JPS5845222B2 - フクシンカデ−タ モデム - Google Patents
フクシンカデ−タ モデムInfo
- Publication number
- JPS5845222B2 JPS5845222B2 JP49052181A JP5218174A JPS5845222B2 JP S5845222 B2 JPS5845222 B2 JP S5845222B2 JP 49052181 A JP49052181 A JP 49052181A JP 5218174 A JP5218174 A JP 5218174A JP S5845222 B2 JPS5845222 B2 JP S5845222B2
- Authority
- JP
- Japan
- Prior art keywords
- data
- bits
- phase
- phase angle
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000007792 addition Methods 0.000 description 18
- 230000010363 phase shift Effects 0.000 description 13
- 230000000875 corresponding effect Effects 0.000 description 12
- 238000012546 transfer Methods 0.000 description 10
- 238000003860 storage Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000007704 transition Effects 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
- H04L27/2053—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 more than one carrier, e.g. carriers with different phases
- H04L27/2057—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 more than one carrier, e.g. carriers with different phases with a separate carrier for each phase state
-
- 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
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/359,186 US3943285A (en) | 1973-05-10 | 1973-05-10 | Multiplexed data modem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51126005A JPS51126005A (en) | 1976-11-02 |
| JPS5845222B2 true JPS5845222B2 (ja) | 1983-10-07 |
Family
ID=23412694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49052181A Expired JPS5845222B2 (ja) | 1973-05-10 | 1974-05-10 | フクシンカデ−タ モデム |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3943285A (enExample) |
| JP (1) | JPS5845222B2 (enExample) |
| CA (1) | CA1026474A (enExample) |
| CH (1) | CH588193A5 (enExample) |
| DE (1) | DE2422134C3 (enExample) |
| FR (1) | FR2229170B1 (enExample) |
| GB (1) | GB1476251A (enExample) |
| SE (1) | SE395584B (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0249915U (enExample) * | 1988-10-03 | 1990-04-06 |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1519972A (en) * | 1974-07-19 | 1978-08-02 | Nippon Telegraph & Telephone | Data transmission system |
| US4217467A (en) * | 1974-07-19 | 1980-08-12 | Nippon Telegraph & Telephone Public Corporation | Amplitude and periodic phase modulation transmission system |
| US4169246A (en) * | 1976-12-06 | 1979-09-25 | Motorola, Inc. | Digital carrier correction circuit |
| US4382297A (en) * | 1980-10-24 | 1983-05-03 | Bell Telephone Laboratories, Incorporated | Demultiplex receiver apparatus |
| US4381560A (en) * | 1980-10-24 | 1983-04-26 | Bell Telephone Laboratories, Incorporated | Multiplex transmitter apparatus |
| US4509171A (en) * | 1982-12-08 | 1985-04-02 | Paradyne Corporation | Modem multiplexer synchronization by radial modulation |
| US4987586A (en) * | 1987-07-31 | 1991-01-22 | Compaq Computer Corporation | Modem-telephone interconnect |
| US4891806A (en) * | 1987-09-18 | 1990-01-02 | Racal Data Communications Inc. | Constellation multiplexed inband secondary channel for voiceband modem |
| EP0434355A3 (en) * | 1989-12-18 | 1993-02-24 | Nec Corporation | Differential phase demodulator for psk-modulated signals |
| EP0467712B1 (en) * | 1990-07-20 | 1998-04-29 | Nec Corporation | Phase demodulator for psk-modulated signals |
| RU2138121C1 (ru) * | 1998-12-11 | 1999-09-20 | Московский технический университет связи и информатики | Способ балансного пространственно-комбинационного уплотнения при передаче цифровых сигналов по многопроводным линиям связи и устройство для его осуществления |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149283A (en) * | 1960-02-23 | 1964-09-15 | Ericsson Telefon Ab L M | Data transmission system utilizing a start signal |
| DE1222974B (de) * | 1965-02-04 | 1966-08-18 | Siemens Ag | Verfahren und Schaltungsanordnung zur UEbertragung binaerer Signale in hoeher codierter Form |
| US3619503A (en) * | 1969-11-18 | 1971-11-09 | Int Communications Corp | Phase and amplitude modulated modem |
| JPS5038488B1 (enExample) * | 1970-08-14 | 1975-12-10 | ||
| US3758870A (en) * | 1972-02-23 | 1973-09-11 | Sanders Associates Inc | Digital demodulator |
-
1973
- 1973-05-10 US US05/359,186 patent/US3943285A/en not_active Expired - Lifetime
-
1974
- 1974-05-03 CA CA198,896A patent/CA1026474A/en not_active Expired
- 1974-05-08 DE DE2422134A patent/DE2422134C3/de not_active Expired
- 1974-05-09 CH CH633574A patent/CH588193A5/xx not_active IP Right Cessation
- 1974-05-09 GB GB2047674A patent/GB1476251A/en not_active Expired
- 1974-05-09 FR FR7416120A patent/FR2229170B1/fr not_active Expired
- 1974-05-09 SE SE7406236A patent/SE395584B/xx not_active IP Right Cessation
- 1974-05-10 JP JP49052181A patent/JPS5845222B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0249915U (enExample) * | 1988-10-03 | 1990-04-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2229170B1 (enExample) | 1977-10-28 |
| JPS51126005A (en) | 1976-11-02 |
| DE2422134B2 (de) | 1978-11-30 |
| CH588193A5 (enExample) | 1977-05-31 |
| US3943285A (en) | 1976-03-09 |
| DE2422134C3 (de) | 1979-08-02 |
| FR2229170A1 (enExample) | 1974-12-06 |
| GB1476251A (en) | 1977-06-10 |
| DE2422134A1 (de) | 1974-11-28 |
| CA1026474A (en) | 1978-02-14 |
| SE395584B (sv) | 1977-08-15 |
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