Primary functional circuit board suitable for use in verifying chip function by alternative manner
US6947292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2003 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Apr 26, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10689
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A primary functional circuit board with the capability to verify the chip function by an alternative manner and a simplified design for reducing the fabrication cost includes circuit board, chip, verifying apparatus, and extending connection terminals distributed on periphery of the chip. The chip is disposed on the circuit board to execute a functional instruction of the primary functional circuit board. The extending connection terminals are the extension of connection pins of the chip. The verifying apparatus is implemented with a programmable chip having a firmware program needed for controlling the circuit under control. After the verifying apparatus is connected to the extending connection terminals, the switching device is used to select the chip or the programmable chip to control the circuit under control. The engineer can easily compare the difference between the two without a power interruption. The performance and the matching effect can be promptly known, and the desired product can be thereby developed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.