| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455142000 | Convertible to different type (e.g., AM to FM) | 20 |
| 20080207152 | Dual-mode system and method for receiving wireless signals - A wireless receiver ( | 08-28-2008 |
| 20080287081 | Receiver for Receiving Multiple Standards - A receiver is arranged to receive at least two RF signals ( | 11-20-2008 |
| 20090124222 | Radio Receiver - Reducing the cost and size of an FM radio receiver for receiving the North American weather band is aimed. An intermediate-frequency bandpass filter (IFBPF ( | 05-14-2009 |
| 20090156144 | Electric device - An electric device for receiving a radio frequency (RF) signal is provided. The electric device includes an antenna, a first power amplifier, a battery, a second filter and a second power amplifier. The antenna is used for receiving and outputting a RF signal. The first power amplifier is used for receiving the RF signal, amplifying the RF signal and outputting the RF enhanced by the first power amplifier and a feedback signal. The battery is used for providing a working voltage to the first power amplifier, and receiving and outputting the feedback signal. The second filter is used for receiving the working voltage provided by the battery and the feedback signal, filtering the feedback signal and outputting the working voltage. The second power amplifier is used for receiving the working voltage. | 06-18-2009 |
| 20090209217 | Electronic Device, System, Chip and Method Enabling a Radio Signal Reception - The invention relates to an electronic device comprising a headset connector adapted to connect a headset to the electronic device and an active amplifier circuit connected to the headset connector. The active amplifier circuit is adapted to amplify radio signals received by an antenna, which is connected to the electronic device via the headset connector. The invention relates equally to a chip comprising such an active amplifier circuit, to a system comprising the electronic device and to a corresponding method for receiving radio signals at such an electronic device. | 08-20-2009 |
| 20090247096 | Method And System For Integrated FM Recording - Aspects of a method and system for integrated FM recording are provided. A multimedia device with various integrated systems such as an integrated FM radio may provide content-based multimedia content recording, recorded content retrieval, and playback of desired or potentially relevant contents. The multimedia device may receive multimedia content along with information identifying the received multimedia content via the various integrated systems. A segment of the received multimedia content may be recorded selectively by comparing the corresponding content information with a favorite content list. The favorite content list may be generated and updated based on the multimedia content and/or program selection data. The multimedia device may have access to additional related stored multimedia contents to retrieve and render the stored segment of the received multimedia content. Device power consumption may be reduced by utilizing the local stored contents without access to the integrated systems' archives of broadcast program contents. | 10-01-2009 |
| 20090325520 | MULTIBAND RF RECEIVER AND METHOD FOR RECEIVING MULTIBAND RF SIGNAL - A multiband receiver is disclosed for receiving a multiband RF signal having first and second RF bands. The first RF band contains a first service RF range, and the second RF band contains a second service RF range. The receiver includes a mixer for converting the RF signal into an IF signal, using a single local oscillator frequency âf,â and an IF bandpass filter for canceling out some of frequencies of the IF signal outside of a predetermined passband. The local oscillator frequency âfâ is determined to allow the first and second service IF ranges to lie outside of the predetermined passband, and to allow a frequency portion of the first IF band exclusive of the first service IF range and a frequency portion of the second IF band exclusive of the second service IF range to lie within the predetermined passband. | 12-31-2009 |
| 20100197252 | FM-AM DEMODULATOR AND CONTROL METHOD THEREFOR - A FM-AM demodulator includes a FM signal amplifier, a local oscillator, an image oscillator, a first selector, a first orthogonal mixer, an AM signal amplifier, a first frequency divider, a second frequency divider, a second selector, a second orthogonal mixer, a third selector, a first filter, a first amplifier, a fourth selector, a second filter, a second amplifier, a first gain controller, an I/Q compensation unit, an IF oscillator, a third orthogonal mixer, an adder, a channel filter configured to extract a signal with a predetermined frequency band output from the adder, a third amplifier, a second gain controller, a demodulator, and an I/Q compensation controller configured to generate an I/Q compensation signal to use for adjusting phase and gain of the I signal used in an I/Q compensation unit by detecting amplitude of the output signal from the demodulator, and output the generated signal to the I/Q compensation unit. | 08-05-2010 |
