Abstract: An amplifier-based system having pulsed output includes an amplifier for amplifying a time varying voltage signal to produce an output voltage signal. A voltage-to-current (V-I) converter converts the output voltage signal into a current signal. An output stage including a current integrator integrates the current signal to generate an integrated voltage. An amplitude to time converter generates a pulse train from the integrated voltage, wherein a timing of the pulses in the pulse train represents the original time varying voltage signal. The pulse train representation permits transmission and accurate remote reconstruction of the original time varying voltage signal, such as signals generated by electrodes implanted inside a subject, including neural signals.

Abstract: Embodiments of the present invention described and shown in the specification and drawings include a system and method for monitoring the ventilation support provided by a ventilator that is supplying a breathing gas to a patient via a breathing circuit that is in fluid communication with the lungs of the patient.

Abstract: Embodiments of the present invention described and shown in the specification and drawings include a system and method for monitoring the ventilation support provided by a ventilator and automatically supplying a breathing gas to a patient via a breathing circuit that is in fluid communication with the lungs of the patient.

Abstract: The present invention provides a system and method for monitoring the ventilation support provided by a ventilator that is supplying a breathing gas to a patient via a breathing circuit that is in fluid communication with the lungs of the patient. The ventilator has a plurality of selectable ventilator setting controls governing the supply of ventilation support from the ventilator, each setting control selectable to a level setting.

Abstract: Embodiments of the present invention described and shown in the specification and drawings include an apparatus and method of controlling pulmonary ventilation for a ventilator supplying a breathing gas to a patient via a breathing circuit that is in fluid communication with the lungs of the patient. The ventilator has a plurality of selectable ventilator setting controls governing the supply of ventilation support from the ventilator, each setting control selectable to a level setting. The ventilator preferably receives at least one ventilator setting parameter signal, each ventilator setting parameter signal indicative of the level settings of one ventilator setting control, monitors a plurality of output signals to determine the sufficiency of the ventilation support received by the patient, and controls the level settings of the ventilator setting controls in response to the received ventilator setting parameter signal and the output signals.

Abstract: The subject invention pertains to a method and circuit design particularly useful for long time constant RC active or passive circuits in either continuous or discrete time domains. The subject invention also relates to a method and circuit design useful for long time constant RL active or passive circuits in either continuous or discrete time domains. The subject invention can find advantage in the mixed-signal, electronic circuit component market. The subject invention widens the application and the price/performance ratio of VLSI analog electronic circuits, and can be easily included in conventional circuit designs.

Abstract: An adaptive recursive filter for filtering electronic signals is disclosed. The filter comprises a plurality of cells connected sequentially. Each cell comprises a delay element; a means to multiply the output of the delay element by a first adaptive parameter, thus creating an adaptive feedback signal; a means to multiply the input to the cell by a second adaptive parameter, thus creating an adaptive input signal; and a first summation means to add the adaptive feedback signal to the adaptive input signal. The output gain of each cell is further multiplied by an adaptive weighing factor and all of the thus-created adaptively modified cell output gains are added together linearly by a plurality of second summation elements thus producing the output of the filter.This filter is characterized by a fully adaptive set of coefficients, an impulse response length decoupled from its order, and easily enforced stability conditions.