Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Memory module and an IC card










Image Number 5 for United States Patent #5838549.

In semiconductor modules having a plurality of semiconductor devices mounted on a multilayer printed circuit boards as the processing speed increases, a short circuit current flowing through CMOS devices in the semiconductor devices during operation can cause noise because of ground inductance or power supply inductance. This noise can result in erroneous operations. To solve this problem, the power supply layer or grand layer that is connected to either the power supply terminal Vcc or the ground terminal Gnd of each semiconductor memory, which is located farther from the connection terminals, is arranged closer to the semiconductor memories with this arrangement, the short circuit current flowing through the semiconductor memories is more strongly magnetically coupled with the power supply layer or ground layer arranged close to them. Thus, it is possible to reduce the effective inductance. This, in turn, reduces noise, making it possible to provide a semiconductor module with an increased processing speed.








 
 
  Recently Added Patents
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
Methods and compositions for improved F-18 labeling of proteins, peptides and other molecules
Composite materials comprising aggregate and an elastomeric composition
Solid-state imaging device and method for manufacturing the same
Device and method for controlling brightness of organic light emitting diode display
Method and apparatus for executing load distributed printing
Electronic device with a screen
  Randomly Featured Patents
Liquid crystal display device and method of fabricating the same
Paper feeding apparatus of image forming device
Substrate measuring method and apparatus
Short-chain polymeric yellow cyanoester-derivative colorants and articles comprising such colorants
Light emitting device and electronic equipment using the same
Motor brush spring subassembly
Pyrometer assembly having a heated viewing tube
Animal litter granules and method of processing peanut hulls in producing cat litter
Projection objective for immersion lithography
Method and apparatus for providing feeder cable insertion loss detection in a transmission system without interfering with normal operation