JPS55139618A - Coding method - Google Patents
Coding methodInfo
- Publication number
- JPS55139618A JPS55139618A JP4826079A JP4826079A JPS55139618A JP S55139618 A JPS55139618 A JP S55139618A JP 4826079 A JP4826079 A JP 4826079A JP 4826079 A JP4826079 A JP 4826079A JP S55139618 A JPS55139618 A JP S55139618A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- terminal
- coded
- coder
- past
- 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
Abstract
PURPOSE: To generate a sequence of codes including no DC component by coding and outputting the coding output and opposite value of one past input value 0 of a state transition.
CONSTITUTION: Data 0, when inputted from input terminal 1, is inverted by NOT circuit 4d into 1 to invert by NAND circuit 8 one past signal 0 stored in FF3. At this time, since AND circuit 5d following circuit 8 is closed, inversion signal 1 of one past signal 0 is outputted to output terminal 2 via OR circuit 6c. When 1 is inputted from terminal 1, on the other hand, 1 is coded by MFM coder 9. In this case, circuit 5d following coder 9 is opened and AND circuit 5e follwing circuit 8 is closed, so that 1 coded by coder 9 will be outputted to terminal 2. Then, initial 0 and final 0 of the state transition at this time in small sequence of 0, 1,...1, 0 is coded by inverting by added transition to remove a DC component.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4826079A JPS55139618A (en) | 1979-04-18 | 1979-04-18 | Coding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4826079A JPS55139618A (en) | 1979-04-18 | 1979-04-18 | Coding method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55139618A true JPS55139618A (en) | 1980-10-31 |
JPS6238789B2 JPS6238789B2 (en) | 1987-08-19 |
Family
ID=12798462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4826079A Granted JPS55139618A (en) | 1979-04-18 | 1979-04-18 | Coding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55139618A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008154501A (en) * | 2006-12-22 | 2008-07-10 | Mitsubishi Agricult Mach Co Ltd | Transplanter |
-
1979
- 1979-04-18 JP JP4826079A patent/JPS55139618A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008154501A (en) * | 2006-12-22 | 2008-07-10 | Mitsubishi Agricult Mach Co Ltd | Transplanter |
Also Published As
Publication number | Publication date |
---|---|
JPS6238789B2 (en) | 1987-08-19 |
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