US5604487A
Expired / Lapsed
US
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Apparatus and method for user-selective data communication with verification
Assignee: Lockheed Martin Corp
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Filing: 1993-07-30
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Granted: 1997-02-18
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Expires: 2013-07-30
Abstract
Abstract Apparatus and method for communication of data from a holder to a customer or other requester of such data. The requester identifies to the holder a specific data product or other piece of data known to be held by the holder. The holder responds with a message acknowledging that request and providing at least one characteristic of the data so requested. The requester utilizes the information contained in that acknowledgement to determine whether the requester wants the data that it has so identified. The requester then informs the holder, based on that determination, whether the requester still wants the holder to provide that data to the requester. In response to that message from the requester, the holder either transmits the requested data, or awaits a further request from that requester, or terminates the communication. This apparatus and method further includes a provision for verification of proper communication of requested data. Upon receipt of requested data, the requester determines the value of a predetermined error checking or fault detection code such as a checksum. The requester then provides this value or code to the holder as part of the requester's acknowledgement of receipt of the requested data. This value or code is then compared by the holder with an internally generated such value or code to determine whether the transmitted data has been properly received. The holder thereby is also assured that the recipient of the data has taken necessary steps to verify the accuracy or integrity of the communicated data.
Inventors
- 👤 John D. Frymier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:00
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0061; H04L1/12; H04L1/14; H04L1/16; H04L1/1607; H04L1/1671; H04L1/18; H04L1/1803
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
135 words
A method for verified communication of data from a holder of such data to a requester of such data, comprising the steps of: determination by the holder of a respective first error checking/fault detection indicator for each of a plurality of data items stored by the holder; identification of one of said plurality of data items by the requester to the holder; provision of said one data item to the requester; determination by the requester of a second error checking/fault detection indicator, corresponding in nature to the first indicator, for said one data item; provision, by the requester to the holder, of the second indicator; comparison, by the holder, of the first and second indicators; and provision by the holder to the requester of a message indicating whether the first and second indicators are identical.
Claim 2
Independent Claim
135 words
A method for verified communication of data from a holder of such data to a requester of such data, comprising the steps of: determination by the holder of a respective first error checking/fault detection indicator for each of a plurality of data items stored by the holder; identification of one of said plurality of data items by the requester to the holder; provision of said one data item to the requester; determination by the requester of a second error checking/fault detection indicator, corresponding in nature to the first indicator, for said one data item; provision, by the requester to the holder, of the second indicator; comparison, by the holder, of the first and second indicators; and provision by the holder to the requester of a message indicating whether the first and second indicators are identical.
Claim 3
Dependent Claim
18 words
A method as defined in claim 1 wherein each of the plurality of data items comprises radar data.
Claim 4
Dependent Claim
82 words
A method as defined in claim 2 wherein said identification step comprises: sending by the requester to the holder an identifying signal identifying the one data item by radar product type of the one data item and by radar site from which the one data item originated; and after said step of sending an identifying signal, determining whether the identifying signal identifies a valid radar product and a valid radar site, and if not then sending an error signal to the requester.
Claim 5
Dependent Claim
18 words
A method as defined in claim 1 wherein each of the plurality of data items comprises image data.
Claim 6
Dependent Claim
19 words
A method as defined in claim 1 wherein each of the plurality of data items comprises weather radar data.
Claim 7
Dependent Claim
82 words
A method as defined in claim 5 wherein said identification step comprises: sending by the requester to the holder an identifying signal identifying the one data item by radar product type of the one data item and by radar site from which the one data item originated; and after said step of sending an identifying signal, determining whether the identifying signal identifies a valid radar product and a valid radar site, and if not then sending an error signal to the requester.
Claim 8
Dependent Claim
145 words
Apparatus for verified communication of data from a holder of such data to a requester of such data, comprising: means for determination by the holder of a respective first error checking/fault detection indicator for each of a plurality of data items stored by the holder; means for identification of one of said plurality of data items by the requester to the holder; means for provision of said one data item to the requester; means for determination by the requester of a second error checking/fault detection indicator, corresponding in nature to the first indicator, for said one data item; means for provision, by the requester to the holder, of the second indicator; means for comparison, by the holder, of the first and second indicators; and means for provision by the holder to the requester of a message indicating whether the first and second indicators are identical.
Claim 9
Dependent Claim
145 words
Apparatus for verified communication of data from a holder of such data to a requester of such data, comprising: means for determination by the holder of a respective first error checking/fault detection indicator for each of a plurality of data items stored by the holder; means for identification of one of said plurality of data items by the requester to the holder; means for provision of said one data item to the requester; means for determination by the requester of a second error checking/fault detection indicator, corresponding in nature to the first indicator, for said one data item; means for provision, by the requester to the holder, of the second indicator; means for comparison, by the holder, of the first and second indicators; and means for provision by the holder to the requester of a message indicating whether the first and second indicators are identical.
Claim 10
Dependent Claim
17 words
Apparatus as defined in claim 7 wherein each of the plurality of data items comprises radar data.
Claim 11
Dependent Claim
80 words
Apparatus as defined in claim 8 wherein: said means for identification comprises means for generating an identifying signal identifying the one data item by radar product type of the one data item and by radar site from which the one data item originated; and said holder comprises means, responsive to the identifying signal, for determining whether the identifying signal identifies a valid radar product and a valid radar site, and, if not, for sending an error signal to said requester.
Claim 12
Dependent Claim
18 words
Apparatus as defined in claim 7 wherein each of the plurality of data items comprises weather radar data.
Claim 13
Dependent Claim
80 words
Apparatus as defined in claim 10 wherein: said means for identification comprises means for generating an identifying signal identifying the one data item by radar product type of the one data item and by radar site from which the one data item originated; and said holder comprises means, responsive to the identifying signal, for determining whether the identifying signal identifies a valid radar product and a valid radar site, and, if not, for sending an error signal to said requester.
Claim 14
Dependent Claim
17 words
Apparatus as defined in claim 7 wherein each of the plurality of data items comprises image data.
Claim 15
Dependent Claim
17 words
Apparatus as defined in claim 7 wherein each of the plurality of data items comprises an image.
Claim 16
Dependent Claim
18 words
Apparatus as defined in claim 7 wherein each of the plurality of data items comprises a radar image.
Claim 17
Dependent Claim
97 words
Apparatus as defined in claim 14 wherein: said means for identification comprises means for identification by the requester to the holder of one of said plurality of data items by radar product type of the one data item and by radar site at which the one data item originated; and said holder comprises means, responsive to said means for identification by type and site, for determining whether said means for identification by type and site has identified a valid radar product and a valid radar site, and, if not, for sending an error signal to said requester.
Claim 18
Dependent Claim
19 words
Apparatus as defined in claim 7 wherein each of the plurality of data items comprises a weather radar image.
Claim 19
Dependent Claim
97 words
Apparatus as defined in claim 16 wherein: said means for identification comprises means for identification by the requester to the holder of one of said plurality of data items by radar product type of the one data item and by radar site at which the one data item originated; and said holder comprises means, responsive to said means for identification by type and site, for determining whether said means for identification by type and site has identified a valid radar product and a valid radar site, and, if not, for sending an error signal to said requester.
Claim 20
Independent Claim
199 words
A method for verified selective communication of data from a holder of such data to a requester of such data, comprising the steps of: determination by the holder of a respective first error checking/fault detection indicator for each of a plurality of data items stored by the holder; identification of one of said plurality of data items by the requester to the holder; provision by the holder to the requester of a message including at least one characteristic of the one data item so requested; determination by the requester of the desirability of the requested data item based on that message; communication by the requester to the holder of whether the requester still wants the holder to transmit the requested one data item to the requester; provision of said one data item to the requester; determination by the requester of a second error checking/fault detection indicator, corresponding in nature to the first indicator, for said one data item; provision, by the requester to the holder, of the second indicator; comparison, by the holder, of the first and second indicators; and provision by the holder to the requester of a message indicating whether the first and second indicators are identical.
