JPS56115048A - Code converting circuit - Google Patents

Code converting circuit

Info

Publication number
JPS56115048A
JPS56115048A JP1762380A JP1762380A JPS56115048A JP S56115048 A JPS56115048 A JP S56115048A JP 1762380 A JP1762380 A JP 1762380A JP 1762380 A JP1762380 A JP 1762380A JP S56115048 A JPS56115048 A JP S56115048A
Authority
JP
Japan
Prior art keywords
bits
code
delivered
nonlinear
bit
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
JP1762380A
Other languages
Japanese (ja)
Inventor
Takao Takeuchi
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 JP1762380A priority Critical patent/JPS56115048A/en
Publication of JPS56115048A publication Critical patent/JPS56115048A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/50—Conversion to or from non-linear codes, e.g. companding

Abstract

PURPOSE:To increase the converting speed with a reduction of power consumption and at the same time facilitate an easy LSI formation and its combined use at the mu side and the A side, by giving a combination only to the logic ICs in case the linear code is converted into the nonlinear code. CONSTITUTION:The 14 bits of linear codes are supplied to the terminals 41-54, and the bit of the terminal 41 is delivered to the terminal 55 in the form of a nonlinear code. The other bits are added 56 to the set constant 57. The higher 8 bits of the addition outputs are taken into the coding circuit 58, and the position of the highest-rank bit among the bits of value 1 is binary-coded with 3 bits. The output of the circuit 58 is delivered in the form of a nonlinear code as well as given to the selection circuit 59, and the 4 bits following the highest-rank bit of value 1 are taken out to be delivered in the form of the nonlinear codes. The circuits 58 and 59 are constituted by combining the logic ICs.
JP1762380A 1980-02-15 1980-02-15 Code converting circuit Pending JPS56115048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1762380A JPS56115048A (en) 1980-02-15 1980-02-15 Code converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1762380A JPS56115048A (en) 1980-02-15 1980-02-15 Code converting circuit

Publications (1)

Publication Number Publication Date
JPS56115048A true JPS56115048A (en) 1981-09-10

Family

ID=11948989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1762380A Pending JPS56115048A (en) 1980-02-15 1980-02-15 Code converting circuit

Country Status (1)

Country Link
JP (1) JPS56115048A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596638A (en) * 1982-07-02 1984-01-13 Sony Corp Signal conversion circuit
JPS59161944A (en) * 1983-02-23 1984-09-12 ジ−メンス・アクチエンゲゼルシヤフト Dpcm coder quantizing circuit
JPS6054537A (en) * 1983-09-05 1985-03-29 Sony Corp Digital signal transmitting method
JPS62245823A (en) * 1986-04-18 1987-10-27 Oki Electric Ind Co Ltd Linear/nonlinear code converting method
JPH02149131A (en) * 1988-11-30 1990-06-07 Hitachi Cable Ltd Digital type data compression method
WO1991011048A1 (en) * 1990-01-20 1991-07-25 Mitsubishi Denki Kabushiki Kaisha Digital differential relay system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52150921A (en) * 1976-06-11 1977-12-15 Hitachi Ltd Digital compressor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52150921A (en) * 1976-06-11 1977-12-15 Hitachi Ltd Digital compressor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596638A (en) * 1982-07-02 1984-01-13 Sony Corp Signal conversion circuit
JPH0479181B2 (en) * 1982-07-02 1992-12-15 Sony Corp
JPS59161944A (en) * 1983-02-23 1984-09-12 ジ−メンス・アクチエンゲゼルシヤフト Dpcm coder quantizing circuit
JPS6054537A (en) * 1983-09-05 1985-03-29 Sony Corp Digital signal transmitting method
JPH0535612B2 (en) * 1983-09-05 1993-05-27 Sony Corp
JPS62245823A (en) * 1986-04-18 1987-10-27 Oki Electric Ind Co Ltd Linear/nonlinear code converting method
JP2530817B2 (en) * 1986-04-18 1996-09-04 沖電気工業株式会社 Linear / non-linear code conversion method and conversion circuit
JPH02149131A (en) * 1988-11-30 1990-06-07 Hitachi Cable Ltd Digital type data compression method
WO1991011048A1 (en) * 1990-01-20 1991-07-25 Mitsubishi Denki Kabushiki Kaisha Digital differential relay system

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