Class / Patent application number | Description | Number of patent applications / Date published |
455200100 | With other control (e.g., volume, gain, bandwidth, etc.) | 16 |
20080207153 | Tuner - Provided is a tuner, which comprises: an amplifier for amplifying received signals; a synchronization processor for mixing the received signals with oscillating frequency signals to output intermediate frequency signals of a selected channel; an intermediate frequency signal processor for filtering and amplifying the intermediate frequency signals; a demodulator for demodulating the amplified intermediate frequency signals and detecting intensity of the signals to output a gain control signal; and an attenuator for attenuating intensity of the received signals in response to the gain control signal. | 08-28-2008 |
20090023408 | ELECTRIC WAVE RECEIVING APPARATUS - An electric wave receiving apparatus comprises: an antenna; an amplifier; filter circuits that extract signals in different frequency bands from an output of the amplifier; detector circuits that demodulate time codes from outputs of the filter circuits; automatic gain control circuits that generate gain control signals from the detector circuits; a selector that selects one gain control signal indicating a maximum signal level among the gain control signals; and an arithmetic processing section to be able to analyze the time codes of outputs of the plurality of detector circuits, wherein the one gain control signal is supplied to the amplifier to control an amplification factor of the amplifier so that signal levels output from detector circuits do not become excessive, and the arithmetic processing section selects an output to enable the analysis of the time code among the outputs of detector circuits to perform the analysis of the time code. | 01-22-2009 |
20090156145 | SYSTEMS AND METHOD FOR A HIGHLY INTEGRATED MULTI-MODE TUNER - A method for adjusting the signal to noise ratio of a receiver comprises measuring the peak power for an RF signal and determining, based on the measured peak power, whether the RF signal power is within a desired operating range. The method further includes adjusting an RF attenuation for the receiver, when it is determined that the RF signal power is not within the desired operating range. The method further comprises measuring a peak power for an IF signal, determining based on the measured peak power, whether the IF signal power is within a desired operating range, and adjusting an IF attenuation for the receiver, when it is determined that the IF signal peak power is not within the desired operating range. | 06-18-2009 |
20090258620 | Terminal and Operating Method Thereof - A terminal is provided. The terminal comprises a tuner converting a received high-frequency signal, a VSB (vestigial side band) demodulator demodulating the output signal of the tuner into a VSB signal, a DMB (digital multimedia broadcasting) demodulator demodulating the output signal of the tuner into a DMB signal, a decoder decoding the demodulated VSB signal or the demodulated DMB signal into an image signal, and a controller controlling at least one of the tuner, the VSB demodulator, the DMB demodulator, and the decoder. | 10-15-2009 |
20100056090 | Simplified High Frequency Tuner and Tuning Method - A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the channel spacing or one-half of a channel spacing displaced from an integer multiple of the channel spacing. The local oscillator signal is selected to frequency translate the signal of interest to within a near-baseband passband whose lower edge is spaced from DC by at least about the maximum bandwidth of the signal of interest. Problems associated with 1/f noise, DC offsets, and self-mixing products are avoided or substantially diminished. Other methods and systems are also disclosed. | 03-04-2010 |
20100069029 | METHOD AND APPARATUS TO ADJUST A TUNABLE REACTIVE ELEMENT - A system that incorporates teachings of the present disclosure may include, for example, a method involving a step to tune a plurality of tunable reactive elements by measuring a drift in reactance of at least one of the plurality of tunable reactive elements away from a desired reactance. Additional embodiments are disclosed. | 03-18-2010 |
20120129478 | FEEDFORWARD AUTOMATIC GAIN CORRECTION - An automatic gain control circuit is provided for an input signal in the form of a dc reference level and a superposed amplitude modulated ac data signal. A feedforward AGC loop has a low pass filter for deriving the level of attenuation from the attenuated dc reference level. A multiplier value (G) is based on the reciprocal of the level of attenuation (α) and this multiplier enables an output signal to be generated comprising a constant multiple (DG) of the input signal. | 05-24-2012 |
20120142294 | FINE GAIN TUNING - A circuit tuneable between first and second frequencies comprising gain control circuitry operable to control the gain of the circuit between the first and second frequencies, the gain control circuitry comprising a resistor network having: at least two resistor lines arranged in parallel, each resistor line comprising one or more resistors; and for each resistor line, a switch operable to select or deselect the corresponding resistor line; the resistor lines and switches being arranged such that the net resistance of the resistor network is the parallel sum of each of the selected resistor lines; and logic circuitry configured to control said switches so as to minimise the variation in gain of the circuit between the first and second frequencies. | 06-07-2012 |
20120252389 | EFFICIENT SCHEME FOR AUTOMATIC GAIN CONTROL IN COMMUNICATION SYSTEMS - A system for controlling an RF gain of a receiver that reduces a time taken to maintain an input signal level at an optimum dynamic range is provided. The system includes a tuner that receives a radio frequency (RF) signal and down-converts the RF signal to an intermediate frequency (IF) signal, and a demodulator. The tuner includes a radio frequency programmable gain amplifier (RF_VGA), a filter and an IF programmable gain amplifier (IF_VGA). The demodulator includes an analog to digital converter (ADC), and an Automatic Gain Control (AGC) unit that (i) receives a digital signal and an IF gain of the IF_VGA. The ADC samples a filtered IF signal under oversampling conditions to obtain an oversampled signal that includes an in-band signal and an out-of-band signal. The AGC unit (ii) controls the RF_VGA, the IF_VGA and (iii) measures an RF energy of the RF signal. | 10-04-2012 |
20130102265 | SETTING TELEVISION OR RADIO DEFAULT CHANNEL - In some embodiments, a media device is configured so that it automatically causes a first predetermined channel to be displayed on an output device when a user sends a request signal to the media device to turn the output device off. The media device may be configured so that it causes the output device to shut off after the first predetermined channel has been on for a dwell period of time after the request signal has been received. The dwell period of time may be approximately two seconds. In some embodiments, a media device is configured so that it automatically causes a first predetermined channel to be displayed on an output device when a user sends a request signal to the media device to turn the output device on. In some embodiments, the media device is a television device. In other embodiments, the media device is a radio device. | 04-25-2013 |
20130122839 | THERMALLY COMPENSATED CATV GAIN CONTROL APPARATUS AND FIRMWARE - A compact automatic gain control module for an RF amplifier includes a microchip Tuner for detection of pilot signals in an incoming RF signal. By selectively tuning into pilot signals in response to command from an on-board microprocessor, the module is frequency agile in the selection of pilot signals, selecting specifically advantageous signals for use as a pilot. Use of a microprocessor also enables specific advantages in receiving firmware upgrades to incorporate algorithms for operation parameter monitoring and adjustment of response in accord with monitored parameters. Such monitoring also enables the recording of on-module events that enable storage of a log to enable maintenance and performance enhancement within the module. | 05-16-2013 |
20130165065 | METHOD AND APPARATUS FOR DYNAMICALLY ADAPTING FM TUNER SENSITIVITY TO A LOCAL ENVIRONMENT FOR A SINGLE-TUNER SYSTEM - A method of operating a single-tuner radio includes tuning into a first frequency. A pause in a first signal associated with the first frequency is detected. Tuning is switched from the first frequency to a second frequency. A signal quality metric for the second frequency is measured. Tuning is switched from the second frequency to the first frequency. | 06-27-2013 |
20130237167 | METHOD AND APPARATUS FOR DETERMINING AVAILABLE BANDWIDTH FOR WIRELESS COMMUNICATION - In one embodiment, the method includes determining if a next interval of a bandwidth is available if an interval of the bandwidth preceding the next interval was determined to be available such that the next interval is larger than the preceding interval. | 09-12-2013 |
20140171000 | SINGLE EXTERNAL ANTENNA FOR FM PHASE DIVERSITY FOR A VEHICLE RADIO UNIT - Systems, apparatuses and methods for providing FM phase diversity capabilities are provide. In some aspects, a vehicle system includes a first FM antenna positioned externally of a vehicle and adapted to receive a first FM signal, a radio unit positioned internally of the vehicle and including a display and at least one user control, a cable electrically coupled to the first FM antenna and the radio unit to communicate the first FM signal to the radio unit, and a second FM antenna positioned internally of the vehicle and adapted to receive a second FM signal that is communicated to the radio unit. In another aspect, a radio unit positioned internally of the vehicle may include a printed wire board and a second FM antenna may be positioned on the printed wire board internally of the vehicle and adapted to receive a second FM signal. | 06-19-2014 |
20150038096 | ELECTRONIC GAIN SHAPER AND A METHOD FOR STORING PARAMETERS - There is provided an electronic gain shaper for open loop adaptive optimising of broadband microwave circuits, the gain shaper comprising operating parameter selection means [ | 02-05-2015 |
20150126144 | METHOD AND APPARATUS FOR MODE BALANCE FOR ANALOG FM, DIGITAL RADIO BLEND LOGIC IN AN AUTOMOTIVE ENVIRONMENT - A radio includes a first tuner and a second tuner. A processor compares a first perceivable volume level of a station tuned by the first tuner to at least one second perceivable volume level of at least one background station tuned by the second tuner. The processor enables automatic volume knob changes using a pre-calibrated lookup table that associates a volume step of the volume knob with a difference between the first perceivable volume level and the second perceivable volume level. | 05-07-2015 |