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










Image Number 2 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
Secure service for enabling communication for calling party when communication service for called party is suspended
Data unit receiver and sender control method
Representing polarized light in computer models
Storage system comprising multiple microprocessors and method for sharing processing in this storage system
Ionic compound, anti-static pressure-sensitive adhesive and polarizer comprising the same
Credit flow control scheme in a router with flexible link widths utilizing minimal storage
Forklift
  Randomly Featured Patents
Yttria-based refractory composition
4,5-Dihydro-6-[(substituted)-1H-imidazol-4-yl or 5-yl]-3(2H)-pyridazinones and 6-[(substituted)-1H-imidazol-4-yl or 5-yl]-3(2H)-pyridazinones
Instrument panel seamless air bag cover
Apparatus and method for the extracorporeal treatment of the blood of a patient having a medical condition
Apparatus for securing a spherical body to a supporting member
Sprayer system
Polycyclic aminopyridine compounds which are acetylcholinesterase inhibitors, process for preparing them and their use
Golf swing training device for detecting correct weight shift
Video display appliance including a device for eliminating electric field emitted from a cathode ray tube
Selective conversion of methanol to low molecular weight olefins over high silica SSZ-13 zeolite