346results about How to "Avoid discontinuities" patented technology

The invention provides a method and system for fault-tolerant communication. It utilizes three wide area networks, including the cell phone network, the internet and the telephone network (PSTN). The method and system monitors the wide-area networks and sends warning messages if they cannot be accessed from a local site. Primary failure conditions relate to the access and use of the three wide-area networks. Secondary failure conditions include power outages. The possible fault conditions include: ‘telephone out’, ‘internet out’, ‘wireless radio out’, ‘power out’. If these failure conditions are detected, the method and system alerts the user and redirects voice, text message, and data traffic via a detour over a different wide-area network in order to avoid that failure.

A method and system has been disclosed that routs information over one of multiple networks in a fault-tolerant manner. In case of network failure, detour routers allow the start-detour routers to switch the information flow over another network to an end-detour router, where the information flow is switched back to the originally-intended network. Cell radios are utilized, as well as telephones and the internet to provide redundancy and fail-over under ‘telephone out’, ‘internet out’, ‘cell phone out’ conditions. The method has particular strengths in supporting communication even with dynamically assigned addresses, thus assuring that remote users receive monitoring and alarm information in a timely manner.

A light guide with input and output faces 2, 3a is polar-symmetric about the first face 2 and has optical properties such that the angle at which a ray is injected into the first face determines the position at which it leaves the second face 3a, or, if operated in the reverse direction, the position at which the ray enters the second face determines the angle at which the ray leaves the second face. The light guide includes a tapered transparent sheet 3, light from the first face entering at the thick end of this sheet, and the second face forming one face of the tapered sheet. An input/output slab 4 adjoins the tapered sheet 3 for fan-out of light from the first face 2 to the tapered sheet, and a transition region 8 is located between flat and tapered sheets. The polar symmetry means that light rays always travel in line with the taper direction, which suppresses banding. Preferably the light guide further includes a prism device 20 for folding the light so that the flat and tapered sheets can be folded over each other. A method of making such a prism is also disclosed.

An uninterruptible power supply is disclosed that includes a digital controller comprising a plurality of microprocessors. These microprocessors are programmed and arranged to provide various control features heretofore unavailable using analog controllers of the prior art.

A method and computer program product for providing paraphrasing in a text-to-speech (TTS) system is provided. The method includes receiving an input text, parsing the input text, and determining a paraphrase of the input text. The method also includes synthesizing the paraphrase into synthesized speech. The method further includes selecting synthesized speech to output, which includes: assigning a score to each synthesized speech associated with each paraphrase, comparing the score of each synthesized speech associated with each paraphrase, and selecting the top-scoring synthesized speech to output. Furthermore, the method includes outputting the selected synthesized speech.

A sample jitter buffer manager more or less aggressively conserves (rations) or discards data in a jitter buffer, based on the fluctuating amount of data in the jitter buffer. The jitter buffer manager counts, provides, discards and/or otherwise manages individual sample data units, rather than entire packets. Normally, enough data is removed from the jitter buffer to fill a data packet for a receiver. However, if the amount of data in the jitter buffer is low, less data is removed from the jitter buffer and placed into the packet, and the remainder of the packet is filled with duplicates of some of the data in the packet or in the jitter buffer. As the jitter buffer fills beyond a useful level, the jitter buffer discards progressively larger amounts of data, without necessarily discarding one or more entire packets. This fine-grained management of the amount of data in the jitter buffer maintains a buffer size that can provide a steady stream of packets to the receiver, without significantly impacting the fidelity of a signal represented by the data, and it mitigates the impact of fluctuations in packet inter-arrival times.

A method and system are provided for synthesizing a number of corrupted frames output from a decoder including one or more predictive filters. The corrupted frames are representative of one segment of a decoded signal (sq(n)) output from the decoder. The method comprises determining a first preliminary time lag (ppfe1) based upon examining a predetermined number (K) of samples of another segment of the decoded signal and determining a scaling factor (ptfe) associated with the examined number (K) of samples when the first preliminary time lag (ppfe1) is determined. The method also comprises extrapolating one or more replacement frames based upon the first preliminary time lag (ppfe1) and the scaling factor (ptfe).

