DE2454375A1 - System zur weitergabe von codierten digitalen daten in analogform - Google Patents
System zur weitergabe von codierten digitalen daten in analogformInfo
- Publication number
- DE2454375A1 DE2454375A1 DE19742454375 DE2454375A DE2454375A1 DE 2454375 A1 DE2454375 A1 DE 2454375A1 DE 19742454375 DE19742454375 DE 19742454375 DE 2454375 A DE2454375 A DE 2454375A DE 2454375 A1 DE2454375 A1 DE 2454375A1
- Authority
- DE
- Germany
- Prior art keywords
- components
- analog
- bits
- vector
- transformation
- 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
- 238000009826 distribution Methods 0.000 title description 8
- 239000013598 vector Substances 0.000 claims description 77
- 230000009466 transformation Effects 0.000 claims description 47
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000000844 transformation Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000001131 transforming effect Effects 0.000 claims 1
- 230000015654 memory Effects 0.000 description 31
- 238000003860 storage Methods 0.000 description 16
- 238000004364 calculation method Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L23/00—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
- H04L23/02—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 adapted for orthogonal signalling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7340880A FR2251960B1 (enExample) | 1973-11-16 | 1973-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2454375A1 true DE2454375A1 (de) | 1975-05-22 |
Family
ID=9127871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19742454375 Pending DE2454375A1 (de) | 1973-11-16 | 1974-11-15 | System zur weitergabe von codierten digitalen daten in analogform |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4001564A (enExample) |
| DE (1) | DE2454375A1 (enExample) |
| FR (1) | FR2251960B1 (enExample) |
| GB (1) | GB1480367A (enExample) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5267201A (en) * | 1975-12-01 | 1977-06-03 | Matsushita Electric Ind Co Ltd | Station selecting unit |
| JPS5279747A (en) * | 1975-12-26 | 1977-07-05 | Sony Corp | Noise removal circuit |
| US4121295A (en) * | 1977-04-07 | 1978-10-17 | Wittronics, Inc. | Integer weighted impulse equivalent coded signal processing apparatus |
| US4227250A (en) * | 1978-11-09 | 1980-10-07 | Bell Telephone Laboratories, Incorporated | Minimization of excess bandwidth in pulse amplitude modulated data transmission |
| US4210931A (en) * | 1978-12-28 | 1980-07-01 | Discovision Associates | Video player and/or recorder with Hadamard transform |
| IT1119700B (it) * | 1979-12-13 | 1986-03-10 | Cselt Centro Studi Lab Telecom | Perfezionamenti ai sistemi di comunicazione a spettro diffuso |
| IT1119972B (it) * | 1979-12-13 | 1986-03-19 | Cselt Centro Studi Lab Telecom | Procedimento e dispositivo per la trasmissione di segnali analogici in un sistema di comunicazione a spettro diffuso |
| US4516220A (en) * | 1982-08-02 | 1985-05-07 | Motorola, Inc. | Pulse deinterleaving signal processor and method |
| US4805030A (en) * | 1986-01-27 | 1989-02-14 | Fuji Photo Film Co., Ltd. | Method of image signal encoding by orthogonal transformation |
| EP0231021B1 (en) * | 1986-01-27 | 1994-12-14 | Fuji Photo Film Co., Ltd. | Image signal encoding method by orthogonal transformation |
| NL8700175A (nl) * | 1987-01-26 | 1988-08-16 | Philips Nv | Werkwijze voor het door middel van codesignalen overdragen van informatie, informatie-overdrachtsysteem voor het uitvoeren van de werkwijze, alsmede een verzend- en ontvangstinrichting voor toepassing in het overdrachtsysteem. |
| US6278702B1 (en) * | 1998-12-02 | 2001-08-21 | Nortel Networks Limited | Method for limiting the dynamic range of a CDMA signal |
| FR2787232B1 (fr) | 1998-12-15 | 2001-02-23 | Thomson Csf | Disque d'enregistrement optique anti-piratage et procede de lecture d'un tel disque |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3337858A (en) * | 1963-11-04 | 1967-08-22 | Massachusetts Inst Technology | Storage and retrieval of orthogonally related signals |
| US3398239A (en) * | 1964-05-21 | 1968-08-20 | Itt | Multilevel coded communication system employing frequency-expanding code conversion |
| AU415174B1 (en) * | 1967-08-04 | 1971-07-15 | THE COMMONWEALTH OF AUSTRALIA Actual Inventor PJ) PAULO'NEILL GILLARD | High density and for high frequency digital recording |
| US3792355A (en) * | 1970-12-11 | 1974-02-12 | Hitachi Ltd | Orthogonal transformation circuit using hadamard matrices |
-
1973
- 1973-11-16 FR FR7340880A patent/FR2251960B1/fr not_active Expired
-
1974
- 1974-11-14 GB GB49368/74A patent/GB1480367A/en not_active Expired
- 1974-11-15 DE DE19742454375 patent/DE2454375A1/de active Pending
- 1974-11-15 US US05/524,270 patent/US4001564A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2251960A1 (enExample) | 1975-06-13 |
| US4001564A (en) | 1977-01-04 |
| GB1480367A (en) | 1977-07-20 |
| FR2251960B1 (enExample) | 1977-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHN | Withdrawal |