US5837983A
Expired / Lapsed
US
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Readability monitoring system for optical codes
Assignee: PSC Inc USA
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Filing: 1996-06-10
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Granted: 1998-11-17
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Expires: 2016-06-10
Abstract
Abstract An apparatus and method for monitoring and reporting optical symbol readability and operator and reader performance levels. The apparatus includes a reader for optical symbols which measures and reports the values of measurements with respect to the symbol and events occurring during the reading process indicative of the label readability. The apparatus further comprises data accumulation device including a memory storage to accumulate these measurement values for each set of labels, and a programmed computing system to analyze the measured values and report on the results of the analysis. A preferred method of monitoring and reporting optical symbol readability and operator and reader performance levels includes the steps of reading or attempting to read an optical symbol, performing measurements within the symbol and noting events during the reading process, accumulating these values, analyzing the accumulated data, and producing a report which lists the sets of labels which had readability problems. The method also includes the optional step of listing the reading devices and reader operators which had more problems in reading symbols than expected.
Inventors
- 👤 Robert J. Actis
- 👤 Craig D. Cherry
- 👤 Alan C. Bradley
- 👤 Donald D. Dieball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:49
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/14
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
102 words
Apparatus for monitoring readability of symbols, comprising: an optical code reader comprising an optical data collector; a decoder connected to said optical data collector; a memory: a readability measurement block connected to at least one of said optical data collector and said decoder, whereby information relating to an attempt to read an optical code is recorded in said memory; and a measurement data accumulator connected to said optical code reader, said measurement data accumulator receiving said information from said optical code reader and generating statistical information based on attempts by said optical code reader to read a plurality of different optical codes.
Claim 2
Dependent Claim
102 words
Apparatus for monitoring readability of symbols, comprising: an optical code reader comprising an optical data collector; a decoder connected to said optical data collector; a memory: a readability measurement block connected to at least one of said optical data collector and said decoder, whereby information relating to an attempt to read an optical code is recorded in said memory; and a measurement data accumulator connected to said optical code reader, said measurement data accumulator receiving said information from said optical code reader and generating statistical information based on attempts by said optical code reader to read a plurality of different optical codes.
Claim 3
Dependent Claim
92 words
The apparatus of claim 1 wherein said information received by said measurement data accumulator from said optical code reader comprises one or more of a measurement of number of reads needed before enough acceptable data was acquired to read an optical code, a measurement of a number of times that an apparent content of read data varied from a data value accepted as a good read, a measurement of time needed to read said optical code, and a measurement of a number of symbol fragments read before successfully reading said optical code.
Claim 4
Dependent Claim
16 words
The apparatus of claim 1 further comprising a report generator integral with said measurement data accumulator.
Claim 5
Dependent Claim
24 words
The apparatus of claim 1 wherein said readability measurements comprise dimensional measurements of elements of an optical code read by said optical code reader.
Claim 6
Dependent Claim
38 words
The apparatus of claim 4 wherein said readability measurements further comprise one or more of dimensional measurements of guard band elements of said optical code, center band elements of said optical code, and margins of said optical code.
Claim 7
Independent Claim
81 words
A system for monitoring symbol readability, comprising: a plurality of optical readers, each of said optical readers comprising a decoder and means for obtaining readability measurements when an attempt to read a symbol is made; and a data accumulator, wherein said data accumulator is connected to all of said of optical readers, said data accumulator comprising a memory for storing readability measurements obtained by said optical readers automatically for each attempt to read a symbol, and for aggregating said readability measurements.
Claim 8
Independent Claim
81 words
A system for monitoring symbol readability, comprising: a plurality of optical readers, each of said optical readers comprising a decoder and means for obtaining readability measurements when an attempt to read a symbol is made; and a data accumulator, wherein said data accumulator is connected to all of said of optical readers, said data accumulator comprising a memory for storing readability measurements obtained by said optical readers automatically for each attempt to read a symbol, and for aggregating said readability measurements.
Claim 9
Dependent Claim
54 words
The system of claim 6 wherein said data accumulator comprises a plurality of summary records stored in said memory, one summary record for each of a plurality of symbol types, the summary record for a particular symbol type being updated when said data accumulator receives readability measurements from any of said of optical readers.
Claim 10
Dependent Claim
39 words
The system of claim 7 wherein each of said symbol types corresponds to unique one of a plurality of symbol values said symbol values being used by said data accumulator to distinguish said summary records for different symbol types.
Claim 11
Dependent Claim
27 words
The system of claim 8 wherein each of said symbol types further corresponds to either a particular optical reader or a particular operator of said optical readers.
Claim 12
Dependent Claim
52 words
The system of claim 6 wherein said data accumulator comprises a plurality of data records stored in said memory for each of a plurality of symbol types, a data record for a particular symbol type being created each time said data accumulator receives readability measurements from any of said of optical readers.
Claim 13
Dependent Claim
20 words
The system of claim 10 wherein each of said symbol types corresponds to one of a plurality of symbol values.
Claim 14
Dependent Claim
27 words
The system of claim 11 wherein each of said symbol types further corresponds to either a particular optical reader or a particular operator of said optical readers.
Claim 15
Dependent Claim
64 words
The system of claim 6 wherein said readability measurements comprise at least one of (i) a number of scans needed to read a symbol, (ii) a number of times that the content of the data read varied from the read symbol, (iii) a length of time needed to read the symbol, and (iv) a number of symbol fragments read before successfully reading the symbol.
Claim 16
Dependent Claim
44 words
The system of claim 6 wherein said readability measurements comprise at least one of (i) measurements regarding internal label quality of a read symbol, (ii) measurements regarding optical characteristics of the read symbol, and (iii) a number of errors corrected in reading the symbol.
Claim 17
Dependent Claim
31 words
The system of claim 6 wherein said readability measurements comprise dimensional measurements of one or more of guard band elements, center band elements, and data character elements of a read symbol.
Claim 18
Dependent Claim
35 words
The system of claim 15 wherein said readability measurements comprise an indication of whether or not margins of a read symbol are in compliance with a standard used to evaluate the read symbol for decodability.
Claim 19
Dependent Claim
16 words
The system of claim 6 wherein said data accumulator is located remote from said optical readers.
Claim 20
Independent Claim
101 words
A method for automated monitoring of symbol readability, said method comprising the steps of: (a) attempting to read an unknown symbol with an optical reader, said symbol being categorized as at least one of a plurality of symbol types; (b) generating readability data during the attempt to read the symbol; (c) determining whether the symbol was successfully read; (d) transferring the readability data from the optical reader to a remotely located data accumulator; (e) repeating steps (a) through (d) for a plurality of unknown symbols; and (f) aggregating for each of said symbol types the readability data at the remote accumulator.
Claim 21
Independent Claim
101 words
A method for automated monitoring of symbol readability, said method comprising the steps of: (a) attempting to read an unknown symbol with an optical reader, said symbol being categorized as at least one of a plurality of symbol types; (b) generating readability data during the attempt to read the symbol; (c) determining whether the symbol was successfully read; (d) transferring the readability data from the optical reader to a remotely located data accumulator; (e) repeating steps (a) through (d) for a plurality of unknown symbols; and (f) aggregating for each of said symbol types the readability data at the remote accumulator.
Claim 22
Dependent Claim
46 words
The method of claim 18 further comprising the step of determining an indication of symbol readability for at least one symbol type based on an aggregation of readability data for that symbol type resulting from said step of aggregating the readability data at the remote accumulator.
Claim 23
Dependent Claim
20 words
The method of claim 18 wherein each of said symbol types corresponds to one of a plurality of symbol values.
Claim 24
Dependent Claim
27 words
The method of claim 20 wherein each of said symbol types further corresponds to either a particular optical reader or a particular operator of said optical readers.
Claim 25
Dependent Claim
73 words
The method of claim 18 wherein said step of generating readability data comprises the step of measuring and storing at least one of (i) a number of scans needed to read a symbol, (ii) a number of times that the content of the data read varied from the read symbol, (iii) a length of time needed to read the symbol, and (iv) a number of symbol fragments read before successfully reading the symbol.
Claim 26
Dependent Claim
53 words
The method of claim 18 wherein said step of generating readability data comprises the step of measuring and storing at least one of (i) measurements regarding internal label quality of the read symbol, (ii) measurements regarding optical characteristics of the read symbol, and (iii) a number of errors corrected in reading the symbol.
Claim 27
Dependent Claim
60 words
The method of claim 18 wherein said step of aggregating the readability data at the remote accumulator for each of said plurality of symbol types comprises the steps of retrieving a summary record associated with a particular symbol type and updating the summary record to reflect the most recent readability data transferred from the optical reader to the data accumulator.
Claim 28
Dependent Claim
96 words
The method of claim 18 further comprising the step of generating a data record when said readability data is transferred by the optical reader to the remote data accumulator, wherein said step of aggregating the readability data at the remote accumulator for each of said plurality of symbol types comprises the steps of sorting a plurality of data records to arrive at a set of data records associated with a particular symbol type, and combining information stored in said set of data records to arrive at a summary of readability data for the particular symbol type.
Claim 29
Dependent Claim
41 words
The method of claim 18 wherein said step of aggregating the readability data at the remote accumulator for each of said plurality of symbol types comprises the step of aggregating readability data separately for successful symbol reads and unsuccessful symbol reads.
Claim 30
Dependent Claim
40 words
The method of claim 18 further comprising the step of identifying readability problems associated with said optical reader based on an assessment of the readability data aggregated at said remote data accumulator, said readability data including an optical reader identifier.
Claim 31
Dependent Claim
45 words
The method of claim 18 further comprising the step of identifying readability problems associated with a particular operator of said optical reader based on an assessment of the readability data aggregated at said remote data accumulator, said readability data including an optical reader operator identifier.
References Cited (Backward Citations)
US4879456A
Cited
US4939355A
Cited
USRE35117E
Cited
US5144118A
Cited
US5504315A
Cited
US5334825A
Cited
US5493108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-16 | 2002-05-18 | 2002-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-16 | 2006-05-18 | 2006-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-16 | 2010-05-18 | 2010-11-17 | $7700.00 | Window Closed / Lapsed |