JPH01502140A - Computerized data retention card and read/write device for the card - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Computerized data retention card and read/write equipment for the card Place Background of the invention Field of the invention The invention typically includes a microcomputer to store and process data. An external device with embedded circuitry for accessing and modifying stored data Concerning identification cards, credit cards, and the like that interact with. Than In particular, the present invention provides improvements for data transfer between these cards and devices. 2. Methods and means used.

Conventional technology Advances in technology for the miniaturization of electrical circuits, especially cheap and sophisticated microprocessors The advent of semiconductor chips has created a strong interest in the development of so-called "smart cards". did. These small, computerized, laminated plastic devices store large amounts of information. information contained within the card's memory. In response to this, in some cases changes, deletions, or additions have been made to the “Reading” section. U.S. Pat. No. 4.384.288; 4.582.985 and 4.605.844 are these cards and terminal devices. Typical examples are shown and discussed.

These cards have potential for countless applications. as an identification card These cards contain historical data about their owners, as well as employment, medical, dental, and Maintain other information such as benefit eligibility records. For use with specially designed locks When used, the card can be used as a duplicate key or as an actuator for a powered device. It will be helpful. When used with remotely linked field terminal equipment, the cover The card verifies and changes the information contained on the card each time the card is used. and for use in banking, commerce and various other commercial transactions that need to be updated. Helpful.

Traditionally, communication between a read/write device and a computerized data retention card is Communication was accomplished by direct electrical contact, electromagnetic coupling, or radio frequency transmission.

Although these methods are generally satisfactory, they all suffer from some inherent deficiencies. have.

The main purpose of the present invention is to carry out data exchange between a read/write terminal device and a card. These deficiencies can be avoided by providing improved methods and means for That is.

A particular object of the present invention is to provide an improved system that does not require external electrical connections or internal batteries. To provide an interactive computerized data retention card.

Another purpose is to transfer information to and from the card using electromagnetic coupling or high frequency transmission. control performed by light pulses generated and received by a photoelectric converter, without relying on A computerized data holding card and a reading/writing device for the card. It is to provide.

Other objects and advantages may be found in the following summary of the invention and detailed description of the preferred embodiments; It will be clear from the characteristics and operation of

Summary of the invention In a preferred form of the invention, the invention is a standard paper case sized plastic bag. This card receives and processes intelligence between superimposed layers. , and a computer or microprocessor for storage. It houses the Tate circuit.

A separate read/write device reads the card with digital codes by means of pulses of light. communicate with. Data from the card is transmitted through a light-emitting diode ( LED) and received by a photodetector in the read/write device. Ru. Information stored in the card's programmable and erasable memory or previously Digitized data containing information used to modify stored information is integrated into the card's circuitry by a light emitting diode in the read/write device. is transmitted to a photodetector located in the photodetector.

The clock in the card circuit serves as a reference signal and is controlled by the clock LED in the card. processing the data signal when it is transmitted to a second photodetector in the read/write device. control to ensure that

To power the microcomputer, a multi-turn coil of wire is placed inside the card layer. embedded. High frequency supplied by power transformer in read/write device An electromagnetic field induces a voltage in this coil, this voltage is rectified, stabilized, and Used to drive the card's circuitry.

Drawing description Figure 1 shows the various electrical and electronic elements and components embedded within a credit card. FIG. is a schematic diagram of the circuit included in Figure 3 shows how to access data from the card in Figure 1 or create new data in the card. High-level block diagram of a card reader/writer that can be used to convey data It is.

Detailed description of the invention The data retention card of the present invention is designated by the number 10 in FIG. There is a microcontroller inside the card. A computer 12 is embedded. The microcomputer uses light emitting diodes (L ED) 14.

A second LED 16 is also connected to the microcomputer 12.

The output data signal from the microcomputer 12 is corresponded by the LED 14. The associated clock signal from the microcomputer 12 is converted into an optical signal and the associated clock signal from the microcomputer 12 is It is converted into a corresponding optical clock signal by ED16. microcomputer A phototransistor 18 connected to 12 responds to the incoming optical signal. A data signal is transmitted to the microcomputer 12.

A multi-turn power receiving winding 20 is embedded in the card and uses a high frequency electromagnetic field. An alternating current voltage is induced across the winding 20.

Winding 20 is connected to a diode bridge rectifier 22 for proper DC energization. power is supplied to the microcomputer 12.

The various components of FIG. 1 are shown in the detailed circuit diagram of FIG. As shown in Figure 2, constant voltage A diode 26 is connected across the filter capacitor 24 and serves as a voltage stabilizer. and it works.

The microcomputer 12 may be a commercially available Hitachi model Hlo 65901. No. As shown in FIG. 2, the microcomputer 12 includes a central processing unit (CPU). 12A, random access memory (RAM) 12B, appropriate input/output circuitry (I lo) 12G, read-only memory IJ (ROM) 12D, and electrically changeable It also includes a programmable memory U (EEPROM) 12E. These ingredients are , a data bus 12F, and an address bus 12G. General As usual, the program is stored in ROM12D, and the data is stored in RA. It is stored in M12B and/or EP and PRRAM12B.

Phototransistor 18 is connected to the appropriate bin 1 of microcomputer 12. input data in response to an optical data signal directed to phototransistor 18. The data signal is supplied to the microcomputer 12. LED14 is a microcomputer output data signal from the microcomputer 12. in response to generating a corresponding optical data signal. LED16 is a microcomputer It is connected to bin 3 of the microcomputer 12 and responds to the clock signal from the microcomputer 12. In response, a corresponding optical clock signal is generated.

t73F, including the power receiving winding 20 and the diode bridge rectifier 22, It is connected to bin 4 and bin 5 of microcomputer 12. Bin 4 is +Vc c, the bin 5 is grounded.

The card reading/writing device is shown in block diagram form in FIG. This device is , including internal processing electronics shown as block 50. Phototransistor 5 2 is connected to the processing circuit 50 to provide an input data signal to the processing circuit, and a second 71)) Transistor 54 is responsive to an optical clock signal incident on it. and supplies a clock signal to the processing circuit. The data signal from the processing circuit 50 is an LED 56 and is converted into a corresponding optical data signal.

The processing circuit 50 is supplied with power from a DC power supply 58 . Power supply 58 is a power oscillation and drive circuit 60 and the circuit 60 is connected to the winding wound on the ferrite core 64. 62. The circuit 60 outputs a frequency of, for example, 10 kHz to the winding 62. supply the force signal.

The processing circuit 50 is connected to a suitable display device so that the credit card shown in FIG. The information read from the code can be translated and displayed. Further, the processing circuit 50 It may also be connected to an appropriate terminal device to process the data and supply it to the card in Figure 1. can. Additionally, processing circuit 50 may be connected to a telephone line through a suitable modem. This allows you to use a remote computer to send data to the card and It is possible to receive data from the card.

The card 10 of FIG. 1 and the read/write device of FIG. When inserted into the writing device, the power receiving winding 20 is located within the gap between the ferrite core 64. and a phototransistor 52 is positioned above the LED 16 of the card, and the LED 56 is positioned over the phototransistor 18 of the card. Arranged.

When processing data held by the card 10, the card 10 is used as a read/write device. When inserted into the card 10, the microcomputer 12 in the card 10 becomes a read/write device. It receives power from a power oscillator and drive circuit 60 of. From microcomputer 12 The output data of is read/written by phototransistors 52 and 54. Detected. , new data is sent from the processing circuit 50 to the card's master via the LED 56. It can be supplied into the microcomputer 12.

The present invention provides a simple and inexpensive data retention card and read/write device. . Since the card does not have any external electrical contacts or an internal battery, This card does not need to be any larger than your current regular credit card, and therefore Conveniently portable. Due to the small size of the read/write device, the card Processing can be done at the location or from a remote terminal.

Although preferred embodiments having some special features have been described above, the present invention is not limited to this example and these features. These are just examples It is nothing more than that. Without departing from the scope of the following claims, the present invention is as described below. Any and all modifications to the embodiments selected for this purpose are included.

Month, day, 1989 Yoshi, Commissioner of the Patent Office 1) Takeshi Moon 1. Indication of case PCT/US 871004663, person making amendment Relationship to the case: Applicant Name: Florrick Ronald Dabriny 5, date of amendment order: 4/1999 April 4th (no change in content) international search report

Claims (14)

[Claims] 1. Computerized data retention card for use with read/write devices And: A thin case that houses the microcomputer means and can be inserted into the read/write device. board-shaped member; Mounted on a card-like member and connected to microcomputer means for reading The electrical input signal is input to the microcomputer in response to the optical signal from the writing/writing device. optical-to-electrical converter means for transmitting to the stage; mounted on a card-like member and connected to microcomputer means; A reading/writing device converts the electrical output signal from the computer means into an optical signal. A data-bearing card comprising electrical-to-optical converter means for transmitting data to a location. 2. Electrical-to-optical converter means: converting electrical data signals from microcomputer means into corresponding optical data signals; converter; and converting electrical clock signals from microcomputer means into corresponding optical clock signals; converter to convert The data retention card according to claim 1, comprising: 3. The opto-to-electrical converter means comprises at least one phototransistor. Data retention card listed in scope 1. 4. Claims wherein the electrical-to-optical converter means comprises at least one light emitting diode Data retention card described in 1. 5. Embedded within the card-like member, the microprocessor means responds to an external magnetic field. includes a power transfer winding that generates power for the microprocessor and is connected to the microprocessor means. Data retention card with power supply means. 6. Power supply means: embedded within the card-like member and connected across the power transfer winding. 2. A data retention card as claimed in claim 1, including a diode rectifier. 7. Read/write device for use with computerized data retention cards And: acceptance means provided in the reading/writing device for accepting the card; electrical signal generating means incorporated into the read/write device and generating an electrical output signal; Mounted on the read/write device and connected to the electrical signal generating means to provide an electrical output. electrical-to-optical converter means for converting the power signal into an optical signal and transmitting it to the card; electrical signal processing means in the read/write device; combined with the read/write device; Display means for visually displaying data in response to electrical signal processing means; and reading/writing mounted on the card to transmit electrical input signals in response to optical signals from the card. optical-to-electrical converter means for transmitting the signal to the signal processing means; A device comprising: 8. A device located within the read/write device that induces current in the power transfer windings within the card. A power source connected to a source of electrical power that contains a power transfer winding that generates an external magnetic field that 8. A read/write device according to claim 7, comprising a stage. 9. In combination with a computerized data retention card and a read/write device Yes: insertable into the read/write device and containing microcomputer means; A thin card-like member attached to the card-like member, and a microcomputer The electrical output signal from the microcomputer means is connected to the microcomputer means to convert the electrical output signal into an optical signal. first electrical-to-optical converter means for converting and transmitting to a read/write device; electrical signal processing means in the read/write device; combined with the read/write device; display means for visually displaying data in response to the electrical signal processing means; mounted on the read/write device and adapted to the optical signal from the first electrical-to-optical converter means; first optical-to-electrical converter means for responsively communicating the electrical input signal to the electrical signal processing means; ; electrical signal generating means provided in the read/write device for producing an electrical output signal; ; Mounted on a read/write device and connected to an electrical signal generating means to generate an electrical signal. second electrical-to-optical converter means for converting the electrical output signal from the signal generating means into an optical signal; ; and mounted on the card-like member and connected to the microcomputer means. the electrical input signal to the microcontroller in response to the optical signal from the second electrical-to-optical converter means. second optical-to-electrical converter means for communicating to computer means; A combination comprising: 10. The second electrical-to-optical converter means: converting electrical data signals from microcomputer means into corresponding optical data signals; converter; and converting electrical clock signals from microcomputer means into corresponding optical clock signals; 10. A combination according to claim 9, including a converter for converting. 11. The second opto-to-electrical converter means includes at least one phototransistor. The combination according to claim 9. 12. The first electrical-to-optical converter means may include at least one light emitting diode. The combination described in Scope 9. 13. located within the card-like member and connected to the microcomputer means; a first power source means including a first power transfer winding embedded within the door-shaped member; and a first power transfer winding within the read/write device and connected to a source of power; a magnetic field that generates a current within it to power the microcomputer means. second power supply means including a second power transfer winding for generating a field; 10. The combination according to claim 9, comprising: 14. A first power supply means is embedded in the card-like member and connected to the first power transfer winding. A combination according to claim 13 comprising diode rectifiers connected across. .