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Felton
Donald Felton, Cambridgeshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20090172329 | Providing secure services to a non-secure application - A data processing apparatus comprising a data processor for processing data in a secure and a non-secure mode, said data processor processing data in said secure mode having access to secure data that is not accessible to said data processor processing data in said non-secure mode; and a further processing device for performing a task in response to a request from said data processor issued from said non-secure mode, said task comprising processing data at least some of which is secure data, said further processing device comprising a secure data store, said secure data store not being accessible to processes running on said data processor in non-secure mode; wherein prior to issuing any of said requests said data processor is adapted to perform a set up operation on said further data processing device, said set up operation being performed by said data processor operating in said secure mode and comprising storing secure data in said secure data store on said further processing device, said secure data being secure data required by said further processing device to perform said task; wherein in response to receipt of said request from said data processor operating in said non-secure mode said further data processing device performs said task using data stored in said secure data store to access any secure data required. | 07-02-2009 |
| 20110093723 | Display of a verification image to confirm security - A handheld device | 04-21-2011 |
Donald Felton, Ely GB
| Patent application number | Description | Published |
|---|---|---|
| 20080294848 | Control data modification within a cache memory - A data processing system is provided with at least one processor | 11-27-2008 |
George Nicholas Felton, Gillingham GB
| Patent application number | Description | Published |
|---|---|---|
| 20080317617 | Fluid pump - A pump for fluid, comprising a pump body defining a bore, a pumping plunger having an end region which is slidably received within the bore, a spill port defined by the pump body in a wall of the bore which port is coverable by the end region of the pumping plunger as the plunger is driven on a pumping stroke, in use, so as to initiate fluid pressurization within a pumping chamber; and a spill feature defined by the pumping plunger being arranged to uncover the spill port during a pumping stroke so as to cause depressurization of the pumping chamber. The pumping plunger further defines a speed sensitive feature configured to permit a controlled leak of fluid from the pumping chamber to the spill port towards the end of a pumping stoke. The invention also encompasses a pumping plunger particularly suited for use in the above described pump. | 12-25-2008 |
| 20090166445 | Fuel injector assembly - A fuel injector assembly comprising an injector body having a leading end, a fuel inlet passage, a backleak passage and a trailing end that terminates in an end surface; a cap that fits over the trailing end of the injector body to define therebetween a chamber for receiving fuel from said backleak passage; and a seal for sealing said chamber to prevent the flow of fuel therefrom, wherein said seal is disposed between said end surface of the trailing end and an inlet end of said fuel inlet passage. | 07-02-2009 |
George Nicholas Felton, Kent GB
| Patent application number | Description | Published |
|---|---|---|
| 20090138179 | Fuel injection system - A fuel injection system for an internal combustion engine comprises a plurality of pumps arranged to supply respective flows of pressurized fuel to a common accumulator volume that supplies the pressurized fuel in turn to a plurality of fuel injectors. An engine control unit controls the flow rate of pressurized fuel into the accumulator volume in response to engine load. The flow rate of pressurized fuel from at least one pump of the plurality is dependent upon engine speed; whereas at least one other pump of the plurality comprises a fuel output control responsive to the engine control unit enabling the flow rate of pressurized fuel from that pump to be varied independently of engine speed. In this way, the engine control unit controls the aggregate flow rate of pressurized fuel from the pumps into the accumulator volume, while controlling only one of the pumps. This reduces the cost of control apparatus and allows greater freedom of pump selection and flow circuit design. | 05-28-2009 |