GB1231933A - - Google Patents
Info
- Publication number
- GB1231933A GB1231933A GB1231933DA GB1231933A GB 1231933 A GB1231933 A GB 1231933A GB 1231933D A GB1231933D A GB 1231933DA GB 1231933 A GB1231933 A GB 1231933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- transmitter
- attendant
- transmission
- connect
- 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
- 230000005540 biological transmission Effects 0.000 abstract 5
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
Classifications
-
- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/18—Automatic changing of the traffic direction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Alarm Systems (AREA)
- Communication Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH592768A CH490772A (de) | 1968-04-22 | 1968-04-22 | Verfahren zur Uebermittlung des Befehls "sendeaufforderung" von der Sende- zur Empfangsstation bei FM- oder PM-Übertragungssystemen auf Fernsprech-Verbindungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1231933A true GB1231933A (enrdf_load_stackoverflow) | 1971-05-12 |
Family
ID=4301646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1231933D Expired GB1231933A (enrdf_load_stackoverflow) | 1968-04-22 | 1969-04-21 |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT297808B (enrdf_load_stackoverflow) |
| BE (1) | BE731865A (enrdf_load_stackoverflow) |
| CH (1) | CH490772A (enrdf_load_stackoverflow) |
| DE (1) | DE1920399B1 (enrdf_load_stackoverflow) |
| DK (1) | DK145839C (enrdf_load_stackoverflow) |
| FR (1) | FR1599958A (enrdf_load_stackoverflow) |
| GB (1) | GB1231933A (enrdf_load_stackoverflow) |
| LU (1) | LU58765A1 (enrdf_load_stackoverflow) |
| NL (1) | NL155696B (enrdf_load_stackoverflow) |
| SE (1) | SE357121B (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010037679B4 (de) * | 2010-09-21 | 2022-01-13 | Bpw Bergische Achsen Kg | Handbetätigtes Werkzeug mit einem Außen-Mehrkant und einem weiteren Mehrkant |
-
1968
- 1968-04-22 CH CH592768A patent/CH490772A/de not_active IP Right Cessation
- 1968-12-23 FR FR1599958D patent/FR1599958A/fr not_active Expired
-
1969
- 1969-04-10 AT AT349669A patent/AT297808B/de not_active IP Right Cessation
- 1969-04-11 NL NL6905630A patent/NL155696B/xx unknown
- 1969-04-21 GB GB1231933D patent/GB1231933A/en not_active Expired
- 1969-04-21 DK DK217569A patent/DK145839C/da not_active IP Right Cessation
- 1969-04-22 DE DE19691920399 patent/DE1920399B1/de not_active Withdrawn
- 1969-04-22 SE SE568969A patent/SE357121B/xx unknown
- 1969-04-22 BE BE731865D patent/BE731865A/xx unknown
- 1969-06-02 LU LU58765D patent/LU58765A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT297808B (de) | 1972-04-10 |
| DK145839B (da) | 1983-03-14 |
| SE357121B (enrdf_load_stackoverflow) | 1973-06-12 |
| LU58765A1 (enrdf_load_stackoverflow) | 1969-10-28 |
| FR1599958A (enrdf_load_stackoverflow) | 1970-07-20 |
| CH490772A (de) | 1970-05-15 |
| BE731865A (enrdf_load_stackoverflow) | 1969-10-22 |
| DE1920399B1 (de) | 1970-04-23 |
| NL6905630A (enrdf_load_stackoverflow) | 1969-10-24 |
| DK145839C (da) | 1983-09-05 |
| NL155696B (nl) | 1978-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |