Resources Contact Us Home
Optical sensor device

Image Number 13 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
Constructing a cell-based cluster of data records of a scatter plot
Method and apparatus for automatic fluid shut-off
Screening machine
Articles containing chipless radio frequency identification elements
Leveraging RFID generated consumer behavior through a web map service
Method and system for large scale manufacture of thin film photovoltaic devices using multi-chamber configuration
Tapered single pole magnetic heads for perpendicular magnetic recording
  Randomly Featured Patents
Opening mechanism for umbrella-like intravascular shunt defect closure device
Flame- and smoke-resistant flexible polyurethane foam and a method for producing said foam
Well flow sampling system
Hollow structure panel for heat storage material and process for producing heat storage material panel using the same
Gravity-fed retail display hook
Thin liner layer providing reduced via resistance
Cart portion
Oral irrigating device
Logic simulator operable on level basis and on logic block basis on each level
Ethers of 4-halomethylpyridines