| 20100216416 | Digital Data Processing Circuit - A digital data processing circuit comprising: a setting unit configured to set setting data on an audio signal processing circuit configured to generate an FM modulated signal based on the setting data, the FM modulated signal being a signal to be transmitted wirelessly to an FM radio receiver; and an output unit configured to output audio data for reproducing a predetermined audio signal while the setting unit sets the setting data on the audio signal processing circuit. | 08-26-2010 |
| 20100273440 | PORTABLE ELECTRONIC DEVICE HAVING FREQUENCY MODULATION AND MULTIMEDIA BROADCASTING FEATURES - A portable electronic device includes a control unit, an antenna, a switching unit, a multimedia broadcasting unit, a FM unit, and a speaker. The control unit and the antenna are electrically connected to the switching unit. The switching unit is electrically connected to the speaker via the multimedia broadcasting unit and the FM unit. The antenna receives multimedia broadcasting signals and FM signals. The control unit controls the switching unit switch between the multimedia broadcasting unit and the FM unit to receive corresponding signals from the antenna. The speaker outputs the signals from the multimedia broadcasting unit and the FM unit. | 10-28-2010 |
| 20110009080 | RECEIVER ARCHITECTURE WITH DIGITALLY GENERATED INTERMEDIATE FREQUENCY - A receiver can be configured to include an RF front end that is configured to downconvert a received signal to a baseband signal or a low Intermediate Frequency (IF) signal. The receiver can downconvert the desired signal from an RF frequency in the presence of numerous interference sources to a baseband or low IF signal for filtering and channel selection. The filtered baseband or low IF signal can be converted to a digital representation. The digital representation of the signal can be upconverted in the digital domain to a programmable IF frequency. The digital IF signal can be converted to an analog IF signal that can be processed by legacy hardware. | 01-13-2011 |
| 20120077451 | LOCAL RADIO MODE FOR AM/FM BROADCASTS - A vehicle radio includes a memory including normal mode memory locations and local mode memory locations. User preset buttons are each associated with a normal mode memory location, and local preset buttons are each associated with a local mode memory location. A radio controller selectively operates in local mode, wherein the radio controller scans frequencies being received and stores some of the received frequencies as local mode frequencies in the local mode memory locations of the preset memory. In local mode, the controller enables both: selection of any one of the user presets; and selection of any one of the local presets. Optionally, the local memory locations can first be filled by PTY preference, with unfilled locations filled by closest PTY or signal strength. A frequency stored in a local mode memory location can be copied to a normal mode memory location. | 03-29-2012 |
| 20140220917 | MULTIMODE RAKE RECEIVER, CELLULAR BASE STATION AND CELLULAR COMMUNICATION DEVICE - A multimode rake receiver comprise a common antenna interface, arranged to at least receive in a first mode a first CDMA radio channel carrying information encoded according to a first baseband modulation standard and to receive in a second mode a second CDMA radio channel carrying information encoded according to a second baseband modulation standard; and a common signal processing path, at least arranged to process in the first mode the first CDMA radio channel and in the second mode the second CDMA radio channel, wherein the common signal path comprises a common descrambling and de-spreading unit and a common hybrid code generating unit arranged to provide to the common descrambling and de-spreading unit chip codes applicable in the first mode to the first CDMA radio channel and in the second mode to the second CDMA radio channel. | 08-07-2014 |
| 20140273898 | Frequency Selective Logarithmic Amplifier With Intrinsic Frequency Demodulation Capability - A regenerative selective logarithmic detector amplifier (LDA) can have integrated FM demodulation capabilities. It can receive a wired or wireless FM modulated signal and amplify or demodulate it with high sensitivity, high skirt ratio and minimized noise when compared to the prior art. When used in conjunction with other circuits such as a PLL or mixer, it can improve interference rejection and frequency selectivity and be locked on a precise channel in frequency and phase. The LDA produces intermittent oscillations that are self-quenched when reaching a given threshold. It also embeds the circuitry to perform direct FM discrimination. FM demodulation process is completed by a simple analog or digital frequency to voltage converter. This plus the fact that the instantaneous regeneration gain is low-medium permit to detect signals of small amplitudes buried in the noise. | 09-18-2014 |
