JPS6410743A - Digital signal transmission system - Google Patents
Digital signal transmission systemInfo
- Publication number
- JPS6410743A JPS6410743A JP16619187A JP16619187A JPS6410743A JP S6410743 A JPS6410743 A JP S6410743A JP 16619187 A JP16619187 A JP 16619187A JP 16619187 A JP16619187 A JP 16619187A JP S6410743 A JPS6410743 A JP S6410743A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sampling frequency
- predictive
- sampling
- circuit
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
PURPOSE:To improve prediction precision 4 by increasing the sampling points of an input signal, and obtaining the predictive sampled signal of higher precision. CONSTITUTION:A system is provided with an adaptation circuit 5, constituted of a sampling frequency conversion circuit 21, which increases the sampling frequency of the output signal of an adaptive quantizer 4, and obtains the more sampling signals, a signal prediction circuit 22, which differentiates the output signal of the sampling frequency conversion circuit 21, and generates a predictive signal, and at the same time, varies the analog conversion level of the predictive signal according to a control signal Sn, and a control signal generating means 23, which compares the sizes of a reference signal, previously set within a prescribed level range, and the analog converted level of the predictive signal, and generates the control signal according to the comparison result. The sampling frequency conversion circuit 21 to constitute the adaptation circuit 5 makes the sampling frequency fs of the input signal into for instance four times, i.e., 4fs, and the number of the sampling points is increased. Thus, an error for the original sampled signal comes less, and the prediction precision is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16619187A JPS6410743A (en) | 1987-07-02 | 1987-07-02 | Digital signal transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16619187A JPS6410743A (en) | 1987-07-02 | 1987-07-02 | Digital signal transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6410743A true JPS6410743A (en) | 1989-01-13 |
Family
ID=15826776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16619187A Pending JPS6410743A (en) | 1987-07-02 | 1987-07-02 | Digital signal transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6410743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06177842A (en) * | 1992-01-08 | 1994-06-24 | Internatl Business Mach Corp <Ibm> | Signal processor, analog-signal conversion method and sampling-rate conversion method |
-
1987
- 1987-07-02 JP JP16619187A patent/JPS6410743A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06177842A (en) * | 1992-01-08 | 1994-06-24 | Internatl Business Mach Corp <Ibm> | Signal processor, analog-signal conversion method and sampling-rate conversion method |
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