| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455180100 | Combined with band selection | 10 |
| 20080227418 | RF radio and method for monitoring multiple channels to acquire warning alert data - An RF radio and a method of monitoring warning alert data is provided. The RF radio includes a radio receiver for receiving broadcast radio wave signals, and a tuner adjustable for selecting radio wave signal channels within AM and FM radio bands and radio wave signal channels within a weather band. The weather band is adapted to provide warning alert data. The radio also includes a controller for controlling the tuner to select a radio wave signal channel within the AM or FM radio band. The controller controls the tuner to periodically switch to the weather band to simultaneously monitor a plurality of weather band channels during an alternate frequency update, and determines presence of warning alert data. The controller further initiates receipt of the warning alert data when such warning alert data is determined to be present. | 09-18-2008 |
| 20090215415 | SWITCH-ABLE BAND-TRACKING INPUT FILTER FOR COMBINATION TUNER - The present invention relates to a combination RF tuner capable of receiving signals from the FM radio band and from the TV band. Prior art combination tuners had to compromise in quality resulting in combination tuners that neither exhibited high-end FMnor TV-signal reception behavior. A combination RF tuner capable of optimal receiving an FM-radio signal type and a TV signal type, comprising a switch-able tuned input filter ( | 08-27-2009 |
| 20100120386 | Multi-Channel Receiver Architecture and Reception Method - A multi-channel receiver comprising an ADC and a multi-band, multi-channel selector. The ADC converts a broad-band multi-channel signal into a digital signal. The digital signal is then broken into sub-bands each containing a plurality of channels. A channel selector selects desired channels from the appropriate sub-band. The multi-channel receiver may deliver simultaneous channels equal to the number of channel selectors that have been implemented. The multi-channel receiver may be implemented on a single integrated circuit. | 05-13-2010 |
| 20100120387 | CHANNEL-SELECT DECIMATION FILTER WITH PROGRAMMABLE BANDWIDTH - A channel-select decimation filter capable of operating in multiple bandwidth modes includes a first low pass filter stage, a variable gain stage, a subtraction module a second low pass filter stage and a down-sampling module. The first low pass filter stage includes a first programmable delay module for filtering input signals to produce first low pass filtered signals. The variable gain stage applies a programmable gain to the input signals to produce gained input signals. The subtraction module subtracts the first low pass filtered signals from the gain input signals to produce first stage signals. The second low pass filter stage includes a second programmable delay module for filtering the first stage signals to produce channel-selected signals. The first programmable delay module, second programmable delay module and programmable gain are programmed to implement one of the multiple bandwidth modes. | 05-13-2010 |
| 20100330941 | FM TRANSMITTER WITH A DELTA-SIGMA MODULATOR AND A PHASE-LOCKED LOOP - A frequency modulation (FM) transmitter implemented with a delta-sigma modulator and a phase-locked loop (PLL) is described. The delta-sigma modulator receives a modulating signal (e.g., an FM stereo multiplex (MPX) signal) and provides a modulator output signal. The PLL performs frequency modulation based on the modulator output signal and provides an FM signal. The FM transmitter may further include a gain/phase compensation unit and a scaling unit. The compensation unit may compensate the modulating signal for the closed-loop response of the PLL. The scaling unit may scale the amplitude of the modulating signal based on a gain to obtain a target frequency deviation for the FM signal. The PLL may operate in a transmit mode or a receive mode, may perform frequency modulation in the transmit mode, and may provide a local oscillator (LO) signal at a fixed frequency in the receive mode. | 12-30-2010 |
| 20140273899 | COMMUNICATION DEVICE - An RFID device provided at a transmission and reception circuit processes an RFID carrier signal belonging to a band of about 902 MHz to about 928 MHz or about 865 MHz to about 868 MHz to execute near field radio communication. An RFIC provided at a transmission and reception circuit processes a GSM carrier signal belonging to a band of about 824 MHz to about 894 MHz or about 880 MHz to about 960 MHz to execute mobile communication. A filter circuit provided at the transmission and reception circuit takes the band of about 850 MHz to about 940 MHz where RFID carrier signals appear as the pass band, and takes the band greater than or equal to about 1.2 GHz where a harmonic wave component of GSM carrier signals appears as the attenuation band. | 09-18-2014 |
| 20150147991 | LOW-COST RECEIVER USING INTEGRATED INDUCTORS - A receiver includes a first amplifier having an input for receiving an RF signal, and an output for providing an amplified RF signal, a switch section that selectively switches the amplified RF signal onto a selected one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal. The first variable capacitor has a capacitance that varies in response to a tuning signal. The inductance leg includes a first inductor in series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter. | 05-28-2015 |
| 20160056851 | DATA PROCESSING DEVICE - One example discloses a data processing device, comprising: a local oscillator (LO) having an LO frequency output, an LO performance parameter output, and an LO frequency select input; and a degradation detection module, coupled to the LO performance parameter output and to the LO frequency select input, and including an LO frequency select module triggered by the LO performance parameter output. Another example discloses an article of manufacture comprises at least one non-transitory, tangible machine readable storage medium containing executable machine instructions for controlling a data processing device which comprise: monitoring a set of local oscillator (LO) performance parameters; setting an LO degraded state when at least one of the LO performance parameters is not within a predetermined range; and adjusting an LO frequency in response to the LO degraded state. | 02-25-2016 |
| 455180200 | UHF and VHF | 2 |
| 20080214131 | User Interface to be Implemented in a Device for Organazing Broadcast Stations and Optically Their Content - This invention relates to a user interface to be implemented in a device, wherein the device comprises a tuner and a receiver for receiving broadcast signals from broadcast stations. The user interface uses semantic information associated with the received broadcast signals for sorting the received broadcast stations based on sorting criteria and displays the sorted broadcast stations on a display. | 09-04-2008 |
| 20160056845 | LOW-COST RECEIVER USING INTEGRATED INDUCTORS - A receiver includes a first amplifier having an input for receiving a radio frequency (RF) signal, and an output for providing an amplified RF signal, a switch section for selectively switching the RF signal onto one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal, wherein the first variable capacitor has a capacitance that varies in response to a tuning signal, and the inductance leg comprises a first inductorin series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter. | 02-25-2016 |
