JPS5723346A - Code approving circuit - Google Patents

Code approving circuit

Info

Publication number
JPS5723346A
JPS5723346A JP9792480A JP9792480A JPS5723346A JP S5723346 A JPS5723346 A JP S5723346A JP 9792480 A JP9792480 A JP 9792480A JP 9792480 A JP9792480 A JP 9792480A JP S5723346 A JPS5723346 A JP S5723346A
Authority
JP
Japan
Prior art keywords
code
circuit
supplied
input signal
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9792480A
Other languages
Japanese (ja)
Inventor
Eiichiro Murata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9792480A priority Critical patent/JPS5723346A/en
Publication of JPS5723346A publication Critical patent/JPS5723346A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/241—Testing correct operation using pseudo-errors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To approve an error rate of a code, etc., and to derive a transmission performance by a simple circuit configuration, by shifting in order both an input signal and a code having the same code structure as the input signal, and detecting a code correlation of parallel output signals, in an equipment for transmitting digital information. CONSTITUTION:A signal which has been inputted to a terminal 1 from a communication equipment is shaped by a waveform shaping circuit 2, is supplied to a shift register 3, also is supplied to a bit synchronizing signal detecting circuit 4, too, and generates a bit synchronizing signal which has synchronized with an output of the shaping circuit 2. On the other hand, a code having the same code structure as the input signal is generated by a pseudo noise code generating circuit 5, is shifted in order by a shift register 6, and is supplied to a code correlation detecting circuit 8 together with an output of the register 3. When both the shift outputs are in coincidence in their code structure, a lamp 9 is lighted. Furthermore, signals of coincidence and dissidence of the code, and signals of the circuit 8 and the circuit 4 are supplied to an operation processing circuit 11, a code error data is approved and is displayed on a display device 12.
JP9792480A 1980-07-16 1980-07-16 Code approving circuit Pending JPS5723346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9792480A JPS5723346A (en) 1980-07-16 1980-07-16 Code approving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9792480A JPS5723346A (en) 1980-07-16 1980-07-16 Code approving circuit

Publications (1)

Publication Number Publication Date
JPS5723346A true JPS5723346A (en) 1982-02-06

Family

ID=14205228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9792480A Pending JPS5723346A (en) 1980-07-16 1980-07-16 Code approving circuit

Country Status (1)

Country Link
JP (1) JPS5723346A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59188234A (en) * 1983-04-11 1984-10-25 Hitachi Ltd Semiconductor integrated circuit device and its manufacture
JPS61216520A (en) * 1985-03-04 1986-09-26 ラティス・セミコンダクター・コーポレイション Programmable logical apparatus
JPH05268070A (en) * 1992-07-31 1993-10-15 Hitachi Ltd Semiconductor integrated circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59188234A (en) * 1983-04-11 1984-10-25 Hitachi Ltd Semiconductor integrated circuit device and its manufacture
JPS61216520A (en) * 1985-03-04 1986-09-26 ラティス・セミコンダクター・コーポレイション Programmable logical apparatus
JPH05268070A (en) * 1992-07-31 1993-10-15 Hitachi Ltd Semiconductor integrated circuit

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