Claim 21
Independent Claim
199 words
A method for verified selective communication of data from a holder of such data to a requester of such data, comprising the steps of: determination by the holder of a respective first error checking/fault detection indicator for each of a plurality of data items stored by the holder; identification of one of said plurality of data items by the requester to the holder; provision by the holder to the requester of a message including at least one characteristic of the one data item so requested; determination by the requester of the desirability of the requested data item based on that message; communication by the requester to the holder of whether the requester still wants the holder to transmit the requested one data item to the requester; provision of said one data item to the requester; determination by the requester of a second error checking/fault detection indicator, corresponding in nature to the first indicator, for said one data item; provision, by the requester to the holder, of the second indicator; comparison, by the holder, of the first and second indicators; and provision by the holder to the requester of a message indicating whether the first and second indicators are identical.
Claim 22
Dependent Claim
18 words
A method as defined in claim 18 wherein each of the plurality of data items comprises radar data.
Claim 23
Dependent Claim
92 words
A method as defined in claim 19 wherein: said identification step comprises identifying one of said plurality of data items by radar product type of the one data item so requested and by radar site at which the one data item so requested originated; and said method further comprises the step of, after said identification step but before said message provision step, determining whether said identification step identifies a valid radar product and a valid radar site, and if not then sending an error signal to the requester instead of the message.
Claim 24
Dependent Claim
29 words
A method as defined in claim 20 wherein the at least one characteristic comprises size of the one data item and time of creation of the one data item.
Claim 25
Dependent Claim
19 words
A method as defined in claim 18 wherein each of the plurality of data items comprises weather radar data.
Claim 26
Dependent Claim
92 words
A method as defined in claim 22 wherein: said identification step comprises identifying one of said plurality of data items by radar product type of the one data item so requested and by radar site at which the one data item so requested originated; and said method further comprises the step of, after said identification step but before said message provision step, determining whether said identification step identifies a valid radar product and a valid radar site, and if not then sending an error signal to the requester instead of the message.
Claim 27
Dependent Claim
29 words
A method as defined in claim 23 wherein the at least one characteristic comprises size of the one data item and time of creation of the one data item.
Claim 28
Dependent Claim
18 words
A method as defined in claim 18 wherein each of the plurality of data items comprises image data.
Claim 29
Dependent Claim
29 words
A method as defined in claim 25 wherein the at least one characteristic comprises size of the one data item and time of creation of the one data item.
Claim 30
Dependent Claim
29 words
A method as defined in claim 18 wherein the at least one characteristic comprises size of the one data item and time of creation of the one data item.
References Cited (Backward Citations)
US4009344A
Cited
US4031512A
Cited
US4432090A
Cited
US4422171A
Cited
US4560985A
Cited
US4490785A
Cited
US4450572B1
Cited
US4592072B1
Cited
US4592072A
Cited
US4560985B1
Cited
US4450572A
Cited
US4777595A
Cited
US4490788A
Cited
US4584684A
Cited
US4488287A
Cited
US4584680A
Cited
US4768144A
Cited
US4754326A
Cited
US4649533A
Cited
US4584685A
Cited
US4715045A
Cited
US4868866A
Cited
US5105382A
Cited
US4677617A
Cited
US4712214A
Cited
US4740909A
Cited
US4831620A
Cited
US5146404A
Cited
US4839801A
Cited
US4999768A
Cited
US5067104A
Cited
US4926375A
Cited
US4780869A
Cited
US4845722A
Cited
US4897833A
Cited
US4887076A
Cited
US4908828A
Cited
US4853875A
Cited
US4972368A
Cited
US5068665A
Cited
US4992940A
Cited
US5193149A
Cited
US5020020A
Cited
US5077665A
Cited
US5181204A
Cited
US5163055A
Cited
US5096139A
Cited
US5297032A
Cited
WO1994028683A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-18 | 2000-08-19 | 2001-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-18 | 2004-08-19 | 2005-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-18 | 2008-08-19 | 2009-02-18 | $7700.00 | Window Closed / Lapsed |