35results about How to "Maximize bandwidth" patented technology

In accordance with aspects of the present principles, the quality of voice traffic and bandwidth utilization for data communication over a wireless multi-hop network may be improved. In an implementation of the present principles, a data packet transmission rate over a wireless multi-hop network may be controlled at an interface between the multi-hop network and a wired network based on a voice packet quality measure calculated from network parameters. Voice and data traffic quality and efficiency may be further improved by reordering a packet transmission queue at the interface to avoid timeout and / or varying a packet queue length at the interface using an acknowledgement window transmitted to a data packet sender.

An apparatus for a wireless transmission of high data rate signals such as received from an optical interface including gigabit fiber channel or a sonet. The architecture combines direct detection of the optical signal with clock and data recovery circuit and a differential signal encoder which is preferably a differential quadrature phase shift encoder and modulator pair. A millimeter wave, local oscillator and up conversion chain converts the optical input signal to a microwave carrier. In the opposite direction, the down converted signal is non-coherently phase detected and fed to a pair of synchronized clock and data recovery circuits to recover I and Q channel signals. These recovered signals are then combined prior to re-timing before they are fed back to the optical transceiver.

An image display system is disclosed that enables users to navigate very large digital images quickly and seamlessly. The system is optimized to transmit image data from a disk drive at high data rates. The image data is stored on the disk drive in a file format optimized for high speed retrieval, display, and seamless navigation. The image display system can be cascaded for showing two or more contiguous images.

A reconfigurable free-space optical inter-rack network includes a plurality of server racks, each including at least one switch mounted on a top thereof, where each top-mounted switch includes a plurality of free-space-optic link connector, each with a free-space optical connection to a free-space-optic link connector on another top-mounted switch, a single ceiling mirror above the plurality of server racks that substantially covers the plurality of server racks, wherein the single ceiling mirror redirects optical connections between pairs of free-space-optic link connectors to provide a clear lines-of-sight between each pair of connected free-space-optic link connectors, and a controller that preconfigures a free-space optical network connecting the plurality of server racks by establishing connections between pairs of free-space-optic link connectors, and that reconfigures connections between pairs of free-space-optic link connectors in response to network traffic demands and events.

Disclosed is a contactor interconnect in an integrated circuit device test fixture comprises a plurality of contactor pins enabled to provide electrical contact with the contact points of an integrated circuit device, the contactor pins being mounted in the test fixture; and an electrical circuit coupled to two or more of the contactor pins of the test fixture, wherein the electrical circuit is isolated from other contactor pins of the plurality of contactor pins and wherein the electrical circuit is coupled to the two or more contactor pins by an electronically direct pathway.

A miniMAC implementation of a distributed CMTS in a hybrid fiber / coaxial (HFC) plant. The distributed CMTS comprises at least one network layer, at least one media access layer, and one or more physical layers. The at least one media access layer includes one or more miniMAC layers. The one or more miniMAC layers are remotely located from a remaining part of the at least one media access layer. The at least one network layer, the remaining part of the at least one media access layer, the one or more miniMAC layers, and the one or more physical layers each function as separate modules, enabling each layer to be in separate component locations of the HFC plant, yet having the at least one network layer connected to the remaining part of the at least one media access layer, the at least one media access layer connected to each of the one or more miniMAC layers, and each of the one or more physical layers connected to each of the one or more miniMAC layers. The one or more miniMAC layers are located in close proximity to the one or more physical layers in the HFC plant. The one or more miniMAC layers convert digital bit streams into packets and maintain timing constraints between the one or more miniMAC layers and the one or more physical layers.

In the subject three-axis pointing system, the elevation and tip mirror axes are permanently mounted with their rotation axes orthogonal to each other to eliminate gimbal lock over the hemisphere, to avoid high accelerations as the zenith or nadir pointing directions are approached, and to provide optimal two-axis beam pointing control.

