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Electronic control device with watchdog timer and processing unit to diagnose malfunction of watchdog timer
US8996927B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8996927-B2 |
| Application number | US-201213613199-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 13, 2012 |
| Priority date | Sep 14, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
An electronic control device includes: a processing unit that performs a predetermined process in accordance with a program; a watchdog timer that includes a time counter reset by a pulse signal output at a given period from the processing unit and outputs a signal having levels inverted depending on whether an overflow occurs; and a latch circuit that latches the signal output from the watchdog timer and outputs a signal obtained through the latching as a first output enable signal. The processing unit stops the output of the pulse signal, when diagnosing a malfunction of the watchdog timer, and diagnoses the malfunction of the watchdog timer based on the first output enable signal output from the latch circuit, after stopping the output of the pulse signal.
First claim
Opening claim text (preview).
What is claimed is: 1. An electronic control device comprising: a processing unit that performs a predetermined process in accordance with a program; a watchdog timer that includes a time counter reset by a pulse signal output at a given period from the processing unit and outputs a signal having levels inverted depending on whether an overflow occurs; a latch circuit that latches the signal output from the watchdog timer and outputs a signal obtained through the latching as a…
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Electricity · mapped topic
Electricity · mapped topic
- G06F11/0757Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8996927B2 cover?
- An electronic control device includes: a processing unit that performs a predetermined process in accordance with a program; a watchdog timer that includes a time counter reset by a pulse signal output at a given period from the processing unit and outputs a signal having levels inverted depending on whether an overflow occurs; and a latch circuit that latches the signal output from the watchdo…
- Who is the assignee on this patent?
- Yoshikawa Taku, Yamada Takeshi, Daibo Shinichi, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G06F11/0757. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).