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286results about How to "Avoid tracking" patented technology

Digital License Sharing System and Method

A digital license sharing method, system and apparatus is provided for use in a digital rights management system. Usage rights in respect of digital content are transferred between content player devices or applications by associating with each player a status indication. Transfer is carried out by transmitting a request to obtain the usage rights from a player requiring usage rights to a player currently holding the rights. The transferring player sets a first status indication to indicate that it is no longer entitled to exercise the rights, and transmits a response to the requesting player to transfer the usage rights. The requesting player then sets a second status indication to indicate that it is henceforth entitled to exercise the rights. Methods and apparatus for creating transferable licenses are also provided that employ a sharable license format including a validated portion and an unvalidated portion. The validated portion, which may be, for example, digitally signed by a license issuing authority, includes characteristic information of a digital content decryption key required to access the digital content controlled by the license. The unvalidated portion includes the digital content key itself, encrypted using an encryption key associated with a player entitled to use the license.
Owner:SMART INTERNET TECH CRC

High-precision maximum power point tracing method

The invention relates to a high-precision maximum power point tracing method, which is an MPPT algorithm combining variable step-size optimization and a disturbance observation method based on power prediction, i.e. a variable step-size disturbance observation method based on the power prediction. The high-precision maximum power point tracing method can overcome the defects of the conventional disturbance observation method, the variable step-size disturbance observation method, and the like, solve the problems of failure judgment, local maximum power, and the like and quickly and precisely trace a maximum power point.
Owner:SUNGROW POWER SUPPLY CO LTD

Watermarking electronic text documents

A text watermarking method embeds an auxiliary message in an original electronic text document to form a watermarked text document. The method applies a spreading function to message symbols to spread the symbols over a carrier, which forms a modulated carrier. It maps elements of the modulated carrier to corresponding inter-word spaces in the electronic text document, and applies an embedding function to modify the corresponding inter-word spaces according to elements of the modulated carrier signal such that the modified inter-word spaces hide the modulated carrier signal in the watermarked text document. The message symbols are automatically decodable from the watermarked document without the original electronic text document. A compatible decoder extracts the auxiliary message from a printed or electronic watermarked text document. The decoder automatically measures inter-word spaces in the watermarked text document. It estimates elements of a modulated carrier signal embedded in the inter-word spaces to form an estimated modulated carrier signal, and applies a de-spreading function to the estimated modulated carrier signal to extract message symbols.
Owner:DIGIMARC CORP (FORMERLY DMRC CORP)

Dual-Loop Dynamic Fast-Tracking MPPT Control Method, Device, and System

ActiveUS20110175454A1Improve response dynamic and overall recovered powerFast dynamic responseDc network circuit arrangementsAc-dc network circuit arrangementsDual loopFast tracking
A converter unit to improve the response dynamics and overall recovered power in a photovoltaic array configuration. Each photovoltaic panel in the photovoltaic array may be coupled to a respective converter unit, which may include a controller to sense an output voltage and output current produced by the solar panel, and control operation of a power converter to output modified voltage and current corresponding to the solar panel onto a bus coupling the converter units. The controller may operate as an analog or (digital) firmware control system to regulate the input voltage of each power converter unit under indirect guidance of a Maximum Power Point Tracking (MPPT) controller to optimize and regulate the resultant power, and achieve very fast dynamic response to environmental transients. Input voltage and output voltage management may be achieved by way of a fast inner control loop and a corresponding MPPT control system configured as an outer guidance loop providing a reference signal to the inner control loop.
Owner:BLUED ACQUISITION CORP

Frameless track assembly

ActiveUS20120161511A1Prevent collection of abrasive materialAvoid trackingPortable liftingEndless track vehiclesSprocketEngineering
A track assembly comprising an endless track trained about a sprocket and forward and aft sets of idler wheels. A plurality of apertures at the sprocket engage drive lugs that project from an interior track surface. Longitudinal stabilizer arms restrain the idler wheel axles, idler wheels, sprocket support rollers, sprocket and track against lateral movement and tension the track. Overlapping seals are formed at the idler wheels and / or sprocket support rollers. Alternative sprockets having cutouts or pockets that capture different drive lug configurations are also disclosed along with several alternative track tensioning assemblies that rotate in an eccentric fashion to tension the track.
Owner:BRAZIER GLEN

Method and device for obtaining item information using RFID tags

Methods and devices for enabling a user to obtain item information relating to an item (10), the item having associated therewith an item identification means (12) and an RFID response means (14) arranged to provide a predetermined response on being subjected to a currently applicable trigger signal; the method comprising steps of: establishing from the item identification means (12) item identification information; using the item identification information to determine from an item information source (30) a currently applicable trigger signal for the RFID response means (14); subjecting the RFID response means (14) to the currently applicable trigger signal; receiving a predetermined response from the RFID response means (14); and using the predetermined response to obtain item information from the item information source (30); wherein the RFID response means (14) is arranged to generate a new currently applicable trigger signal and a new predetermined response associated therewith following subjecting of the RFID response means (14) to the currently applicable trigger signal.
Owner:BRITISH TELECOMM PLC

Software defined networking system

The invention relates to a Communications system, in particular, a software defined networking communications system, comprising at least one network device comprising at least one data forwarding unit configured to forward at least one data packet, wherein the network device comprises at least one first peer-to-peer module, wherein the first peer-to-peer module is configured to communicate with at least one peer-to-peer application of at least one peer-to-peer network, wherein the peer-to-peer application comprises at least one controlling means configured to manage at least the network device.
Owner:INNOGY INNOVATION GMBH

OFDM-MFSK underwater acoustic communication broadband Doppler estimation and compensation method of known sub-carrier frequency

The invention discloses an OFDM-MFSK underwater acoustic communication broadband Doppler estimation and compensation method of known sub-carrier frequency, and belongs to the field of the underwater acoustic communication. The content disclosed by the invention is specifically as follows: a transmitting end adds a plurality of sub-carries and inserts a pulse pair signal into each OFDM-MFSK data symbol; a receiving end intercepts the pulse pair signal and data, and performs coarse estimation on the Doppler factor, and determines the Doppler frequency deviation search range of each known frequency sub-carrier; performing over-sampling processing on each OFDM-MFSK data block, and computing a mean Doppler factor of the current data block; and then computing new locations of all sub-carriers ofthe whole data block after being influenced by the Doppler, and finishing the broadband Doppler compensation by extracting the corresponding data. By using the method disclosed by the invention, theaccurate estimation and compensation of the broadband Doppler in the underwater OFDM-MFSK communication system can be realized only through once data over-sampling, the process of resampling the datain the traditional Doppler estimation and compensation method is avoided, and the computing efficiency is improved.
Owner:HARBIN ENG UNIV

Image analyzing apparatus, image analyzing method, and computer readable medium

Provided is an image analyzing apparatus for efficiently performing detection of an object and tracking of a specified object, including a feature value recording section that records a plurality of reference feature values different in type from each other; a feature value extracting section that extracts a plurality of feature values different in type from each other, from each of a plurality of moving image constituent images included in a moving image; an object extracting section that extracts an object from the moving image constituent images, based on a degree of matching of the plurality of extracted feature values with respect to the plurality of reference feature values recorded in the feature value recording section; a reference feature value calculating section that calculates, from the plurality of reference feature values recorded in the feature value recording section, a plurality of reference feature values adjusted to the feature values of the extracted object, to a predetermined degree corresponding to the type; and a feature value updating section that updates the plurality of reference feature values recorded in the feature value recording section, with the plurality of reference feature values calculated by the reference feature value calculating section.
Owner:FUJIFILM CORP
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