Two-way radio-based electronic toll collection method and system for highway

• US 6,342,844 B1
• Filed: 10/15/1998
• Issued: 01/29/2002
• Est. Priority Date: 11/04/1997
• Status: Expired due to Fees

• Current Assignee: Alexander Rozin
• Original Assignee: Alexander Rozin
• Inventors: Rozin, Alexander
• Primary Examiner(s): Lefkowitz, Edward
• Application Number:
  US09/174,801
• Time in Patent Office: 1,202 Days
• Field of Search: 340/928, 340/933, 340/901, 340/905, 342/42, 701/117
• US Class Current: 340/933
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: G08G 1/017 identifying vehicles G08G1/015, G08G1/054 take precedence

Abstract

This invention relates generally to automatic radio-frequency (RF) real-time high-way toll collection from moving vehicles. It especially adapted to the use of an untraceable electronic check debited from smart card and communicated in a cryptographically sealed envelope message. The invention relates directly to an in-vehicle unit (IVN), noncontact IC card (NIC), and a roadside collection station (RCS) and to an overall system incorporating a plurality of RCS'"'"'s, IVN'"'"'s and NIC'"'"'s. The invention may be used for parking collections and other types of road pricing and individual access remote control applications, that require personal authentication and payment. The new in the art is two-way radio-based electronic toll collection method on highway comprising the steps of providing communication terminal (Reader/Writer) with RF antenna which transmits continuously downlink energy-transmitting signal at first predetermined frequency, and generates a communication hopping channels for bi-directional data transfer, moreover hopping frequency is synthesized of said first predetermined frequency used as reference. Next phase of said toll collection method is to furnish each vehicle passing along the highway with a noncontact IC card capable to receive downlinked energy-transmitting signal in order to power the electronic components integrated within IC card, to synthesize of a communication channels of hopping frequency, that are synchronized by the said first radio-frequency used as reference.

Claims

1. Two-way radio frequency (RF) data exchange method utilizing a remote RF communication terminal and a noncontact smartcard operable to communicate with said terminal within interrogate area, the method comprising the steps of:

radiation by a remote RF communication terminal of an energy-transmitting signal at first predetermined frequency, which is being modulated by a first data signal, and moreover

generating and transmitting by a remote RF communication terminal of first communication hopping channels for transfer and interchange of second data signal, and

receiving by a remote RF communication terminal of second communication hopping channels transferring a response data signal produced and generated by said smartcard, and

wherein first and second communication hopping channels operating respectively by means of carrier hopping frequencies modulated correspondingly by second data signal and a response data signal, and

wherein both second data signal and a response data signals containing a specific encrypted identification information, and an encrypted electronic value transfer information, and

wherein first communication hopping channels combining respectively a plurality of downlink channels for transmission of second data signal from a remote RF communication terminal to a noncontact smartcard while simultaneous operation of numerous noncontact smartcards when last are disposed at interrogate area in the same time, and

wherein second communication hopping channels are combining respectively a plurality of uplink channels for transmission of a response data signal while simultaneous operation of numerous noncontact smartcards when last are disposed at interrogate area in the same time, and

wherein a plurality of downlink and uplink channels are predestined and designed to operate in frequency hopping mode with a purpose to prevent collisions, interference and data interception of both second and response data signals while simultaneous operation of numerous smartcards when last are disposed at interrogate area in the same time, and additionally steps of;

disposing of first communication hopping channels in a frequency bandpass which is located apart from first predetermined frequency, and

disposition of second communication hopping channels in a frequency bandpass which is located apart from first predetermined frequency, and moreover

disposition of second communication hopping channels in the same frequency bandpass as first communication hopping channels, and furthermore

using first predetermined frequency to employ a reference to synthesize and synchronize a carrier hopping frequencies of said communication hopping channels, and

wherein first data signal contains a control codes designed to synchronize a hope transitions of a separate carrier frequencies within said communication hopping channels in order to prevent collisions, interference and data interception between said channels, and additionally

performing by a noncontact smartcard the following operations comprising;

receiving of an energy-transmitting signal radiated by remote RF communication terminal at first predetermined frequency and then

deriving an induced electric energy thereof in order to power the noncontact smartcard, and

detecting and extracting of said control codes from an energy-transmitting signal, which codes comprising an information about available and an assigned communication hopping channels, and further;

selecting and assignment of one of available to communicate among downlink channels and one of available to communicate among uplink channels to perform a personal downlink channel and a personal uplink channel, and afterward

synthesizing and generating by said noncontact smartcard a personal downlink channel for receiving second data signal produced by said remote RF communication terminal, and

producing of a response data signal comprising a specific encrypted identification information, and an encrypted electronic value transfer information, and consequently

synthesizing and generating by said noncontact smartcard a personal uplink channel out of a plurality of uplink channels for transmission of a response data signal produced by said noncontact smartcard, and moreover providing steps of;

deriving and recovering of first predetermined frequency out of an energy-transmitting signal, and further

using of said recovered first predetermined frequency as a reference to synthesize and synchronize a carrier hopping frequency of an assigned personal uplink and downlink channels, and additionally

performing a control and synchronization of a hope transitions of said carrier hopping frequencies by means of said control codes being a component of first data signal, which codes are detected by said smartcard from an energy-transmitting signal, and

designing and maintaining a sequence of hope transition of first and second communication hopping channels in synchronous mode to prevent the hop to the same carrier frequency of two smartcards at the same time.

2. Two-way radio frequency (RF) data exchange method of claim 1, wherein a noncontact smartcard performing operations of:

scanning of the frequency bandpass occupied by first communication hopping channels with a purpose to detect and select an available free communication hopping channel when said control codes are absent or not obtainable after detecting of first predetermined frequency of an energy transmitting signal, and;

detecting, selecting confirming and assignment of an available free communication hopping channels with a purpose to perform a personal downlink channel and a personal uplink channel, and

synthesizing and generating of the assigned to communicate a personal downlink and a personal uplink channels for corresponding receiving and transmitting of second and a response data signals, and

wherein the selecting and assignment of an available to communicate communication hopping channel is provided in compliance with preventing the hop to the same carrier frequency for two smartcards at the same time, and

wherein both second data signal and a response data signal contain a specific identification information relating respectively to remote RF communication terminal and to a noncontact smartcard, and accordingly to an electronic value transfer information.

3. Two-way radio frequency (RF) data exchange method of claim 2, comprising steps of:

providing a noncontact smartcard with an antenna module exhibiting a parallel resonant mode at first predetermined frequency and a series resonant mode at a frequency bandpass occupied by both first and second communication hopping channels, and;

deriving the maximum voltage from the energy-transmitting signal at the parallel resonant mode predetermined for powering of a noncontact smartcard, and

receiving of second data signal and transmitting of a response data signal using the series resonant mode predetermined and designed to increase the power of a response data signal transmitted via uplink channel back to remote RF communication terminal and therefore to increase a space and operating distance of the communication hopping channels and moreover providing operations of;

selecting and designing of a predetermined frequency difference between parallel and series resonant modes with a purpose to provide an electrical separation and an electromagnetic decoupling inside of the antenna module between an energy-transmitting signal and the communication hopping channels in order to avoid parasitic intermodulation and distortions caused by the energy-transmitting signal, and additionally to prevent collisions of a transmitted and received data signals, and moreover

selecting and designing of said frequency bandpass to be significantly higher than first predetermined frequency with a purpose to provide a necessary width of a passband for allocation of a numerous hopping communication channels, and additionally

selecting and designing of the frequency bandpass to be significantly higher than first predetermined frequency with a purpose to provide a small and portable dimensions of an antenna module.

4. Two-way radio frequency (RF) data exchange method as claimed in claim 3, predetermined and designed to provide a vehicle identification and a toll collection, comprising steps of:

arranging a remote RF communication terminal at a roadside toll collection area and disposition of a noncontact smartcard within a vehicle, and

providing and maintaining by means of a remote RF communication terminal a vehicle identification, an electronic fund transfer and toll collection, and moreover

verifying of an electromagnetic field strength of said energy-transmitting signal at a noncontact smartcard location area with a purpose to check whether the field strength is enough to induce an electric energy which is adequate to power the noncontact smartcard, and

regenerating of an extra portion of energy-transmitting alternating field at a noncontact smartcard location area with a purpose to power the noncontact smartcard if the field strength of energy-transmitting signal radiated by remote RF communication terminal is not enough to induce an electric energy adequate to power the smartcard, and

furnishing with a special in-vehicle unit designed to perform said operations of receiving, verifying and regeneration an extra portion of energy-transmitting alternating field if the energy, induced by signal radiated by remote RF communication terminal is not enough to power the smartcard, and additionally;

arranging said noncontact smartcard proximate to said in-vehicle unit, and

wherein said noncontact smartcard operable to communicate with both said terminal and with an in-vehicle unit.

5. Two-way radio frequency (RF) data exchange method as claimed in claim 4, comprising steps of:

selecting and assigning of the first predetermined frequency of an energy-transmitting signal radiated by a remote RF communication terminal to be different to the frequency of a parallel resonant mode exhibited by a noncontact smartcard antenna module in the case when a toll collection area is predetermined for vehicles passing far away of a roadside RF communication terminal at a distance range disallowing to induce directly an electric energy sufficient to power the smartcard, and additionally providing the operations of;

receiving and verifying an electromagnetic field strength of first predetermined frequency by means of in-vehicle unit, and further

performing of a regeneration of an extra portion of an energy-transmitting alternating field at second predetermined frequency which is designed to correspond to a parallel resonant mode of a noncontact smartcard antenna module with a purpose to induce an electric energy sufficient to power the smartcard, and;

synthesizing and synchronization of second predetermined frequency by using the first predetermined frequency employing a reference signal, and wherein a noncontact smartcard providing operations of;

scrolling and scanning the frequency bandpass designed for and occupied by a communication hopping channels with a purpose to detect and select an available free communication hopping channel in order to provide a bi-directional data transfer and interchange with a remote RF communication system, and further

detecting and selecting of an available communication hopping channels, and

assigning and confirming of an available distinct first and a distinct second communication hopping channel with a purpose to establish a personal communication hopping channels and consequently to prevent the hop to the same carrier frequency for two smartcards at the same time, and

synthesizing and generating of the assigned to communicate a personal first communication hopping channel and a personal second communication hopping channel for corresponding transfer and interchange of second and a response data signals, and furthermore

providing a synchronization of a hope transitions of second communication hopping channels by means of control codes being a component of second data signal when first data signal is not available.

6. Two-way radio frequency (RF) data exchange system comprising remote RF communication terminal and a noncontact smartcard operable to communicate with said terminal within interrogate area, the system comprising:

transmitting and receiving means with first antenna module relating to a remote RF communication terminal designed for radiation of an energy-transmitting signal at first predetermined frequency which is being modulated by first data signal, and

wherein said transmitting and receiving means with first antenna module additionally designed for

generating and transmitting of a first communication hopping channels for transfer and interchange of second data signal, and for

receiving of second communication hopping channels containing a response data signal from said noncontact smartcard, and

which first and second communication hopping channels are predestined and designed to prevent collisions, interference and data interception of respectively second and response data signals while simultaneous operation of numerous smartcards when last are disposed at interrogate area in the same time, and

wherein both first and second communication hopping channels disposed at a frequency bandpass located apart from first predetermined frequency, and

wherein both first and second communication hopping channels occupying the same frequency bandpass, and

wherein said transmitting and receiving means synthesizing a sequence of first and second communication hopping channels at a carrier hopping frequencies which are synchronized by first predetermined frequency as a reference, and

wherein first communication hopping channels are combining respectively a plurality of downlink channels for transmission of a second data signal from a remote RF communication terminal to a noncontact smartcard while simultaneous operation of numerous noncontact smartcards when last are disposed at interrogate area in the same time, and

wherein second communication hopping channels are combining respectively a plurality of uplink channels for transmission of a response data signal from a noncontact smartcard to a remote RF communication terminal while simultaneous operation of numerous noncontact smartcards when last are disposed at interrogate area in the same time, and

wherein the plurality of downlink and uplink channels designed to operate in synchronized mode to prevent the hop to the same carrier frequency for two smartcards at the same time, and

wherein both second data signal and a response data signal containing an encrypted specific identification information, and respectively an encrypted electronic value transfer, and

wherein first data signal containing a control codes designed to synchronize a hope transitions of a separate carrier frequencies within said communication hopping channels in order to prevent collisions, interference and data interception, and moreover;

wherein said noncontact smartcard comprising second antenna module, microprocessor with memory, a reset circuit, a rectifier circuit and first clock conditioner, additionally comprising

first and second multipliers, first modulation means and first demodulation means, first frequency synthesizer, and first transceiver connected to second antenna module performing a parallel resonance mode occurring at first predetermined frequency and exhibiting a series resonance mode occurring at a frequency bandpass occupied by first and second communication hopping channels, and, wherein a noncontact smartcard designed to;

