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
Method for producing SOI substrate and SOI substrate
Weak acid recovery system for ethanol separation processes
Porous polymeric resins
Visibility radio cap and network
Protecting information written to recording medium
Methods of making a diagnostic device by interweaving hydrophobic and hydrophilic fibers, and diagnostic device therefrom
Method and apparatus for content-aware resizing of data chunks for replication
  Randomly Featured Patents
2-Cyano-4-(2-hydroxy-3-substituted-aminopropoxy) indoles
Automatic replenisher system for a photographic processor
Storage unit subsystem
Infant mobile
Methods and systems for managing bragbook images
Charge/discharge control device for secondary battery and hybrid vehicle using the same
Organic LED and manufacturing method thereof
Door assembly for laminar flow control system
Laser driver for an optical recording system
Illuminator controlled tone reversal printing