JPS64857B2 - - Google Patents
Info
- Publication number
- JPS64857B2 JPS64857B2 JP18112782A JP18112782A JPS64857B2 JP S64857 B2 JPS64857 B2 JP S64857B2 JP 18112782 A JP18112782 A JP 18112782A JP 18112782 A JP18112782 A JP 18112782A JP S64857 B2 JPS64857 B2 JP S64857B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- prediction
- time
- predicted
- invariant
- 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.)
- Expired
Links
- 238000013139 quantization Methods 0.000 claims description 95
- 230000003044 adaptive effect Effects 0.000 claims description 60
- 238000000034 method Methods 0.000 claims description 48
- 230000006870 function Effects 0.000 claims description 41
- 230000007423 decrease Effects 0.000 claims description 10
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 20
- 238000012546 transfer Methods 0.000 description 14
- 230000005236 sound signal Effects 0.000 description 10
- 238000005070 sampling Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009499 grossing Methods 0.000 description 5
- 238000003079 width control Methods 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 125000002015 acyclic group Chemical group 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
- H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18112782A JPS5970329A (ja) | 1982-10-15 | 1982-10-15 | 時不変予測組合せ型ａｄｐｃｍ符号化復号化方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18112782A JPS5970329A (ja) | 1982-10-15 | 1982-10-15 | 時不変予測組合せ型ａｄｐｃｍ符号化復号化方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5970329A JPS5970329A (ja) | 1984-04-20 |
| JPS64857B2 true JPS64857B2 (OSRAM) | 1989-01-09 |
Family
ID=16095334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18112782A Granted JPS5970329A (ja) | 1982-10-15 | 1982-10-15 | 時不変予測組合せ型ａｄｐｃｍ符号化復号化方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5970329A (OSRAM) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2507431B2 (ja) * | 1987-06-01 | 1996-06-12 | 株式会社日立製作所 | Ａｄｐｃｍ符号化・復号化方法 |
-
1982
- 1982-10-15 JP JP18112782A patent/JPS5970329A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5970329A (ja) | 1984-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4475227A (en) | Adaptive prediction | |
| EP0099397B1 (en) | Adaptive differential pcm coding | |
| US4831636A (en) | Coding transmission equipment for carrying out coding with adaptive quantization | |
| US5206884A (en) | Transform domain quantization technique for adaptive predictive coding | |
| JPH02194734A (ja) | 符号化出力データ量の制御方式 | |
| US9106241B2 (en) | Prediction of signals | |
| CA1219373A (en) | Adaptive differential pulse code modulation decoding circuit | |
| JPH0411054B2 (OSRAM) | ||
| JPS64857B2 (OSRAM) | ||
| JP3398457B2 (ja) | 量子化スケールファクタ生成方法、逆量子化スケールファクタ生成方法、適応量子化回路、適応逆量子化回路、符号化装置及び復号化装置 | |
| JPH10336649A (ja) | 動画像符号化方法および装置 | |
| JP2975764B2 (ja) | 信号の符号化復号化装置 | |
| JPS635926B2 (OSRAM) | ||
| JPH043695B2 (OSRAM) | ||
| US7098816B2 (en) | Tri-state delta codec method and system | |
| JP2561855B2 (ja) | 符号化装置 | |
| JPH043696B2 (OSRAM) | ||
| JPH0414528B2 (OSRAM) | ||
| JPS62104223A (ja) | Ａｄｐｃｍ符号化・復合化器 | |
| JPH0123971B2 (OSRAM) | ||
| JPS625378B2 (OSRAM) | ||
| JPH0356022B2 (OSRAM) | ||
| JPS63111740A (ja) | 適応予測器 | |
| JPH05102860A (ja) | 符号化装置 | |
| JPS6356727B2 (OSRAM) |