Battery type sensing method and device for sensing battery type
First Claim
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1. A method of detecting a battery type, comprising:
- receiving a signal of a waveform that has high and low logic levels and transitions between the high and low logic levels from a battery module in a portable computing device;
determining if the signal is in a first state which is one of the high and low logic levels for at least a first predetermined time before transitioning to a second state which is the other of the high and low logic levels;
determining if the signal transitions from the second state to the first state after a second predetermined time, and identifying the battery type in response thereto; and
asserting an indication of the battery type when a third predetermined time period after the transition from the second state to the first state has occurred.
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Abstract
A battery type detection approach is disclosed. In one embodiment, a method of detecting a battery type can include: receiving a signal from a battery module in a portable computing device; determining if the signal is in a first state for at least a first predetermined time before transitioning to a second state; determining if the signal transitions from the second state to the first state after a second predetermined time, and identifying the battery type in response thereto; and asserting an indication of the battery type when a third predetermined time period after the transition from the second state to the first state has occurred.
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Citations
24 Claims
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1. A method of detecting a battery type, comprising:
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receiving a signal of a waveform that has high and low logic levels and transitions between the high and low logic levels from a battery module in a portable computing device; determining if the signal is in a first state which is one of the high and low logic levels for at least a first predetermined time before transitioning to a second state which is the other of the high and low logic levels; determining if the signal transitions from the second state to the first state after a second predetermined time, and identifying the battery type in response thereto; and asserting an indication of the battery type when a third predetermined time period after the transition from the second state to the first state has occurred. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 22)
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11. A method of controlling a battery module in a portable computing device, the method comprising:
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receiving a signal from the battery module of a waveform that has high and low logic levels and transitions between the high and low logic levels from a battery module in a portable computing device; determining if the signal is in a first state which is one of the high and low logic levels for at least a first predetermined time before transitioning to a second state which is the other of the high and low logic levels; determining if the signal transitions from the second state to the first state after a second predetermined time, and identifying the battery type in response thereto; determining a battery type using a signal received from the battery module; allowing charging of the battery module at a first rate when a first battery type has been detected; allowing charging of the battery module at a second rate when a second battery type has been detected; and adjusting access to the battery module when neither the first nor the second battery types have been detected. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A portable computing device, comprising:
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one or more processors; and logic encoded in one or more non-transitory tangible media for execution by the one or more processors, and when executed operable to; receive a signal of a waveform that has high and low logic levels and transitions between the high and low logic levels from a battery module; determine if the signal is in a first state which is one of the high and low logic levels for at least a first predetermined time before transitioning to a second state which is the other of the high and low logic levels; determine if the signal transitions from the second state to the first state after a second predetermined time, and identify a battery type in response thereto; and assert an indication of the battery type when a third predetermined time period after the transition from the second state to the first state has occurred. - View Dependent Claims (19, 20, 23)
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24. A method, comprising:
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prior to allowing a battery to be charged, receiving a signal of a waveform that has high and low logic levels and transitions between the high and low logic levels from a battery module in a portable computing device; determining if the signal is in a first state which is one of the high and low logic levels for at least a first predetermined time before transitioning to a second state which is the other of the high and low logic levels; determining if the signal transitions from the second state to the first state after a second predetermined time, and identifying the battery type in response thereto; and asserting an indication of the battery type when a third predetermined time period after the transition from the second state to the first state has occurred.
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Specification