Method and system to enhance timing accuracy for...

Details Method and system to enhance timing accuracy for... Method and system to enhance timing accuracy for...

2007-11-30

2009-12-22

Tarcza, Thomas H (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S005100, C356S005150

Reexamination Certificate

active

07636150

ABSTRACT:
A method and system to enhance accuracy of measurement of distance Z in a TOF system dynamically provides tight control over the phase and/or timing relationship of clock pulses used in the TOF system. Enhanced frequency control is imposed over a high speed oscillator whose output(s) control a timing generator, whose outputs are coupled to circuitry associated with the detection array in the TOF system, and with the TOF clock timing circuitry. The timing generator is coupled to a delay locked loop (DLL) and/or phase lock loop (PLL), which loop(s) are feedback coupled to the waveform circuit that drives the source of electromagnetic energy emitted by the TOF system.

REFERENCES:
patent: 6462705 (2002-10-01), McEwan
patent: 7405812 (2008-07-01), Bamji

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