GB2012144A - Arrangement for restituting selection signals - Google Patents
Arrangement for restituting selection signalsInfo
- Publication number
- GB2012144A GB2012144A GB79332A GB7900332A GB2012144A GB 2012144 A GB2012144 A GB 2012144A GB 79332 A GB79332 A GB 79332A GB 7900332 A GB7900332 A GB 7900332A GB 2012144 A GB2012144 A GB 2012144A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- binary
- signal
- signal elements
- reconstituted
- 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
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/24—Relay circuits using discharge tubes or semiconductor devices
- H04L25/242—Relay circuits using discharge tubes or semiconductor devices with retiming
- H04L25/245—Relay circuits using discharge tubes or semiconductor devices with retiming for start-stop signals
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Dc Digital Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
An arrangement for restoring dial pulses which are received as binary signal elements in a binary signal. The mark/space ratio of the dial pulses and the allowable tolerance of this ratio is catered for by allowing a pulse "mark" to be comprised by 2, 3 or 4 binary signal elements A which are binary bits of one value, and allowing a pulse "space" to be comprised by 1, 2 or 3 binary signal elements Z which are binary bits of opposite value. The pulse "spaces" are reconstituted as a fixed duration (or 41 ms in the embodiment described), whereas the pulse "marks" are reconstituted with a variable duration (between 50-70 ms in the embodiment described). The arrangement functions using logic sequences which detect the signal transitions Z-A and A-Z in conjunction with signal element combinations ZZA or AZA which occur in sequentially received and stored signal elements. In Figure 1 a counter 23 counts out the reconstituted mark/space durations under the control of auxiliary counters 18, 33 and 34 which are controlled by A-Z and Z-A transition detectors 15 and 16 which receive signal element information from a store 4 in which successively received signal elements are stored. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7800229A NL7800229A (en) | 1978-01-09 | 1978-01-09 | DEVICE FOR REFUNDS OF CONTROL SIGNALS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2012144A true GB2012144A (en) | 1979-07-18 |
| GB2012144B GB2012144B (en) | 1982-02-17 |
Family
ID=19830109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB79332A Expired GB2012144B (en) | 1978-01-09 | 1979-01-05 | Arrangement for restituting selection signals |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5826226B2 (en) |
| BE (1) | BE873339A (en) |
| CH (1) | CH641614A5 (en) |
| DE (1) | DE2900509C3 (en) |
| ES (1) | ES476600A1 (en) |
| FR (1) | FR2414270A1 (en) |
| GB (1) | GB2012144B (en) |
| IT (1) | IT1112001B (en) |
| NL (1) | NL7800229A (en) |
| SE (1) | SE428078B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61154023U (en) * | 1985-03-13 | 1986-09-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7612357A (en) * | 1976-11-08 | 1978-05-10 | Philips Nv | DEVICE FOR GENERATING START-STOP SIGNALS. |
-
1978
- 1978-01-09 NL NL7800229A patent/NL7800229A/en not_active Application Discontinuation
-
1979
- 1979-01-05 ES ES476600A patent/ES476600A1/en not_active Expired
- 1979-01-05 SE SE7900111A patent/SE428078B/en not_active IP Right Cessation
- 1979-01-05 IT IT19106/79A patent/IT1112001B/en active
- 1979-01-05 CH CH9179A patent/CH641614A5/en not_active IP Right Cessation
- 1979-01-05 GB GB79332A patent/GB2012144B/en not_active Expired
- 1979-01-06 JP JP54000552A patent/JPS5826226B2/en not_active Expired
- 1979-01-08 BE BE0/192788A patent/BE873339A/en not_active IP Right Cessation
- 1979-01-08 DE DE2900509A patent/DE2900509C3/en not_active Expired
- 1979-01-08 FR FR7900323A patent/FR2414270A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| NL7800229A (en) | 1979-07-11 |
| FR2414270A1 (en) | 1979-08-03 |
| ES476600A1 (en) | 1979-05-16 |
| BE873339A (en) | 1979-07-09 |
| SE7900111L (en) | 1979-07-10 |
| DE2900509C3 (en) | 1982-02-04 |
| IT7919106A0 (en) | 1979-01-05 |
| IT1112001B (en) | 1986-01-13 |
| GB2012144B (en) | 1982-02-17 |
| CH641614A5 (en) | 1984-02-29 |
| DE2900509A1 (en) | 1979-07-12 |
| JPS5498103A (en) | 1979-08-02 |
| SE428078B (en) | 1983-05-30 |
| DE2900509B2 (en) | 1981-05-07 |
| JPS5826226B2 (en) | 1983-06-01 |
| FR2414270B1 (en) | 1984-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |