摘要:
Acoustic diodes, devices incorporating such diodes; and methods of using such devices are disclosed. An acoustic diode may include a periodic acoustic grating and a uniform plate. The periodic acoustic grating may include a plurality of .gratings. The uniform plate may foe separated from-the periodic acoustic-grating by a resonant cavity. The acoustic diode may be configured to have a first transmission, efficiency for acoustic waves incident on the periodic acoustic grating that is greater than a second transmission efficiency for acoustic waves incident on the uniform plate. The acoustic waves may have a. wavelength within a range of wavelengths. Devices incorporating the acoustic diode may include medical imaging devices, such as ultrasound devices, and noise reduction devices.
摘要:
In various embodiments, a memory cell and a memory are provided. The memory cell comprises a Static Random Access Memory (SRAM) cell including a reset-set (RS) flip-flop and a Read Only Memory (ROM) cell being connected (or coupled) to the SRAM cell to set logic states of internal latch nodes of the RS flip-flop when the ROM cell is triggered. The size of the memory cells proposed in an embodiment of the invention is much smaller than the sum of the size of ROM cells and the size of SRAM cells with the capacity of the memory cells same as the sum of the capacity of the ROM cells and the capacity of the SRAM cells.
摘要:
A diagnostic ultrasound image of a region of interest (ROI) of a body is formed by transmitting into the ROI at least a first and a second ultrasound pulse, in which the second pulse is phase-shifted relative to the first pulse by an amount other than 0 or 180 degrees. Discretized receive signals from the pulses are interleaved to form a resultant operating signal that is detected and beamformed as the operating signal.
摘要:
A permanent magnet electric motor includes a rotor and a stator magnetically coupled to the rotor. The rotor includes a shaft, a rotor core fixed to the shaft and having n teeth, n being an integer, a commutator fixed to the shaft adjacent the rotor core and having m segments, m being an even number less than n. Rotor windings are wound about the teeth and connected to the segments. The stator includes a plurality of permanent magnets surrounding the rotor core and brushes in sliding electrical contact with the commutator.
摘要:
A system and method are described whereby interoperability is facilitated in a 3GPP network environment in combination with DIAMETER policy controls. Such interoperability enables updated policy rules to be fully communicated in on-line charging situations where quota expirations occur. This invention maintains centralized policy control in a 3GPP network with on-line charging.
摘要:
A brush motor includes a stator with 2P magnetic poles and a rotor which includes a rotor core, a commutator and windings wound on the rotor core. The rotor core includes N teeth with a slot formed between adjacent teeth. The commutator includes M segments represented by Z1 . . . ZX . . . ZY . . . ZM, wherein M, N, P, Y and X are integers and M is odd and greater than N. Each winding includes a start connected to a segment ZX and an end connected to another segment ZY. Each winding includes at least one coil wound about a corresponding tooth or set of teeth. Some of the windings include a plurality of coils wound on different teeth. The total number of turns of the coils for each winding is substantially the same. A winding unit consisting of a plurality of windings is connected between each pair of adjacent segments. ZX and ZY satisfy the following equation: |Y−X|=(M±1)/P.
摘要:
A method and system for processing Doppler signal gaps is disclosed. The method comprising the steps of: receiving Doppler signals during Doppler signal acquisition to obtain data of in-phase (I) component and quadrate (Q) component signals of the Doppler signals; receiving interruption of the Doppler signals; estimating the data of the Doppler signals interrupted in said gap period filling the interrupted Doppler signals with the data of the estimated Doppler signals so that the data of the I and Q component signals in said gap period are filled to form a continuous output; and generating Doppler spectrum data or Doppler sound based on the data of the filled I and Q component signals.
摘要:
Provided is a method for processing input data in a storage system and in communication with a repository. Views are generated that comprise a tree of nodes selected from a subset of nodes in a hierarchical representation of a schema. The views are saved to the repository. At least one of the views are used to create a job comprising a sequence of data transformation steps to transform the input data described by input schemas to the output data described by output schemas.
摘要:
An electric motor includes a stator and a rotor installed in the stator. The stator has a laminated stator core and at least two stator windings wound on the stator core. The stator core has at least two stator poles facing the rotor and at least two yokes connecting adjacent stator poles. T stator core is constituted by at least two separate members joined together. The at least two stator poles are only arranged at a single one of the at least two separate members.
摘要:
An mmode imaging method and apparatus for an ultrasonic diagnostic device is provided to increase the continuity of displayed mmode images. An mmode imaging method performed by an ultrasonic diagnosis device selects sample points on frames of bmode images, converts bmode data of the sample points obtained from the frames of bmode images into converted mmode data, produces interpolated mmode data based on the echo data of corresponding sample points on at least two different frames, and images at least a portion of the mmode data in time sequence.