Three dimensional image sensor
AssigneeSamsung Electronics Co., Ltd.
InventorsKyoung Lae Cho, Seung Hoon Lee, Dong Ki Min
Life of this patent
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Abstract
A depth sensor includes a light source, a detector, and a signal processor. The light source transmits a source signal to the target according to a transmit control signal having reference time points. The detector receives a reflected signal from the source signal being reflected from the target. The signal processor generates a plurality of sensed values by measuring respective portions of the reflected signal during respective time periods with different time delays from the reference time points. The signal processor determines a respective delay time for a maximum/minimum of the sensed values for determining the distance of the target.
Claims24
A method for measuring a distance from a target, comprising:
- transmitting a source signal to the target according to a transmit control signal having reference time points;
- receiving a reflected signal from the source signal being reflected from the target;
- and
- generating a plurality of sensed values by measuring respective portions of the reflected signal during respective time periods with different time delays from said reference time points.
A method for measuring a distance from a target, comprising:
- transmitting a source signal to the target;
- receiving a reflected signal from the source signal being reflected from the target;
- generating a plurality of sensed values by measuring respective portions of the reflected signal;
- and
- determining the distance from the target according to when a rate of change of the sensed values varies.
A depth sensor comprising:
- a light source for transmitting a source signal to the target according to a transmit control signal having reference time points;
- a detector for receiving a reflected signal from the source signal being reflected from the target;
- and
- a signal processor for generating a plurality of sensed values by measuring respective portions of the reflected signal during respective time periods with different time delays from said reference time points.
A depth sensor comprising:
- a light source for transmitting a source signal to the target;
- a detector for receiving a reflected signal from the source signal being reflected from the target;
- and
- a signal processor for generating a plurality of sensed values by measuring respective portions of the reflected signal, and for determining the distance from the target according to when a rate of change of the sensed values varies.
Dependencies are inferred from the claim text.