摘要 |
A multi-stimulus controller for a multi-touch sensor is formed on a single integrated circuit (single-chip). The multi-stimulus controller includes a transmit oscillator, a transmit signal section that generates a plurality of drive signals based on a frequency of the transmit oscillator, a plurality of transmit channels that transmit the drive signals simultaneously to drive the multi-touch sensor, a receive channel that receives a sense signal resulting from the driving of the multi-touch sensor, a receive oscillator, and a demodulation section that demodulates the received sense signal based on a frequency of the receive oscillator to obtain sensing results, the demodulation section including a demodulator and a vector operator. |
申请人 |
APPLE INC.;HOTELLING, STEVEN, PORTER;KRAH, CHRISTOPH, HORST;YOUSEFPOR, MARDUKE;WILSON, THOMAS, JAMES |
发明人 |
HOTELLING, STEVEN, PORTER;KRAH, CHRISTOPH, HORST;YOUSEFPOR, MARDUKE;WILSON, THOMAS, JAMES |