a time of recording, and incrementing the number of copyable contents by “1” every time one copied content is erased from the storage medium upon reception of an instruction to erase the copied contents from the storage medium.

Abstract: A contents managing method of regulating a number of copied contents storable on a storage medium includes giving a predetermined number of copyable contents for each content, recording the copied contents on the storage medium upon reception of an instruction for copy recording on the storage medium when there is a remainder in the number of copyable contents, decrementing the number of copyable contents by “1” every time one copied content is recorded on the storage medium at a time of recording, and incrementing the number of copyable contents by “1” every time one copied content is erased from the storage medium upon reception of an instruction to erase the copied contents from the storage medium.

Abstract: Two transfer modes of a band-guaranteed cycle and an event-driven type asynchronous cycle are defined for a multimedia bus. In the band-guaranteed cycle, stream data is transferred between nodes, to which the same channel number is assigned, in peer-to-peer mode using a reserved band for each cycle time. If the same channel number is assigned to a plurality of receiver nodes, a multi-cast transfer can be achieved by the band-guaranteed cycle. The multi-cast transfer using the band-guaranteed cycle can be stopped even in response to an instruction from any receiver node, and a buffer of each receiver node can be prevented from overflowing.

Abstract: A CPU module, satellite or digital TV tuner, MPEG2 decoder, and DVD-RAM drives have authenticators for making device authentication, key exchange, and the like. These authenticators hold authentication data (authentication formats) of the corresponding function modules. By exchanging the authentication formats between devices which are to authenticate each other, authentication can be done in units of function modules.

Abstract: This invention enables the digital broadcast receiving section to restore the reception timing even in a system incapable of guaranteeing the real-time feature of digital broadcast data as far as the 1394 Link. The digital broadcast signal received by the RF section and tuner section is restored to ATM cells at the packeting section. The ATM cells are then sent to the time stamp adding section, which adds the arrival time to the ATM cells. The CPU extracts, as a time stamp, the arrival time of the first ATM cell in each transport packet and creates a 4-byte source packet header on the basis of the value of the arrival time and the value of the CTR in the 1394 Link.

Abstract: A power control driver of a BIOS has a function of changing a frequency of clock supplied to a CPU. According to the function of the power control driver, it is possible to set a normal mode for showing the CPU capability to the maximum and a power saving mode for preferentially taking power saving rather than the CPU capability. A power control utility program carries out the following power saving control. The program shifts a system to the normal mode when an AV application program operating an encoder and a decoder required for showing the CPU capability to the maximum is operating. In addition, the program shifts the system to the power saving mode when the program is not operating even if application programs other than the program are operating.

Abstract: A multimedia bus is an internal bus for which two transfer modes, a band-guaranteed cycle and an event-driven type asynchronous (async) cycle, are defined. In the band-guaranteed cycle, stream data is transferred between nodes in peer-to-peer mode by using a reserved band for each cycle time. There are three ways to control the band-guaranteed cycle using the reserved band cycle: (1) flow control for stopping data transmission in a reserved band cycle under the control of a receiver node, (2) control for executing a stream access in the async cycle and (3) control for accepting the async cycle even during the reserved band cycle. This can permit data transfer between nodes on the internal bus in peer-to-peer mode, thereby improving the performance of a system which deals with both an AV stream and computer data.

Abstract: An information processing apparatus includes a first bus to transfer various data. A first processor is provided to manage, as a file, data recorded in the storage device. A receiver is provided to receive externally supplied streaming data. A second bus is provided to transfer the streaming data received by the receiver. A third bus is electrically connected to the storage device. A second processor is electrically connected to the first bus, the second bus, and the third bus. Streaming data from the receiver via the second bus is stored in the storage device via the third bus. File management information from the first processor via the first bus is also stored in the storage device, in response to an access request from the first processor via the first bus.

Abstract: A data processing system includes a bus, a plurality of devices connected to the bus, and a unit for executing data transfer between at least two of the plurality of devices via the bus, using one of a first bus cycle mode that enables data transfer with handshaking operation therebetween and a second bus cycle mode that enables stream data transfer without handshaking operation therebetween.

Abstract: An AV function section is provided with a standby mode serving to reduce power consumption during standby. An embedded controller provides such control as shifts or recovers the AV function section to or from the standby mode. Further, a network processor accepts, via a network such as a wireless LAN, a command causing the AV function section to shift to or recover from the standby mode. On the basis of this command, the network processor instructs, via a control signal line, the embedded controller to shift or recover the AV function section to or from the standby mode.

Abstract: A personal computer is connected to a 1394/LAN bridge adapter via a 1394 bus and is connected to a LAN via the 1394 bus and the 1394/LAN bridge adapter. When receiving a remote activation packet from the LAN, the 1394/LAN bridge adapter converts the received packet into a Link-on packet and transmits this Link-on packet to the computer via the 1394 bus. The computer uses the reception of the Link-on packet from the 1394 bus as a cause of generating a wake up event and thereby returns to an operation state when receiving the Link-on packet. Thus, the computer can be remotely activated from the LAN when the computer is connected to the LAN via a serial bus.