Broadly speaking, time-of-flight technology can be understood as a technology to further understand some properties of ions or media by measuring the time required for objects, particles or waves to fly a certain distance in a fixed medium (the medium/distance/time are both known or measurable).
ToF ranging method has two key limitations:
First, the sending device and the receiving device must always be synchronized; The second is the transmission time of the signal provided by the receiving device. In order to achieve clock synchronization, ToF ranging method uses clock offset to solve the clock synchronization problem.
ISL 29501+0, the latest ToF signal processing IC introduced by Intersil, is a typical ToF scheme, which can be used in all lighting conditions, achieving miniaturization and low power consumption in battery applications. Because the signal processor technology patented by Intersil uses phase-based ToF to deal with the influence of ambient light around the detection object.