Battery-powered mobile phone having additional functions
First Claim
1. A mobile phone powered by a battery having a communication function and an additional function, the mobile phone comprising:
- means for determining whether a level of a battery capacity is lower than a threshold level for permitting operation of the additional function;
means for detecting a signal indicating operation of the additional function; and
means for informing a user of restriction of the additional function when the battery capacity is lower than the threshold level and the signal indicating operation of the additional function exists.
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Accused Products
Abstract
A battery-powered mobile phone includes additional functions other than a communication function. Operation of the additional functions is restricted to save the battery capacity for the communication function when a residual battery capacity detected based on the terminal voltage decreases to a certain level. A warning indicating that the battery capacity has decreased to a certain level is given to a user when the additional functions are under operation. The user may terminate operation of the additional functions to save the battery capacity when the warning is given, or may choose to continue the operation. The communication function of the mobile phone can be kept longer by restricting operation of the additional functions in this manner.
60 Citations
16 Claims
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1. A mobile phone powered by a battery having a communication function and an additional function, the mobile phone comprising:
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means for determining whether a level of a battery capacity is lower than a threshold level for permitting operation of the additional function;
means for detecting a signal indicating operation of the additional function; and
means for informing a user of restriction of the additional function when the battery capacity is lower than the threshold level and the signal indicating operation of the additional function exists. - View Dependent Claims (2)
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3. A mobile phone powered by a battery having a communication function and a function for producing music sounds, the mobile phone comprising:
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means for determining whether a level of a battery capacity is lower than a threshold level for permitting operation of the music sounds producing function; and
means for terminating operation of the music sounds producing function and for informing a user of that effect when the battery capacity becomes lower than the threshold level during a period in which the music sounds generating function is being operated.
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4. A mobile phone powered by a battery having a communication function and an additional function, the mobile phone comprising:
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first means for determining whether a battery capacity is lower than a first level;
first means for restricting operation of the additional function when the battery capacity is lower than the first level;
second means for determining whether the battery capacity is lower than a second level which is lower than the first level; and
second means for restricting operation of the communication function when the battery capacity is lower than the second level. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A mobile phone powered by a battery having a communication function and at least one additional function, the mobile phone comprising:
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first means for determining whether a battery capacity is lower than a first level;
means for informing to a user that the battery capacity is lower than the first level when such is determined by the first determining means;
second means for determining whether the battery capacity is lower than a second level which is lower than the first level; and
means for restricting operation of the communication function when the battery capacity is determined to be lower than the second level by the second determining means. - View Dependent Claims (15, 16)
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Specification