← Back to Patent Explorer
US3579869A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic answer confirmation system

Assignee: General Electric Co
•
Filing: 1969-09-02
•
Granted: 1971-05-25
•
Expires: 1989-09-02
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract An automatic answer confirmation system employable with a student response system is described wherein the problem and test designator numerals are logically combined to extract a single correct answer for the multiple choice question being answered. To effect this result, the problem and test designator numerals are encoded into the answer confirmation system as binary coded decimal digits and the digits are summed in two exclusive-OR stages to produce a composite digital number related to the problem being answered. The composite number then is entered into an answer select matrix for extraction of the correct answer for the problem and the correct answer is compared with the student selected choice to automatically determine the correctness of the student''s choice.

Inventors

  • 👤 Terry L Hewitt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 06:16
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 141 words
An automatic answer confirmation system comprising means for encoding the problem designator and test designator of a multiple choice test into said confirmation system as coded logic numbers having a plurality of binary digits, logic means for reducing the number of binary digits of said coded logic numbers to produce an answer select logic number corresponding to said problem designators, said logic means providing an equal probability for one of two conditions in each digit of said answer select logic number and producing an irregular sequence of answer select logic numbers for successive problem designators, matrix means for converting said answer select logic number to the correct answer corresponding to the problem identified by said designator and means for correlating said correct answer as determined from said matrix means with the choice selected for the problem identified by the encoded designator.
Claim 2
Dependent Claim 141 words
An automatic answer confirmation system comprising means for encoding the problem designator and test designator of a multiple choice test into said confirmation system as coded logic numbers having a plurality of binary digits, logic means for reducing the number of binary digits of said coded logic numbers to produce an answer select logic number corresponding to said problem designators, said logic means providing an equal probability for one of two conditions in each digit of said answer select logic number and producing an irregular sequence of answer select logic numbers for successive problem designators, matrix means for converting said answer select logic number to the correct answer corresponding to the problem identified by said designator and means for correlating said correct answer as determined from said matrix means with the choice selected for the problem identified by the encoded designator.
Claim 3
Dependent Claim 116 words
An automatic confirmation system comprising means for encoding at least two designator numbers into said confirmation system as binary coded numbers, means for logically combining said binary coded numbers to form a composite number having a reduced number of binary digits relative to the total number of digits of said binary coded designator numbers, said combining means providing an irregular answer sequence for successive designator numbers, logic means for converting said composite number to a single indicator corresponding to said designator digits, means for externally introducing information relative to said designator digits and means for comparing said introduced information with said single indicator determined from said designator digits for determining the correctness of said introduced information.
Claim 4
Dependent Claim 116 words
An automatic confirmation system comprising means for encoding at least two designator numbers into said confirmation system as binary coded numbers, means for logically combining said binary coded numbers to form a composite number having a reduced number of binary digits relative to the total number of digits of said binary coded designator numbers, said combining means providing an irregular answer sequence for successive designator numbers, logic means for converting said composite number to a single indicator corresponding to said designator digits, means for externally introducing information relative to said designator digits and means for comparing said introduced information with said single indicator determined from said designator digits for determining the correctness of said introduced information.
Claim 5
Dependent Claim 35 words
An automatic confirmation system according to claim 2 wherein said binary coded designator digits are combined in logic circuitry producing an equal probability for one of two conditions in each digit of said composite number.
Claim 6
Dependent Claim 26 words
An automatic confirmation system according to claim 3 further including means for reading out the irregular answer sequence from said confirmation system for successive designator numbers.
Claim 7
Dependent Claim 178 words
An automatic answer confirmation system for a multiple choice test comprising means for encoDing into said answer confirmation system designators corresponding to the problem and test being answered, means for converting each designator into binary numbers having a plurality of digits coded to produce an equal division between ones and zeros in each column of binary digits from zero to nine, means for mixing at least a portion of the binary number corresponding to the problem with at least a portion of said binary number corresponding to the test to produce a composite binary number, said mixing means producing an irregular sequence of composite binary numbers for consecutive problem numbers with each problem designator consistently producing a constant composite binary number for a given test designator, matrix means for decoding said composite number obtained from said problem and test designators to produce the correct answer for the problem being worked, means for introducing an operator selected choice into said system and means for comparing said correct answer as determined from said matrix means with said operator selected choice.
Claim 8
Dependent Claim 178 words
An automatic answer confirmation system for a multiple choice test comprising means for encoDing into said answer confirmation system designators corresponding to the problem and test being answered, means for converting each designator into binary numbers having a plurality of digits coded to produce an equal division between ones and zeros in each column of binary digits from zero to nine, means for mixing at least a portion of the binary number corresponding to the problem with at least a portion of said binary number corresponding to the test to produce a composite binary number, said mixing means producing an irregular sequence of composite binary numbers for consecutive problem numbers with each problem designator consistently producing a constant composite binary number for a given test designator, matrix means for decoding said composite number obtained from said problem and test designators to produce the correct answer for the problem being worked, means for introducing an operator selected choice into said system and means for comparing said correct answer as determined from said matrix means with said operator selected choice.
Claim 9
Dependent Claim 37 words
An automatic answer confirmation system according to claim 5 wherein said mixing means include means for logically combining said problem and said test designators in a logic circuit employing exclusive-OR gates to produce a composite binary number.
Claim 10
Dependent Claim 45 words
An automatic answer confirmation system according to claim 6 wherein the digits of said composite binary number from said logic circuit are summed in a second logic circuit employing exclusive-OR gates to reduce the number of binary digits corresponding to given problems and test designators.

References Cited (Backward Citations)

US3487561A Cited
US3500559A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-24 1974-11-23 1975-05-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-24 1978-11-23 1979-05-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-24 1982-11-23 1983-05-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag