Display control apparatus and control method
AssigneeCanon Kabushiki Kaisha
InventorYasutaka Naka
Life of this patent
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Abstract
A display control apparatus, allowing a plurality of input operations to be performed by a touch panel, increasing application performance, and decreasing power consumption, is realized. The display control apparatus performs a coordinate sampling processing at a short (fast) coordinate sampling cycle t1 until a predetermined time T elapses from the starting of touch, and performs the sampling in a coordinate sampling cycle t2 that is longer (slower) than t1 after the predetermined time T elapses. The display control apparatus can certainly distinguish an operation in a coordinate sampling cycle of a necessary minimum speed by setting a coordinate sampling cycle to be high-speed at immediately after starting, and changing a coordinate sampling cycle to be low-speed in the other period.
Claims17
A display control apparatus comprising:
- a display unit including a touch panel;
- a touch condition detection unit configured to detect whether the touch panel is touched;
- a touch position acquisition unit configured to acquire a touch position on the touch panel;
- a control unit configured to perform control to acquire a touch position at a first cycle by the touch position acquisition unit until a predetermined time elapses from detection of a touch by the touch condition detection unit, and after the predetermined time elapses, to acquire a touch position in a second cycle that longer than the first cycle by the touch position acquisition unit.
The display control method by a display control apparatus including a display unit including a touch panel, a touch condition detection unit configured to detect whether the touch panel is touched, and a touch position acquisition unit configured to acquire a touch position on the touch panel, the method further comprising;
- acquiring a touch position at a first cycle using the touch position acquisition unit, until a predetermined time elapses from detection of a touch by the touch condition detection unit, and
- acquiring a touch position at a second cycle that longer than a first cycle by the touch position acquisition unit, after the predetermined time elapses.
A non-transitory computer-readable storage medium storing a program for causing a computer to control a display control apparatus including a display unit including a touch panel, a touch condition detection unit configured to detect whether the touch panel is touched, and a touch position acquisition unit configured to acquire a touch position on the touch panel, to perform a method, the method comprising:
- acquiring a touch position, at a first cycle, by the touch position acquisition unit, until a predetermined time elapses from detection of a touch by the touch condition detection unit, and
- acquiring a touch position, at a second cycle that is longer than the first cycle, by the touch position acquisition unit, after the predetermined time elapses.
Dependencies are inferred from the claim text.