GB1103515A - Improvements in synchronising devices - Google Patents
Improvements in synchronising devicesInfo
- Publication number
- GB1103515A GB1103515A GB47130/65A GB4713065A GB1103515A GB 1103515 A GB1103515 A GB 1103515A GB 47130/65 A GB47130/65 A GB 47130/65A GB 4713065 A GB4713065 A GB 4713065A GB 1103515 A GB1103515 A GB 1103515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- clock
- sync
- pulse
- period
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G7/00—Synchronisation
Abstract
1,103,515. Automatic frequency control systems. COMPAGME FBANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 5 Nov., 1965 [12 Nov., 1964], No. 47130/65. Heading H3A. In a circuit for synchronizing a local clock with received sync. pulses in a digital transmission system, the sync. pulses are passed to first and second circuits, each fed by pulses derived from the clock pulses. In the first circuit it is determined whether there is one sync. pulse only in the period t between two clock pulses and for each of these a pulse passes to a logic arrangement. If there is more than a certain number of adjacent periods t when one pulse is present another pulse is passed to the logic arrangement. The second circuit is similar in operation to the first except that the period of inspection is t/4, centred on the mid-point of period t. From the signals passed to the logical arrangement are generated pulses whose width is dependent on the difference in phase of the clock and sync. pulses, and which are used to develop a voltage for the control of the phase of the clock generator. Details of the various circuits are given in the Specification.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR994637A FR1426996A (en) | 1964-11-12 | 1964-11-12 | Improvements to synchronization devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1103515A true GB1103515A (en) | 1968-02-14 |
Family
ID=8842293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47130/65A Expired GB1103515A (en) | 1964-11-12 | 1965-11-05 | Improvements in synchronising devices |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT274123B (en) |
| BE (1) | BE671724A (en) |
| DE (1) | DE1437631B2 (en) |
| ES (1) | ES319260A1 (en) |
| FR (1) | FR1426996A (en) |
| GB (1) | GB1103515A (en) |
| NL (1) | NL6514644A (en) |
| NO (1) | NO117427B (en) |
| OA (1) | OA01849A (en) |
| SE (1) | SE314699B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2429525A1 (en) * | 1978-06-20 | 1980-01-18 | Thomson Csf | DIGITAL TRANSMISSION SYNCHRONIZATION DEVICE AND TRANSMISSION SYSTEM COMPRISING SUCH A DEVICE |
-
1964
- 1964-11-12 FR FR994637A patent/FR1426996A/en not_active Expired
-
1965
- 1965-10-30 OA OA52234A patent/OA01849A/en unknown
- 1965-11-03 BE BE671724A patent/BE671724A/xx unknown
- 1965-11-05 GB GB47130/65A patent/GB1103515A/en not_active Expired
- 1965-11-05 ES ES0319260A patent/ES319260A1/en not_active Expired
- 1965-11-08 NO NO160386A patent/NO117427B/no unknown
- 1965-11-09 SE SE14462/65A patent/SE314699B/xx unknown
- 1965-11-09 DE DE19651437631 patent/DE1437631B2/en active Pending
- 1965-11-11 AT AT1015865A patent/AT274123B/en active
- 1965-11-11 NL NL6514644A patent/NL6514644A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| OA01849A (en) | 1970-01-14 |
| ES319260A1 (en) | 1966-04-16 |
| NO117427B (en) | 1969-08-11 |
| BE671724A (en) | 1966-05-03 |
| DE1437631B2 (en) | 1971-11-18 |
| AT274123B (en) | 1969-09-10 |
| SE314699B (en) | 1969-09-15 |
| FR1426996A (en) | 1966-02-04 |
| NL6514644A (en) | 1966-05-13 |
| DE1437631A1 (en) | 1969-01-30 |
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