GB970600A - Improvements to crossbar switches - Google Patents
Improvements to crossbar switchesInfo
- Publication number
- GB970600A GB970600A GB1368963A GB1368963A GB970600A GB 970600 A GB970600 A GB 970600A GB 1368963 A GB1368963 A GB 1368963A GB 1368963 A GB1368963 A GB 1368963A GB 970600 A GB970600 A GB 970600A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- april
- magnets
- division
- select
- 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
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H67/00—Electrically-operated selector switches
- H01H67/22—Switches without multi-position wipers
- H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Exchange Systems With Centralized Control (AREA)
Abstract
970,600. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. April 5, 1963 [April 11, 1962], No. 13689/63. Addition to 964,247. Drawings to Specification. Heading H4K. [Also in Division H1] A common control circuit of a type similar to that described in the parent Specification and driven by timing pulses produces a sequence of coded signals to bring about the operation of the required select and hold magnets in a plurality of cross-bar switches. The completion of a connection through any switch (see Division H1) requires the operation of an additional contact set in the same column as the contact set to be operated but in a different row, so that two select magnets and one hold magnet are involved. These additional contact sets assist in discriminating between the plurality of contact sets operable at any one cross-point and are distributed diagonally across the array of cross-points, one in each column.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR894069A FR1331967A (en) | 1962-04-11 | 1962-04-11 | Improvements to the method of wiring contacts in crossbar switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB970600A true GB970600A (en) | 1964-09-23 |
Family
ID=8776598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1368963A Expired GB970600A (en) | 1962-04-11 | 1963-04-05 | Improvements to crossbar switches |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1331967A (en) |
| GB (1) | GB970600A (en) |
-
1962
- 1962-04-11 FR FR894069A patent/FR1331967A/en not_active Expired
-
1963
- 1963-04-05 GB GB1368963A patent/GB970600A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1331967A (en) | 1963-07-12 |
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