31 results about "Audio Video Bridging" patented technology

A network communication system includes one or more talkers that may communicate data streams to one or more listeners over a network, such as an Ethernet Audio / Video Bridging network. Before transmitting a new data stream, a talker may request a reservation for bandwidth through a controller that is configured to manage and / or control the flow of data streams over the network. If there is not enough bandwidth, then the controller may determine whether any existing data streams may be transmitted at lower bandwidths to make available enough bandwidth for the new data stream. Alternatively, the controller may determine whether any existing data streams having lower priorities than the new data stream may be terminated to make available enough bandwidth for the new data stream.

Aspects of a method and system for managing an energy efficient network utilizing Audio Video Bridging are provided. In this regard, an Audio Video Bridging timeslot may be designated for handling an energy efficient networking (EEN) transaction and the EEN transaction may be performed during the designated timeslot. Exemplary EEN transactions comprise scheduling a data rate transition, transitioning to a different data rate, training a link partner, and exchanging training related information. It may be determined whether the timeslot may be reserved for conveying an AVB stream prior to designating the time slot for an EEN transaction. In instances that the timeslot may be unreserved, the timeslot may be reserved for EEN transaction(s). Information exchanged during the designated timeslot may enable scheduling a data rate transition and / or training on a network link. In this regard, a subsequent timeslot may be designated for the data rate transition and / or the training.

Aspects of a method and system for a centralized vehicular electronics system utilizing Ethernet with audio video bridging are provided. In this regard, electronic devices in a vehicle may be communicatively coupled via one or more Ethernet links and information may be communicated between the electronic devices over the Ethernet link(s) utilizing audio video bridging. At least one of multimedia, control, diagnostic, and sensory information between the electronic devices. Accordingly, resources on the one or more Ethernet links may be reserved via AVB to give priority to one of multimedia, control, diagnostic, and sensory information. Information communicated between the devices may be secured utilizing MACsec and related protocols. The electronic devices may comprise two or more network ports and may be enabled to forward packets between the two or more ports. The Ethernet links may comprise optical and / or copper cabling.

Communication devices may determine routes for packets based on packet marking, routing parameters and / or costs associated with routes. A route may be selected and the packets may be communicated via the selected route. The parameters may comprise service class, real time compression, packet preemption, quality measurements, tier bypass and / or power usage information. The costs may comprise capacity, efficiency and / or performance information for power usage, bandwidth, memory and / or processing. The marking may comprise traffic type, user device capabilities, service class, quality measurements, latency requirements and / or power usage information. Endpoint devices, software applications and / or service providers may insert the marking into packets. Routes may be determined and / or selected based on shortest path bridging, audio video bridging, the marking, the routing parameters and / or the costs. Parameters and / or costs may be received and / or discovered from communication devices. Packets and / or the marking may be parsed and / or inspected. Costs may be based on routing parameters.

Aspects of a method and system for implementing redundancy for streaming data in audio video bridging networks are provided. Network resources may be reserved over a plurality of network paths. Reserved resources may be utilized for the transmission and / or reception of a corresponding plurality of data streams, wherein one or more of the streams may comprise redundant data. A plurality of data streams may be transmitted and / or received by a plurality of network interface hardware devices. Similarly, a plurality of data streams may be transmitted and / or received by a plurality of ports integrated into a single network interface hardware device. Each of the plurality of data streams may be assigned a unique identifier and the identifier of a first data stream may differ by one bit from an identifier of a data stream comprising data redundant to the first data stream.

A method for providing time synchronization in a node connected to an Audio Video Bridging (AVB) Ethernet communication network includes steps of receiving static announcement messages from adjacent nodes and constituting a static grandmaster table, reselecting a grandmaster with reference to the static grandmaster table when a synchronization message timer expires, and updating the static grandmaster table according to reselection of the grandmaster. The method may rapidly time synchronization in the Audio Video Bridging (AVB) Ethernet communication network and minimize network load.

Aspects of a method and system for timely delivery of multimedia content via a femtocell are provided. In this regard, a femtocell may receive data via an upstream path and transmit data via a downstream path. One of the upstream path and downstream path may comprise a cellular path and the other may comprise a non-cellular path. One or both of the upstream path and the downstream path may be audio video bridging (AVB) paths. Data may be stored in the femtocell based on timing characteristics of one or both of the upstream path and the downstream path. Data may be delivered to the femtocell utilizing best effort delivery and the data may be forwarded by the femtocell with guaranteed quality of service. Resources in the femtocell may be reserved and / or synchronized, utilizing AVB protocols, for communication of one or more data streams.

