JPS5665312A - Data converting circuit - Google Patents
Data converting circuitInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54158135A (en) * | 1977-07-14 | 1979-12-13 | Indep Broadcasting Authority | Digital processor and system |
-
1979
- 1979-10-29 JP JP13966179A patent/JPS5665312A/en active Granted
Patent Citations (1)
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)
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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