JPS5647152A - Data compression and transmission system for on-off signal - Google Patents

Data compression and transmission system for on-off signal

Info

Publication number
JPS5647152A
JPS5647152A JP12297979A JP12297979A JPS5647152A JP S5647152 A JPS5647152 A JP S5647152A JP 12297979 A JP12297979 A JP 12297979A JP 12297979 A JP12297979 A JP 12297979A JP S5647152 A JPS5647152 A JP S5647152A
Authority
JP
Japan
Prior art keywords
correlation
data
cycle
born
data compression
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
JP12297979A
Other languages
Japanese (ja)
Inventor
Fumio Aoki
Hiroshi Hosokawa
Kunitaro Kikuchi
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
Tokyo Electric Power Company Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
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 Tokyo Electric Power Co Inc, Matsushita Electric Industrial Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP12297979A priority Critical patent/JPS5647152A/en
Publication of JPS5647152A publication Critical patent/JPS5647152A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:To perform data compression and transmission with efficiency by equally dividing ON-OFF data to a random data length in terms of time and by bearing correlation among equally divided data lengths as one cycle. CONSTITUTION:Sampled values that correspond to a reference cycle and corresponding cycles are compared mutually; when they all agree, correlation is decided (index 0) and when even one of them disagrees, no correlation is decided (index 1). Namely, when Si<m>-Si<n>=0, data of the m-th cycle and that of the n-th cycle bear correlation and when not, no correlation is born. As shown in the figure, only when no correlation is born, data of the cycle are all transmitted when the correlation is born, data are never sent.
JP12297979A 1979-09-25 1979-09-25 Data compression and transmission system for on-off signal Pending JPS5647152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12297979A JPS5647152A (en) 1979-09-25 1979-09-25 Data compression and transmission system for on-off signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12297979A JPS5647152A (en) 1979-09-25 1979-09-25 Data compression and transmission system for on-off signal

Publications (1)

Publication Number Publication Date
JPS5647152A true JPS5647152A (en) 1981-04-28

Family

ID=14849299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12297979A Pending JPS5647152A (en) 1979-09-25 1979-09-25 Data compression and transmission system for on-off signal

Country Status (1)

Country Link
JP (1) JPS5647152A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242607A (en) * 1975-09-29 1977-04-02 Kobe Steel Ltd Method of and apparatus for improving cohesive soil through continuous solidification
JPS5333213A (en) * 1976-09-09 1978-03-29 Comp Generale Electricite Process and apparatus for bonding layer to internal surface of a pipe constructed of silica
JPS5346211A (en) * 1976-10-08 1978-04-25 Matsushita Electric Ind Co Ltd Data compressing unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242607A (en) * 1975-09-29 1977-04-02 Kobe Steel Ltd Method of and apparatus for improving cohesive soil through continuous solidification
JPS5333213A (en) * 1976-09-09 1978-03-29 Comp Generale Electricite Process and apparatus for bonding layer to internal surface of a pipe constructed of silica
JPS5346211A (en) * 1976-10-08 1978-04-25 Matsushita Electric Ind Co Ltd Data compressing unit

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