US4136399A
Expired / Lapsed
US
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Dynamic channel allocation buffer matrix
Assignee: RCA Corp
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Filing: 1977-05-20
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Granted: 1979-01-23
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Expires: 1997-05-20
Abstract
Abstract Buffer division matrix for multiplexing and demultiplexing information signals in a communication system. A controller network controls information flow through a memory shared with a processor. The shared memory and the controller network comprise the buffer matrix, operating as a buffer division circuit switch and as a dynamic multiplexer/demultiplexer for high speed trunks. The buffer matrix is coupled to the processor as if the matrix were a memory. A control memory contains information about each subscriber and trunk to be serviced by the buffer matrix, information to control channel scan, and the characteristics of each channel. The control memory is initialized by the processor. Subscanning is implemented to increase the efficiency of the system.
Inventors
- 👤 Robert H. G. Chan
- 👤 Martin R. Mann
- 👤 Francis M. McDonnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:04
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54; H04L12/56
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
180 words
A communications control system including a plurality of buffer means for receiving and transmitting data, data memory means including addressing means, and data port means for storing data, comprising in combination: buffer selector means for coupling a selected one of said buffer means to the data port means of said data memory means; control memory means including addressing means and data port means for storing control words in addressed locations; control word register means having at least one section coupled to the data port means of said control memory means for storing active control words; means responsive to one section of the control word register means for coupling an address portion of an active control word to the addressing means of said data memory means; means responsive to a section of said control word register for selectively coupling another address portion of an active control word to the addressing means of said control memory means; and, means responsive to a section of said control word register for coupling a portion of an active control word to said buffer selector means.
Claim 2
Dependent Claim
180 words
A communications control system including a plurality of buffer means for receiving and transmitting data, data memory means including addressing means, and data port means for storing data, comprising in combination: buffer selector means for coupling a selected one of said buffer means to the data port means of said data memory means; control memory means including addressing means and data port means for storing control words in addressed locations; control word register means having at least one section coupled to the data port means of said control memory means for storing active control words; means responsive to one section of the control word register means for coupling an address portion of an active control word to the addressing means of said data memory means; means responsive to a section of said control word register for selectively coupling another address portion of an active control word to the addressing means of said control memory means; and, means responsive to a section of said control word register for coupling a portion of an active control word to said buffer selector means.
Claim 3
Dependent Claim
87 words
The invention as claimed in claim 1 wherein said buffer selector means includes: device addressing means for storing signals representative of a selected one of said buffer means; means coupling said device addressing means to the addressing means of said control memory means for retrieving control words related to said selected one of said buffer means; and, means responsive to said control word register for coupling a next device indicator portion of the active control word to said device addressing means for selecting a next buffer means.
Claim 4
Dependent Claim
57 words
The invention as claimed in claim 2 further comprising scan addressing means for storing signals designating a section of said control word register means and multiplexor means coupled to said control word register means and responsive to said scan addressing means for coupling the designated section of said control word register means to said device addressing means.
Claim 5
Dependent Claim
161 words
A communications control system having dynamic channel allocation capabilities comprising, in combination: a plurality of buffer means for receiving and transmitting data; data means for storing data at addressable locations; control memory means for storing subscriber control words and trunk control words, said trunk control words representative of frames of data to be transmitted, including address portions indicative of subscriber control words; control word register means for storing addressed control words retrieved from said control memory means; control means responsive to said control word register means for producing a plurality of control signals, means responsive to certain ones of said control signals for coupling a portion of said control word register means to said data memory means; means responsive to certain other control signals coupling a selected buffer to said data memory means for storing at an addressed location data to be transmitted within a frame; and means coupled to said control memory means for changing boundary locations of a frame.
Claim 6
Dependent Claim
161 words
A communications control system having dynamic channel allocation capabilities comprising, in combination: a plurality of buffer means for receiving and transmitting data; data means for storing data at addressable locations; control memory means for storing subscriber control words and trunk control words, said trunk control words representative of frames of data to be transmitted, including address portions indicative of subscriber control words; control word register means for storing addressed control words retrieved from said control memory means; control means responsive to said control word register means for producing a plurality of control signals, means responsive to certain ones of said control signals for coupling a portion of said control word register means to said data memory means; means responsive to certain other control signals coupling a selected buffer to said data memory means for storing at an addressed location data to be transmitted within a frame; and means coupled to said control memory means for changing boundary locations of a frame.
Claim 7
Dependent Claim
28 words
The invention as claimed in claim 4, further comprising means coupled to said control memory means for inserting in a frame data representative of changes in frame boundaries.
References Cited (Backward Citations)
US3632882A
Cited
US3732548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |