JPS54120569A - Coder - Google Patents
CoderInfo
- Publication number
- JPS54120569A JPS54120569A JP2721778A JP2721778A JPS54120569A JP S54120569 A JPS54120569 A JP S54120569A JP 2721778 A JP2721778 A JP 2721778A JP 2721778 A JP2721778 A JP 2721778A JP S54120569 A JPS54120569 A JP S54120569A
- Authority
- JP
- Japan
- Prior art keywords
- coded
- signal
- coders
- outputs
- bit
- 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
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- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To make it possible to reduce the deterioration of infromation-signal quality with information density for one time slot increased by making the level number of a coded signal at a side, equivalent to higher bits containing much information, smaller than that of lower bits.
CONSTITUTION: To attain the binary multilevel coding of an analog input signal, the higher-bit side is coded at a binary level, for example, and the lower bit side is at a quad level. Coders 1 to 4, which are cascaded, output difference components between analog signal equivalent to coded digital signal and input analog signals to next-stage coders, and signals coded 1 to 4 are supplied to signal composition circuit 5, which arrays outputs of coding processes 1 to 4 according to the connection order of circuits and outputs them as one-word digital coded signals. Consequently, one-bit coders 1 and 2 generate coded outputs (binary) at the higher bit side of the analog input signal, and two-bit coders 3 and 4 generate coded outputs (quad) at the lower bit side.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2721778A JPS54120569A (en) | 1978-03-10 | 1978-03-10 | Coder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2721778A JPS54120569A (en) | 1978-03-10 | 1978-03-10 | Coder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54120569A true JPS54120569A (en) | 1979-09-19 |
Family
ID=12214923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2721778A Pending JPS54120569A (en) | 1978-03-10 | 1978-03-10 | Coder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54120569A (en) |
-
1978
- 1978-03-10 JP JP2721778A patent/JPS54120569A/en active Pending
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