Celebrity Inventors
Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8184746 | Simplified de-rotation in digital FM demodulator architectures The present invention relates to a digital receiver for FM signals, in particular to a new demodulator structure and demodulating method, by which according to a first aspect of the invention the usual complex de-rotation process is reduced to a simple addition/subt... | 05/22/2012 |
| 8175194 | Signal receiving apparatus and signal processing method According to one embodiment, a signal receiving apparatus includes a first setting module, a calculator, a detection module, a generator, and a determination module. The first setting module is configured to set a rising or falling of an arbitrary high pulse as a st... | 05/08/2012 |
| 8144814 | Signal quality estimator Techniques for estimating signal quality in a communication system are described. Scaled errors are obtained for inphase (I) and quadrature (Q) components of detected symbols. The scaled errors are determined based on a first function having higher resolution for sm... | 03/27/2012 |
| 8139684 | Apparatus and method for processing multi-channel signals and multi-channel receiver using the same Disclosed is a multi-channel signal receiver technology. An RF front-end in an RF receiver receiving at least two RF signals with different transmission bandwidths includes: at least two RF tuners receiving, amplifying, and frequency-converting the at least two RF s... | 03/20/2012 |
| 8102947 | Bit labeling for amplitude phase shift constellation used with low density parity check (LDPC) codes An approach is provided for bit labeling of a signal constellation. A transmitter generates encoded signals using, according to one embodiment, a structured parity check matrix of a Low Density Parity Check (LDPC) code. The transmitter includes an encoder for transf... | 01/24/2012 |
| 8040977 | Reception synchronization control device, reception synchronization control method, and program therefor This invention provides a reception synchronization control device that controls reception synchronization of demodulated signals to be established, the demodulated signals being obtained by demodulating a phase modulated signal transmitted by a phase modulation, wh... | 10/18/2011 |
| 8014469 | Pipeline architecture for multi-slot wireless link processing A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband ... | 09/06/2011 |
| 7894551 | Modulation scheme detecting apparatus and related method A modulation scheme detecting apparatus includes a first power estimating module, a second power estimating module and a decision module. The first power estimating module is utilized for evaluating a first nominal power of the received signal rotated by a first pre... | 02/22/2011 |
| 7796707 | Device for converting a complex-valued bandpass signal into a digital baseband signal A device is disclosed for converting a complex-valued bandpass signal into a digital baseband signal having: a) an analog filter unit to filter the complex-valued bandpass signal to produce only the real component from the filtered signal, and to provide a real-valu... | 09/14/2010 |
| 7742545 | Method and apparatus for generating corrected quadrature phase signal pairs in a communication device A method and an apparatus (300) for generating corrected quadrature phase signal pairs in a communication device are provided. The apparatus (300) includes a quadrature phase generator (310), programmable delay elements (320, 330) and a c... | 06/22/2010 |
| 7738599 | Method and circuit for generating an auxiliary symbol for adjusting a QAM demodulator In a quadrature amplitude (QAM) demodulator, an auxiliary symbol may be utilized in place of the decision symbol to adjust the decision-feedback loops within the demodulator. For the formation and definition of the auxiliary symbol, the radius and angle information ... | 06/15/2010 |
| 7724842 | System and method for EVM self-test A system and method for EVM self-testing a communication device is provided including receiving (305) a complex waveform, sampling (310) first and second sample voltages from the complex waveform, selecting (315) first and second ideal voltages ... | 05/25/2010 |
| 7702038 | Radio frequency (RF) receiver with amplitude-shifted keying/frequency-shifted keying (ASK/FSK) duty cycle optimization algorithm A radio frequency (RF) receiver for receiving transmissions of different modulations includes cycling between a first mode for receiving transmissions of a first modulation that occurs frequently and a second mode for receiving transmission of a second modulation th... | 04/20/2010 |
| 7643578 | Angle estimation for modulated signal Angle estimation for modulated signal. A novel compensation technique is presented by which angle estimation may be performed for a modulated signal. More specifically, the angle between a constellation corresponding to a received signal and a constellation correspo... | 01/05/2010 |
| 7620124 | Direct conversion receiver and receiving method A receiving method and a direct conversion receiver are provided. The receiver comprises a mixer (308) for mixing a received signal into a base band signal comprising I and Q branches, and an A/D converter (316) for converting the base band signal into... | 11/17/2009 |
| 7602862 | Mixing module and methods for use therewith A mixing module includes a plurality of switched sample modules operably for generating a corresponding plurality of samples of an analog input signal in response to a control signal. A control module generates a mixing sequence and a control signal based on the mix... | 10/13/2009 |
| 7564926 | Method and device for calculating zero-crossing reference sequences for signal detection of angle-modulated signals based on zero crossings of the received signal A method for calculating zero-crossing reference sequences ({ti}) for the data detection of a sequence of zero crossings ({{circumflex over (t)}i}) of a received signal is disclosed. The data detection is determined in a receiver, wherein the r... | 07/21/2009 |
| 7437137 | Mixer system A mixer system includes a multi-phase signal generator, a mixer, and a mixer control circuit. The multi-phase signal generator generates a plurality of mixer input signals, where each has a frequency equal to the others, and a phase, and where the phases are distrib... | 10/14/2008 |
| 7426246 | Dual layer signal processing in a layered modulation digital signal system Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital co... | 09/16/2008 |
