Low-latency touch feedback
First Claim
Patent Images
1. An arrangement, comprising:
- a touch screen controller comprising circuitry and communicatively coupled with a touch sensor, a display screen, and a central processing unit (CPU), wherein the touch screen controller is configured to;
receive, while the CPU is in a sleep state and while applying a predefined first gamma curve having a first curvature to the display screen, a first touch input from the touch sensor; and
change, based on the first touch input and while the CPU remains in the sleep state, a visual characteristic of the display screen to visually indicate that the first touch input satisfies one or more predetermined touch criteria, wherein changing the visual characteristic of the display screen comprises;
determining, based on at least one touch characteristic of the first touch input, a second curvature different than the first curvature; and
applying a second gamma curve having the second curvature to the display screen.
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Abstract
Embodiments of the present invention generally provide a touch screen controller coupled to a touch sensor, a display, and a central processing unit. The touch screen controller is configured to detect first touch input received by the touch sensor and change a visual characteristic of the display upon detecting the first touch input. Detecting the first touch input and changing the visual characteristic are performed while the central processing unit is in a sleep state.
19 Citations
20 Claims
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1. An arrangement, comprising:
a touch screen controller comprising circuitry and communicatively coupled with a touch sensor, a display screen, and a central processing unit (CPU), wherein the touch screen controller is configured to; receive, while the CPU is in a sleep state and while applying a predefined first gamma curve having a first curvature to the display screen, a first touch input from the touch sensor; and change, based on the first touch input and while the CPU remains in the sleep state, a visual characteristic of the display screen to visually indicate that the first touch input satisfies one or more predetermined touch criteria, wherein changing the visual characteristic of the display screen comprises; determining, based on at least one touch characteristic of the first touch input, a second curvature different than the first curvature; and applying a second gamma curve having the second curvature to the display screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of input sensing using a touch screen controller coupled with a touch sensor, a display screen, and a central processing unit (CPU), the method comprising:
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receiving, while the CPU is in a sleep state and while applying a predefined first gamma curve having a first curvature to the display screen, a first touch input from the touch sensor; and changing, based on the first touch input and while the CPU remains in the sleep state, a visual characteristic of the display screen to visually indicate that the first touch input satisfies one or more predetermined touch criteria, wherein changing the visual characteristic of the display screen comprises; determining, based on at least one touch characteristic of the first touch input, a second curvature different than the first curvature; and applying a second gamma curve having the second curvature to the display screen. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A touch screen controller for a touch screen device having a touch sensor and a display screen, the touch screen controller comprising:
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a sensor module comprising circuitry and coupled with a central processing unit (CPU) and with the touch sensor, the sensor module configured to; receive, while the CPU is in a sleep state, a first touch input from the touch sensor; and determine at least one touch characteristic of the first touch input; and a display driver module coupled with the sensor module and with the display screen, the display driver module configured to; apply a predefined first gamma curve having a first curvature to the display screen, wherein the first touch input is received while applying the first predefined gamma curve; change, based on the first touch input and while the CPU remains in the sleep state, a visual characteristic of the display screen to visually indicate that the first touch input satisfies one or more predetermined touch criteria, wherein changing the visual characteristic of the display screen comprises; determining, based on the at least one touch characteristic of the first touch input, a second curvature different than the first curvature; and applying a second gamma curve having the second curvature to the display screen. - View Dependent Claims (20)
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Specification