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
Azole derivatives, methods for producing the same, intermediate thereof, agro-horticultural agents
Dyes and methods of marking biological material
Turbulence sensor and blade condition sensor system
Self-assembling surface coating
Haloalky -substituted amides as insecticides and acaricides
Device for transmitting data between a serial data bus and working modules such as actuator modules and/or I/O modules
Stereoscopic display
  Randomly Featured Patents
Construction of new .alpha.-galactosidase producing yeast strains and the industrial application of these strains
Method for the non-mechanical conveying of a collected quantity of liquid and apparatus for the performance of the method
Theater design
Contact element
Film transport mechanism for camera
Container for use in anaerobic bacteriology
Three piece snap fit ejectable disc case
Slag control method and apparatus
Multiblock copolymer, method of preparing the same, polymer electrolyte membrane prepared from the multiblock copolymer, method of preparing the polymer electrolyte membrane, and fuel cell emp
Sheet-like light source device