| 7424066 | Receiver structures for selectable direct conversion and low intermediate frequency operational modes Receiver embodiments are disclosed that can process a wide range of transmission bandwidths over a wide range of transmission frequencies and provide reduced converter sampling rates, filter bandwidths, and filter tuning ranges and enhanced signal-to-noise performan... | 09/09/2008 |
| 7379723 | Local oscillator and mixer for transceiver In one embodiment, a local oscillator and mixer architecture may include a frequency divider having I and Q channel master storage elements formed of devices of a first size, and I and Q channel slave storage elements formed of devices of a second size, where the se... | 05/27/2008 |
| 7372896 | Iterative detection and decoding for a MIMO-OFDM system Techniques to iteratively detect and decode data transmitted in a wireless (e.g., MIMO-OFDM) communication system. The iterative detection and decoding is performed by iteratively passing soft (multi-bit) “a priori” information between a detector and a decoder. ... | 05/13/2008 |
| 7369816 | Highly accurate temperature sensor employing mixed-signal components A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry ... | 05/06/2008 |
| 7369040 | Transmitter modulation switching An example receiver/transmitter for a passive start and entry system switches between amplitude shift keyed modulation and frequency shift keyed modulation to maintain clear uninterrupted and dependable communication with a remote transmitter in the presence of inte... | 05/06/2008 |
| 7362107 | Systems and methods for automatically eliminating imbalance between signals A calibrating system for automatically eliminating or reducing imbalance between a first signal and a second signal is disclosed. The calibrating system includes: a programmable delay module, receiving to the first and the second signals; a phase detecting module, c... | 04/22/2008 |
| 7362694 | Programmable identity of I and Q channels A multiplexing scheme to select either an I component or a Q component for input to I channel and Q channel inputs of a baseband receiver. The selection of which of the I or Q component to place on the I channel input and which other to place on the Q channel input ... | 04/22/2008 |
| 7359456 | Communication system and communication device A communication system for transmitting a transmission signal in digital form from a transmitter to a receiver is disclosed. The transmitter includes a modulation part modulating a carrier wave in accordance with the transmission signal according to frequency modula... | 04/15/2008 |
| 7356318 | Quadrature subharmonic mixer A quadrature subharmonic mixer comprises a polyphase filter configured to generate quadrature components of a local oscillator (LO) reference signal, a summing and scaling element configured to create additional components of the LO reference signal, and a plurality... | 04/08/2008 |
| 7356324 | Mobile radio receiver device The invention is directed to a receiver arrangement, for example, in a mobile radio, which allows the use of slowly locking phase locked loops for a point-to-point connection between two transceivers, even in the case of a heterodyne receiver structure. The need to ... | 04/08/2008 |
| 7356103 | Signal processing circuit and quadrature demodulation apparatus and method of estimating error thereof To provide a signal processing circuit which makes it possible to accurately estimate not only amplitude error but also phase error of a signal caused by device characteristics of components of a receiver, correct swiftly the error component without providing feedba... | 04/08/2008 |
| 7349484 | Adjustable dual-band link A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a baseband circuit and at least a passband circuit. The baseband circui... | 03/25/2008 |
| 7349673 | Adaptive radio transceiver with an antenna matching circuit An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 03/25/2008 |
| 7349493 | Demodulation with separate branches for phase and amplitude A receiver architecture is disclosed for use in Time-Division Multiple Access (TDMA) and related digital radio applications which combines the principal benefits of the conventional hard-limiting and linear receiver architectures to support switched-antenna diversit... | 03/25/2008 |
| 7343050 | Image synthesizing apparatus, image synthesizing method and a computer readable recording medium having recorded a program Disclosed is an image synthesizing apparatus which extracts plural images of different magnification ratios from a single piece of image data and combines those images to provide a moving image equivalent to a moving image zoomed up in moving image pickup. In record... | 03/11/2008 |
| 7342455 | Temperature sensor insensitive to device offsets with independent adjustment of slope and reference temperature A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry ... | 03/11/2008 |
| 7336732 | Carrier frequency detection for signal acquisition A carrier frequency in a filtered received M-ary phase-shift keyed (MPSK) modulated signal having in-phase and quadrature components is detected by processing the filtered received signal to remove modulation components and thereby generate a test signal at the carr... | 02/26/2008 |
| 7336717 | Receiver circuit, in particular for a mobile radio A radio receiver with a low intermediate frequency has a first mixer stage that can be fed with a modulated input signal and at whose output a complex intermediate frequency signal can be derived. Connected downstream of the first mixer stage is a limiting amplifier... | 02/26/2008 |
| 7336731 | Demodulator with phase-adjusting function A demodulator with a phase-adjusting function including a detector including a delay detector delaying an input signal in delaying stages using a first clock obtained by frequency-dividing a sampling-clock at a first-ratio to output a delayed modulated signal, the s... | 02/26/2008 |
| 7333792 | Multi-carrier receiving method and apparatus An FFT unit subjects a baseband signal to FFT operation. An IQ-to-phase conversion unit converts an in-phase component value and a quadrature component value of each of a plurality of signals on respective subcarriers subjected to FFT into a phase component value. A... | 02/19/2008 |
| 7327776 | Time domain spreading method and apparatus for a UWB receiver comprising fast fourier transform and exchange of real and imaginary complex signal components A time domain spreading method and apparatus for a UWB receiver are provided. Wherein, a series of received symbol signals are received by the UWB receiver, and transformed by the fast Fourier transform to obtain a series of transformed signals Y(m) according to one... | 02/05/2008 |
