• Title/Summary/Keyword: Syncronization Module

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Design of Synchronization_Word Generator in a Bluetooth System (블루투스 동기워드 생성기의 구현)

  • Hwang, Sun-Won;Cho, Sung;Ahn, Jin-Woo;Lee, Sang-Hoon;Kim, Seong-Jeen
    • Proceedings of the IEEK Conference
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    • 2003.07a
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    • pp.214-217
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    • 2003
  • In this paper, we deal with implementing design for a correlator access code generator module which they are used for setting up a connection between units, a packet decision, a clock syncronization, by FPGA. The orrelator module which is composed of the Wallace Tree's CSA and threshold value decision device decides useful a packet and syncronizes a clock, after it correlates an input signal of 1 Mbps transmission rate by a sliding window. An access code generator module which is composed of a BCH (Bose-Chadhuri-Hocquenghem) cyclic encoder and control device was designed according as a four steps' generation process proposed in the bluetooth standard. The pseudo random sequence which solves syncronization problem saved a voluntary device Proposed the module was designed by VHDL. An simulation and test are inspected by Xilinx FPGA.

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A Study on the In-Process Measurement of Rotary Body by Optical Technique (광학적 기법을 이용한 회전체 인프로세스 측정에 관한 연구)

  • So, Eui-Yeorl;Im, Young-Ho;Ryu, Bong-Hwan
    • Journal of the Korean Society for Precision Engineering
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    • v.13 no.5
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    • pp.148-156
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    • 1996
  • Automatic product system is gradually increasing according to development of industrial society. On-line measurement makes a important role in view of economic and effective side in industrial product system. Syncronization system is developed to measure screw thread which is rotating. In-process measuring of rotating body have a lot of difficuties even thoufht using various method containing high speed camera. So, now we suggest one of the new method which is not so expansive. In this study, digital value was produced through the image processing algorithm from acquired orignal image. As a result, we have a good agreement between measuring values calculated from image conture and measuring values acquired from profile project by means of experiment, respectively.

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