Position indicating method, operating device, display device and position indicating device

Abstract

A position indicating method, an operating apparatus, a display apparatus, and a position indicating apparatus, the method comprising: the operating apparatus indicates any position on a display screen of the display apparatus from a non-contact position, and photographs the indicated position to obtain an imaging picture (S11); the operating apparatus identifies a position identifier in the imaging picture at the current time (S12); when identifying a position identifier in the imaging picture at the current time, on the basis of the coordinates of the position identifier in the imaging picture at the current time, the operating apparatus acquires coordinates of the indicated position on the display screen at the current time (S13); when not identifying the position identifier in the imaging picture at the current time, on the basis of the coordinates of the position identifier in the imaging picture at time X and the movement displacement of the operating apparatus between time X and the current time, the operating apparatus acquires the coordinates of the indicated position on the display screen at the current time (S14); and the operating apparatus sends the coordinates of the indicated position on the display screen at the current time to the display apparatus, such that the display apparatus performs display processing of the indicated position on the display screen (S15). The present method can calculate the coordinates of the indicated position on the display screen regardless of whether the position identifier has been identified on the imaging picture at the current time, overcoming the defect of being unable to perform normal indication due to photographic blind spots.

Description

technical field [0001] The invention relates to the technical field of electronic display, in particular to a position indicating method, an operating device, a display device and a position indicating device. Background technique [0002] In conference or teaching scenarios, the speaker usually uses a laser pointer to project a light point onto the screen, thereby indicating a specific position on the screen. Laser pointer, also known as laser pointer, pointing star pen, etc., is a pen-shaped transmitter that is designed to be portable, easy to hold, and processed into a laser module (light-emitting diode) with visible laser light. [0003] The use of laser pointers for position indication has two drawbacks: [0004] First, many of the laser pointers and laser flashlights sold on the market are Class IIIB, with a power of more than 5mW. If the laser is directly shot into the eyes, it may cause damage to the eyes. For some high-power laser pointers, the diffuse light may a...

AI Technical Summary

Problems solved by technology

[0008] In view of the above problems, the object of the present invention is to provide a position indication method, an operating device, a display device and a position indication device, which are suitable for various display devices, and can accurately indicate the position to be indicated, avoiding the failure of normal indication due to blind spots in shooting Case

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