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| Number | Title | Issue Date |
| 8412138 | Digital signal processing system and multi-signal connector thereof A multi-signal connector includes a first tuner, a first demodulator, a first radio frequency signal pin, a first ground signal pin and digital signal pins, and the first radio frequency signal pin transmits a first radio frequency signal. The first tuner receives t... | 04/02/2013 |
| 8385868 | Diversity antenna system and method utilizing a threshold value An antenna system for receiving an RF signal from a first antenna and a second antenna includes a phase shift circuit. The phase shift circuit shifts a phase of the RF signal from the second antenna by one of a plurality of possible phase shifts to produce a phase s... | 02/26/2013 |
| 8335483 | Receiver device, system, and method for low-energy reception of data A receiver device, A system and a method for reception of a signal having an amplitude that has been modulated with information, wherein a resistive element is provided that converts an electrical quantity into a physical parameter. ... | 12/18/2012 |
| 8320862 | Receiver and receiving system When the first switching circuit outputs the output signal of the first selection filter, the receiver switches the output signal of the second switching circuit to the output signal of the delay compensator, and when the first switching circuit outputs the output s... | 11/27/2012 |
| 8170512 | Wireless transmitter A wireless transmitter that includes a phase rotating unit which adds phase rotation to signals which are respectively input to antennas and adds first phase rotation for controlling the maximum delay time between the antennas and a second phase rotation for control... | 05/01/2012 |
| 8155610 | Combining multiple frequency modulation (FM) signals in a receiver In one embodiment, the present invention provide a method for detecting signal quality metrics of a constant modulo (CM) signal received in two different signal paths, and combining the signal from the two signal paths based at least in part on the detected first an... | 04/10/2012 |
| 8140037 | Wireless transmission apparatus and modulation scheme selection method A wireless transmission apparatus that can accurately select an optimal modulation scheme on a per block basis in a multi-carrier communication system in which block division of subcarriers and adaptive modulation are performed. In this wireless transmission apparat... | 03/20/2012 |
| 8121570 | Method and system for flexible FM tuning A system for processing signals is disclosed and may include a single chip having an integrated Bluetooth radio and an integrated FM radio. The single chip may include at least one processor that enables selecting from a range of FM channels, a particular frequency ... | 02/21/2012 |
| 8116708 | Wireless receiver A wireless receiver that includes a reception unit which, in the case in which the frequency bandwidth of the chunk is Fc, receives a) data to which phase rotation for controlling the maximum delay time between the plurality of transmission antennas is added so that... | 02/14/2012 |
| 8078125 | Method for demodulating a modulated signal, demodulator and receiver A demodulator (6) for demodulating a modulated signal (3) comprises a Hubert transformer (7) for generating a Hubert transformed modulated signal (18) of the modulated signal (3). The Hubert transformed modulated signal (18)... | 12/13/2011 |
| 8064858 | Digital carrier-recovery scheme for FM stereo detection Systems and techniques for processing signals include, in at least one aspect, a method including: receiving an input signal having an associated carrier frequency; multiplying the input signal to produce a multiplied signal; filtering the multiplied signal to produ... | 11/22/2011 |
| 8055224 | Wireless receiver A wireless receiver that includes a reception unit which, in the case in which the frequency bandwidth of the chunk is Fc, receives a) data to which phase rotation for controlling the maximum delay time between the plurality of transmission antennas is added so that... | 11/08/2011 |
| 7949320 | Constant modulus indication for detection of RF signals In a technique for detecting single or multiple channels in a broadcast RF signal, a receiver determines a constant modulus indication value for each frequency of the receiver's local oscillator, as that oscillator is tuned across a range of possible channel frequen... | 05/24/2011 |
| 7894784 | Wireless receiver A wireless receiver that includes a reception unit which, in the case in which the frequency bandwidth of the chunk is Fc, receives a) data to which phase rotation for controlling the maximum delay time between the plurality of transmission antennas is added so that... | 02/22/2011 |
| 7826812 | Digital carrier-recovery scheme for FM stereo detection Systems and techniques for digital processing of FM signals include, in at least one aspect, an FM digital processing method including receiving one or more digital signals including a first signal having a first frequency; obtaining a second signal by multiplying t... | 11/02/2010 |
| 7826811 | Phase modulation apparatus and wireless communication apparatus A two-point modulation type phase apparatus and a wireless communication apparatus capable of achieving a reduction in circuit scale and low power consumption while maintaining modulation precision. It is possible to provide a D/A converter (150) that convert... | 11/02/2010 |
| 7805119 | Multi-frequency detector The method provides a method and device for detecting in a single or multi frequency signal, one or more frequencies from a predetermined set of frequencies. The Signal is subjected to a complex filter substantially passing all of the frequencies in the predetermine... | 09/28/2010 |
| 7697908 | Duty-to-voltage amplifier, FM receiver and method for amplifying a peak of a multiplexed signal A FM receiver comprises an IF filter, a demodulator and a decoder. The IF filter generates an RSSI and a FM modulated signal in response to a FM signal. The demodulator comprises a duty-to-voltage amplifier for amplifying a peak of a MPX signal. The duty-to-voltage ... | 04/13/2010 |
| 7546100 | System for generating amplitude matched 45 degree phase separated local oscillator signals A system for generating amplitude matched 45 degree phase separated signals is disclosed. Embodiments of the system for generating amplitude matched 45 degree phase separated signals include a filter arrangement including a plurality of nodes, an adjustable element ... | 06/09/2009 |
| 7542748 | Signal processing circuit comprising an attenuating unit, a detecting unit, and an attenuation rate setting unit A signal processing circuit is disclosed which comprises: an attenuating unit that attenuates a demodulated signal acquired by detecting a received signal; a detecting unit that detects a first signal indicating intensity of the demodulated signal; and an attenuatio... | 06/02/2009 |
