Title :
Research of data bidirectional USB transfer technology based on MicroBlaze
Author :
Yao, Qinghua ; Cao, Miao
Author_Institution :
Changchun Univ. of Technol., Changchun, China
Abstract :
The obtained data are compressed and stored in hard disk at real time and uploaded to the personal computer simultaneously during the remote sensing of Spacecraft. ISP1761,which is USB chip with OTG(on-the-go) is introduced to realize protocol transform, and control host and Peripheral to switch. It dominates up and down high speed data transfer for settling the contradiction of duplicative roles that is host and peripheral of data compression board in the USB transfer. Virtex4 FPGA chip which contains MicroBlaze is adopted to fulfill initialization and DMA data transfer according to the capability of ISP1761. Data transfer is achieved at the speed of 46.9Mbps after the image is compressed by JPEG2000.
Keywords :
aerospace engineering; data compression; field programmable gate arrays; file organisation; hard discs; image coding; microcomputers; microprocessor chips; peripheral interfaces; remote sensing; space vehicles; DMA data transfer; ISP1761; MicroBlaze; USB chip; Virtex4 FPGA chip; bidirectional USB transfer technology; data compression; hard disk; high speed data transfer; personal computer; protocol transform; remote sensing; Buildings; Charge coupled devices; ISO; Image coding; Random access memory; Transform coding; Universal Serial Bus; ISP1761; MicroBlaze; OTG; USB transfer;
Conference_Titel :
Computer, Mechatronics, Control and Electronic Engineering (CMCE), 2010 International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4244-7957-3
DOI :
10.1109/CMCE.2010.5610295
