Patent US4638453A successfully refreshed from Google Patents.
US4638453A
Expired / Lapsed
US
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Signal processing unit
Assignee: Motorola Solutions Inc
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Filing: 1983-03-28
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Granted: 1987-01-20
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Expires: 2003-03-28
Abstract
Abstract This invention relates to a signal processing unit typically in the form of a status and control unit forming part of a supervisory control system. The unit monitors status inputs and transmits messages to a central station indicating the status of these inputs and also has control outputs which may be activated on a command from a central station to provide a control function. In response to a predetermined stimulus such as a change of state at a status input the unit generates a new message for a neighboring status and control unit by incrementing or decrementing its own address to obtain a new address for transmission. In this way messages may be transmitted between units as well as between the central station and the units thereby allowing communication to units which lie outside the range of the central station itself. The invention has particular application in supervisory control systems.
Inventors
- 👤 Paul Gran
- 👤 Haim Feiner
- 👤 Nissim Ben-Dayan
- 👤 Marian Stefaniu
- 👤 Yechiam Mar-Chaim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:27
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/003; G08B26/00; G08B26/007; H; H04; H04Q; H04Q9/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
A signal processing unit for use in a supervisory control system having at least one central station for communicating with a plurality of said units each identified by an unit address, said signal processing unit comprising: means for receiving messages including at least an address signal and an from said central station and/or said preceding unit; processing means for processing said information signal including means for modifying said address signal to provide a destination signal and preambling said destination signal to said processed information signal; and means for transmitting said processed information signal preambled by said destination signal to said central station and/or said succeeding unit.
Claim 2
Dependent Claim
106 words
A signal processing unit for use in a supervisory control system having at least one central station for communicating with a plurality of said units each identified by an unit address, said signal processing unit comprising: means for receiving messages including at least an address signal and an from said central station and/or said preceding unit; processing means for processing said information signal including means for modifying said address signal to provide a destination signal and preambling said destination signal to said processed information signal; and means for transmitting said processed information signal preambled by said destination signal to said central station and/or said succeeding unit.
Claim 3
Dependent Claim
65 words
A signal processing unit as claimed in claim 9 wherein the unit includes one or more control outputs each operable under the control of a processing means to provide a control signal output and the said change of state at one or more of the status inputs is derived by coupling the said one or more status inputs to respective ones of the control outputs.
Claim 4
Dependent Claim
23 words
A signal processing unit as claimed in claim 2 wherein the coupling between status inputs and control outputs is a hard wired coupling.
Claim 5
Dependent Claim
21 words
A signal processing unit as claimed in claim 2 wherein the coupling is provided by the processing means under programme control.
Claim 6
Dependent Claim
16 words
A signal processing unit as claimed in claim 1 wherein the processing means is a microprocessor.
Claim 7
Dependent Claim
20 words
A signal processing unit as claimed in claim 1, which includes a digital storage means for storing the unit address.
Claim 8
Dependent Claim
31 words
A signal processing unit as claimed in claim 1, wherein the processing means is operative to increment or decrement the unit address by a predetermined amount to provide said destination signal.
Claim 9
Dependent Claim
106 words
A signal processing unit for use in a supervisory control system having at least one central station for communicating with a plurality of said units each identified by an unit address, said signal processing unit comprising: means for receiving messages including at least an address signal and an information signal from said central station and/or said preceding unit means for responsive to a predetermined stimulus for modifying the unit address to provide a destination signal, including means for preambling said destination signal to said information signal; and means for transmitting said information signal preambled by said destination signal to said central station and/or said succeeding unit.
Claim 10
Dependent Claim
106 words
A signal processing unit for use in a supervisory control system having at least one central station for communicating with a plurality of said units each identified by an unit address, said signal processing unit comprising: means for receiving messages including at least an address signal and an information signal from said central station and/or said preceding unit means for responsive to a predetermined stimulus for modifying the unit address to provide a destination signal, including means for preambling said destination signal to said information signal; and means for transmitting said information signal preambled by said destination signal to said central station and/or said succeeding unit.
Claim 11
Dependent Claim
38 words
A signal processing unit as claimed in claim 8 wherein the signal processing unit includes one or more status monitoring inputs, the predetermined stimulus comprising a change of state detected at one or more of the status inputs.
Claim 12
Independent Claim
122 words
A method of communicating messages between at least one central station and a plurality of signal processing units each having a predetermined unit address, comprising the steps of: at the central station; (a) transmitting a message comprised of at least an information signal preambled by an address signal to the plurality of signal processing units; at the signal processing units; (a) receiving said message from said central station; (b) processing said information signal if said address signal matches the predetermined unit address of the signal processing unit; (c) modifying said address signal to provide a destination signal; (d) transmitting a message comprised of at least said processed information signal preambled by said destination signal to the remaining plurality of signal processing units.
Claim 13
Independent Claim
122 words
A method of communicating messages between at least one central station and a plurality of signal processing units each having a predetermined unit address, comprising the steps of: at the central station; (a) transmitting a message comprised of at least an information signal preambled by an address signal to the plurality of signal processing units; at the signal processing units; (a) receiving said message from said central station; (b) processing said information signal if said address signal matches the predetermined unit address of the signal processing unit; (c) modifying said address signal to provide a destination signal; (d) transmitting a message comprised of at least said processed information signal preambled by said destination signal to the remaining plurality of signal processing units.
Claim 14
Independent Claim
153 words
A method of communicating messages between at least two of a plurality of signal processing units each having a predetermined unit address, comprising the steps of: at a first signal processing unit; (a) detecting a change of state in at least one of a plurality of status monitoring inputs; (b) generating an address signal; (c) generating an information signal; (d) transmitting a message comprised of at least said information signal preambled by said address signal to the plurality of signal processing units; at the plurality of signal processing units; (a) receiving said message from said first signal processing unit; (b) processing said information signal if said address signal matches the predetermined unit address of the signal processing unit; (c) modifying said address signal to provide a destination signal; (d) transmitting a message comprised of at least said processed information signal preambled by said destination signal to the remaining plurality of signal processing units.
Claim 15
Independent Claim
153 words
A method of communicating messages between at least two of a plurality of signal processing units each having a predetermined unit address, comprising the steps of: at a first signal processing unit; (a) detecting a change of state in at least one of a plurality of status monitoring inputs; (b) generating an address signal; (c) generating an information signal; (d) transmitting a message comprised of at least said information signal preambled by said address signal to the plurality of signal processing units; at the plurality of signal processing units; (a) receiving said message from said first signal processing unit; (b) processing said information signal if said address signal matches the predetermined unit address of the signal processing unit; (c) modifying said address signal to provide a destination signal; (d) transmitting a message comprised of at least said processed information signal preambled by said destination signal to the remaining plurality of signal processing units.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |