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 6 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
Movable assemblies for an image reader unit and a cover unit in an image formation apparatus
Coated article and method for making the same
High-speed comparator with asymmetric frequency response
Digital fine delay processing
Fluid handling structure, a lithographic apparatus and a device manufacturing method
Multiple RF band operation in mobile devices
Key management using quasi out of band authentication architecture
  Randomly Featured Patents
Delta-sigma modulator with two-step quantization, and method for using two-step quantization in delta-sigma modulation
DRDW differential phase tracking method and apparatus
Backplane structure for a computer superpositioning scalar and vector operations
High speed computer system for search and retrieval of data within text and record oriented files
Apparatus, system and method for flexibly coupling sensors to a downhole tool
Automatic pitching machine
Microwave load in small-length oversized waveguide form
Snap open tote container assembly
Treatment of weighted drilling mud
Control of recausticizing system operation by IR spectroscopys