Abstract:
Assemblies for creating graphic displays and art are disclosed. The assemblies include at least one vehicle that is capable of flight; a series of light emitting elements independently affixed to the vehicle or mounted to one or more radially extending elements; an axis around which the radially extending elements are configured to rotate; and at least one motor that is configured to cause the axis and the radially extending elements to rotate. Rotation of the radially extending elements generates a graphic display produced by the light emitting elements (through a “persistence of vision” optical illusion). Methods of using such assemblies are also disclosed, such as methods for producing a graphic display (including aggregated graphic displays), methods for creating three-dimensional structures, and methods for camouflaging aerial vehicles and other objects.
Abstract:
For context based compression techniques, for example Context Based YK compression, a method and system for grouping contexts from a given context model together to create a new context model that has fewer contexts, but retains acceptable compression gains compared to the original context model. According to an exemplary embodiment of the method empirical statistics are determined for a file type of a file to be compressed; and the context model is generated by iteratively grouping contexts of an initial context model in accordance with the empirical statistics, the context model having fewer contexts than an initial context model.
Abstract:
Systems and methods for distributing a clock signal are disclosed. In some embodiments, systems for distributing a clock signal include a plurality of resonant oscillators, each comprising an inductor; and a differential clock grid that distributes the clock signal. The differential clock grid is coupled to the plurality of resonant oscillators and the clock signal, and the inductances of the inductors are configured such that a resonant frequency of the plurality of resonant oscillators is substantially equal to the frequency of the clock signal.
Abstract:
For context based compression techniques, for example Context Based YK compression, a method and system for grouping contexts from a given context model together to create a new context model that has fewer contexts, but retains acceptable compression gains compared to the context model with more contexts is provided. According to an exemplary embodiment a set of files that are correlated to the file to be compressed (hereafter called training files) are read to determine, for an initial context model, the empirical statistics of contexts and symbols. In some embodiments, this includes determining the estimated joint and conditional probabilities of the various contexts and symbols (or blocks of symbols). The initial context model is then reduced to a desired number of contexts, for example, by applying a grouping function g to the original set of contexts to obtain a new and smaller set of contexts. In some embodiments the step of applying a grouping function comprises iteratively grouping a pair of contexts together to form a grouped context, wherein each grouped context represents a local minimum based on the empirical statistics.
Abstract:
A device to thermally couple a thermal management apparatus to at least one heat generating component of a circuit substrate includes at least a first portion that is adapted to couple to the thermal management apparatus, and at least a second portion that is adapted to couple to the thermal management apparatus. The first portion and the second portion may be symmetrically arranged relative to each other. The first portion and the second portion are adapted to thermally couple the thermal management apparatus to the heat generating component with a first spring bias. The first portion and the second portion are further adapted to maintain the thermal management apparatus thermally coupled to the heat generating component with a second spring bias.
Abstract:
A mobile communication device including an integrated stylus input unit to input data into the device, and an interface to wirelessly transmit data. In one embodiment, the integrated stylus is a handwriting stylus input device to input data by moving the stylus over a substantially flat surface. In one embodiment, the stylus includes a motion sensor embedded in an antenna extending from the device.
Abstract:
A method of determining, at a mobile device, side information including compression state information. The method includes receiving, from a server, a unique side information identifier identifying a unit of side information used by the server for compressing data, determining, based on the side information identifier, if the unit of side information is resident on said device, and if the unit of side information is resident on the mobile device, loading the side information for decompressing the data. Otherwise, if the unit of side information is not resident on the mobile device, the method includes requesting the unit of side information from one of the server and another device.
Abstract:
A device to thermally couple a thermal management apparatus to at least one heat generating component of a circuit substrate includes at least a first portion that is adapted to couple to the thermal management apparatus, and at least a second portion that is adapted to couple to the thermal management apparatus. The first portion and the second portion may be symmetrically arranged relative to each other. The first portion and the second portion are adapted to thermally couple the thermal management apparatus to the heat generating component with a first spring bias. The first portion and the second portion are further adapted to maintain the thermal management apparatus thermally coupled to the heat generating component with a second spring bias.
Abstract:
A method and apparatus to use a shielded enclosure for exchanging secure data. One embodiment comprises an enclosure formed of electromagnetically shielding material that prevents an electromagnetic field from entering an interior of the enclosure or emitting from the interior of the enclosure, the enclosure sized to house a mobile electronic device; a receiver within an interior of the enclosure to receive data transferred wirelessly from a mobile electronic device placed within the enclosure; and a hardware interface having a first end external to the enclosure and a second end within the interior of the enclosure and coupled to the antenna, the hardware interface to transfer data wirelessly received by the receiver to a separate device exterior to the enclosure.
Abstract:
A circuit for distributing a clock signal in an integrated circuit includes a capacitive clock distribution circuit. At least one additional inductor is formed in a metal layer of the integrated circuit and is coupled to the clock distribution circuit. The inductor, which may distributed throughout the integrated circuit, has an inductance value selected to resonate with impedance of the capacitive clock distribution circuit. By operating the clock distribution circuit at resonance, power dissipation is reduced while skew and jitter performance can be improved.