发明名称 |
System and method for port testing and configuration |
摘要 |
An electronic module for use in a printer consumable unit comprises a first input and output (I/O) port adapted connected to an external contact, and a second I/O port connected to the external contact. Circuitry controls the electronic module and responds to read memory commands and write memory commands received through the external contact on the I/O ports. A memory stores data. A third port is connected to the external contact and adapted to source current. The circuitry is initially configured to send and receive data through the first I/O port. The circuitry tests the functionality of the first I/O port by directing the third port to source current and drive the external contact to a predetermined voltage, and read a voltage received by the first I/O port in response to sourced current. If the circuitry determines the first I/O port is not functioning correctly based on the read voltage, the circuitry will send and receive data through the second I/O port.
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申请公布号 |
US2005036795(A1) |
申请公布日期 |
2005.02.17 |
申请号 |
US20040780988 |
申请日期 |
2004.02.18 |
申请人 |
KARAGIANNIS ANTONIOS L.;REEVES MARK D.;BURCHETTE LYNTON R. |
发明人 |
KARAGIANNIS ANTONIOS L.;REEVES MARK D.;BURCHETTE LYNTON R. |
分类号 |
G03G15/08;(IPC1-7):G03G15/08 |
主分类号 |
G03G15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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