| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a touch panel device for detecting a plurality of simultaneous touch inputs while allowing a change in an upper limit value for the number of detectable touch inputs during touch input operation. <P>SOLUTION: From a host CPU 5 disposed outside a touch panel device 1, the upper limit value for the number of touch inputs to be simultaneously detected is stored in a memory 42 (upper-limit key count storage area 424) of a touch panel controller 4. The upper limit value is duplicated into an upper-limit key setting area 425 in an early stage of each detection period of the touch inputs. A key decision processor 43 detects the position data of the touch input based on a detected data obtained from a touch panel 2 by a drive and detection unit 3. In a TNEW key memory area 421 of the memory 42, the number of touch inputs whose position data are detected is stored. The key decision processor 43 determines that the number of touch inputs exceeds the upper limit value, when the number of touch inputs is greater than the upper limit value stored in the upper-limit key setting area 425. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
