JPS5663646A - Data compression recording method of digital signal - Google Patents

Data compression recording method of digital signal

Info

Publication number
JPS5663646A
JPS5663646A JP14022179A JP14022179A JPS5663646A JP S5663646 A JPS5663646 A JP S5663646A JP 14022179 A JP14022179 A JP 14022179A JP 14022179 A JP14022179 A JP 14022179A JP S5663646 A JPS5663646 A JP S5663646A
Authority
JP
Japan
Prior art keywords
data
cycle
correlation
length
making
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
JP14022179A
Other languages
Japanese (ja)
Inventor
Kazuyuki Yokota
Mitsuaki Kamiharashi
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
Original Assignee
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14022179A priority Critical patent/JPS5663646A/en
Publication of JPS5663646A publication Critical patent/JPS5663646A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To effectively execute data compression recording and constitute an economical recording system by making the data length which has been obtained by equally dividing a digital data into optional length parts by time, making these parts one cycle, and making them correlate each other.
CONSTITUTION: Sampling is performed to the data length which has equally divided the reference cycle (m-cycle) and the cycle of a compression data (n-cycle) into the optional time length S1 mWS20 m and S1 nWS20 n, each corresponding sampling is compared, and it is decided that when each of them has all coincided, there is correlation, and on the other hand, when only one has not coincided, there is no correlation. In case of Si mWSi n=0 to all of i=1W20, a data of the m-th cycle and a data of the n-th cycle are considered to be correlated, and others are considered not to be correlated. In case when there is no correlation, a data which has no correlation, or a discrimination code of this data and a specific bit is recorded, and an original data is regenerated from this discrimination code.
COPYRIGHT: (C)1981,JPO&Japio
JP14022179A 1979-10-29 1979-10-29 Data compression recording method of digital signal Pending JPS5663646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14022179A JPS5663646A (en) 1979-10-29 1979-10-29 Data compression recording method of digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14022179A JPS5663646A (en) 1979-10-29 1979-10-29 Data compression recording method of digital signal

Publications (1)

Publication Number Publication Date
JPS5663646A true JPS5663646A (en) 1981-05-30

Family

ID=15263718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14022179A Pending JPS5663646A (en) 1979-10-29 1979-10-29 Data compression recording method of digital signal

Country Status (1)

Country Link
JP (1) JPS5663646A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017916A (en) * 1973-06-18 1975-02-25
JPS5487106A (en) * 1977-12-23 1979-07-11 Fujitsu Ltd Data compression method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017916A (en) * 1973-06-18 1975-02-25
JPS5487106A (en) * 1977-12-23 1979-07-11 Fujitsu Ltd Data compression method

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