Invention Grant
- Patent Title: Magnetic data recording device
- Patent Title (中): 磁数据记录装置
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Application No.: US11479897Application Date: 2006-06-30
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Publication No.: US07641124B2Publication Date: 2010-01-05
- Inventor: Kerry D. Brown , David K. Pariseau , Weidong Li , Edgar M. Williams , Joyce Thompson
- Applicant: Kerry D. Brown , David K. Pariseau , Weidong Li , Edgar M. Williams , Joyce Thompson
- Applicant Address: US CA Los Altos
- Assignee: Qsecure, Inc.
- Current Assignee: Qsecure, Inc.
- Current Assignee Address: US CA Los Altos
- Agent Richard B. Main
- Main IPC: G06K19/06
- IPC: G06K19/06

Abstract:
A Q-Chip MEMS magnetic device comprises a thin-film electronic circuit for implantation in the Track-2 area of a magnetic stripe on the back of a credit card. The Q-Chip MEMS magnetic device periodically self-generates new sub-sets of magnetic data that are to be read in combination with other magnetic data that is permanently recorded in the surrounding surface of the magnetic stripe. A collocated battery and microcontroller provide operating power and new data for magnetic bit updates. A swipe sensor triggers such updates by sensing electrical contact with a legacy card reader. Several thin-film coils of wire are wound end-to-end around a common, flat, ferrous core. These are driven by the microcontroller. In one instance, such core comprises “hard” magnetic material with a coercivity of 200-300 Oersteds. Magnetic data written from the corresponding adjacent coils will persist for later readings by a legacy card reader. In another instance, the core comprises “soft” magnetic material with a coercivity of about one Oersted. A media stripe of “hard” magnetic film material overlays respective coils to receive magnetic data transfers. Magnetic data written from the corresponding adjacent coils will persist in the overlaying hard media for later readings by a legacy card reader. In a data input mode, the thin-film coils can be used as readers to provide updates and new programming to the microcontroller.
Public/Granted literature
- US20070241201A1 Q-chip MEMS magnetic device Public/Granted day:2007-10-18
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