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US3699525A
Expired / Lapsed
US
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Use of control words to change configuration and operating mode of a data communication system
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1970-11-27
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Granted: 1972-10-17
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Expires: 1990-11-27
Abstract
Abstract A data communication system comprising a processor, a memory, a communications controller and a plurality of terminal devices utilizes control words to select the configuration and to select the operating mode of the communication system. This system uses peripheral control words stored in memory to select the number of bits in message characters which may be used in the data communication system, to select the baud rate of the message which is received and to select a synchronous or asynchronous mode of transmission.
Inventors
- 👤 Aldis Klavins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:38
CPC Classifications
H; H04; H04L; H04L5/00; G; G06; G06F; G06F13/00; G06F13/38; G06F13/382; G06F13/385
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
125 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; means for using said peripheral control word to select a baud rate from a plurality of baud rates; and means for using said selected baud rate in transferring message characters between said controller and said terminal device, said means for using said peripheral control word and said means for using said selected baud rate each being coupled to said storage means.
Claim 2
Dependent Claim
125 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; means for using said peripheral control word to select a baud rate from a plurality of baud rates; and means for using said selected baud rate in transferring message characters between said controller and said terminal device, said means for using said peripheral control word and said means for using said selected baud rate each being coupled to said storage means.
Claim 3
Dependent Claim
53 words
A data communication system as defined in claim 1 wherein said means for using said peripheral control word to select a baud rate includes: an oscillator which develops a plurality of frequencies; and means connected to said oscillator for using said peripheral control word to select a frequency from the plurality of frequencies.
Claim 4
Dependent Claim
104 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the length of message characters which can be transferred between said controller and said terminal device, said means for using said peripheral control word being coupled to said storage means.
Claim 5
Dependent Claim
104 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the length of message characters which can be transferred between said controller and said terminal device, said means for using said peripheral control word being coupled to said storage means.
Claim 6
Dependent Claim
50 words
The combination as defined in claim 3 including: means connected to said storage means for using said peripheral control word to select a baud rate from a plurality of baud rates and means for using said selected baud rate in transferring message characters between said controller and said terminal device.
Claim 7
Dependent Claim
101 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the mode of transferring message characters between said controller and said terminal device, said means for using said peripheral control word being coupled to said storage means.
Claim 8
Dependent Claim
101 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the mode of transferring message characters between said controller and said terminal device, said means for using said peripheral control word being coupled to said storage means.
Claim 9
Dependent Claim
106 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the number of stop bits in a message character when said controller is operating in an asynchronous mode, said means for using said peripheral control word being coupled to said storage means.
Claim 10
Dependent Claim
106 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the number of stop bits in a message character when said controller is operating in an asynchronous mode, said means for using said peripheral control word being coupled to said storage means.
Claim 11
Dependent Claim
37 words
The combination as defined in claim 6 including: means connected to said storage means for using said peripheral control word to select the baud rate of message characters being transferred between said controller and said terminal device.
Claim 12
Dependent Claim
105 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to define the synchronizing character used by said communication system when said controller is operating in a synchronous mode, said means for using said peripheral control word being coupled to said storage means.
Claim 13
Dependent Claim
105 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to define the synchronizing character used by said communication system when said controller is operating in a synchronous mode, said means for using said peripheral control word being coupled to said storage means.
Claim 14
Dependent Claim
88 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to generate parity used in checking message characters sent by said controller to said terminal device.
Claim 15
Dependent Claim
88 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to generate parity used in checking message characters sent by said controller to said terminal device.
Claim 16
Dependent Claim
101 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to selectively check parity of message characters received by said controller from said terminal device, said means for using said peripheral control word being coupled to said storage means.
Claim 17
Dependent Claim
101 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to selectively check parity of message characters received by said controller from said terminal device, said means for using said peripheral control word being coupled to said storage means.
Claim 18
Dependent Claim
113 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the mode of operation, to select the length of message characters used, to determine if parity is generated and to select the baud rate used, said means for using said peripheral control word being coupled to said storage means.
Claim 19
Dependent Claim
113 words
In a data communication system having a processor, a memory having a plurality of peripheral control words, a communications controller and a terminal device, the combination comprising: storage means in said controller; means connected to said memory for selectively transferring a peripheral control word from said memory to said storage means in said controller, said means for transferring being coupled to said storage means; and means for using said peripheral control word to select the mode of operation, to select the length of message characters used, to determine if parity is generated and to select the baud rate used, said means for using said peripheral control word being coupled to said storage means.
References Cited (Backward Citations)
US3308439A
Cited
US3331055A
Cited
US3419852A
Cited
US3510843A
Cited
US3528060A
Cited
US3571806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |