JPS57141161A - Detector for digital information - Google Patents

Detector for digital information

Info

Publication number
JPS57141161A
JPS57141161A JP56027345A JP2734581A JPS57141161A JP S57141161 A JPS57141161 A JP S57141161A JP 56027345 A JP56027345 A JP 56027345A JP 2734581 A JP2734581 A JP 2734581A JP S57141161 A JPS57141161 A JP S57141161A
Authority
JP
Japan
Prior art keywords
signal
clamping
clock signal
frequency range
shaping
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.)
Granted
Application number
JP56027345A
Other languages
Japanese (ja)
Other versions
JPH037176B2 (en
Inventor
Akifumi Ide
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 JP56027345A priority Critical patent/JPS57141161A/en
Publication of JPS57141161A publication Critical patent/JPS57141161A/en
Publication of JPH037176B2 publication Critical patent/JPH037176B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/063—Setting decision thresholds using feedback techniques only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To reduce errors in detecting a modulated signal which contains low frequency range components, by holding and shaping a signal passed through a clamping circuit and a comparing circuit, with a clock signal which synchronizes with the output of the comparing circuit. CONSTITUTION:Through a transmission line which causes the deterioration of DC components and low-frequency range components, data is transmitted by a modulation system, such as NRZ, which allows the low frequency range component to be included. A signal to be detected is supplied to a comparator 21 through a clamping device 20 to be compared with a reference voltage 22. The output signal of the comparator 21 is supplied to a clock signal generator 23 and a shaping device 24 composed of a DFF to be shaped by the shaping device with a clock signal which synchronizes with a transmitted train of data. The output signal of the shaping device 24 is applied to a demodulator and also to a clamping pulse generator 26 together with the clock signal, thereby generating clamping pulse which control the clamping device 20.
JP56027345A 1981-02-25 1981-02-25 Detector for digital information Granted JPS57141161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56027345A JPS57141161A (en) 1981-02-25 1981-02-25 Detector for digital information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027345A JPS57141161A (en) 1981-02-25 1981-02-25 Detector for digital information

Publications (2)

Publication Number Publication Date
JPS57141161A true JPS57141161A (en) 1982-09-01
JPH037176B2 JPH037176B2 (en) 1991-01-31

Family

ID=12218451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027345A Granted JPS57141161A (en) 1981-02-25 1981-02-25 Detector for digital information

Country Status (1)

Country Link
JP (1) JPS57141161A (en)

Also Published As

Publication number Publication date
JPH037176B2 (en) 1991-01-31

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