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Neuroimaging as a Marketing Tool
Neuroimaging as a means for validating whether a stimulus such as advertisement, communication, or product evokes a certain mental response such as emotion, preference, or memory, or to predict the consequences of the stimulus on later behavior such as consumption or purchasing.
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| Number | Title | Issue Date |
| 8111099 | Multi-channel audio playback apparatus and method A multi-channel audio playback apparatus including a channel interface, a first switching amplifier and a second switching amplifier is provided. The channel interface is used to receive multi-channel digital data and generate first channel digital data and second c... | 02/07/2012 |
| 8081028 | Systems and methods for improved over-current clipping Systems and methods for implementing over-current protection in amplifiers are provided, including systems, methods and devices for specifying a clip level at which to clip an audio signal in response to an over-current condition being detected. In an embodiment, th... | 12/20/2011 |
| 8076971 | Sampling frequency reduction for switching amplifiers The present invention is directed toward providing a system and method of reducing RF interference in switching amplifiers without degrading performance. In one embodiment, the sampling rate of coarse high voltage modulated pulsewidths are decreased relative to the ... | 12/13/2011 |
| 8067980 | Pulse width modulation circuit and class-D amplifier comprising the PWM circuit A pulse width modulation (PWM) circuit comprises a first integrator (g m1) with a first feedback capacitor (C1), a second integrator (gm1) with a second feedback capacitor (C2) and a comparator (A0) having a first input (V... | 11/29/2011 |
| 8063697 | Self-oscillating driver circuit A self-oscillating driver circuit comprises a driver stage, a feedforward path which is coupled to an input of the driver stage, and a feedback path which couples an output of the driver stage to an input of the feedforward path. The feedforward path comprises a fee... | 11/22/2011 |
| 8058927 | Amplifier modulation method and apparatus A signal is modulated by generating a pulse-width modulation signal and applying the pulse-width modulation signal to an input of a switched-mode amplifier. An output of the amplifier is coupled to a filter operable to impart either differential mode oscillations or... | 11/15/2011 |
| 8049557 | Self oscillating class D amplification device An amplification device, comprising a device input receiving a device input signal, an amplifier unit comprising a zero crossing detector unit, an output filter and a lead-lag compensation network. The zero crossing detector unit compares the device input signal wit... | 11/01/2011 |
| 8044714 | Device and method for amplifying pulsed RF signals Device and method are described for amplifying pulsed RF signals, comprising one or more transistors, each comprising a drain, a gate and a source. A device synchronizes the supply for the drain with an RF pulse. ... | 10/25/2011 |
| 8044715 | Method and system for increasing sampling frequency for switching amplifiers The present invention is directed toward providing a system and method of reducing RF interference in switching amplifiers without degrading performance. In one embodiment, the sampling rate of coarse high voltage modulated pulsewidths are increased relative to the ... | 10/25/2011 |
| 8040180 | Operational amplifier capable of compensating offset voltage An operational amplifier capable of compensating offset voltage includes an input stage circuit having a positive input end, a negative input end, a first current output end, and a second current output end, for outputting current corresponding to voltage received b... | 10/18/2011 |
| 8040181 | Time delay compensation and pulse width correction A system, method and apparatus is provided for pulse width correction in a power driver. In an embodiment, an apparatus includes an operational amplifier having an input and an output. The input of the operational amplifier is coupled to receive an input pulse signa... | 10/18/2011 |
| 8030994 | Driver for an inductive load A driver supplies an output voltage to an inductive load. The driver includes an input to receive a pulse width modulated control signal having a controllable duty cycle within a predetermined range. A first switch circuit receives a first switch signal to supply a ... | 10/04/2011 |
| 8022756 | Output circuits with class D amplifier Output circuits using pulse width modulation (PWM) and/or pulse density modulation (PDM) are described. In one aspect, a PWM output circuit includes a PWM modulator that operates based on a square wave signal instead of a sawtooth or triangular wave signal. In anoth... | 09/20/2011 |
| 8022757 | Class D power amplifier A class D power amplifier includes: a signal input terminal for receiving an analog signal; an analog signal processing unit for amplifying the analog signal; an integrating circuit for integrating the analog signal received from analog signal processing unit; a PWM... | 09/20/2011 |
| 8008969 | Single supply class-D amplifier Traditionally, switching amplifiers (i.e., class-D and class-G) with negative supply rails had issues with direct current (DC) power loss, included large external capacitors, had a comparative reduction in efficiency, and oftentimes included separate power managemen... | 08/30/2011 |
| 7999610 | Class D amplifier capable of setting restraint power A Class D amplifier capable of setting restraint power is provided, which comprises: an audio amplification unit, a pulse width modulation (PWM) unit, a first pre-drive unit, a second pre-drive unit, a first power transistor set, a second power transistor set and a ... | 08/16/2011 |
| 7994853 | Class-D amplifier with dual feedback loop A class-D amplifier with dual feedback loop scheme has a gain adjusting circuit, a second-order integrator, two comparators, a logic circuit and an output driver. Two differential output terminals of the class-D amplifier are connected to two differential amplifiers... | 08/09/2011 |
| 7990211 | Class D amplifier circuit A pulse monitor circuit detects the presence or non-presence of the output pulses output from an output stage circuit. The pulse monitor circuit outputs an up signal to the up/down counter when the output pulses do not exist at all and outputs a down signal to the u... | 08/02/2011 |
| 7965137 | Class-D amplifier A class-D power amplifier according to the present invention includes: a pulse width modulation circuit which modulates an analog signal into low-level and high-level binary signals; and a detection circuit which turns off operation of a circuit connected with a bac... | 06/21/2011 |
| 7965138 | Concept, method and apparatus of improved distortion switched-mode amplifier Systems and methods for switched-mode amplifiers having improved harmonic distortion are disclosed. High order in-band filtering is enabled without undue trade-off of distortion due to intermodulation/aliasing. A pre-modulation block is introduced, deployed between ... | 06/21/2011 |
| 7956681 | Class D amplifier having PWM circuit with look-up table A class D amplifier includes a noise-shaping modulator, a pulse width modulator, and a pulse amplifier. The noise-shaping modulator receive a pulse code modulated (PCM) signal and produces an oversampled PCM signal. The pulse width modulator produce a pulse width mo... | 06/07/2011 |
| 7952426 | Digital audio amplifier and digital audio amplifying method therefor A digital audio signal amplifier and a digital audio signal amplifying method provide safety and power efficiency by integrating a switching mode power supply and a digital audio amplifier into an apparatus. The digital audio amplifier includes a pulse modulation un... | 05/31/2011 |
| 7948308 | Filter compensation for switching amplifiers Embodiments of the present invention provide methods and systems for limiting bipolar current flow in a switching amplifier. Embodiments of the present invention are directed to a multi-referenced switching amplifier. In some embodiment, the switching amplifier is a... | 05/24/2011 |
| 7944289 | Minimum pulse generation in a class-D amplifier For minimum pulse generation in a class-D amplifier, a trapezoid switching waveform shape is used to replace the tradition triangle type to generate PWM pulses. Two voltages are compared with a sawtooth wave signal to generate the trapezoid waveform signal and a con... | 05/17/2011 |
| 7932777 | Switching amplifier for driving reactive loads A switching amplifier drives balanced piezoelectric or other capacitive or reactive loads with a minimum physical electronics volume, enabling a compact arrangement that can combine amplifier and transducer at the same physical location. Power supply current is mini... | 04/26/2011 |
| 7932778 | Power efficient amplifier An amplifier generates a tri-level output signal in response to an input signal that is pulse-width modulated. The amplifier is filterless and DC free. A control block supplies a multitude of pulse-width modulated (PWM) signals in response to the received digital in... | 04/26/2011 |
| 7924089 | Offset voltage correction circuit and class D amplifier A class D amplifier includes an input unit that inputs an input signal and an integrator which includes a differential operational amplifier having an offset voltage correction function. The integrator integrates the input signal input. A pulse-width modulator modul... | 04/12/2011 |
