Electrical transmission or interconnection systems – Miscellaneous systems – Power packs
Patent
1999-07-02
2000-11-28
Jackson, Stephen W.
Electrical transmission or interconnection systems
Miscellaneous systems
Power packs
307 64, 307 66, H02J 700
Patent
active
061539503
ABSTRACT:
A power supply device for an electronic equipment is able to execute an accurate discrimination even when a battery, whose characteristics are different, is attached to the electronic equipment. A power supply voltage from a battery cell 11 provided in an external battery 1 is outputted to a power supply terminal 12 and also supplied to an input terminal of an A/D converting means housed in a microcomputer 13. The microcomputer 13 stores threshold values of operation discrimination voltages of a battery (B), and these values are transmitted through a communication terminal 14. A terminal voltage, which is inputted to a power supply terminal 21 provided in an electronic equipment body 2, is applied to an internal circuit 22 or the like, and is also applied to an input terminal of an A/D converting means housed in a microcomputer 23. Also, the microcomputer 23 stores threshold values of operation discrimination voltages of an equipment body (S). Further, the microcomputer 23 includes a communication terminal 24, and the communication terminal 24 and the communication terminal 14 are connected to each other to enable the microcomputers 13, 23 to communicate with each other.
REFERENCES:
patent: 4839645 (1989-06-01), Lill
patent: 5430363 (1995-07-01), Kim
patent: 5825286 (1998-10-01), Coulthard
Higuchi Yoshinari
Hirano Hirotaka
Frommer William S.
Jackson Stephen W.
Polk Sharon
Smid Dennis M.
Sony Corporation
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