A low noise multi-loop radio frequency synthesizer is disclosed for the read channel in a hard disk drive, and for RF wireless communications local oscillator applications. The frequency synthesizer receives an input reference signal having a frequency fR, into a fine tune phase locked loop and into a coarse tune phase locked loop. Driven by the input reference signal, the fine tune PLL outputs a fine tune signal with a frequency fR.P, where P is an integer, while the coarse tune PLL, also driven by the same input reference signal, outputs a coarse tune signal with a frequency fR.A, where A is an integer. A translation phase locked loop has a unity multiplication factor and is driven by the fine tune signal output. The frequency synthesizer finally has a Gilbert cell double balanced mixer coupled between the coarse tune and the translation phase locked loops, wherein the Gilbert cell mixer combines the coarse tune signal and the output signal of the translation phase locked loop and couples the mixed signal into the translation phase locked loop. The translation loop outputs a signal with a frequency which is proportional to the linear sum of the coarse tune signal and the fine tune signal.

Linear predictive speech coding system with classification of frames and a hybrid coder using both waveform coding and parametric coding for different classes of frames. Phase alignment for a parametric coder aligns synthesized speech frames with adjacent waveform coder synthesized frames. Zero phase alignment of speech prior to waveform coding aligns synthesized speech frames of a waveform coder with frames synthesized with a parametric coder. Inter-frame interpolation of LP coefficients suppresses artifacts in resultant synthesized speech frames.

A system and methods for the enhancement of a user's vision using a head-mounted and user-controllable device including a magnification bubble having variable attributes wherein a portion of the scene is magnified within the complete scene, wherein the user is able to modify, in real-time, how the images are processed including the attributes of the magnification bubble.

In order to quickly update map data in region units without generation of contradiction to adjacent non-updated regions after the updating, under map data updating, time and date of updating of update region of a terminal is obtained with designation of a region as the update object used as a trigger, a mesh ID on the external boundary of the partial update region is obtained, and the differential updating data ID of the updated differential updating data is also obtained from the terminal. The partial updating data and differential updating data required for updating of the designated region of the terminal are selected from the information obtained above and these selected data are applied to the map data of terminal. When updating is conducted using the partial updating data and differential updating data, the time and date of updating of the relevant partial update region ID are changed and the differential updating data ID is registered to the differential management data.

The present invention provides an organic light-emitting device including a substrate and a plurality of organic light-emitting elements formed on the substrate, wherein the plurality of the organic light-emitting elements include a first organic light-emitting element which emits a light of a first emission color, and a second organic light-emitting element which emits a light of a second emission color different from the first emission color; each of the organic light-emitting elements has a first electrode having a light reflection layer and a transparent conductive layer, an organic compound layer containing a light-emitting layer, and a second electrode as a light extraction electrode, in mentioned order on the substrate; the light reflection layer of the first organic light-emitting element is formed between the substrate and the transparent conductive layer; the light reflection layer of the second organic light-emitting element is formed between the transparent conductive layer and the organic compound layer; and a thickness of the transparent conductive layer of the first organic light-emitting element is the same a thickness of the transparent conductive layer of the second organic light-emitting element.

A lifting foil for an aircraft, a hydrofoil or the like having a pair of courses or wings. Vortex losses due to spanwise fluid flow are substantially reduced by joining the tips of the courses with flow guides configured for jointly terminating the undesired flows. Termination is effected by providing the flow guides with crossections cambered for reducing the dynamic pressure of fluid flowing in a spanwise direction across flow guide surfaces.

A driver apparatus is provided for controlling a light source array comprising at least first and second light sources, the light source array used for illuminating a scan region on a target object, wherein light reflected from said target object is captured by a detector. The driver apparatus comprises a single integrated circuit comprising processing means for processing image data received from the detector, a switching array comprising at least first and second switches for switching the respective first and second light sources, and a current source for controlling the flow of current through the light sources. In this way the LED switching circuitry that controls an LED array is placed on the same integrated circuit (i.e. monolithic circuit) as the analogue processing circuitry that processes the image data, with the current source controlling the flow of current through the LEDs in the LED array. The current source has the advantage of avoiding rapid changes or slope discontinuities in the current flowing through the LEDs, which would otherwise cause unwanted transient signals. A shunt path comprising a switching device may be provided in parallel with the LED array and switching array. The shunt path has the advantage of enabling the switching sequence from one LED to another to be controlled such that a substantially constant current is drained from the supply (subject to any differences in the inherent current drawn by the Red, Green and Blue LEDs, respectively).

A method for handling service failures for in a communications network comprising a user equipment, a first network element and a serving network element, the method comprising the following steps. Receiving at the first network element a first message from the user equipment. Transmitting the first message from the first network element to the serving network element. Detecting at the first network element that the serving network element is out of service. Determining at the first network element the type of the first message, and in dependence on the type of the first message sending from the first network element to the user equipment an error message including an indication that the serving network element is out of service.

Linear predictive speech coding system with classification of frames and a hybrid coder using both waveform coding and parametric coding for different classes of frames. Phase alignment for a parametric coder aligns synthesized speech frames with adjacent waveform coder synthesized frames. Zero phase alignment of speech prior to waveform coding aligns synthesized speech frames of a waveform coder with frames synthesized with a parametric coder. Inter-frame interpolation of LP coefficients suppresses artifacts in resultant synthesized speech frames.

Provided are an echo elimination method and device. The method includes: estimating an echo path characteristic parameter of an echo signal; taking a source signal of the echo signal as a reference signal, generating an echo estimation signal according to the echo path characteristic parameter; and subtracting the echo estimation signal from a to-be-processed speech signal. The present invention solves the problem in the related art that self-adaptation cannot be achieved when a returned near-end audio is suppressed, thus facilitating the enhancement of the speech quality of a conference and the improvement of user experience.

An information processing apparatus is provided with a performance measuring unit of a storage device, a look-ahead buffer whose capacity can be varied and a power profile which is a power consumption value for each operation mode of the storage device, thereby determining the buffer capacity based on performance measured by the performance measuring unit, the power profile and a playback bit rate and playback time of a video, and, after reading data to the buffer, switching the operation mode to an optimal mode (sleep, standby or idle) in the idle period, which can reduce power consumption.

Disclosed are methods that associate “importance” information with chunks of a media presentation. An end-user device uses this information to intelligently manage resources when downloading or rendering the media presentation. An editor tags a chunk as important based on the contents of the chunk. The importance information includes a recommendation that this chunk be rendered at a higher-than-usual resolution and that the end-user device start downloading this chunk out of order. An advertiser recommends that an advertisement be rendered at a resolution high enough for the end user to view it appropriately. The importance information can include a recommended point at which to display the advertisement (e.g., between scenes in the media presentation). The end-user device can download advertisements before they are needed. Later, when the user requests a media presentation, an already downloaded advertisement is rendered while the initial chunks of the media presentation are downloaded.

Traffic sensing and monitoring apparatus (100) comprises a length of optical fiber (112), means (102, 103, 104, 106, 107, 109, 119) arranged to introduce a series of pulse pairs into an input end of the length, each of the pulse pairs comprising first and second pulses of radiation having a frequency difference Ω and the second pulse being delayed with respect to the first by a delay τ, and the apparatus further comprising a photodetector arranged to detect radiation which is Rayleigh-backscattered within the length of fiber towards the input end to generate an output signal in response thereto. Apparatus of the invention allows sensing and monitoring of traffic at any position along a long length of road (e.g. 5 km) with lower installation and maintenance costs per unit length compared to prior art systems providing the same spatial resolution.

A modulation control scheme for a series-connected dual active bridge (DAB) DC to DC converter in a maximum power point tracking charge controller used in a photovoltaic system controls operation of the converter in a forward direction power flow mode to control charging of a battery bank with electricity produced by the photovoltaic array. The modulation control scheme is also capable of operating the converter in a reverse direction power flow mode to control the flow of electricity from the battery bank to a DC load. The modulation control scheme divides the converter's operating range in each mode into five main cases of minimum root mean square (M-RMS) operating regions and seven main cases of full zero-voltage switching (F-ZVS) operating regions, as well as transition operating regions between adjacent main cases, based on applicable power level and value of voltage differential.

A network device to detect large flows includes a card to receive packets of flows. The device includes a large flow detection module including a serial multiple-stage filter module including series filter modules including a lead filter module and a tail filter module. Each filter module includes counters. The serial filter module is to serially increment the counters to reflect the flows, and is to increment counters that correspond to flows of subsequent filter modules only after all counters that correspond to the flows of all prior filter modules have been incremented serially up to maximum values. The serial filter module is to detect flows that correspond to counters of the tail filter module that have been incremented up to maximum values as the large flows. The large flow detection module includes a lead filter removal module to remove the lead filter module from the start of the series.