| 摘要 |
A time slot scanning method that enables the capacitive touch screen to implement multiple scanning modes, where the said capacitive touch screen comprises the capacitance matrix and data processing modules that are electrically connected thereto; the said scanning method refers to a data acquisition mode where the signal scanning is initiated in a cycle and the received data generated due to scanning are acquired. The present invention enables the touch screen to execute multiple scanning modes with the time slot scanning method. Under the circumstances where the master scanning mode is executed, the scanning course of the slave scanning mode will be inserted in sections into the scanning course of the master scanning mode. Through the alternate use of the master scanning mode and slave scanning mode, the present invention is able to utilize the strengths of the master scanning and slave scanning are utilized to solve the issue that fails to be resolve by only one scanning mode used; in the meantime, the alternate use of the master scanning mode and slave scanning mode ensures the homogeneity of the data acquisition time, thus enabling the reliability of data; only part of the slave scanning mode is executed, so as to minimize the additional time consumption. |
| 主权项 |
1. A time slot scanning method enabling the capacitive touch screen to implement multiple scanning modes, where the said capacitive touch screen comprises the capacitance matrix and data processing modules that are electrically connected thereto; the said scanning method refers to a data acquisition mode where the signal scanning is initiated in a cycle and the received data generated due to scanning are acquired; the said method is characterized in that it comprises the following steps:
A. The said capacitive touch screen is equipped with hardware and software, enabling it to support the completion of multiple N+1 scanning modes, N≧1; B. One of N+1 scanning modes as stated in Step A is chosen to be set as the master scanning mode for the said touch screen, and other scanning modes thereof are respectively set as No. 1 slave scanning mode, No. 2 slave scanning mode . . . No. N slave scanning mode; The said master scanning mode obtains a master scanning data frame in its own master scanning cycle TP; the said various slave scanning modes respectively obtain a slave scanning data frame in their respective own slave scanning cycles T1, T2, . . . , TN; C. The divided scanning is used to enable various slave scanning modes to obtain their respective slave scanning data, namely, the Mi section of the scanning data subframes that are obtained through the unrepeatable time division scanning in the No. i slave scanning mode make up the No. i slave scanning data, i=1, 2, . . . , N; Mi represents the quantity of scanning data subframes for the No. i slave scanning mode, Mi≧1; Suppose j=1, 2, . . . , Mi, the subframe scanning cycle used for obtaining the No. ij scanning data subframe in the No. i slave scanning mode is tij, then:∑j=1Mitij=Ti; D. In a scanning cycle T, a master scanning data frame is obtained in a master scanning cycle TP, and the respective sections of the No. ij subframe scanning cycle tij for various slave scanning modes are used to obtain N No. ij scanning data subframes. i.e. T=TP+t1j+t2j+ . . . +tNj; that is to say, as for the No. i slave scanning mode, both the Mi master data frames and a No. i slave scanning data frame are obtained after Mi scanning cycles T have passed.
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