JPS57147325A - Forecasting and encoding system - Google Patents
Forecasting and encoding systemInfo
- Publication number
- JPS57147325A JPS57147325A JP3289081A JP3289081A JPS57147325A JP S57147325 A JPS57147325 A JP S57147325A JP 3289081 A JP3289081 A JP 3289081A JP 3289081 A JP3289081 A JP 3289081A JP S57147325 A JPS57147325 A JP S57147325A
- Authority
- JP
- Japan
- Prior art keywords
- level
- forecasted
- signal
- forecasting
- order
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
PURPOSE:To shorten an average code by forecasting the 1st forecastes level from a signal level at a reference point and then forecasting forecasted levels up to the (m)th one according to a less level difference from the 1st forecasted level, and detecting and encoding information on where a signal level at an aimed point stands in forecasting order. CONSTITUTION:An input picture signal S0 is stored in a memory 1. From a signal level at a reference point outputted out of the memory 1, a forecasting device 2 generates the 1st forecasted level a1. From the 1st forecasted level a1, the 2nd-(m)th forecasted levels are generated according to a less level difference, and an order converter 3 detects where an input picture signal S0 stands in the order of the forecasted levels. The detected order signal a2 is encoded by an encoder 4 into code length which corresponds to the probability of appearance to transmit an encoded signal a3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3289081A JPS57147325A (en) | 1981-03-06 | 1981-03-06 | Forecasting and encoding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3289081A JPS57147325A (en) | 1981-03-06 | 1981-03-06 | Forecasting and encoding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57147325A true JPS57147325A (en) | 1982-09-11 |
| JPS6214134B2 JPS6214134B2 (en) | 1987-03-31 |
Family
ID=12371471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3289081A Granted JPS57147325A (en) | 1981-03-06 | 1981-03-06 | Forecasting and encoding system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57147325A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188793B1 (en) | 1996-03-19 | 2001-02-13 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method and decoding method |
| US6636641B1 (en) | 1996-03-19 | 2003-10-21 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method and decoding method |
| US6744925B2 (en) | 1996-03-19 | 2004-06-01 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method, and decoding method |
-
1981
- 1981-03-06 JP JP3289081A patent/JPS57147325A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6188793B1 (en) | 1996-03-19 | 2001-02-13 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method and decoding method |
| US6636641B1 (en) | 1996-03-19 | 2003-10-21 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method and decoding method |
| US6744925B2 (en) | 1996-03-19 | 2004-06-01 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method, and decoding method |
| US6754393B2 (en) | 1996-03-19 | 2004-06-22 | Mitsubishi Denki Kabushiki Kaisha | Encoding apparatus, decoding apparatus, encoding method, and decoding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6214134B2 (en) | 1987-03-31 |
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