| AUDIOASICS A/S Patent applications |
| Patent application number | Title | Published |
|---|
| 20110293115 | DYNAMICALLY BIASED AMPLIFIER - An amplifier including an input stage, an output stage, an adjustable bias current generator and a level detector. The input stage may receive and amplify or buffer an input signal. The input stage may be biased by a first bias current. The output stage may supply an output signal to an amplifier load. The output stage may be biased with a second bias current. The adjustable bias current generator may be operatively coupled to the input stage and the output stage to supply these with the first and second bias currents, respectively. The level detector may be operatively coupled to the input signal and the adjustable bias current generator to control the first and second bias currents depending upon the input signal. The adjustable bias current generator may adjust the respective levels of first and second bias currents in opposite directions. Disclosed is an electroacoustical transducer incorporating the amplifier. | 12-01-2011 |
| 20110267142 | MULTI-STATE DC-DC CONVERTER - DC-DC converters adapted to provide two or more DC output voltages. More particularly, a multi-state or mode DC-DC converter circuit comprising first and second controllable switches configured for unidirectional conduction of charging current. | 11-03-2011 |
| 20110264719 | HIGH RADIX DIGITAL MULTIPLIER - The present invention relates to power and hardware efficient digital multipliers configured to multiply an N-bit multiplicand with an M-bit multiplier. The digital multipliers comprise efficient partial product generation through sharing of at least one partial product result. | 10-27-2011 |
| 20110200212 | TEMPERATURE COMPENSATED VOLTAGE PUMP - The present invention relates to an integrated circuit voltage pump with temperature compensation circuitry providing improved DC output voltage accuracy over an operational temperature range. The compensation circuitry is operative to eliminate or reduce temperature induced changes of voltage drops across semiconductor diodes of the integrated circuit voltage pump. | 08-18-2011 |
| 20110182446 | CONTROLLED OVERLAP DRIVER CIRCUIT - The present invention relates to a driver circuit wherein upper and lower legs of a first driver comprise first and second sets of parellelly coupled semiconductor switches, respectively. A control circuit is configured to generate respective control signals for the first and second sets of parellelly coupled semiconductor switches to create a current path through the upper and lower legs during an overlap time period between state transitions of a driver output. | 07-28-2011 |
| 20110051954 | SIGNAL CONDITIONER WITH SUPPRESSION OF INTERFERING SIGNALS - A semiconductor die with an integrated circuit providing a signal conditioner ( | 03-03-2011 |
| 20110029109 | AUDIO SIGNAL CONTROLLER - The present invention relates to an audio signal controller adapted to receiving first and second digital audio signals and estimating a signal feature of the first or second digital audio signal. The estimated signal feature is compared with a predetermined feature criterion and the audio signal controller switches from conveying the first digital audio signal to conveying the second digital audio signal to a controller output, or vice versa, at a zero-crossing of the first digital audio signal or the second digital audio signal based on the comparison between the estimated signal feature and the predetermined feature criterion. | 02-03-2011 |
| 20110026739 | HIGH LEVEL CAPABLE AUDIO AMPLIFICATION CIRCUIT - The present invention relates to an audio amplification circuit with first and second signal channels which generate first and second digital audio signals with different signal amplifications from a common audio input signal and a method of amplifying a common audio input signal with different signal amplifications to provide first and second digital audio signals with different amplification. The audio amplification circuit is particularly well-adapted for cooperating with an external or integral audio signal controller configured for receipt and processing of the first and second digital audio signals. | 02-03-2011 |
| 20090316935 | DIGITAL MICROPHONE - An integrated circuit, configured to process microphone signals, where the integrated circuit comprises: a preamplifier ( | 12-24-2009 |
| 20090066549 | SIGMA DELTA MODULATOR - A method of controlling a sigma delta modulator with a loop which establishes a signal transfer function, STF, and a quantization noise transfer function, NTF, of the sigma delta modulator, wherein the sigma delta modulator receives an input signal, x(n), and provides a modulated output signal, y(n) in response to the input signal. The method is characterized in comprising the step of controlling the sigma delta modulator to change the quantization noise transfer function, NTF, in response to a signal feature, A(n), which is correlated with the input signal. | 03-12-2009 |
| 20080219474 | MICROPHONE WITH VOLTAGE PUMP - An integrated circuit configured to provide a microphone output signal, comprising: a preamplifier coupled to receive an input signal, generated by either a first microphone member or a second microphone member, where one of the members is movable relative to the other microphone member; a voltage pump to output a pumped voltage; and a low-pass filter coupled to filter the pumped voltage from the voltage pump and to provide a bias voltage to either microphone member. | 09-11-2008 |
