Patent US5694418A successfully refreshed from Google Patents.
US5694418A
Expired / Lapsed
US
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System and method for determining EPL message transmission retries
Assignee: NCR Voyix Corp
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Filing: 1995-06-13
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Granted: 1997-12-02
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Expires: 2015-06-13
Abstract
Abstract A system and method which determines a number of electronic price label (EPL) data message transmission attempts to an EPL. A transmitter transmits a data message to the EPL. A receiver receives a return signal from the EPL. A storage system stores a status flag representing a first number of times the data message is transmitted by the transmitter to the EPL, the status flag being based upon an established signal to noise (S/N) ratio. A communication base station (CBS) determines a new S/N ratio from the return signal. A runtime analyzer program determines whether the new S/N ratio is below a range of S/N ratios that includes the established S/N ratio, and if it is, provides a new status flag representing a second number of transmission times greater than the first number of transmission times. The transmitter transmits a subsequent data message the second number of times.
Inventors
- 👤 John C. Goodwin, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:29
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/08; G; G06; G06K; G06K17/00; G06K17/0022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
A method for transmitting data to an electronic price label (EPL) comprising the steps of: storing a status flag representative of a first number of transmissions of a data message to the EPL in an EPL data file; reading the status flag from the EPL data file; transmitting the data message the first number of times; receiving a return signal from the EPL; determining a signal to noise (S/N) ratio from the return signal; determining whether the S/N ratio is below a range of S/N ratios that are associated with the status flag; providing a new status flag representative of a second number of data message transmissions and writing the new status flag in the EPL data file if the S/N ratio is below the range of S/N ratios; and transmitting a subsequent set of data messages the second number of times.
Claim 2
Independent Claim
142 words
A method for transmitting data to an electronic price label (EPL) comprising the steps of: storing a status flag representative of a first number of transmissions of a data message to the EPL in an EPL data file; reading the status flag from the EPL data file; transmitting the data message the first number of times; receiving a return signal from the EPL; determining a signal to noise (S/N) ratio from the return signal; determining whether the S/N ratio is below a range of S/N ratios that are associated with the status flag; providing a new status flag representative of a second number of data message transmissions and writing the new status flag in the EPL data file if the S/N ratio is below the range of S/N ratios; and transmitting a subsequent set of data messages the second number of times.
Claim 3
Independent Claim
103 words
A method for transmitting data to an electronic price label (EPL) comprising the steps of: transmitting a data message to the EPL a first number of times based upon an established signal to noise (S/N) ratio; receiving a return signal from the EPL; determining a new (S/N) ratio from the return signal; determining whether the new S/N ratio is below a range of S/N ratios that includes the established S/N ratio; and transmitting a subsequent data message to the EPL a second number of times based upon the new S/N ratio if the new S/N ratio is below the range of S/N ratios.
Claim 4
Independent Claim
103 words
A method for transmitting data to an electronic price label (EPL) comprising the steps of: transmitting a data message to the EPL a first number of times based upon an established signal to noise (S/N) ratio; receiving a return signal from the EPL; determining a new (S/N) ratio from the return signal; determining whether the new S/N ratio is below a range of S/N ratios that includes the established S/N ratio; and transmitting a subsequent data message to the EPL a second number of times based upon the new S/N ratio if the new S/N ratio is below the range of S/N ratios.
Claim 5
Dependent Claim
135 words
An electronic shelf label system comprising: a transmitter which transmits a data message to an EPL; a receiver which receives a return signal from the EPL; a storage system which stores a status flag representing a first number of times the data message is transmitted by the transmitter to the EPL, wherein the status flag is based upon an established signal to noise (S/N) ratio; means for determining a new S/N ratio from the return signal; and means for determining whether the new S/N ratio is below a range of S/N ratios that includes the established S/N ratio, and if it is, providing a new status flag representing a second number of transmission times greater than the first number of transmission times; wherein the transmitter transmits a subsequent data message the second number of times.
Claim 6
Dependent Claim
135 words
An electronic shelf label system comprising: a transmitter which transmits a data message to an EPL; a receiver which receives a return signal from the EPL; a storage system which stores a status flag representing a first number of times the data message is transmitted by the transmitter to the EPL, wherein the status flag is based upon an established signal to noise (S/N) ratio; means for determining a new S/N ratio from the return signal; and means for determining whether the new S/N ratio is below a range of S/N ratios that includes the established S/N ratio, and if it is, providing a new status flag representing a second number of transmission times greater than the first number of transmission times; wherein the transmitter transmits a subsequent data message the second number of times.
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) | 2000-12-01 | 2001-06-02 | 2001-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-01 | 2005-06-02 | 2005-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-01 | 2009-06-02 | 2009-12-02 | $7700.00 | Window Closed / Lapsed |