Abstract: Methods and systems are described for obtaining a set of carrier-modulated symbols of a carrier-modulated codeword, each carrier-modulated symbol received via a respective wire of a plurality of wires of a multi-wire bus, applying each carrier-modulated symbol of the set of carrier-modulated symbols to a corresponding transistor of a set of transistors, the set of transistors further connected to a pair of output nodes according to a sub-channel vector of a plurality of mutually orthogonal sub-channel vectors, recovering a demodulation signal from the carrier-modulated symbols, and generating a demodulated sub-channel data output as a differential voltage on the pair of output nodes based on a linear combination of the set of carrier-modulated symbols by controlling conductivity of the set of transistors according to the demodulation signal.

Abstract: A medical device may include a shalt extending between a proximal end and a distal end. The shaft may include a lumen therein. The medical device may include a handle coupled to the proximal end of the shaft and may include a mode selector. The mode selector may be adapted to transition between a first mode and a second mode of the medical device. The medical device may further include a compressed fluid source. In the first mode, the compressed fluid source may be fluidly coupled with the shaft so as to impart a negative pressure in at least a portion of the lumen. In the second mode, the compressed fluid source may be fluidly coupled with the shaft so as to impart a positive pressure in the at least a portion of the lumen.

Abstract: Medical implants comprising biocompatible materials and having surface features that may assist in biocompatibility upon implantation in the body are described. Methods for manufacturing such implants are also described. The manufacturing process may include applying a biocompatible material to a texturized surface of a mold. The implants may include various features to assist their positioning, fixation, and/or identification during and/or after implantation.

Abstract: Methods and systems are described for generating a process-voltage-temperature (PVT)-dependent reference voltage at a reference branch circuit based on a reference current obtained via a band gap generator and a common mode voltage input, generating a PVT-dependent output voltage at an output of a static analog calibration circuit responsive to the common mode voltage input and an adjustable current, adjusting the adjustable current through the static analog calibration circuit according to a control signal generated responsive to comparisons of the PVT-dependent output voltage to the PVT-dependent reference voltage, and configuring a clocked data sampler with a PVT-calibrated current by providing the control signal to the clocked data sampler.

Abstract: Methods and systems are described for receiving an input data voltage signal at a first data decision circuit of set of pipelined data decision circuits, receiving an aggregate decision feedback equalization (DFE) correction current signal from a first analog current summation bus, the aggregate DFE correction current signal comprising a plurality of DFE tap-weighted currents from respective other data decision circuits of the set of pipelined data decision circuits, determining a data output decision value based on the received input data voltage signal and the received aggregate DFE correction current signal, and generating at least one outbound DFE tap-weighted current on at least one other analog current summation bus connected to at least one other data decision circuit of the set of pipelined data decision circuits.

Abstract: The invention provides new devices for implantation in a patient having irregular textured surfaces, which devices show significantly improved cellular response compared to conventional smooth and textured implants, indicating that significantly improved biocompatibility would be achieved in vivo. Methods for making such new devices and surface textures are also disclosed.

Abstract: Methods and systems are described for receiving symbols of a codeword via wires of a multi-wire bus, the codeword representing an aggregate sum of a plurality of sub-channel constituent codewords, each sub-channel constituent codeword representing a weight applied to an associated sub-channel vector of a plurality of sub-channel vectors of an orthogonal matrix, generating a plurality of comparator outputs using a plurality of common-mode resistant multi-input comparators (MICs), each common-mode resistant MIC having a set of input coefficients representing a corresponding sub-channel vector of the plurality of sub-channel vectors, each sub-channel vector (i) mutually orthogonal and (ii) orthogonal to a common-mode sub-channel vector, outputting a set of forward-channel output bits formed based on the plurality of comparator outputs, obtaining a sequence of reverse-channel bits, and transmitting the sequence of reverse-channel bits by sequentially transmitting common-mode codewords over the wires of the multi-

Abstract: An efficient communications apparatus is described for a vector signaling code to transport data and optionally a clocking signal between integrated circuit devices. Methods of designing such apparatus and their associated codes based on a new metric herein called the “ISI Ratio” are described which permit higher communications speed, lower system power consumption, and reduced implementation complexity.

Abstract: An aperture array comprises apertures arranged over one or more dimensions. Each aperture is configured to receive a respective portion of a received optical wavefront. Each aperture is coupled to a respective optical mixer that coherently interferes the respective portion of the received optical wavefront with a respective local oscillator optical wave. A processing module is configured to process electrical signals detected from outputs of the optical mixers, including: for each optical mixer, determining at least one phase/amplitude information from at least one electrical signal detected from at least one output of that optical mixer, determining direction-based information, associated with a subset of the field of view, based on phase/amplitude information derived from at least two optical mixers of the plurality of optical mixers, and determining distance information from the direction-based information.

Abstract: Generating a composite interpolated phase-error signal for clock phase adjustment of a local oscillator by forming a summation of weighted phase-error signals generated using a matrix of partial phase comparators, each of which compare a phase of the local oscillator with a corresponding phase of a reference clock.

Abstract: Methods and systems are described for generating, at a plurality of delay stages of a local oscillator, a plurality of phases of a local oscillator signal, generating a loop error signal based on a comparison of one or more phases of the local oscillator signal to one or more phases of a received reference clock, generating a plurality of phase-specific quadrature error signals, each phase-specific quadrature error signal associated with a respective phase of the plurality of phases of the local oscillator signal, each phase-specific quadrature error signal based on a comparison of the respective phase to two or more other phases of the local oscillator signal, and adjusting each delay stage according to a corresponding phase-specific quadrature error signal of the plurality of phase-specific quadrature error signals and the loop error signal.

Abstract: Multi-drop communications channels can have significantly deep notches in their frequency response causing a corresponding limitation of the effective data transmission rate. A special time-ordered coding method is described which results in the emitted spectrum of the data stream transmitted into the channel having a notch at the same frequency as the notch in the channel frequency response, permitting channel receivers to successfully decode the transmitted data stream. The described coding method may be applied at various multiples of the channel notch frequency to support different throughput rates, and may be combined with other coding techniques such as group or vector signaling codes.

Abstract: Obtaining a periodic test signal, sampling the periodic test signal using a sampling element according to a sampling clock to generate a sampled periodic output, the sampling element operating according to a supply voltage provided by a voltage regulator, the voltage regulator providing the supply voltage according to a supply voltage control signal, comparing the sampled periodic output to the sampling clock to generate a clock-to-Q measurement indicative of a delay value associated with the generation of the sampled periodic output in response to the sampling clock, generating the supply voltage control signal based at least in part on an average of the clock-to-Q measurement, and providing the supply voltage to a data sampling element connected to the voltage regulator, the data sampling element being a replica of the sampling element, the data sampling element sampling a stream of input data according to the sampling clock.

Abstract: Methods and systems are described for generating, with a local oscillator and an adjustable phase interpolator, a data-sampling clock and a variable-phase-offset eye-measurement clock, forming a received data signal using a multi-input comparator, generating, using a data slicer and the data sampling clock, a receive sample of the received data signal, and generating, using at least one eye slicer and the variable-phase-offset eye-measurement clock, a plurality of eye characteristic measurements by adjusting a sampling threshold of the at least one eye slicer and a phase offset of the variable-phase-offset eye-measurement clock.

Abstract: Methods and systems are described for generating multiple phases of a local clock at a controllable variable frequency, using loop-connected strings of active circuit elements. A specific embodiment incorporates a loop of four active circuit elements, each element providing true and complement outputs that are cross-coupled to maintain a fixed phase relationship, and feed-forward connections at each loop node to facilitate high frequency operation. A particular physical layout is described that maximizes operating frequency and minimizes clock pertubations caused by unbalanced or asymmetric signal paths and parasitic node capacitances.

Abstract: An aperture array comprises apertures arranged over one or more dimensions. Each aperture is configured to receive a respective portion of a received optical wavefront. Each aperture is coupled to a respective optical mixer that coherently interferes the respective portion of the received optical wavefront with a respective local oscillator optical wave. A processing module is configured to process electrical signals detected from outputs of the optical mixers, including: for each optical mixer, determining at least one phase/amplitude information from at least one electrical signal detected from at least one output of that optical mixer, determining direction-based information, associated with a subset of the field of view, based on phase/amplitude information derived from at least two optical mixers of the plurality of optical mixers, and determining distance information from the direction-based information.

Abstract: A mapping method is disclosed that includes (i) memorizing at least one reference image of an environment to be mapped containing a specific arrangement of a plurality of markers organized in cells; wherein each cell is identified by a marker or by a combination of markers; the plurality of markers comprising at least a number of different types of markers equal to a type-number; (ii) detecting, by a moving video camera, a video sequence wherein the environment to be mapped is, at least in part, framed; (iii) identifying in at least one frame of the video sequence one or more cells being part of the specific arrangement of markers of the reference image; and (iv) calculating, on the basis of the data regarding the identified cells, at least one homography for the perspective transformation of the coordinates acquired in the video sequence into coordinates in the reference image and vice versa.

Abstract: The detection matrix for an Orthogonal Differential Vector Signaling code is typically embodied as a transistor circuit with multiple active signal inputs. An alternative detection matrix approach uses passive resistor networks to sum at least some of the input terms before active detection.

Abstract: Methods and systems are described for receiving a set of input bits at a plurality of drivers and responsively generating an ensemble of signals, each respective signal of the ensemble of signals generated by receiving a subset of input bits at a respective driver connected to a respective wire of a multi-wire bus, the received subset of bits corresponding to sub-channels associated with the respective wire, generating a plurality of weighted analog signal components, each weighted analog signal component (i) having a corresponding weight and sign selected from a set of wire-specific sub-channel weights associated with the respective wire and (ii) modulated by a corresponding bit of the received subset of bits, and generating the respective signal by forming a summation of the plurality of weighted analog signal components at a common node connected to the respective wire for transmission over the respective wire of the multi-wire bus.

Abstract: The invention provides new devices for implantation in a patient having irregular textured surfaces, which devices show significantly improved cellular response compared to conventional smooth and textured implants, indicating that significantly improved biocompatihility would be achieved in vivo. Methods for making such new devices and surface textures are also disclosed.