Patent US4901348A successfully refreshed from Google Patents.
US4901348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transmission security arrangement for a plurality of data stations sharing access to a communication network
Assignee: Nokia of America Corp
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Filing: 1985-12-24
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Granted: 1990-02-13
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Expires: 2005-12-24
Abstract
Abstract An arrangement for securing data transmissions to and from one data device from among a plurality of data devices sharing a common interface is disclosed. In a data communication network, a master communication bus connects to a plurality of data transmitting and receiving devices via a single interface. The disclosed arrangement provides circuitry in the common interface which generates a jamming signal to all devices connected to the interface except for that one device which is either transmitting or receiving a data-transmission. The jamming signal inhibits all the connected devices from monitoring and detecting the data transmission processes of the interface. The one transmitting and receiving device is enabled to either transmit or receive data during the generation of the jamming signal which ensures a secure data transmission and prevents "eavesdropping" by the other devices. The jamming signal is removed at the conclusion of the data transmission to or from the one device.
Inventors
- 👤 John M. Nichols
- 👤 Richard A. Windhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
H; H04; H04L; H04L63/00; H04L63/14; H04L63/1441; H04L12/00; H04L12/02; H04L12/22; H04L12/28; H04L12/40; H04L12/40006; H04L12/40032; H04L12/407; H04L12/413
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
149 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a data security arrangement in said single interface device for providing privacy of data transmissions comprising: means for detecting the origination of a data transmission for one of said group of data terminal devices; means responsive to a detected data transmission origination for identifying the destination one of said group of data terminal devices associated with said data transmission origination; means responsive to said identifying means for transmitting said data transmission only via an individual, non-broadcast link to said destination data terminal device; and means responsive to said identifying means for transmitting a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 2
Dependent Claim
149 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a data security arrangement in said single interface device for providing privacy of data transmissions comprising: means for detecting the origination of a data transmission for one of said group of data terminal devices; means responsive to a detected data transmission origination for identifying the destination one of said group of data terminal devices associated with said data transmission origination; means responsive to said identifying means for transmitting said data transmission only via an individual, non-broadcast link to said destination data terminal device; and means responsive to said identifying means for transmitting a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 3
Dependent Claim
73 words
The arrangement of claim 1 further comprising: a plurality of transmit/receive regulator devices associated on a one-to-one basis with said data terminal devices of said group for interconnecting said data terminal devices of said group to said single interface device; and means responsive to said identifying means for enabling the one of said regulator devices associated with said destination data terminal device to transmit said data transmission to said destination data terminal device.
Claim 4
Dependent Claim
60 words
The arrangement of claim 2 further comprising: means for generating said spurious data transmission; and means responsive to said identifying means for enabling all of said regulator devices, save said regulator device associated with said destination data terminal device, for transmitting said spurious data transmission to all of said group of data terminal devices, save said destination data terminal device.
Claim 5
Dependent Claim
36 words
The arrangement of claim 3 further comprising: means for detecting the termination of said data transmission; and means responsive to a detected data transmission termination for disabling said generating means to terminate said spurious data transmission.
Claim 6
Dependent Claim
45 words
The arrangement of claim 1 further comprising: means for detecting multiple concurrent data transmissions; and wherein said spurious data transmission means are responsive to a detected multiple concurrent data transmission for transmitting said spurious data transmission to all of said group of data terminal devices.
Claim 7
Dependent Claim
116 words
In a data communication network interconnecting a plurality of data terminal devices via interface devices where a group of said data terminal devices share a single interface device, a data transmission security arrangement in said single interface device for providing privacy of data transmissions comprising: means for detecting the origination of a data transmission between said interface device and one of said group of data terminal devices associated with said interface device; and means responsive to a detected data transmission origination for transmitting a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said data terminal devices in said group of data terminal devices save said one data terminal device.
Claim 8
Dependent Claim
116 words
In a data communication network interconnecting a plurality of data terminal devices via interface devices where a group of said data terminal devices share a single interface device, a data transmission security arrangement in said single interface device for providing privacy of data transmissions comprising: means for detecting the origination of a data transmission between said interface device and one of said group of data terminal devices associated with said interface device; and means responsive to a detected data transmission origination for transmitting a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said data terminal devices in said group of data terminal devices save said one data terminal device.
Claim 9
Dependent Claim
73 words
The arrangement of claim 6 further comprising: a plurality of transmit/receive regulator devices associcated on a one-to-one basis with said data terminal devices of said group for interconnecting said data terminal devices of said group to said single interface device; and means responsive to said detecting means for enabling the one of said regulator devices associated with said one data terminal device to transmit said data transmission to said one data terminal device.
Claim 10
Dependent Claim
60 words
The arrangement of claim 7 further comprising: means for generating said spurious data transmission; and means responsive to said detecting means for enabling all of said regulator devices, save said regulator device associated with said one data terminal device, for transmitting said spurious data transmission to all of said group of data terminal devices, save said one data terminal device.
Claim 11
Dependent Claim
61 words
The arrangement of claim 7 further comprising: means for generating said spurious data transmission; and means responsive to said detecting means for enabling all of said regulator devices, save the regulator device associated with said one data terminal device, for transmitting said spurious data transmission to all of said data terminal devices in said group save said one data terminal device.
Claim 12
Dependent Claim
38 words
The arrangement of claim 8 or 9 further comprising: means for detecting the termination of said data transmission; and means responsive to a detected data transmission termination for disabling said generating means to terminate said spurious data transmission.
Claim 13
Dependent Claim
45 words
The arrangement of claim 6 further comprising: means for detecting multiple concurrent data transmissions; and wherein said spurious data transmission means are responsive to a detected multiple concurrent data transmission for transmitting said spurious data transmission to all of said group of data terminal devices.
Claim 14
Dependent Claim
124 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a data transmission security arrangement in said single interface device for providing privacy of data transmissions comprising: means for detecting the origination of a data transmission for one of said group of data terminal devices; means responsive to a detected data transmission origination for identifying the destination one of said group of data terminal devices associated with said data transmission origination; and means responsive to said identifying means for interrupting the transmission of said data transmission via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 15
Dependent Claim
124 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a data transmission security arrangement in said single interface device for providing privacy of data transmissions comprising: means for detecting the origination of a data transmission for one of said group of data terminal devices; means responsive to a detected data transmission origination for identifying the destination one of said group of data terminal devices associated with said data transmission origination; and means responsive to said identifying means for interrupting the transmission of said data transmission via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 16
Dependent Claim
50 words
The arrangement of claim 12 wherein said interrupting means comprises: means for generating a spurious data transmission; and means responsive to said identifying means for transmitting said spurious data transmission, coexistent with said data transmission, to all of said group of data terminal devices save said destination data terminal device.
Claim 17
Dependent Claim
73 words
The arrangement of claim 13 further comprising: a plurality of transmit/receive regulator devices associated on a one-to-one basis with said data terminal devices of said group for interconnecting said data terminal devices of said group to said single interface device; and means responsive to said identifying means for enabling the one of said regulator devices associated with said destination data terminal device to transmit said data transmission to said destination data terminal device.
Claim 18
Dependent Claim
52 words
The arrangement of claim 14 further comprising: means responsive to said identifying means for enabling all of said regulator devices, save said regulator device associated with said destination data terminal device, for transmitting said spurious data transmission to all of said group of data terminal devices, save said destination data terminal device.
Claim 19
Dependent Claim
36 words
The arrangement of claim 15 further comprising: means for detecting the termination of said data transmission; and means responsive to a detected data transmission termination for disabling said generating means to terminate said spurious data transmission.
Claim 20
Dependent Claim
42 words
The arrangement of claim 13 further comprising: means for detecting multiple concurrent data transmissions; and wherein said interrupting means are responsive to a detected multiple concurrent data transmission for interrupting said data transmission to all of said group of data terminal devices.
Claim 21
Dependent Claim
123 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a data security transmission method for providing privacy of data transmissions comprising the steps of: detecting the origination of a data transmission for one of said group of data terminal devices; identifying the destination one of said group of data terminal devices associated with said data transmission origination; transmitting said data transmission via an individual, non-broadcast link only to said destination data terminal device; and transmitting a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 22
Dependent Claim
123 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a data security transmission method for providing privacy of data transmissions comprising the steps of: detecting the origination of a data transmission for one of said group of data terminal devices; identifying the destination one of said group of data terminal devices associated with said data transmission origination; transmitting said data transmission via an individual, non-broadcast link only to said destination data terminal device; and transmitting a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 23
Dependent Claim
70 words
The method of claim 18, wherein a plurality of transmit/receive regulator devices are associated on a one-to-one basis with said dta terminal devices of said group for interconnecting said data terminal devices of said group to said single interface device, further comprising the step of: enabling the one of said regulator devices associated with said destination data terminal device to transmit said data transmission to said destination data terminal device.
Claim 24
Dependent Claim
54 words
The method of claim 19 further comprising the steps of: generating said spurious data transmission; and enabling all of said regulator devices, save said regulator device associated with said destination data terminal device, to transmit said spurious data transmission to all of said group of data terminal devices, save said destination data terminal device.
Claim 25
Dependent Claim
36 words
The method of claim 20 further comprising the steps of: detecting the termination of said data transmission; and disabling in response to a detected data transmission termination said generating means to terminate said spurious data transmission.
