| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455337000 | Discriminator or demodulator | 13 |
| 20110281543 | SYSTEM AND METHOD FOR COMBINED HOME NETWORK COMMUNICATIONS AND BROADCAST RECEPTION IN A SETTOP BOX - A method and apparatus for demodulating different type of signals having at least a portion of overlapping frequency ranges is provided. The method and apparatus receives at least one a broadcast signal and a home networking signal, wherein the frequency range of the broadcast signal overlaps the frequency range of the home networking signal. The system further determines if the received signal is a broadcast signal or a home networking signal and provides the respective signal to a demodulator for demodulation. | 11-17-2011 |
| 20090098848 | MODULATED IF RECEIVER AND METHOD - A modulated intermediate frequency receiver is shown having a low noise amplifier for receiving a radio frequency signal and a modulation source for generating a modulation signal. A local oscillator generates a modulated local oscillator signal in response to the modulation signal. A first mixer mixes the output of the low noise amplifier with the output of the local oscillator. The output of the mixer is DC filtered and receive bandwidth filtered before input to a demodulator that generates a demodulated received signal. Further embodiments are shown for a complex receiver and having phase or frequency modulation compensation. | 04-16-2009 |
| 20110034142 | DETECTION OF TRANSIENT SIGNALS IN DOPPLER SPECTRA - Signal processing is used to detect transient signals in the presence of noise. Two embodiments are disclosed. In both embodiments, the time series from a remote sensor is broken into a number of short time series. The power spectrum of each short time series are then calculated along with the mean noise level. The moments of each peak in every power spectrum are calculated and the peak with the largest power selected from each power spectrum. A histogram of the moments from these selected peaks is generated and normalized to become a measured PDF. In addition, a pre-determined PDF is derived, in the same method as above, from theoretically calculated noise, numerically simulated noise, or measured noise. Comparison between the measured and pre-determined PDF's establish the detection of a transient signal. The first embodiment compares the area between the measured and pre-determined PDF's against a threshold to determine detection. In a second embodiment, the differences between the measured and pre-determined PDF's are weighted and summed to form a score. This score is compared to a threshold to determine detection. | 02-10-2011 |
| 20120178399 | INTERACTIVE SYSTEM - An interactive system is provided. The interactive system includes a handheld device and an insertion device. An interactive application program is embedded into the handheld device. The insertion device has a protective case for protecting the handheld device, and the insertion device also has a slave circuit, where the insertion device does not have a screen or a keypad. When the interactive application program is activated by a user through putting the handheld device into the insertion device, the handheld device will display an interactive graphical user interface so as to guide the user to set the insertion device, and the handheld device controls the functions of the slave circuit. | 07-12-2012 |
| 20100029240 | RECEIVING SYSTEMS AND METHODS FOR AUDIO PROCESSING - A receiving system for audio processing includes a first demodulation unit and a second demodulation unit. The first demodulation unit is utilized for receiving an audio signal and generating a first demodulated audio signal. The second demodulation unit is utilized for selectively receiving the audio signal or the first demodulated audio signal according to a setting of a television audio system which the receiving system is applied, and generating a second demodulated audio signal. | 02-04-2010 |
| 20120003951 | END OF MODULATION DETECTION - A method for detecting an end of modulation in a backscattered radio frequency signal according to one embodiment includes generating a fast average of a magnitude or power of an incoming signal; generating a slow average of the magnitude or power of the incoming signal; determining an end of modulation based on a relationship between the fast and slow averages; and outputting an end of modulation signal upon determining the end of modulation. A system for detecting an end of modulation in a backscattered radio frequency signal according to one embodiment includes a window integrator for generating a fast moving average of a magnitude or power of an incoming signal; a leaky integrator for generating a slow moving average of the magnitude or power of the incoming signal; logic for determining an end of modulation when the fast moving average crosses below the slow moving average; and logic for outputting an end of modulation signal. Additional systems and methods are also presented. | 01-05-2012 |
| 20120028596 | WIRELESS COMMUNICATION APPARATUS CAPABLE OF RAPIDLY CHANGING DIRECTIONAL PATTERNS OF MULTIPLE STEERABLE ANTENNA APPARATUSES - A directional pattern table memory stores combined directional pattern groups in each of which combined directional patterns are ordered by different predetermined priority according to a different radio propagation environment. A controller computes a communication performance expected value based on RSSIs for when an initial combined directional pattern is set on steerable antenna apparatuses; selects one combined directional pattern group based on relative strengths of RSSIs; and according to the priority, sequentially sets combined directional patterns of the selected one combined directional pattern group, on the steerable antenna apparatuses, computes a communication performance value based on a PHY rate and a PER at each of sequential settings, and performs communication using a combined directional pattern with a communication performance value that first exceeds the communication performance expected value. | 02-02-2012 |
| 20120208483 | RADIO APPARATUS - A radio apparatus includes an antenna; an amplifier that amplifies a radio signal, received via the antenna; a first mixer that frequency converts the amplified radio signal to generate a first analog signal; a first A/D converter that converts the first analog signal to generate a first digital signal; a second mixer that frequency converts the amplified signal to generate a second analog signal; a second A/D converter means that converts the second analog signal to generate a second digital signal; a demodulator means that demodulates the first and second digital signals to generate a demodulated signal; a detector that detects a preamble from the first digital signal; and a control means that halts the second mixer and second A/D converter during the wait for the radio signal and that activates the second mixer and second A/D converter when the detector detects the preamble. | 08-16-2012 |
| 20080299937 | Sampling Filter - The present invention aims at providing a sampling filter capable of changing a filtering characteristic without use of a complicate waveform as a control signal. A sampling filter | 12-04-2008 |
| 20110045793 | Method circuit and system for receiving and processing multi-frames - Disclosed is a receiver containing a receive chain, a shared buffer, a decoder circuit, and an output interface. The receive chain may be adapted to receive and demodulate a data frame bearing signal received at one or more carrier frequencies. The receive chain may be further adapted to store demodulated data in a shared buffer. The decoder circuit may be adapted to read received data from the shared buffer, process the received data and write the decoded data back to the shared buffer. The output interface may be adapted to read the processed data and to provide read data to one or more external data sink circuits or applications. | 02-24-2011 |
| 20100130158 | Low-Cost Receiver Using Tracking Filter - A receiver ( | 05-27-2010 |
| 20130017799 | PATIENT LEAKAGE CURRENT LIMITATIONAANM Feldchtein; MikhaelAACI Qiriat YamAACO ILAAGP Feldchtein; Mikhael Qiriat Yam IL - A baseband receiver, consisting of a receiver input port, configured to receive a baseband signal generated in response to electrical activity in tissue of a human patient. The receiver includes a modulator, configured to modulate a local oscillator signal with the baseband signal, and an isolating device configured to receive the modulated local oscillator signal at an input port of the device and in response to generate a modulated output local oscillator signal at an output port of the device. The receiver further includes a demodulator configured to demodulate the modulated output local oscillator signal with the local oscillator signal so as to recover the baseband signal. | 01-17-2013 |
| 20080227423 | METHOD TO ENABLE OPEN LOOP ANTENNA TRANSMIT DIVERSITY ON CHANNELS HAVING DEDICATED PILOTS - Methods, computer-readable media, and devices are provided that support antenna diversity in a communication system. In an exemplary method, a signal is received from a first device at a second device in a first channel. A determination is made concerning whether or not transmit diversity is applied to the first channel. If transmit diversity is applied to the first channel; a first channel estimate is determined based on a first pilot signal received from the first device and a second channel estimate is determined based on a second pilot signal received from the first device. The received signal is decoded based on the first channel estimate and the second channel estimate. | 09-18-2008 |
