Apparatus for determining radio state during charging in order to provide charge compensation
First Claim
1. A battery charging system including a battery charger for charging a battery powered radio having a battery, comprising:
- at the radio;
a controller, the controller provides a control signal indicative of the state of the radio;
a magnetic field generator for generating a magnetic field in response to the control signal;
at the battery charger;
a magnetic field reception means for receiving the magnetic field generated by the magnetic field generator and providing a signal to the battery charger indicative of the present state of the radio.
3 Assignments
0 Petitions
Accused Products
Abstract
A battery charging system includes a battery pack (106) and charger (102). Battery pack (106) includes a selectable magnetic field generator (202) which is activated by radio controller (206) when radio (104) changes states. A Hall-effect switch (204) located in either charger (102) or battery (106) receives the magnetic field and informs charger monitor circuit (128) that radio (104) has changed states. This allows for charger (102) to modify the amount of current being provided to radio (104) via line (129). In a second embodiment, an infrared source (402) and an infrared detector (404) are used in place of selectable magnetic field generator (202) and Hall-effect switch (204).
52 Citations
9 Claims
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1. A battery charging system including a battery charger for charging a battery powered radio having a battery, comprising:
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at the radio; a controller, the controller provides a control signal indicative of the state of the radio; a magnetic field generator for generating a magnetic field in response to the control signal; at the battery charger; a magnetic field reception means for receiving the magnetic field generated by the magnetic field generator and providing a signal to the battery charger indicative of the present state of the radio. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9)
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6. A battery charging system including a battery charger for charging a battery powered radio having a battery, comprising:
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at the radio; a controller, the controller provides a control signal indicative of the state of the radio; a magnetic field generator for generating a magnetic field in response to the control signal; at the battery; a magnetic field reception means for receiving the magnetic field generated by the magnetic field generator and providing a signal to the battery charger indicative of the present state of the radio.
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Specification