Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 8138969 | Monobit based low cost high performance radar warning receiver A radar warning receiver is implemented in low cost integrated circuit form utilizing only one analog component, namely a limiting amplifier. By taking the output of the limiting amplifier and utilizing monobit sampling of the output it has been found that one can p... | 03/20/2012 |
| 7994968 | RF magnitude sampler for holographic radar A gated peak detector produces phase-independent, magnitude-only samples of an RF signal. Gate duration can span as few as two RF cycles or thousands of RF cycles. Response is linearly proportional to RF amplitude while being independent of RF phase and frequency. A... | 08/09/2011 |
| 7898469 | Receiving device for spread spectrum radar apparatus Provided is a receiving device that is used for a spread spectrum radar apparatus, receives a spectrum-spread signal, and obtains a precise radar spectrum, and includes: a despreading unit that (i) generates first and second despread signals that are generated by de... | 03/01/2011 |
| 7800529 | Method and apparatus for creating and processing universal radar waveforms A new approach to radar imaging is described herein, in which radar pulses are transmitted with an uneven sampling scheme and subsequently processed with novel algorithms to produce images of equivalent resolution and quality as standard images produced using standa... | 09/21/2010 |
| 7656347 | Quadrature radar apparatus A quadrature radar apparatus includes a quadrature signal generating unit, a plurality of coupler modules connected to the signal generating unit, an antenna unit receiving transmission signals from the coupler modules and a reception signal reflected from a target,... | 02/02/2010 |
| 7646334 | Radar signal processing system and method for analyzing downhole oil and gas well environments A radar signal processing system utilizing a specialized neural network generative topographic mapping method which employs an alternative method for characterizing multiple radar signatures wherein specialized phased-codes and wavelet waveform modulations are used.... | 01/12/2010 |
| 7629922 | Method and system for obtaining in-phase and quadrature components of a signal A method of obtaining in-phase and quadrature phase components for a narrowband signal is provided. The method includes digitally sampling a narrowband signal at a digital sampling rate to obtain a number of data points. The method subtracts a first portion of the d... | 12/08/2009 |
| 7548193 | Radar device For enabling determination on whether a sign of a Doppler frequency or a target angle is positive or negative even when only a real signal can be obtained as a received signal, the present invention provides a radar device including: an oscillator; a transmitting el... | 06/16/2009 |
| 7439899 | Encoded transmitted signals in a simultaneous dual polarization weather system A system for simultaneously propagating dual polarized signals in a polarimetric radar system includes a system for coding at least one of the two signals. The simultaneous dual polarization weather radar transmits signals in both the horizontal and vertical orienta... | 10/21/2008 |
| 7417584 | Monopulse radar estimation of target altitude at low angles of elevation A monopulse radar operating at low angles of elevation (LOE) receives returns from a target by a direct path and by a path including a reflection from that portion of the Earth's surface lying between the radar and the target. The surface-reflected signal tends to c... | 08/26/2008 |
| 7414567 | ADS-B radar system A system and method of using a standard ADS-B transmitter and encoder to identify targets to provide a collision avoidance system, wherein the method includes the steps of providing a standard ADS-B transmitter and encoder, a phase modulator including a digital synt... | 08/19/2008 |
| 7391362 | Linear FM radar A FM-CW radar system comprises a frequency modulated continuous wave digital generator that produces both in-phase (I) and quadrature-phase (Q) outputs to orthogonally oriented transmitter antennas. A linearly polarized beam is output from a switched antenna array t... | 06/24/2008 |
| 7379017 | Micro movement pulsed radar system and method of phase noise compensation A pulsed radar system uses phase noise compensation to reduce phase noise due to drift of the reference oscillator to enable detection of micro movements and particularly human motion such as walking, breathing or heartbeat. The noise level due to A/D sampling must ... | 05/27/2008 |
