摘要:
The invention relates to a digital video recorder and to a method for recording DVB data. A program association table comprising program numbers and assigned program map table packet identifiers are recorded. A program map table packet being accessible by means of its assigned packet identifier is also recorded. A data stream type is provided in the program map table and a data stream type packet identifier is assigned to the data stream type.
摘要:
For the creation and self-organization of peer-groups the JXTA protocol may be used, which includes messages such as peer or peer-group advertisements and services such as the discovery service. Conventional peer-groups of this type are static and need restart after any modification, e.g. a new service. A method for dynamically managing hardware and/or software elements, e.g. services, utilized and/or offered by such peer-groups comprises detecting a change within a peer-group (OZ), creating a new peer-group identifier, publishing within the peer-group a first peer-group advertisement message (PGA1) that includes the current and the new peer-group identifier and pointers to current services including the detected modification, accepting the new peer-group identifier by the other peer-group members, and publishing a second peer-group advertisement message (PGA2) in the superordinate peer-group (NPG), wherein both advertisement messages may be identical. Thus, peer-groups may operate continuously while peers modify, add or delete services.
摘要:
When updating a local copy of metadata, first change history data of metadata are read from an optical storage medium. Second change history data of the metadata are read from a local storage of an optical storage medium playback and/or recording device. If the first and second change history data are different a change attribute is read from the optical storage medium and an update operation of the metadata stored in the local storage or an update operation in the optical storage medium is determined depending on the change attribute.
摘要:
Networks, particularly home networks, may be implemented using peer-to-peer technology. To relieve the user from administrative tasks, some configuration routines for such networks may be automated. Therefore a peer-group (OZ_20,OZ_21) selects one of its peers as negotiation peer (N21,N23), having the task to communicate with single other peers or negotiation peers from other peer-groups. When adding or removing single peers, or merging or splitting peer-groups, the group label (Z_ID A ,Z_ID B ) is usually modified. But it may be advantageous to keep the group label, especially if that label is known to other peer-groups. If a new peer-group in a peer-to-peer network is created by merging or splitting other peer-groups, a method for selecting a group label for the new peer-group comprises determining a negotiation peer, exchanging information between the negotiation peers in the case of merging, comparing features of the two peer-groups and based on the comparison assigning the label (Z_ID B ) of one of the peer-groups to the new peer-group (OZ_2).
摘要:
The invention relates to assigning a first absolute time value to an entry point, the entry point being located at a first position in a data stream sequence, the data stream having data packets with relative time stamps. A second absolute time value is provided for a second position of the data stream sequence. The absolute time value is determined for the entry point based on the second absolute time value and the relative time stamps of data packets between the first and second positions.
摘要:
Current peer-to-peer (P2P) systems are well defined for messaging and collaboration of peers running the same proprietary software and protocols, e.g. Kazaa or EDonkey. The generic framework JXTA for P2P computing provides various peer-group mechanisms and may address different applications, but provides no convenient method for exchanging messages between different peer-groups. The invention discloses a bridging concept and a delegate concept to establish communication between a first and a second peer-group (OZ1,OZ2), including the steps of a first peer being either a member (Node_ID3) of the first peer-group (OZ1) or a secondary peer (H) relating to a primary peer (G), wherein the primary peer (G) is a member of the first peer-group (OZ1), sending a message to the second peer-group (OZ2); a second peer (Node_ID2) being a member of the second peer-group (OZ2) receiving said message, detecting credentials of first peer and first peer-group (OZ1), and detecting whether a connection is allowed; and if so, granting the first peer (Node_ID3,H) membership with the second peer-group (OZ2).
摘要:
A logical quality-of-service (QoS) management method for peer-to-peer networks (OZ) uses a special group service for QoS management within peer-groups. This group service determines and assigns a budget per time unit for each peer. Such time unit may be in the range of milliseconds or few seconds. It may also determine a group budget for the peer-group. While a peer (N1,...,N6) uses bandwidth, i.e. while it sends or receives data, its budget is decreased. When a peer has exhausted its budget, it has to lower its priority for transferring or receiving data. Each peer is responsible for keeping its own budget. If a peer does not keep the conditions, other peers may have the right to deny the data transfer from that peer. The QoS service function is advertised in peer-group advertisement (PGA) messages.
摘要:
A distributed storage system able to support real-time recording of streaming data shall be provided. Therefore, on the basis of MXF files a data stream is packed into at least a first MXF file (1) and a second MXF file (2). First connection data (1 N ) are inserted into the first MXF file (1), wherein this first connection data (1 N ) points to the second MXF file (2). Furthermore, second connection data (2 L ) are inserted into the second MXF file (2), wherein the second connection data (2 L ) points to the first MXF file (1). These connection data inserted as metadata into the MXF files enable both seamless real-time stream recording and stream-able data playback.
摘要:
According to the invention every asset (metadata or essence) is labelled with a unique identifier and with the last action applied to this asset. A problem to be solved by the invention is to find a method for storing a recording, which includes storing the essence (A/V) of a recording on one storage medium and the metadata belonging to this recording on another storage medium.
摘要:
The invention comprises an application for recording and the playback of MPEG-2 transport-streams transmitted via DVB-systems with optical discs. Apart from audio- and video-signals, additional information (which describe the content of the DVB-multiplex) will also be transmitted in DVB-SI descriptors. These descriptors correspond to the incoming transport-stream-packets and can be used for comfortable features, like event-triggered start of a recording or automatic generation of play-lists.