Chemistry: electrical current producing apparatus – product – and – With measuring – testing – or indicating means – For charge or liquid level
Patent
1997-12-09
1999-03-02
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
With measuring, testing, or indicating means
For charge or liquid level
429 92, 340636, 324433, H01M 1048
Patent
active
058768700
ABSTRACT:
At step S21, a residual amount judging section of abattery residual amount display circuit measures a battery voltage. If a mode transition is detected at step S22, the process returns to step S21 without executing the subsequent steps. If it is judged at step S23 that the operation mode is a reception-waiting mode, the process goes to step S24, where the battery amount judging section judges a battery residual amount by comparing the detected battery voltage with threshold values. If the operation mode is judged to be a transmission mode, the battery residual amount judging section determines a voltage drop during a transmission at step S25, and converts the voltage drop into a battery voltage of a reception waiting mode at step S26 by subtracting the voltage drop from a batter voltage obtained in a reception waiting mode immediately before the mode transition. At step S27, the battery residual amount judging section determines a battery residual amount by comparing the converted battery voltage with the threshold values.
REFERENCES:
patent: 5479085 (1995-12-01), Honda et al.
patent: 5518835 (1996-05-01), Simmonds
patent: 5658682 (1997-08-01), Usuda et al.
NEC Corporation
Skapars Anthony
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