| 7372897 | Portable information communication terminal, program, and recording medium The number of times for averaging operation for averaging a correlation value of a received signal and a reference signal is properly controlled. When the correlation value is not averaged, since a lower limit value TH_A of a correlation level of a distribution of t... | 05/13/2008 |
| 7363812 | Radar level gauge with variable transmission power A pulsed radar level gauge, comprising a transmitter for generating and transmitting a signal in the form of a pulse train, means for receiving pulses reflected in said tank, and to form an analogue tank signal based on these reflections, an analogue to digital conv... | 04/29/2008 |
| 7362815 | Time-reversal block transmit diversity system for channels with intersymbol interference and method A method for diversity transmission and reception for channels with intersymbol interference is created. With this method one can transmit from two or more antennas in such a way that a receiver with one or more antennas can benefit from the diversity offered by the... | 04/22/2008 |
| 7352800 | Method of partial parallel interference cancellation A method of Partial Parallel Interference Cancellation (PPIC) is provided for recursively eliminating the Multiple Access Interference from a received signal. Such method is to use a recursion way to eliminate all the Multiple Access Interference (MAI) one by one fr... | 04/01/2008 |
| 7336744 | Digital baseband receiver including a cross-talk compensation module for suppressing interference between real and imaginary signal component paths A digital baseband (DBB) radio frequency (RF) receiver used for receiving and processing a wireless communication signal. The DBB RF receiver includes a demodulator, an analog to digital converter (ADC) and a digital cross-talk compensation module. The demodulator o... | 02/26/2008 |
| 7298317 | Gain compensation in an ultra-wideband transceiver A circuit for providing gain compensation to a swept frequency response in an ultra-wideband system includes using a variable amplitude IF signal into a gigahertz mixer to control the amplitude of a ultra-wideband transmitter. The variable amplitude IF signal is gen... | 11/20/2007 |
| 7298315 | Radar pulse compression repair A radar pulse compression repair (RPCR) system includes a receiver for receiving a radar return signal, a matched filter for applying matched filtering to the radar return signal to generate a matched filter output, a processor programmed for applying Radar Pulse Co... | 11/20/2007 |
| 7295154 | Vehicle obstacle warning radar A method for detecting an object using a transmitting antenna and an array of receiving antennas. The method comprises the step of transmitting a signal from the transmitting antenna. The magnitude and phase of a respective received signal at each of the receiving a... | 11/13/2007 |
| 7295145 | Selective-sampling receiver A receiver that selectively samples a received signal in order to suppress an interference component of the signal while recovering a desired component. The selective sampling may be accomplished by low cost, low complex analog or digital circuitry. The receiver inc... | 11/13/2007 |
| 7292630 | Limit-cycle-free FIR/IIR halfband digital filter with shared registers for high-speed sigma-delta A/D and D/A converters A multiplexed FIR/IIR digital filter structure (300) which offers linear phase response and low group delay by switching on a FIR filter portion (31) or a IIR filter portion (32). To reduce the silicon area, the FIR/IIR filter (300) share... | 11/06/2007 |
| 7283582 | Correlator The present invention relates to a device for generating at least one code phase (Ce, Cp, Ci) the device comprising a shift register (702) comprising N outputs and to which a code sequence (Cin) to be phased is applied, and at least one logic branch (722, ... | 10/16/2007 |
| 7280067 | Radar detector and radar detecting method for WLAN systems according to 802.11 wireless communication standards The present invention relates to a radar detector and a radar detecting method for WLAN systems according to 802.11 wireless communication standards, and particularly concerns the radar detection for 802.11 h dynamic frequency selection mechanism. The essence of the... | 10/09/2007 |
| 7268724 | Reduced-error monopulse processor This monopulse processor provides target position information having an RMS error which is less than that of a conventional monopulse processor. A Σ±jΔ vs. Σ processor is modified to provide a position output signal equal to the smaller in absolute magnitude of ... | 09/11/2007 |
