Chapter 5. Product Structure 5 – 7
5.3. Basic Structure of the Product
This product consists of the Ultrasound System Part and the User Interface Part. In the aspect
of electronic structure, it consists of a Front End Part, a Back End Part, a User Interface Part,
and a Power Part. The electronic structure of HS40 can be explained as follows:
5.3.1. Electronic Structure
• Front End Part
It consists of the PSA (Probe Select Assembly) and the BF (Beamformer). The Front End
Part delivers High Voltage Pulser to the probe to generate ultrasonic waves and amplifies the
returning echo signal to process Digital Beamforming. The RF signal generated here is sent
to the Back End Part.
• Back End Part
It consists of the BE (Back End) of the Ultrasound System Part as well as the PC Module.
Raw data required to make diagnostic images (e.g. BW, Color Doppler, PW Doppler, and
CW Doppler) from the RF signal generated by the BF (Beamformer) go through image
processing in form of a DMA Packet by BE (Back End) and are trans ferred to the P C Module.
Then, the data is displayed on-screen via several steps of post-processing conducted by the
PC Module. Images can be more clearly shown through the use of new technologies such as
MultiVision and ClearVision.
• User Interface Part
It consists of an LED monitor, control panel, and touch screen.
• Power Part
It takes AC voltage and supplies AC power to ADM and AUX Output via a circuit breaker. The
ADM converts AC power to DC power and supplies voltage to the board of Ultrasound
System as well as the PC Module.
5.3.2. Ultrasound System Part
It processes ultrasound data up to the stage before SW Post Image Processing. This detects
probes and performs TX Focusing and RX Focusing based on the system and application
information sent by the Host in accordance with the user environment. When a high voltage
Pulser is sent to the probe according to TX Focusing, ultrasonic waves are generated. Echo
signals returning from the body due to the ultrasonic waves go through amplification and the
ADC as part of the Digital Beamforming process. The RF signal obtained here goes through
various filtering and processing to generate I/Q signals such as BW, Color Doppler, PW Doppler,
CW Doppler, and Power Doppler, which are sent to the PC Part to generate image signals via
SW Post Image Processing.
The AC to DC Power Module supplies power to the Ultrasound System Part.
The Ultrasound System Part consists of the following:
• PSA (Probe Select Assembly) Board
• BF (Beamformer) Board
• BE (Back End) Board
• ADM (AC to DC Power Module)
To Next Page