Abstract: According to one embodiment, to implement video objects to be played back by a method different from an existing playback sequence, playlist information which is played back first is recorded when the medium stores an advanced content. The playlist information may be configured to include object mapping information which is included in each title and is mapped on the title timeline, playback information for each title described based on the timeline, and so on. The object mapping information may describe timings on the timeline to be loaded into a playback system for each predetermined information unit such as an application or object.

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: A design is made for recording and arrangement of application data so as to stably control the behavior of moving picture data based on application data and easily achieve special reproduction of moving picture data. Therefore, moving picture data encoded in a preset format is multiplexed with application data used to control the behavior of a reproduced picture of the moving picture data. Further, the basic process is provided to deal with a first file which contains a multiplexed stream separated by preset units and a second file containing the same data as the application data.

Abstract: This invention has as its object to provide more colorful menus and to improve interactiveness in contents playback from a recording medium. In an information recording medium having a data area including a management area and object area, the object area stores expanded video objects which undergo playback management for respective program chains, and advanced objects which are recorded independently of the expanded video objects. The management area stores a playback sequence which gives the playback conditions of the advanced objects. This playback sequence can include information used to update the playback sequence.

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: A data structure configures picture information in accordance with a predetermined format and is decoded and reproduced by an information reproducing apparatus. The data structure comprises a plurality of picture information on a predetermined unit by unit basis, the information being read and decoded by the information reproducing apparatus, and being reproduced to be a reproduction signal for displaying a picture together with a voice, and a plurality of application information read and executed by the information reproducing apparatus, whereby predetermined images are reproduced to be a reproduction signal superimposed and displayed on the reproduced picture and the reproduced images are configured to be inserted among a plurality of picture and voice information on the predetermined unit by unit basis.

Abstract: When one video image (e.g., second video image) is blended or synthesized to video image (e.g., main video image), time base correction is made between both video data. A video data processing apparatus comprising a first video generator generating a first video data having an arbitrary frame rate, a second video generator generating a second video data having an arbitrary frame rate different from the first video data, and a synchronization controller using video reproduction time managed by the first video generator as a reference time, and correcting video reproduction time of the second video generator shifted from the reference time by repeatedly using the second video data to obtain frame synchronization.

Abstract: A ROM stores a device name table which holds a plurality of names each including an expression that allows to recognize the installation location of a device and a device unique ID that allows to identify the device. In response to a user request, a control device displays, as a list of choices on a display device, the plurality of names held by the device name table. When a name is selected, the control device makes the name correspond to the device unique ID and stores them in the name management table of a RAM and transmits the name management table to a server connected through a home network.

Abstract: A video data recording/reproducing apparatus includes an input device, a data storage unit that stores the video data item input by the input device, a communication unit that executes communicates with an external unit via a network, a unit that moves one of a plurality of video data items stored in the data storage unit to the external unit, a unit that reproduces to-be-reproduced video data item from the data storage unit if the to-be-reproduced video data item is stored in the data storage unit, and a unit that executes a streaming process to reproduce a stream of the to-be-reproduced video data item that is transferred from the external unit while the stream of the to-be-reproduced video data item is being received by the communication unit, if the to-be-reproduced video data item is stored in the external unit.

Abstract: A wireless communication apparatus has a wireless communication device adapted to use a plurality of communication link levels for communication with an outside communication device, each communication link level has individual communication rate, and a memory adapted to store first link level changeover data and second link level changeover data. The first link level changeover data indicates first level of difficulty to change the communication link level, and the second link level changeover data indicates second level of difficulty to change the communication link level. The wireless communication apparatus also has a control unit adapted to change the communication link level in accordance with one of the first link level changeover data and the second link level changeover data.

Abstract: There is disclosed a protocol agent program including an LDAP protocol driver for acquiring information held by a proxy server which manages a local network disposed to provide a connection service to Internet. Moreover, the protocol agent program registers the information required by each network application program in a request information list, detects the proxy server, for example, at a predetermined interval based on the request information list, and distributes the information acquired from the detected proxy server to each network application program.

Abstract: After receiving a first packet from a personal computer, an access point on a shop side forms a second packet containing the first packet in its payload and transmits the formed second packet to an access point on a head office side via the Internet. After receiving the second packet from the Internet, the access point on the head office side extracts from the payload of the received second packet the first packet that was formed by the access point on the shop side and outputs the extracted first packet to a server computer.

Abstract: This invention provides a communication network system capable of obtaining setting information used in a network application program. This invention acquires setting information by using a protocol in which the option field of DHCP (Dynamic Host Configuration Protocol) contains a first field of 2 bytes or more which stores an identification number representing the type of setting information, and a second field which stores the setting information.

Abstract: The invention relates to an access point having a function of checking application/non-application of an encryption function in each of radio communication packets, and determining a communication service for a packet on the basis of the application/non-application. The access point has a radio LAN packet process section having a function of checking application/non-application of WEP to a packet received from a radio terminal.

Abstract: A wireless terminal connects, via wireless communication, with an AP having a relay function between a wireless LAN and other networks. The wireless terminal acquires from the AP configuration information required to configure the wireless terminal to use a particular network environment. The wireless terminal may further acquire from the AP configuration information required to configure particular software applications for use in a particular network environment. When connecting with the AP, the wireless terminal can automatically acquire the configuration information previously stored in a database. The configuration information includes, for example, configuration information required for the wireless terminal to connect with a wired LAN and configuration information required by particular software applications to run in the wired LAN environment.

Abstract: A device authentication unit authenticates a wireless LAN terminal in response to a request from a connection control unit, and requests the connection control unit to send a device authentication result to a wireless LAN terminal. The connection control unit executes a procedure for device authentication between a wireless LAN control unit and the device authentication unit, and monitors a packet transmitted between the wireless LAN control unit and a bridge control unit. The connection control unit determines whether or not a wireless LAN terminal is already authenticated, on the basis of the MAC (Media Access Control) address assigned to the terminal, thereby transferring only acceptable packets, and braking off the other packets.

Abstract: Network setups for a plurality of wireless devices are registered together with their priority order, and a connection request is output based on the priority order. If a response signal to the output connection request cannot be received, a connection request is output to the wireless device with the second highest priority. When a response signal to the connection request can be received, an authentication process is performed with that wireless device, and a network setup with the wireless device is established. When a communication with that wireless device is disabled, the aforementioned process is executed again to detect a device with which communication connection can be established.

Abstract: An electronic method and apparatus for a communication system coupling a target device and a plurality of accessing devices to a bus. One of the plurality of accessing devices requests access to the target device. The target device then acquires GUID data from the requesting device. The acquired GUID data is compared to preliminary GUID data stored in the target device. When the acquired GUID data coincides with the preliminary GUID data, the target device releases access allowing function data to the accessing device. On the other hand, when the acquired GUID data does not coincide with the preliminary GUID data, the target electronic apparatus releases access prohibiting function data to the accessing device.

Abstract: PC 1, PC 2, HDD, and NIC are connected to each other via a bus cable. In addition, PC 1 and PC 2 both include functions for controlling the HDD and NIC, and can operate as initiators of the HDD and NIC. On the other hand, the HDD and NIC both operate as target devices of the PC 1 and PC 2. According to the present invention, a function for switching a function provided for each of the PC 1 and PC 2 that are initiators is incorporated in the HDD and NIC that are target devices of the invention.