65results about How to "High bandwidth requirements" 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 configuration of a communications device, and a method for its operation are provided for automatically and dynamically adjusting bandwidth of a communications channel. The device and method operate to detect events indicating anticipated changes in bandwidth requirements of the communications channel. Such events may be browser or bandwidth related events, for example, that indicate a forthcoming requirement for increased or decreased bandwidth. The device and method then can extract a bandwidth determination factor if available and then calculate a new value for a bandwidth setting of the communications channel in response to detecting such an event and can adjust a bandwidth characteristic of the communications channel according to the new value of the bandwidth setting such that communications channel can accommodate the anticipated change(s) in the bandwidth requirement. The invention can operate in wireless and non-wireless communications systems to cause bandwidth to be adjusted to closely track usage requirements of the communications channel.

According to some embodiments of the present invention, a system (100), apparatus and method of network operation and information processing, including data acquisition, data processing, data provision, and/or data interoperability features is presented. In some exemplary embodiments, the method includes registering users logging-on to a computer network (170) and gathering user-related information from users (121). In one or more embodiments, user-profile and location-centric information for each user may be gathered and/or processed in connection with processing targeting and content information.

The invention involves a method comprising the steps of

• • providing (S3) a wind data set (3) including wind data of a plurality of positions,
  • receiving (S4) data for a predicted airplane trajectory (311),
  • providing (S5), based on the wind data set (3), a set of wind data elements (302), each including data concerning wind at a position along the predicted airplane trajectory (311),
  • repeating steps of selecting a subset of wind data elements (302S), creating a wind profile (303), and comparing the wind profile (303) to the set of wind data elements (302), and
  • selecting (S10) to be sent to a subscriber (2, 4) a subset of wind data elements (302S) based at least partly on which a wind profile (303) was created corresponding to the largest extent to the set of wind data elements (302).

According to some embodiments of the present invention, a system, apparatus and method of network operation and information processing, including data acquisition, data processing, data provision, and/or data interoperability features is presented. In some exemplary embodiments, the method includes registering users logging-on to a computer network and gathering user-related information from users. In one or more embodiments, user-profile and location-centric information for each user may be gathered and/or processed in connection with processing targeting and content information.

A system and method for performing color correction based on physical measurements (or estimations) of color component spectra (e.g. red, green, blue color component spectra). A color correction system may comprise a spectrum sensing device, a color calibration processor, and a calculation unit. The spectrum sensing device may be configured to measure color component power spectra for pixels generated by one or more display devices on a display surface. The color calibration processor may receive power spectra for a given pixel from the spectrum sensing device and compute a set of transformation parameters in response to the power spectra. The transformation parameters characterize a color correction transformation for the given pixel. The color calibration processor may compute such a transformation parameter set for selected pixels in the pixel array. The calculation unit may be configured to (a) compute initial color values for an arbitrary pixel in the pixel array, (b) compute modified color values in response to the initial color values and one or more of the transformation parameter sets corresponding to one or more of the selected pixels, and (d) transmit the modified color values to the display device.

Using spread-spectrum encoding the spread the spectrum of information signals transmitted in an optical communications system enables significantly higher levels of inter-channel interference to be tolerated than in conventional optical communication systems. This allows the bandwidth of the optical channels of the optical communication system to be increased, and the bit rate of the channels to be increased. Applying spread-spectrum encoding to the information signals increases the bit rate of each information signal by a factor of L, but significantly more than L spread-spectrum information signals can be transmitted in the same optical channel and can be successfully recovered at the receiver. Accordingly, using spread spectrum encoding provides a significant increase in the capacity of the optical communication system.

The invention concerns a method of providing a client (21, 22, 23, 24) transparent access to storage space administrated by a storage service, as well as a client (21, 22, 23, 24) and a storage system for performing this method. Data are exchanged between the client (21, 22, 23, 24) and the storage system (5) providing the storage service via a communication network (1). A client (24) invokes the storage service for providing the storage space. The storage space associated with the client (24) is located within the storage system (5). A secure connection is established between the client (24) and a storage device (51) of the storage system (5) dedicated to store data assigned to said storage space. Data assigned to the storage space is stored in encrypted form in said storage device (51).

A network device includes interface logic and processing logic. The interface logic receives data. The processing logic generates a checksum of the data and fragments the data into one or more cells. The processing logic further determines whether one of the one or more cells includes at least one of cell overhead bytes and cell pad bytes, and selectively inserts the checksum into the at least one of cell overhead bytes and pad bytes based on the determination.

