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Research on Control of Wireless LED Display Screen Based on GSM

Author: ZhaoLi
Tutor: CuiDuWu
School: Xi'an University of Technology
Course: Computer Applications
Keywords: LED display Embedded Systems Short Message Service Agreement GSM
CLC: TN873
Type: Master's thesis
Year: 2009
Downloads: 92
Quote: 0
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Traditional LED display through a wired access to information, which greatly constrained the scope of application of the screen , increasing the project cost , lack of flexibility and configuration costs and administrative expenses also increased . LED display wireless remote control can receive text messages through GSM SMS , with good earnings prospects , the LED display dream of anytime, anywhere access to information , which greatly expand the applications of the LED display . Designed by GSM SMS remote control asynchronous wireless LED display control system . Completed the following works: ; elaborate design method based on embedded LINUX operating system , drivers and the application of the upper the TC35 module interface characteristics and main functions , as well as applications of AT commands , SMS PDU codec in implementations in embedded systems , the Chinese character coding structure . Basis of GSM short message as a data transmission medium to achieve the feasibility of remote control LED display applications ARM9 processor the S3C2410X and the CPLD chip as the core control LED display system . Specially designed in order to save the storage space of the next machine is suitable for LED display , refresh the dot matrix font , the font does not increase the storage space of Chinese characters , but effective display accuracy . In order to solve the security issues of the SMS , the design of a new text watermarking algorithm, which is used to encrypt SMS mobile control LED display . Developed a remote control display mobile phone short message application layer protocol LEDC, the agreement is displayed via SMS remote control LED display and display content . In order to save the lower storage space and CPU computing resources automatically preprocessed image , video new algorithm can be used to fit the screen correction in the host computer side will need to handle the display of pictures , video , and cuts.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display
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