Claim 26
Dependent Claim
39 words
The method of claim 18 further comprising the steps of: detecting multiple concurrent data transmissions; and transmitting in response to a detected multiple concurrent data transmission said spurious data transmission to all of said group of data terminal devices.
Claim 27
Dependent Claim
112 words
In a data communication network interconnecting a plurality of data terminal devices via interface devices where a group of said data terminal devices share a single interface device, a method of data transmission security for providing privacy of data transmissions comprising the steps of: detecting the origination of a data transmission between said interface device and one of said group of data terminal devices associated with said interface device; and transmitting in response to a detected data transmission origination a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said data terminal devices in said group of data terminal devices save said one data terminal device.
Claim 28
Dependent Claim
112 words
In a data communication network interconnecting a plurality of data terminal devices via interface devices where a group of said data terminal devices share a single interface device, a method of data transmission security for providing privacy of data transmissions comprising the steps of: detecting the origination of a data transmission between said interface device and one of said group of data terminal devices associated with said interface device; and transmitting in response to a detected data transmission origination a spurious data transmission, coexistent with said data transmission, via individual, non-broadcast links to all of said data terminal devices in said group of data terminal devices save said one data terminal device.
Claim 29
Dependent Claim
70 words
The method of claim 23, wherein a plurality of transmit/receive regulator devices are associated on a one-to-one basis with said data terminal devices of said group for interconnecting said data terminal devices of said group to said single interface device, further comprising the step of: enabling the one of said regulator devices associated with said one data terminal device to transmit said data transmission to said one data terminal device.
Claim 30
Dependent Claim
54 words
The method of claim 24 further comprising the steps of: generating said spurious data transmission; and enabling all of said regulator devices, save said regulator device associated with said one data terminal device, for transmitting said spurious data transmission to all of said group of data terminal devices, save said one data terminal device.
Claim 31
Dependent Claim
55 words
The method of claim 25 further comprising the steps of: generating said spurious data transmission; and enabling all of said regulator devices, save the regulator device associated with said one data terminal device, for transmitting said spurious data transmission to all of said data terminal devices in said group save said one data terminal device.
Claim 32
Dependent Claim
38 words
The method of claim 25 or 26 further comprising the steps of: detecting the termination of said data transmission; and disabling in response to a detected data transmission termination said generating means to terminate said spurious data transmission.
Claim 33
Dependent Claim
39 words
The method of claim 23 further comprising the steps of: detecting multiple concurrent data transmissions; and transmitting in response to a detected multiple concurrent data transmission said spurious data transmission to all of said group of data terminal devices.
Claim 34
Dependent Claim
114 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a method of providing data transmission security for providing privacy of data transmissions comprising the steps of: detecting the origination of a data transmission for one of said group of data terminal devices; identifying in response to a detected data transmission origination the destination one of said group of data terminal devices associated with said data transmission origination; and interrupting the transmission of said data transmission via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 35
Dependent Claim
114 words
In a data communication network interconnecting a plurality of data terminal devices via corresponding interface devices where a group of said data terminal devices share a single interface device, a method of providing data transmission security for providing privacy of data transmissions comprising the steps of: detecting the origination of a data transmission for one of said group of data terminal devices; identifying in response to a detected data transmission origination the destination one of said group of data terminal devices associated with said data transmission origination; and interrupting the transmission of said data transmission via individual, non-broadcast links to all of said group of data terminal devices save said destination data terminal device.
Claim 36
Dependent Claim
41 words
The method of claim 29 further comprising the steps of: generating a spurious data transmission; and transmitting said spurious data transmission, coexistent with said data transmission, to all of said group of data terminal devices save said destination data terminal device.
Claim 37
Dependent Claim
70 words
The method of claim 29, wherein a plurality of transmit/receive regulator devices are associated on a one-to-one basis with said data terminal devices of said group for interconnecting said data terminal devices of said group to said single interface device, further comprising the step of: enabling the one of said regulator devices associated with said destination data terminal device to transmit said data transmission to said destination data terminal device.
Claim 38
Dependent Claim
54 words
The method of claim 31 further comprising the steps of: generating said spurious data transmission; and enabling all of said regulator devices, save said regulator device associated with said destination data terminal device, for transmitting said spurious data transmission to all of said group of data terminal devices, save said destination data terminal device.
Claim 39
Dependent Claim
36 words
The method of claim 32 further comprising the steps of: detecting the termination of said data transmission; and disabling in response to a detected data transmission termination said generating means to terminate said spurious data transmission.
Claim 40
Dependent Claim
39 words
The method of claim 29 further comprising the steps of: detecting multiple concurrent data transmissions; and transmitting in response to a detected multiple concurrent data transmission said spurious data transmission to all of said group of data terminal devices.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |