GB759685A - Improvements in and relating to coding devices for use in automatic telephone exchanges - Google Patents
Improvements in and relating to coding devices for use in automatic telephone exchangesInfo
- Publication number
- GB759685A GB759685A GB2334450A GB2334450A GB759685A GB 759685 A GB759685 A GB 759685A GB 2334450 A GB2334450 A GB 2334450A GB 2334450 A GB2334450 A GB 2334450A GB 759685 A GB759685 A GB 759685A
- Authority
- GB
- United Kingdom
- Prior art keywords
- digital information
- pulses
- relating
- code signals
- automatic telephone
- 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
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Supply Of Signal Current (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
759,685. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd. Aug. 31, 1951 [Sept. 22, 1950], No. 23344/50. Drawings to Specification. Class 40 (4). Dialled digits are registered on a succession of switches whose bank terminals are fed by different code signals and the outputs from the wipers are fed together with other non-digital information to an output terminal. The code signals may take the form of pulses, a different pulse position being allocated for each digit and each digital position. The non-digital information, which may be the identity of a communication channel through the exchange may be impressed on the output either by gating the digital information only during prescribed periods indicative of the non- digital information ; or by the provision of further pulses occurring after the pulses denoting the digital information. The description is substantially identical with that referring to Figs. 3 and 17 of Specification 759,682. Specification 759,684 also is referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2334450A GB759685A (en) | 1950-09-22 | 1950-09-22 | Improvements in and relating to coding devices for use in automatic telephone exchanges |
DEG6971A DE969248C (en) | 1950-09-22 | 1951-09-15 | Circuit arrangement for converting a group of series of dialing currents into control signals and identifying a connection channel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2334450A GB759685A (en) | 1950-09-22 | 1950-09-22 | Improvements in and relating to coding devices for use in automatic telephone exchanges |
Publications (1)
Publication Number | Publication Date |
---|---|
GB759685A true GB759685A (en) | 1956-10-24 |
Family
ID=10194120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2334450A Expired GB759685A (en) | 1950-09-22 | 1950-09-22 | Improvements in and relating to coding devices for use in automatic telephone exchanges |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE969248C (en) |
GB (1) | GB759685A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1158126B (en) * | 1958-11-08 | 1963-11-28 | Josef Dirr | Coordinate switch for digit storage for telecommunications, especially telephone switching systems |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB596670A (en) * | 1945-04-18 | 1948-01-08 | Samuel Mellor Taylor | Improvements in or relating to thermionic valve circuits |
DE452242C (en) * | 1925-03-17 | 1927-11-11 | Karl Hersen | Circuit arrangement for memory transmitters in telephone systems |
DE478923C (en) * | 1926-02-10 | 1929-07-13 | Siemens & Halske Akt Ges | Circuit arrangement for telephone systems with dialer operation |
CH255842A (en) * | 1941-07-11 | 1948-07-15 | Standard Telephon & Radio Ag | Telecommunication system. |
-
1950
- 1950-09-22 GB GB2334450A patent/GB759685A/en not_active Expired
-
1951
- 1951-09-15 DE DEG6971A patent/DE969248C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE969248C (en) | 1958-05-14 |
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