Abstract: The application discloses a touch controller to determine a position where a user touches a touchscreen. The touchscreen includes a first transmitting electrode, a second transmitting electrode and a receiving electrode. The touch controller includes a signal generation module and a demodulation module. The signal generation module is configured to perform an in-phase code transmission at a first time so that the receiving electrode receives an in-phase code receiving signal correspondingly, and perform an inverting-phase code transmission at a second time so that the receiving electrode receives an inverting-phase code receiving signal correspondingly. The demodulation module is configured to determine the position where the user touches the touchscreen according to the in-phase code receiving signal corresponding to the first time and the inverting-phase code receiving signal corresponding to the second time.

Abstract: The application discloses a touch controller, configured to determine a position where a user touches a touchscreen, wherein the touchscreen includes a first transmitting electrode, a second transmitting electrode and a receiving electrode. The touch controller includes: a signal generation module, configured to perform an in-phase code transmission at a first time so that the receiving electrode receives an in-phase code receiving signal correspondingly, and perform an inverting-phase code transmission at a second time so that the receiving electrode receives an inverting-phase code receiving signal correspondingly; and a demodulation module, configured to determine the position where the user touches the touchscreen according to the in-phase code receiving signal corresponding to the first time and the inverting-phase code receiving signal corresponding to the second time.

Abstract: The present application provides a non-orthogonal demodulation module, receiving a received signal and the received signal is related to a summation of a plurality of transmitted signals. The plurality of transmitted signals are corresponding to a plurality of frequencies, and the plurality of transmitted signals are not orthogonal to each other. The non-orthogonal demodulation module comprises a mixing-and-integrating unit, configured to perform mixing operations and integrating operations on the received signal respectively at the plurality of frequencies, to generate a plurality of in-phase components and a plurality of quadrature components corresponding to the plurality of frequencies; and a decoding unit, configured to generate at least a decoding matrix, and compute a plurality of energies corresponding to the plurality of transmitted signals according to the at least a decoding matrix, the plurality of in-phase components and the plurality of quadrature components.

Abstract: A touch controller (16) includes: a signal generating module (12), coupled to a plurality of transmit electrodes (TE1˜TEM) of a touch panel, and is configured to output a first transmitting signal to a first transmit electrode (TEa) and simultaneously output a second transmitting signal to a second transmit electrode (TEb), wherein the first transmitting signal has a first phase, the second transmitting signal has a second phase; and a demodulating module (14), coupled to a plurality of receive electrodes (RE1˜REN) of the touch panel, and is configured to calculate a first amplitude (A) corresponding to the first phase and a second amplitude (B) corresponding to the second phase of the receiving signal according to a receiving signal (RXn) of a receive electrode (REn) of the plurality of receive electrodes.

Abstract: A touch controller (16) includes: a signal generating module (12), coupled to a plurality of transmit electrodes (TE1˜TEM) of a touch panel, and is configured to output a first transmitting signal to a first transmit electrode (TEa) and simultaneously output a second transmitting signal to a second transmit electrode (TEb), wherein the first transmitting signal has a first phase, the second transmitting signal has a second phase; and a demodulating module (14), coupled to a plurality of receive electrodes (RE1˜REN) of the touch panel, and is configured to calculate a first amplitude (A) corresponding to the first phase and a second amplitude (B) corresponding to the second phase of the receiving signal according to a receiving signal (RXn) of a receive electrode (REn) of the plurality of receive electrodes.

Abstract: The present application provides a non-orthogonal demodulation module, receiving a received signal and the received signal is related to a summation of a plurality of transmitted signals. The plurality of transmitted signals are corresponding to a plurality of frequencies, and the plurality of transmitted signals are not orthogonal to each other. The non-orthogonal demodulation module comprises a mixing-and-integrating unit, configured to perform mixing operations and integrating operations on the received signal respectively at the plurality of frequencies, to generate a plurality of in-phase components and a plurality of quadrature components corresponding to the plurality of frequencies; and a decoding unit, configured to generate at least a decoding matrix, and compute a plurality of energies corresponding to the plurality of transmitted signals according to the at least a decoding matrix, the plurality of in-phase components and the plurality of quadrature components.