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
Sensor coating
System and method for providing restrictions on the location of peer subnet manager (SM) instances in an infiniband (IB) network
Method and device for reducing image color noise
Node and wireless sensor network comprising the node
Method and apparatus for executing load distributed printing
Control method and allocation structure for flash memory device
  Randomly Featured Patents
Apparatus for continuously forming composite shapes
Efficient light coupler from off-chip to on-chip waveguides
Gathering of device discovery information
Substrate for a liquid crystal display panel, method of manufacturing the same and liquid crystal display device having the same
Bulk bin with replaceable cells
Method for matching the bit rate in a communication device, and a corresponding communication device
Valve position sensor
System for efficiently channeling high frequency data signals through sheet metal containment
Image processing apparatus which can update program
Systems and methods for determining a location of stations in a print shop