721 results about "Signal transformation" patented technology

An apparatus and method of operation for measuring forces applied to a wearer's foot, the apparatus providing an indication to the wearer when forces on the foot exceed pre-selected upper limits or do not meet pre-selected lower limits. A body member is disclosed for attachment around the wearer's foot, the body member having an exterior sole and an interior sole portion covered by a rigid foot plate. The foot plate includes an upper support surface for contact with the foot. The interior sole portion includes at least one cavity within, with a force sensing unit attachable partially within the cavity. At least one strain gage is positioned at a midpoint on the force sensing unit, and the force sensing unit is connectable to the underside of the foot plate. An electronic means is mounted within the cavity and is electrically connected to the at least one strain gage. The electronic means receives electronic signals from the strain gage, the signals in proportion to force applied onto the force sensing unit when the wearer's foot applies weight onto the foot plate, with conversion of the signals to output signals for transmission to a signal processing means in a remotely located receiver and display unit. The display unit compares the output signals to upper limits and lower limits, and displays alarms when output signals do not reach lower limits, or exceed upper limits, therefore assisting with therapeutic rehabilitation of an injured lower extremity.

A method of measuring Photoplethysmography (PPG) signals may comprise detecting dual wavelength illumination from a light detector so as to provide detected signals, converting the detected signals into digital signals so as to provide digital signals, reducing noises from the digital signals and increasing independency between the digital signals so as to provide preprocessed signals, subtracting the average value from the preprocessed signals so as to provide adjusted signals, obtaining whitening matrix based on covariance, eigen value, and eigen matrix obtained from the adjusted signals, and restoring data using the whitening matrix.

A method of measuring Photoplethysmography (PPG) signals may comprise detecting dual wavelength illumination from a light detector so as to provide detected signals, converting the detected signals into digital signals so as to provide digital signals, reducing noises from the digital signals and increasing independency between the digital signals so as to provide preprocessed signals, subtracting the average value from the preprocessed signals so as to provide adjusted signals, obtaining whitening matrix based on covariance, eigen value, and eigen matrix obtained from the adjusted signals, and restoring data using the whitening matrix.

Respiratory-based biofeedback devices, systems, and methods are provided. A respiratory biofeedback method includes producing a respiratory signal in response to a user's respiratory activity, generating an audio output signal that includes a modified version of the respiratory signal, and converting the audio output signal into sound waves output to the user to provide biofeedback. The sound waves can be output to the user in real time response to the user's respiratory activity. A microphone can be used to generate the respiratory signal. The generated audio output signal can includes the respiratory signal modified to increase a volume level of a portion of the respiratory signal where the volume level exceeds a specified volume level.

A method for transforming three color-input signals (R, G, B) corresponding to three gamut-defining color primaries of a display to four color-output signals (R′, G′, B′, W) corresponding to the gamut-defining color primaries and one additional primary of the display, where the additional primary has color that varies with drive level, comprising: a) determining a relationship between drive level of the additional primary and intensities of the three gamut-defining primaries which together produce equivalent color over a range of drive levels for the additional primary; and b) employing the three color-input signals R, G, B and the relationship defined in a) to determine a value for W of the four color-output signals, and modification values to be applied to one or more of the R, G, B components of the three color-input signals to form the R′, G′, B′ values of the four color-output signals.

Using at least one MIMO-capable transceiver allows weighting calculations for signals transmitted and received, and enables individual packets to adapt, in a scalable, flexible, and responsive fashion to the real-world dynamics of a continuously varying communications network environment. The method and system of this invention use adaptively-derived diversity means to rapidly and efficiently distinguish the desired signal from noise, network interference, and external interference impinging on the network's transceivers and can transmit with lessened overhead. ADC operations and signal transformations continuously update combiner weights to match dynamically-varying environmental and traffic conditions, thereby continuously matching necessitated signal and waveform transformations with environmental and signal effects and sources. Successive iterations of the adaptation algorithm let each node's multiport combiner and distribution weights approach the MIMO channel's Shannon capacity in high-rate networks, or to minimize power needed to close links at a specified rate in low-rate networks, e.g. Voice-Over-IP networks.

A system for controlling an OLED device having an output that changes with time or use is described, comprising: a) an OLED device responsive to a corrected input signal having one or more light emitting elements and a temperature sensor for sensing the temperature of the OLED device to produce a temperature signal; b) a controller including: i) a first calculation circuit responsive to the temperature signal, a corrected digital input signal, and a pre-determined aging function to produce a digital aging value corresponding to the aging of the light emitting elements; ii) an accumulation circuit for integrating the digital aging value over time to provide a digital accumulated aging value; iii) a second calculation circuit responsive to the digital accumulated aging value for calculating a digital correction signal; and iv) a transformation circuit responsive to a digital input signal and the digital correction signal for transforming the digital input signal to the corrected digital input signal.

A satellite effective load management system and management method, the system comprises a load distributor, a storage module, a signal transformation processing module, a data multiple connection module and a center processor module, the modularization, integration, standardization effective load management system design conception provided by the invention integrates the data transmission, telemetering measurement remote control, power supply management to be centralized, meanwhile the standard, configurable effective load interface can be designed, so that the resource configuration and the interface configuration of the system are fixed and uniformed, the matching performance problem of effective load managing each task can be effectively solved, the good software and hardware platforms can be provided for time sequence, information and safety management of effective load management, thereby improving the effective load management design level and reducing the complicated degree, corresponding weight and power consumption and so on of the effective load management system, certain basis can be established for improving the whole star performance.

The invention relates to an intelligent insomnia therapeutic instrument, aiming at providing a therapeutic instrument which can induce and regulate potential action of the sleep center of a patient so as to accelerate the falling asleep speed of the patient and improve the sleep quality or realize a natural timing awaking function. The technical proposal is as follows: the instrument comprises a signal output module generating time varying magnetic fields, a bipolar electrode brain wave acquiring module acquiring real-time brain waves of the patient and a main controller obtaining the brain waves and carrying out down-conversion or up-conversion, wherein the signal output module converts digital brain signals output by the main controller into analogue signals which are amplified so as to drive a magnetic field generator to generate time varying magnetic fields used for treating.

In various embodiments, a dynamic range converter includes a first color space converter to convert a source color space of a source video having a source dynamic range to nonlinear color space signals. A linearizer configured converts the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function. A color volume transformer applies dynamic color transform metadata associated with the source video to generate master adjusted color space signals from the linearized color space signals. A delinearizer converts the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range. A second color space converter converts the nonlinearized color space signals to display domain signals. Other embodiments are disclosed.

Conventional audio compression technologies perform a standardized signal transformation, independent of the type of the content. Multi-channel signals are decomposed into their signal components, subsequently quantized and encoded. This is disadvantageous due to lack of knowledge on the characteristics of scene composition, especially for e.g. multi-channel audio or Higher-Order Ambisonics (HOA) content. An improved method for encoding pre-processed audio data comprises encoding the pre-processed audio data, and encoding auxiliary data that indicate the particular audio pre-processing. An improved method for decoding encoded audio data comprises determining that the encoded audio data had been pre-processed before encoding, decoding the audio data, extracting from received data information about the pre-processing, and post-processing the decoded audio data according to the extracted pre-processing information.

Methods, sensors, and systems for determining a concentration of glucose in a medium of a living animal are disclosed. Determining the glucose concentration may involve emitting excitation light from a light source to indicator molecules, generating a raw signal indicative of the amount of light received by a photodetector, purifying and normalizing the raw signal, and converting the normalized signal to a glucose concentration. The purification may involve removing noise (e.g., offset and / or distortion) from the raw signal. The purification and normalization may involve tracking the cumulative emission time that the light source has emitted the excitation light and tracking the implant time that has elapsed since the optical sensor was implanted. The purification and normalization may involve measuring the temperature of the sensor. The purification, normalization, and conversion may involve using parameters determined during manufacturing, in vitro testing, and / or in vivo testing.

A system for controlling a body part includes a number of sensing devices that sense signals from a hemisphere of a brain. A signal translating unit translates the signals into a command signal for controlling the body part, which is on a same side of the body as the hemisphere of the brain. A prosthetic device receives the command signal from the signal translating unit and manipulates the body part in response to the command signal.

The invention provides a method for simultaneously measuring high-pressure gas absorption capacity and adsorption sell capacity of coal petrography and measuring equipment, which can simultaneously measure the adsorption capacity and adsorption swell capacity of the coal petrography in high-pressure gas at a pressure of 0-20MPa and a temperature of 0-80 DEG C. In the process of measurement, a measurement and control device is used for performing signal transformation and analog-to-digital conversion on electrical signals of a displacement sensor, a temperature-measuring hot resistor and a pressure transmitter; a computer is used for automatically receiving pressure, temperature and displacement signal data from the measurement and control device and recording and saving the received data; and a computer screen is used for displaying the pressure, temperature, adsorption capacity and swell capacity data timely in the process of measurement and the change law curves of the pressure, the temperature and the swell capacity with the change of time in real time. In the method of the invention, the measurement on the adsorption capacity and the adsorption swell capacity can be finished simultaneously, so that the method is simple and convenient and fast, and has the advantages of simple structure, reliable and safe high-pressure seal, easy operation, high measurement accuracy, high resistance to pressure and automatic measurement.

A method compresses a set of correlated signals by first converting each signal to a sequence of integers, which are further organized as a set of bit-planes. This can be done by signal transformation and quantization. An inverse accumulator is applied to each bit-plane to produce a bit-plane of shifted bits, which are permuted according to a predetermined permutation to produce bit-planes of permuted bits. Each bit-plane of permuted bits is partitioned into a set of blocks of bits. Syndrome bits are generated for each block of bits according to a rate-adaptive base code. Subsequently, the syndrome bits can be decompressed in a decoder to recover the original correlated signals. For each bit-plane of the corresponding signal, a bit probability estimate is generated. Then, the bit-plane is reconstructed using the syndrome bits and the bit probability estimate. The sequence of integers corresponding to all of the bit-planes can then be reconstructed from the bit probability estimates, and the original signal can be recovered from the sequences of integers using an inverse quantization and inverse transform.

Provided is an apparatus and method for controlling legacy home appliances based on Zigbee wireless communication. The apparatus includes a home appliances control signal receiving unit for receiving a home appliances control signal from a user; a signal analyzing unit for analyzing the home appliances control signal and identifying a corresponding home appliance; a Zigbee coordinator for transforming the home appliances control signal into a Zigbee signal and transmitting the Zigbee signal to the identified home appliance; a Zigbee signal receiving unit for receiving the Zigbee signal from the Zigbee coordinator; an identification (ID) analyzing unit for analyzing the ID of the transmitted Zigbee signal; a signal transform unit for transforming the Zigbee signal into an infrared rays remote control signal; and an infrared rays signal transmitting unit for transmitting the infrared rays remote control signal to the infrared rays receiving unit.

A computer system for changing signals to separately value components temporally decomposed from residential property, the computer system including: an input device operable for converting input data representing the residential property into input signals representing the input data; a computer having a processor, the processor connected to the input to receive the input computer signals, the processor programmed to change the input signals to produce modified signals representing a separate market-based valuation of each of a plurality of components temporally decomposed from the property, the components including a residential estate for years interest and a residential remainder interest; and an output device connected to the processor to convert the modified signals into an illustration including the respective valuation of each of the components.

The invention discloses a locomotive semi-physical simulation device, system and method. The device comprises a real-time simulation unit, a computer and an electrical signal conversion unit. The computer converts a control instruction for simulating an upper-layer network control system into a bus communication protocol, and then sends the bus communication protocol to a communication conversion unit of the electrical signal conversion unit. The communication conversion unit sends the control instruction to an external physical controller, the physical controller outputs a control signal to a controlled object model according to the control instruction, the control signal is sent to a real-time simulation unit via the electrical signal conversion unit, the real-time simulation unit calculates a output result of a state signal of the controlled object model according to the control signal, the output result is sent to the physical controller via the electrical signal conversion unit, and the physical controller sends the state signal of the controlled object model back to the computer via the communication conversion unit. The technical problems that simulation integrity and precision of an existing system are not high, function verification cannot be accurately performed, the modification period is long, and efficiency and performability are low are solved.

The invention relates to a vision artificial element as medical tool, wherein it comprises that micro camera false eye and needle micro electrode array which can be planted into orbit; said micro camera false eye comprises solar energy battery board or charge device, micro optical lens group, photoelectric converter, signal processing converter, false eye base, and false eye sheet; the solar-energy battery board or charge device, micro optical lens group, photoelectric converter and signal processing converter are packed into false eye base; the signal processing converter is outside the false eye base; the micro camera false eye is planted into the orbit; the needle micro electrode array comprises base, micro electrode, inner wire, interface base, fixing hole, wire, and fixing plate; the fixing plate is fixed on the skull; the micro electrode via the drill hole of skull enters into vision layer; the vision electric signal via wire is transmitted into micro electrode array. The invention can improve the spatial accuracy of false eye.

A breath monitor includes: a plurality of sensors for detecting a load derived from a human lying on a bed and for outputting a sensor signal corresponding to the load; and breath signal computation means. The sensors are disposed under the human with a predetermined arrangement. The breath signal computation means converts each sensor signal to a frequency domain so that a spectrum of each sensor signal is obtained, selects the sensors on the basis of the converted sensor signals, and computes a breath signal on the basis of the sensor signals outputted from the selected sensors.

Systems, methods and apparatuses are provided for allowing a user to supervise personal exposure to a program exhibited by a consumer electronics device, such as, e.g., a television system. The consumer electronics device includes a facial recognition system and media rating enforcement circuitry that analyzes a program signal and either blocks or passes the program signal based on certain content and viewer based criteria and also, in the alternative, time based criteria. In this connection, a user can program the enforcement circuitry with the content and viewer based criteria in the form of one or more viewing profiles comprising viewer specifications and content-based specifications associated with the viewer specifications, and, which specify a rating and / or a subject matter category. The enforcement circuitry receives one or more viewer indicators from a facial recognition system that are indicative of the viewers present in a viewing area and one or more content-based indicators, which are indicative of a rating and / or a subject matter category of the program. The enforcement circuitry compares the viewer indicators with the viewer specifications and then the content-based indicators with the content-based specifications. Based on this comparison, the enforcement circuitry either passes the program signal to an output device for transformation of the program signal into the program or blocks the program signal from being sent to the output device.

The invention relates to an echo cancellation method and system for a speech recognition front end. The echo cancellation method mainly comprises the steps of time-frequency domain signal transformation, echo signal and residual signal estimation, sub-band signal power spectrum and cross correlation coefficient calculation, nonlinear processing based on a gain function of cross correlation coefficients, frequency-time domain transformation and the like to finally output signals without echoes. The single-channel echo cancellation method is adopted for processing frequency-domain echoes under avehicle-mounted condition or in other application scenes, and has the advantages of small calculation amount and high convergence speed.

Drone-based wireless communications systems are provided, as are methods carried-out by such wireless communications systems. In one embodiment, the wireless communications system includes a Satellite Signal Transformation (SST) unit and a plurality of aerial network drones, which can be deployed over a designated geographical area to form a multi-drone network thereover. During operation, the SST unit transmits a network source signal, which contains content extracted from a satellite signal. The multi-drone network receives the network source signal, disseminates drone relay signals containing the content through the multi-drone network, and broadcastings user device signals containing the content over the designated geographical area. In embodiments, the multi-drone network may broadcast multiple different types of user device signals for reception by various different types of user devices located within the designated geographical area, such as an area containing communication infrastructure disabled by a natural disaster, a hostile attack, or other catastrophic event.

A channel estimation section 112 estimates the states of channels used for pieces of mobile station apparatus (A) and (B), using signals demodulated by radio processing sections 110, 111. A best SIR calculation section 118 calculates coefficients to be used for signal transformation by inverse matrix calculation, using the above channel estimation values by the above channel estimation section 112. A signal transformation section 119 performs linear transformation of transmission signals to the above pieces of mobile station apparatus, using the above coefficients from the above best SIR calculation section 118. Radio processing sections 120, 121 modulates each transmission signal after the above linear transformation for transmission through antennas 108, 109, respectively.

Methods, circuits, and systems for time encoder-based unmixing of hyperspectral imaging data are disclosed. A method of unmixing hyperspectral imaging data includes receiving mixed image data of one or more pixels. The mixed image data is generated by an imaging device that captures hyperspectral data. The mixed image data includes sensed spectral band intensities of materials in an area represented by a particular pixel. The mixed image data is converted from first analog domain signals into pulse domain signals. A solution to a mixing equation in the pulse domain is generated to identify abundances of one or more of the materials based on the sensed spectral band intensities. The sensed spectral band intensities are compared to reference spectral band intensities of a set of considered materials. The solution is converted from a pulse domain into an analog domain as second analog domain signals.

The invention discloses a heat source machine formed by connecting gas water heaters in parallel and a control method. The heat source machine comprises a main water inlet pipe, a hot water convergence pipe, a main gas inlet pipe, gas water heaters and a system controller. The gas water heaters are connected in parallel through the main water inlet pipe, the hot water convergence pipe and the main gas inlet pipe. Each gas water heater is internally provided with a water flow collecting sensor, a water inlet temperature detector and a water outlet temperature detector and is connected with the system controller through a communication bus and a signal converter arranged on the communication bus. A water inlet electromagnetic valve is arranged on a cold water pipe of each gas water heater and connected with the system controller through a water inlet switch control line. During working, data of each gas water heater are transmitted to the system controller, the number of the gas water heaters needing to work is worked out, the system structure is simple, installation is convenient, the water temperature is constant, no constant temperature water tank is needed, and safety is high.

The invention discloses a radio frequency system. According to the invention, a radio frequency remote operation can be carried out without adding external combined equipment. The radio frequency system comprises a filtering unit, a main control unit, and at least two radio frequency units. Each radio frequency unit is respectively connected with the main control unit and the filtering unit. The filtering unit is used for combining and filtering received signals of all radio frequency units and emitting filtered signals together by an antenna; besides, the filtering unit is also used for shunting and filtering received signals by the antenna and sending each received signal to a corresponding radio frequency unit. Each radio frequency unit is used for carrying out an amplifying and filtering process and a down conversion process on received signals from the filtering unit and sending the processed signals to the main control unit; besides, the each radio frequency unit is also used for carrying out modulation, up conversion, and amplification on signals from the main control unit and sending the processed signals to the filtering unit. The main control unit is used for allowing the signal transformation between a BBU and a radio frequency unit.

The invention relates to a hardware in-loop simulation test system for a traffic signal control system, and relates to the technical field of traffic signal control and traffic simulation, for overcoming the defects that a practical signal control system cannot support prior evaluation and traffic simulation software can not simulate a timing scheme of the signal control system in real time. The test system consists of the traffic signal control system, signal conversion equipment and a traffic simulation module, wherein one-to-one or one-to-many data transmission between the signal conversion equipment and a signal machine and between the traffic simulation module and the signal conversion equipment can be realized by wire / wireless connection. The signal conversion equipment can be interface equipment which independently runs, or an input / output card on a main board of a computer, or a universal interface assembled on the signal machine and the computer. The data transmission takes the signal conversion equipment as a bridge, vehicle detecting information is transmitted to the signal machine by the traffic simulation module, and signal timing information is transmitted to the traffic simulation module by a traffic signal controller.