Touch sensitive processing apparatus and touch system for detecting electrical signals and method thereof

A touch sensitive processing apparatus for detecting electrical signals, comprising:

• a sensing circuit module configured to sense electrical signals via first electrodes in parallel to a first axis and second electrodes in parallel to a second axis of a touch panel, wherein the electrical signals are emitted by an electrode of a transmitter touching or approximating the touch panel;
• and
• a processor module configured to execute instructions stored in non-volatile memory to fulfill the following steps:
• detecting periodically via the touch panel touching or approximating events and electrical signals according to a first period;
• performing multiple electrical signal detections during an electrical signal scanning period, after the electrical signals are detected in a first time, in order to detect the electrical signals in a second time;
• calculating a period of the electrical signal transmission of the transmitter according to the first time and the second time;
• and
• detecting periodically via the touch panel touching or approximating events and electrical signals according to the period of the electrical signal transmission,
• wherein one of the first period and the period of the electrical signal transmission is not an integer multiple of another of the first period and the period of the electrical signal transmission.

A touch system, comprising:

• a touch panel, comprising first electrodes in parallel to a first axis and second electrodes in parallel to a second axis;
• and
• a touch sensitive processing apparatus, comprising:
• a sensing circuit module configured to sense electrical signals via the first electrodes and the second electrodes of the touch panel, wherein the electrical signals are emitted by an electrode of a transmitter touching or approximating the touch panel;
• and
• a processor module configured to execute instructions stored in non-volatile memory to fulfill the following steps:
• detecting periodically via the touch panel touching or approximating events and electrical signals according to a first period;
• performing multiple electrical signal detections during an electrical signal scanning period, after the electrical signals are detected in a first time, in order to detect the electrical signals in a second time;
• calculating a period of the electrical signal transmission of the transmitter according to the first time and the second time;
• and
• detecting periodically via the touch panel touching or approximating events and electrical signals according to the period of the electrical signal transmission,
• wherein one of the first period and the period of the electrical signal transmission is not an integer multiple of another of the first period and the period of the electrical signal transmission.