211results about How to "Less dependent" patented technology

A capacitive sensing system is used to measure a time-varying ion current through a channel, such as an ion channel or protein pore. Such a capacitive system does not suffer problems of electrode corrosion and, when used with methods to control a build up of ion concentration, allows the use of measurement volumes around the channel with dimensions on a scale of nanometers.

A touch-sensitive apparatus comprises a light transmissive panel, an illumination arrangement and a detection arrangement. The illumination arrangement is configured to couple light into the panel via an incoupling site such that the light propagates by total internal reflection in opposite top and bottom surfaces of the panel and such that an object touching the top or bottom surface causes a change in the propagating light. The detection arrangement comprises a light detector arranged to detect the change in the propagating light. A compact and robust incoupling site is defined by a sheet-like micro-structured surface portion which is fixedly arranged on one of the top and bottom surfaces and configured to transmit light having an angle of incidence that enables light propagation by TIR inside the panel.

A low voltage amplifier having a class-AB control circuit which generates minimal or no surge current when the output of the amplifier clips to ground or the negative rail. The amplifier includes an input stage, a summing circuit, a class-AB control circuit and an output stage. The input stage connects to a first current source and couples to receive a pair of differential input signals to generate intermediate signals that are summed together using the summing circuit. A second current source supplies the summing circuit with current. The class-AB control circuit receives the summed signals from the summing circuit to provide control for the output stage which generates the amplifier result at the output of the amplifier which delivers current to drive an external load. Specifically, the class-AB control circuit is improved by the addition of a PMOS device connected in such a way to cut off the DC current path that is generated during the output stage clipping condition by a diode connected PMOS device and a NMOS sensing device both located near the output of the class-AB control circuit. Thereby, the additional PMOS device minimizes the surge current generated by the NMOS sensing device when the output of the amplifier clips to ground or the negative rail.

Determining physiological life signs, with a sensor that is in contact with the surface of a patient's skin at point proximate an artery, and measuring arterial blood vessel displacement and / or blood pressure changes. A data stream of measurements of is collected and a set of parameters from the collected data, a number of physiological life signs parameters, is extracted from the data. The physiological life signs that can be extracted include heart rate, breathing rate, systolic blood pressure, and diastolic blood pressure.