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










Image Number 13 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
Solid-state imaging apparatus and imaging system
Tri-material dual-species neutron spectrometer
Late loading rich media
Hepodxilin analog enantiomers
Hybrid interconnect scheme including aluminum metal line in low-k dielectric
Magnetic levitation motor used in lens module
Fast and compact circuit for bus inversion
  Randomly Featured Patents
Ratio discriminator
Liquid crystal display device, active matrix substrate, and electronic device
Watch case
Methods of production of novel molybdenum-sulfide dimers and reactions of the same
Fiber optic probe having fibers with endfaces formed for improved coupling efficiency and method using same
Building press
Preparation of stoichiometric titanium disulfide
Organic light emitting diode display
Synchronizing sequence numbers
Catheter capable of being equipped with micro biopsy tool