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
Shape memory polymers formed by self-crosslinking of copolymers
System and method for organizing, processing and presenting information
Integrated emergency medical database system
Detection of code-based malware
Vehicle driving assistance apparatus
Multilevel directory assistance apparatus and method
Hydrothermal synthesis of nanocubes of sillenite type compounds for photovoltaic applications and solar energy conversion of carbon dioxide to fuels
  Randomly Featured Patents
Electrical power generation system utilizing an electrically superconductive coil
Search system, information processing apparatus, control method therefor, and program
Sunshade attachment
Functional operations for accessing and/or building interlocking trees datastores to enable their use with applications software
Method and transceiver apparatus for transmitting paging information in orthogonal frequency-division multiplexing systems
Ophthalmic apparatus
Image forming apparatus for copying a document by moving an exposure unit and for moving a document that is to be copied
Gray scale optical mark reader
Power fuse block
Method for manufacturing electronic parts