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| Number | Title | Issue Date |
| 8093942 | Frequency translation module data clamp An architecture for processing signal communications between a frequency translation module and an integrated receiver decoder. According to an exemplary embodiment, the signal processing apparatus comprises a demodulator for generating a first signal responsive to ... | 01/10/2012 |
| 7816979 | Configurable demodulator and demodulation method A method and system for a frequency shift key demodulation is provided. The system includes a counting block for counting a reference clock within a window defined by a modulated signal, a detector for comparing a count value output from the counting block with digi... | 10/19/2010 |
| 7532064 | FSK demodulator circuit A demodulator circuit for demodulating a signal modulated by frequency shift keying discriminates the frequency of the signal to produce demodulated data. When the demodulated data match a known synchronization pattern, or are complementary to the known synchronizat... | 05/12/2009 |
| 7482862 | Demodulation method and apparatus A demodulation circuit and method are provided. The demodulation circuit includes a transformation circuit which is configured to transform the received signal into a modified signal representation in which both amplitude-varying information and frequency-varying in... | 01/27/2009 |
| 7474147 | Frequency shift keying signal demodulator method and apparatus A method and apparatus for a frequency shift keying (FSK) demodulator use a configuration to improve the autocorrelation for better receiver performance. The demodulator uses parallel first and second lines connected to the same input signal, the first line having a... | 01/06/2009 |
| 7436263 | Apparatus and method for presenting a modulated output signal at an output locus An apparatus that presents an output signal that is modulated by input signal includes: (a) A signal source providing a signal at a reference frequency. (b) A frequency comparer coupled with the signal source and the output signal for comparing the extant output sig... | 10/14/2008 |
| 7415078 | Demodulation for phase modulation A method and pre-processor for processing a MCPM signal including a phase multiplier for multiplying a MCPM signal by a scaling factor. The pre-processor also includes a frequency shifter for shifting the scaled MCPM signal to create a frequency offset. The pre-proc... | 08/19/2008 |
| 7397300 | FSK demodulator system and method An FSK demodulator system with tunable spectral shaping including a pair of quadri-correlators responsive to first and second quadrature signals, one of the pair deriving first and second signals representative of the frequency deviation of the quadrature signals at... | 07/08/2008 |
| 7372914 | Control system methods and apparatus for inductive communication across an isolation barrier Improved control apparatus and methods transfer information between devices, such as controllers and field devices, utilizing a modulator that generates a pulse width modulated (PWM) signal containing information to be transferred by a first of the devices, e.g., th... | 05/13/2008 |
| 7369629 | FSK signal demodulation circuit A demodulation circuit for demodulating an FSK signal comprising a long bit having a long bit period and a short bit having a short bit period comprises a bit boundary detection section for detecting a bit boundary timing of each bit, and a bit determination section... | 05/06/2008 |
| 7362827 | System and method for the demodulation of IFF signals A method for the decoding of a signal in an interrogation/response type of communications system, the received signal being formed by a video signal and a signal containing the data, wherein the method comprises at least the following steps: 1) transposing the recei... | 04/22/2008 |
| 7330523 | Estimating frequency offset Frequency offset estimation apparatus for estimating the offset from a predetermined centre frequency of an input signal carrying a plurality of frequency shifted symbols, the apparatus comprising: a demodulator for demodulating the input signal to estimate the symb... | 02/12/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7301967 | Method and apparatus for processing custom time division multiplexed signals Method and apparatus for processing time division multiplexed (TDM) signals which may be custom in format. The TDM signal is translated to an intermediate frequency, or externally demodulated, input, and processed. Individual channels of either analog, digital or bo... | 11/27/2007 |
| 7298202 | FSK demodulator An FSK demodulator which outputs an enable signal in response to the detection of a data change point in a detected signal of an amplitude associated with the received frequency of an input FSK signal, outputs an average signal of the detected signal for each predet... | 11/20/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7295638 | Communication device A direct sequence spread spectrum (DSSS) receiver (100) consistent with certain embodiments has a frequency generator (112) that generates a local oscillator signal without use of a piezoelectric crystal. A frequency converter (108) receives the... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7286615 | FSK signal detector A detector includes a binarizer for binarizing the amplitude of an input FSK signal; a 2n-stage shift register having 2n registers for sequentially shifting the FSK signal binarized by the binarizer in response to a clock; and an adder for calculating a sum of a tot... | 10/23/2007 |
| 7283011 | Method for performing dual phase pulse modulation A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses whose widths represent groups of M data bits, with both the high and low pulses representing successive M-bit groups. Each of the 2 | 10/16/2007 |
