This block diagram represents a typical ALS/Prox sensor. 2. Different light types ... proximity in small areas as well as in handheld and wearable devices. This capability also is useful in ...

Figure 2. Wearable piezoelectric blood pressure sensor (WPBPS) mounted on a watch (a) Schematic design of the WPBPS-embedded wristwatch. (b) Block diagram of the wireless communication circuit ...