GB2004164A - Synchronization of data bit streams - Google Patents
Synchronization of data bit streamsInfo
- Publication number
- GB2004164A GB2004164A GB7835665A GB7835665A GB2004164A GB 2004164 A GB2004164 A GB 2004164A GB 7835665 A GB7835665 A GB 7835665A GB 7835665 A GB7835665 A GB 7835665A GB 2004164 A GB2004164 A GB 2004164A
- Authority
- GB
- United Kingdom
- Prior art keywords
- synchronization
- bit
- data bit
- transmission
- bits
- 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.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 abstract 4
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/342—Muting when some special characteristic of the signal is sensed which distinguishes it from noise, e.g. using speech detector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/043—Pseudo-noise [PN] codes variable during transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
An encoder includes a synchronization bit sequencer which generates a synchronization sequence, of length N, selected from a defined listing. The encoder precedes the transmission of data bit sequences with the particular N-Bit synchronization code. A decoder includes a reference register 38 containing the particular N-Bit synchronization sequence, and a resiter 32 for storing the corresponding bits in the received transmission bit sequences. The contents of the two registers are compared at 36. If a match exists between a minimum numbed of synchronization and transmission bits, a signal representative of the state of synchronization is produced. This signal may be used to activate a switch 44 which then couples subsequent transmission bits, i.e. the data bit stream, to the decoder's output. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83095177A | 1977-09-06 | 1977-09-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2004164A true GB2004164A (en) | 1979-03-21 |
Family
ID=25257995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7835665A Withdrawn GB2004164A (en) | 1977-09-06 | 1978-09-05 | Synchronization of data bit streams |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2838228B2 (en) |
GB (1) | GB2004164A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008491A1 (en) * | 1978-08-17 | 1980-03-05 | Motorola, Inc. | Digital demodulator for phase shift keyed signals |
EP0078903A1 (en) * | 1981-11-11 | 1983-05-18 | LGZ LANDIS & GYR ZUG AG | Method and arrangement for assuring the initial synchronization of a telegram within a receiver, the telegram consisting of bit impulse sequences |
US4430742A (en) | 1981-11-20 | 1984-02-07 | Motorola, Inc. | Data muting method and apparatus for radio communications systems |
EP0166274A2 (en) * | 1984-06-04 | 1986-01-02 | Siemens Aktiengesellschaft | Circuit for detecting a defined bit pattern in binary signals appearing serially |
WO1986004754A1 (en) * | 1985-02-01 | 1986-08-14 | General Electric Company | Data muting method and apparatus for audio/digital communications systems |
FR2604793A1 (en) * | 1986-10-07 | 1988-04-08 | Thomson Csf | CONTROL DEVICE COMPRISING A LOAD TRANSFER DEVICE AND METHOD USING THE SAME |
GB2222351A (en) * | 1988-06-14 | 1990-02-28 | British Telecomm | Monitoring apparatus |
WO1992012585A1 (en) * | 1991-01-11 | 1992-07-23 | Sixtel S.P.A. | Enabling code for radiotransmission of data |
WO2021219713A1 (en) * | 2020-04-30 | 2021-11-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for generating or receiving a synchronization header |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59221047A (en) * | 1983-05-30 | 1984-12-12 | Victor Co Of Japan Ltd | Synchronizing signal detecting circuit for digital signal transmission |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE325597B (en) * | 1969-03-26 | 1970-07-06 | Ericsson Telefon Ab L M |
-
1978
- 1978-09-01 DE DE19782838228 patent/DE2838228B2/en not_active Withdrawn
- 1978-09-05 GB GB7835665A patent/GB2004164A/en not_active Withdrawn
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008491A1 (en) * | 1978-08-17 | 1980-03-05 | Motorola, Inc. | Digital demodulator for phase shift keyed signals |
EP0078903A1 (en) * | 1981-11-11 | 1983-05-18 | LGZ LANDIS & GYR ZUG AG | Method and arrangement for assuring the initial synchronization of a telegram within a receiver, the telegram consisting of bit impulse sequences |
US4506372A (en) * | 1981-11-11 | 1985-03-19 | Lgz Landis & Gyr Zug Ag. | Method and apparatus for recognizing in a receiver the start of a telegram signal consisting of a bit impulse sequence |
US4430742A (en) | 1981-11-20 | 1984-02-07 | Motorola, Inc. | Data muting method and apparatus for radio communications systems |
EP0166274A3 (en) * | 1984-06-04 | 1988-09-14 | Siemens Aktiengesellschaft | Circuit for detecting a defined bit pattern in binary signals appearing serially |
EP0166274A2 (en) * | 1984-06-04 | 1986-01-02 | Siemens Aktiengesellschaft | Circuit for detecting a defined bit pattern in binary signals appearing serially |
WO1986004754A1 (en) * | 1985-02-01 | 1986-08-14 | General Electric Company | Data muting method and apparatus for audio/digital communications systems |
FR2604793A1 (en) * | 1986-10-07 | 1988-04-08 | Thomson Csf | CONTROL DEVICE COMPRISING A LOAD TRANSFER DEVICE AND METHOD USING THE SAME |
WO1988002898A1 (en) * | 1986-10-07 | 1988-04-21 | Thomson-Csf | Control device comprising a charge coupling device and method using said device |
GB2222351A (en) * | 1988-06-14 | 1990-02-28 | British Telecomm | Monitoring apparatus |
WO1992012585A1 (en) * | 1991-01-11 | 1992-07-23 | Sixtel S.P.A. | Enabling code for radiotransmission of data |
US5432825A (en) * | 1991-01-11 | 1995-07-11 | Sixtel, S.P.A. Corp. | Enabling code for radiotransmission of data |
WO2021219713A1 (en) * | 2020-04-30 | 2021-11-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for generating or receiving a synchronization header |
WO2021219229A1 (en) * | 2020-04-30 | 2021-11-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for generating or receiving a synchronization header |
Also Published As
Publication number | Publication date |
---|---|
DE2838228A1 (en) | 1979-03-15 |
DE2838228B2 (en) | 1981-03-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |