Which system stores echo reflection amplitudes as binary numbers and provides stability, uniformity, and accuracy compared to an analog converter?

Which system stores echo reflection amplitudes as binary numbers and provides stability, uniformity, and accuracy compared to an analog converter?

• A. Digital Scan Converter
• B. Analog Scan Converter
• C. Digital Memory
• D. Digital to Analog Converter

Answer: (A)

Storing echo amplitudes as binary numbers in the scan converter creates a digital representation of the image that is inherently stable and uniform. Each echo's brightness is mapped to a fixed digital value, so the grayscale levels are consistent from frame to frame and across the entire image. This digital approach resists drift, noise, and nonlinearity that affect analog storage, which means the image is more accurate and predictable in its brightness steps. In practice, the digital scan converter builds a pixel array by capturing the amplitudes and saving them as binary data, enabling precise grayscale mapping, easy post-processing, and reliable display performance. An analog scan converter, by contrast, stores information in an analog form and is more susceptible to drift and nonuniform brightness, leading to less consistent image quality. The digital-to-analog converter is involved later to convert those digital values back to voltages for the display, but the key factor described—storing echoes as binary numbers for stable, uniform, and accurate imaging—belongs to the digital scan converter.

Storing echo amplitudes as binary numbers in the scan converter creates a digital representation of the image that is inherently stable and uniform. Each echo's brightness is mapped to a fixed digital value, so the grayscale levels are consistent from frame to frame and across the entire image. This digital approach resists drift, noise, and nonlinearity that affect analog storage, which means the image is more accurate and predictable in its brightness steps.

In practice, the digital scan converter builds a pixel array by capturing the amplitudes and saving them as binary data, enabling precise grayscale mapping, easy post-processing, and reliable display performance. An analog scan converter, by contrast, stores information in an analog form and is more susceptible to drift and nonuniform brightness, leading to less consistent image quality. The digital-to-analog converter is involved later to convert those digital values back to voltages for the display, but the key factor described—storing echoes as binary numbers for stable, uniform, and accurate imaging—belongs to the digital scan converter.