GB2292292A - Method and device for transmitting an asynchronous signal to a synchronous system - Google Patents
Method and device for transmitting an asynchronous signal to a synchronous systemInfo
- Publication number
- GB2292292A GB2292292A GB9519626A GB9519626A GB2292292A GB 2292292 A GB2292292 A GB 2292292A GB 9519626 A GB9519626 A GB 9519626A GB 9519626 A GB9519626 A GB 9519626A GB 2292292 A GB2292292 A GB 2292292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- transmitting
- synchronous system
- register
- asynchronous
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/05—Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
- H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Communication Control (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Dc Digital Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a method and a device for transmitting an asynchronous signal (Da) to a synchronous system (SS). In the method, matching of speeds is performed between the inbound signal (Da) and an outbound signal (Ds). In order that the practical implementation would be as simple as possible, the matching of speeds is performed by a register (15) one bit in length such that as a general rule writing into and reading from the register take place alternately while a register overflow or underflow is effected at a signal stop or start bit (B or E) by changing the reading and writing order. The invention also relates to a method and a device for transmitting a signal transmitted to a synchronous system back to an asynchronous device. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI931454A FI93290C (en) | 1993-03-31 | 1993-03-31 | Method and apparatus for transmitting an asynchronous signal to a synchronous system |
PCT/FI1994/000121 WO1994023518A1 (en) | 1993-03-31 | 1994-03-30 | Method and device for transmitting an asynchronous signal to a synchronous system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9519626D0 GB9519626D0 (en) | 1995-11-29 |
GB2292292A true GB2292292A (en) | 1996-02-14 |
GB2292292B GB2292292B (en) | 1996-09-25 |
Family
ID=8537662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9519626A Expired - Fee Related GB2292292B (en) | 1993-03-31 | 1994-03-30 | Method and device for transmitting an asynchronous signal to a synchronous system |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE4491905T1 (en) |
FI (1) | FI93290C (en) |
GB (1) | GB2292292B (en) |
WO (1) | WO1994023518A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2321351A (en) * | 1997-01-17 | 1998-07-22 | Paul Flood | Data transfer across clock domains |
US6151323A (en) * | 1997-01-17 | 2000-11-21 | 3Com Technologies | Method of supporting unknown addresses in an interface for data transmission in an asynchronous transfer mode |
US6163541A (en) * | 1997-01-17 | 2000-12-19 | 3Com Technologies | Method for selecting virtual channels based on address priority in an asynchronous transfer mode device |
US6208662B1 (en) | 1997-01-17 | 2001-03-27 | 3Com Technologies | Method for distributing and recovering buffer memories in an asynchronous transfer mode edge device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048440A (en) * | 1976-11-08 | 1977-09-13 | Bell Telephone Laboratories, Incorporated | Asynchronous-to-synchronous data concentration system |
US4263673A (en) * | 1979-02-08 | 1981-04-21 | Racal-Vadic, Inc. | Receive buffer for converting synchronous-to-asynchronous data |
EP0461703A2 (en) * | 1990-06-09 | 1991-12-18 | Philips Patentverwaltung GmbH | Circuit for bit-rate adaption |
-
1993
- 1993-03-31 FI FI931454A patent/FI93290C/en active
-
1994
- 1994-03-30 DE DE4491905T patent/DE4491905T1/en not_active Withdrawn
- 1994-03-30 WO PCT/FI1994/000121 patent/WO1994023518A1/en active Application Filing
- 1994-03-30 GB GB9519626A patent/GB2292292B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048440A (en) * | 1976-11-08 | 1977-09-13 | Bell Telephone Laboratories, Incorporated | Asynchronous-to-synchronous data concentration system |
US4263673A (en) * | 1979-02-08 | 1981-04-21 | Racal-Vadic, Inc. | Receive buffer for converting synchronous-to-asynchronous data |
EP0461703A2 (en) * | 1990-06-09 | 1991-12-18 | Philips Patentverwaltung GmbH | Circuit for bit-rate adaption |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2321351A (en) * | 1997-01-17 | 1998-07-22 | Paul Flood | Data transfer across clock domains |
GB2321351B (en) * | 1997-01-17 | 1999-03-10 | Paul Flood | System and method for data transfer across multiple clock domains |
US6151323A (en) * | 1997-01-17 | 2000-11-21 | 3Com Technologies | Method of supporting unknown addresses in an interface for data transmission in an asynchronous transfer mode |
US6163541A (en) * | 1997-01-17 | 2000-12-19 | 3Com Technologies | Method for selecting virtual channels based on address priority in an asynchronous transfer mode device |
US6208662B1 (en) | 1997-01-17 | 2001-03-27 | 3Com Technologies | Method for distributing and recovering buffer memories in an asynchronous transfer mode edge device |
Also Published As
Publication number | Publication date |
---|---|
WO1994023518A1 (en) | 1994-10-13 |
FI93290C (en) | 1995-03-10 |
GB9519626D0 (en) | 1995-11-29 |
DE4491905T1 (en) | 1997-07-31 |
AU6378194A (en) | 1994-10-24 |
FI931454A (en) | 1994-10-01 |
FI93290B (en) | 1994-11-30 |
AU676290B2 (en) | 1997-03-06 |
FI931454A0 (en) | 1993-03-31 |
GB2292292B (en) | 1996-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20040330 |
|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20040330 |