EP0138536A2
Expired / Lapsed
EP
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Announcement system
Assignee: British Telecommunications PLC
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Filing: 1984-10-05
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Granted: —
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Expires: 2004-10-05
Abstract
Abstract A system for providing announcements for transmission over a telecommunications network. Thy system includes a store (15) in which the announcements are stored. A processor (1) controls the writing and reading of announcements to and from the store. A bus (14) carries control signals to and from the processor and a second bus (20) carries digitally encoded audio signals in a synchronous time divided manner, which can be transmitted to the network via an interface (3). Data transfer between the buses is controlled by bus transfer modules (56). The structure is flexible and the system may include one or more code convert logic devices (50) for different types of speech encoding.
Inventors
- 👤 Alan Richard Willis
- 👤 Ian Peter Cole Bruce
- 👤 David Lynton Gibson
- 👤 Hugh Whitbread
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 09:03
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/487; H04Q; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A system for providing announcements comprising storage means (2) for storing said announcements in digital form, processing means (1) for controlling the writing and reading of said announcements to and from said storage means, a first bus (14) associated with said processing means, and a second bus, characterised in that the second bus (20) is for carrying digitally encoded audio signals in a synchronous time divided manner, and control means (5) are provided for controlling bidirectional transfer of said digitally encoded audio signals between said buses.
Claim 2
Independent Claim
86 words
A system for providing announcements comprising storage means (2) for storing said announcements in digital form, processing means (1) for controlling the writing and reading of said announcements to and from said storage means, a first bus (14) associated with said processing means, and a second bus, characterised in that the second bus (20) is for carrying digitally encoded audio signals in a synchronous time divided manner, and control means (5) are provided for controlling bidirectional transfer of said digitally encoded audio signals between said buses.
Claim 3
Dependent Claim
19 words
A system as claimed in claim 1, characterised by including mounting means (73) for the first and second buses.
Claim 4
Dependent Claim
45 words
A system as claimed in claim 1 or claim 2, characterised in that the control means includes code conversion means (50) for converting between a first form of coding used on the second bus and a second form of coding used by said storage means.
Claim 5
Dependent Claim
18 words
A system as claimed in claim 3, characterised in that said control means includes a third bus (51).
Claim 6
Dependent Claim
32 words
A system as claimed in claim 4, characterised by two or more code conversion means (50) for converting between said first form of coding and respective different forms of coding for storage.
Claim 7
Independent Claim
25 words
A system as claimed in any preceding claim, characterised by interface means (3) for providing an interface between the second bus and external telephone lines.
Claim 8
Dependent Claim
26 words
A system as claimed in claim 6, characterised by a signalling subsystem (4) for transferring telephone signalling information betweer the second bus and the processing means.
Claim 9
Dependent Claim
50 words
A system as claimed in claim 6 or claim 7, characterised in that the interface means includes a monitoring circuit for monitoring operation of one or more of the channels of the second bus and for preventing audio signals from being carried on a faulty channel of the second bus.
Claim 10
Independent Claim
20 words
A system as claimed in any preceding claim, characterised in that the storage means is accessible via said first bus.
References Cited (Backward Citations)
No citation records indexed.
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