JPS55123262A - Decoding circuit - Google Patents

Decoding circuit

Info

Publication number
JPS55123262A
JPS55123262A JP3058179A JP3058179A JPS55123262A JP S55123262 A JPS55123262 A JP S55123262A JP 3058179 A JP3058179 A JP 3058179A JP 3058179 A JP3058179 A JP 3058179A JP S55123262 A JPS55123262 A JP S55123262A
Authority
JP
Japan
Prior art keywords
bits
code
bit
order
codes
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
JP3058179A
Other languages
Japanese (ja)
Inventor
Masamichi Kawakami
Noriyoshi Ogata
Hiroyuki Hayazaki
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP3058179A priority Critical patent/JPS55123262A/en
Publication of JPS55123262A publication Critical patent/JPS55123262A/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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • H03M7/425—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory for the decoding process only

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)

Abstract

PURPOSE:To make it possible to use a memory of small address capacity by reading the number of run length by using a parallel conversion output of at least low- order N bits of a code signal as an address assignment input. CONSTITUTION:As for a code signal of the code constitution of a special code signal, such as demodified Hoffman MH codes, namely, the longest bit number (M; a natural number), only low-order bits (N; a natural number smaller than M) change in code and bits higher than the N-th bit have numbers ''0'' or ''1'' only increasing or decreasing within the range of N+1 to M. Namely, 2nd shift register 6 uses 8- bit one and the number of bits of an inputted MH code is counted by 1st 4-bit counter 9 because codes of only eight low-order bits of MH codes change while the number of ''0'''s of the other high-order digits only increases or decreases, and even the MH code of the longest length has thirteen bits and can sufficiently be binary-displayed by only four bits.
JP3058179A 1979-03-15 1979-03-15 Decoding circuit Pending JPS55123262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3058179A JPS55123262A (en) 1979-03-15 1979-03-15 Decoding circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3058179A JPS55123262A (en) 1979-03-15 1979-03-15 Decoding circuit

Publications (1)

Publication Number Publication Date
JPS55123262A true JPS55123262A (en) 1980-09-22

Family

ID=12307808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3058179A Pending JPS55123262A (en) 1979-03-15 1979-03-15 Decoding circuit

Country Status (1)

Country Link
JP (1) JPS55123262A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921747A (en) * 1972-06-21 1974-02-26
JPS5169912A (en) * 1974-12-16 1976-06-17 Olympus Optical Co

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921747A (en) * 1972-06-21 1974-02-26
JPS5169912A (en) * 1974-12-16 1976-06-17 Olympus Optical Co

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