Title:
PORTABLE TERMINAL DEVICE WITH ILLUMINATION AND ITS CONTROL METHOD
Document Type and Number:
Japanese Patent JP3555867
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To shorten charging time for a battery of a portable terminal device.
SOLUTION: If a charging part 11 detects charging power from a charger 20 to a battery 12, a control part 18 confirms a set illumination mode for charging. As a result of confirmation, a lighting part 15 is turned on at charging, a lighting power supply control part 16 reduces power to the lighting part 15, detecting a current consumption of the lighting part 15. At the charging part 11, a normal last charging current added with a current consumption value from the lighting power supply control part 16, is set as the current indicating the end of charging when it is lit, up to which set value charging is continued.
Inventors:
Takayuki Hayakawa
Application Number:
JP2000273968A
Publication Date:
August 18, 2004
Filing Date:
September 08, 2000
Export Citation:
Assignee:
Saitama NEC Corporation
International Classes:
H04B1/3822; H04B1/40; H04B7/26; H04M1/73; H04W52/00; H02J7/10; H04W88/02; (IPC1-7): H04M1/73; H02J7/10; H04B1/40; H04B7/26
Domestic Patent References:
| JP3085847A | ||||
| JP10234079A | ||||
| JP2000245070A |
Attorney, Agent or Firm:
Kihei Watanabe
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