Patent US1609009A successfully refreshed from Google Patents.
US3573384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic crosspoint switching array
Assignee: TDK Micronas GmbH
•
Filing: 1968-09-13
•
Granted: 1971-04-06
•
Expires: 1988-09-13
Abstract
Abstract A crosspoint switching array of four-layer semiconductor devices in which complete connection through the array is established by selecting and firing only the minimum number of crosspoints necessary for that complete connection to be made. Activation of said minimum number of crosspoints is independent of the inherent rate effect characteristics of the crosspoints devices. The crosspoint switching array provides a selection of crosspoints based on availability rather than on the device characteristics and array support equipment.
Inventors
- 👤 Panagiotis N Konidaris
- 👤 Richard E Buchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:36
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/521
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
187 words
A communications switching system comprising: a. array termination circuitry means including line/trunk circuits and link circuits; b. array scanning means coupled between line/trunk circuits and link circuits, and inl including an array scanner, array scanner control means and array gating circuitry means; c. a switching array of four-layer semiconductor crosspoints coupled between said line/trunk circuits an and link circuits, said swit switching array being subdivided into at least a primary section, an intermediate section and a secondary section, with each of said sections in turn being subdivided into a plurality of coordinate matrices of four-layer semiconductor crosspoint devices, the arrangement of which in conjundtion with said array scanning mean means permitting crosspoint activations to be independent of the inherent rate effect characteristics of said four-layer semiconductor crosspoints in establishing a connection through said switching array; and d. an input source to said array termination circuitry means causing the response thereto said array scanning means to esta establish in said switching array a complete connection by selecting and energizing the minimum number of said crosspoints needed for a complete connection between said line/trunk circuits and link circuit circuits;
Claim 2
Dependent Claim
187 words
A communications switching system comprising: a. array termination circuitry means including line/trunk circuits and link circuits; b. array scanning means coupled between line/trunk circuits and link circuits, and inl including an array scanner, array scanner control means and array gating circuitry means; c. a switching array of four-layer semiconductor crosspoints coupled between said line/trunk circuits an and link circuits, said swit switching array being subdivided into at least a primary section, an intermediate section and a secondary section, with each of said sections in turn being subdivided into a plurality of coordinate matrices of four-layer semiconductor crosspoint devices, the arrangement of which in conjundtion with said array scanning mean means permitting crosspoint activations to be independent of the inherent rate effect characteristics of said four-layer semiconductor crosspoints in establishing a connection through said switching array; and d. an input source to said array termination circuitry means causing the response thereto said array scanning means to esta establish in said switching array a complete connection by selecting and energizing the minimum number of said crosspoints needed for a complete connection between said line/trunk circuits and link circuit circuits;
Claim 3
Dependent Claim
68 words
A communications switching system according to claim 1 wherein said switching array includes at least a transmit array and a receive array, wherein substantially complete symmetry exists between said transmit and receive arrays, and wherein said receive array is responsive to said transmit array such that activation of a connection through said transmit array will result automatically t in the activation of the same connection/in said receive array;
Claim 4
Dependent Claim
110 words
A communicato communications switching system according to claim 1 wherein the crosspoints of each coordinate matrix in said switching array are coupled together in vertical and horizontal rows in which each crosspoint has the same polarity electrode associated with a vertical row and a second polarity electrode associated with a horizontal row, wherein s each vertical row of said coordinate matrices is connected to a horizontal row of a coordinate matrix belonging to an adjacent and succeeding section of said switching array and wherein each coordinate matrix of said intermediate section has at least one interconnection to each of the coordinate matrices of the switching array sections adjacent the thereto.
Claim 5
Dependent Claim
51 words
A communications switching system according to claim 3, wherein the horin horizontal rows of said coordinate matrices belonging to said primary section represent the inputs to said switching array and wherein the vertical rows of said coordinate matrices belonging to said d secondary section constitute the outputs of said switching array.
Claim 6
Dependent Claim
52 words
A communications switching system according to claim 1 further including the control gating circuitry means, coupled between said array termination circuitry e means and a said array scanner control means, for generating output pulses to said array scanner control means in response to corresponding input pulses from said array termination circuitry means.
Claim 7
Dependent Claim
55 words
AC A communications switching system according to claim 5 wherein said control gating circuitry means include line-dependent gating mean s responsive to said line/trunk circuits and link-dependent gating means responsive to said link circuits, and wherein said linedependent gating means and said link-depenc link-dependent Gating means are operatively coupled to said array scanner control means.
Claim 8
Dependent Claim
51 words
AC A communications switching system according to claim 6 wherein said control gating circuitry means include separate and identical line-dependent gating means associated with each primary section coordinate matrix, and wherein each input of the associated primary section coordinate matrix is coupled to said separate and identical line-depenc line-dependent gating means.
Claim 9
Dependent Claim
49 words
A communications switching system according to claim 6 wherein said control gating circuitry means include separate and identical link-dependent gating means associated with each secondary section coordinate matrix, and wherein each output of the associated secondary section coordinate matrix is coupled to said separate and identical link-dependent gating means.
Claim 10
Dependent Claim
61 words
A communications switching system according to claim 1 wherein a coordinate matrix of said switching array primary section is arranged with a coordinate matrix of said intermediate and secondary sections of said switching array to form a coordinate matrix group, and wherein said array ge gating circuitry means include a separate and identical gating arrangement associated with each coordinate matrix group.
Claim 11
Dependent Claim
62 words
A communi communications swti switching system according to claim 9 wherein said array gating circuitry means include input means i responsive to said array a scanner, and wherein said separate and identical gating arrangements associated with said coordinate matrix groups are sequentially printed by said array scanner in the course of a search for an idle path through a said switching array.
Claim 12
Dependent Claim
56 words
A communications switching system according to claim 9 wherein the intermec intermediate section coordinate matrix of each coordinate matrix groups group is coupled to the secondary section of said switching array via interconnections to each coordinate matric o matrix of said secondary section, and wherein said separate and identical gating arrangement is coupled to said interconnections.
Claim 13
Dependent Claim
45 words
A communications switching system according to claim 9 wherein said control gating circuitry means include line-c line-dependent gating means operatively coupled to a each of said separate and identical gating arrangements constituting the array gating circuitry means and to each output of said primary section.
References Cited (Backward Citations)
US3319009A
Cited
US3441677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |