JPS57130214A - Digital modulation and demodulation system - Google Patents
Digital modulation and demodulation systemInfo
- Publication number
- JPS57130214A JPS57130214A JP1480981A JP1480981A JPS57130214A JP S57130214 A JPS57130214 A JP S57130214A JP 1480981 A JP1480981 A JP 1480981A JP 1480981 A JP1480981 A JP 1480981A JP S57130214 A JPS57130214 A JP S57130214A
- Authority
- JP
- Japan
- Prior art keywords
- bits
- bit
- information
- synchronizing
- pattern
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Dc Digital Transmission (AREA)
Abstract
PURPOSE:To reduce increases in minimum magnetization inverting interval and in detection window width, by performing synchronization by adding one bit to orginal information data bits. CONSTITUTION:Five digital information words and one 32-bit word consisting of 26 bits for a synchronizing-bit pattern and 6 information bits are regarded as one group and data 1-7 consisting of 192 bits in total succeed one after another. Further, five out of six information bits 7 relate to the digital information words 2-6. A bit 0 is given to 31 bits, synchronizing-bit pattern bits and 5 information bits, to be arranged at 14, and a synchronizing pattern 8 is converted 1 without being inverted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1480981A JPS57130214A (en) | 1981-02-02 | 1981-02-02 | Digital modulation and demodulation system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1480981A JPS57130214A (en) | 1981-02-02 | 1981-02-02 | Digital modulation and demodulation system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57130214A true JPS57130214A (en) | 1982-08-12 |
Family
ID=11871364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1480981A Pending JPS57130214A (en) | 1981-02-02 | 1981-02-02 | Digital modulation and demodulation system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57130214A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0205305A2 (en) * | 1985-06-03 | 1986-12-17 | Canon Kabushiki Kaisha | Data transmission and detection method |
-
1981
- 1981-02-02 JP JP1480981A patent/JPS57130214A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0205305A2 (en) * | 1985-06-03 | 1986-12-17 | Canon Kabushiki Kaisha | Data transmission and detection method |
US4847703A (en) * | 1985-06-03 | 1989-07-11 | Canon Kabushiki Kaisha | Data transmission and detection system |
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