5 - 24 WS80A Service Manual
• PCI-express Interface
• BW Data Processing
• Spectral Doppler Data Processing
• Color Doppler Data Processing
• Motion Data Processing
• Digital Signal Processing (Pre Processing, Post Processing)
• Direct Memory Access
• Sound Control(Doppler, PC Wave) - 4CH Sound System(2CH Twitter, 2CH Woofer)
▌ Operational Principles of DSP Part
Image Data Processing in BW Mode and M Mode
RF Data generated by the BF Board is entered as FPGA Input.
The entered RF Data is converted into computable RF Data at FPGA Input, and then
entered as the input for ASIC (MCB028A).
ASIC(MCB028A) generates BW mode Image Data (hereinafter, BW Data) and sends it to
FPGA.
ASIC(MCB028A) creates BW Data and processes FSI (Full Spectrum Image), Spatial
Compound Imaging (SCI), Trapezoidal imaging, Synthetic aperture, and more.
To generate BW Data, it receives RF Data input and go through the process of DTGC
(Digital Time Gain Compensation), Decimation, Quadrature mixer, Envelope detection,
Log compression and several filtering.
The BW Date created from ASIC (MCB028A) is entered into FPGA again. It goes through
FSI (Full Spectrum Image) and Lateral filter to remove Multibeam artifact and the final BW
Date is sent to FPGA.
Note that the BW Data can be used as Motion mode Image Data.
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