Programmed Control of a Handheld Battery Operated Device
First Claim
1. A method for operating a handheld battery powered device, comprising the steps of:
- providing a circuit for operating said battery powered device;
providing a programmable microcontroller in said circuit that is operable according to a program;
providing a program for operating said microcontroller responsive to respective sensed states of at least one control switch, of signals from either of at least first and second battery packs having different battery characteristics, and of feedback signals from at least one operative load controlled by said microcontroller wherein said program further provides for;
controlling at least one control output of said microcontroller connected respectively to said at least one operative load in said handheld battery powered device.
2 Assignments
0 Petitions
Accused Products
Abstract
A heat sink for a handheld device is formed as a one piece chassis for supporting heat-producing circuits inside the device while having heat radiating surfaces outside the device. In another embodiment a battery pack control circuit under microprocessor control allows battery packs having different battery chemistries and characteristics to be interchanged in the same device without switches or adapters. Control of operating modes of the device despite changes in the battery pack including battery chemistry, state of charge, available voltage, or desired operating mode are automatic. The microprocessor measures the battery pack characteristics, using look up tables in a suitable program to adjust the circuit operating modes. The microprocessor also responds to sequential switch contact closures in setting operating modes.
-
Citations
9 Claims
-
1. A method for operating a handheld battery powered device, comprising the steps of:
-
providing a circuit for operating said battery powered device; providing a programmable microcontroller in said circuit that is operable according to a program; providing a program for operating said microcontroller responsive to respective sensed states of at least one control switch, of signals from either of at least first and second battery packs having different battery characteristics, and of feedback signals from at least one operative load controlled by said microcontroller wherein said program further provides for; controlling at least one control output of said microcontroller connected respectively to said at least one operative load in said handheld battery powered device. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
-
-
2. The method of claim 51, wherein said step of providing a program for operating said microcontroller further comprises:
providing a program for operating said microcontroller responsive to respective sensed states of said at least one control switch.
Specification