Managing laptop power based on display angle
AssigneeLenovo (Singapore) Pte. Ltd.
InventorYasumichi Tsukamoto
Life of this patent
Estimating the term…
Abstract
A notebook type of computer of one embodiment includes a display unit, a housing to which the display unit is pivotally attached, an angle sensor which detects an opening angle between the display unit and the housing, a sensor driver which A/D converts an output from the angle sensor and passes the result to a power management driver, and an angle comparison module which reads a setting value as to the opening angle and determines whether the opening angle is within a range of a predetermined angle. If the opening angle is within the predetermined range, a user is presumed to be using the notebook computer on a lap and the power management operation is performed per that presumption.
Claims12
Apparatus comprising:
- a display unit;
- a housing to which said display unit is pivotally attached;
- a CPU incorporated in said housing;
- an angle sensor which detects an opening angle between said display unit and said housing;
- a power management driver;
- a sensor driver which is coupled to said power management driver and which A/D converts an output from said angle sensor and provides the output to said power management driver;
- and
- an angle comparison module which is coupled to said sensor driver and which determines that the opening angle falls within a predetermined range of a predetermined angle;
- wherein said power management driver drives a power management condition specified by the opening angle being read from a look-up table on condition that the opening angle falls within the predetermined range.
A method comprising:
- detecting an opening angle between a display unit and a housing of an information processing apparatus wherein the display unit is pivotally attached to the housing;
- comparing the opening angle with a predetermined angular range;
- reading a power management setting value specified by the opening angle from a look-up table, if the opening angle is determined to be within the predetermined angular range;
- and
- changing an operational mode of the information processing apparatus to an operational mode for reducing at least a clock rate of a CPU incorporated in the housing, under a condition specified by the power management setting value.
A method comprising:
- producing computer executable program code;
- storing the produced program code on a computer readable medium;
- and
- providing the program code to be deployed to and executed on a computer system;
- the program code comprising instructions which, when executing on the computer system:
- detect an opening angle between a display unit and a housing of an information processing apparatus wherein the display unit is pivotally attached to the housing;
- compare the opening angle with a predetermined angular range;
- read a power management setting value specified by the opening angle from a look-up table, if the opening angle is determined to be within the predetermined angular range;
- and
- change an operational mode of the information processing apparatus to an operational mode for reducing at least a clock rate of a CPU incorporated in the housing, under a condition specified by the power management setting value.
Dependencies are inferred from the claim text.