发明名称 |
Self-test routine and circuit for LED display |
摘要 |
A method and apparatus for operating and executing a self-test routine of an LED display device adapted for assembly into home appliance. The device is comprised of a plurality of LED elements, a control processor, a switch assembly, and a signaling element. The self-test routine comprises disposing the switch assembly in a predetermined pattern for detecting switch operability and initiating a program in the processor for self-testing of illumination of the LED elements. The elements are monitored during the self-test routine for communicating a minimum current level preselected as identifying proper illumination. Failure of the self-test routine to properly detect minimum current levels precludes a proper response from the signaling element within a predetermined time limit, thereby causing the display device to be identified as an unacceptable device.
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申请公布号 |
US6028441(A) |
申请公布日期 |
2000.02.22 |
申请号 |
US19970911331 |
申请日期 |
1997.08.14 |
申请人 |
ALVORD, ROBERT J.;JENSKI, LEONARD W. |
发明人 |
ALVORD, ROBERT J.;JENSKI, LEONARD W. |
分类号 |
G09G3/00;(IPC1-7):G01R31/00 |
主分类号 |
G09G3/00 |
代理机构 |
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