摘要:
A system has at least one bus, a central processing unit (CPU) coupled with the bus, a memory coupled with the bus, a direct memory access (DMA) controller having a plurality of DMA channels and operating independently from the CPU and being coupled with the bus, wherein for access to the bus the DMA controller is programmable in a first mode to have priority over the CPU and in a second mode in which at least one DMA channel of the DMA controller is suspended from accessing the bus.
摘要:
A system has at least one bus, a central processing unit (CPU) coupled with the bus, a memory coupled with the bus, a direct memory access (DMA) controller having a plurality of DMA channels and operating independently from the CPU and being coupled with the bus, wherein for access to the bus the DMA controller is programmable in a first mode to have priority over the CPU and in a second mode in which at least one DMA channel of the DMA controller is suspended from accessing the bus.
摘要:
Methods and apparatus provide realistic training in endovascular and endoluminal procedures. One embodiment includes modeling accurately the tubular anatomy of a patient to enable optimized simulation. One embodiment includes simulating the interaction between a flexible device and the anatomy and optimizing the computation. One embodiment includes replicating the functionality of therapeutic devices, e.g. stents, and simulating their interaction with anatomy. One embodiment includes computing hemodynamics inside the vascular model. One embodiment includes reproducing visual feedback, using synthetic X-ray imaging and/or or visible light rendering. One embodiment includes generating contrast agent injection and propagation through a tubular network. One embodiment includes reproducing aspects of the physical environment of an operating room by simulating or tracking, such as C-arm control panel, foot pedals, monitors, real catheters and guidewires, etc. One embodiment includes tracking instrument position and mimicking haptic feedback experienced when manipulating certain medical devices.
摘要:
A microcontroller may have a central processing unit (CPU); a programmable logic device receiving input signals and having input/outputs coupled with external pins, and an interrupt control unit receiving at least one of the internal input signals or being coupled with at least one of the input/outputs and generating an interrupt signal fed to the CPU.
摘要:
A direct memory access (DMA) controller may comprise a DMA bus, a memory coupled to the DMA bus, a DMA engine coupled with the DMA bus, a cyclic redundancy check (CRC) module coupled with the DMA engine, and a bus interface coupled to the DMA engine and the CRC module.
摘要:
A method of performing a direct memory access has the steps of selecting a peripheral device for performing a direct memory access through a direct memory access controller; providing a partial address by the peripheral device to the direct memory access controller; and forming the source or destination address by combining the partial address with selected bits from a source register within the direct memory access controller.
摘要:
In one embodiment, the present invention is a method and apparatus for identifying wireless transmitters. In one embodiment, a method for identifying a transmitter in a wireless computing network includes extracting one or more radio frequency signal characteristics from a communication from the transmitter and generating a fingerprint of the transmitter in accordance at least one of the extracted radio frequency signal characteristics.
摘要:
A surgical training system includes a tracking system for tracking the position of one or more instruments during a training procedure and objectively evaluating trainee performance based upon one or more metrics using the instrument position information. Instrument position information for the training procedure can be compared against instrument position information for an expert group to generate standardized scores. Various training object can provide realistic haptic feedback during the training procedures.
摘要:
A microcontroller may have a central processing unit (CPU); a programmable logic device receiving input signals and having input/outputs coupled with external pins, and an interrupt control unit receiving at least one of the internal input signals or being coupled with at least one of the input/outputs and generating an interrupt signal fed to the CPU.
摘要:
A method of performing a direct memory access has the steps of selecting a peripheral device for performing a direct memory access through a direct memory access controller; providing a partial address by the peripheral device to the direct memory access controller; and forming the source or destination address by combining the partial address with selected bits from a source register within the direct memory access controller.