Class / Patent application number | Description | Number of patent applications / Date published |
342127000 | Phase comparison | 11 |
20090195438 | RANGE MEASURING METHOD, RANGE MEASURING APPARATUS, NON-CONTACTED IC MEDIUM AND RANGE MEASURING SYSTEM - A method of measuring a range from a reader unit to a non-contacted IC medium, includes: transmitting an inquiry signal at a first frequency from the reader unit to the non-contacted IC medium; causing the non-contacted IC medium to perform modulation to modulate the first frequency by using a second frequency to obtain a modulated frequency, and causing the non-contacted IC medium to respond to a response signal at the modulated frequency; causing the reader unit to receive the response signal to acquire a plurality of frequency components; calculating a phase difference between signals of at least two of the acquired plurality of frequency components; and measuring the range by using the phase difference. | 08-06-2009 |
20100007548 | Method and device for determining a distance to a target object - The invention relates to a method for determining a distance (r) to a target object ( | 01-14-2010 |
20100245156 | DISTANCE MEASURING APPARATUS AND DISTANCE MEASURING METHOD - Distance measuring apparatus has a rough distance measuring circuit ( | 09-30-2010 |
20110285578 | RF BASED TRACKER FOR ROTATING OBJECTS - An RF beam is used to probe the presence or absence of a rotating blade in a known field of view. Timing of appearance or disappearance or “zero-crossing” of a reflected signal is correlated with timing of the blade movement. Blades which are leading or lagging versus other blades will produce different timing signatures representative of alignment of the blades | 11-24-2011 |
20120223854 | COMMUNICATION PROCESSING APPARATUS AND DISTANCE MEASURING METHOD FOR COMMUNICATION PROCESSING APPARATUS - A communication processing apparatus alternately transmits a carrier wave carrying a command and receives a response from a tag while transmitting an unmodulated carrier wave. A transmission control unit changes the phase of the unmodulated carrier wave transmitted from a transmission/reception circuit in response to start of reception of the reflected wave from the tag. The transmission/reception circuit includes a circuit for separating and detecting an I signal and a Q signal included in the reflected wave from the tag. A phase detection unit uses the I signal and the Q signal to detect change of the phase of the reflected wave. A distance calculation unit measures a time from a change of the phase of the unmodulated carrier wave to a detection of a corresponding change in the phase of the reflected wave, and uses the time to calculate the distance from the antenna to the tag. | 09-06-2012 |
20130135138 | METHOD FOR PHASE UNWRAPPING USING CONFIDENCE-BASED REWORK - A method, executed by one or more computers, for unwrapping phase wrapped data including a plurality of nodes. The method includes: selecting a root node from the plurality of nodes to start unwrapping ( | 05-30-2013 |
20130181862 | DISTANCE MEASURING APPARATUS AND DISTANCE MEASURING METHOD - Disclosed is a distance measuring apparatus which includes: a first pulse generating means ( | 07-18-2013 |
20160011300 | RADAR OPERATION WITH ENHANCED DOPPLER CAPABILITY | 01-14-2016 |
20160054438 | VIBRATION PARAMETERS MONITORING USING FMCW RADAR - A frequency modulated continuous wave (FMCW) radar system that includes a transceiver coupled to an analog to digital converter (ADC), and a digital signal processor (DSP) coupled to the ADC. The transceiver is configured to transmit a plurality of FMCW chirps, receive a plurality of reflected FMCW chirps, and mix the plurality of reflected FMCW chirps with at least one of the FMCW chirps to generate a plurality of beat signals. The reflected FMCW chirps are the FMCW chirps after being reflected off of a target object. The ADC is configured to convert the beat signals into a plurality of digital chirps. The DSP is configured to receive the digital chirps and quantify a plurality of vibration parameters for the target object based on a comparison of phase information in a frequency domain between one of the plurality of FMCW chirps and one of the plurality of digital chirps. | 02-25-2016 |
20160061943 | RECEPTION SIGNAL PROCESSING DEVICE, RADAR, AND OBJECT DETECTION METHOD - A signal processing device according to an embodiment includes a plurality of signal processing units and a pseudo signal generating unit. The plurality of signal processing units are provided in a plurality of reception antennas which receive reflection signals of a transmission signal reflected on an object, and perform signal processing in parallel on beat signals which are generated based on the transmission signal and the reflections signals. The pseudo signal generating unit generates a pseudo signal imitating the beat signal, and inputs the pseudo signal as a target of the signal processing into the plurality of signal processing units in parallel. | 03-03-2016 |
20160124083 | PROXIMITY SENSOR AND METHOD FOR MEASURING THE DISTANCE FROM AN OBJECT - A proximity sensor for measuring the distance from an object contains a microwave oscillator which provides, as an output signal, a transmission wave which is emitted by the proximity sensor in the direction of the object as a free space transmission wave which is reflected by the object, which is electrically conductive or has at least one electrically conductive surface, as a free space reflection wave and is received by the proximity sensor as a reflection wave. The reflection coefficient is determined from the transmission wave and the reflection wave and is provided by the proximity sensor as a measure of the distance. The transmission wave is guided in a waveguide as a waveguide transmission wave, the transmission wave is injected into the waveguide with a wave mode which results in the waveguide transmission wave being separated at the aperture at the front end of the waveguide into the free space transmission wave and in the free space transmission wave propagating to the object. | 05-05-2016 |