DE69118638D1 - Gewinnung einer exakten Symbolrate wie angewendet bei Bandbreitenkompression von Modemsignalen durch Demodulation und Remodulation - Google Patents
Gewinnung einer exakten Symbolrate wie angewendet bei Bandbreitenkompression von Modemsignalen durch Demodulation und RemodulationInfo
- Publication number
- DE69118638D1 DE69118638D1 DE69118638T DE69118638T DE69118638D1 DE 69118638 D1 DE69118638 D1 DE 69118638D1 DE 69118638 T DE69118638 T DE 69118638T DE 69118638 T DE69118638 T DE 69118638T DE 69118638 D1 DE69118638 D1 DE 69118638D1
- Authority
- DE
- Germany
- Prior art keywords
- remodulation
- demodulation
- obtaining
- symbol rate
- bandwidth compression
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/062—Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
- H04J3/0632—Synchronisation of packets and cells, e.g. transmission of voice via a packet network, circuit emulation service [CES]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
- H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
- H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Facsimile Image Signal Circuits (AREA)
- Communication Control (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/589,297 US5123033A (en) | 1990-09-27 | 1990-09-27 | Extraction of an exact symbol rate as applied to bandwidth compression of modem signals through demodulation and remodulation |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69118638D1 true DE69118638D1 (de) | 1996-05-15 |
DE69118638T2 DE69118638T2 (de) | 1996-11-21 |
Family
ID=24357424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69118638T Expired - Fee Related DE69118638T2 (de) | 1990-09-27 | 1991-09-17 | Gewinnung einer exakten Symbolrate wie angewendet bei Bandbreitenkompression von Modemsignalen durch Demodulation und Remodulation |
Country Status (6)
Country | Link |
---|---|
US (1) | US5123033A (de) |
EP (1) | EP0478207B1 (de) |
JP (1) | JPH077971B2 (de) |
AU (1) | AU627667B2 (de) |
DE (1) | DE69118638T2 (de) |
IL (1) | IL99558A (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5513212A (en) * | 1993-11-15 | 1996-04-30 | At&T Corp. | Conversion of a fax modulation to a data modulation |
US5953647A (en) * | 1995-12-18 | 1999-09-14 | Paradyne Corporation | Technique for sending faxes over cellular communications channels |
US5920402A (en) * | 1995-12-18 | 1999-07-06 | Paradyne Corporation | Use of compression to improve the sending of faxes over analog cellular |
US5752199A (en) * | 1995-12-18 | 1998-05-12 | Paradyne Corporation | Method and apparatus for sending faxes over analog cellular |
US5920825A (en) * | 1995-12-18 | 1999-07-06 | Paradyne Corporation | Method and apparatus for bypassing a cellular modem pool during a fax transmission |
US6741659B1 (en) | 1999-10-25 | 2004-05-25 | Freesystems Pte. Ltd. | Wireless infrared digital audio transmitting system |
US6614849B1 (en) * | 1999-10-25 | 2003-09-02 | Free Systems Pte. Ltd. | Wireless infrared digital audio receiving system |
US6510182B1 (en) * | 1999-10-25 | 2003-01-21 | Freesystems Pte. Ltd. | Wireless infrared digital audio system |
US7130337B2 (en) | 2001-07-02 | 2006-10-31 | Phonex Broadband Corporation | Method and system for sample and recreation synchronization for digital transmission of analog modem signal |
JP2006012301A (ja) * | 2004-06-25 | 2006-01-12 | Sony Corp | 光記録再生方法、光ピックアップ装置、光記録再生装置、光記録媒体とその製造方法及び半導体レーザ装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534264A (en) * | 1966-04-15 | 1970-10-13 | Ibm | Adaptive digital communication system |
US3594651A (en) * | 1969-10-15 | 1971-07-20 | Communications Satellite Corp | Quadriphase modem |
NL7408243A (nl) * | 1974-06-20 | 1975-12-23 | Philips Nv | Transmissiesysteem voor pulssignalen van vaste klokfrequentie. |
US4455663A (en) * | 1981-11-19 | 1984-06-19 | Novation, Inc. | Full duplex modems and synchronizing methods and apparatus therefor |
FR2525055A1 (fr) * | 1982-04-09 | 1983-10-14 | Trt Telecom Radio Electr | Procede de correction de frequence de la porteuse locale dans le recepteur d'un systeme de transmission de donnees et recepteur utilisant ce procede |
GB8429921D0 (en) * | 1984-11-27 | 1985-01-03 | British Telecomm | Flexible regenerator |
NL8600889A (nl) * | 1986-04-09 | 1987-11-02 | Philips Nv | Inrichting voor het terugwinnen van kanaalklokinformatie bij synchrone informatietransmissie en een inrichting voor het terugwinnen van de informatie voorzien van een dergelijke inrichting. |
US4821286A (en) * | 1986-05-27 | 1989-04-11 | American Telephone And Telegraph Company | Quaternary signal regenerator |
US4815137A (en) * | 1986-11-06 | 1989-03-21 | American Telephone And Telegraph Company | Voiceband signal classification |
US4887280A (en) * | 1986-12-29 | 1989-12-12 | Hughes Aircraft Company | System for detecting the presence of a signal of a particular data rate |
CA1288878C (en) * | 1988-08-15 | 1991-09-10 | John D. Mcnicol | Timing and carrier recovery in tdma without preamable sequence |
-
1990
- 1990-09-27 US US07/589,297 patent/US5123033A/en not_active Expired - Lifetime
-
1991
- 1991-09-06 AU AU83724/91A patent/AU627667B2/en not_active Ceased
- 1991-09-17 DE DE69118638T patent/DE69118638T2/de not_active Expired - Fee Related
- 1991-09-17 EP EP91308475A patent/EP0478207B1/de not_active Expired - Lifetime
- 1991-09-20 JP JP3268604A patent/JPH077971B2/ja not_active Expired - Fee Related
- 1991-09-25 IL IL9955891A patent/IL99558A/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0478207A3 (en) | 1992-10-07 |
AU627667B2 (en) | 1992-08-27 |
EP0478207B1 (de) | 1996-04-10 |
JPH077971B2 (ja) | 1995-01-30 |
IL99558A0 (en) | 1992-08-18 |
US5123033A (en) | 1992-06-16 |
AU8372491A (en) | 1992-04-02 |
JPH04259154A (ja) | 1992-09-14 |
IL99558A (en) | 1994-10-07 |
EP0478207A2 (de) | 1992-04-01 |
DE69118638T2 (de) | 1996-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |