Invention Grant
- Patent Title: Data communication device, air pressure monitoring system using thereof, and data communication method
- Patent Title (中): 数据通信装置，使用它的气压监测系统和数据通信方法
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Application No.: US12573649Application Date: 2009-10-05
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Publication No.: US08212664B2Publication Date: 2012-07-03
- Inventor: Tomotake Oba
- Applicant: Tomotake Oba
- Applicant Address: JP Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Sughrue Mion, PLLC
- Priority: JP2008-259584 20081006
- Main IPC: B60C23/00
- IPC: B60C23/00 ; H04Q7/20 ; H04L25/34
Abstract:
A data communication device includes: an antenna resonance circuit; a detection circuit; an arithmetic processing device; and a first switch. The antenna resonance circuit receives a signal in the ASK (Amplitude Shift Keying) format. The detection circuit demodulates a digital baseband signal based on the reception signal. The arithmetic processing device detects an appearance time of an edge in the demodulated digital baseband signal based on a preamble part of the reception signal. The first switch short-circuits both end of the antenna resonance circuit at first timing in synchronization with the appearance time of the edge.
Public/Granted literature
- US20100090820A1 DATA COMMUNICATION DEVICE, AIR PRESSURE MONITORING SYSTEM USING THEREOF, AND DATA COMMUNICATION METHOD Public/Granted day:2010-04-15
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