Multiple battery management
First Claim
1. A card reader, comprising:
- a read head within a slot of the card reader, the slot to receive a magnetic stripe of a financial transaction card swiped through the slot during a financial transaction between a buyer and seller, the read head configured to read data stored on the magnetic stripe and to produce a signal indicative of the data stored on the magnetic stripe;
tamper protection circuitry configured to detect tampering of at least one of physical or electrical components of the card reader;
a rechargeable battery electrically coupled to the tamper protection circuitry and battery protection circuitry and a control line of an electronic switch, the rechargeable battery configured to provide power through the battery protection circuitry to at least one of the read head and the tamper protection circuitry through a first isolation diode until the battery protection circuitry detects that a voltage of the rechargeable battery has dropped to a predetermined threshold voltage, and upon such detection, activate a battery protection state which results in a non-linear drop off in power coming from the battery protection circuitry that in turn causes the electronic switch to change from a first state to a second state via the control line of the electronic switch, wherein the predetermined threshold voltage is greater than zero;
a non-rechargeable battery configured to provide backup power to at least the tamper protection circuitry through the electronic switch and a second isolation diode; and
the electronic switch configured to;
operate in the first state to electrically isolate the non-rechargeable battery from the read head and the tamper protection circuitry, wherein the rechargeable battery provides power to the read head and the tamper protection circuitry through the battery protection circuitry and the first isolation diode in the first state of the electronic switch, andoperate in the second state, wherein the non-rechargeable battery provides power to at least the tamper protection circuitry through the electronic switch and the second isolation diode in the second state of the electronic switch.
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Accused Products
Abstract
Approaches provide for managing a multiple battery system in an electronic device. In particular, various examples enable a component, or combination or components, such as an electronic switching component to detect a state of a power source to manage switching between at least two power sources. For example, battery protection circuitry can be configured to detect that a voltage of a rechargeable battery has dropped to a threshold voltage, and upon such determination, activate a battery protection state which can result in a non-linear drop off in voltage coming from the rechargeable battery. An electronic switch can detect the non-linear drop off in voltage and can disconnect the rechargeable battery from at least one device component and connect a non-rechargeable battery to the at least one device component to provide backup power to at one component.
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Citations
20 Claims
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1. A card reader, comprising:
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a read head within a slot of the card reader, the slot to receive a magnetic stripe of a financial transaction card swiped through the slot during a financial transaction between a buyer and seller, the read head configured to read data stored on the magnetic stripe and to produce a signal indicative of the data stored on the magnetic stripe; tamper protection circuitry configured to detect tampering of at least one of physical or electrical components of the card reader; a rechargeable battery electrically coupled to the tamper protection circuitry and battery protection circuitry and a control line of an electronic switch, the rechargeable battery configured to provide power through the battery protection circuitry to at least one of the read head and the tamper protection circuitry through a first isolation diode until the battery protection circuitry detects that a voltage of the rechargeable battery has dropped to a predetermined threshold voltage, and upon such detection, activate a battery protection state which results in a non-linear drop off in power coming from the battery protection circuitry that in turn causes the electronic switch to change from a first state to a second state via the control line of the electronic switch, wherein the predetermined threshold voltage is greater than zero; a non-rechargeable battery configured to provide backup power to at least the tamper protection circuitry through the electronic switch and a second isolation diode; and the electronic switch configured to; operate in the first state to electrically isolate the non-rechargeable battery from the read head and the tamper protection circuitry, wherein the rechargeable battery provides power to the read head and the tamper protection circuitry through the battery protection circuitry and the first isolation diode in the first state of the electronic switch, and operate in the second state, wherein the non-rechargeable battery provides power to at least the tamper protection circuitry through the electronic switch and the second isolation diode in the second state of the electronic switch. - View Dependent Claims (2, 3, 4)
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5. A card reader, comprising:
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a read head within a slot of the card reader, the slot to receive a financial transaction card during a financial transaction between a plurality of entities, the read head configured to read data that is stored on the financial transaction card and generate a signal indicative of the data that is stored on the financial transaction card; backup electronic circuitry other than the read head, the backup electronic circuitry configured to provide at least one backup operation; a first battery that is electrically coupled to a control line of an electronic switch, the first battery configured to provide power to at least one of the read head or the backup electronic circuitry when the electronic switch is in a first state, wherein a drop in voltage at the control line of the electronic switch from the first battery causes the electronic switch to change from the first state to a second state; a second battery configured to provide backup power to the backup electronic circuitry through the electronic switch when the electronic switch is in the second state; and the electronic switch, wherein the electronic switch is configured to; operate in the first state to electrically isolate the second battery from at least the backup electronic circuitry, wherein the first battery provides power to the read head and the backup electronic circuitry when the electronic switch is in the first state, and operate in the second state, wherein, the second battery provides power to the backup electronic circuitry through the electronic switch when the electronic switch is in the second state. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising:
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activating a card reader, the card reader including a read head within a slot of the card reader, the slot to receive a financial transaction card during a financial transaction between a plurality of entities, the read head configured to read data that is stored on the financial transaction card and generate a signal indicative of the data that is stored on the financial transaction card; determining that a voltage of a first battery exceeds a predetermined threshold voltage, wherein the predetermined threshold voltage is greater than zero; operating an electronic switch in a first state, wherein operation of the electronic switch in the first state electrically isolates a second battery from at least the read head and backup electronic circuitry other than the read head; providing power to the read head and the backup electronic circuitry from the first battery while operating the electronic switch in the first state; determining that the voltage of the first battery no longer exceeds the predetermined threshold voltage; causing a non-linear drop in power provided from the first battery in response to determining that the voltage of the first battery no longer exceeds the predetermined threshold voltage; receiving the non-linear drop in power provided from the first battery at a control line of the electronic switch; and operating the electronic switch in a second state in response to receipt of the non-linear drop in power provided from the first battery at the control line of the electronic switch, wherein operation of the electronic switch in the second state causes the second battery to provide backup power to the backup electronic circuitry through the electronic switch. - View Dependent Claims (18, 19, 20)
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Specification