An apparatus accurately measures the time difference between two signal edges by optically detecting the emission from a "beacon device" that is modulated as a function of time difference. Through the use of this modulation it is possible to perform timing measurement accurately. Embodiments of a voltage modulator circuit modulate timing information into emission intensity. The method and system of the present invention can be used in applications such as clock skew and pulse width measurements.

 
Web www.patentalert.com

< Optical integrating chamber lighting using multiple color sources

< Image sensor packages

> Secure point of sale imageable substrate

> Optical inspection system and method of use

~ 00239