Invention Grant
- Patent Title: Load-control backup signal generation circuit
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Application No.: US14622336Application Date: 2015-02-13
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Publication No.: US09639410B2Publication Date: 2017-05-02
- Inventor: Kazuhisa Wataru
- Applicant: Yazaki Corporation
- Applicant Address: JP Tokyo
- Assignee: Yazaki Corporation
- Current Assignee: Yazaki Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2014-027593 20140217
- Main IPC: G06F11/00
- IPC: G06F11/00 ; G06F11/07 ; G01R31/00 ; G06F11/16

Abstract:
In a case in which a malfunction occurs in a control processor which operates according to a predetermined program, a load-control backup signal generation circuit supplies a backup control signal to a switch of a load connected to an output of the control processor. The load-control backup signal generation circuit includes: a watchdog input terminal to which a watchdog signal periodically output from the control processor is input; a pulse count unit which counts a clock pulse generated with a constant period and which controls a count state of the clock pulse according to a signal input to the watchdog input terminal; and a signal selection unit which selects, from a plurality of options, a predetermined condition for causing a backup signal output unit to generate the backup control signal, based on a count output signal of a plurality of bits output from the pulse count unit.
Public/Granted literature
- US20150234696A1 LOAD-CONTROL BACKUP SIGNAL GENERATION CIRCUIT Public/Granted day:2015-08-20
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