Resources Contact Us Home
Optical sensor device

Image Number 14 for United States Patent #8125620.

A method and apparatus for the acquisition of repetitive signals in a sensing device comprising a transmitter, a receiver and an object. The transmitter repetitively emits a modulated electro-magnetic signal into a transmission medium, with the emitted signal interacting with the object producing a counter propagating return signal. The return signal may contain properties that reflect all, or a portion, of the initial signal or may be correlated with said signal through a process of absorption and reemission, in which reflected signal characteristics are governed by the object's physical material characteristic. The return signal is detected and converted into digital signals by a receiver via a reception channel through the use of edge transitions rather than logic levels from one or more comparator outputs to reconstruct the return signal waveform. A several waveform acquisition and reconstruction methods are disclosed for use with an edge sampling detection apparatus. When directed towards the time-of-flight distance measurement the invention also discloses a useful method to provide optical feedback using a moving waveguide.

  Recently Added Patents
Agents for preventing and treating disorders involving modulation of the ryanodine receptors
System and method for multi-threaded OFDM channel equalizer
Hybrid asynchronous transmission process
Ni-, Co-, and Mn- multi-element doped positive electrode material for lithium battery and its preparation method
Process for producing .beta.-sialon fluorescent material
Hydroxyl-terminated thiocarbonate containing compounds, polymers, and copolymers, and polyurethanes and urethane acrylics made therefrom
Fibrous laminate interface for security coatings
  Randomly Featured Patents
Method of producing a tubing for use as a flow conduit
Yieldably extensible self-retracting shielded cable
Fischer-tropsch process
Damper mechanism
Apparatus and method for online data migration with remote copy
Electrical stimulation therapy to promote gastric distention for obesity management
Vertical laser cavity with a non-planar top mirror
Tape cartridge
Non-aqueous electrolyte secondary battery
Adaptive thermal shutdown circuit