Patent application number | Description | Published |
20100312988 | Data processing apparatus and method for handling vector instructions - A data processing apparatus and method and provided for handling vector instructions. The data processing apparatus has a register data store with a plurality of registers arranged to store data elements. A vector processing unit is then used to execute a sequence of vector instructions, with the vector processing unit having a plurality of lanes of parallel processing and having access to the register data store in order to read data elements from, and write data elements to, the register data store during the execution of the sequence of vector instructions. A skip indication storage maintains a skip indicator for each of the lanes of parallel processing. The vector processing unit is responsive to a vector skip instruction to perform an update operation to set within the skip indication storage the skip indicator for a determined one or more lanes. The vector processing unit is responsive to a vector operation instruction to perform an operation in parallel on data elements input to the plurality of lanes of parallel processing, but to exclude from the performance of the operation any lane whose associated skip indicator is set. This allows the operation specified by vector instructions to be performed conditionally within each of the lanes of parallel processing without any modification to the vector instructions that are specifying those operations. | 12-09-2010 |
20110080959 | Video reference frame retrieval - A video data processing apparatus is provided comprising processing circuitry for performing video processing operations requiring access to video reference frames, and a memory management unit configured to translate virtual addresses into physical addresses. Translation circuitry is provided responsive to a memory access request for reference frame pixel data issued by the processing circuitry to perform a translation process on video reference frame information such that the set of input values for at least one hash function in the memory management unit comprises video reference frame identifier bits contained with the video reference frame information. This approach has been found to reduce the frequency of aliasing in the memory management unit when retrieving video reference frames. | 04-07-2011 |
20110087858 | Memory management unit - A data processing apparatus is provided comprising a plurality of master devices configured to issue memory access requests including virtual addresses. A memory management unit is configured to receive memory access requests and to translate a virtual address included in a memory access request from a requesting master device into a physical address indicating a storage location in memory. The memory management unit has an internal storage unit having a plurality of entries wherein indications of corresponding virtual address portions and physical address portions are stored. The memory management unit is configured to select an entry of the internal storage unit in dependence on the virtual address and an identifier of the requesting master device. Conflict between the master devices in their usage of the internal storage unit is thus avoided. | 04-14-2011 |
20140055421 | TRACKING OBJECTS ON A TOUCH SURFACE - A device implements a method of tracking objects on a touch surface of an FTIR based touch-sensitive apparatus. The method repeatedly operates to generate an interaction pattern that indicates local changes in interaction on the touch surface, identify apparent peaks in the interaction pattern, and update existing movement trajectories based on the apparent peaks. An error suppression process is executed at least intermittently in the method to process the apparent peaks and/or the existing movement trajectories to identify implicated trajectories with a potential tracking problem, define two or more movement propositions for each implicated trajectory, and cause an evaluation of the movement propositions in one or more subsequent repetitions of the method. The error suppression process improves tracking by postponing the final decision on how to track the object of the implicated trajectory until more information is available. | 02-27-2014 |
20140368471 | PERFORMANCE MONITORING AND CORRECTION IN A TOUCH-SENSITIVE APPARATUS - Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, along detection lines across a touch surface. A signal processor operates in a sequence of repetitions to: generate data samples that represent detected signal energy on the actual detection lines; generate based on the data samples, an interpolated sinogram comprising interpolation samples that represent fictitious detection lines which have a desired location on the touch surface; and reconstruct a signal interaction pattern for the touch surface based on the interpolated sinogram. The signal processor implements an error correction to counteract the influence of a change in validity status for a data sample among the data samples, by identifying interpolation samples affected by the change in validity status, and by setting each identified interpolation sample to a value that maintains a relative signal transmission of the fictitious detection line from a former repetition. | 12-18-2014 |
20140375607 | TRACKING OBJECTS ON A TOUCH SURFACE - A device implements a method of tracking objects on a touch surface of an FTIR based touch-sensitive apparatus. | 12-25-2014 |
20150035774 | EFFICIENT TOMOGRAPHIC PROCESSING FOR TOUCH DETERMINATION - Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, along detection lines across a touch surface. A signal processor operates to generate data samples indicative of transmitted signal energy on parallel detection lines at a number of different angles across the touch surface; process the data samples for generation of interpolated Fourier coefficients at grid points in a regular grid in a Fourier domain; and operate a two-dimensional inverse Fourier transform on the interpolated Fourier coefficients so as to generate an interaction pattern for the touch surface. The interpolated Fourier coefficients are generated sequentially for individual groups of grid points. Each individual group comprises grid points that have equal distance to an origin in the regular grid, e.g. grid points that are mapped onto each other by one or ore lines of symmetry in the regular grid. The group-based processing may improve processing speed and/or reduce the need for data storage. | 02-05-2015 |
20150054759 | EFFICIENT TOMOGRAPHIC PROCESSING FOR TOUCH DETERMINATION - Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, along detection lines across a rectangular touch surface with first and second spatial dimensions. A signal processor operates to transform energy values for the detection lines into Fourier coefficients arranged as data points on a regular grid defined by first and second frequency dimensions. To generate an interaction pattern for the touch surface, the signal processor operates a first 1D inverse FFT on the data points with respect to the second frequency dimension, so as to generate first values transformed into the second spatial dimension, and operates a second 1D inverse FFT on a selected subset of the first values with respect to the first frequency dimension to generate second values that represent the interaction pattern. The selected subset is defined by the data points that fall within an extent of the touch surface in the second spatial dimension, thereby reducing the total number of inverse FFT operations. | 02-26-2015 |
20150089148 | MEMORY MANAGEMENT UNIT - A data processing apparatus is provided comprising a plurality of master devices configured to issue memory access requests including virtual addresses. A memory management unit is configured to receive memory access requests and to translate a virtual address included in a memory access request from a requesting master device into a physical address indicating a storage location in memory. The memory management unit has an internal storage unit having a plurality of entries wherein indications of corresponding virtual address portions and physical address portions are stored. The memory management unit is configured to select an entry of the internal storage unit in dependence on the virtual address and an identifier of the requesting master device. Conflict between the master devices in their usage of the internal storage unit is thus avoided. | 03-26-2015 |
20150130769 | OBJECT DETECTION IN TOUCH SYSTEMS - A signal processor implements a technique for detecting objects on a panel which transmits signals inside the panel such that the objects are allowed to interact with (e.g. attenuate) the signals by contact with a touch surface of the panel. The signal processor operates to define cells that have a given location on the touch surface and are associated with a respective set of intersecting paths for the signals across the touch surface. The signal processor operates to obtain ( | 05-14-2015 |
20150138105 | OBJECT DETECTION IN TOUCH SYSTEMS - A signal processor implements a technique for detecting objects on a panel which transmits signals inside the panel such that the objects are allowed to interact with (e.g. attenuate) the signals by contact with a touch surface of the panel. The signal processor operates to define cells that have a given location on the touch surface and are associated with a respective set of intersecting paths for the signals across the touch surface. The signal processor operates to obtain ( | 05-21-2015 |
Patent application number | Description | Published |
20090219737 | TRANSMISSION SYSTEM AND A METHOD FOR CONTROL THEREOF - An HVDC transmission system including a rectifier station and an inverter station each having a series connection of at least two converters. A by-pass DC breaker is connected in parallel with each converter. A control device is adapted to deblock a blocked converter by starting to control the converter at high delay angle and gradually decreasing the delay angle until substantially all DC current flows through the converter and to then control the by-pass breaker to open at substantially zero current, and to stop the operation of a converter by controlling the converter at gradually increasing delay angle until the voltage across the converter is substantially zero and to then control the converter to be blocked by firing a by-pass pair thereof and to then control the by-pass breaker to close for taking over all the DC current when the voltage between a neutral bus and a pole of a transmission line between the stations is to be increased and reduced, respectively. | 09-03-2009 |
20100053830 | METHOD AND APPARATUS FOR MITIGATION OF DYNAMIC OVERVOLTAGE - A method and apparatus for mitigating dynamic overvoltage (DOV) in an AC network. A distribution and power transformer has its primary connected to the high voltage bus of the network and its secondary connected to a switching device. Upon the occurrence of a condition known to cause a DOV and the DOV a control system cause the switching device to change from a nonconductive mode to a conductive mode in less than the time for one cycle of the operating frequency of the AC network. This change in switching device conduction places a short circuit across the transformer secondary. | 03-04-2010 |
20100150175 | POINT-TO-POINT COMMUNICATION IN A HIGH VOLTAGE POWER TRANSMISSION SYSTEM - A method for sending signals from an active computer in a high-voltage power transmission system including active protection computers and active and standby control computers in a hierarchical structure having at least two hierarchical levels. A high-voltage power transmission system and a control station for at least a part of such a transmission system. In the system all computers on the various hierarchical levels are connected to at least two separate computer communication networks. An active computer sends signals that are to be received by at least one other computer at the same or another hierarchical level simultaneously on the two separate computer communication networks to which it is connected. | 06-17-2010 |
20100157633 | REDUNDANT CURRENT VALVE CONTROL IN A HIGH VOLTAGE POWER TRANSMISSION SYSTEM - A method and device for providing redundant control of a controllable current valve in a converter of a power transmission system. A first converter control unit sends a first valve control signal. A first active/standby indicator is associated with the first converter. A second converter control unit sends a second valve control signal. A second active/standby indicator is associated with the second converter control unit. The device also includes a valve control unit. An active/standby indicator indicates if a corresponding converter control unit is active or standby. Only one indicator indicates an active unit at a given point in time. The valve control unit receives the active/standby indicators and valve control signals, selects a valve control signal to be applied if the corresponding active/standby indicator indicates an active converter control unit and controls the current valve using the selected valve control signal. | 06-24-2010 |
20100158001 | REDUNDANT COMPUTERS AND COMPUTER COMMUNICATION NETWORKS IN A HIGH-VOLTAGE POWER TRANSMISSION SYSTEM - A method for sending signals from an active computer in a high-voltage power transmission system including active protection computers and active and standby control computers in a hierarchical structure having at least two hierarchical levels. A high-voltage power transmission system and a control station for at least a part of such a transmission system. In the system all computers on the various hierarchical levels are connected to at least two separate computer communication networks. An active computer sends signals that are to be received by at least one other computer at the same or another hierarchical level simultaneously on the two separate computer communication networks to which it is connected. | 06-24-2010 |
20100244865 | VOLTAGE MEASUREMENTS OF ELECTRICALLY CONDUCTING ELEMENTS IN SYSTEMS FOR CONTROLLING ELECTRICAL PROCESSES - A voltage measurement device for connection to a primary voltage dividing element provided between ground and an electrically conducting element in a system for controlling an electrical process and such a system. The device includes at least one first branch of secondary voltage dividing elements, where the branch is adapted to be connected in parallel with the primary voltage dividing element, and a first measuring unit connected to one of the secondary voltage dividing elements of the first branch and arranged to measure the voltage across this secondary voltage dividing element and provide a first voltage signal corresponding to a voltage of the electrically conducting element. | 09-30-2010 |
20100289551 | INCREASED RELIABILITY IN THE PROCESSING OF DIGITAL SIGNALS - A method, device and computer program product for providing increased reliability in the processing of digital signals. The device includes a module for performing analog measurement of a received signal intended to occupy two logical states at various instances in time, a module for determining if there is a change in the analog signal level, a module for determining if the change fulfills at least one logical state change condition, wherein a first logical state change condition is based on the speed of change of the analog signal level, and a module for determining that there is a change from one logical state to the other if at least one logical state change condition is fulfilled. The invention provides secure detection of unreliable digital signals that may be generated in harsh environments that are polluted or moist. | 11-18-2010 |
20130021039 | FAULT WAVE ARRIVAL DETERMINATION - A method and apparatus for determining the time of arrival of a fault wave at a measurement point of a power transmission system includes a measurement unit measuring a power quantity of the system at the measurement point (P | 01-24-2013 |
20130181745 | DIGITAL INPUT WITH VARIABLE IMPEDANCE - A device for sensing a binary signal includes a device configured to measure a signal level of the signal, a device configured to determine whether the measured signal level is “low” or “high”, a device configured to provide a variable input impedance, and a device configured to control the input impedance in response to the measured signal level. The variable input impedance may be provided by way of a transistor and a resistor, and by controlling the duty ratio of the transistor using pulse width modulation. Preferably, the input impedance is controlled to be low for low signal levels and to be high for high signal levels, which results in a more reliable sensing of binary signals. The device may be used for detecting the state of contact transducers suffering from parasitic resistances caused by moist and/or polluted environments. Further, a method of sensing a binary signal is provided. | 07-18-2013 |