receive an energy-transmitting signal at first predetermined frequency corresponding to a parallel resonance mode of second antenna module, and then predestined to;

receive second data signal and respectively transmit the response data signal using a series resonance mode of second antenna module at a frequency bandpass relating to first and second communication hopping channels, and

wherein first frequency synthesizer is predetermined to produce a sequence of separate hopping frequencies employing carriers for second communication hopping channels, which hopping frequencies are synchronized by first predetermined frequency as a reference, and furthermore

wherein a hope transitions of said separate hopping frequencies are controlled and synchronized by said control codes being a component of first data signal, and which codes are detected by said smartcard from an energy-transmitting signal.

7. Two-way radio frequency (RF) data exchange system of claim 6, wherein second antenna module comprising:

first inductive coil performing a parallel resonant circuit at first predetermined frequency for receiving an energy-transmitting signal from a remote RF communication terminal and for deriving a maximum of an induced electric energy to power the smartcard, and

second inductive coil performing a series resonant circuit at a frequency bandpass predetermined for a plurality of downlink and uplink channels for receiving of second data signal and respectively for transmitting of a response data signal, and

wherein a series resonant circuit performing transmitting/receiving antenna predetermined and designed to increase the power of a radiated response data signal transmitted via uplink channel back to remote RF communication terminal and therefore to increase a space and operating distance of the communication hopping channels, and

wherein said frequency bandpass is significantly higher than first predetermined frequency of an energy-transmitting signal in order to prevent intermodulation distortion and interference between an energy-transmitting signal and a communication hopping channels, and;

wherein said frequency bandpass selected and designed to be significantly higher than first predetermined frequency with a purpose to provide a necessary width of a passband for allocation of a numerous hopping communication channels, and additionally

wherein an equivalent admittance of second inductive coil, occurring at a frequency bandpass predetermined for the communication hopping channels, is significantly large than equivalent admittance of first inductive coil with a purpose to prevent electrical and electromagnetic mutual coupling, and, consequently, to eliminate mutual distortions, interference and intermodulation caused by an energy-transmitting signal, and

wherein said parallel resonant circuit comprising a capacitor in parallel alignment with a first inductive coil with a purpose to achieve a parallel resonant mode, and;

wherein said series resonant circuit comprising second inductive coil in serial connection with a parallel alignment of said capacitor and first coil, and

wherein first and second inductive coils manufactured as continuous flat winding, and

wherein an equivalent impedance of first inductive coil, occurring at first predetermined frequency, is significantly large than equivalent impedance of second inductive coil with a purpose to prevent electrical and electromagnetic mutual coupling, and, consequently, to eliminate mutual distortions, interference and intermodulation caused by an energy-transmitting signal.

8. Two-way radio frequency (RF) data exchange system claim 6,

wherein second antenna module containing first inductive coil performing a parallel resonant circuit at first predetermined frequency for receiving an energy-transmitting signal from a remote RF communication terminal and then for subsequent deriving of maximum of an induced electric energy to power the smartcard, additionally comprising

a conductive strip performing a microwave antenna, and

wherein the conductive strip combining an equivalent series resonant circuit with a distributed capacitance between said conductive strip and turns of a said inductive coil, and

wherein said series resonant circuit performing an antenna for respectively receiving and transmitting of second data signal and of a response data signal at a microwave frequency bandpass predetermined for a plurality of downlink and uplink channels which are located apart from first predetermined frequency, and

wherein a series resonant circuit performing transmitting/receiving antenna predetermined and designed to increase the power of a radiated response data signal transmitted via uplink channel back to remote RF communication terminal and, therefore, to increase a space and operating distance of the communication hopping channels, and moreover:

wherein said microwave frequency bandpass is significantly higher than first predetermined frequency of an energy-transmitting signal in order to provide electrical separation and prevent electromagnetic mutual coupling, and, therefore, to eliminate mutual and intermodulation distortion, interference and collisions between an energy-transmitting signal and a communication hopping channels, and

wherein said frequency bandpass selected and designed to be significantly higher than first predetermined frequency with a purpose to provide a necessary width of a passband for allocation of a numerous hopping communication channels, and additionally

wherein an equivalent impedance of said series alignment of conductive strip with said distributed capacitance occurring at first predetermined frequency, is significantly large to load an equivalent impedance of first inductive coil with a purpose to provide electrical separation and prevent electromagnetic mutual coupling, and, therefore, to eliminate mutual distortions, interference and intermodulation caused by an energy-transmitted signal, and

wherein an equivalent admittance of said series alignment of conductive strip with said distributed capacitance, occurring at a frequency bandpass predetermined for a communication hopping channels, is significantly large than equivalent admittance of first coil with a purpose to provide electrical separation and prevent electromagnetic mutual coupling and therefore to eliminate mutual distortions, interference and intermodulation caused by an energy-transmitted signal.

