Invention Grant
- Patent Title: Card reader with power efficient architecture that includes a wake-up circuit
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Application No.: US15013964Application Date: 2016-02-02
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Publication No.: US09858603B2Publication Date: 2018-01-02
- Inventor: Kartik Lamba , Amish Babu , Michael Shyh-yen Ho , Adam David Peter Rothschild , Gerald Thomas Ryle , Jack Dorsey , James M. McKelvey
- Applicant: Square, Inc.
- Applicant Address: US CA San Francisco
- Assignee: Square, Inc.
- Current Assignee: Square, Inc.
- Current Assignee Address: US CA San Francisco
- Agency: Polsinelli PC
- Main IPC: G06K19/06
- IPC: G06K19/06 ; G06Q30/06 ; G06K19/07 ; G06Q20/20 ; G06Q20/32 ; G06Q20/34 ; G06Q40/02 ; G07F7/08

Abstract:
A card reader is provided with a read head with a slot and is configured to be coupled to a mobile device and has a slot for swiping a magnetic stripe of a card. The read head reads data on the magnetic stripe and produces a raw magnetic signal indicative of data stored on the magnetic stripe. A power supply is coupled to wake-up electronics and a microcontroller. An output jack is adapted to be inserted in a port of the mobile device and deliver an output jack signal to the mobile device. The wake-up electronics is powered by a microphone bias of a mobile device.
Public/Granted literature
- US20160203667A1 CARD READER WITH POWER EFFICIENT ARCHITECTURE THAT INCLUDES A WAKE-UP CIRCUIT Public/Granted day:2016-07-14
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