DE2321289A1 - Modem mit einem dynamischen speicher zur erzeugung eines modulierten traegersignals - Google Patents
Modem mit einem dynamischen speicher zur erzeugung eines modulierten traegersignalsInfo
- Publication number
- DE2321289A1 DE2321289A1 DE19732321289 DE2321289A DE2321289A1 DE 2321289 A1 DE2321289 A1 DE 2321289A1 DE 19732321289 DE19732321289 DE 19732321289 DE 2321289 A DE2321289 A DE 2321289A DE 2321289 A1 DE2321289 A1 DE 2321289A1
- Authority
- DE
- Germany
- Prior art keywords
- memory
- signal
- binary
- constants
- data
- 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
- 230000015654 memory Effects 0.000 title claims description 73
- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000001228 spectrum Methods 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 11
- 230000006870 function Effects 0.000 claims description 7
- 230000010363 phase shift Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 2
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000005070 sampling Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002123 temporal effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 150000001875 compounds Chemical group 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- BBXXLROWFHWFQY-UHFFFAOYSA-N ethirimol Chemical compound CCCCC1=C(C)NC(NCC)=NC1=O BBXXLROWFHWFQY-UHFFFAOYSA-N 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000012905 input function Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 101100165798 Arabidopsis thaliana CYP86A1 gene Proteins 0.000 description 1
- 240000001973 Ficus microcarpa Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Dc Digital Transmission (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25066772A | 1972-05-05 | 1972-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2321289A1 true DE2321289A1 (de) | 1973-12-13 |
Family
ID=22948680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732321289 Pending DE2321289A1 (de) | 1972-05-05 | 1973-04-27 | Modem mit einem dynamischen speicher zur erzeugung eines modulierten traegersignals |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4956515A (enExample) |
| CA (1) | CA1008180A (enExample) |
| DE (1) | DE2321289A1 (enExample) |
| FR (1) | FR2191362B3 (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5513504A (en) * | 1978-07-03 | 1980-01-30 | Hitachi Denshi Ltd | Phase modulation system |
| JPH04215467A (ja) * | 1990-12-14 | 1992-08-06 | Alps Electric Co Ltd | 半導体集積回路 |
-
1973
- 1973-04-27 DE DE19732321289 patent/DE2321289A1/de active Pending
- 1973-05-02 CA CA170,769A patent/CA1008180A/en not_active Expired
- 1973-05-04 FR FR7316090A patent/FR2191362B3/fr not_active Expired
- 1973-05-07 JP JP5056073A patent/JPS4956515A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA1008180A (en) | 1977-04-05 |
| FR2191362B3 (enExample) | 1976-04-23 |
| FR2191362A1 (enExample) | 1974-02-01 |
| JPS4956515A (enExample) | 1974-06-01 |
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