External debug card sharing a communication bus
US6715110B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2000 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2268
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A debug card suitable for use with a data processing system is disclosed. The card includes a microcontroller, a storage device connected to the microcontroller; and, connected to the microcontroller, means for tapping into a communication bus of the data processing system where the bus communicates information between a processor of the data processing system and a display panel. The microcontroller is configured to record the information received by the display panel from the processor in the storage device when the debug card is connected to the communication bus. In one embodiment, the communication bus and the microcontroller are I2C compliant. In this embodiment, the debug card may have its own I2C address thereby enabling the debug card to communicate with the processor. The debug card may further include a serial port connected to the microcontroller. The serial port enables downloading the information stored in the storage device to an external computer. In addition, a user of the external computer may send commands to the data processing system through the serial port to customize the debug session. The debug card may further include a non-volatile storage device containi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.