JPS5482216A - Coding and decoding system - Google Patents
Coding and decoding systemInfo
- Publication number
- JPS5482216A JPS5482216A JP14973677A JP14973677A JPS5482216A JP S5482216 A JPS5482216 A JP S5482216A JP 14973677 A JP14973677 A JP 14973677A JP 14973677 A JP14973677 A JP 14973677A JP S5482216 A JPS5482216 A JP S5482216A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- groups
- coding
- bit groups
- complexing
- 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
Abstract
PURPOSE: To reduce the complexing of the apparatus for the purpose of code conversion by coding binary digital data with specific coding logics and decoding these with specific decoding logics.
CONSTITUTION: Binary digital original data strings are segmented at each 2 bits and four kinds of strings of 2 bit groups and 4 kinds of 4 bit position codes are corresponded 1 to 1. The 2 bit groups formed thereby are converted to position codes according to the correspondence relations. For two or more consecutive codes out of these position code groups, the foremost ones are converted to 0, 1, 0, 0 and the subsequent ones to 1, 0, 0, 0. Next, the data strings having been coded are segmented at each 4 bits and if the 4-bit group is 0, 0, 0, 0 preceding to the 4-bit group whose leading bit is 1, it is regarded as 0, 0, 0, 1 and if other than this, it is regarded 0, 0, 0, 0, thus the 4-bit groups are decoded to the corresponding 2-bit groups. Thereby, complexing of the apparatus for code conversion may be reduced.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14973677A JPS5482216A (en) | 1977-12-13 | 1977-12-13 | Coding and decoding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14973677A JPS5482216A (en) | 1977-12-13 | 1977-12-13 | Coding and decoding system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5482216A true JPS5482216A (en) | 1979-06-30 |
Family
ID=15481677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14973677A Pending JPS5482216A (en) | 1977-12-13 | 1977-12-13 | Coding and decoding system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482216A (en) |
-
1977
- 1977-12-13 JP JP14973677A patent/JPS5482216A/en active Pending
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