KR890016797A - Electronic data communication system - Google Patents

Abstract

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Description

Electronic data communication system

Since this is an open matter, no full text was included.

1 is a schematic block diagram of a system constructed of fixed stations and portable data processing cards. 2 is a partial circuit diagram of a station. 3 is a partial circuit diagram of a data processing card.

Claims (33)

A station including a station resonant circuit tuned to the first signal and an amplification detector for detecting the second signal loaded on the first signal; The card resonant circuit responds to the station resonant circuit for inductive coupling with the station resonant circuit to receive power from the station, and is output at the power received to load the card resonant circuit. Responding to the accumulated first data, the second signal is modulated by the second signal, and the fluidity coupling comprises a portable data processing card including a card communication circuit for transmitting the first data from the card to the station. Become; A station data communication circuit in the station for deactivating the station resonant circuit and deactivating the card resonant circuit in response to the second data accumulated in the station data communication circuit as inductive coupling means; The output of the data converter by combining a pulse generating circuit coupled to the card resonance circuit for generating a pulse in response to a predetermined change in the power state received by the card resonance circuit, and coupled to the pulse generating circuit in response to the pulse. A readout circuit is also provided in the data card that includes a data converter that conforms to this second data; A data transmission system for non-contact transfer of data between one station and one portable data card. The system according to claim 1, wherein the station data communication circuit includes first generating means for generating second data. The system according to claim 1 or 2, wherein the station data communication circuit is a suitably programmed microcomputer. 4. The system according to any one of claims 1 to 3, wherein the station data communication circuit includes a deactivation circuit for deactivating the station resonant circuit in response to the second data. The oscillator according to any one of claims 1 to 4, wherein the station resonant circuit is provided with an oscillator for generating a second frequency signal which responds to the first frequency signal and is converted into the first frequency signal by the frequency dividing means. System characterized. The system according to claim 5, wherein the frequency dividing means is controlled by a station data communication circuit. 7. The deactivation circuit according to claim 6, wherein the station also includes a deactivation circuit for deactivating the station resonant circuit in response to the second data, including means for changing the division ratio of the frequency dividing means to prevent the station resonant circuit from vibrating. System characterized in that. 8. A system according to any one of the preceding claims, wherein the portable material card also comprises a rectifier coupled to a smoothing capacitor for rectifying the received power. 9. The system according to any one of claims 1 to 8, wherein the card data communication circuit comprises second generating means for generating a second signal. 10. The system according to any one of claims 1 to 9, wherein the card data communication circuit further includes an imparting circuit for imparting a card resonant circuit in response to the second signal. 11. The system of claim 10, wherein modulation means are provided for modifying the first signal in response to the second signal. 12. The system of claim 11, wherein the modulation means serves to effect amplitude modulation. 13. The power supply according to any one of claims 4 to 12, further comprising a rectifier coupled to a smoothing capacitor for rectifying the power received by the portable data card, wherein the power received and discharged when the power received by the card resonant circuit drops. The system characterized in that a battery for recharging is included in the pulse generating circuit as it rises. The capacitor of claim 13, wherein the capacitor is discharged to a first time constant when the deactivation circuit is activated and recharged to a second time constant when the deactivation circuit is interrupted, such that the first time constant is generally greater than the second time constant, The time interval between the continuous discharge and recharge of the system is insufficient to sufficiently discharge the smoothing capacitor. 15. The system according to any one of claims 1 to 14, wherein the cardard data communication circuit is a suitably programmed microcomputer. 16. The system of claim 15, wherein the readout circuitry is at least partially contained in a microcomputer. A resonant circuit tuned to the first signal and an amplification detector for detecting the second signal loaded on the first signal; A station for use in a system according to any one of claims 1 to 16, further comprising a data communication circuit for deactivating the resonant circuit in response to data accumulated in the data communication circuit. 18. A station according to claim 17, wherein the data communication circuit includes generating means for generating data. 19. A station according to claim 17 or 18, wherein the data communication circuit is a suitably programmed microcomputer. 20. A station according to any one of claims 17 to 19, wherein the data communication circuit includes a deactivation circuit for deactivating the resonant circuit in response to the data. 21. An oscillator according to any one of claims 17 to 20, wherein a resonant circuit is provided for generating a second frequency signal which is responsive to the first frequency signal and is converted into a first frequency signal by a frequency divider. Bureau to say. A station as claimed in claim 21, wherein the frequency divider is controlled by a data communication circuit. 23. A station according to claim 22, further comprising a deactivation circuit for deactivating the resonant circuit in response to the data and including means for changing the division ratio of the frequency divider to prevent the resonant circuit from vibrating. . A resonant circuit tuned to the first signal and a data communication circuit designed to be output at a power received by the resonant circuit to impart a resonant circuit in response to data accumulated in the data communication circuit; In addition, a pulse generating circuit coupled to the resonant circuit and a pulse generating circuit coupled to and reacting to the pulse to generate a pulse in response to a predetermined change in power state received by the resonant circuit are transmitted to the card. A card for use in a system according to any one of claims 1 to 16, characterized in that a readout circuit is provided comprising a data converter adapted to conform to the data signal. A card according to claim 24, further comprising a rectifier coupled to a smoothing capacitor for rectifying the received power. A card according to claim 24 or 25, wherein the data communication circuit includes generating means for generating a second signal in response to the data accumulated therein. 27. The card according to claim 26, wherein the data communication circuit also includes a load circuit for loading the resonant circuit in response to the second signal. 28. The card according to claim 26 or 27, wherein modulation means are provided for modifying the first signal in response to the second signal. 29. A card according to claim 28, wherein the modulation means serves to effect amplitude modulation. A card according to any one of claims 25 to 29, wherein the pulse circuit includes a capacitor for discharging when the power received by the resonant circuit drops and recharging when the received power rises. 31. The capacitor of claim 30, wherein the capacitor discharges to a first time constant when the received power drops and recharges to a second time constant when the received power rises so that the first time constant is substantially greater than the second time constant, The time interval between the continuous discharge and recharge of the capacitor is insufficient to discharge the smooth capacitor sufficiently. 32. The card according to any one of claims 24 to 31, wherein the data communication circuit is a suitably programmed microcomputer. 33. The card of claim 32, wherein the readout circuitry is at least partially included in the microcomputer. ※ Note: The disclosure is based on the initial application.