Resistive Touch Panel Detection Method and Apparatus

A resistive touch panel detection method comprising:

• step b1:
• based on voltage detections before touching and after a two-point touch occurs, calculating a resistance variance ratio of a Y plane relative to an X plane as well as a first ratio of a resistance variance of any one of the X plane and the Y plane relative to a total resistance of the any one plane;
• wherein the resistance variance ratio is proportional to a voltage variance ratio of the Y plane relative to the X plane, the first ratio is proportional to a ratio between a voltage variance of the any one plane and a voltage of the any one plane when there is no touching;
• step b2:
• based on a contact resistance detection after a two-point touch occurs, calculating a second ratio of an equivalent contact resistance at a midpoint between the two points relative to the total resistance of the any one plane;
• wherein the contact resistance detection is based on a resistance partial pressure ratio of the contact resistance relative to the any one plane as well as a coordinate of the midpoint in the any one plane;
• the second ratio equals to a product of the resistance partial pressure ratio and a dividing ratio of the total resistance of the any one plane created by the midpoint;
• step b3:
• calculating a distance between the two points according to the resistance variance ratio, the first ratio, the second ratio and a correlated relationship of the distance between the two points;
• wherein the correlated relationship is established in advance, according to resistance relationship of the X plane and the Y plane after a two-point touch occurs and based on corresponding relationship between an inclination angle of a connecting line between two points and the resistance variance ratio.

A resistive touch panel detection apparatus comprising:

• a resistance change detection module configured to, based on voltage detections before touching and after a two-point touch occurs, calculate a resistance variance ratio of a Y plane relative to an X plane as well as a first ratio of a resistance variance of any one of the X plane and the Y plane relative to a total resistance of the any one plane;
• wherein the resistance variance ratio is proportional to a voltage variance ratio of the Y plane relative to the X plane, the first ratio is proportional to a ratio between a voltage variance of the any one plane and a voltage of the any one plane when there is no touching;
• a contact resistance detection module configured to, based on a contact resistance detection after a two-point touch occurs, calculate a second ratio of an equivalent contact resistance at a midpoint between the two points relative to the total resistance of the any one plane;
• wherein the contact resistance detection is based on a resistance partial pressure ratio of the contact resistance relative to the any one plane as well as a coordinate of the midpoint in the any one plane;
• the second ratio equals to a product of the resistance partial pressure ratio and a dividing ratio of the total resistance of the any one plane created by the midpoint;
• a distance of two points calculation module configured to calculate a distance between the two points according to the resistance variance ratio, the first ratio, the second ratio and a correlated relationship of the distance between the two points;
• wherein the correlated relationship is established in advance, according to resistance relationship of the X plane and the Y plane after a two-point touch occurs and based on corresponding relationship between an inclination angle of a connecting line between two points and the resistance variance ratio.