An audio / vide bridging (AVB) system using an extended AVB reservation protocol, and a resource reservation method are provided where an AVB system using an extended AVB reservation protocol includes an egress device for transmitting a Generic Attribute Registration Protocol (GARP) or Multiple Registration Protocol (MRP) message comprising an AVB stream identifier or an application stream identifier to a relay device, the relay device for registering the AVB stream identifier or the application stream identifier according to the GARP / MRP message, and transmitting the GARP / MRP message comprising the application stream identifier, to an ingress device, and the ingress device for allocating the AVB stream identifier corresponding to the application stream identifier via the GARP / MRP message comprising the application stream identifier, and transmitting a reservation signal to the relay device.

An adapter or bridging device that provides both a wired audio or audio and video female jack connectors for wired devices such as wired earphones, headphones and wired video headsets; as well as a wireless link to nearby handheld computerized devices such as mobile phones (e.g. smartphones). The device may be configured to be clipped to the user's clothing, as well as to interface with pairing control devices to easily form Bluetooth, WiFi, or other type wireless links. The device may also include at least one computer processor to manage the wireless link, control the attached wired headphones or video headsets, as well as perform compression and decompression functions as desired.

A system and method to provide a protection ring in an Audio Visual Bridging (AVB) network is provided. The method includes the steps of monitoring a first status of links coupled to a plurality of devices in a ring network, receiving a second status of links of other devices in the ring network, and signaling devices in the ring network to generate a logical loop-free topology based upon a stored static physical configuration, the first status of the links and the second status of links of other network devices in the ring network. The method also includes the step of determining an allocation of flows to links based on stored flow characteristics. Determining an allocation of flows to links includes programming a transmit scheduler to provide a first percentage of bandwidth for Audio Video Bridging (AVB) flows while reserving a second percentage of bandwidth for non-AVB flows. The method further includes programming a forwarding unit to forward flows to their destination based on the logical loop-free topology.

Provided are a network system supporting a spanning tree protocol (STP), a relay apparatus thereof, and a method of creating a spanning tree. Proposed is a method of creating a tree topology, between AVB bridges, using a STP message including a group MAC address which is different from that used in a non-AVB (Audio Video Bridging) bridge (that is, a bridge without the function of AVB), in order to form a minimum number of AVB clouds. Therefore, it is possible to efficiently ensure transmission quality of a multimedia stream such as an AVB stream.

In a network having one or more Audio Video Bridging (AVB) devices, non-AVB bridges are detected by transmitting a maintenance message, such as a unicast linktrace message, from one AVB device such as a residential gateway to another AVB device such as a set-top box or IPTV. AVB devices in the path provide replies indicating whether the port on which the linktrace message was received is connected to a non-AVB bridge. The disclosure has utility in diagnostics problems with IPTV in a network.

Aspects of a method and system for implementing redundancy for streaming data in audio video bridging networks are provided. Network resources may be reserved over a plurality of network paths. Reserved resources may be utilized for the transmission and / or reception of a corresponding plurality of data streams, wherein one or more of the streams may comprise redundant data. A plurality of data streams may be transmitted and / or received by a plurality of network interface hardware devices. Similarly, a plurality of data streams may be transmitted and / or received by a plurality of ports integrated into a single network interface hardware device. Each of the plurality of data streams may be assigned a unique identifier and the identifier of a first data stream may differ by one bit from an identifier of a data stream comprising data redundant to the first data stream.

An operation method of a communication node in a vehicle network is disclosed. A transmission method performed by a communication node may be configured to comprise performing an initialization operation for transmission of an audio video bridging (AVB) stream, performing an operation of obtaining a buffer for the transmission of the AVB stream, performing the transmission of the AVB stream stored in the buffer, and performing an operation of finalizing the transmission of the AVB stream. Accordingly, performance of the vehicle network can be enhanced.

A digital device (100) for streaming audio and / or video data has a signal processor (111) configured to process blocks of samples of the audio and / or video data. The signal processor (111) requires block processing time to process blocks of samples separately. The digital device (100) has an audio-video bridge interface (115) configured to generate and transmit frames comprising the processed block of samples as payload. The audio-video bridging interface (115) is configured to set the transmission rate of the frames of at least one traffic class according to the block processing time.

Aspects of a method and system for utilizing a single connection for efficient delivery of power and multimedia information are provided. In this regard, power supplied and / or received over a network link may be controlled based on multimedia content communicated over the network link. The multimedia content may be converted to and / or from Ethernet frames for communication over the network link utilizing audio video bridging. The multimedia content may be raw video or may be formatted according to, for example, HDMI or DisplayPort specifications. The power supplied may be controlled by selecting one of a plurality of power classes. The selection of power class may be based on resolution of the multimedia content, whether the multimedia comprises audio and / or video, and / or based on latency targets.