GB1177187A - Improvements in or relating to Electric Pulse Train Analysing Systems - Google Patents
Improvements in or relating to Electric Pulse Train Analysing SystemsInfo
- Publication number
- GB1177187A GB1177187A GB1981468A GB1981468A GB1177187A GB 1177187 A GB1177187 A GB 1177187A GB 1981468 A GB1981468 A GB 1981468A GB 1981468 A GB1981468 A GB 1981468A GB 1177187 A GB1177187 A GB 1177187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- time
- received
- store
- occurrence
- pulse
- 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
- H04L12/00—Data switching networks
- H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication
- H04L12/52—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1,177,187. Digital transmission systems; automatic exchange equipment. SIEMENS A.G. 26 April, 1968 [28 April, 1967]; No. 19814/68. Headings H4K and H4P. In a digital transmission system the time of occurrence of a received pulse is recorded and when a subsequently received pulse is received the time difference between the pulses is determined. In one embodiment the time of occurrence of the Start bit of a telegraph signal is recorded in a store. The stored time is subtracted from the time of occurrence of each subsequent change in level in the signal, and from the result is subtracted a time equal to a multiple of the theoretical signal element duration. The resultant signal represents the amount that the change in level differs from its theoretical position, and if this amount is less than half an element in duration, a counter records the number of elements received and a store stores the received elements. In a second embodiment the time of occurrence of a received dialling pulse is stored in a first store, and the time of the next pulse in a second store. If the time difference is within the correct limits the second store is read out to the first, for subtraction from the time of the next pulse, and a counter is incremented.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1967S0109622 DE1294421B (en) | 1967-04-28 | 1967-04-28 | Method for recognizing pulse trains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1177187A true GB1177187A (en) | 1970-01-07 |
Family
ID=7529663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1981468A Expired GB1177187A (en) | 1967-04-28 | 1968-04-26 | Improvements in or relating to Electric Pulse Train Analysing Systems |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE714293A (en) |
| CH (1) | CH478489A (en) |
| DE (1) | DE1294421B (en) |
| FR (1) | FR1570071A (en) |
| GB (1) | GB1177187A (en) |
| NL (1) | NL6805989A (en) |
| SE (1) | SE333161B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614910B (en) * | 2022-03-09 | 2024-05-28 | 江苏斯菲尔电气股份有限公司 | Pulse signal low-power-consumption wireless transmission system and method |
-
1967
- 1967-04-28 DE DE1967S0109622 patent/DE1294421B/en active Pending
-
1968
- 1968-04-03 CH CH492468A patent/CH478489A/en not_active IP Right Cessation
- 1968-04-26 SE SE567868A patent/SE333161B/en unknown
- 1968-04-26 BE BE714293D patent/BE714293A/xx unknown
- 1968-04-26 GB GB1981468A patent/GB1177187A/en not_active Expired
- 1968-04-26 NL NL6805989A patent/NL6805989A/xx unknown
- 1968-04-29 FR FR1570071D patent/FR1570071A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH478489A (en) | 1969-09-15 |
| BE714293A (en) | 1968-10-28 |
| NL6805989A (en) | 1968-10-29 |
| DE1294421B (en) | 1969-05-08 |
| SE333161B (en) | 1971-03-08 |
| FR1570071A (en) | 1969-06-06 |
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