Patent US4766433A successfully refreshed from Google Patents.
US4766433A
Expired / Lapsed
US
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Optical card-key data connector
Assignee: CODECARD Inc 2902 REDHILL SUITE 160 COSTA MESA CA 92626 A CORP OF NV
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Filing: 1984-07-06
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Granted: 1988-08-23
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Expires: 2004-07-06
Abstract
Abstract A card-key device with an embedded microprocessor is able to communicate with a computer-based security system via an optical connection. The optical connection is made by linking a light-emitting diode with a phototransistor through a "light tunnel" created by a mechanical connection. Electromagnetic sensors and grippers are used to assure each side of the connection that a valid connection has been made, as well as to supply power to the card-key on-board microprocessor. The card-key's on-board microprocessor can be used to retrieve an identifying number, to store data for the security system, or to perform other data transformation functions for the security system.
Inventors
- 👤 Robert W. Herman
- 👤 Rex K. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:32
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/1097; H; H04; H04M; H04M1/00; H04M1/66; H04M1/667; H04M1/67; H04M1/675; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7068; Y10T70/7073
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
In a card-key/card receptacle system, an electrical-magnetic latch and connector, comprising first connective means for completing an electrical connection attached to the card key; second connective means for completing an electrical connection attached to the card receptacle; magnetic means for attracting the first connective means to the second connective means, whereby sliding the first connective means nearby to the second connective means causes an electrical connection to be maintained by an attractive force; and spring means for maintaining said first and second connective means in substantial mechanical alignment, whereby said electrical connection is not broken by small lateral forces.
Claim 2
Dependent Claim
99 words
In a card-key/card receptacle system, an electrical-magnetic latch and connector, comprising first connective means for completing an electrical connection attached to the card key; second connective means for completing an electrical connection attached to the card receptacle; magnetic means for attracting the first connective means to the second connective means, whereby sliding the first connective means nearby to the second connective means causes an electrical connection to be maintained by an attractive force; and spring means for maintaining said first and second connective means in substantial mechanical alignment, whereby said electrical connection is not broken by small lateral forces.
Claim 3
Dependent Claim
181 words
In a card-key system, an optical-magnetic latch and data connection, comprising optical emitter means for emitting a light pulse; optical receiver means for sensing the light pulse; wherein said optical emitter means and said optical receiver means are movable with respect to each other and orthogonal to said light path; light tunnel means for transmitting the light pulse from the emitter means to the receiver means, whereby no light path is formed until the emitter means and the receiver means are optically aligned to substantially within a predetermined tolerance; first connective means for completing an electrical connection, seated on the same housing as the emitter means; second connective means for completing an electrical connection, seated on the same housing as the receiver means; magnetic means for attracting the first connective means to the second connective means, whereby sliding the emitter means nearby to the receiver means causes an electrical connection to be made and maintained substantially before any optical connection is formed; and spring means for mechanically maintaining said optical emitter means and said optical receiver means in substantial optical alignment.
Claim 4
Dependent Claim
181 words
In a card-key system, an optical-magnetic latch and data connection, comprising optical emitter means for emitting a light pulse; optical receiver means for sensing the light pulse; wherein said optical emitter means and said optical receiver means are movable with respect to each other and orthogonal to said light path; light tunnel means for transmitting the light pulse from the emitter means to the receiver means, whereby no light path is formed until the emitter means and the receiver means are optically aligned to substantially within a predetermined tolerance; first connective means for completing an electrical connection, seated on the same housing as the emitter means; second connective means for completing an electrical connection, seated on the same housing as the receiver means; magnetic means for attracting the first connective means to the second connective means, whereby sliding the emitter means nearby to the receiver means causes an electrical connection to be made and maintained substantially before any optical connection is formed; and spring means for mechanically maintaining said optical emitter means and said optical receiver means in substantial optical alignment.
Claim 5
Dependent Claim
288 words
In a card-key system, an optical-magnetic latch and data connection, comprising optical emitter means for emitting a light pulse; optical receiver means for sensing the light pulse; wherein said optical emitter means and said optical receiver means are movable with respect to each other and orthogonal to said light path; light tunnel means for transmitting the light pulse from the emitter means to the receiver means, whereby no light path is formed until the emitter means and the receiver means are optically aligned to substantially within a predetermined tolerance; first connective means for completing an electrical connection, seated on the same housing as the emitter means; second connective means for completing an electrical connection, seated on the same housing as the receiver means; magnetic means for attracting the first connective means to the second connective means, whereby sliding the emitter means nearby to the receiver means causes an electrical connection to be made and maintained substantially before any optical connection is formed; having at least one card-key and at least one card receptacle, and further comprising data communication means capable of data transfer in both directions between and said card-key and of said card receptacle, wherein each said card-key comprises at least one said optical emitter means, and wherein each said card receptacle comprises at least one said optical emitter means, and further comprising spring means for maintaining said first and second connective means in substantial mechanical alignment, whereby said electrical connection is not broken by small lateral forces, and for mechanically maintaining said optical emitter means and said optical receiver means in substantial optical alignment, wherein said attractive force by said magnetic means maintains said optical emitter means and said optical receiver means in substantial optical alignment.
Claim 6
Dependent Claim
288 words
In a card-key system, an optical-magnetic latch and data connection, comprising optical emitter means for emitting a light pulse; optical receiver means for sensing the light pulse; wherein said optical emitter means and said optical receiver means are movable with respect to each other and orthogonal to said light path; light tunnel means for transmitting the light pulse from the emitter means to the receiver means, whereby no light path is formed until the emitter means and the receiver means are optically aligned to substantially within a predetermined tolerance; first connective means for completing an electrical connection, seated on the same housing as the emitter means; second connective means for completing an electrical connection, seated on the same housing as the receiver means; magnetic means for attracting the first connective means to the second connective means, whereby sliding the emitter means nearby to the receiver means causes an electrical connection to be made and maintained substantially before any optical connection is formed; having at least one card-key and at least one card receptacle, and further comprising data communication means capable of data transfer in both directions between and said card-key and of said card receptacle, wherein each said card-key comprises at least one said optical emitter means, and wherein each said card receptacle comprises at least one said optical emitter means, and further comprising spring means for maintaining said first and second connective means in substantial mechanical alignment, whereby said electrical connection is not broken by small lateral forces, and for mechanically maintaining said optical emitter means and said optical receiver means in substantial optical alignment, wherein said attractive force by said magnetic means maintains said optical emitter means and said optical receiver means in substantial optical alignment.
References Cited (Backward Citations)
US2170287A
Cited
US3683239A
Cited
DE2213533A1
Cited
US3786391A
Cited
US3810258A
Cited
US3808577A
Cited
US4211456A
Cited
US4250533A
Cited
US4288780A
Cited
WO1983000976A1
Cited
US4500881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |