Patent US3930125A successfully refreshed from Google Patents.
US3930125A
Expired / Lapsed
US
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Connection network for a time switching automatic electronic exchange
Assignee: Jeumont Schneider SA
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Filing: 1974-07-05
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Granted: 1975-12-30
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Expires: 1994-07-05
Abstract
Abstract A connection network for an electronic time switching PCM automatic exchange, wherein a given PCM code in an incoming time slot of a line may be routed to any desired time slot in any one of a group of output PCM channels.
Inventors
- 👤 Jean A Picandet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:00
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
163 words
A connection network for connecting incoming channels to outgoing channels in an automatic electronic time switching PCM exchange comprising: a first set of circulating shift registers for each incoming PCM channel, the number of circulating shift registers in each set equal to the number of time slots in an incoming channel, said first set of circulating shift registers providing a serial bit output, a set of multiplexing circuits for each outgoing channel the number of circuits in each set equal in number to the number of incoming channels, means for directly connecting the serial bit output from said first set of circulating shift registers to said multiplexing circuits, means for connecting said multiplexing circuits to said outgoing channels, means for providing address codes to said multiplexing circuits for identifying a circulating shift register within said first set of circulating shift registers for each incoming PCM channel, and clock means for shifting said circulating shift registers and for actuating said address code providing means.
Claim 2
Dependent Claim
163 words
A connection network for connecting incoming channels to outgoing channels in an automatic electronic time switching PCM exchange comprising: a first set of circulating shift registers for each incoming PCM channel, the number of circulating shift registers in each set equal to the number of time slots in an incoming channel, said first set of circulating shift registers providing a serial bit output, a set of multiplexing circuits for each outgoing channel the number of circuits in each set equal in number to the number of incoming channels, means for directly connecting the serial bit output from said first set of circulating shift registers to said multiplexing circuits, means for connecting said multiplexing circuits to said outgoing channels, means for providing address codes to said multiplexing circuits for identifying a circulating shift register within said first set of circulating shift registers for each incoming PCM channel, and clock means for shifting said circulating shift registers and for actuating said address code providing means.
Claim 3
Dependent Claim
24 words
A connection network as recited in claim 1 wherein the number of address code providing means is equal to the number of incoming channels.
Claim 4
Dependent Claim
46 words
A connection network as recited in claim 1 wherein said address code providing means comprises: a second set of shift registers for each first set of shift registers, said second set of shift registers connected to respective sets of multiplexing circuits for providing address codes thereto.
Claim 5
Dependent Claim
34 words
A connection network as recited in claim 3 wherein the number of stages in each shift register in said second set is equal to the number of time slots in said PCM incoming channel.
Claim 6
Dependent Claim
56 words
A connection network as recited in claim 4 wherein the number of shift registers in said second set of shift registers is equal to or greater than n, where 2n is equal to the number of stages in each of said first set of shift registers, said second set of shift registers being circulating shift registers.
Claim 7
Dependent Claim
29 words
A connection network as recited in claim 1 further comprising a plurality of multiplexing circuit identifying means for providing codes for identifying each multiplexing circuit within a given set.
Claim 8
Dependent Claim
35 words
A connection network as recited in claim 6 wherein each identifying means comprises a plurality of shift registers having a number of stages equal to the number of time slots in the PCM incoming channel.
Claim 9
Dependent Claim
20 words
A connection network as recited in claim 7 wherein said shift registers of said identifying means are circulating shift registers.
Claim 10
Dependent Claim
54 words
A connection network as recited in claim 1 wherein said means for connecting said multiplexing circuit to said outgoing channels comprises gate means for directly connecting said multiplexing circuit to said outgoing channels whereby said serial bit output from each of said first set of circulating shift registers is fed to said outgoing channels.
References Cited (Backward Citations)
US3458659A
Cited
US3715505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |