• Title/Summary/Keyword: Pager

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Implementation of a process control language for pager manufacturing (호출기 자동 생산 제어 프로그램 언어 구현)

  • Jeon, Se-Jung;Yi, Keon-Young
    • Proceedings of the KIEE Conference
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    • 1998.07g
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    • pp.2405-2407
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    • 1998
  • Implementation of a process control language for a pager manufacturing is dealt in this paper. The pager manufacturing process is consisted of a tune and an exam part. In the tune part, three capacitor trimmers are tuned to optimize the state of the pager. In the exam part, message receiving status with the arbitrary calling is tested using a vision system. The program has the ability to reuse the address discarded in the exam part when the, pager testing is not working properly even though there exist the processing gaps between two processes. The system is composed of a personal computer(PC586) and TEM-cells, Flex pager testers, an oscilloscope, a camera, and actuators. Visual Basic running on the Windows 95 is used to implement the control software which has the GUI to make an operator convenient. The validity of applying the completed program to practical machines, which are developing in the KITECH, is shown by using the virtual machine.

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Pager 기술동향 분석

  • Kim, Chang-Hui;Hwang, Geon;Choe, Tae-Gu
    • Electronics and Telecommunications Trends
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    • v.4 no.4
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    • pp.34-46
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    • 1989
  • Paging system이란 전화망 등의 전송매체를 통하여 Pager를 소지하고 있는 가입자에게 호출이나 데이터 서비스를 제공하는 것을 말한다. 국내의 경우 161.42MHz의 carrier frequency를 사용하여 전국을 8개의 지역권(1)으로 분할하여 Paging service를 제공하고 있다. 본고에서는 시스팀 차원이 아닌 단말기 차원에서 Pager의 구성부품들과 각 구성품의 기능들을 파악하였고 pager의 국내 생산 기술 현황을 조사 정리 하였다.

Design of POSCAG signal decoder for operating time improvement in pager (Pager 동작 시간 향상을 위한 POCSAG Signal Decoder의 설계)

  • 최종문;김영대;한정익
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.2
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    • pp.361-370
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    • 1997
  • In this paper, we designed POCSAG Signal Decoder to improve operating time in pager. We showed POCSAG Signal Pattern sent by transmitter and operation of this decoder. We also showed that the Pager using this decoder was equipped with Wide Area Signal Detection and designed the hardware which realizes this operation and implemented it with ASIC chip. As we inspected the function of the ASIC chip and tested the performance, we could find that the chip operated in low voltage and that power dissipation was low.

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Design and Implementation of a High Speed Pager Based on FLEX Protocol (FLEX 방식 고속 무선호출 단말기 설계 및 구현)

  • 오병문;이동원;김영철
    • Proceedings of the IEEK Conference
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    • 2000.11a
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    • pp.205-208
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    • 2000
  • In this paper, we have designed a pager based on the FLEX protocol. The pager consists of a decoder, a MCU, a SPI, and a User interface. The decoder contains the following blocks: synchronizer, de-interleaver, error corrector, packet builder. The decoded data is converted to SPI packets for communication between the MCU and the FLEX decoder. The host MCU is a RISC pipelined architecture, so it processes data at high speed and also sends messages to user interface. We have designed the proposed pager as structural modeling using VHDL language. Then, We simulated and synthesized it using tool of SYNOPSYS corporation.

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Design and Construction of Asymmetric Two-way Message Transmitting System Overlaid on TRS (비대칭 양방향 메시지 전송 시스템의 설계와 구성)

  • 전명연;안정근
    • The Journal of Information Technology
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    • v.3 no.2
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    • pp.87-95
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    • 2000
  • This paper studies on method about construction and design of two-way message system to overcome limit of one-way pager system. Method of two-way system construction is studied on using the present one-way pager system and configure system. Forward-link of proposed method is using the present one-way pager system. And Reverse-link of proposed method is used TRS and Beacon on pager. CTI(Computer Telephony Integration) is used to Call processing

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Design of POCSAG Receiver Interface Circuits for Wireless Remote Control using Pager System (페이져 시스템을 이용한 무선 원격제어용 POCSAG 수신기 인터페이스회로 설계)

  • Lee, Jae-Min
    • Journal of the Korean Society of Industry Convergence
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    • v.4 no.3
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    • pp.289-294
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    • 2001
  • In this paper a POCSAG receiver interface circuit for wireless remote control using pager system is presented. SM8212A and AT89C51 chips are used for the core of system design. The proposed system is able to communicate with computers through RS-232C interface, which enables users to manage the data from the pager system on computers in real time. Analysis of SM8212A for Ole algorithm of CPU control program is described. The hardware is implemented on a PCB and the control program is made by C++ and assembly language. The performance of designed system is confirmed by experiments using the TESCOM equipments.

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A location tracking scheme using embedded-pager PCS terminals (Pager 내장형 PCS 단말기를 이용한 location tracking 기법)

  • 장경훈;심재정;박정식;김덕진
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.34S no.3
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    • pp.1-11
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    • 1997
  • Since the radio spectrum is limited, future wireless system will have micro cellular architecture in order to provide multimedia traffic services on personal communicatons network. The small coverage area of micro cellular systems results in frequent hadnoffs and location updates. We focuse on network load and terminal power due to frequent location updates and propose a location tracking scheme using embedded-pager PCS terminals. The proposed scheme is expected to minimize theconsumption of PCS terminal powr and improve the receiving rate of callee because of the power saving mechanism and the embedded-pager PCS terminal. This paper proposes signaling flows among the network elements for the proposed location tracking scheme. The signaling flows are accomodated to not only the existed network architectures but alsothe ATM backbone network arcitecture. To verify the signaling flows, we used petri-Net model. The resutls show that the signaling flows are suitable to our proposed location tracking scheme.

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Trandency and Technical Standard of Two-ways Pagers (양방향무선호출의 동향 및 기술기준)

  • 최성호;박승근;정희창
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 1999.11a
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    • pp.93-97
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    • 1999
  • This paper describes an architecture platform and a key of features for a two-way pager system that will be commercially serviced in Korea, compares with it and other country's system, and analyzes the result. Also, 1 describes possible service features and new kinds of service for the two-way pager system. From the result of analysis, I presented a technical standard of radio quality for the two-way pager system.

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A Two-Way Communication Method for Smart Phone Integrated with Pager (무선호출기를 갖는 다기능 전화기의 양방향 통신방법)

  • 유장희;박태준
    • Proceedings of the IEEK Conference
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    • 1998.10a
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    • pp.487-490
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    • 1998
  • In this paper, we describe a method for two-way communication service for smart phone integrated with pager which receive various kinds of Internet service information and pushes this information into smart phone to make it available for Internet assess. In this method, the server can push the status data of message boxes into the smart phone and it makes connection to the server automatically. The proposed method will make it possible to manage and excange the information and resources in an efficient manner during idle time, and will provide the potential capabilities of developing a variety of new Internet services for the system.

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Two-way Pager

  • 천경준
    • Information and Communications Magazine
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    • v.14 no.3
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    • pp.87-97
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    • 1997
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