Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A single-line LED data transmission display method and driver chip

A LED chip and LED drive technology, applied in the direction of electrical components, etc., can solve the problems of signal judgment error, signal distortion, shaping error, etc., and achieve the effect of reducing bit error rate, good compatibility, and solving glitch interference

Active Publication Date: 2021-03-02
PURESEMI CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For circuits existing in the prior art, when the transmission data is far away or the number of cascades is large, it is easy to cause signal distortion. In the prior art pulse shaping scheme, the cycle of the clock signal is too large to easily cause shaping errors. When the transmission distance becomes larger, it may Wider burrs cause signal judgment errors. The invention provides a single-line LED data transmission display method and a driver chip. In multi-level cascaded LED constant current chips, in addition to realizing large data transmission distances and large series series It can also independently adjust the current of each lamp bead, configure register data and check code data, display data and check, adjust the overall display effect, etc., which improves the flexibility, anti-interference and accuracy of the system

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
  • A single-line LED data transmission display method and driver chip
  • A single-line LED data transmission display method and driver chip
  • A single-line LED data transmission display method and driver chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] In this embodiment, the LED driver chips are connected in cascade, and the schematic diagram is as follows: image 3 As shown, the input data sent by the sending card is connected to the input terminal din of the first chip chip1, the output terminal dout of the first chip chip1 is connected to the input terminal din of the second chip chip2, and the output terminal dout of the second chip chip2 is connected to The input terminal din of the third chip chip3, and then the input terminal din of each chip is connected to the output terminal dout of the previous chip, and each LED driver chip transmits data through this cascade connection.

[0036] Such as figure 2 As shown, the data processing module of the driver chip includes a data identification module, a data storage module, a data shaping transmission module and a data display module; the data sent to the LED driver chip is processed by the data processing module in the chip, and the data is sequentially passed thro...

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 a single-line LED data transmission and display method and a driving chip, belonging to the field of LED driving circuits. Aiming at the circuits existing in the prior art, when the transmission data is far away or the number of cascades is large, it is easy to cause signal distortion or shaping error. The present invention provides a single-line LED data transmission and display method and a driving chip. The transmitted data format Adjust the display data and current data of each lamp bead to be transmitted separately to realize independent adjustment of the lamp bead current; the shaping mechanism in the data processing module avoids the interference caused by glitches, and when the effective levels of 0 yards and 1 yards are close Can distinguish; realize the transmission requirements of large data transmission distance and many series series, and can also independently adjust the current of each lamp bead, configure register data and check code data, display data and verify, adjust the overall display effect and other characteristics, improve Improve the flexibility, anti-interference and accuracy of the system.

Description

technical field [0001] The invention relates to the field of LED drive circuits, and more specifically, to a single-line LED data transmission and display method and a drive chip. Background technique [0002] In the single-line high-speed data transmission method of LED driver integrated circuit display data, the DMX-512 communication protocol or similar transmission methods are mainly used. This is a single-line data transmission method, that is, the output from the upper level to the lower level The direct drive mode of the primary input is used for cascade transmission. Now more and more outdoor large screens are used, so in future applications, it will be more and more emphasized that the transmission distance between adjacent LEDs should be longer, and a longer transmission distance will cause a larger signal distortion. , so it also poses a huge challenge to the accuracy of data transmission. [0003] In the actual application process, due to the inconsistency in th...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/345H05B45/20H05B45/10
Inventor 张若平宋霄陈君杰陈寒韦正兴冷佳伟蒋召宇何书专
Owner PURESEMI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com