JPS54128605A - Additional system of error check bit - Google Patents

Additional system of error check bit

Info

Publication number
JPS54128605A
JPS54128605A JP3610078A JP3610078A JPS54128605A JP S54128605 A JPS54128605 A JP S54128605A JP 3610078 A JP3610078 A JP 3610078A JP 3610078 A JP3610078 A JP 3610078A JP S54128605 A JPS54128605 A JP S54128605A
Authority
JP
Japan
Prior art keywords
bit
sets
information
groups
point
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
JP3610078A
Other languages
Japanese (ja)
Inventor
Meiki Yahata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3610078A priority Critical patent/JPS54128605A/en
Publication of JPS54128605A publication Critical patent/JPS54128605A/en
Pending legal-status Critical Current

Links

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  • Error Detection And Correction (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE: To detect the error in information bits, by assigning d1,d2...dr by every one bit to the r sets of groups Gn-p+i...Gn with the code having known dode length n, information point n-r and inspection point r and by taking them as the check bit for the information bits a1,a2...am.
CONSTITUTION: The handle decoder 12 is grouped into n sets of groups G1,G2...Gn so that the information bits of m sets a1,a2...am having different weighting for a part or all can constitute one group with less number to greater weighting bit. Further, the hamming coder 11 assigns d1,d2...dr by one bit to the r sets of groups Gn-p+i... Gn corresponding to the inspection point with the code having known code length n, information point n-r, and inspection point r according to the representative bits e1,e2...en-r and is determined with di so that "1" and "0" determined with the odd or even number of "1" or "0" can be in agreement with fi when one group is made with Gn-r+i and di(i=1,2...r). This di can detect the error in the information bit.
COPYRIGHT: (C)1979,JPO&Japio
JP3610078A 1978-03-30 1978-03-30 Additional system of error check bit Pending JPS54128605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3610078A JPS54128605A (en) 1978-03-30 1978-03-30 Additional system of error check bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3610078A JPS54128605A (en) 1978-03-30 1978-03-30 Additional system of error check bit

Publications (1)

Publication Number Publication Date
JPS54128605A true JPS54128605A (en) 1979-10-05

Family

ID=12460338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3610078A Pending JPS54128605A (en) 1978-03-30 1978-03-30 Additional system of error check bit

Country Status (1)

Country Link
JP (1) JPS54128605A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57136833A (en) * 1981-02-17 1982-08-24 Sony Corp Time-division multiplex data transmitting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57136833A (en) * 1981-02-17 1982-08-24 Sony Corp Time-division multiplex data transmitting method
JPH0219656B2 (en) * 1981-02-17 1990-05-02 Sony Corp

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