Patent US3846622A successfully refreshed from Google Patents.
US3846622A
Expired / Lapsed
US
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Access control apparatus
Assignee: Mosler Safe Co
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Filing: 1972-09-29
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Granted: 1974-11-05
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Expires: 1992-09-29
Abstract
Abstract An access control system is described for permitting authorized persons to enter restricted areas. Each authorized person is issued a card with a multi-bit number coded thereon in machine readable form. At the time he is issued the card, the authorized person is also given a number to be memorized. When the authorized person seeks to enter a restricted area, he places his card into the access control system which reads the machine readable number from the card and transforms the card number by a transformation means into a transformed number. The transformed number is formed in two parts, the first part being formed by interacting some card number bits with selected, but fixed, machine-generated bits. The second part of the transformed number is formed by interacting the remainder of the card number bits with a first part of the transformed number which was obtained by interacting card number bits and fixed bits. The two parts of the transformed number are then compared with the memorized number which is entered into a system keyboard by the person seeking to enter the restricted area. If a favorable comparison occurs between the entered memorized number, a signal is produced to permit the person to enter.
Inventors
- 👤 M Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:23
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G07F7/10; G07F7/1025; G07F7/1058; G07F7/1066
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
186 words
An apparatus for verifying that an authorized person is seeking entrance into a restricted area, the apparatus comprising in combination: means for reading a multi-bit card number from a card presented by the person seeking entrance to the restricted area; means for generating a multi-bit fixed number; first number transforming means responsive to said fixed number and only part of said multi-bit read card number to form a multi-bit first part of a transformed number, said first part being logically related to the inputs to said first number transforming means; second number transforming means responsive to the remaining part of said read card number and also responsive to said first part of said transformed number to form a multi-bit second part of a transformed number, said second part being logically related to the inputs to said second number transforming means; and a comparing means for comparing said first and second parts of a transformed number with a memorized number entered by the person seeking entrance into the restricted area, a favorable comparison of these numbers being operative to permit the person to enter the restricted area.
Claim 2
Independent Claim
186 words
An apparatus for verifying that an authorized person is seeking entrance into a restricted area, the apparatus comprising in combination: means for reading a multi-bit card number from a card presented by the person seeking entrance to the restricted area; means for generating a multi-bit fixed number; first number transforming means responsive to said fixed number and only part of said multi-bit read card number to form a multi-bit first part of a transformed number, said first part being logically related to the inputs to said first number transforming means; second number transforming means responsive to the remaining part of said read card number and also responsive to said first part of said transformed number to form a multi-bit second part of a transformed number, said second part being logically related to the inputs to said second number transforming means; and a comparing means for comparing said first and second parts of a transformed number with a memorized number entered by the person seeking entrance into the restricted area, a favorable comparison of these numbers being operative to permit the person to enter the restricted area.
Claim 3
Dependent Claim
56 words
The apparatus in claim 1 wherein said second number transforming means includes third number transforming means responsive to said second part of a transformed number and also responsive to additional card number bits to form additional transformed number bits, said additional transformed number bits being logically related to the inputs to said third number transforming means.
Claim 4
Dependent Claim
33 words
The apparatus in claim 2 wherein additionally including internal feedback means to control which transformed number bits in said second part of a transformed number are input to said third number transforming means.
Claim 5
Independent Claim
398 words
An apparatus for verifying that an authorized person is seeking entrance into a restricted area by presenting a card with a card number thereon and inserting a memorized number, the apparatus comprising in combination: means for reading the card number from the card and producing multiple binary signals representing the read card number; first means for storing said multiple binary signals; means for generating a fixed multi-bit number, said fixed number bits being completely independent of said card number; a first data transforming means responsive to said fixed number and to part, but not all, of said binary signals in said first storage means, said first transforming means producing at its output a first multi-bit group of transformed number bits, said first multi-bit group being lOgically related to the data input to said first data transforming means; a second data transforming means responsive to said first multi-bit group of said transformed number bits and also responsive to the remainder of said binary signals in said first storage means, said second data transforming means producing at its output a second multi-bit group of said transformed number bits, said second multi-bit group being logically related to the data input to said second data transforming means, said second transforming means including: means to generate a first sub-group of said second group of transformed number bits by transforming said first group of transformed number bits with part, but not all, of said remaining bits stored in said first storing means, said first sub-group of transformed number bits being logically related to the data input to said first sub-group generating means, and means to generate a second sub-group of said second group of transformed number bits by transforming said first sub-group with the remaining binary signals stored in said first storing means, said second sub-group of said second group of transformed number bits being logically related to the data input to said second sub-group generating means, said first sub-group and said second sub-group forming said second group of transformed number bits; second storage means for storing the memorized number entered by the person seeking entrance to the restricted area; and comparing means responsive to said memorized number stored in said second storage means and said first and said second groups of transformed number bits for comparing these two numbers, a favorable comparison being operative to permit the person to enter the restricted area.
Claim 6
Independent Claim
398 words
An apparatus for verifying that an authorized person is seeking entrance into a restricted area by presenting a card with a card number thereon and inserting a memorized number, the apparatus comprising in combination: means for reading the card number from the card and producing multiple binary signals representing the read card number; first means for storing said multiple binary signals; means for generating a fixed multi-bit number, said fixed number bits being completely independent of said card number; a first data transforming means responsive to said fixed number and to part, but not all, of said binary signals in said first storage means, said first transforming means producing at its output a first multi-bit group of transformed number bits, said first multi-bit group being lOgically related to the data input to said first data transforming means; a second data transforming means responsive to said first multi-bit group of said transformed number bits and also responsive to the remainder of said binary signals in said first storage means, said second data transforming means producing at its output a second multi-bit group of said transformed number bits, said second multi-bit group being logically related to the data input to said second data transforming means, said second transforming means including: means to generate a first sub-group of said second group of transformed number bits by transforming said first group of transformed number bits with part, but not all, of said remaining bits stored in said first storing means, said first sub-group of transformed number bits being logically related to the data input to said first sub-group generating means, and means to generate a second sub-group of said second group of transformed number bits by transforming said first sub-group with the remaining binary signals stored in said first storing means, said second sub-group of said second group of transformed number bits being logically related to the data input to said second sub-group generating means, said first sub-group and said second sub-group forming said second group of transformed number bits; second storage means for storing the memorized number entered by the person seeking entrance to the restricted area; and comparing means responsive to said memorized number stored in said second storage means and said first and said second groups of transformed number bits for comparing these two numbers, a favorable comparison being operative to permit the person to enter the restricted area.
Claim 7
Dependent Claim
76 words
The apparatus in claim 4 additionally comprising selective steering means for selectively steering, as a function of the bits stored in selected bit positions in said first storage means, one of two transformed number bits from either said first or second group of transformed number bits to further transforming means for transforming said steered bit with a card number bit stored in said first storage means to form a transformed number bit of said second sub-group.
Claim 8
Dependent Claim
281 words
Apparatus for verifying that an authorized person is seeking to enter a restricted area by presenting a card with a card number thereon and inserting a memorized number, the apparatus comprising in combination: means for reading the card number from the card and producing multiple binary signals representing the read card number; first means for storing said binary singals; means for generating a fixed multi-bit number, said fixed number bits being completely independent of said card number; a first set of EXCLUSIVE-OR circuits, each said circuit having two inputs and one output, one input of each said first set EXCLUSIVE-OR circuits being electrically connected to one bit position in said first storage means, the other input of each said first set EXCLUSIVE-OR circuit being electrically connected to one fixed data bit from said generating means, said first set EXCLUSIVE-OR circuits producing bits at their individual outputs which form a first portion of a transformed number; a second set of EXCLUSIVE-OR circuits each having two inputs and one output, one input to each said second set EXCLUSIVE-OR circuit being electrically connected to one bit position in said first storage means, the other input to each said second set EXCLUSIVE-OR circuit being electrically connected to one bit position of said first portion of said transformed number, said second set EXCLUSIVE-OR circuits producing a bit at each individual output all of which form a second portion of a transformed number; second means for storing said inserted memorized; comparing means responsive to said second storage means and said first and second portion of said transformed number for comparing these two numbers, a favorable comparison being operative to permit tHe person to enter the restricted area.
Claim 9
Dependent Claim
281 words
Apparatus for verifying that an authorized person is seeking to enter a restricted area by presenting a card with a card number thereon and inserting a memorized number, the apparatus comprising in combination: means for reading the card number from the card and producing multiple binary signals representing the read card number; first means for storing said binary singals; means for generating a fixed multi-bit number, said fixed number bits being completely independent of said card number; a first set of EXCLUSIVE-OR circuits, each said circuit having two inputs and one output, one input of each said first set EXCLUSIVE-OR circuits being electrically connected to one bit position in said first storage means, the other input of each said first set EXCLUSIVE-OR circuit being electrically connected to one fixed data bit from said generating means, said first set EXCLUSIVE-OR circuits producing bits at their individual outputs which form a first portion of a transformed number; a second set of EXCLUSIVE-OR circuits each having two inputs and one output, one input to each said second set EXCLUSIVE-OR circuit being electrically connected to one bit position in said first storage means, the other input to each said second set EXCLUSIVE-OR circuit being electrically connected to one bit position of said first portion of said transformed number, said second set EXCLUSIVE-OR circuits producing a bit at each individual output all of which form a second portion of a transformed number; second means for storing said inserted memorized; comparing means responsive to said second storage means and said first and second portion of said transformed number for comparing these two numbers, a favorable comparison being operative to permit tHe person to enter the restricted area.
Claim 10
Dependent Claim
195 words
A verification method for determining whether a person is authorized to enter a restricted area, the method comprising the steps of: a. reading a multi-bit card number from a card carried by the person seeking to enter the restricted area; b. storing a memorized multi-bit number entered by the person seeking to enter the restricted area; c. generating a multi-bit fixed number independent of the card number; d. forming a first group of transformed number bits by transforming said fixed number with part, but not all, bits of said card number, said first group of transformed number bits being logically related to the fixed number and card number bits transformed; e. forming a second group of transformed number bits by transforming the remaining bits of the card number with said first group of transformed number bits, said second group of transformed number bits being logically related to said first group of transformed number bits and said remaining bits, said first and second groups of transformed number bits forming a multi-bit transformed number; and f. comparing the transformed number with the stored memorized number, a favorable comparison being operative to permit entry to the restricted area.
Claim 11
Dependent Claim
195 words
A verification method for determining whether a person is authorized to enter a restricted area, the method comprising the steps of: a. reading a multi-bit card number from a card carried by the person seeking to enter the restricted area; b. storing a memorized multi-bit number entered by the person seeking to enter the restricted area; c. generating a multi-bit fixed number independent of the card number; d. forming a first group of transformed number bits by transforming said fixed number with part, but not all, bits of said card number, said first group of transformed number bits being logically related to the fixed number and card number bits transformed; e. forming a second group of transformed number bits by transforming the remaining bits of the card number with said first group of transformed number bits, said second group of transformed number bits being logically related to said first group of transformed number bits and said remaining bits, said first and second groups of transformed number bits forming a multi-bit transformed number; and f. comparing the transformed number with the stored memorized number, a favorable comparison being operative to permit entry to the restricted area.
Claim 12
Dependent Claim
134 words
The verification method in claim 7 wherein Step (e) includes the steps of a. forming a first sub-group of transformed number bits by transforming some, but not all, of the remaining bits of the card number with the first group of transformed number bits, said first sub-group of transformed number bits being logically related to the remaining bits and the first group of transformed number bits which are transformed to form said first sub-group; and b. forming a second sub-group of transformed number bits by transforming the remaining bits of the card number with the first sub-group of transformed number bits, said second sub-group being logically related to the remaining bits and the first sub-group transformed to form said second sub-group, said first and second sub-groups forming the second group of transformed number bits.
Claim 13
Dependent Claim
61 words
The verification method in claim 8 wherein Step (a) includes selecting, as a function of card number bits, which bit in the first group of transformed number bits is transformed with which card number bit and wherein Step (b) includes selecting, as a function of card number bits, which bit in the first sub-group is transformed with which card number bit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |