| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455150100 |
Signal selection based on frequency (e.g., tuning)
| 370 |
| 455230000 |
Local control of receiver operation
| 344 |
| 455296000 |
Noise or interference elimination
| 326 |
| 455226100 |
Measuring or testing of receiver
| 271 |
| 455313000 |
Frequency modifying or conversion
| 252 |
| 455334000 |
With particular receiver circuit
| 194 |
| 455269000 |
With wave collector (e.g., antenna)
| 170 |
| 455205000 |
Frequency or phase modulation
| 116 |
| 455132000 |
Plural receivers
| 63 |
| 455344000 |
Combined with diverse art device
| 30 |
| 455131000 |
Frequency conversion between signal source (e.g., wave collector) and receiver
| 28 |
| 455142000 |
Convertible to different type (e.g., AM to FM)
| 20 |
| 455347000 |
Cabinet, housing, or chassis structure
| 19 |
| 455295000 |
Modulation distortion or cross talk correction or elimination
| 14 |
| 455227000 |
Responsive to an input signal of particular predetermined frequency
| 9 |
| 455218000 |
Squelch
| 8 |
| 455352000 |
Remote control of receiver
| 6 |
| 455217000 |
With protection circuit for receiver circuit | 2 |
| 20120040632 | Receive band selection and electrostatic discharge protection in a transceiver - According to one embodiment, an input control unit to provide isolation and electrostatic discharge (ESD) protection for a circuit in an RF transceiver comprises a switching device coupled between an input of the circuit and ground. The switching device is configured to provide ESD protection while the circuit is activated. The switching device is further configured to ground the input while the circuit is non-activated, thereby concurrently isolating the input and providing ESD protection. A method for providing isolation and ESD protection for a circuit in an RF transceiver comprises activating the circuit, providing ESD protection while the circuit is activated, deactivating the circuit, and coupling an input of the circuit to ground, thereby concurrently isolating the input and providing ESD protection while the circuit is non-activated. The method and switching device can be used to provide isolation and ESD protection to receive bands in the RF transceiver. | 02-16-2012 |
| 20120309335 | Terrestrial Broadcasting Receiving Module - Disclosed herein is a terrestrial broadcasting receiving module including: an antenna receiving a wireless signal; a distributing unit distributing and outputting the wireless signal into a wireless signal including a VHF band signal and a wireless signal including a UHF band signal; a VHF processing unit generating and outputting a VHF intermediate frequency signal from the wireless signal including the VHF band signal; a UHF processing unit generating and outputting a UHF intermediate frequency signal from the wireless signal including the UHF band signal; and a demodulating unit demodulating the VHF intermediate frequency signal output from the VHF processing unit and the UHF intermediate frequency signal output from the UHF processing unit. Therefore, a manufacturing cost may be reduced, switching loss may be prevented. | 12-06-2012 |
| 455149000 |
Plural output (e.g., plural speakers) (not stereo) | 1 |
| 20130303096 | WIRELESS HEADPHONES DEVICE - The present invention is a wireless headphones device utilized by a user with a head that includes a right headphone that has an exterior cover portion and an interior portion and includes a radio tuner, a volume control button, a display screen, a recharging port, a headband and a first plurality of pads and a left headphone that has an exterior cover portion and an interior portion and includes a SD card insert, a second plurality of pads and a plurality of control buttons, wherein the headband has an inside surface and adjustably places the wireless headphones device over the user's head. | 11-14-2013 |
| Entries |
| Document | Title | Date |
|---|
| 20080200135 | MIXER WITH SELF-CALIBRATING CARRIER LEAKAGE MECHANISM - An embodiment of a mixer with carrier leakage self-calibrating is disclosed. The mixer comprises a double balanced mixer, a gm stage comprising a first processing unit and a second processing unit, a current duplicating circuit, a capacitor, a controller and a current compensation unit. The current duplicating circuit selects the first processing unit or the second processing unit and duplicates a duplicated current of the selected processing unit to charge the capacitor. The capacitor has a first terminal and a second terminal, wherein the second terminal is grounded and the first terminal receives the duplicated current. The controller determines a charge time of the capacitor to generate a compensation signal, wherein the charge time is the time that the voltage of the capacitor is charged to equal to a reference voltage. The current compensation unit receives the compensation signal to generate a compensation current to the mixer. | 08-21-2008 |
| 20080268801 | SYSTEM AND METHOD FOR FILTERING PROGRAM SERVICE NAME DATA - A system and method for filtering Program Service Name (“PSN”) data includes a processor, an antenna in communication with the processor, a display device in communication with the processor, and a memory unit in communication with the processor. The memory unit contains instruction executable by the processor to configure the processor to receive a signal from a wireless source via the antenna, the signal having PSN data, determine if the PSN data is a static PSN or a slowly updated PSN, and display the PSN data on the display device if the PSN data is a static PSN or a slowly updated PSN. | 10-30-2008 |
| 20080311869 | Broadcast Information Receiving Terminal - A broadcast information receiving terminal which notifies a user, when a broadcast program is unreceivable, of such unreceivability, and also notifies the user, when a reception of the broadcast program has been recovered, of such recovery of the reception is provided. | 12-18-2008 |
| 20090004983 | METHOD AND SYSTEM FOR A SECOND ORDER INPUT INTERCEPT POINT (IIP2) CORRECTION - In RF transceivers, a method and system for a second order input intercept point (IIP2) correction are provided. A DC offset sensor may detect DC offset voltages produced by blocker signals in “I” and “Q” signal component paths in an RF receiver. The DC offset sensor may generate control signals which may be utilized by a first and second injection circuits to generate DC offset currents that compensate for the DC offset voltages in the signal component paths. An injection circuit may utilize current drivers to generate binary weighted currents which may be added together to produce a DC offset current. The polarity of the DC offset current and the selection of which current drivers to use may be determined by the control signals. A calibration voltage may also be utilized to correct or adjust the gain in the injection circuit. | 01-01-2009 |
| 20090017782 | METHOD FOR DETERMINING LINE-OF-SIGHT (LOS) DISTANCE BETWEEN REMOTE COMMUNICATIONS DEVICES - An apparatus for wireless communications is disclosed including a super regenerative receiver adapted to receive an incoming signal from a remote apparatus, and a circuit adapted to at least partially determine the distance to the remote apparatus based on the incoming signal. The super regenerative receiver may be configured for relatively high sensitivity to allow the distance measurement circuit to discern the line-of-sight (LOS) portion of the incoming signal from the non-LOS portion thereof. Using the time of the LOS portion of the incoming signal, the circuit is able to more accurately determine the distance to the remote apparatus. By sending a signal to the remote apparatus, and receiving a response signal from the remote apparatus, the circuit may determine the distance to the remote apparatus from the respective times of the transmission and reception of the signals. | 01-15-2009 |
| 20090047918 | Mix and Match Preselector and RF Receiver - A measuring receiver includes a preselector, spectrum analyzer and a signal source. The preselector has a filtered path for pre-filtering an input signal and outputting a pre-filtered signal. The preselector also has a bypass path for passing the input signal directly from the signal source to the spectrum analyzer. A switch switches the signal between the filtered path and the bypass path. The measuring receiver is calibrated by calibrating a bypass path of the preselector and then storing the resulting bypass path calibration data. The signal source and the spectrum analyzer are connected to the preselector. A signal from the signal source is output to the preselector and the difference between signals passing through a filtered path and bypass path are measured to produce difference measurement data. The difference measurement data is combined with the bypass calibration data to calibrate the filtered path of the preselector. | 02-19-2009 |
| 20090075609 | Synchronization in Communication Systems - A method and system to generate synchronization information from received signals in communication applications. A first embodiment is a method to generate synchronization information in a communications receiver. The method includes providing a fixed gain to a received analog signal to generate a modified analog signal, converting the modified analog signal to a digital signal, extracting one or more sign bits from the digital signal, and generating synchronization information as a function of the one or more sign bits. A second embodiment is a system to generate synchronization information in a communications receiver. Various embodiments can be applied in several wireless and wired communication applications including, but not limited to, WiMAX applications. | 03-19-2009 |
| 20090088104 | Method and System for Supporting a High-Speed Wireless Communication Platform - One embodiment of the present invention sets forth a wireless receiver device, which includes a receiver front-end configured to convert a transmitted radio-frequency signal into an intermediate signal and a backend processing unit coupled to the receiver front-end through a differential-type signaling interface and also configured to recover content from the intermediate signal from the receiver front-end. | 04-02-2009 |
| 20090088105 | METHOD AND SYSTEM FOR UTILIZING A PROGRAMMABLE COPLANAR WAVEGUIDE OR MICROSTRIP BANDPASS FILTER FOR UNDERSAMPLING IN A RECEIVER - Methods and systems for a programmable coplanar or microstrip bandpass filter for undersampling in a receiver are disclosed and may include band-limiting a received wireless signal utilizing one or both of a programmable microstrip bandpass filter and a coplanar waveguide bandpass filter and undersampling the band-limited received wireless signal. A center frequency of the programmable microstrip bandpass filter may be tuned by adjusting a capacitance or an inductance of the programmable microstrip bandpass filter. The bandwidth of the programmable microstrip bandpass filter may be also be adjusted. A center frequency of the programmable coplanar waveguide bandpass filter may be tuned by adjusting a capacitance or an inductance of the programmable coplanar waveguide bandpass filter. The bandwidth of the programmable coplanar waveguide bandpass filter may also be adjusted. The band-limited, received wireless signal may be undersampled utilizing a sample and hold circuit. | 04-02-2009 |
| 20090131000 | RADIO RECEIVER SYSTEM - An oscillation circuit for a radio receiver system. The oscillator circuit includes a tank circuit, a first and second transistor, and a first and second low pass filter. The first transistor forms a first current loop when the first transistor is active. Similarly, the second transistor forms a second current loop when the second transistor is active. The first low pass filter is connected in an electrical series connection within the first current loop and the second low pass filter is connected in an electrical series connection within the second current loop. As such, the first and second low pass filter serve to reduce the gain of the oscillator circuit below a secondary resonant frequency of the tank circuit to prevent an oscillation condition, thereby preventing unwanted oscillations at a secondary resonant frequency. | 05-21-2009 |
| 20090149142 | RECEIVER CIRCUIT - A receiver circuit is capable of improving its operating characteristics. The receiver circuit includes a variable converter configured to output off-set control voltages in a first output range in a first operation mode and output the off-set control voltages in a second output range in a second operation mode according to a test mode activation signal, and a sense amplifier configured to sense input data based on a sensitivity, wherein the sensitivity is controlled by the off-set control voltages. | 06-11-2009 |
| 20090209216 | REFLECTOR FOR WIRELESS TELEVISION TRANSMISSIONS - One embodiment of the invention relates to a system for enhancing reception of radio-frequency (RF) signals by an audio-video device such as a high-definition television. The system comprises an audio-video device including a radio-frequency (RF) receiver to receive incoming EF signals, and an RF reflective element. The RF reflective element is positioned to reflect RF signals towards the audio-video device. The RF reflective element is at least partially imbedded with RF reflective materials to reflect undetected, RF signals destined for the audio-video device back to the RF receiver. | 08-20-2009 |
| 20100029230 | METHOD AND APPARATUS FOR RECEIVING A TRANSMISSION AT A RECEIVER - An embodiment of the invention may include a method of receiving a transmission at a receiver. The method may include setting a receive window duration for receiving the transmission based on an elapsed time since last receiving a good transmission. The receive window duration may be a nonlinear function of the elapsed time. The method may further include opening a receive window to listen for the transmission for an amount of time equal to the set receive window duration. | 02-04-2010 |
| 20100041356 | True Root-Mean-Square Detection with a Sub-Threshold Transistor Bridge Circuit - A sub-threshold transistor bridge circuit for use in detecting the signal level of an input radio-frequency signal is disclosed. In an exemplary embodiment each branch of the sub-threshold transistor bridge circuit comprises a transistor configured to operate in the sub-threshold region over a predetermined range of input signal levels. An input radio-frequency signal applied to a first pair of opposing corners of the bridge circuit yields a bridge output signal at the remaining pair of opposing corners that has a low-frequency component substantially proportional to the squared-amplitude of the envelope of the input radio-frequency signal. Also disclosed are various detector circuits including a sub-threshold transistor bridge circuit, as well as methods for detecting a signal level for an radio-frequency signal using a sub-threshold transistor bridge. | 02-18-2010 |
| 20100048152 | MIXER CIRCUIT AND METHOD OF OPERATION - A mixer circuit to mix a RF (Radio Frequency) signal with a LO (Local Oscillator) signal to generate an IF (Intermediate Frequency) signal including a dummy branch connected in parallel of a mixing branch, the dummy branch including a transconductance stage having an input connected to a reference potential independent from the RF signal, to transform the reference potential into a current signal, and a current switching core to switch the current signal according to LO and signals, and chopping switches to connect in series the transconductance stage of the mixing branch to the current switching core of the mixing branch and, in the alternative, to the current switching core of the dummy branch under the control of a chopping signal. | 02-25-2010 |
| 20100304696 | TRANSMITTING AND RECEIVING SYSTEM, TRANSMITTING APPARATUS AND RECEIVING APPARATUS - A transmission and reception system includes a transmission apparatus and reception apparatuses. The transmission apparatus transmits a storage identifier for identifying a storage medium and data. The reception apparatuses each include a receiving section for receiving the storage identifier for identifying the storage medium and the data, and a storage control section for storing the data received by the receiving section on the storage medium identified by the storage identifier received by the receiving section. Hence, automatic storage of data conforming to personal taste and simultaneous automatic storage of data for plural persons are realized. | 12-02-2010 |
| 20110039506 | Adaptive Encoding and Compression of Audio Broadcast Data - Various techniques for adaptively encoding and compressing audio broadcast data to create a digital representation of the broadcast for storage on an electronic device are provided. In one embodiment, the audio broadcast data may be encoded and stored onto the electronic device using a particular codec and/or compression rate, the selection of which may be based upon one or more characteristics of the audio broadcast data signal, such as a genre parameter or a quality parameter. Particularly, the audio broadcast data may be encoded using either a music codec or a speech codec depending upon the genre parameter. Further, some embodiments may also provide for an adjustable compression bit-rate based at least partially upon the quality parameter of the audio broadcast. | 02-17-2011 |
| 20110189967 | METHOD AND SYSTEM FOR COMMUNICATING DATA WITH AN INACCESSIBLE ELECTRONIC DEVICE - The invention relates to a method of communicating data with an electronic device, comprising the step of receiving signals conveyed by an electrical lead. The method is distinguished in that it comprises the following steps: fitting an RF radiofrequency interface with electrical contacts in the device, extracting signals from the electrical lead, and injecting signals resulting from the extracted signals, in the form of frames of radiofrequency signals in the RF interface with electrical contacts. The invention also relates to a radiofrequency communication device, a system comprising the device and a machine using the device. | 08-04-2011 |
| 20110217941 | AMPLIFIER AND COMMUNICATION APPARATUS - An amplifier includes first and second amplifier circuits. The first amplifier circuit amplifies positive-phase input signal to obtain a first positive-phase signal and amplifies negative-phase input signal to obtain a first negative-phase signal. The second amplifier circuit includes first and second amplifier units. The first amplifier unit amplifies positive-phase input signal to obtain a second positive-phase signal and amplifies negative-phase input signal to obtain a second negative-phase signal. The second amplifier unit amplifies positive-phase input signal to obtain a third positive-phase signal and amplifies negative-phase input signal to obtain a third negative-phase signal. The positive-phase output signal is sum of first and second positive-phase signals while the negative-phase output signal is sum of first and second negative-phase signals. Or the positive-phase output signal is sum of first positive-phase signal and third negative-phase signal while the negative-phase output signal is sum of first negative-phase signal and third positive-phase signal. | 09-08-2011 |
| 20110237211 | Reconfigurable Diversity Receiver - A method may include reconfigurably enabling one of a first downconverter and a second converter and disabling the other the second downconverter, wherein the first downconverter and the second downconverter are integral to a receiver unit of as wireless communications terminal. The method may also include frequency downconverting received wireless communication signals by the enabled downconverter. The method may also include processing the downconverted wireless communication signals by a primary path if the first downconverter is enabled, and processing the downconverted wireless communication signals by a diversity path if the second downconverter is enabled. | 09-29-2011 |
| 20110256840 | SYNCHRONIZATION DEVICE, RECEPTION DEVICE, SYNCHRONIZATION METHOD, AND RECEPTION METHOD - A synchronization device including a plurality of counter sections each outputting a numerical signal indicating a counted number by detecting a clock, the synchronization device includes: a first counter section which outputs the numerical signal; a counter synchronization signal output section which outputs a counter synchronization signal indicating the same number as the number indicated by the numerical signal output by the first counter section; and a second counter section which outputs a numerical signal indicating the same number at the same timing as that of the first counter section based on the number indicated by the counter synchronization signal output by the counter synchronization signal output section. | 10-20-2011 |
| 20110275337 | DIVERSITY RECEIVER AND METHOD FOR CONTROLLING DIVERSITY RECEIVING OPERATION - Power consumption is reduced in a diversity receiver. A diversity receiver ( | 11-10-2011 |
| 20110300819 | Receiver and a Method for Mobile Communications - In a method and a mobile communications receiver for processing signals from a first cell and a second cell a timing of the signal from the first cell and the second cell is obtained. A timing difference (δ) between the timings of signals from the first and the second cell is determined and based on that a timing (κ) for a window for discrete Fourier transform, DFT, processing is adjusted. DFT processing of the signals using the timing (κ) of the DFT window is then performed. | 12-08-2011 |
| 20120028592 | SHARED SOFT METRIC BUFFER FOR CARRIER AGGREGATION RECEIVERS - A method in a receiver includes receiving from a transmitter an aggregated-spectrum signal including at least first and second component carriers in respective spectral bands. Information related to processing one or more of the component carriers is buffered in at least one shared buffer, such that storage locations in the shared buffer are selectably assignable for storing at least first information related to the processing of the first component carrier and second information related to the processing of the second component carrier. The one or more of the component carriers are processed in the receiver using the information buffered in the shared buffer. | 02-02-2012 |
| 20120071122 | A/D CONVERSION CIRCUIT AND RECEIVER - The A/D conversion circuit according to one aspect of the present invention includes: a first sampling capacitor; a first sampling switch; a buffer circuit; a second sampling capacitor; a second sampling switch; a first converter; a first reset switch; and a second reset switch. The first and second sampling switches are turned on to track voltage to the first sampling capacitor and to sample buffer voltage to the second sampling capacitor through the buffer circuit. The first sampling switch is turned off to hold voltage. The second sampling switch is turned off so that the first converter reads the voltage from the second sampling capacitor to perform A/D conversion thereon. After that, the first and second reset switches reset the first and second sampling capacitors. | 03-22-2012 |
| 20120083230 | SIGNAL ACQUISITION APPARATUS AND METHOD FOR DISTRIBUTED COMPRESSIVE SENSING AND JOINT SIGNAL RECOVERY - Disclosed is a multiple sensor system including a plurality of different sensor devices to acquire respective signals sensed from a single signal source, and a signal acquisition apparatus to recover an original signal generated from the signal source. The signal acquisition apparatus recovers the original signal by applying joint recovery, based on characteristics and correlations between the respective sensor devices, to compressive sensing signals independently compressively sensed and transmitted from the respective sensor devices. At this time, a sensing matrix F prearranged with the respective sensor devices and channel information C between the original signal and each sensor device are used for joint recovery. | 04-05-2012 |
| 20120142293 | MOBILE RADIO COMMUNICATION DEVICES AND METHODS FOR CONTROLLING A MOBILE RADIO COMMUNICATION DEVICE - In an embodiment, a mobile radio communication device is provided. The mobile radio communication device may include a receiver configured to receive radio pilot information via a predefined physical radio channel according to a radio communication technology family, wherein the radio pilot information includes availability information about the availability of at least one radio communication technology of at least one other radio communication technology family. The mobile radio communication device may further include a radio communication protocol controller configured to provide at least one radio communication protocol of the at least one radio communication technology of the at least one other radio communication technology family based on the received pilot information. | 06-07-2012 |
| 20130023222 | FORWARD FILTER TRAINING SCHEME - A method includes receiving an input signal carrying transmitted values by a receiver, which includes a decision device that produces estimates of the transmitted values. The input signal is filtered using a forward filter to produce a forward-filtered signal, and the estimates of the transmitted values are filtered using a backward filter to produce a backward-filtered signal. The decision device is applied to a composite signal produced from the forward-filtered and backward-filtered signals, so as to produce the estimates of the transmitted values. An accuracy of the estimates of the transmitted values is assessed, and coefficients of the forward filter are adapted depending on the assessed accuracy. | 01-24-2013 |
| 20130102264 | SEMICONDUCTOR DEVICE AND ADJUSTMENT METHOD THEREFOR - Provided is a semiconductor device that is capable of performing background calibration during a reception operation without adversely affecting reception characteristics. During a reception operation, the semiconductor device detects a timing at which an invalid received signal occurs upon a gain change or a reception channel change and performs background calibration at the detected timing. In this instance, as the received signal is invalid, performing the calibration does not further decrease the substantial accuracy of reception. Moreover, an unnecessary signal component, which would arise when the background calibration is performed at fixed intervals, will not be generated as far as the background calibration is performed at random timing. | 04-25-2013 |
| 20130109335 | Cam profile in the periphery of a rotating wheel transmitting power via a compresible rope or cable | 05-02-2013 |
| 20130157599 | Method and Apparatus for Detecting and Classifying Signals - A method and apparatus for detecting signals. According to an embodiment, energy waves are received at a first receiver system and a second receiver system. The first receiver system generates first information using the energy waves received at the first receiver system. The first receiver system receives second information generated using the energy waves received at the second receiver system from the second receiver system. The first receiver system identifies desired information about a repetitive portion of a signal carried in the energy waves received at the first receiver system using the first information and the second information. | 06-20-2013 |
| 20130178179 | SUBSAMPLING RECEIVER USING INTERSTAGE OFF-CHIP RF BAND PASS FILTER - The inventive concept relates to a wireless communication receiver. The wireless communication receiver includes a second off-chip RF filter, an RF-to-digital converter and a digital pre-processor processing a signal converted into a digital. The RF-to-digital converter converts an RF signal being received into a digital signal of DC frequency band or intermediate frequency band and has a dynamic range that can process a wanted RF band signal and unwanted signals near to the wanted RF band signal. The digital pre-processor digitally controls a signal gain to transmit it to a modulator/demodulator. | 07-11-2013 |
| 20130217350 | SYSTEM AND METHOD FOR COMMUNICATING PRESENCE STATUS - A method and system are provided for computing a physiological presence of a user of a device. The method comprises obtaining a physiological measurement of the user of the device and computing a presence status based on physiological measurements. | 08-22-2013 |
| 20140315506 | DETERMINING RADAR SUB-CHANNEL IN COMMUNICATION NETWORKS - A wireless device operating within a wireless communication channel can detect radar signals in one or more sub-channels using sub-channel counter information. The wireless device can receive signal pulses and generate Fast Fourier Transform values based on the signal pulses. The sub-channel counters can be incremented based on the Fast Fourier Transform values. The wireless device can determine whether the received signal pulses include a radar signal based, at least in part, on the values of the sub-channel counters. | 10-23-2014 |
| 20160142990 | RADIO COMMUNICATION DEVICE AND TIMING CONTROL METHOD - A radio communication device includes: a receiver configured to receive first and second compressed data strings obtained by compressing, in a control device, a first data string as an object of radio transmission via a first antenna and a second data string as an object of radio transmission via a second antenna different from the first antenna; and a processor configured to process the first and second compressed data strings, wherein the processor: decompresses the first and second compressed data strings and restores the first and second data strings; measures a first decompression time taken for decompressing the first compressed data string and a second decompression time taken for decompressing the second compressed data string; and synchronizes radio transmission timings of restored first and second data strings based on a difference between the first decompression time and the second decompression time. | 05-19-2016 |
| 20160381669 | VERSATILE RADIO RECEIVER ARCHITECTURE - The invention concerns an RF receiver comprising: a down-converting and sampling circuit ( | 12-29-2016 |
| 20190149374 | DIRECT CONVERSION RECEIVER | 05-16-2019 |
