Warrington, GB
Allan R. Warrington, Chislehurst GB
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20120200962 | ESD CLAMP FOR MULTI-BONDED PINS - A circuit comprises a plurality of segments and a clamp circuit. Each of the plurality of segments comprises a bond pad coupled to a multi-bonded pin via a respective bond wire and a conductor coupling the bond pad to a respective internal connection. The bond pad from each of the plurality of segments is coupled to the same multi-bonded pin. The clamp circuit comprises a plurality of input pins and a plurality of clamp transistors. Each input pin is coupled to the bond pad of a respective one of the plurality of segments via the respective conductor. Each clamp transistor is coupled to a respective one of the input pins, wherein each of the plurality of clamp transistors is configured to prevent a voltage on the respective conductor from exceeding a respective voltage limit. | 08-09-2012 |
Allan Richard Warrington, Kent GB
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20100013395 | DYNAMIC HEADROOM CONTROL FOR LCD DRIVER - An LED driver controller comprises a voltage regulator for controlling an output voltage to a top of a plurality of LED strings responsive to at least a reference voltage. A plurality of first circuitries each associated with a node at a bottom of each of the plurality of LED strings compares a voltage at the bottom of each of the plurality of LED strings with a high reference voltage and a low reference voltage. Control logic generates a first control signal when the voltage at the bottom of each node of the plurality of LED strings exceeds the high reference voltage and generates a second control signal when the voltage at least one of node of the plurality of LED strings falls below the low reference voltage. Second circuitry responsive to the first control signal and the second control signal generates the reference voltage. The reference voltage is controlled to cause the voltage at the bottom of the lowest voltage node of the plurality of LED strings to remain between the high reference voltage and the low reference voltage. | 01-21-2010 |
20100013412 | TRANSIENT SUPPRESSION FOR BOOST REGULATOR - A circuit for generating an output voltage to a top node of a plurality of LED strings. The circuit includes an inductor having a load current flowing therethrough and a switching transistor responsive to a switching control signal. An integrator generates a compensation voltage responsive to a voltage at a bottom node of the LED string and a reference voltage. Circuitry for combining an offset with the compensation voltage is responsive to the compensation voltage and the load current through the inductor. The offset is generated only during a step load change of the load current and substantially reduces voltage transients from the compensation voltage and the output voltage. A summation circuit sums the compensation voltage including the offset with at least the voltage at the bottom node of the LED string to generate a first control signal. A latch generates the switching control signal responsive to the first control signal and a leading edge blanking signal. | 01-21-2010 |
Allan Richard Warrington, Chislehurst GB
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20090322306 | DUAL USE DELAY CAPACITOR - An integrated circuit comprises a control input providing a connection to a capacitor. A delay circuit generates a delayed enable signal responsive to a provided enable signal. A second circuit performs a control function. A switching circuit responsive to the delayed enable signal connects the control input to the delay circuit in a first mode of operation and connects the control input to the second circuit in a second mode of operation. | 12-31-2009 |
Brian Warrington, Hertford GB
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20090209759 | AUTOMATED ITERATIVE DRUG DISCOVERY AND SYNTHESIS - The present invention relates to methods and systems for de novo iterative synthesis, an automated iterative drug discovery method and system providing for rapid identification and synthesis of novel compounds. | 08-20-2009 |
Brian Herbert Warrington, Essex GB
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20090054261 | METHOD - A method of controlling a system having a microfluidic channel structure in which fluids are able to interact to produce at least one product comprises the steps of: | 02-26-2009 |
20090142853 | MICROFLUIDIC SYSTEM AND METHODS - A microfluidic system comprising: at least one microfluidic channel, the inner surface of which is fluorinated or fluorous; and a pump for supplying a flow of an aqueous medium containing chemical reagents or assay components to said microfluidic channel. Preferably, the apparatus further comprises a supply of a non-aqueous medium which is compatible with the surface of the microfluidic channel but immiscible with the aqueous medium, such as a perfluorocarbon solvent, for forming a sheath around the flowing aqueous medium whereby the aqueous medium is suspended away from the surface of the microfluidic channel. Also provided are methods for carrying out a chemical reaction or a biological assay in the microfluidic systems of the subject matter disclosed herein. | 06-04-2009 |
Brian Herbert Warrington, Hertfordshire GB
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20090147253 | MICROFLUIDIC CHIP APPARATUSES, SYSTEMS AND METHODS HAVING FLUIDIC AND FIBER OPTIC INTERCONNECTIONS - Microfluidic Chip Apparatuses, Systems, and Methods having Fluidic and Fiber Optic Interconnections. According to one embodiment, apparatuses and methods are provided for connecting a light-guiding conduit to a microfluidic channel. First and second substrates with first surfaces can be provided, wherein the first surfaces of the first and second substrates form a microfluidic channel and a connection channel when the first surfaces are positioned together, and wherein the connection channel extends from an edge of the first surface of the first or second substrate to the microfluidic channel. The apparatus and method can also include bonding the first surfaces of the first and second substrates to form the microfluidic channel and the connection channel. A light-guiding conduit can be inserted into the connection channel such that the light-guiding conduit connects to the microfluidic channel and filling an area between the light-guiding conduit and the connection channel for forming a liquid-tight seal between the light-guiding conduit and the connection channel. | 06-11-2009 |
20100011842 | BIOCHEMICAL ASSAY METHODS - Biochemical Assay Methods. There is described a method for determining a value that allows the effect that a compound has on a target to be compared with the effect that another compound has on the target, which method comprises adding the compound, at a concentration which continuously varies with time, to a flow of the target. The method can be carried out using a microfluidic system. | 01-21-2010 |
John Patrick Warrington, Greater Manchester GB
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20100299380 | DIGITAL SIGNAL PROCESSING - A digital signal processor for interpolating a gain (coefficient) to be applied to a digital signal, the processor including: first memory means for storing a target gain coefficient; second memory means for storing a current gain coefficient; response determining means for determining an output gain coefficient based on the target gain coefficient and the current gain coefficient; means for storing the output gain coefficient in the second memory means in place of the current gain coefficient, to be used as the current gain coefficient in subsequent operations. In this way, a gain coefficient interpolator can be implemented using hardware rather than the previous DSP software approach. | 11-25-2010 |