Signal Level Indicator Segmentation for Reference Matching

The indicator is divided into multiple segments (first indicator segment and second indicator segment) that can be independently controlled. The first segment lights up when the signal level is higher than the reference level, while the second segment lights up when the signal level is lower. This segmentation allows the user to see not only when adjustment is complete but also the direction and degree of difference, resolving the information loss problem.

The patent uses different lighting states (lit vs. unlit) of indicator segments to convey different information about the signal level relative to the reference level. By having the first indicator segment light up for high signal levels and the second segment light up for low signal levels, the system uses visual state changes to provide continuous feedback about the degree of difference, not just a binary match/mismatch indication.

The indicator serves multiple functions: it indicates when the signal level matches the reference level, shows when the signal level is higher than reference, and shows when the signal level is lower than reference. This multi-functional indicator replaces what would otherwise require multiple separate scales, providing comprehensive feedback while maintaining a simple front panel design.

Multiple indicator functions are merged into a single indicator structure with multiple segments. Instead of having separate scales for different signal level relationships, the patent combines all indication functions into one unified indicator that can display multiple states through its segments, simplifying the overall design while preserving all necessary information.