Circuit complexity reduction of a capacitive touch system
First Claim
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1. A capacitive touch system, comprising;
- a touch panel;
at least two first integrated circuits connected to the touch panel, each of the first integrated circuits scanning a respective portion of the touch panel and having at least a first pin to transmit its sensed data retrieved by itself; and
a second integrated circuit having at least a second pin connected to the at least a first pin of each of the first integrated circuits to receive the sensed data therefrom, and calculating with the received sensed data.
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Abstract
A capacitive touch system uses at least two first integrated circuits to simultaneously scan a touch panel, each of the first integrated circuits only for scanning a portion of the touch panel. Therefore, the capacitive touch system can maintain a good frame rate, even the touch panel is a large scale touch panel. Each of the first integrated circuits transmits its sensed data to a second integrated circuit where a calculation with the received sensed data is executed. The second integrated circuit has at least a common pin connected to each of the first integrated circuits, and therefore the number of pins of the second integrated circuit is reduced.
33 Citations
9 Claims
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1. A capacitive touch system, comprising;
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a touch panel; at least two first integrated circuits connected to the touch panel, each of the first integrated circuits scanning a respective portion of the touch panel and having at least a first pin to transmit its sensed data retrieved by itself; and a second integrated circuit having at least a second pin connected to the at least a first pin of each of the first integrated circuits to receive the sensed data therefrom, and calculating with the received sensed data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification