Invention Grant
US08208961B2 Methods for initiating operating voltages for subscriber identity cards and systems utilizing the same
有权
启动用户身份卡和使用该身份卡的系统的操作电压的方法
- Patent Title: Methods for initiating operating voltages for subscriber identity cards and systems utilizing the same
- Patent Title (中): 启动用户身份卡和使用该身份卡的系统的操作电压的方法
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Application No.: US13352003Application Date: 2012-01-17
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Publication No.: US08208961B2Publication Date: 2012-06-26
- Inventor: Liu-Yang Lin , Chiang Hsia Huang
- Applicant: Liu-Yang Lin , Chiang Hsia Huang
- Applicant Address: TW Hsin-Chu
- Assignee: Mediatek Inc.
- Current Assignee: Mediatek Inc.
- Current Assignee Address: TW Hsin-Chu
- Agency: Thomas|Kayden
- Main IPC: H04M1/38
- IPC: H04M1/38
Abstract:
A system for operating at least two subscriber identity cards has a subscriber identity module (SIM) controller generating a first voltage variable signal with a first voltage level to a first subscriber identity card during a first time period, generating the first voltage variable signal at a second voltage level to the first subscriber identity card during a second time period, receiving a first code indicating that generated voltage matches from the first subscriber identity card during the first or second time period, generating a first operating voltage with the first voltage level to the first subscriber identity card when receiving the first code in the first time period, generating the first operating voltage with the second voltage level when receiving the first code in the second time period.
Public/Granted literature
- US20120115546A1 METHODS FOR INITIATING OPERATING VOLTAGES FOR SUBSCRIBER IDENTITY CARDS AND SYSTEMS UTILIZING THE SAME Public/Granted day:2012-05-10
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