US3665110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching arrangement for centrally controlled telephone exchange installation
Assignee: Siemens AG
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Filing: 1968-10-18
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Granted: 1972-05-23
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Expires: 1988-10-18
Abstract
Abstract A switching arrangement for long distance telephone exchange installations with central apparatus having a central control means and individual apparatus, the latter being divided into different groups, each group having a plurality of differently functioning individual apparatus. Individual buffer storage and/or code conversion systems are assigned to each group and is connected thereto over a transmission line of a first type transmitting parallel coded information. Each group is connected over a joint transmission line of a second type having series coded information.
Inventors
- 👤 Peter Gerke
- 👤 Karl Rutkowski
- 👤 Helmuth Joachim Bock
- 👤 Helmut Palsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
In a circuit arrangement for a telecommunication exchange installation having central apparatus comprised of central control means and individual apparatus, the latter comprising the following types of apparatus: switching matrices, subscriber connection circuits, dial signal receivers, internal and external connection sets and registers, a plurality of different ones of said types of individual apparatus forming a switching system, said switching system being coupled to said central control means over storage means for reciprocal information transmission between the various types of individual apparatus and said central control means, a first type of transmission line connecting said individual apparatus to said storage means and a second type of transmission line connecting said storage means to said central control, the improvement comprising: groups of said individual apparatus constituted by a plurality of different ones of said types of individual apparatus and at least one of said storage means being individually assigned to each said group and operable with each of the different types of individual apparatus forming the group thereby facilitating information transmission between said different types of individual apparatus and said central control means.
Claim 2
Dependent Claim
182 words
In a circuit arrangement for a telecommunication exchange installation having central apparatus comprised of central control means and individual apparatus, the latter comprising the following types of apparatus: switching matrices, subscriber connection circuits, dial signal receivers, internal and external connection sets and registers, a plurality of different ones of said types of individual apparatus forming a switching system, said switching system being coupled to said central control means over storage means for reciprocal information transmission between the various types of individual apparatus and said central control means, a first type of transmission line connecting said individual apparatus to said storage means and a second type of transmission line connecting said storage means to said central control, the improvement comprising: groups of said individual apparatus constituted by a plurality of different ones of said types of individual apparatus and at least one of said storage means being individually assigned to each said group and operable with each of the different types of individual apparatus forming the group thereby facilitating information transmission between said different types of individual apparatus and said central control means.
Claim 3
Dependent Claim
22 words
The switching arrangement recited in claim 8 wherein said storage means are connected with said central control means by individual transmission paths.
Claim 4
Dependent Claim
58 words
The switching arrangement recited in claim 8 further comprising: slow-operating transmission and receiving switching devices operatively associated with the first type transmission lines, the latter being multiconductor lines and transmitting information in parallel coded form; relatively fast-operating transmission and receiving switching devices operatively associated with the second type transmission lines, the latter transmitting information in series coded form.
Claim 5
Dependent Claim
22 words
The switching arrangement recited in claim 3 wherein individual information transmissions comprise a plurality of equal size groups of binary code elements.
Claim 6
Dependent Claim
22 words
The switching arrangement recited in claim 4 wherein the plurality of groups of binary code elements are transmitted in series coded form.
Claim 7
Dependent Claim
17 words
The switching arrangement recited in claim 5 wherein the code elements comprising each group are transmitted simultaneously.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |