Enabling object tracking through scenes with large light intensity changes
Visual surveillance of dynamic scenes is critically important for a broad range of applications. Architecture for real-time extraction of of maximally stable extended extremal regions (X-MSERs) has been developed. The system is comprised of a communication interface and processing circuitry configured in hardware to receive data streams of an intensity image and a depth image in real-time. The system determines X-MSER ellipses parameters based upon the strong extremal regions and X-MSER criteria.
Improves efficiency of communication systems
Low complexity is an essential requirement for most modern communication systems. The developed digital communication receiver is comprised of a demodulator device, a receiver and a demodulation method for M-ary amplitude shift keying systems (MASK) that requires partial knowledge of the channel state information. The approach doesn’t require the knowledge of the channel phase shift leading to a robust system without complicated channel estimation techniques.
Enhancing the network capacity of communication systems
As mobile technology and communication systems have become ubiquitous throughout the world, there is a need for enhanced network capacity. The developed computer-implemented method of estimating transmitted signals in a communication system functions to transmit signals from a transmitter to a receiver over a communication channel having a channel response. The method estimates the transmitted signals based on generated trial sequences minimizing the channel response between adjacent received signals.
Enhancing data security in cloud computing
Critical security and data privacy issues can exist if the dynamic random-access memory (DRAM) content is not sanitized or wiped out before being allocated to a newly provisioned virtual machine in cloud computing. Various methods have been developed to erase volatile memory that is comprised of erasure circuitry that prevents refreshment of the memory upon occurrence of a predefined event by the randomization of data stored, by manipulating reference voltage, and by controlling refreshment of stored data.
Protecting consumers from tampering
Evidence that a food product or consumer product has not been tampered with prior to purchase is of high importance to consumers. The developed tamper-proof device can be attached to a object to aid consumers in detecting if the object has been tampered with. The tamper-proof device is comprised of a body that can be attached to an object, a transducer to detect a change in the body, and an indicator or controller.
Improving object detection and tracking from video streams
Visual surveillance of dynamic scenes is critically important for applications that range from computer vision to robotics to national security. Architecture for linear-time extraction of maximally stable extremal regions (MSERs) has been developed. The system is comprised of image memory, heap memory, a pointer array and processing hardware. The system can determine MSER ellipses based on the range of components and MSER criteria.
Harvesting thermal energy to provide perpetual energy to electronics
Energy harvesting from ambient sources is an attractive means of powering electronic devices. A thermoelectric energy harvesting system has been developed that charges an energy store from ambient thermal energy. The system is comprised of a thermoelectric energy generator (TEG), an automatic polarity monitor, and switching matrix. The TEG functions to generate a voltage when thermally connected between two temperature reservoirs at different temperatures.
Improving the vision of computers and robots
Extracting affine-invariant regions and features from image data is used in numerous computer vision and robotic applications. The developed output detection and tracking method involves the receipt of depth image data corresponding to a depth image view point relative to objects detected. With the method, a series of binary threshold depth images are formed from the depth image data to detect and/or track the object.
Achieving real-time video analysis
Object detection, recognition, and tracking from a video stream is critically important for applications that range from computer vision to robotics to national security. Hardware architecture for real-time extraction of maximally stable extremal regions (MSERs) has been developed to improve image extraction. The system is comprised of a communication interface and processing circuitry configured in hardware to receive data streams and extract MSERs in real-time.
Effective and reliable hands-free control of a computer mouse
Use of a computer is challenging for some individuals with physical disabilities due to the inability to manipulate the computer mouse. The developed computer eye controlled computer mouse interface could enable manipulation of the mouse without requiring sophisticated hardware. The interface is comprised of a camera, a display, memory, and a processor with data acquisition, calibration function, eye detection, face detection, and gaze mapping functionality.
Automatic and accurate detection of potential drowning events
Drowning can happen quickly and quietly anywhere there is water and even in the presence of lifeguards. In the United States about ten people die each day from drowning. The developed drowning detection system is comprised of sonar sensors arranged in a body of water to form a three-dimensional grid, a movement tracing unit connected to the sonar sensors, and a drowning detection unit that analyzes the movement path of a person and issues an alarm when the movement path of the person is indicative of drowning.
Harvesting energy from multiple energy sources
There is a market need for energy harvesting technologies due to the increasing adoption of mobile and portable devices. The developed energy mixer enables energy harvest from multiple energy sources. The energy mixer is comprised of two active diodes coupled between separate input nodes and output nodes, two capacitors coupled between each input node and additional nodes, switching circuitry, and control circuitry.
Enhancing real-time video analysis
Object detection, recognition, and tracking from a video stream is critically important for applications that range from computer vision to robotics to national security. Architecture for real-time parallel detection and extraction of maximally stable extremal regions (MSERs) has been developed. The system is comprised of a communication interface and processing circuitry configured in hardware to receive data streams and extract MSERs in real-time.
Protection against sudden death from ventricular arrhythmias
The medical device for detecting a ventricular arrhythmia is comprised of input circuitry configured to receive an electrocardiogram signal, processing circuitry coupled to the input circuitry, and feature extraction circuitry coupled to the processing circuitry. In addition, machine learning circuitry is coupled to the feature extraction circuitry that includes a decision block to alarm the user if a ventricular arrhythmia is detected.
Self-power system to eliminate accessory charger forever
An energy harvesting system had been developed to convert mechanical vibrations into electrical energy for the purpose of powering electronic devices. The design includes two energy harvesting units that convert mechanical vibrations into AC signals, AC-DC converters configured to convert the generated AC voltage to a DC voltage, and a DC-DC converter configured to receive and store energy from the regulated DC signal.
Enabling more memory with less power consumption
An efficient hybrid non-volatile memory cell and a hybrid memory array architecture have been developed to improve existing memory technology. The system is comprised of a complementary metal-oxide semiconductor access transistor connected to a memristor which stores a data based on a resistance. The control logic of the system is designed for handling all peripheral circuits and input and output of data.
Enabling miniaturization of electronic devices
There is an increasing market need for down-scaling basic electronic devices to the nano-range for meeting practical demands, such as saving power consumption, obtaining optimum high speed, and meeting consumer preferences. The developed nano-tunneling field effect transistor based on nano-metal particles could potentially address power concerns in nano-electronics and accelerate down-scaling. The transistor includes a source and a drain in which each is comprised of a nano-cluster of metal atoms.
Ensuring secure communication using chaotic signals
The developed communication security system uses a chaotic cryptographic technique for orthogonal frequency division multiplexing (OFDM) implemented with an OFDM symbol structure based on symmetric key cryptography. The system security is proportional to (L×N)! where N is the number of subcarriers in the OFDM system and L is the number of OFDM symbols involved in the encryption process. The system encrypts/decrypts data at a physical layer of an OFDM data transmission system.
Your secrets deserve to be protected
It is a light-weight highly secured data encryption software, capable of securing all multimedia file formats as well as real-time communication encryption by using private key cryptography. The information owner has full control over the encryption without the intervention of a third party. The system can be used on various operating systems (iOS, Android, Windows, etc) and platforms (PCs, smartphones, etc).
Nanotips with desirable apex atomic structures
The developed method of fabricating a super nano ion-electron source can lead to improved nanotips for applications in nanotechnology, particularly in scanning probe microscopy and electron microscopy. The method involves placing an assembly of precursor tip with an apex and a shank and a heating metal ring in a field ion microscope chamber, applying a direct current to heat the metal ring, applying an electrical field to the precursor tip, and monitoring the evolution of the tip apex until sharpened to a desirable structure.
Converting vibrations into power for electronic devices
An energy harvesting apparatus and method have been developed to convert environmental vibrations into electrical energy for the purpose of powering electronic devices. The design includes a piezoelectric component that can generate an AC voltage, an AC-DC converter configured to convert the generated AC voltage to a DC voltage, an output for sending the generated current to an electronic device, and a feedback loop.
Reducing the impact of seizures in epilepsy patients
The occurrence of random and sudden seizures in epilepsy patients can be stressful and potentially dangerous. The machine-based patient-specific seizure classification system could detect seizure precursors and potentially suppress the seizures. The system-on-chip (SoC) includes a hardware-efficient log-linear engine to realize non-linear support vector machine-based seizure detection. Also, the system enables multi-channel electroencephalography data acquisition and storage.
Broadening market applications for ultrasound transducers
Piezoelectric micromachined ultrasound transducers (PMUTs) have emerged as a substitute to conventional ultrasonic sensors. A typical PMUT is a suspended membrane clamped at its edges and driven through piezoelectric effect by the application of an AC voltage. The tunable ultrasound transducers developed provided a range of operating frequencies that cannot be optimally addressed by a single transducer.
Eliminates manual and inaccurate data extraction
Charts and graphs are frequently utilized by scientists and engineers to present and interpret data. The systems and methods developed enable data extraction from charts and graphs to provide a usable format for further data analysis/interpretation.