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JPS56138351A - Identifier for multivalue signal - Google Patents

Identifier for multivalue signal

Info

Publication number
JPS56138351A
JPS56138351A JP4178880A JP4178880A JPS56138351A JP S56138351 A JPS56138351 A JP S56138351A JP 4178880 A JP4178880 A JP 4178880A JP 4178880 A JP4178880 A JP 4178880A JP S56138351 A JPS56138351 A JP S56138351A
Authority
JP
Japan
Prior art keywords
analog signal
sample
hold
local decoder
low
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
JP4178880A
Other languages
Japanese (ja)
Other versions
JPS6322501B2 (en
Inventor
Shinichi Koike
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4178880A priority Critical patent/JPS56138351A/en
Publication of JPS56138351A publication Critical patent/JPS56138351A/en
Publication of JPS6322501B2 publication Critical patent/JPS6322501B2/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
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To simplify the constitution, without the necessity of externally mounted DA converter for quantitized feedback, by adding the sample hold circuit to the local analog signal output section for the local decoder of AD converter. CONSTITUTION:The input analog signal (a) is in sample-hold at the sample holding circuit 32, and this is converted into digital signal through the local decoder 34 from the voltage comparator 33. The decoded analog signal (b) is fed back from the local decoder 34 to the voltage comparator 33. On the other hand, the decoded analog signal (b) is sample-hold at the sample hold circuit 38, it is fed back to the input analog signal (a) at the adder 37 via the low-pass filter 36 to compensate the low-frequency distortion. Thus, the quantitized feedback type multivalue signal identifier of low cost can be formed.
JP4178880A 1980-03-31 1980-03-31 Identifier for multivalue signal Granted JPS56138351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4178880A JPS56138351A (en) 1980-03-31 1980-03-31 Identifier for multivalue signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4178880A JPS56138351A (en) 1980-03-31 1980-03-31 Identifier for multivalue signal

Publications (2)

Publication Number Publication Date
JPS56138351A true JPS56138351A (en) 1981-10-28
JPS6322501B2 JPS6322501B2 (en) 1988-05-12

Family

ID=12618080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4178880A Granted JPS56138351A (en) 1980-03-31 1980-03-31 Identifier for multivalue signal

Country Status (1)

Country Link
JP (1) JPS56138351A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6068748A (en) * 1983-09-24 1985-04-19 Toshiba Corp Signal identifying device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323553A (en) * 1976-08-18 1978-03-04 Toshiba Corp Encoder circu it
JPS5389608A (en) * 1977-01-18 1978-08-07 Nec Corp Multilevel code transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323553A (en) * 1976-08-18 1978-03-04 Toshiba Corp Encoder circu it
JPS5389608A (en) * 1977-01-18 1978-08-07 Nec Corp Multilevel code transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6068748A (en) * 1983-09-24 1985-04-19 Toshiba Corp Signal identifying device

Also Published As

Publication number Publication date
JPS6322501B2 (en) 1988-05-12

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