4537 results about "Broadbanding" patented technology

In a digital broadband broadcasting system, in which information is transmitted and received periodically in bursts to reduce receiver power consumption, time-slice information is provided from the transmitter to the receiver. The time-slice information can include information from which the receiver can determine when a subsequent transmission burst will be transmitted. The time-slice information can include a burst duration, an amount of time between original bursts, the time between an original burst and a copy of the burst, and numbering of original bursts. This type of time-slice information can be placed into packet headers, such as one or more bytes reserved, but not used, for media access control addressing.

An arc fault detector system detects arcing faults in an electrical distribution system by monitoring one or more conductors and producing an input signal representing one or more electrical signal conditions in the circuit to be monitored. This input signal is processed to develop signals representing the electrical current flow through the monitored circuit and broadband noise signal components. The system analyzes these signals to determine whether an arcing fault is present, and if so, outputs a trip signal which may be used directly or indirectly to trip a circuit breaker or other circuit interruption device.

An apparatus for analyzing the broadband noise content of a digital image comprising the following: a means of automatically identifying regions of originally constant color in the image by analysis of the variance of pixel values of regions of the image; a means of automatically detecting and discarding regions deemed to be unrepresentative of the true noise content of an image, including under- and over-exposed regions; a means of allowing the user to manually select some or all required constant color regions if desired; and, a means of analyzing such constant color regions to generate a parametric or non-parametric model of the noise in the image, including frequency characteristic within and between channels and other characteristics such as phase which might describe structured noise.

The present invention provides an FMCW broadband life detection radar breathing and heartbeat signal extraction algorithm. Compared with the prior art, the algorithm has the advantages that breathing and heartbeat signals of multiple persons can be obtained simultaneously, the boundaries and energy of reconstructed breathing signals can be very well kept by using Coiflets wavelets compared with traditional frequency-domain filtering, especially processing conducted on short-time signals is obvious, higher harmonics of the breathing signals are filtered out by adopting a double-coefficient based LMS self-adaptive filtering algorithm, and the self-adaptive filtering algorithm does not need additional reference signals. Due to the fact that a degressive search step size coefficient is adopted in the algorithm, the heartbeat signals can be better retained while breathing signal harmonics are filtered out, the heartbeat signals can be rapidly converged by selecting the appropriate search step size coefficient and adopting the double-coefficient based LMS self-adaptive filtering algorithm, and smaller stable imbalance is kept in longer time, so that finally separated heartbeat signals are more accurate in frequency component within a long time.

A method and apparatus to segment video data files within a video distribution system to facilitate the transfer of the video data files from a file server computing system to client computing system within a video distribution system. The data files are fragmented as a function of demand for the data files, size of each data file of the plurality of data files, amount of retention space available on each of the plurality of data storage devices, and available bandwidth for communication with the client computing systems.

A method of receiving the uplink region allocation information is disclosed. In a broadband wireless access system, in which a mobile terminal receives uplink region allocation information, the present invention includes the steps of receiving an uplink map message from which an uplink map information element (UL-MAP IE) for a ranging region or an uplink bandwidth request region is omitted from a base station and receiving information for a region for a ranging region or uplink bandwidth request using a message periodically transmitted for a control information transmission for an uplink channel. By transmitting uplink region allocation information via a periodically transmitted message, the uplink region allocation information can be efficiently transmitted.

The invention discloses a measuring method and device for measuring the particle granularity, consistency and density, which relates to the technical field of ultrasonic measurement. The invention aims at solving the technical problem of increasing the commonality and the precision of the ultrasonic measurement. The measuring device includes a computer, a signal process circuit, a pulse wave launch / receive circuit and a broadband transducer, which are orderly connected together; the broadband transducer is arranged at the external side of a baffle plate. The process procedures of the computer are as follows: ultrasonic amplitude phase spectrum is obtained after the rapid Fourier transformation of the signal, and then the phase spectrum is converted to obtain a reflection coefficient, the acoustic characteristic impedance, the acoustic attenuation coefficient and the sound velocity; the compound density can be calculated by the measuring value, and the consistency can be calculated through the known particle and the density of the continuous medium; the frequency analysis of the direct reflection wave and the transmission echo is carried out to obtain difference between the acoustic attenuation spectrum and the theoretical acoustic attenuation spectrum, and the difference is then regarded as the objective function, and then is optimized with optimization method to calculate the distribution of the particle granularity. The invention has the advantages of measuring and analysis basing on the reflecting ultrasonic, great commonality and precise measuring result.

A set top box includes a front-end (e.g., a network interface) for receiving programming content over a broadband communication network and a processor operatively associated with the front-end. The set top box also includes a resolver operatively associated with the processor for determining a network-level multicast address corresponding to a domain name of a virtual channel on which the broadcast programming is available.

To make possible a very small and compact embodiment of a coupler plug, especially for use for a planar broadband lambda probe having an adjusting unit, the coupler plug being essentially made up of a housing, namely a base element and a cover element as well as seals, which seal off the interior of the housing from the exterior, and having an adjusting unit for a probe, especially a planar broadband lambda probe, which is mounted in the coupler plug or outside the coupler plug via a further contact element, it is provided that the cover element and the seals constitute a single part and therefore along with the cover element constitute one non-detachable unit. In this manner, it is assured that the seals, which enclose the individual wires that emerge from the coupler plug, can be mounted in one single working or assembly step.