Battery charger/remote control for portable radio devices
Transceiver battery charging apparatus and method
Microprocessor controlled battery reconditioner for portable radio transceivers Patent #: 4734635
ApplicationNo. 584828 filed on 09/19/1990
US Classes:320/114, For handheld device320/160, Multi-rate charging (e.g., plural charge rates before a maintenance charge, etc.)455/343.1, Having particular power or bias supply (including self-powered or battery saving means)455/573Battery charging
ExaminersPrimary: Hickey, R. J.
Attorney, Agent or Firm
International ClassesH02J 007/00
Foreign Application Priority Data1989-09-20 JP
AbstractAn electronic apparatus comprising a charger and an electronic device connected removably to the charger. The electronic device comprises a rechargeable battery unit charged by the charger when the charger is connected to the electronic device, an electronic unit having a plurality of operational modes in each of which a different operating current is required, a charger connection detector for detecting the connection of the charger to the electronic device, and a first control unit for calculating an appropriate current to be supplied from the charger, on the basis of an appropriate operating current value corresponding to the operational mode of the electronic unit and a specified charging current value for the battery unit, and informing the charger of the appropriate supplying current value when the charger connection detector detects that the charger is connected to the electronic device. The charger comprises a current supplying circuit for supplying the electric current to the electronic device, and a second control unit for controlling the current to be supplied by the current supplying circuit such that the controlled current coincides with the appropriate supplying current when the first control unit informs the charger of the appropriate supplying current value.