| 7271677 | Inductive data and power link suitable for integration A system providing an inductive power and data link between an external transmitter and miniature internal receiver is presented. The system is suited to applications where the receiver must be of a small size and the system must consume very little power, such as a... | 09/18/2007 |
| 7266163 | FSK demodulator slicer with fast automatic DC offset compensation A data slicer for an FSK demodulator employs a peak and valley detector, each of which has a discharge path with selectable decay rates. The faster decay rate for the peak and valley detector outputs is selected when the difference between the current peak and valle... | 09/04/2007 |
| 7260158 | Digital broadcast receiver and digital broadcast receiving method A digital broadcast receiver capable of adequately receiving a higher-level layer service along with a lower-level layer service even if the reception CNR degrades. A demodulation decoding section (2) of the receiver judges on the basis of transport and multi... | 08/21/2007 |
| 7245671 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers Systems and methods for receiving non-coherent layered modulation 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 c... | 07/17/2007 |
| 7239675 | GFSK receiver A method for synchronizing a receiver to a stream of transmitted symbols that includes a known synchronization word. The method includes receiving a signal in which the symbols, including the synchronization word, are encoded by frequency shift keying. The signal is... | 07/03/2007 |
| 7231004 | System and method of low power demodulation of continuous phase modulated waveforms A radio system demodulates a continuous phase modulation waveform with a pulse count demodulator. The use of a pulse count demodulator reduces the receiver complexity and reduces power consumption, which makes such a system well suited for hand held or mobile units.... | 06/12/2007 |
| 7173981 | 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... | 02/06/2007 |
| 7173974 | Method and apparatus for computing soft decision input metrics to a turbo decoder A method and apparatus for computing soft decision input metrics to a turbo decoder includes circuits associated with eight-ary phase shift keyed (8PSK) modulation and sixteen-ary quadrature amplitude modulation (16QAM). In both implementations log-likelihood ratio ... | 02/06/2007 |
| 7173443 | Semiconductor test system A mixed signal test system for testing a semiconductor device having both an analog function and a digital function achieves improved resolution and low cost. The test system is formed of a functional test unit for testing a digital function of a device under test (... | 02/06/2007 |
| 7170431 | Data transmitting circuit and method based on differential value data encoding Disclosed is a data transmitting circuit and a method based on a differential value data encoding to reduce a data transmitting time by transmitting an encoded differential value. The circuit comprises an encoder for encoding and outputting a differential value betw... | 01/30/2007 |
| 7170930 | Receiver A method of equalizer adaptation involves comparing equalizer output values with a center threshold, and with at least one of a pair of outer thresholds, and adapting the equalizer in order to increase the degree of eye opening. The values of the outer thresh... | 01/30/2007 |
| 7149261 | Image reject circuit using sigma-delta conversion In a digital IF downconversion circuit, in-phase and quadrature signal components are processed in the form of a single serial digital bit stream through a set of simple logic in combination with a reconstruction filter. A source digital oscillator supplying digital... | 12/12/2006 |
| 7145963 | Method and apparatus for multiple phase splitting for dual band IQ subharmonic mixer drive chains A method and apparatus are provided for generating first and second modulation signals from a local oscillator signal for quadrature subharmonic modulation of a quadrature amplitude modulated information signal. The method includes the steps of delaying the local os... | 12/05/2006 |
| 7133457 | Joint timing recovery for multiple signal channels A spatial diversity receiver and method for determining a multichannel combined symbol timing marker that identifies an energy concentration for a combination of channel delay spreads in order to reduce the complexity of equalization. The receiver includes two or mo... | 11/07/2006 |
| 7116964 | Signal reception and processing method for cordless communications systems Channel selection of a received signal is first of all carried out, in the process, by way of an analog channel selection filter. The signal is then converted to a digital discrete-time and discrete-value signal. Finally, the continuous-time and continuous-value sig... | 10/03/2006 |
| 7110444 | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal gen... | 09/19/2006 |
| 7110477 | Gaussian frequency shift keying digital demodulator A digital demodulator employing a digital differential detection mechanism based on extracting phase differences directly from the I and Q signals after downconversion to zero-IF and image rejection are performed. The phase of the input I and Q signals is determined... | 09/19/2006 |
| 7110435 | Spread spectrum applications of universal frequency translation Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion an... | 09/19/2006 |
| 7102498 | Remote keyless entry system with two modes of demodulation A remote signaling receiver system includes a receiver that operates in two different modes of demodulation to accommodate different types of signals from different types of transmitting devices. A first demodulator, preferably an ASK demodulator, is adapted to proc... | 09/05/2006 |
| 7103110 | Dual phase pulse modulation encoder circuit An dual phase pulse modulation (DPPM) encoder circuit converts data into a series of high and low signal pulses, each of whose time durations or pulse widths represents a group of M data bits, with the alternating high and low pulses representing successive groups. ... | 09/05/2006 |
