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
Method of fabricating solid electrolytic capacitor and solid electrolytic capacitor
Method for conformal plasma immersed ion implantation assisted by atomic layer deposition
Tetrazolyl oxime derivative, salt thereof, and plant disease control agent
Image capture system and method
Semiconductor device and method of manufacturing the same
Methods of producing the membranes and the uses of membranes as battery separator films
Methods and compositions for inhibition of neutrophil exocytosis
  Randomly Featured Patents
Automatic labeling machine, for containers in the form of mesh bags or the like
Quinoline compounds
Method and apparatus for efficiently computing symmetric sequence signals in a three phase power system
Portable intrusion alarm
Vacuum casting machine
Synthetic fiber rope for an elevator
Head assembly, head suspension assembly, and disk device provided with head assembly
Respirator mask
Method for manufacturing a foam core heat exchanger
Secure data parser method and system