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Ess Technology Inc patents


Recent patent applications related to Ess Technology Inc. Ess Technology Inc is listed as an Agent/Assignee. Note: Ess Technology Inc may have other listings under different names/spellings. We're not affiliated with Ess Technology Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "E" | Ess Technology Inc-related inventors


Method for determining physiological parameters from physiological data

A method for determining a physiological parameter comprises receiving measured physiological data, parsing the measured physiological data into a plurality of time windows, each time window including a plurality of samples of the physiological data, fitting each of the plurality of time windows to a mathematical function utilizing a fitting function to obtain a plurality of sets of fit parameters, each set associated with a one of the plurality of time windows, and based on the plurality of sets of fit parameters, determining a physiological parameter.. . ... Ess Technology Inc

Signal processor using multiple frequency bands

A circuit and method is disclosed for filtering an audio signal. The circuit has a first quadrature source and multipliers for multiplying the input signal by the i and q outputs of the quadrature source. ... Ess Technology Inc

Switchable four-pole jack for supporting balanced headphones and headset operation in mobile applications

An approach is disclosed for achieving improved sound quality from mobile ‘hifi’ playback devices by driving compatible headphones in ‘balanced’ or ‘differential’ mode via standard size headphone connectors, while retaining full compliance with legacy jack connections and allowing use of a microphone. When a headphone is connected, a smartphone may determine whether the headphone is one capable of accepting balanced audio signals, or one that uses a conventional 4-pole ctia or omtp jack. ... Ess Technology Inc

Programmable circuit components with recursive architecture

A circuit component that is adjustable at run time and a method of designing the circuit are disclosed. The component contains a hierarchy of recursive levels in which a bottom level is a compound element made from two connected simple elements, and each higher level contains two compound elements connected in the same fashion. ... Ess Technology Inc

Low noise audio rendering circuit

A circuit and method for lowering noise in an audio rendering system is described. An analysis is made of the spectral content of an audio signal, i.e., the frequencies it contains, over a certain time interval. ... Ess Technology Inc

Method and apparatus for achieving high-output signal swing from class-d amplifier

An apparatus and method are disclosed for providing output signal swings that are greater than the supply voltage in a class-d amplifier. The amplifier circuit boosts the voltage across the amplifier load, such as a loudspeaker, by using capacitors to “charge pump” the voltage across the load and thus increase the voltage temporarily. ... Ess Technology Inc

Apparatus and method for detecting and driving headphones differentially in mobile applications

An apparatus and method is disclosed for achieving improved sound quality from mobile ‘hifi’ playback devices by driving compatible headphones in ‘balanced’ or ‘differential’ mode via standard size headphone connectors on the device, while retaining full compliance with legacy jack connections and conventional headphones. When a headphone is connected, a smartphone may determine whether the headphone is one capable of accepting balanced audio signals, or one that uses a conventional 3-pole jack or a 4-pole ctia or omtp jack. ... Ess Technology Inc

Apparatus and method for driving headphones differentially in mobile applications

An apparatus and method is disclosed for achieving improved sound quality from mobile ‘hifi’ playback devices by driving compatible headphones in ‘balanced’ or ‘differential’ mode via standard size headphone connectors on the device, while retaining full compliance with legacy jack connections and conventional headphones. When a headphone is connected, a smartphone may determine whether the headphone is one capable of accepting balanced audio signals, or one that uses a conventional 3-pole jack or a 4-pole ctia or omtp jack. ... Ess Technology Inc

Method and apparatus for achieving very high-output signal swing from class-d amplifier

An apparatus and method are disclosed for providing output signal swings that are greater than the supply voltage in a class-d amplifier. The amplifier circuit boosts the voltage across the amplifier load, such as a loudspeaker, by using capacitors to “charge pump” the voltage across the load and thus increase the voltage temporarily. ... Ess Technology Inc

Method and apparatus for achieving very high-output signal swing from class-d amplifier using fewer components

An apparatus and method are disclosed for providing output signal swings that are greater than the supply voltage in a class-d amplifier. The amplifier circuit boosts the voltage across the amplifier load, such as a loudspeaker, by using capacitors to “charge pump” the voltage across the load and thus increase the voltage temporarily. ... Ess Technology Inc








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