Equipment positioning method and device applied to large display screen or projection screen

A positioning method and large-scale display technology, applied in the input/output process of data processing, image analysis, image enhancement, etc., can solve problems such as limited resolution, inability to achieve free positioning, and inability to directly apply large-scale display screens.

Pending Publication Date: 2018-07-10
PEKING UNIV
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this patent is that it requires the use of two-dimensional code coordinate paper, which cannot directly realize device positioning and handwriting input on display devices such as televisions.
The disadvan

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Equipment positioning method and device applied to large display screen or projection screen
  • Equipment positioning method and device applied to large display screen or projection screen
  • Equipment positioning method and device applied to large display screen or projection screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0090] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0091] The novel handwriting input device of the present invention is implemented by a digital watermarking algorithm in the space domain, and the implementation scheme is as follows: Figure 9 As shown, the system is divided into a stylus and a main control device. The main control device can be realized through the combination of ARM+FPGA chips. The ARM processor part realizes functions such as software control program, scanning control, and trajectory drawing, and the FPGA part realizes watermark generation and embedding. And detection, positioning calculation and other functions;

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an equipment positioning method applied to a display screen or a projection screen. The equipment positioning method comprises the steps that a digital watermark image block isembedded into an image on a display screen, positioning equipment (e.g., a handwriting pen) with a camera is used to snapshoot the image block containing a digital watermark, watermark detection processing is performed on the image, therefore, the position of the handwriting pen is determined, a motion trail of the positioning equipment can be obtained through multiple positioning points, and then a handwriting input function is achieved. The method has the advantages that positioning resolution is high, the influence on picture quality is small, the handwriting input function can be directlyachieved on the display screen in a large size without a touch medium, realization operability is high, cost is low compared with a common touch screen, and high economic value is obtained.

Description

technical field [0001] The invention relates to an equipment positioning method and device applied to large display screens or projection screens. Background technique [0002] Handwriting input has become an important way of computer input, and one of the most important technologies involved in handwriting input is device positioning technology. There are many forms of display screen positioning technology currently used, but two types of technology are the main ones. One type of positioning method needs to realize the positioning of the handwriting device through the touch medium or attaching other devices on the display screen, so as to realize the handwriting input function, including infrared touch technology, capacitive touch technology, resistive touch technology, LED dot matrix screen detection technology, etc. This kind of technology is relatively mature and easy to implement, but the cost is high, so this kind of handwriting input and positioning technology is mo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F3/041G06F3/042G06F3/0346G06F3/038G06F3/0488G06T1/00G06T7/73G06T7/13
CPCG06F3/0346G06F3/038G06F3/0416G06F3/0425G06F3/04883G06T1/0021G06T2207/10004G06T2201/0065
Inventor 段晓辉周闻杰
Owner PEKING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap