Ultrasonic Interpolation Memory Segmentation
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Solution Overview
Problem
Conventional ultrasonic diagnostic apparatuses face challenges in accurately interpolating reception data for fine adjustment of delay times, leading to potential image quality deterioration due to the need for increased sampling intervals to accommodate data gaps, which restricts the ability to concurrently and collectively acquire necessary data for interpolation.
Innovation Solution
The ultrasonic diagnostic apparatus employs a memory configuration that allows concurrent and collective retrieval of reception data, enabling interpolation without increasing the sampling interval by dividing and storing data in a manner that allows for simultaneous access to necessary sampling points, thereby facilitating accurate interpolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sampling interval is increased to accommodate data gaps in conventional FIR filter interpolation, then it becomes possible to calculate interpolation data within the range of sampling data read into the FIR filter, but image quality deteriorates
Solution Approach 1:
The patent segments the reception data storage into multiple FIFO memories (first FIFO memory and second FIFO memory) with different sampling intervals. This segmentation allows the system to read data at appropriate intervals from different memory regions, enabling interpolation calculation without forcing a uniform increase in the overall sampling interval, thereby maintaining image quality while making interpolation feasible.
2Ease of operation
If data is stored in time series order in FIFO memory, then data can be read sequentially, but necessary data cannot be read when pieces of data to be interpolated are spaced apart by one or more sampling points
Solution Approach 1:
The patent divides the reception data storage into multiple FIFO memories (first FIFO memory for data at first sampling interval, second FIFO memory for data at second sampling interval). This segmentation enables the system to selectively read data at different intervals from appropriate memory regions, providing the versatility to acquire necessary interpolation data even when data points are spaced apart, while maintaining sequential reading simplicity within each FIFO memory.
Data Source
AI summary
According to one embodiment, an ultrasonic diagnostic apparatus includes at least a memory circuitry, a processing circuitry, a data interpolation circuitry, and an image generating circuitry. The memory circuitry stores a plurality of pieces of reception data in an order of reception, the plurality of pieces of reception data being received continuously in a time series by a plurality of transducers, and specifies reading positions in an order different from the order of reception. The processing circuitry calculates a delay time, and calculates, based on the delay time, reading positions for acquiring reception data being used for calculating interpolation data from the memory circuitry. The data interpolation circuitry calculates interpolating data based on the plurality of pieces of reception data acquired from the calculated reading positions of the memory circuitry. The image generating circuitry generates an ultrasonic image based on a reception beam formed by using the interpolation data.