Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Absolute optical encoder system










Image Number 12 for United States Patent #4445110.

An optical code disc includes a fine track which provides a high resolution signal, at least one V scan natural binary track synchronized to the fine track by lead and lag detectors, and Gray code tracks which provide the most significant bits of the digital output of the encoder system. The number of circuit elements in the multiplier circuitry associated with the fine track are reduced by means of a quadrant switching technique whereby the sinusoidal inputs to the multiplier are repeated through each quadrant of the fine track cycle. The V scan and Gray code tracks are optically multiplexed to reduce the number of leads from the optical detector. The use of both V scan and Gray code tracks minimizes the number of detectors required in the system while maintaining large detector signals from each track. The V scan and Gray code outputs are synchronized by the use of an overlapping bit.








 
 
  Recently Added Patents
Cooling method and device for cooling a medium-voltage electrical installation in a protective sheath
Method and system for network configuration for virtual machines
Data communication apparatus, method of controlling the same, program, and storage medium
Electric motor
Method and device for extracting vapors in an injection molding machine
Progressively discovering and integrating services
Semiconductor device and manufacturing method thereof
  Randomly Featured Patents
AAV5 vector for transducing brain cells and lung cells
Wedge cam lock washer for threaded fasteners
Grinding structure having micro ball
Pumped flow attrition disk zone
Apparatus for removing pins from connecting link boat hardware
Method for measuring strength of image forming surface of planographic printing plate, planographic printing plate and packaging structure for planographic printing plates
Imaging system with enlarged depth of field
Panel mounting connector
Aquarium or the like
Word spotting in a speech recognition system without predetermined endpoint detection