US4720626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IC card processing method and processing device therefor, and IC card
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1984-05-18
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Granted: 1988-01-19
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Expires: 2004-05-18
Abstract
Abstract The present invention discloses an IC card, and a processing device for the IC card and a processing method therefor. The IC card comprises a semiconductor IC in which a large number of data are stored. There are provided a winding which picks up an electromagnetic field for forming a power current with respect to the semiconductor IC, and another winding and a Hall element for picking up the data of the semiconductor IC or writing the data into the semiconductor IC. These semiconductor IC, windings and the Hall element are all assembled within a card member of plastics. A device for processing this card comprises a winding for forming an electromagnetic field as a source of power current, another winding and a Hall element for transmitting data to the IC card and receiving it therefrom, and a circuit cooperative with these windings and the Hall element. These IC card and the processing device electromagnetically effects transmission of power current and data in accordance with so called a non-contact system.
Inventors
- 👤 Seiichi Nishikawa
- 👤 Koichi Okada
- 👤 Teruaki Shiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/08; G06K7/082; G06F; G06F3/00; G06F3/007; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/0723
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
A processing device for an IC card designed so as to supply power and clock signals to an integrated circuit (IC) card on which an electronic circuit including a microcomputer and a memory is mounted and to transmit data to said IC card and receive data therefrom, thus processing said IC card, comprising: (a) an oscillator for producing an output having a predetermined frequency on the basis of said clock signal, (b) a first winding for producing a magnetic signal corresponding to the output of said oscillator, (c) a second winding for producing a magnetic signal indicative of data to be supplied to said IC card, and (d) a transducer means, comprising a Hall element, for receiving the magnetic signal indicative of data supplied from said ID card.
Claim 2
Dependent Claim
128 words
A processing device for an IC card designed so as to supply power and clock signals to an integrated circuit (IC) card on which an electronic circuit including a microcomputer and a memory is mounted and to transmit data to said IC card and receive data therefrom, thus processing said IC card, comprising: (a) an oscillator for producing an output having a predetermined frequency on the basis of said clock signal, (b) a first winding for producing a magnetic signal corresponding to the output of said oscillator, (c) a second winding for producing a magnetic signal indicative of data to be supplied to said IC card, and (d) a transducer means, comprising a Hall element, for receiving the magnetic signal indicative of data supplied from said ID card.
Claim 3
Dependent Claim
135 words
An integrated circuit (IC) card on which an electronic circuit including a microcomputer and a memory is mounted to transmit data to a card processing device and to receive data therefrom in a noncontact manner by supplying power and clock signals from said card processing device in a non-contact manner, comprising: (a) a circuit having a first winding, a power supply circuit and a clock signal pick-up circuit to receive a magnetic signal having a frequency with a predetermined relationship with that of said clock signal to form a d.c. voltage and a clock signal, (b) transducer means, comprising a Hall element, for receiving a magnetic signal indicative of data fed from said processing device, and (c) a second winding for forming a magnetic signal indicative of data to be fed to said processing device.
Claim 4
Dependent Claim
135 words
An integrated circuit (IC) card on which an electronic circuit including a microcomputer and a memory is mounted to transmit data to a card processing device and to receive data therefrom in a noncontact manner by supplying power and clock signals from said card processing device in a non-contact manner, comprising: (a) a circuit having a first winding, a power supply circuit and a clock signal pick-up circuit to receive a magnetic signal having a frequency with a predetermined relationship with that of said clock signal to form a d.c. voltage and a clock signal, (b) transducer means, comprising a Hall element, for receiving a magnetic signal indicative of data fed from said processing device, and (c) a second winding for forming a magnetic signal indicative of data to be fed to said processing device.
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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) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |