Blood Flow Analysis Device Using Visible Light Imaging

The patent applies multi-functionality by enabling a single image acquisition device to perform multiple detection functions. The system extracts not only blood flow information but also heartbeat timing and pulse wave timing from the same optical characteristic changes in skin images, eliminating the need for separate sensors for each measurement type.

The patent combines multiple measurement functions into a unified system. By processing optical characteristic changes from skin images, the system simultaneously obtains blood flow amplitude, blood flow timing, heartbeat timing, and pulse wave timing, merging what would traditionally require separate sensors into one integrated solution.

The patent applies preliminary action by extracting multiple types of biological information simultaneously from the same optical characteristic changes rather than sequentially measuring each parameter. This allows the system to obtain blood flow, heartbeat, and pulse wave information within a single measurement cycle, eliminating the need to extend measurement time to capture complete cycles of each parameter.

The patent maintains continuous useful action by processing optical characteristic changes continuously to extract multiple information types. The system continuously monitors skin images and simultaneously derives blood flow amplitude, timing, heartbeat timing, and pulse wave timing from the same continuous data stream, maximizing information extraction within the measurement period.