Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7805120 | Noise blanker circuit and method for removing noise and correcting a signal A noise blanker circuit and method of removing impulse noise from a signal and correcting the signal is provided. The circuit includes a detection stage, a pulse removal stage, and a pulse removal correction stage. The detection stage includes at least an input that... | 09/28/2010 |
| 7676204 | Radio receiver having ignition noise detector and method therefor An AM receiver including an AM demodulator for demodulating an AM signal received by an antenna coupled to the AM demodulator is provided. The AM receiver further includes a bandpass filter for receiving the demodulated signal and generating a bandpass filtered sign... | 03/09/2010 |
| 7613438 | Method for reducing the effect of impulse noise in a motor vehicle radio Methods are provided for reducing impulse noise effects in a motor vehicle radio. One method includes the steps of first detecting impulse noise received by the motor vehicle radio. The received impulse noise is classified as either short pulse width impulse noise o... | 11/03/2009 |
| 7499686 | Method and apparatus for multi-sensory speech enhancement on a mobile device A mobile device is provided that includes a digit input that can be manipulated by a user's fingers or thumb, an air conduction microphone and an alternative sensor that provides an alternative sensor signal indicative of speech. Under some embodiments, the mobile d... | 03/03/2009 |
| 7440737 | Noise blanker control A noise blanker for use in a radio receiver includes an audio blanker (115) configured to mitigate impulse noise associated with a signal received by the radio receiver and a blanker controller (117) configured to selectively enable the audio blanker a... | 10/21/2008 |
| 7386327 | Apparatus and method for controlling noise in a mobile communication terminal An apparatus and method for controlling a volume of comfort noise in a mobile communication terminal. The mobile communication terminal includes a vocoder for detecting a decoding rate of voice data received after establishing a voice call to output a detection sign... | 06/10/2008 |
| 7366491 | Noise cancel circuit A raw signal is delayed in a delay circuit (1) and then supplied to one of the input terminals of a selection circuit (8). The raw signal is also supplied to another delay circuit (2) to be delayed. Subsequently, data of this delayed signal is p... | 04/29/2008 |
| 7366264 | Method and system for reducing noise in a multi-carrier signal A receiver 100 for receiving a multi-carrier signal comprises detection means for detecting 801 the presence of impulse interference within the signal and identifying one or more samples of the signal affected by the impulse interference, means for sel... | 04/29/2008 |
| 7353008 | Method and system for optimizing decibel data conversion A Method and System for Optimizing Decibel Data Conversion. This invention provides an ability to convert linear signals into decibel units via digital logic circuitry. The resultant system can present information to users in real-time. This is made possible by perf... | 04/01/2008 |
| 7348824 | Auto-zero circuit An auto-zero circuit is disclosed. The auto-zero circuit includes a first set of circuits for implementing a first auto-zero phase and a second set of circuits for implementing a second auto-zero phase. The first set of circuits includes a first differential amplifi... | 03/25/2008 |
| 7317906 | AM radio receiver An AM radio receiver comprises an RF amplifier, a first mixer that converts the RF signal to a first intermediate-frequency signal, a first bandpass filter that band-limits the first intermediate-frequency signal, a second mixer that converts the output from the fir... | 01/08/2008 |
| 7260163 | Noise blanker using an adaptive all-pole predictor and method therefor A noise blanker (40, 106) monitors and removes noise from a sampled signal by adaptive filtering (98, 150) the sampled signal to generate trained adaptive filter prediction coefficients. The sampled signal is provided as an output signal when the noise... | 08/21/2007 |
| 7253688 | Input matching circuit for multiband low noise amplifier Provided is a multiband low noise amplifier including a first transistor, an input matching circuit, and a first capacitor. The first transistor includes a collector electrically connected to a first power supply, a grounded emitter, and a base connected to the othe... | 08/07/2007 |
| 7239710 | Stereo radio receiver with noise suppression For the purpose of largely suppressing the noise pulses caused in a stereo radio receiver in the reception signal, particularly by the ignition system of a motor vehicle, a digital field strength signal representing the analog field strength signal is produced for e... | 07/03/2007 |
| 7230422 | Motor state counting Systems, methods, and computer-readable media are disclosed for error-compensated counting of Hall states for motor position feedback and/or commutation. An indicated Hall state is detected by digital Hall state sensors and a duration of the Hall state is compared t... | 06/12/2007 |
| 7184725 | Pole switch down converter with symmetric resonator A pole switch down-converter with symmetric resonator which reduce the non resonating phase to approximately half of the RF carrier period of the modulated signal is proposed. The down-converter comprises a first and second λ/2 resonator for collecting RF energy, w... | 02/27/2007 |
| 7180933 | Squelch circuitry for high speed high frequency operation A squelch circuit for operating at high speed and at high frequencies includes a squelch input unit, a low swing pre-amplifier and a sampling and decision circuit. The squelch input unit pre-processes the positive and negative signals of an input signal to generate ... | 02/20/2007 |
| 7057540 | Sigma-delta (ΣΔ) analog-to-digital converter (ADC) structure incorporating a direct sampling mixer A sigma-delta analog-to-digital converter-offers advantages such as noise shaping and high frequency operation. However, a sampling circuit needed to provide a highly oversampled discrete-time sample stream with low noise characteristics is difficult to design and i... | 06/06/2006 |
| 6993309 | Noise removal apparatus and an FM receiver A noise removal unit mounted on a car radio according to the invention removes multipath noise and pulse noise from FM demodulated signals. At this time, the noise removal unit removes all of the multipath noise. Also, in case where the generation density of noise i... | 01/31/2006 |
| 6961396 | Digital banking circuit A digital blanking circuit allows a first digital input signal transition to be passed on to a following stage, but prohibits the passing of subsequent transitions for a predetermined blanking interval. One embodiment of the present invention employs rising edge and... | 11/01/2005 |
| 6961548 | Method for masking interruptions on playback of received radio signals A method of masking interruptions in the playback of received radio signals is provided, in which lengthy interruptions are allowed only when modulation of the radio broadcast program currently being received is recognized as speech, and a modulation pause in the re... | 11/01/2005 |
| 6925114 | Weak signal processing based on impulse noise blanking An improved noise reduction system (20) is provided for a radio frequency audio processor having one or more weak signal processing components for generating one or more corresponding control values (36a, 36b) for controlling chara... | 08/02/2005 |
| 6799026 | Handset diversity in wireless communications system A diversity reception handset includes a receiver for receiving pilot and plural increments of traffic sent from a base station within a service area of a wireless communications network. The handset includes at least two antennas, a switch for switching a receiver ... | 09/28/2004 |
| 6795559 | Impulse noise reducer detecting impulse noise from an audio signal An impulse noise reducer detects impulse noise in an audio signal by detecting and smoothing the high-frequency amplitude of the audio signal, attenuating the non-smoothed amplitude according to the smoothed amplitude, and comparing the attenuated amplitude with a t... | 09/21/2004 |
| 6788923 | Receiver noise reduction with expanding gated pulses A noise reducer generates a gate signal by detecting noise in a demodulated signal, and changes the lengths the gate pulses indicating the presence of noise according to the electric-field strength of a radio signal from which the demodulated signal has been obtaine... | 09/07/2004 |
| 6775526 | Modulated input signal filter A modulated input signal is filtered to reduce noise. The state of the input signal controls the state of a switch. Depending upon its state, the switch connects one of two circuits to a gate. The gate receives the input signal and it passes or blocks the signal dep... | 08/10/2004 |
| 6671504 | Radio squelch techniques A radio carrier signal is detected (20) after being converted to digital form and is filtered (22). A noise estimator (24) generates a noise estimate signal by estimating the noise in the detected signal due to atmospheric conditions and the noise due to ... | 12/30/2003 |
| 6671503 | Wireless microphone system There is provided an improved receiver unit for wireless microphone system. The receiver unit accomplishes desirable mute control in accordance with state transmitting conditions of electric wave from a wireless microphone. The receiver unit includes a re... | 12/30/2003 |
| 6577851 | Impulse noise blanker A radio back-end integrated circuit that includes a blanking switch having a signal input which receives an IF signal, a control input, and a signal output. Also included is a demodulator having an input coupled to the output of the blanking switch, and a... | 06/10/2003 |
| 6535724 | Receiver portion of a telephone A receiver portion of a telephone includes a differential amplifier stage with a single output, an electroacoustic transducer connected between the output, via a capacitor and ground and a unit for controlling switching on/off, connected to the differenti... | 03/18/2003 |
| 6292654 | Digital noise blanker for communications systems and methods therefor A digital noise reduction for a radio frequency receiver communication systems that is field programmable to function with a large variety of signaling schemes or waveforms. The noise reduction arrangement includes circuits to convert the mulit bit digita... | 09/18/2001 |
| 6259904 | Fast squelch circuit and method A technique is used by a squelch circuit (200) that generates a fast squelch. The technique involves generating a noise signal (211) from a demodulated signal (105), generating a squelch check request (405) of one of two types, performing a release (410) ... | 07/10/2001 |
| 6137888 | EM interference canceller in an audio amplifier A problem in hearing aids or other audio/acoustic amplifier circuits is that external sources of EM energy may be coupled into the electronics of the hearing aid so as to contribute to the acoustic output. The invention provides a circuit for removing the... | 10/24/2000 |
| 6055421 | Carrier squelch method and apparatus A radio receiver operates primarily in a first operating mode to process received signals (410). When a carrier signal detect is triggered while in the first operating mode (415, 420), the receiver temporarily operates in a second operating mode which has... | 04/25/2000 |
| 5893056 | Methods and apparatus for generating noise signals from speech signals In methods and apparatus for generating an LPC-encoded noise signal from an LPC-encoded speech signal, excitation parameters of the LPC-encoded speech signal for a current frame are randomized upon detection of speech in the current frame. For frames in w... | 04/06/1999 |
| 5889821 | Low noise front-end blanking and interleaving for satellite reception in pulsed interference environments A method and apparatus to enable high-quality digital transmissions to a satellite terminal operating in proximity to a radar source combines interleaving a sequence of channel symbols at a land station before transmission of an RF signal to a satellite, ... | 03/30/1999 |
| 5890059 | Impulse noise blanking apparatus A method and apparatus for suppressing noise in a radio receiver or the like due to electromagnetic interference generated by the firing of a spark plug which coordinates the operation of a noise blanker with the EST signal generated by an electronic engi... | 03/30/1999 |
| 5884151 | Switching device for short time mute switching of reproduction of NF-signal in radio receiver A circuit arrangement for brief mute switching of the reproduction of an LF signal in a radio receiver for performing additional control operations is described, in which the mute switching is effected by varying the current flow through the control path ... | 03/16/1999 |
| 5684840 | System for eliminating the affected by transmission errors in a digital stream A system for eliminating the effects of transmission errors in a digital stream is characterized by the presence of a predictor. The output signal of this system is taken from a predicted signal during the presence of errors and from the received signal w... | 11/04/1997 |
| 5630217 | Error-free pulse noise canceler used in FM tuner A pulse noise canceler in which the sensibility of FM pulse noise detection is decreased when an FM wave exceeding the minimum bandwidth which is predetermined of an FM wave detector is input to the pulse noise canceler. In order to detect pulse noise fro... | 05/13/1997 |
