JPS5665312A - Data converting circuit - Google Patents

Data converting circuit

Info

Publication number
JPS5665312A
JPS5665312A JP13966179A JP13966179A JPS5665312A JP S5665312 A JPS5665312 A JP S5665312A JP 13966179 A JP13966179 A JP 13966179A JP 13966179 A JP13966179 A JP 13966179A JP S5665312 A JPS5665312 A JP S5665312A
Authority
JP
Japan
Prior art keywords
signal
word
continuous
minimum number
data
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.)
Granted
Application number
JP13966179A
Other languages
Japanese (ja)
Other versions
JPS6348106B2 (en
Inventor
Yasuhiro Fujimori
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP13966179A priority Critical patent/JPS5665312A/en
Publication of JPS5665312A publication Critical patent/JPS5665312A/en
Publication of JPS6348106B2 publication Critical patent/JPS6348106B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)
  • Color Television Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Dc Digital Transmission (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE: To prevent the generation of error patterns by assigning a word signal, consisting of a minimum continuous number of code symbols for the conversion word of a reference step of video data by using a conversion word signal, whose DC level is zero, for block encoding.
CONSTITUTION: A color video signal is supplied to data converting circuit 2, where it is converted into a digital signal, which is recorded by recording head HR after passing through amplifier 5. The block of the color video signal has synchronizing signal SYNC, identification signal ID, address signal AD, data, a CRC code, etc. Synchronizing signal SYNC is used for synchronization in reproduction and among zero-disparity words ZD, two ZD words having a minimum number of error patterns, i.e. a minimum number of continuous 1 or 0 are selected. As to video data, an intermediate step among steps appearing frequently is regarded as reference one and for the conversion word of this reference step, a word signal having a minimum number of continuous code symbols is assigned. Therefore, this constitution can prevent the generation of an error pattern.
COPYRIGHT: (C)1981,JPO&Japio
JP13966179A 1979-10-29 1979-10-29 Data converting circuit Granted JPS5665312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13966179A JPS5665312A (en) 1979-10-29 1979-10-29 Data converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13966179A JPS5665312A (en) 1979-10-29 1979-10-29 Data converting circuit

Publications (2)

Publication Number Publication Date
JPS5665312A true JPS5665312A (en) 1981-06-03
JPS6348106B2 JPS6348106B2 (en) 1988-09-27

Family

ID=15250461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13966179A Granted JPS5665312A (en) 1979-10-29 1979-10-29 Data converting circuit

Country Status (1)

Country Link
JP (1) JPS5665312A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829280A (en) * 1981-08-14 1983-02-21 Sony Corp Coding method for television signal
JPS59193653A (en) * 1983-04-15 1984-11-02 Matsushita Electric Ind Co Ltd Digital modulating system
JPS59193654A (en) * 1983-04-15 1984-11-02 Matsushita Electric Ind Co Ltd Digital modulating system
JPS59218068A (en) * 1983-05-25 1984-12-08 Matsushita Electric Ind Co Ltd Digital modulating method
JPS60143092A (en) * 1983-12-29 1985-07-29 Matsushita Electric Ind Co Ltd Digital signal recording method of color video signal
JPS6199419A (en) * 1984-10-20 1986-05-17 Canon Inc Predictive encoding system
JPS62136132A (en) * 1985-12-10 1987-06-19 Hitachi Ltd Method and apparatus for modulating digital data
JPS62243425A (en) * 1986-04-16 1987-10-23 Canon Inc Audio signal coding system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158135A (en) * 1977-07-14 1979-12-13 Indep Broadcasting Authority Digital processor and system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158135A (en) * 1977-07-14 1979-12-13 Indep Broadcasting Authority Digital processor and system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829280A (en) * 1981-08-14 1983-02-21 Sony Corp Coding method for television signal
JPS59193653A (en) * 1983-04-15 1984-11-02 Matsushita Electric Ind Co Ltd Digital modulating system
JPS59193654A (en) * 1983-04-15 1984-11-02 Matsushita Electric Ind Co Ltd Digital modulating system
JPS59218068A (en) * 1983-05-25 1984-12-08 Matsushita Electric Ind Co Ltd Digital modulating method
JPS60143092A (en) * 1983-12-29 1985-07-29 Matsushita Electric Ind Co Ltd Digital signal recording method of color video signal
JPS6199419A (en) * 1984-10-20 1986-05-17 Canon Inc Predictive encoding system
JPS62136132A (en) * 1985-12-10 1987-06-19 Hitachi Ltd Method and apparatus for modulating digital data
JPS62243425A (en) * 1986-04-16 1987-10-23 Canon Inc Audio signal coding system

Also Published As

Publication number Publication date
JPS6348106B2 (en) 1988-09-27

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