73results about How to "Efficient use of bandwidth" patented technology

A switching apparatus is disclosed that employs a relatively simple and inexpensive switching matrix, but which avoids interruption of existing connections when connections are added or removed. The switching matrix switches errorlessly by controlling the point in time at which switching occurs. Using such a technique, switching can be performed without disturbing the connections already configured in the switching matrix, and so is referred to herein as being non-blocking. Optionally, the incoming data can be rearranged to provide a larger window of time in which the switching matrix can be switched. In the case of a switch using an optical backplane, this also allows more time for various components of the system (e.g., clock/data recovery units) to re-acquire lock. The switching apparatus includes a switching matrix and control circuitry. The switching matrix has a matrix input, a control input and a number of matrix outputs, and is configured to receive an information stream at the matrix input. The information stream includes a number of portions, while the control circuitry has a control output coupled to the control input. The control circuitry is configured to initially configure the switching matrix to output the information stream at a one of the matrix outputs and to subsequently configure the switching matrix to output the information stream at another of the matrix outputs during a period of time during which the one of the portions is transiting the switching matrix.

A method and apparatus for use in conjunction with a “push” approach to multimedia content delivery is disclosed. Content that is received by the client is stored in memory. Items of content that are of interest to the user are “preserved” in memory by the user. Feedback relating, among other things, to which items of content have been preserved is returned to the server. Additional content, which is based on the user feedback, is sent to the client. The additional content overwrites items of content that have not been preserved by the user.

A mobile telecommunications network includes a core and a radio access network having a radio for wireless communication with mobile terminals registered with the network, wherein the radio access network includes a controller operable to control the use of network resources by the mobile terminals. The controller may include an application programming interface, API, which provides a consistent interface to a multiplicity of applications hosted on the control mean. The controller may be provided at an access node site and/or a gateway site.

A method of operating an network is described. The network includes a number of nodes connected by a number of links. A method according to the present invention provisions a virtual path between a first and a second one of the plurality of nodes by: identifying the first and the second nodes, discovering a physical path from the first node to the second node, and establishing the virtual path. The method discovers a physical path from the first node to the second node by automatically identifying nodes forming the physical path. The method establishes the virtual path by configuring a set of connections between the nodes forming the physical path.

Disclosed is a method and apparatus for transmitting video signals from a remote computer to a local computer over a network such as a LAN, WAN, the Internet, etc. The method receives and digitizes signals from the remote computer, conditions the signals, and compresses the signals for efficient transmission over the network connection. The method and apparatus also utilizes a cache of recently transmitted video to further decrease the data needed for transmission of the signals. The conditioning and caching use frame buffers of video signals that are divided into cells to reduce noise in the image, and to limit the portions of the video signals that must be transmitted. The present invention maybe used in conjunction with a keyboard video mouse switch to enable a user at the local computer to select one of a number of remote devices for remote operation.

Various embodiments relate to systems and methods for simultaneously switching input image streams to output devices, while providing optional image processing functions on the image streams. Certain embodiments may provide vision systems and methods suitable for use in vehicles, particularly windowless vehicles, such as armored ground vehicles, submerged watercraft, and spacecraft. Some embodiments may enable sharing of image streams (e.g., with one or more other vehicles), generation of panoramic views (e.g., from various camera feeds), intelligent encoding of image streams, and implementation of security features based on image streams.

A method and system for sharing over-allocated bandwidth between different classes of service in a wireless network. Traffic is transmitted for a first service class in excess of bandwidth allocated to the first service class using unused bandwidth allocated to a second class. After transmitting traffic for the first service class in excess of bandwidth allocated to the first service class using unused bandwidth allocated to a second class, traffic for a third service class is transmitted in unused bandwidth remaining in the second service class.