| 7418248 | Signal reception device, signal transmission device, radio communication system, and signal reception method A signal reception device is disclosed that is able to improve interference cancellation capabilities even when signals having different center frequencies exist on the same frequency band. The signal reception device includes an interference suppression unit to gen... | 08/26/2008 |
| 7395042 | Enhancing signals in a two-way radio system Embodiments of the present invention can be used to enhance signals in a peer-to-peer radio system, such as a two-way radio system. In one embodiment, the invention includes receiving a communications signal on a channel from a remote radio at a radio using a plural... | 07/01/2008 |
| 7386052 | Automation device using FSK modulation The invention relates to an automation device, with which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (110), which is assigned at least one ... | 06/10/2008 |
| 7386291 | Integrated millimeter-wave quadrature generator An off-chip signal is provided to a differential branch-line directional coupler implemented entirely on-chip. The coupler produces differential quadrature signals, which are then buffered and applied to a quadrature mixer. The coupler is implemented entirely on-chi... | 06/10/2008 |
| 7369621 | Radio communication base station device, radio communication mobile station device, and radio communication method In order to perform appropriate reception quality control on each mobile station in a multimedia broadcast/multicast service, a layered coding section 101 encodes input data by dividing the input data into two layers and obtains a first layer code string and ... | 05/06/2008 |
| 7366488 | Digital carrier-recovery scheme for FM stereo detection Systems and techniques for digital processing of FM signals. Digital processing may include recovering a carrier signal at a second frequency based on a reference signal at a first frequency. ... | 04/29/2008 |
| 7359680 | Delay calibration in polar modulation transmitters A method and apparatus for dynamically compensating for delay mismatch between a supply signal and an input signal of a power amplifier in polar modulation transmitters. One exemplary polar modulation transmitter according to the present invention comprises a power ... | 04/15/2008 |
| 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 |
| 7349717 | Front-end circuit for wireless transmission systems A functional block of a front-end circuit for a communication device, which is employed for multi-band and/or multi-mode operation, is proposed. By positioning, according to this invention, a pin diode switch in one of the parallel signal paths instead of positionin... | 03/25/2008 |
| 7327992 | Tracking generator with internal vector modulation source A tracking generator for an RF measurement instrument having a receiver and a controller includes a vector modulator internal to the tracking generator. The internal vector modulator modulates complex baseband signals based on data from the controller to produce a v... | 02/05/2008 |
| 7319884 | FM radio device and transmission power control method A transmission power control method includes a step (a) of receiving by a receiver a radio wave signal, a step (b) of judging whether a first identification signal is included in the received radio wave signal, a step (c) of detecting a reception electric field inte... | 01/15/2008 |
| 7313370 | Intermodulation product cancellation in communications Intermodulation products in the amplifier circuitry of a communications device are cancelled. A primary carrier is processed in a first main branch of amplifier circuit. The primary carrier is coupled to a secondary branch through a first signal splitters. Intermodu... | 12/25/2007 |
| 7289005 | Polar modulator and a method for modulation of a signal A polar modulator contains a phase locked loop which is designed to emit a radio-frequency signal at one frequency to one output, with the frequency being derived from the reference signal and from a phase modulation signal at a control input of the phase locked loo... | 10/30/2007 |
| 7289573 | Modulator/transmitter apparatus and method Method and apparatus for providing an amplified modulated radio frequency signal, the method comprising the steps of providing a radio frequency (RF) oscillatory signal, generating from the RF oscillatory signal and an input signal a pair of phase modulated phase co... | 10/30/2007 |
| 7272375 | Integrated low-IF terrestrial audio broadcast receiver and associated method An integrated low-IF (low intermediate frequency) terrestrial broadcast receiver and associated method are disclosed that provide an advantageous and cost-efficient solution. The integrated receiver includes a mixer, local oscillator generation circuitry, low-IF con... | 09/18/2007 |
| 7228120 | Circuit and method for reducing direct current biases A method is provided for reducing a DC bias in a receiver. This method includes isolating a second circuit portion from a first circuit portion (535) and determining a second DC bias correction value for the second circuit portion that will eliminate a second... | 06/05/2007 |
| 7215931 | Method and apparatus for up-and-down-conversion of radio frequency (RF) signals This patent describes a method and system which overcomes the LO-leakage problem during modulation and demodulation, common to direct conversion and similar RF transmitters and receivers. This problem is solved using a virtual local oscillator (VLO™) signal which ... | 05/08/2007 |
| 7203253 | Method and apparatus of cross-correlation Briefly, a method and apparatus to calculate cross-correlation values of complex binary sequences are provided. The apparatus may include a transformation unit and a cross-correlator. The cross-correlator may include a cross-correlation controller to provide, based ... | 04/10/2007 |
| 7203472 | Method and apparatus providing calibration technique for RF performance tuning A method is disclosed for operating a RF receiver of a communications equipment, as is circuitry for implementing the method. The method includes, while operating under the control of a data processor of the communications equipment, generating a calibration signal;... | 04/10/2007 |
| 7190733 | Memoryless spectrum correction algorithm for non-ideal I/Q demodulators An algorithm for correcting the output of an analog I/Q demodulator without the need for calibration or storing state information. The output of the analog I/Q demodulator is digitized, and the discrete-time samples are divided into segments. A digital frequency tra... | 03/13/2007 |
