KR940015824A - DSP (Digital Signal Processor) Algorithm Performance Test Circuit - Google Patents

DSP (Digital Signal Processor) Algorithm Performance Test Circuit Download PDF

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Publication number
KR940015824A
KR940015824A KR1019920025400A KR920025400A KR940015824A KR 940015824 A KR940015824 A KR 940015824A KR 1019920025400 A KR1019920025400 A KR 1019920025400A KR 920025400 A KR920025400 A KR 920025400A KR 940015824 A KR940015824 A KR 940015824A
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South Korea
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system board
transmission
filter
circuit
band filter
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KR1019920025400A
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Korean (ko)
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KR940011664B1 (en
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김창희
고재상
양충렬
정철오
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양승택
재단법인 한국전자통신연구소
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/22Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26Functional testing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

본 발명은 PC시스템 보드를 전화망에 연결하여 DSP 알고리즘의 성능을 시험하는 회로에 관한 것으로, 특히 CCITT V.22 bis 알고리즘의 성능시험회로에 관한 것이고, 디지탈 신호처리기와 자동이득 조절기를 갖는 PC시스템보드를 구비하여 CCITT V.22 bis 알고리즘의 성능을 시험하는 회로에 있어서, 상기 CP시스템보드의 아날로그 입력포트에 접속되어, 상기 자동이득 조절기와 함께 입력단을 통해 인가되는 수신신호의 레벨을 일정상태로 유지 시키는 가변이득 증폭기와, 상기 PC시스템보드의 아날로그 출력포트와 상기 가변이득 증폭기의 입력단에 접속되어, 모뎀이 호출상태일때 저대역 여파기가 송신경로상에 그리고 고대역 여파기는 수신경로상으로 설정되고, 모뎀이 응답상태일때 저대역 여파기는 수신경로상에 그리고 고대역 여파기는 송신경로상으로 설정되는 대역통과 여파기와, 상기 대역통과 여파기의 송신출력단에 접속되어, 송신신호의 레벨을 공중전화망에 송출가능하도록 신호레벨을 조정하는 송신출력 감쇄기와, 상기 송신출력 감쇄기의 출력단과 상기 대역통과 여파기의 수신입력단에 접속되어, 전화선과 모뎀이 접속하여 데이타 송신상태로 절환하는 선로접속부와, 상기 PC시스템보드의 디지탈 입출력 확장커넥터에 접속되어 상기 회로블럭에 제어신호를 제공하고, 아울러 데이타 단말기와 상기 PC시스템보드와의 접속을 위해 제어신호를 제공하는 제어부를 포함하는 것을 특징으로 하는 DSP 알고리즘 성능 시험회로이다.The present invention relates to a circuit for testing the performance of a DSP algorithm by connecting a PC system board to a telephone network, and more particularly, to a performance test circuit of a CCITT V.22 bis algorithm, and a PC system board having a digital signal processor and an automatic gain controller. A circuit for testing the performance of the CCITT V.22 bis algorithm, comprising: a circuit connected to an analog input port of the CP system board and maintaining a level of a received signal applied through an input terminal together with the automatic gain controller; Connected to the variable gain amplifier, the analog output port of the PC system board and the input of the variable gain amplifier, the low band filter is set on the transmission path and the high band filter is on the reception path when the modem is in a call state. When the modem is in response, the low band filter is placed on the receive path and the high band filter is placed on the transmit path. A band pass filter, a transmission output attenuator connected to a transmission output end of the band pass filter and adjusting a signal level to transmit a level of the transmission signal to a public telephone network, and an output end of the transmission output attenuator and the band pass filter. A line connection portion connected to a receiving input terminal and connected to a telephone line and a modem to switch to a data transmission state, and connected to a digital input / output extension connector of the PC system board to provide a control signal to the circuit block, and to provide a data terminal and the PC. DSP algorithm performance test circuit comprising a control unit for providing a control signal for connection to the system board.

Description

디에스피(DSP : digital signal processor) 알고리즘 성능 시험회로DSP (Digital Signal Processor) Algorithm Performance Test Circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 DSP 알고리즘 성능 시험회로의 기능블럭도, 제3도는 제2도의 송신출력 감쇄기의 상세회로도.2 is a functional block diagram of the DSP algorithm performance test circuit of the present invention, and FIG. 3 is a detailed circuit diagram of the transmission output attenuator of FIG.

Claims (2)

디지탈 신호처리기(digital signal processor)와 자동이득 조절기를 갖는 PC시스템 보드(20)를 구비하여 CCITT V.22 bis 알고리즘의 성능을 시험하는 회로에 있어서, 상기 PC 시스템보드(20)의 아날로그 입력포트(21)에 접속되어, 상기 자동이득 조절기와 함께 입력단을 통해 인가되는 수신신호의 레벨을 일정상태로 유지 시키는 가변이득 증폭기(30)와, 상기 PC시스템보드(20)의 아날로그 출력포트(22)와 상기 가변이득 증폭기(30)의 입력단에 접속되어, 모뎀이 호출상태일때 저대역 여파기가 송신경로상에 그리고 고대역 여파기는 수신경로상으로 설정되고, 모뎀이 응답상태일때 저대역 여파기는 수신경로상에 그리고 고대역 여파기는 송신경로상으로 설정되는 대역통과 여파기(31)와, 상기 대역통과 여파기(31)의 송신출력단에 접속되어, 송신신호의 레벨을 공중전화망에 송출가능하도록 신호레벨을 조정하는 송신출력 감쇄기(32)와, 상기 송신출력 감쇄기(32)의 출력단과 상기 대역통과 여파기(31)의 수신입력단에 접속되어, 전화선과 모뎀이 접속하여 데이타 송신상태로 절환하는 선로접속부(33)와, 상기 PC 시스템보드(20)의 디지탈 입출력 확장커넥터에 접속되어 상기 회로블럭(30∼33)에 제어신호를 제공하고, 아울러 데이타 단말기와 상기 PC 시스템보드(20)와의 접속을 위해 제어신호를 제공하는 제어부(34∼35)를 포함하는 것을 특징으로 하는 DSP 알고리즘 성능 시험회로.In a circuit for testing the performance of the CCITT V.22 bis algorithm with a PC system board 20 having a digital signal processor and an automatic gain controller, an analog input port of the PC system board 20 And a variable gain amplifier 30 for maintaining a level of a received signal applied through an input terminal together with the automatic gain controller, and an analog output port 22 of the PC system board 20. Connected to the input of the variable gain amplifier 30, the low band filter is set on the transmission path when the modem is in a call state and the high band filter is on the reception path when the modem is in a call state, and the low band filter is set on the reception path when the modem is in the answer state. And the high band filter is connected to the band pass filter 31 set on the transmission path and the transmission output terminal of the band pass filter 31, and transmits the level of the transmission signal to the public telephone network. A transmission output attenuator 32 that adjusts the signal level so that it can be outputted; and an output terminal of the transmission output attenuator 32 and a reception input terminal of the band pass filter 31; It is connected to the line connection part 33 to switch and the digital input / output expansion connector of the said PC system board 20, and provides a control signal to the said circuit blocks 30-33, and also the data terminal and the said PC system board 20. And a control unit (34 to 35) for providing a control signal for connection to the DSP algorithm. 제1항에 있어서, 상기 대역통과 여파기(31)는 중심주파수가 2400Hz이고 대역폭이 600Hz인 고대역 여파기와, 중신주파수가 1200Hz이고 대역폭이 600Hz인 저대역 여파기를 구비한 것을 특징으로 하는 DSP 알고리즘 성능 시험회로.2. The DSP algorithm according to claim 1, wherein the bandpass filter 31 has a high band filter having a center frequency of 2400 Hz and a bandwidth of 600 Hz, and a low band filter having a central frequency of 1200 Hz and a bandwidth of 600 Hz. Test circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920025400A 1992-12-24 1992-12-24 Dsp algorithm performance test circuit KR940011664B1 (en)

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Application Number Priority Date Filing Date Title
KR1019920025400A KR940011664B1 (en) 1992-12-24 1992-12-24 Dsp algorithm performance test circuit

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KR940015824A true KR940015824A (en) 1994-07-21
KR940011664B1 KR940011664B1 (en) 1994-12-23

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