An optical fiber communications apparatus comprises a housing provided with a motherboard and with a support defining plurality of card receptors. A plurality of modular cards (12, 13) are provided, each of which is engageable with the motherboard via one of the card receptors. A optical card (12) includes an optical transceiver (20) for communication using a digital, optical communications signal over a single optical fiber link (17). Each modular card (12, 13) is provided with a plurality of circuit sub-assemblies (16), each circuit sub-assembly being configured for digital communication with a respective local audio, video or data electronic device via a respective connector using a respective electronic information-carrying signal. Each circuit sub-assembly (16) is configured for communication of an audio, video or data information-carrying signal with the transceiver using the digital, optical communications signal. A processor having operating instructions is provided for ascertaining the number of modular cards engaged with the motherboard and the number of circuit sub-assemblies on each of the modular cards, and for assigning time slots for the individual information-carrying signals of the circuit sub-assemblies, thereby controlling transmission of communications between the optical transceiver and the circuit sub-assemblies, and time division multiplexing those communications over the single optical fiber link to communicate a predetermined combination of audio, video and data channels multiplexed onto a single optical channel carried by the optical fiber link. A further aspect of the invention relates to controlling the power of a signal RF input into a light source used for optical communication. The power may be regulated according to a determined noise and / or distortion of a signal RF input to the amplifier or may be varied so that it lies in a predetermined range.

A linear regulator and a method of regulating a supply voltage are provided. Embodiments include a linear regulator with a first feedback loop and a second feedback loop. The first feedback loop is characterized by a first bandwidth and a first gain. The first feedback loop includes a first amplifier characterized by an output impedance which is significantly reduced in order to maximize the bandwidth of the first feedback loop when driving the capacitance of a control input of a series pass element. The second feedback loop is characterized by a second bandwidth and a second gain. The second feedback loop includes a second amplifier that controls the current in the first amplifier in the first feedback loop.

A method to increase the bandwidth of a transimpedance amplifier using capactive feedback. The resultant amplifier maintains wide bandwidth, high linearity, low noise, and low input impedance independent of component variations. These characteristics greatly facilitate the economical measurement of small currents such as those arising from photodiodes and biological preparations.

A mobile wireless terminal (MWT) includes multiple wireless modems. The multiple modems have their respective transmit outputs combined to produce an aggregate transmit output. The multiple modems can concurrently transmit data in a reverse link direction and receive data in a forward link direction. The MWT is constrained to operate under an aggregate transmit power limit. Each of the multiple modems has an individual transmit limit related to the aggregate transmit power limit. When operating, over-limit ones of the multiple modems are deactivated and then reactivated to keep an aggregate transmit power of all of the modems below the aggregate limit, and to maximize data through-put on the forward and reverse links.

A mobile wireless terminal (MWT) includes multiple wireless modems. The multiple modems have their respective transmit outputs combined to produce an aggregate transmit output. The multiple modems can concurrently transmit data in a reverse link direction and receive data in a forward link direction. The MWT is constrained to operate under an aggregate transmit power limit. Each of the multiple modems has an individual transmit limit related to the aggregate transmit power limit. An MWT controller controls the total number of modems that transmit data at any given time, based on an average energy-per-transmitted bit, or alternatively, individual energy-per-transmitted bits of the modems.

A field-programmable gate array device (FPGA) having plural rows and columns of logic function units (VGB's) further includes a plurality of embedded memory blocks, where each memory block is embedded in a corresponding row of logic function units. Each embedded memory block has a registered address port for capturing received address signals in response to further-received, address-validating clock signals. Interconnect resources are provided for conveying the address-validating clock signals to address-changing circuitry so that a next address can be generated safely in conjunction with the capturing by the registered address port of a previous address signal.

Provided are a phase locked loop (PLL) apparatus and an operating method of the PLL apparatus including a PLL unit to provide a fixed frequency signal, a converter to convert, using the fixed frequency signal, a frequency of a first signal oscillated by a first voltage-controlled oscillator (VCO) based on a first control voltage, a first frequency divider to divide the converted frequency of the first signal, and a first phase comparator to compare the divided frequency of the first signal to an input first reference frequency and detect a first phase difference, wherein the first VCO may adjust the first control voltage based on the detected first phase difference to equalize the divided frequency of the first signal to the first reference frequency.

Described is a monolithic integrated circuit for use in quantum computing based on single and multiple coupled quantum dot electron- and hole-spin qubits monolithically integrated with the mm-wave spin manipulation and readout circuitry in commercial complementary metal-oxide-semiconductor (CMOS) technology. The integrated circuit includes a plurality of n-channel or p-channel metal-oxide-semiconductor field-effect transistor (MOSFET) cascodes each including a single-spin qubit or two coupled quantum dot qubits formed in an undoped semiconductor film adjacent at least one top gate. There is also a back gate formed in a silicon substrate adjacent a buried oxide layer or the at least one top gate, where the back gate controls the electron or hole entanglement and exchange interaction between the two coupled quantum dot qubits. The monolithic integrated circuits described may be used for monolithically integrated semiconductor quantum processors for quantum information processing.

The embodiment of the invention provides a data packet sending rate processing method and system, and the method comprises: a sending end sending a data packet to a receiving end according to an initial sending rate, and the initial sending rate comprises a first number of data packets sent in a unit time; the sending end receiving a second number of response messages which are returned by the receiving end and carry the data packets received by the receiving end, and judges whether the second number is equal to the first number or not; when the second number is equal to the first number, thesending end linearly increases the initial sending rate to obtain a first sending rate until the first sending rate meets a first requirement; when the second number is smaller than the first number or the first sending rate meets the first requirement, the sending end exponentially reduces the initial sending rate or the first sending rate to obtain a second sending rate until the second sendingrate meets the second requirement. According to the embodiment of the invention, the data packet sent to the receiving end by the sending end is prevented from being lost, and the bandwidth of the articulated naturality web link is utilized as much as possible.

Provided are chip antennas for near field communication and methods of manufacturing the chip antennas. A chip antenna for near field communication includes a substrate; a first antenna element on the substrate; and a second antenna element on the first antenna element. The substrate, the first antenna element, and the second antenna element are included in a single chip. The first and second antenna elements are formed outside the chip. The substrate is a lower layer including a plurality of devices. The first antenna element is a metal structure having a fish bone shape. The second antenna element is a dipole antenna.

This invention relates to a novel protein, termed INSP152, herein identified as a secreted protein, in particular, as a MAM domain containing protein and to the use of this protein and nucleic acid sequence from the encoding gene in the diagnosis, prevention and treatment.

In accordance with one embodiment of the present invention, a map of transmission slots for a port of a network element includes a plurality of hierarchical sets of port transmission slots. The hierarchical sets include a plurality of parent sets. Each parent set has its port transmission slots divided between a plurality of child sets. The child sets include interleaved port transmission slots.

A system and method of designing a fibre optic network for a plurality of premises in a geographic area that has existing infrastructure is described. They include electronically receiving fibre optic network design inputs that include data indicative of a plurality of nodes in the fibre optic network and data indicative of arcs extending between said nodes in the fibre optic network based on allocated bandwidth for said premises in the geographic area, electronically receiving existing infrastructure design inputs comprising data indicative of said existing infrastructure that can be used as geographic locations for said nodes and said arcs in the fibre optic network, electronically generating design outputs by optimising geographic locations of said nodes and said arcs in the fibre optic network using said fibre optic network design inputs and said existing infrastructure inputs, and electronically outputting the design outputs.

A solar cell includes a thin film photovoltaic material structure used in absorbing light of a selective bandwidth. A multitude of dielectric front coatings are positioned on the thin film photovoltaic material structure so as to maximize admittance over the selected bandwidth. The thicknesses and indices of each of the front coatings are chosen by a global-optimization procedure to maximize the short-circuit current of the solar cell.

Disclosed is a data cache or data management device for caching data between at least one processor and at least one memory, and supporting an artificial neural network (ANN) operation executed by the at least one processor. The data cache device or the data management device can comprise an internal controller for predicting the next data operation request on the basis of ANN data locality of the ANN operation. The internal controller monitors data operation requests associated with the ANN operation from among data operation requests actually made between the at least one processor and the at least one memory, thereby extracting the ANN data locality of the ANN operation.

A source of optical supercontinuum radiation comprises a length of microstructured optical fibre and a pump laser adapted to generate lasing radiation at a pump wavelength. The length of microstructured optical fibre is arranged to receive lasing radiation at the pump wavelength to generate optical supercontinuum radiation and comprises a core region and a cladding region which surrounds the core region. The source of optical supercontinuum radiation is arranged such that at a location along the length of the microstructured optical fibre (a) the microstructured optical fibre comprises a group index (GI) versus wavelength curve having a zero crossing wavelength (ZCW) at which the group velocity dispersion has a zero crossing and such that the GI increases for wavelengths away from the ZCW such that the curve includes group indices that are greater than the GI at the ZCW for wavelengths greater than as well as less than the ZCW; (b) light having a wavelength of greater than 2000 nm propagates along the length of microstructured optical fibre and has a GI that is matched to the GI of light that propagates along the length of microstructured optical fibre and that has a wavelength of less than 400 nm; and (c) the pump wavelength is within 200 nm of the ZCW.