| 7259716 | Quadrature mixture LO suppression via DSW DAC noise dither A Quadrature Error Corrected Digital Waveform Synthesizer (QECDWS) employs frequency dependent phase error corrections to, in effect, pre-distort the phase characteristic of the chirp to compensate for the frequency dependent phase nonlinearity of the RF and microwa... | 08/21/2007 |
| 7250902 | Method of generating accurate estimates of azimuth and elevation angles of a target for a phased—phased array rotating radar A method and apparatus for generating accurate estimates of a radar target's azimuth and elevation angles for a phased-phased array rotating radar. Scan modulated coherently integrated (SMCI) monopulse curves are generated from a measured one-way transmit antenna pa... | 07/31/2007 |
| 7248205 | Radar apparatus A transmitter emits into an intended search space a radar wave having a predetermined frequency pulse-modulated by a trigger pulse of a predetermined width. A receiver receives a reflected wave of the radar wave and outputs a receive signal. A local pulse generator ... | 07/24/2007 |
| 7245359 | Vehicular radar system A radar system of a vehicle has a zero-cross comparator, an integrator, and a sensor. The comparator compares a light reception signal output from each one of photoreceptive elements with a predetermined standard signal and outputs a comparison signal indicating two... | 07/17/2007 |
| 7242461 | Vehicular radar system An integrator of a vehicular radar system has multiple switches and multiple capacitors, which are connected with the switches, for each one of photoreceptive elements. The integrator integrates light reception signals, which are output from the photoreceptive eleme... | 07/10/2007 |
| 7236123 | System for enhanced detection of a target Disclosed herein is a computer-readable medium having stored thereon computer-executable instructions for providing phase-range data associated with a return pulse of a radar device and second phase-range data associated with a successive return pulse of the radar d... | 06/26/2007 |
| 7206707 | Wideband digital IFM receiver An IFM receiver includes a hybrid for outputting I and Q signals from a received input signal; a first ADC for digitizing the I signal to produce a first digital signal at a sampling rate of 1/τ, and a second ADC for digitizing the Q signal to produce a second digi... | 04/17/2007 |
| 7205931 | Method for determining the distance between a base station and a mobile object, in addition to a base station and identification system for a method of this type A method for determining the distance between a base station (SLG) and a mobile object (DT1–DT3). A HF carrier frequency and an offset frequency (df) are predetermined for a QAM modulation. The HF carrier frequency is increased and decreased by the o... | 04/17/2007 |
| 7199747 | Generating a fine time offset using a SiGe pulse generator A method and apparatus for generating short electronic pulses using a modified differential trigger that is partly an analogue sinusoidal voltage and partly a selectable, DC voltage. The differential trigger is applied to a differential base band pulse generator hav... | 04/03/2007 |
| 7199751 | Radar equipment A radar equipment of the present invention amplifies a reception signal with feedback based on the delay amount obtained from the correlation detection result. Accordingly, it becomes possible to maintain the reception signal (demodulated signal) level to a proper l... | 04/03/2007 |
| 7196657 | Radar system using RF noise A radar system that utilizes predetermined, pseudorandom, or random waveforms that may be substantially matched to the impulse response of the radar and any surrounding clutter such that the signal-to-clutter ratio may be optimized and/or such that specific targets ... | 03/27/2007 |
| 7190720 | Tap weight initializer for an adaptive equalizer Initial values of the tap weights for the taps of a linear equalizer are determined based on a channel impulse response of a channel so that the values corresponding to the weights of the equalizer taps achieve optimum initialization of the equalizer. These values a... | 03/13/2007 |
| 7190302 | Sub-surface radar imaging Detailed is radar imaging apparatus including a single transmit antenna and at least one receive antenna, scanning apparatus (e.g. a pantograph) for mechanically scanning the antennas over a surface of interest, position providing apparatus (e.g. a computer driving ... | 03/13/2007 |
| 7183964 | Mine detection using radar vibrometer A frequency-stepped radar may be used to detect buried landmines by sequentially inducing vibrations of different frequencies in the landmine. A sensor detects signals associated with the vibrations, and a processor processes the signals to detect the landmine. ... | 02/27/2007 |