| 20150326330 | AM/FM ANTENNA PERFORMANCE IN THE PRESENCE OF WIDE-BAND NOISE USING TUNABLE HIGH-Q STRUCTURES - An AM/FM radio system for a vehicle that is selectively impedance matched to the particular tuned frequency of interest so that noise received by other frequencies does not affect the received signal. The radio system includes an HMI allowing a user to select an AM or FM radio station and a radio tuner responsive to a signal from the HMI identifying the selected radio station. The tuner tunes the radio system to the radio station, and provides a signal to the HMI identifying the radio station. The HMI places a message on a vehicle bus identifying the radio station that the radio tuner is tuned to. An antenna controller receives the message from the vehicle bus to selectively control an impedance matrix to provide impedance matching for the selected radio station frequency. The antenna controller also selectively tunes antenna radiating elements to the particular tuned frequency. | 11-12-2015 |
| 455143000 | With distinct signal path for each type | 4 |
| 20090124223 | SELECTABLE LOW NOISE AMPLIFIER FOR WIRELESS COMMUNICATION - A low-noise amplifier in a receiver has a differential mode of operation and at least one single-ended mode of operation. A control signal is used to select between or among the modes and the switching between differential and single-ended operations may be performed on the fly. | 05-14-2009 |
| 20090247097 | Receiver Module with Dual Mode Capability - The present invention supports the remote control of a controlled device. A hybrid device receives a control signal over an infrared communications channel or a wireless networking channel. The hybrid device can replace an IR receiver module in the controlled device in order to provide backward compatibility as well as provide universal operation with a wireless networking controller. The hybrid device processes a signal received over one of the communications channels. When a signal is received over the infrared communications channel, the processor converts the signal to an output code that is sent to a device controller. When a signal is received over the wireless networking communications channel, the processor converts the signal to a wireless command, converts the wireless command to an output code, and sends the output code to the device controller. All output codes are transparent for the two communications channels. | 10-01-2009 |
| 20100124891 | FM TRANSMITTER AND NON-FM RECEIVER INTEGRATED ON SINGLE CHIP - Exemplary embodiments include a frequency modulation (FM) transmitter and a non-FM receiver, which may be implemented on the same IC chip. The FM transmitter may include a digital FM modulator, a lowpass filter, an amplifier, and an LC tank circuit. The digital FM modulator may receive a digital input signal, perform FM modulation with the digital input signal, and provide a digital FM signal. The lowpass filter may filter the digital FM signal and provide a filtered FM signal. The amplifier may amplify the filtered FM signal and provide an output FM signal. The LC tank circuit may filter the output FM signal. The digital FM modulator may perform FM modulation by changing a variable divider ratio of a multi-modulus divider within a PLL. A delta-sigma modulator may receive the digital input signal and generate a modulator output signal used to obtain the variable divider ratio. | 05-20-2010 |
| 20100136936 | AUTOMOBILE TOP ANTENNA DEVICES AND ANTENNA AMPLIFIERS THEREOF - Antenna amplifiers and automobile top antenna devices are provided. The antenna amplifier includes an AM frequency selection circuit, an AM signal amplification circuit, an FM frequency selection circuit, an FM signal amplification circuit, and a power circuit. The antenna amplifier is further provided with a trap circuit that has an end connected to the ground terminal of the antenna amplifier, and another end connected to a metal mounting base for an antenna on the automobile top. The antenna device includes a shark-fin antenna case, a metal mounting base, an antenna support and a radio receiving antenna. The antenna case is mounted on the metal mounting base to form an internal accommodation space in which the antenna support, the radio receiving antenna and a circuit board with an antenna amplifier are provided. | 06-03-2010 |
| 455144000 | With dual purpose amplifying or other stage | 1 |
| 20100279636 | Frequency- and Phase-Modulation Telecontrol Receiver for Geostationary Satellite - The subject of the present invention is a frequency and phase modulation remote control receiver for a geostationary satellite which is lighter and less expensive than the customary receivers, while not degrading the passband of the telecommunication equipment for its payload, and it is characterized in that it comprises a heterodyne amplifier analog input and filtering circuit ( | 11-04-2010 |
