Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Restricting the damaging effects of software faults on test and configuration circuitry










Image Number 4 for United States Patent #6578166.

A system that restricts the damaging effects of software faults that interact with test and configuration circuitry. This test and configuration circuitry includes a scan chain in the form of a serial linkage between memory elements within a circuit, thereby allowing a test input to be serially shifted into the memory elements. The system operates by receiving a test disable signal at the circuit. In response to the test disable signal, the system moves the circuit into a test disable mode, which limits any damaging effects to the circuit caused by shifting the test input into the memory elements in the scan chain. Next, the system shifts the test input into the memory elements in the scan chain. T he system also determines whether the test input will cause damage to the circuit after the test input is completely shifted into the scan chain. If so, the system holds the circuit in the test disable mode so that the test input cannot damage the circuit. If not, the system moves the circuit out of test disable mode, and runs the circuit for at least one clock cycle in order to test the circuit.








 
 
  Recently Added Patents
Synthesis of amines and intermediates for the synthesis thereof
Vehicle inertial sensor systems
Mobile communication device
Data architecture and user interface for plasma processing related software applications
Machine tool with an electrical generator for passive power generation
Method and apparatus for disease diagnosis and screening using extremely low frequency electromagnetic fields
Portable device for treating insect bites and the like
  Randomly Featured Patents
Audio signal time scale modification
Step stool
Light measuring device
Inserting aid for optical discs having a special shape
Digital camera having composition determining operation for temporarily storing freeze image data representative of a composition
Radio communication transmitter
Pump spray bottle
Secure storage in file system
Coaxial illuminated laser endoscopic probe and active numerical aperture control
Interface and method for facilitating writing and modifying of lines of programming code