20130215556 | CONTROL ARRANGEMENT - A control arrangement for a circuit breaker station includes a central control system and, for each of the circuit breakers, a circuit breaker operating unit connected to the central control system to obtain switching instructions and to the respective circuit breaker to control the operation thereof. The central control system and the circuit breaker operating units each have a local clock that are synchronized with one another. The central control system is, during use, arranged to calculate a point of time for switching each of the circuit breakers based on measured voltages, currents, and circuit breaker positions, and to send the point of time in a switching instruction to the circuit breaker operating unit. Each of the circuit breaker operating units is arranged to switch the circuit breaker, to which it is connected, at the point of time which is received in the switching instruction from the central control system. | 08-22-2013 |
20150229229 | CONVERTER ARM AND ASSOCIATED CONVERTER DEVICE - It is presented a converter arm for power conversion. The converter arm comprises: a plurality of converter cells, wherein each converter cell comprises a plurality of semiconductor switches, an energy storage element and at least three control signal connections arranged to control the conducting state of the plurality of semiconductor switches. Each converter cell is connected to receive a control signal from at least three entities via said control signal connections, wherein at least two of the three entities are neighbouring converter cells, and each converter cell is arranged to forward a control signal to all connected neighbouring converter cells via said control signal connections. A corresponding converter device is also presented. | 08-13-2015 |
Patent application number | Description | Published |
20100314466 | THERMAL SPRAYING METHOD AND DEVICE - A thermal spraying device includes an arrangement for generating a flame and an arrangement for injecting a powder into the flame, the flame-generating means including an end piece out of an outlet of which the flame is directed towards a substrate subjected to spraying, and the powder-injection arrangement includes a frame element that projects in the flame ejection direction from the end piece, that at least partly surrounds a flame zone extending from the end piece, and that presents an inner circumference that is larger than the inner circumference of the outlet, and at least one powder port for the introduction of a powder to the flame being arranged on the inner periphery of the frame element at a distance from the outlet of the end piece as seen in the flame ejection direction. There is provided at least one gas injection opening in the frame element, the gas injection opening being located between the outlet of the end piece and the at least one powder port as seen in the flame ejection direction. | 12-16-2010 |
20100314467 | THERMAL SPRAYING METHOD AND DEVICE - A thermal spraying device includes an arrangement for generating a flame and an arrangement for injecting a powder into the flame, the flame-generating means including an end piece out of an outlet of which the flame is directed towards a substrate subjected to spraying, and the powder-injection arrangement includes a frame element that projects in the flame ejection direction from the end piece, that at least partly surrounds a flame zone extending from the end piece, and that presents an inner circumference that is larger than the inner circumference of the outlet, and at least one powder port for the introduction of a powder to the flame being arranged on the inner periphery of the frame element at a distance from the outlet of the end piece as seen in the flame ejection direction. There is provided at least one gas injection opening in the frame element, the gas injection opening being located between the outlet of the end piece and the at least one powder port as seen in the flame ejection direction. | 12-16-2010 |
Patent application number | Description | Published |
20100314466 | THERMAL SPRAYING METHOD AND DEVICE - A thermal spraying device includes an arrangement for generating a flame and an arrangement for injecting a powder into the flame, the flame-generating means including an end piece out of an outlet of which the flame is directed towards a substrate subjected to spraying, and the powder-injection arrangement includes a frame element that projects in the flame ejection direction from the end piece, that at least partly surrounds a flame zone extending from the end piece, and that presents an inner circumference that is larger than the inner circumference of the outlet, and at least one powder port for the introduction of a powder to the flame being arranged on the inner periphery of the frame element at a distance from the outlet of the end piece as seen in the flame ejection direction. There is provided at least one gas injection opening in the frame element, the gas injection opening being located between the outlet of the end piece and the at least one powder port as seen in the flame ejection direction. | 12-16-2010 |
20100314467 | THERMAL SPRAYING METHOD AND DEVICE - A thermal spraying device includes an arrangement for generating a flame and an arrangement for injecting a powder into the flame, the flame-generating means including an end piece out of an outlet of which the flame is directed towards a substrate subjected to spraying, and the powder-injection arrangement includes a frame element that projects in the flame ejection direction from the end piece, that at least partly surrounds a flame zone extending from the end piece, and that presents an inner circumference that is larger than the inner circumference of the outlet, and at least one powder port for the introduction of a powder to the flame being arranged on the inner periphery of the frame element at a distance from the outlet of the end piece as seen in the flame ejection direction. There is provided at least one gas injection opening in the frame element, the gas injection opening being located between the outlet of the end piece and the at least one powder port as seen in the flame ejection direction. | 12-16-2010 |