Angle determining circuit, angle determining method, and folding screen terminal

A folding screen terminal, comprising a first screen and a second screen that are rotatably connected through a rotary shaft, wherein a resistance ring is fixedly provided outside the rotary shaft, and

• wherein the folding screen terminal further comprises an angle determining circuit, and the angle determining circuit comprises:
• a first power supply;
• a first resistor, wherein one terminal of the first resistor is electrically connected to an output terminal of the first power supply;
• a first conductive element, wherein the first conductive element is fixedly disposed at the first screen, one terminal of the first conductive element is electrically connected to the other terminal of the first resistor, and the other terminal of the first conductive element slidably abuts against the resistance ring;
• a second conductive element, wherein the second conductive element is fixedly disposed at the second screen, one terminal of the second conductive element slidably abuts against the resistance ring, the other terminal of the second conductive element is grounded, and sliding paths of the first conductive element and the second conductive element on the resistance ring are located in a same annular region in a circumferential direction of the resistance ring;
• and
• a processor;
• wherein the processor is configured to obtain a divided voltage value between the other terminal of the first resistor and the other terminal of the second conductive element, and determine an included angle between the first screen and the second screen based on a voltage value of the first power supply, a resistance value of the first resistor, and the obtained divided voltage value.

An angle determining method, applied to an angle determining circuit applied to a folding screen terminal comprising a first screen and a second screen that are rotatably connected through a rotary shaft, a resistance ring being fixedly provided outside the rotary shaft,

• wherein the angle determining circuit comprises:
• a first power supply;
• a first resistor, wherein one terminal of the first resistor is electrically connected to an output terminal of the first power supply;
• a first conductive element, wherein the first conductive element is fixedly disposed at the first screen, one terminal of the first conductive element is electrically connected to the other terminal of the first resistor, and the other terminal of the first conductive element slidably abuts against the resistance ring;
• a second conductive element, wherein the second conductive element is fixedly disposed at the second screen, one terminal of the second conductive element slidably abuts against the resistance ring, the other terminal of the second conductive element is grounded, and sliding paths of the first conductive element and the second conductive element on the resistance ring are located in a same annular region in a circumferential direction of the resistance ring;
• and
• a processor;
• wherein the angle determining method comprises:
• obtaining, by the processor, a divided voltage value between the other terminal of the first resistor and the other terminal of the second conductive element;
• and
• determining, by the processor based on a voltage value of the first power supply, a resistance value of the first resistor, and the obtained divided voltage value, an included angle between the first screen and the second screen.