9. Two-way radio frequency (RF) data exchange system of claim 7 comprising a noncontact smartcard wherein:

said microprocessor designed to process second data signal received over downlink channel from a remote RF communication terminal, and consequently to produce a response data signal to be transmitted over uplink channel back to a remote RF communication terminal, and additionally

wherein said microprocessor designed to select, desire, confirm and assign one of an available communication hopping channels to perform a personal downlink/uplink channel with a purpose to prevent the hop to the same frequency of two noncontact smartcards at the same time, and in addition;

wherein said microprocessor designed to manage and manipulate with operations of synchronization and switching of hope transitions of an assigned carrier frequency for second communication hopping channels with a purpose to prevent the hop to the same frequency of two noncontact smartcards at the same time, and furthermore;

wherein first frequency synthesizer producing first and second subcarrier frequencies to be used as a reference for frequency conversion respectively in first and second multipliers, and

wherein first multiplier intended to produce a shift-down of a received carrier frequency of an assigned personal downlink channel by means of utilizing the first subcarrier frequency as reference and

wherein first demodulation means designed to provide detecting of a shifted-down received carrier frequency with further extracting of second data signal to be input into a microprocessor, and

wherein first modulation means are designed to transform a response data signal produced by microprocessor to a form suitable for transmission over a communication hopping channel, and

wherein second multiplier is determined and designed to shift-up an output signal of first modulation means with a purpose to obtain a modulated assigned carrier hopping frequency for transmission within an assigned personal uplink channel, and

wherein second multiplier utilizing second subcarrier frequency as a reference for producing a frequency shift-up till an assigned carrier hopping frequency for transmission within an assigned personal uplink channel, and

wherein first transceiver is designed to receive and amplify second data signal transmitted by remote RF communication terminal over downlink channel, and, consequently, to amplify and transmit a response data signal over uplink channel.

10. Two-way radio frequency (RF) data exchange system of claim 9,

wherein input of first clock conditioner is connected to first coil of second antenna module performing a parallel resonant circuit, and

wherein first clock conditioner predetermined to produce a shaped clock signal to run said microprocessor, and

wherein first clock conditioner designed to select and recover first predetermined frequency in order to provide a reference signal for first frequency synthesizer with a purpose to synchronize the synthesized carrier hopping frequencies, and:

wherein first frequency synthesizer controlled and manipulated by microprocessor with a target to provide a sequential switching of first and second subcarrier frequencies in correspondence to a desired sequence of an assigned carrier hopping frequencies.

11. Two-way radio frequency (PF) data exchange system of claim 10, wherein first frequency synthesizer comprising:

first programmable divider designed to produce a frequency reference signal predetermined to establish and obtain a frequency slot for an assigned carrier hopping frequency relating to an assigned personal communication hopping channel, and

wherein a recovered first predetermined frequency employs an input clock signal for first programmable divider, an d additionally, said recovered first pre determined frequency performs phase synchronization of said assigned carrier hopping frequency, and, additionally, first frequency synthesizer comprising;

second programmable divider designed to obtain a feedback reference frequency in order to synthesize and acquire a subcarrier hopping frequency in correspondence to said assigned carrier hopping frequency relating to the assigned personal communication hopping channel, and, furthermore, first frequency synthesizer comprising;

a voltage controlled oscillator (VCO) designed to generate first and second subcarrier hopping frequencies, and

wherein VCO performs a local oscillator (LO) function for a production of a frequency shift-down and a frequency shift-up in first and second multipliers respectively, and

wherein first subcarrier hopping frequency is intended to employ a LO frequency for first multiplier to produce a shift-down of said received carrier hopping frequency of corresponding assigned personal downlink channel, and

wherein second subcarrier hopping frequency is intended to employ a LO frequency for second multiplier to produce a shift-up till an assigned for transmission a carrier hopping frequency of corresponding assigned personal uplink channel, and, further, first frequency synthesizer containing;

a channel programmable memory (PROM) designed to set directly a divide ratio for first and second programmable dividers with a purpose to reduce the ripples of VCO by means of decreasing a switch and settle time of both first and second programmable dividers, and

wherein a channel PROM controlled by said microprocessor, and, additionally, first frequency synthesizer including,

a phase detector connected in series with a loop low pass filter and designed to compare a frequency reference signal, produced by first programmable divider, with said feedback reference frequency for obtaining a phase difference signal and hence to control and regulate the VCO'"'"'s oscillation providing maintenance of first and second subcarrier hopping frequencies to be disposed in said assigned frequency slot, and, accordingly, to be proportional to an assigned carrier hopping frequency in correspondence to the desired and assigned personal downlink/uplink channels.

12. Two-way radio frequency (RF) data exchange system of claim 11 wherein a remote RF communication terminal containing controller, power transmitter, first antenna module, and an additional RF circuitry predestined for transmitting/receiving over said downlink/uplink channels and comprising second transceiver, third and forth multipliers, second modulator means and second demodulator means, second and third frequency synthesizers and a reference oscillator, and wherein, additionally, first antenna module comprising:

a low frequency (LF) antenna designed for radiation of an energy-transmitting signal at first predetermined frequency, and additionally comprising

a high frequency (HF) antenna for transmitting and receiving respectively over downlink and uplink channels, and

wherein a power transmitter coupled with the LF antenna for radiation of an energy-transmitting signal to power a noncontact smartcard, and

wherein second transceiver coupled with the HF antenna, and predetermined to transmit second data signal over downlink channels and receive a response data signal over uplink channels, and

wherein third multiplier determined to shift-down a received carrier frequency of an uplink channel, and

wherein second demodulation means predestined for detecting a shifted-down received uplink channel with subsequent extracting a response data signal to be input to said controller, and

wherein second modulation means predestined to transform second data signal produced by said controller to a form suitable for a transmission over a communication hopping channel, and

wherein forth multiplier determined and designed to shift-up an output signal of second modulation means in order to obtain a modulated carrier frequency of a desired and assigned communication hopping channel for transmission over downlink channel, and

wherein second frequency synthesizer predestined and designed for generating a sequence of subcarrier frequencies corresponding to first and second communication hopping channels, and

wherein third frequency synthesizer predestined and designed to produce first predetermined frequency corresponding to a parallel resonance mode of second antenna module to power a noncontact smartcard, and

wherein a reference oscillator predestined to synchronize both second and third frequency synthesizers, and

wherein said controller designed to manage and manipulate with second frequency synthesizer, third frequency synthesizer, second modulation means, and second demodulation means, and

wherein said controller is designed to manipulate with procedures of synchronization and switching of a sequence of downlink and uplink hopping channels, and to maintain a synthesized frequency of an energy transmitting electromagnetic signal which is predestined to power a noncontact smartcard, and

wherein said controller generating said control codes designed to synchronize a hope transitions of carrier frequency of a sequence of said downlink and uplink hopping channels, and

wherein said controller is intended to manage and maintain the operations of encryption, identification, toll collection, payment, and an electronic value transfer.

13. Two-way radio frequency (RF) data exchange system of claim 12, designed to provide vehicle identification and toll collection, and additionally comprising an in-vehicle unit arranged within a vehicle with a purpose to increase an interrogation area, and

wherein a remote RF communication terminal is arranged at a roadside toll collection area with a purpose to provide a vehicle identification and maintain a toll collection and an electronic fund transfer, and

wherein said noncontact smartcard arranged inside a vehicle proximate to said in-vehicle unit, and

wherein said noncontact smartcard operable to communicate with both said terminal and with an in-vehicle unit, which is predestined and designed for:

receiving first predetermined frequency corresponding to energy-transmitting signal radiated by remote RF communication terminal and then for;

verifying the field strength of said energy-transmitting signal at a smartcard location area with a purpose to check whether the field strength is enough to induce an electric energy which is adequate to power the smartcard, and furthermore for

performing regeneration with following re-radiation of an extra portion of energy-transmitting alternating field if the field strength at first predetermined frequency is not adequate to power the smartcard when vehicles are passing far away of a remote RF communication terminal at a distance range disallowing to induce directly an electric energy sufficient to power the smartcard, and

wherein the regenerated and re-radiated extra portion of an energy-transmitting alternating field is synthesized and synchronized in correspondence with received first predetermined frequency being a reference, and

wherein the frequency of a regenerated and retransmitted synthesized energy-transmitting alternating field is designed to be equal to a frequency of a parallel resonance mode of second RF antenna in order to maximize the derived voltage to power the smartcard.

