Invention Grant
- Patent Title: Switch detection device and method of use
- Patent Title (中): 开关检测装置及使用方法
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Application No.: US14152262Application Date: 2014-01-10
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Publication No.: US09329237B2Publication Date: 2016-05-03
- Inventor: William E. Edwards , Anthony F. Andresen , Randall C. Gray
- Applicant: Freescale Semiconductor, Inc.
- Applicant Address: US TX Austin
- Assignee: FREESCALE SEMICONDUCTOR, INC.
- Current Assignee: FREESCALE SEMICONDUCTOR, INC.
- Current Assignee Address: US TX Austin
- Main IPC: H01H36/00
- IPC: H01H36/00 ; H01H19/18 ; G01R31/327 ; H03K17/18

Abstract:
A method of switch detection is disclosed that comprises, enabling a low power mode on a switch detection device, activating a first detection circuit for detecting, at a first expiration of a first polling time interval, a first switch state of a first switch having a first priority level, the first switch state including one of a first open state and a first closed state, comparing the detected first switch state with a prior first switch state, and activating a second detection circuit for detecting, at a second expiration of a second polling time interval, a second switch state of a second switch having a second priority level, the second switch including one of a second open state and a second closed state, and the second polling time interval being greater than the first polling time interval, and the second priority level being different from the first priority level.
Public/Granted literature
- US20150198666A1 SWITCH DETECTION DEVICE AND METHOD OF USE Public/Granted day:2015-07-16
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