19903 results about "Light signal" patented technology

The virtual intelligence shoe with a podiatric analysis system provided with a portable pair of shoe-like body types thereof, into two of which a miniature electronic module and an enclosed sensor mat are permanently embedded in the shoe-like with a mechanical air package enclosing the electronic module to serve as a shock absorption. A miniature electronic module comprises a transmitting circuit with pressure resistance, shoe temperature and warning buzzer for full memory capacity, which receives the variable pressure and temperature voltage signals, convert them into resistance (ohm) and Celsius, respectively. The electrical signals can be emitted in an infrared light signal. An enclosed sensor mat constitutes a thin, flexible, planar, resilient, and dielectric material that arrays seventy-four positions at strategic geometrical pattern to produce the precision of collecting data exerted by a foot or feet continuously and instantaneously in static and dynamic event during the full weight bearing in various activities. The conjunction of a pair of shoe-like body types, a digital foot scanner, a portable infrared light-receiving unit and a central integrator (servers) form a podiatric analysis system for enabling accurate information. An obtained information of each individual can be stored and analyzed for diagnostic means with respect to the foot or feet maladies. The virtual intelligence shoe with a podiatric analysis system is an unconventional, which can ultimately be used by anyone and capable to produce consistent foot or feet information to implement the changes in the foot or feet biomechanics by altering the shoes, orthoses or other modes. In a preferred form, a pair of shoe-like body types is virtually applied to any type of foot or feet maladies and worn daily as if they were conventional shoes under various terrain conditions.

An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto, the light emitting diodes receiving power from a power source. The processor is in communication with the light emitting diodes and the at least one photodetector, the processor capable of illuminating the light emitting diodes to simultaneously create at least one first light signal, and at least one second light signal, the first light signal being observable to the unaided eyes of an individual and the second light signal not being observable to the unaided eyes of the individual. The second light signal includes at least one data packet. The at least one data packet comprises global positioning system (GPS) location information.

A multi-function, field-deployable resource harnessing apparatus 600 having, in its embodiments, an inflatable reflector apparatus 610 comprising a least one manufactured parabolic mirror made from a pressure-deformable reflective covering of an inflatable ring for focusing electromagnetic energy from radio frequency radiation (RF) through the ultraviolet (UV) radiation including solar energy for (1) heating and cooking, (2) electrical power generation, (3) enhancing the transmission and reception of radio signals, (4) enhancing vision in low-light environments, and/or (5) projection of optical signals or images. The device also has non-electromagnetic uses, such as the collection and storage of water, harnessing of energy from a fluid stream, and/or harnessing wave energy. A first main embodiment of the inflatable reflector apparatus 610 generally utilizes two pressure-deformable membranes, at least one of which is reflective. A second main embodiment utilizes a reflective membrane and a transparent membrane. In addition to the reflector apparatus 610, the modular apparatus 600 typically further includes modular assemblies to increase versatility, facilitate use, and/or enhance safety such as, for example, a modular support and orienting assembly 612, a separate support ring 614, a safety shield or cage 616, a focal point support assembly 618, a safety cover 620, a safety net or mesh 622, and a stabilizing assembly 624. Portability is enhanced by complete collapsing of the inflatable device.

A system and method for providing an in-building navigation service using VLC are provided, in which transmitters control lamp modules to generate visible light signals each in a combination of different wavelengths as information for a navigation function, a mobile terminal receives visible light signals from a plurality of lamp modules that illuminate an area where the mobile terminal is located, location information about a current location of the mobile terminal is acquired through the visible light signals received from the plurality of lamp modules, and navigation information including information that matches the location information to map information is displayed on the mobile terminal.

An apparatus for generating buoy light signals using a collimated light source. The system provides for communication of system conditions and ambient conditions, and can provide homeland security monitoring. The system senses motion of the buoy and compensates the direction of lighting, and optionally acoustics, being generated out over a body of water. Numerous other transportation related embodiments are described including devices for providing user comfort when flying, automotive signaling, auto parking control, sports bottles, visors, and lures.

A noninvasive light sensor for detecting heart beat signals has a circular support member engageable circumferentially with a body part of a person. Light emitters and light detectors are located around a circumference of the circular support member for respectively emitting light signals into different areas of tissue surrounding the body part, and detecting reflected light signals from the different areas of tissue surrounding the body part.

A medical instrument system includes an elongate flexible instrument body with an optical fiber substantially encapsulated in a wall of the instrument body, the optical fiber including one or more fiber gratings. A detector is operatively coupled to the optical fiber and configured to detect respective light signals reflected by the one or more fiber gratings. A controller is operatively coupled to the detector, and configured to determine a twist of at least a portion of the instrument body based on detected reflected light signals. The instrument may be a guide catheter and may be robotically or manually controlled.

Systems and methods for providing broadband communication are provided. An optical fiber node may be coupled to a source component. The optical fiber node may receive, from the source component, a downstream light signal via at least one input optical fiber, and transmit the downstream light signal to a plurality of output optical fibers. A tap device may be coupled to the optical fiber node via at least on optical fiber. The tap device may receive the downstream light signal via the at least one output optical fiber, convert the downstream light signal into a radio frequency downstream signal, and transmit the radio frequency downstream signal to a plurality of cable lines. The plurality of cable lines may be coupled to one or more customer premises.

An optical measurement device and method are presented for use in non-invasive measurements on a patient's body. The device comprises an illumination assembly configured and operable to generate illuminating light of a predetermined wavelength range; a detection assembly; and a light directing assembly. The detection assembly comprises a first detector unit for detecting a first light signal transmitted through an illuminated body portion and generating first measured data indicative of the detected transmitted light, and a second detector unit for detecting a second light signal reflected from the illuminated body portion and generating second measured data indicative of the detected reflected light. The light directing assembly comprises a light diffuser for scattering back light incident thereto, to thereby direct the illuminating light or the light coming from the body portion back towards the body portion. This technique provides for increasing the amount of light reaching a region of interest inside the body portion and maximizing homogeneity of the first and second detected light signals.

A medical instrument system comprises an elongate instrument body; an optical fiber coupled in a constrained manner to the elongate instrument body, the optical fiber including one or more Bragg gratings; a detector operably coupled to a proximal end of the optical fiber and configured to detect respective light signals reflected by the one or more Bragg gratings; and a controller operatively coupled to the detector, wherein the controller is configured to determine a geometric configuration of at least a portion of the elongate instrument body based on a spectral analysis of the detected reflected portions of the light signals.

An easily removable modular optical signal transceiver unit for conversion between modulated light signal transmission and electronic data signals and which conforms to the Small Form Factor standard for transceiver interfaces is disclosed. The structural details of its chassis include aspects which insure the proper positioning of electronic circuit boards of a transmitter optical subassembly and a receiver optical subassembly as well as the positioning of electromagnetic radiation shielding on the chassis. In conjunction with an interface device on an electronic circuit board of a host device, the chassis supports electromagnetic radiation shielding which substantially encloses the sources of electromagnetic radiation within the module and suppresses the escape of electromagnetic radiation, thereby preventing electromagnetic interference with sensitive components and devices in proximity to the module.

A method and apparatus for non-invasively determining the blood oxygen saturation level within a subject's tissue is provided that utilizes a near infrared spectrophotometric (NIRS) sensor capable of transmitting a light signal into the tissue of a subject and sensing the light signal once it has passed through the transmitting a light signal into the subject's tissue, wherein the transmitted light signal includes a first wavelength, a second wavelength, and a third wavelength; (2) sensing a first intensity and a second intensity of the light signal, along the first, second, and third wavelengths after the light signal travels through the subject at a first and second predetermined distance; (3) determining an attenuation of the light signal for each of the first, second, and third wavelengths using the sensed first intensity and sensed second intensity of the first, second, and third wavelengths; (4) determining a difference in attenuation of the light signal between the first wavelength and the second wavelength, and between the first wavelength and the third wavelength; and (5) determining the blood oxygen saturation level within the subject's tissue using the difference in attenuation between the first wavelength and the second wavelength, and the difference in attenuation between the first wavelength and the third wavelength.

A navigation system and a navigation method inside of a building using Visible Light Communications (VLC) are provided. The navigation system includes a map server, in which map information required to provide a navigation function is stored, for transferring the map information to each lamp, a plurality of lamps, installed in each zone inside of the building and having their respective identifiable and unique IDentifications (IDs), for receiving the map information required to provide the navigation function from the map server, and for generating a visible light signal in response to the received map information by using a VLC module, and a mobile terminal, equipped with a visible light Rx module, for being provided with the map information upon receiving the visible light signal generated from the lamp, and for displaying a map image in response to the provided map information.

A photodetector capable of normal incidence detection over a broad range of long wavelength light signals to efficiently convert infrared light into electrical signals. It is capable of converting long wavelength light signals into electrical signals with direct normal incidence sensitivity without the assistance of light coupling devices or schemes. In the apparatus, stored charged carriers are ejected by photons from quantum dots, then flow over the other barrier and quantum dot layers with the help of an electric field produced with a voltage applied to the device, producing a detectable photovoltage and photocurrent. The photodetector has multiple layers of materials including at least one quantum dot layer between an emitter layer and a collector layer, with a barrier layer between the quantum dot layer and the emitter layer, and another barrier layer between the quantum dot layer and the collector.