Method and apparatus for communication between an electronic device and a connected battery
First Claim
1. An apparatus supporting both battery identification and communications over an interface between a battery and an electronic device, comprising:
- a first circuitry within the electronic device capable of communicating with the battery;
means for identifying a type of the battery connected to the electronic device; and
means enabling communications between the first circuitry and communications circuitry within the battery.
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Abstract
An apparatus supporting both identification of a battery type and communications over an interface between a battery and an electronic device is disclosed. The electronic device includes a processor for communicating with communications circuitry of the battery. Identification circuitry associated with the processor enables a determination of the type of battery with which the electronic device is connected. If a “smart” battery capable of carrying out serial communications with the electronic device is connected, the electronic device further provides means for carrying out communications between the processor and the communication circuitry of the battery.
61 Citations
27 Claims
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1. An apparatus supporting both battery identification and communications over an interface between a battery and an electronic device, comprising:
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a first circuitry within the electronic device capable of communicating with the battery;
means for identifying a type of the battery connected to the electronic device; and
means enabling communications between the first circuitry and communications circuitry within the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method enabling both battery identification and serial communication over an interface between a battery and an electronic device, comprising:
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measuring an impedance between a communications pin and a ground pin within a battery in response to an active connection between the battery and the electronic device; and
determining whether the battery has communications capabilities and a type of the battery based on the measured impedance. - View Dependent Claims (14, 15, 16, 17)
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18. A battery comprising;
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means for providing a power source to a connected electronic device;
a first memory for storing a representation of a total capacity of the battery; and
a second memory for storing a representation of the current capacity of the battery, wherein upon connection of the electronic device present charge level of the battery may be determined from the first and the second memories. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A battery comprising:
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means for providing a power source to a connected electronic device;
a first memory for storing a selected number of charge units representing a fully charged battery;
a second memory for storing a number of charge units no greater than the selected number for a fully charged battery representing a current charge of the battery, wherein upon connection of the electronic device the number of charge units in the second memory are periodically updated based upon current usage levels of an attached electronic device and a present charge level of the battery may be determined from the first and the second memory. - View Dependent Claims (25, 26, 27)
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Specification