Data processing device and method of controlling power consumption in back-light in data processing device
First Claim
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1. A data processing device comprising:
- (a) a display unit;
(b) a plurality of light-emitting units which illuminate said display unit;
(c) detector which detects a power level of a communication unit of said data processing device which makes communication with another device; and
(d) a controller which turns off a number of said plurality of light-emitting units, said number being less than all, when said detector detects the power level indicating that there is communication between said data processing device and said other device in accordance with the detected power level.
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Abstract
A data processing device includes (a) a display unit, (b) a light-emitting unit which illuminates the display unit, (c) a communication unit which makes radio communication with other data processing devices, (d) a detector which detects whether the communication unit is in operation or not, and (e) a controller which limits a current to be supplied to the light-emitting unit in accordance with transmission power consumed in radio communication carried out by the communication unit, when the detector has detected that the communication unit is in operation.
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Citations
20 Claims
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1. A data processing device comprising:
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(a) a display unit; (b) a plurality of light-emitting units which illuminate said display unit; (c) detector which detects a power level of a communication unit of said data processing device which makes communication with another device; and (d) a controller which turns off a number of said plurality of light-emitting units, said number being less than all, when said detector detects the power level indicating that there is communication between said data processing device and said other device in accordance with the detected power level. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A data processing device comprising:
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(a) a display unit; (b) a plurality of light-emitting units which illuminate said display unit; (c) a communication unit which makes radio communication with another data processing devices; (d) a detector which detects a power level of said communication unit; and (e) a controller which independently turns on/off a number of said plurality of light-emitting units, said the number being less than all, in accordance with the power level. - View Dependent Claims (8, 9, 10)
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11. A method of operating a data processing device comprising a display unit and a plurality of light-emitting units which illuminate said display unit, comprising the steps of:
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(a) detecting a power level of a communication unit of said data processing device which makes communication with another device; and (b) turning off a number of said light-emitting units, said number being less than all, when said power level indicates that there is communication between said data processing device and said other device in accordance with the detected power level. - View Dependent Claims (12, 13, 14, 15)
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16. A method of operating a data processing device comprising a display unit, a plurality of light-emitting units which illuminates said display unit, and a communication unit which makes radio communication with other data processing devices, comprising the steps of:
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(a) detecting a power level of the communication unit which makes communication with another data processing device; and (b) independently turning on/off a number of said light-emitting unit, said number of being less than all, in accordance with the power level. - View Dependent Claims (17)
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18. A method of operating a data processing device including a display unit, a plurality of light-emitting units which illuminates said display unit, and a communication unit which makes radio communication with other data processing devices, comprising the steps of:
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(a) detecting a transmission power consumed in the radio communication carried out by said communication unit; and (b) turning on a number of said light-emitting units, said number is less than all and more than zero, when said transmission power is greater than a threshold. - View Dependent Claims (19, 20)
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Specification