Patent application number | Description | Published |
20100165709 | ROBUST SRAM MEMORY CELL CAPACITOR PLATE VOLTAGE GENERATOR - An SRAM having two capacitors connected in series between respective bit storage nodes of each memory cell. The two inverters of the memory cell are powered by a positive voltage and a low voltage. The two capacitors are connected to each other at a common node. A leakage current generator is coupled to the common node. The leakage current generator supplies to the common node a leakage current to maintain a voltage which is approximately halfway between the voltages of the high and low SRAM supplies. | 07-01-2010 |
20100169035 | METHODS AND SYSTEMS FOR OBSERVING SENSOR PARAMETERS - The invention disclosed herein provides methods and materials for observing the state of a sensor, for example those used by diabetic patients to monitor blood glucose levels. Typically a voltage such as a voltage pulse is applied to the sensor in order to solicit a current response from which for example, factors such as impedance values can be derived. Such values can then be used as indicators of a sensor's state, for example the state of sensor hydration, sensor noise, sensor offset, sensor drift or the like. | 07-01-2010 |
20100314149 | HERMETICALLY-SEALED ELECTRICAL CIRCUIT APPARATUS - Hermetically-sealed electrical circuit apparatus and methods for constructing such apparatus using one or more seal portions. | 12-16-2010 |
20100314726 | FARADAY CAGE FOR CIRCUITRY USING SUBSTRATES - An apparatus and method uses a first Faraday cage portion and a second Faraday cage portion to provide a Faraday cage enclosure surrounding at least one circuit device. | 12-16-2010 |
20110230741 | METHODS AND SYSTEMS FOR OBSERVING SENSOR PARAMETERS - The invention disclosed herein provides methods and materials for observing the state of a sensor, for example those used by diabetic patients to monitor blood glucose levels. Typically a voltage such as a voltage pulse is applied to the sensor in order to solicit a current response from which for example, factors such as impedance values can be derived. Such values can then be used as indicators of a sensor's state, for example the state of sensor hydration, sensor noise, sensor offset, sensor drift or the like. | 09-22-2011 |
20120024064 | TECHNIQUES FOR APPROXIMATING A DIFFERENCE BETWEEN TWO CAPACITANCES - A system includes a capacitance adjustment module and a control module. The capacitance adjustment module is configured to connect one or more of N capacitors in parallel with one of a first and second capacitance. The control module identifies the smaller of the first and second capacitances and identifies the larger of the first and second capacitances. Subsequently, the control module, during each of M iterations, instructs the capacitance adjustment module to connect at least one of the N capacitors across a set of nodes in parallel with the smaller identified capacitance, and determines whether the capacitance associated with the set of nodes is greater than the larger identified capacitance. After the M iterations, the control module approximates the difference between the first and second capacitances based on which of the N capacitors are connected across the nodes. M and N are integers greater than or equal to 1. | 02-02-2012 |
20130170287 | STABLE MEMORY SOURCE BIAS OVER TEMPERATURE AND METHOD - Random access memory having a plurality of memory cells, each of the plurality of memory cells having a memory element and a first electrical characteristic being variable based, at least in part, on temperature and a bias circuit operatively coupled to at least one of the plurality of memory cells, the bias circuit being configured to generate a bias voltage for the at least one of the plurality of memory cells. The bias circuit has a second electrical characteristic being variable based, at least in part, on temperature. The first electrical characteristic is approximately proportional to the second electrical characteristic over a predetermined range of temperatures, the predetermined range of temperatures being greater than zero. The bias voltage on each of the plurality of memory cells is approximately proportional with variations in the first electrical characteristic over the predetermined range of temperatures. | 07-04-2013 |
20130182523 | ROBUST SRAM MEMORY CELL CAPACITOR PLATE VOLTAGE GENERATOR - An SRAM having two capacitors connected in series between respective bit storage nodes of each memory cell. The two inverters of the memory cell are powered by a positive voltage and a low voltage. The two capacitors are connected to each other at a common node. A leakage current generator is coupled to the common node. The leakage current generator supplies to the common node a leakage current to maintain a voltage which is approximately halfway between the voltages of the high and low SRAM supplies. | 07-18-2013 |
20130234692 | VOLTAGE SUPPLY AND METHOD WITH TWO REFERENCES HAVING DIFFERING ACCURACY AND POWER CONSUMPTION - Voltage supply and method having a first reference and a second reference. The first reference has an operation mode configured to supply a first reference voltage at a first accuracy and consume an operation power and a standby mode configured to consume standby power less than the operation power. The second reference is configured to supply a second reference having a second accuracy less than the first accuracy of the first reference and which consumes a second reference power less than the operation power of the first reference, the second reference voltage being trimmable based, at least in part, on a comparison of the first reference voltage to the second reference voltage. | 09-12-2013 |
20130289658 | STIMULATION WAFEFORM GENERATOR FOR AN IMPLANTABLE MEDICAL DEVICE - This disclosure describes techniques for generating stimulation current pulses that have differing pulse shapes in a medical device. A circuit architecture is described that is configured to charge a capacitor to an initial amount of charge, modulate the amount of charge stored in the capacitor based on a control signal, and generate a stimulation current pulse that has an amplitude based on the amount charge stored in the capacitor. The circuit architecture may be configured to generate complex pulse shapes, such as, e.g., steps, ramps, bursts, and combinations thereof. | 10-31-2013 |
20140027889 | RECONSTITUTED WAFER PACKAGE WITH HIGH VOLTAGE DISCRETE ACTIVE DICE AND INTEGRATED FIELD PLATE FOR HIGH TEMPERATURE LEAKAGE CURRENT STABILITY - A reconstituted wafer level package for a versatile high-voltage capable component is disclosed. The reconstituted wafer package includes a dice substantially encapsulated by a mold material except for a first face. A dielectric layer is disposed on the first face of the dice. The package further includes an array of ball bumps formed on an exterior facing portion of the dielectric layer. Further, a field plate is disposed within the dielectric material and interposed between the first face of the dice and the ball bump array. The field plate may be spaced from the dice by a predetermined distance to prevent dielectric breakdown of the material of the dielectric layer. | 01-30-2014 |
20140374145 | HERMETICALLY-SEALED ELECTRICAL CIRCUIT APPARATUS - Hermetically-sealed electrical circuit apparatus and methods for constructing such apparatus using one or more seal portions. | 12-25-2014 |
20150051670 | Devices and Methods to Provide Stimulation Therapy in the Presence of External Conditions that Induce Undesirable Perturbations - Devices and methods compensate for perturbations in a stimulation signal caused by external conditions such as a magnetic field of an MRI machine so that stimulation therapy may continue in the presence of the external condition. Compensation for the perturbations during a stimulation pulse of a stimulation phase may be provided by using feedback within a stimulation current source. Perturbations during a recharge phase may be addressed by utilizing an active recharge at least when the external condition is present. Furthermore, compensation for perturbations during a recharge pulse of the active recharge phase may be provided by using feedback within a recharge current source. Passive recharge may be used instead of active recharge when the external condition is not present to preserve battery life of the stimulation device. The stimulation device may include a sensor to detect the external condition so that an appropriate mode of recharge may be chosen. | 02-19-2015 |