发明名称 |
Detection method of bus termination |
摘要 |
A system for detecting whether a bus used to connect units in an in-flight entertainment system is properly terminated. A detection circuit generates a bus termination signal when a terminating cap properly terminates the bus. Prior to installation of the terminating cap, a bus coupling contact of the detection circuit is maintained in a logic high or asserted state. A detection loop in the terminating cap grounds or deasserts the bus coupling contact when the terminating cap is properly installed. A microcontroller determines whether the bus coupling contact is grounded and signals a managing unit of the condition. The managing unit may display an appropriate error message to notify service personnel of the improper termination.
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申请公布号 |
US5939997(A) |
申请公布日期 |
1999.08.17 |
申请号 |
US19960739874 |
申请日期 |
1996.10.31 |
申请人 |
SONY CORPORATION;SONY TRANS COM INC. |
发明人 |
SEKINE, KAZUTOYO;LOTOCKY, DANIEL |
分类号 |
G06F13/40;(IPC1-7):H04N7/18 |
主分类号 |
G06F13/40 |
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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