The present invention discloses a data scheduling and transmitting method supporting a time trigger mechanism in a FC switch, including the steps as follows: performing parameter configuration for a port of the switch according to a virtual channel strategy; 2. judging whether a data frame is time trigger data or event trigger data after the port of the switch receives the data frame, and entering a time trigger buffer region if the data frame is the time trigger data; 3. querying the message cycle and the time migration according to a virtual link number after the time trigger data enters the time trigger buffer region, judging whether the data frame is valid or not according to the current global time, and putting the data frame in a port buffer region if the data frame is valid and transmitting a schedule request to a scheduler; 4. responding the schedule request by the scheduler at the given time; 5. and switching on a crossbar switch by the switch after the schedule success so as to complete the data exchange and transmission. The method meets the requirements of high bandwidth and real-time performance for communication transmission in the airplane avionics system.

A mobile ad-hoc network (MANET) may include a source node, a destination node, and a plurality of intermediate nodes. The source node may establish a plurality of routes to the destination node for transferring data therebetween, where each route passes through at least one of the intermediate nodes. The source node may also encode a plurality of data packets using a forward error correction (FEC) encoding algorithm to generate error correction data for the data packets, interleave the data packets and error correction data, and distribute and send the interleaved data packets and error correction data across the routes to the destination node. Furthermore, the destination node may receive and deinterleave the interleaved data packets and error correction data. The destination node may also decode the data packets based upon the error correction data using an FEC decoding algorithm to correct compromised data packets.

A video combining circuit includes: a video component controller for receiving and processing a first video component signal to output a first video signal including location information; and a video signal controller coupled to the video component controller for receiving the first video signal and a second video signal and choosing one of the first and second signals according to the location information to output a video composite signal; wherein the first and second video signal does not overlap.

Methods and apparatus, including computer program products, implementing and using techniques for processing a data packet. An input port receives a data packet, a switching board classifies the data packet, determines whether the data packet should be accepted, and switches the data packet to a management board if the data packet is a first data packet in a session, and to a processing board if the data packet is not a first data packet in a session. A management board receives a data packet from the switching board, examines the data packet and forwards the data packet to one of the processing boards. One or more processing boards receives non-first data packets from the switching board and data packets from the management board and processes the data packets. A firewall and a secure gateway with firewall and virtual private network functionality for processing a data packet are also described.

The invention discloses an FDMA-based unmanned aerial vehicle measurement and control cellular communication method. The method comprises the following steps: establishing a hybrid base station; constructing a cellular communication network by using the hybrid base station; allocating a downlink frequency band, an uplink frequency band and a broadband frequency band to the cellular communication network; allocating a narrowband downlink frequency band and a narrowband uplink frequency band to each unmanned aerial vehicle; selecting a movable base station of the unmanned aerial vehicle from thehybrid base stations, and adjusting the direction of an antenna unit of the movable base station; sening notification information to the unmanned aerial vehicle, so that the direction of the unmannedaerial vehicle antenna unit is matched with the direction of the base station antenna unit of the movable base station by the movable base station; broadcasting a telemetry frame signal in a narrowband downlink frequency band by the unmanned aerial vehicle; receiving the telemetry frame signal and performing demodulation, decoding and frame format analysis by the movable base station to obtain atelemetry frame; and forwarding the telemetering frame by the movable base station to a main console. T through the FDMA technology, signal interference between unmanned aerial vehicles is avoided, multiple unmanned aerial vehicles can be accommodated, and the multiple access problem of an unmanned aerial vehicle measurement and control system is solved.

Methods and systems for transmitting an interruption-free version of a television program for recording on a user equipment device. In one aspect, a system transmits a first stream including a television program to a user equipment device. The system receives an indication that the television program is being recorded on the user equipment device. The system determines whether an interruption is imminent during transmission of the television program. In response to determining that the interruption is imminent, the system generates a second stream including the television program. The second stream does not include the interruption during the transmission of the television program. The system transmits the second stream to the user equipment device along with an instruction to switch recording of the television program from the first stream to the second stream.

In a video conferencing system, digital data representing pixels of a selected scene are stored in a Video accumulator Array Memory cells (VAM), each cell having memory with several register structures and having the capability of processing the digital data to facilitate compression of the digital data. The VAM has the ability to tell the processor information about the temporal nature of the video data without requiring the processor to first read the data and then test the data. In accordance with the present invention, the capability of processing the video data is designed directly in the memory function as they are stored. The memory array, by providing a capacity of temporal processing wherein the digital data in one video frame can be logically interacted with another video frame later in time, can make a significant reduction in the bandwidth required to transmit a video frame. In a scheme for representing gray scale luminosity, the luminosity is digitally represented by the plus and minus differences from the mid point of the gray scale. A color video camera, in addition to generating color separation pixel values, also generates gray scale luminosity values which include a steady state infrared component provided by steady state illumination of scene in order to reduce the adverse effects of fluorescent lighting.