658 results about "Networked Transport of RTCM via Internet Protocol" patented technology

A method for data broadcast over a network includes receiving at a virtual bridge a data packet to be flooded over the network, and passing the data packet from the virtual bridge to a multicast-capable router, along with a broadcast indication. Responsive to the broadcast indication, the router determines a group of destination addresses to which the packet should be multicast, and creates copies of the packet for transmission over the network to the destination addresses in the group.

A wireless local area network (WLAN) radio-frequency identification (RFID) tag system provides location finding in a wireless local area network (WLAN), using a WLAN channel. Interference with the WLAN is prevented by either using a sniffer circuit to determine that no network transmission is in progress, using a modified coding sequence or preamble to cause standard WLAN receivers to ignore the RFID tag transmissions, or transmitting a message using a standard WLAN signal addressed to an address not corresponding to a unit within the WLAN. Location units (LUs) and a master unit (MU) within the WLAN receive the RFID tag transmissions and can determine the location of a tag by triangulation based on differences between the signals received at the location units from the tag. The master unit receives the signal information from the location units and computes the location of the tag. Time-difference-of-Arrival (TDOA), received signal strength indication (RSSI) or other triangulation techniques may be used.

A method and system for transmitting data over a network are described. In one embodiment, the system comprises a cradle to transmit data to a network server and an electronic device coupled to the cradle. The electronic device includes a sensor to trigger a data connection between the electronic device and the cradle. The electronic device also includes a transmitter to download the data to the cradle.

Time information which is to be transmitted via a data packet network is called up from a time information source and is transmitted to a data packet transmission module. The data packet transmission module controls the transmission time of a data packet in which the time information is transmitted via the data packet network. The transmission time and the calling of the time information are aligned with respect to one another in time by a transmission signal which is generated by the time information source or by the data packet transmission module and indicates the transmission time.

A system and method for real time transmission of variable bit rate MPEG video traffic with consistent quality, wherein each frame is encoded with quantization parameter generated from an encoder rate controller, and encoded data is transmitted to an encoder buffer. Transmission rate about each frame interval is determined by a channel rate controller at the beginning of the frame interval. Data transmission buffered at the encoder buffer is first regulated by Leaky Bucket counter, and the regulated data is transferred to a decoder buffer in a video receiving system through network. The encoder rate controller and channel rate controller included in the VBR video transmission system control the transmission rate generated from the video encoder and that from the network with satisfying imposed constrained conditions, respectively.

A method for secure transmission of data, like e-mail and other secure documents, over a computer network includes the use of biometrics to verify that the sender of the data is confirmed as an individual authorized for secure access transmission of data over the network and by verifying that the recipient of the data is also an individual authorized to receive data by secure access transmission over the network. The methodology comprises creating a database containing the biometric templates of all individuals authorized for secure access transmission of data over the network and connecting the database to a data processor. The transmission of counterfeit messages is prevented by confirming the identity of the sender as an individual authorized for secure access transmission over the network by scanning a predetermined biometric of the sender, and comparing the biometric of the sender with the predetermined biometric of all individuals who are authorized for secure access transmission over the network. The recipient of a secure access message is not permitted to access the message until recipient's identity has been similarly confirmed as an individual authorized to receive messages secure access transmitted over the network. Once the recipient's identity is confirmed the message may be opened. The sender will receive confirmation by return electronic mail that the message has been opened by the authorized recipient.

Method and apparatus for broadcasting streaming video. A method for broadcasting streaming video according to the present invention has the steps of receiving a plurality of video input streams, each of the plurality of video input streams being transmitted via an IP-based network, selecting one of the plurality of video input streams for broadcast as a video output stream, and broadcasting the video output stream. The invention provides a technique by which any of a plurality of video input streams transmitted via the Internet or other IP-based network can be selectively broadcast in real time, and in which switching among the plurality of video input streams can be conducted in real time. The video output stream can also be broadcast over the Internet or other IP-based network such that a viewer can receive the various broadcasts on a PC or other device without re-connecting for each broadcast.

A system and method for updating a replicated destination file system snapshot with changes in a source file system snapshot, provides an extensible, file system-independent format to transmit a data stream of change data over the network. The format enabled backward compatibility between different versions of applications running on the source and destination through use of discrete header types which, if not recognized by a version of the application are ignored. In addition, the headers, which can carry data, or act as basic headers for follow on data, include expansion space for additional information.

A method of and system for transferring data over a wireless communications network are provided. A wireless device user desiring to browse a World-Wide-Web page or other data sends a request over the wireless network to a Web server. The Web server receives the request and transmits the request over the Internet to the destination server containing the desired Web page. The destination server receives the request and returns the requested Web page to the Web server. The Web server parses the Web page to remove data that is not displayable on the wireless device and transmits the parsed Web page over the wireless network to the wireless device for display to the user.

The present invention provides a system for capture and instantaneous on-demand delivery of multimedia content over a communication network to a plurality of users. Incorporated into the system is a variety of advantageous features including dynamically mapped resource locator server with central control mechanism for the administration of communication channels, users access and activity, cross-platform peer-to-peer delivery-on-demand client and user programmable content capturing component. In the preferred embodiment, the multimedia information being delivered is high quality video and audio with the purpose of multi-user multimedia broadcasting and remote video monitoring over a packet switched network, such as the Internet. However, the multimedia information can also include images, text, keystrokes, user commands, computer files, data, or any other type of information that can be transmitted over any communication network.

A communication system includes a client controlled gateway enabling concurrent voice / data transmission in a distributed information network and a communication network between the client and a service representative of a host system provider. A computer and a modem couple the client to the gateway in the communication network over a single communication path. The computer includes a browser for searching the distributed network. The browser includes "plug-in" programs which interact with the data server in supporting voice calls between the client and the host system. The gateway functions as a shared voice data (SVD) server to couple the client to the data server after authentication of the client's identification (ID) and password. The gateway transfers data between the client and the data server over the distributed network in accordance with screens presented to the client by the host system. Concurrently, voice service is provided between a representative of the host system and the client over the communication network using "action buttons" appearing in selected screens presented to the client by the host system provider over the distributed network. One "action button" enables the client to initiate voice transmissions over the communication network concurrently while data is being transmitted over the distributed network. Another "action button" enables the host provider to initiate voice transmission over the communication network concurrently while data is being transmitted over the distributed network.

A method and apparatus is disclosed for delivering messages that utilizes a message queue and a router / filter within a private data network. The private network is connected to an external data network such as the Internet, and has separate outbound resource servers to provide a high degree of scalability for handling a variety of message types.

An electronic camera and system for capturing of digital images, and wireless transmission of the captured images to a recipient. The camera includes a selection device for creating an electronic content identifier to be associated with a digital image file in the camera that identifies a recipient that the associated digital image file is to be forwarded.

A system for transporting public switched network (PSTN) terminated signaling across an Internet protocol (IP) network includes a gateway between the PSTN and the IP network. The gateway receives a telephony signaling message from the PSTN and determines if the telephony signaling message maps to an IP signaling message. If the telephony signaling message does not map to an IP signaling message, the gateway packages the telephony signaling message in a special IP signaling message for transport over the IP network. If the gateway receives a special IP signaling special message, the gateway unpackages the telephony signaling message from the special message for transport over the PSTN. If the gateway receives DTMF signals from the PSTN, the gateway translates the DTMF signals to digits and packages the digits in a special IP signaling message for transport over the IP network. The gateway also packages the DTMF signals in an IP media transport protocol message for transport over the IP network.

An approach is provided for a managed navigational service. Real-time positional information corresponding to a user is received over a communication network. An approaching point of interest is determined based on the positional information. The approaching point of interest is correlated with travel information and metadata associated with the approaching point of interest. Information about the approaching point of interest is transmitted over the communication network to the user.

A client sends a request to an authentication server requesting access to a service at an application server. The authentication server returns a token containing an encrypted version of a session key that was encrypted using a secret shared between the authentication server and the application server. The client encrypts application data using a corresponding unencrypted version of the session key and text-encodes both the encrypted application data and the encrypted version of the session key. The text-encoded application and text-encoded encrypted version of the session key are both included in a message and sent to the application server. The application server decrypts the encrypted version of the session key using the shared secret so as to reveal the unencrypted version of the session key. The application server then decrypts the encrypted application data using the revealed unencrypted version of the session key.

Domain Name Service (DNS) requests are used as the reporting vehicle for ensuring that security-related information can be transferred from a network. As one possibility, a central facility for a security provider may maintain a data collection capability that is based upon receiving the DNS requests containing the information being reported. In an email application, if a data block is embedded within or attached to an email message, an algorithm is applied to the data block to generate an indicator that is specifically related to the contents of the data block. As one possibility, the algorithm may generate a hash that provides a “digital fingerprint” having a reasonable likelihood that the hash is unique to the data block. By embedding the hash within a DNS request, the request becomes a report that the data block has been accessed.

A system for transmitting data through an IP core network so that data may be transmitted from an originating source, through a public switched telephone network (PSTN) and through the IP core network to a land line telephone and a cellular telephone. The system includes an IP core network that is coupled to the PSTN through an interface. The IP core network is also coupled to an access IP network. A radio access network is coupled to the IP core network and the cellular telephone. Upon receipt of data from the originating source, the IP core network simultaneously initiates a ringing of the land line telephone through the access IP network and a paging of the cellular telephone through the radio access network.

The invention relates to a ship rescue information system and realization method thereof. In the system, ship related information is obtained by each subsystem of a data obtaining module, and the information is transmitted to a data application module through wireless or network transmission by a data transmission module, the data application module checks, analyzes and stores data, the ship related information is obtained and operation recording or warning information is formed, the information is transmitted to a data service module as real-time displaying or warning processing, and simultaneously the data service module also can response the command issued by monitor staff for the system, thereby realizing related management operation. The invention has the following beneficial effect: real-time, efficient and accurate ship positioning and tracking position information, operation state and work condition are provided for ship management department and user, thereby improving ship supervision ability, further analyzing obtained ship information, realizing statistical analysis, early warning and warning functions of ship information, and further perfecting ship safety rescue system.

A highly reliable industrial control system is produced using a network running a standard serial protocol on two redundant messages. A safety protocol is embedded within the standard serial protocol by adding to special error detecting data redundant with the protocol of the standard serial network. In addition, only a single network protocol module (CAN) is necessary to transfer two logical messages of data between modules. In order to still provide redundancy, the data on one of the messages is encoded in a predetermined manner, such as by inverting each bit of data, prior to transmission over the network. The data is then decoded at the destination module and compared to the data on the other logical message to determine whether a transmission error has occurred. Safety protocol may be implemented in an additional level for integrated circuits or through firmware changes in programmable aspects of the industrial controller components.

The method includes steps for creating and updating an interactive television application, which includes business data and other interactive and dynamic data which changes frequently over time. The interactive television application and data is transmitted over a television broadcast network, and the method includes steps for presenting the data to the user. Business data is compiled into a binary form, the business data for example comprising descriptions of products. A description of an interactive application is generated using an authoring tool. The authoring tool allows a creative designer to create page layouts and use simple script to specify how to respond to user interactions. The compiled business data and the script are streamed to a receiver for generating video information for a user's television, wherein the receiver uses the script to access the compiled business data and generate a presentation of the data for the user. The receiver can be a set-top box for use with a cable television provider, a terrestrial television provider or a satellite television provider. The business data can be compatible with a version of XML (extensible markup language). The business data can be referenced within script created using an authoring tool without the instances of the business data being present at the time of authoring. The compiling can be configured to improve the access speed of the receiver to the business data and to reduce a memory footprint of the business data on the receiver. The business data can be updated and recompiled without requiring the application to be re-authored manually.

A method and apparatus is disclosed for transmitting a requested media file through a network. A master controller of a server partitions the media object. The master controller of the server then assigns a segment of said partitioned media object to a file partition handler for transmission over the network to a client that requested the media object. The file partition handler transmits the segment over a user datagram protocol port through the network to a client. The master controller then assigns a second segment of said partitioned media object to the file partition handler when the original segment is transmitted successfully to the client. The segmentation of the media object is determined in response to the availability of file partition handlers and the conditions specified by the client.