Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Reducing programming voltage differential nonlinearity in non-volatile storage










Image Number 16 for United States Patent #7577034.

A corrective action is taken to adjust for nonlinearities in a program voltage which is applied to a selected word line in a memory device. The nonlinearities result in a non-uniform program voltage step size which can cause over programming or slow programming. A digital to analog converter (DAC) which provides the program voltages can have a nonlinear output, such as when certain code words are input to the DAC. The memory device can be tested beforehand to determine where the nonlinearities occur, and configured to take corrective action when the corresponding code words are input. For example, the DAC may have a nonlinear output when a rollover code word is input, e.g., a when a string of least significant bits in successive code words change from 1's to 0's. The corrective action can include repeating a prior program pulse or adjusting a duration of a program pulse.








 
 
  Recently Added Patents
System and method for generating profile morphing using cephalometric tracing data
Liquid crystal display apparatus
Optical imaging device and imaging method for microscopy
Correcting color plate data for mis-registration in a sub-scanning direction by performing a pixel transition at the transition point aligned in the main-scanning direction
Integrating map-reduce into a distributed relational database
Method and a system for registering a 3D pre-acquired image coordinates system with a medical positioning system coordinate system and with a 2D image coordinate system
Multistable electromagnetic actuators
  Randomly Featured Patents
Switching regulator
Method and system for paging mobile devices
Control device for use with a drawing output unit
Cable end structure for pull-cable
Image processing apparatus
Inhibitor for gas conditioning solutions
Image processing apparatus and method of controlling the same
Releasable push-to-connect tube fitting
Ab initio generation of single copy genomic probes
Pacifier