Patent ID: 7684016
Filing Date: 2010-03-23
Classification: G01S,H04N

Abstract:
1. A distance measuring system for measuring a distance from a person to an object using light, comprising: a sensing unit, the sensing unit comprising an optical sensing means for outputting measurement data that is a function of a distance from the sensing unit to an object; attachment means for mounting the sensing unit on the wrist or finger of a person; processing means for converting the measurement data outputted by the optical sensing means of the sensing unit into a user output signal; the processing means comprising adaptive filtering means for adjusting a response rate of the user output signal in response to the distance and/or change in distance from the sensing unit to an object indicated by the outputted measurement data of the sensing unit and/or in response to the variability of the outputted measurement data of the sensing unit; power source means for powering the distance measuring system; and a user output means that is an audio output means, a vibration output means, or an audio and vibration output means for coupling the user output signal to a person and making the person aware of an object in a nearby environment without a need for the person to grasp or hold the distance measuring system to be made aware of the object.