In a ring network, a sending host and a receiving node performing multi-cast communication share entry information indicating the node related to the he multi-cast communication. Moreover, the sending node and the receiving node broadcast the entry information on the ring network and share topology information related to a positional relationship on the ring network. Moreover, the sending node references the entry information and the topology information so as to determine the sending direction of the information to be multicast and transmits the information by multicast in the transmission direction. Furthermore, the aforementioned receiving node discards the information when no other receiving node receiving the information in present in the transmission direction.

A system and method for upgrading service class of a connection in a wireless network includes identifying a congested CoS in a sector of a wireless network. Bandwidth availability in the sector is determined at an enhanced CoS in relation to the congested CoS. A communications session is selected in the congested CoS for upgrading. The communications session is upgraded to the enhanced CoS.

A method in accordance with the present invention comprises identifying a M-bit multicast address and deriving a N-bit PON port identifier from the M-bit multicast address. Identifying the M-bit multicast address and deriving the N-bit PON port identifier are performed at an Optical Line Terminal (OLT) of a Passive Optical Network (PON). The N-bit PON port identifier has fewer bits than the M-bit multicast address. Deriving the N-bit PON port identifier includes mapping N-1 Least Significant Bits (LSB) of the M-bit multicast address to N-1 LSB of the N-bit PON port identifier and setting a 1 Most Significant Bit (MSB) of the N-bit PON port identifier to a bit setting that designates the N-bit PON port identifier as being a multicast port identifier.

A server system includes a plurality of server nodes and a management module. Each server node includes a node control module that gathers operation state information of a corresponding server node. The node control module communicates with the management module through an uplink data channel. The operation state information of the corresponding server node is packaged into a data packet by each node control module. The data packet is automatically transferred to the management module by the node control module through the uplink data channel according to a default value. When the management module receives the data packet, the management module analyzes the data packet so as to control operation of the server node according to the operation state information of the server node.

Methods for cryptographic synchronization of data packets. A roll-over counter (ROC) value is periodically appended to and transmitted with a data packet when a function of the packet sequence number equals a predetermined value. The ROC effectively synchronizes the cryptographic transformation of the data packets. Although the disclosed methods are generally applicable to many transmission protocols, they are particularly adaptable for use in systems wherein the data packets are transmitted to a receiver using the Secure Real-Time Transport Protocol (SRTP) as defined in Internet Engineering Task Force (IETF) Request for Comments (RFC) 3711.

The present invention provides for a method and system for allowing non-trusted partitions in large scale computer system to safely interrupt a processor without the risk of corruption or loss of interconnect bandwidth, and without the need for inefficient hardwiring. In operation code preferably located outside of the central processor, interrupts coming from outside the partition into specific addresses for determination of allowability into the partition.

A MUD enabled cable modem that provides efficient use of cable television network bandwidth in the presence of interference and noise is disclosed. The modem design provides for compatibility with existing network hardware and protocols so that bandwidth efficient modems configured in accordance with the principles of the present invention may be added to the network without removing installed hardware and software. A bandwidth efficient modem in the cable network head-end increases reverse link capacity from the terminals to the head end, while bandwidth efficient modems in cable network terminals increases forward link capacity from the head end to the terminals. Bidirectional bandwidth efficiency is thereby enabled.

An optical packet switching apparatus includes an optical coupler, an optical switch unit, and an optical switch control unit. The optical switch control unit includes an optical-to-electrical converter, a serial/parallel converter, an arrangement detector, a rearrangement unit, a frame synchronization unit, a route detector, a control signal generator, and an adjustment unit for adjusting the timing with which to output an optical switch control signal to the optical switch unit, based on arrangement information on a frame synchronization pattern fed from the arrangement detector.

A transmission device which transmits a packet to a destination transmission device through an asynchronous network, the packet accommodating a plurality of time division multiplexing (TDM) channels, includes: an unused-channel information storage section for storing unused-channel information on an unused one of a predetermined number of TDM channels; and an unused channel deletion section for deleting an unused channel from the predetermined number of TDM channels accommodated in a received packet by referring to the unused-channel information, to generate a compressed packet to transmit to the destination transmission device.