2585 results about "Stream data" patented technology

A terminal determines a target value of stream data to be stored in its buffer in relation to its buffer capacity and the transmission capacity of the network. Also, the terminal arbitrarily determines a delay time from when the terminal writes a head data of the stream data to the buffer to when the terminal reads the data to start playback in a range not exceeding a value obtained by dividing the buffer capacity by the transmission capacity. The target value and the delay time are then both notified to a server. Based on those notified values, the server controls the transmission speed so that the buffer occupancy of the terminal changes in the vicinity of the target value without exceeding the target value.

A PC is authenticated by a server (SEQ100). When a monitoring start request is issued (SEQ101), an in-house security unit generates a one-time key (SEQ106). The one-time key and information ex. a port number with which the PC is connected to the in-house security unit is passed to the PC through the server (SEQ110). The PC and the in-house security unit are connected in PtoP (SEQ111). The in-house security unit encrypts a picture photographed by the surveillance camera with the one-time key and then streamingly transmits the encrypted picture data to the PC (SEQ114). The PC decrypts the received stream data with the pre-received one-time key, restores the original picture, and displays the restored original picture on a display portion. When a monitoring stop request is sent from the PC to the in-house security unit (SEQ112, 123), the in-house security unit deletes the one-time key (SEQ124).

A failure recovery framework to be used in cooperative data stream processing is provided that can be used in a large-scale stream data analysis environment. Failure recovery supports a plurality of independent distributed sites, each having its own local administration and goals. The distributed sites cooperate in an inter-site back-up mechanism to provide for system recovery from a variety of failures within the system. Failure recovery is both automatic and timely through cooperation among sites. Back-up sites associated with a given primary site are identified. These sites are used to identify failures within the primary site including failures of applications running on the nodes of the primary site. The failed applications are reinstated on one or more nodes within the back-up sites using job management instances local to the back-up sites in combination with previously stored state information and data values for the failed applications. In additions to inter-site mechanisms, each one of the plurality of sites employs an intra-site back-up mechanism to handle failure recoveries within the site.

Once data stagnation occurs in a query group which groups queries, a scheduler of a server apparatus calculates an estimated load value of each query forming the query group based on at least one of input flow rate information and latency information of the query. The scheduler divides the queries of the query group into a plurality query groups so that the sum of estimated load values of queries belonging to one query group becomes substantially equal to the sum of estimated load values of queries belonging to another query group. The divided query groups are reallocated to different processors respectively. Throughput in query processing of stream data in a stream data processing system can be improved.

Vehicle Communications using IEEE 802.11p WAVE functionality includes structure and method whereby a smart phone (SP) linked to an On Board Unit (OBU) having WAVE functionality, and incorporating Automotive Telemetry Protocol (ATP), has at least one processor to configure the SP as a GUI for the OBU, and to enable WAVE authentication of the SP through a networked Road Side Unit. Preferably, the OBU opens, after a command from an ATP Client, a virtual connection for streaming data between the vehicle data bus and a remote server providing an automotive scan tool. Also preferably, the SP may use either cellular or IEEE 802.11 control signals to trialaterate its geographic position with greater accuracy than GPS, and to hand off the geo-position fixes to the OBU. Accumulated geo-location information may be reported to a remote server, providing a centralized geographic trend analysis of plural SPs operating with OBUs.

A method of sending streamed data over an IP network from a first node 1 to a second node 4, the method comprising using Internet Key Exchange (IKE) to establish an IKE security association (SA) between the first and second nodes 1,4. A shared secret is established between the first and second nodes using the IKE SA, and the streamed data encrypted at the first node 1 with a cipher using the shared secret or a key derived using the shared secret. IP datagrams are constructed containing in their payload, segments of the encrypted streamed data, the datagrams not including an IPSec header or headers. The IP datagrams are then sent from the first node 1 to the second node 4.

The following invention relates to methods, systems, computer programs and computer program products for supporting said method, and different embodiments thereof, for monitoring data packet flows between Virtual Machines, VMs, within a data centre. The method comprises collecting flow data for data packet flows between VMs in the data centre, and mapping the flow data of data packet flows between VMs onto data centre topology to establish flow costs for said data packet flows. The method further comprises calculating an aggregated flow cost for all the flows associated with a VM for each VM within the data centre, and determining whether to reschedule any VM, or not, based on the aggregated flow cost.

A system and method are disclosed for forwarding data in hybrid wireless mesh networks. The method includes configuring a number of mesh network nodes as Potential Relay Nodes (PRNs) in an overlay network associated with a hybrid wireless mesh network, streaming data packets from a source node to a destination node using a native data forwarding algorithm of the hybrid wireless mesh network, dynamically identifying Relay Nodes (RNs) among PRNs in the overlay network, creating secondary paths for sending data packets towards selected RNs in the overlay network, and relaying data packets from RNs to the destination node using the overlay network.

According to the disclosure hereof, the functionality of a server can be extended to collect data on content streams that the server is delivering to clients, and to beacon certain data back an analytics system to facilitate monitoring of, reporting on, and analysis of the delivery of content streams. At various stages of the streaming process, a server can read and update state information (for example cookie data) on the requesting client reflecting, for example, status in playing a particular stream. Based on the client's requests and the state information at each stage, the server can beacon appropriate information about the stream and its playback status back to the analytics system. The teachings hereof are particularly useful, without limitation, in streaming media analytics and for segment-based streaming approaches, including over HTTP.

A method of efficiently transmitting streamed data of a program to multiple clients requesting the program at different times ranks the requests in a multilevel hierarchy, which describes merging of data streams servicing the requests. The multilevel hierarchy changes dynamically as new requests arrive or existing data streams are merged to reduce the bandwidth or other costs required to serve the requests. The hierarchy may be established by simple rules or by a modeling of the actual cost of possible hierarchies.

A digital broadcasting receiving system and method, where the digital broadcasting receiving system includes: a demodulator receiving and demodulating a dual transmission stream including a turbo stream and a normal stream; an equalizer equalizing the demodulated dual transmission stream; a first processor restoring normal stream data from the equalized dual transmission stream; and a second processor restoring turbo stream data from the equalized dual transmission stream and eraser decoding the turbo stream data. Thus, the reception sensitivity of a transmission stream including a turbo stream can be improved.

A mobile recording device includes a flexible camera head for capturing video stream data in real time; a microphone for capturing audio data in real time; a position determining module for capturing position data for the mobile recording device; a first and a second replaceable memory modules for storing the video stream data and the audio data, wherein the first replaceable memory module can be replaced when the second replaceable memory module is being used to store the video and audio data and the second replaceable memory module can be replaced when the first replaceable memory module is being used to store the video and audio data. The mobile recording device may further include a wireless transceiver for wirelessly transmitting the video, the audio, and the position data to a remote location and receiving data from the remote location.

A content processing architecture-and-method enabling high throughput, low-latency services to be performed on streamed data. A stream controller (300) receives and stores the streamed data, and also coordinates the performance of functions upon the streamed data by a plurality of stream processors (310). The results of the functions are used by one or more service processors (320) to effect decisions as to whether a subscriber should be allowed access to the streamed content. The service processors instruct the stream controller to act in accordance with the decisions.

A virtual space control data receiving apparatus comprises stream data receiving means for receiving a plurality of stream data for controlling a dynamic virtual space, according to the type of each stream data; manual data input means for inputting control data for an object to be controlled in the virtual space; and control data output means for outputting the control data input by the manual data input means, for the object controlled by the manual data input means, and outputting the stream data received by the stream data receiving means, for the other objects. Therefore, in a dynamic virtual space represented by 3-dimensional CG, static image, dynamic image, audio, and text which are based on a network such as the Internet, the virtual space can be reproduced in real time, and the viewer can selectively control an object.

Low bit rate contents data as pre-data corresponding to a series of stream data are preliminarily stored in a mobile phone. In order to reproduce certain contents, a transmission request of high bit rate contents data block having the same contents as those of the low bit rate contents data block is transmitted to the delivery source indicated by the transfer source information added to the pre-data upon reproduction thereof. If the high bit rate contents data block is received from the delivery source, the high bit rate contents data block is reproduced. Meanwhile, if the high bit rate contents data block is unreceived from the delivery source, the low bit rate contents data block having the same contents as those of the high bit rate contents data block is detected from the pre-data so as to be reproduced in place thereof.

The invention provides a broadcast reception apparatus allowing, when a reception status is worsened in a child device, to automatically view the broadcast program that has been viewed in the child device, in continuation in a parent device.

A parent/child television system include an antenna 1, a parent device A100, a child device B200 capable of wireless communication with the parent device A100, and a remote control 33. When a broadcasting is viewed in the child device B200 utilizing a digital tuner B12 of the parent device A100, a CPU-B58 of the child device B200 watches the reception state of the child device B200, and in case a transmission error is found frequently and another digital tuner A2 of the parent device A100 is not in use, a CPU-A 38 of the parent device A100 terminates transmission of a transport stream data to the child device B200 and sets the digital tuner A2, a video decoder A6 and an audio decoder A7 in a state where broadcast program can be viewed in the parent device A100.

A method and an apparatus for transmitting real-time streaming data are provided. The apparatus has a first terminal, a second terminal, and a relay server. Real-time streaming transmission paths between the first terminal and the relay server as well as between the second terminal and the relay server are established, and the first and the second terminals can obtain information from each other. Whether the first and the second terminals are directly connectable or tested. When the first and the second terminals can be connected directly, the first terminal alters the real-time streaming transmission path directly to the second terminal without passing through the relay server. When the second terminal can be connected directly to the first terminal, the second terminal alters the real-time streaming data transmission path directly to the first terminal with passing through the relay server.