| 7920023 | Switching amplifier A switching amplifier includes a modulator, which includes a pulse generator. The pulse generator generates positive and negative pulses, in response to an input signal, and the frequency of the negative pulses can be controlled independently of the frequency of the... | 04/05/2011 |
| 7911267 | Sigma-delta class-D amplifier and control method for a sigma-delta class-D amplifier A sigma-delta class-D amplifier includes a quantizer to quantize an input to produce a digital signal, and an output stage to produce an output according to the digital signal. The quantizer has a smaller step size so that the digital signal has at least five logica... | 03/22/2011 |
| 7911268 | Apparatus and method for improving the feedback linearity of a 1.5-bit sigma-delta class-D amplifier A conversion circuit is provided for a 1.5-bit Σ-Δ class-D amplifier to improve the feedback linearity of the class-D amplifier, by periodically inverting and mixing a first positive feedback signal and a first negative feedback signal from the power stage of the ... | 03/22/2011 |
| 7888997 | Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters Systems, methods, and apparatuses are provided for linear envelope elimination and restoration transmitters that are based on the polar modulation operating in conjunction with the orthogonal recursive predistortion technique. The polar modulation technique enhances... | 02/15/2011 |
| 7884667 | Pulse area modulation and high-efficiency linear power amplifier system using the same A linear power amplifier system using pulse area modulation includes: an envelop/phase decomposer for decomposing an input signal into an envelop signal and a phase signal; a pulse area modulator for modulating the envelop signal such that an area of the modulated e... | 02/08/2011 |
| 7880539 | Power amplifier and liquid jet printing apparatus A power amplifier includes: a modulator pulse-modulating a drive waveform signal serving as a reference of a drive signal applied to actuators and outputting a modulated signal; a digital power amplifier amplifying the power of the modulated signal and outputting an... | 02/01/2011 |
| 7872522 | Noise reduction system and method for audio switching amplifier Noise reduction for a switching amplifier system having a differential output stage and demodulator filter responsive to complementary PWM signals includes generating in-phase PWM signals and gradually adjusting their duty cycle between a low duty cycle and the full... | 01/18/2011 |
| 7872523 | Radio frequency (RF) envelope pulsing using phase switching of switch-mode power amplifiers A radio frequency (RF) power generator includes a first switch-mode amplifier that generates a first RF signal in accordance with a first control signal and a second switch-mode amplifier that generates a second RF signal in accordance with a second control signal. ... | 01/18/2011 |
| 7868693 | Class-D amplifier An amplifier that receives an input signal and outputs an amplified output signal includes an integration stage, a comparison stage, and a full bridge circuit. The integration stage is be used for receiving a constant common mode voltage, for receiving a first signa... | 01/11/2011 |
| 7868692 | Low noise and common mode current power supply A power supply includes: a switching amplifier including an input and an output, the amplifier input being adapted to be powered by an electrical power source; a transformer including a primary and a secondary winding on a magnetic core, the number of winding turns ... | 01/11/2011 |
| 7859331 | Predictive feedback compensation for PWM switching amplifiers Methods and systems are disclosed for predictive feedback compensation (PFC) circuitry for suppressing distortions caused by supply voltage variations and output amplitude switching non-idealities in pulse width modulated (PWM) switching amplifiers by pre-compensati... | 12/28/2010 |
| 7855597 | Class-D amplifier The invention discloses a class-D amplifier, which is used for driving a two-terminal load according to a set of analog signals. The D-class amplifier includes a pulse-width modulation (PWM) circuit, a signal processing circuit and a driving amplifier circuit. The P... | 12/21/2010 |
| 7852149 | Quadrature envelope elimination and restoration (EER) amplifier The present invention is a system for amplifying a signal input. The system may include a signal separator. The signal separator may be configured for receiving the signal input and separating the signal input to form a first component, a second component, a third c... | 12/14/2010 |
