Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Delay locked loop for use in semiconductor memory device










Image Number 3 for United States Patent #6434062.

It is provided a delay locked loop for obtaining a reduced jitter and a stable time delay adjustment to thereby perform a bi-directional time delay with a small area even at low frequency applications. The delay locked loop includes an input unit for receiving a clock signal and a non-clock signal and comparing received signals to produce an internal clock signal, a controller for receiving the internal clock to produce a control signal, a bi-directional oscillator, responsive to the control signal from the control means, for performing a ring oscillation in a first or second direction and fulfilling an addition and subtraction adjustment function for a time delay, a counter for receiving an output signal of the bi-directional oscillator and counting the number that the signal is passed therethrough, and an AND gate for performing a combination operation on the outputs of the bi-directional oscillating means and the counting means, to produce the result as a final internal clock signal.








 
 
  Recently Added Patents
Location-based method to specify ratio frequency spectrum rights
Expandable mobile device
Multilayer films having reduced curling
Method for releasing a locking in mobile terminal and mobile terminal using the same
Printable and printed articles
Communication apparatus and communication system
Method of inspecting wafer
  Randomly Featured Patents
Electron microscope device
Screwdriver
Computer-based communication systems and arrangements associated therewith for indicating user status
Carrier sheets of paper and nitrocellulose bearing polyuridylic acid and polythymidylic acid residues and their use in the preparative recovery of MRNA
Apparatus and method to monitor the relative position of a tape medium disposed in a tape drive
Process for the production of fuel compositions
Garbage can
Microemulsion of water in a liquid fuel
Extracting cobalt from aqueous solutions containing nickel with mono-ester of benzylphosphonic acid
Joints and structures incorporating same