14. Two-way radio frequency (RF) data exchange system of claim 13, wherein an in-vehicle unit having microcontroller, third antenna module, and additionally comprising a retransceiver, forth frequency synthesizer, a voltage comparator and second clock conditioner, and:

wherein third antenna module coupled with retransceiver and both designed for receiving a signal at first predetermined frequency and retransmitting of an extra portion of energy-transmitting alternating field at second predetermined frequency, and

wherein forth frequency synthesizer producing a second predetermined frequency which is designed to be equal to a frequency of a parallel resonance mode of second antenna module arranged at said noncontact smartcard, and

wherein a voltage comparator predetermined to compare and verify the amplitude of first predetermined frequency with a reference voltage level corresponding to the field strength which is adequate to power said noncontact smartcard, and thereafter

a voltage comparator intended to produce an enable signal allowing operation of forth frequency synthesizer if the field strength is not enough to induce an electric energy which is adequate to power the smartcard, and

wherein second clock conditioner recovering the first predetermined frequency from an energy-transmitting signal in order to provide a reference clock signal for forth synthesizer with a purpose to achieve of a phase and frequency correction of an extra portion of an energy-transmitting alternating field, and

wherein microcontroller is designed to manipulate with tuning of second predetermined frequency to be equal to a frequency of a parallel resonance mode of second antenna module when a different types of noncontact smartcards are used.

15. Two-way radio frequency (RF) data exchange system of claim 8 comprising a noncontact smartcard wherein:

said microprocessor designed to process second data signal received over downlink channel from a remote RF communication terminal, and consequently to produce a response data signal to be transmitted over uplink channel to a remote RF communication terminal, and additionally

wherein said microprocessor designed to select, desire, confirm and assign one of an available communication hopping channels to perform a personal downlink/uplink channel with a purpose to prevent the hop to the same frequency of two noncontact smartcards at the same time, and in addition;

wherein said microprocessor designed to manage and manipulate with operations of synchronization and switching of hope transitions of an assigned carrier frequency for second communication hopping channels with a purpose to prevent the hop to the same frequency of two noncontact smartcards at the same time, and furthermore;

wherein first frequency synthesizer producing first and second subcarrier frequencies to be used as a reference for frequency conversion respectively in first and second multipliers, and

wherein first multiplier intended to produce a shift-down of a received carrier frequency of an assigned personal downlink channel by means of utilizing the first subcarrier frequency as reference, and

wherein first demodulation means designed to provide detecting of a shifted-down received carrier frequency with further extracting of second data signal to be input into a microprocessor, and

wherein first modulation means are designed to transform a response data signal produced by microprocessor to a form suitable for transmission over a communication hopping channel, and

wherein second multiplier is determined and designed to shift-up an output signal of first modulation means with a purpose to obtain a modulated assigned carrier hopping frequency for transmission within an assigned personal uplink channel, and

wherein second multiplier utilizing second subcarrier frequency as a reference for producing a frequency shift-up till an assigned carrier hopping frequency for transmission within an assigned personal uplink channel, and

wherein first transceiver is designed to receive and amplify second data signal transmitted by remote RF communication terminal over downlink channel, and, consequently, to amplify and transmit a response data signal over uplink channel.

16. Two-way radio frequency (RF) data exchange system of claim 15,

wherein input of first clock conditioner is connected to first coil of second antenna module performing a parallel resonant circuit, and

wherein first clock conditioner predetermined to produce a shaped clock signal to run said microprocessor, and

wherein first clock conditioner designed to select and recover first predetermined frequency in order to provide a reference signal for first frequency synthesizer with a purpose to synchronize the synthesized carrier hopping frequencies, and:

wherein first frequency synthesizer controlled and manipulated by microprocessor with a target to provide a sequential switching of first and second subcarrier frequencies in correspondence to a desired sequence of an assigned carrier hopping frequencies.

17. Two-way radio frequency (RF) data exchange system of claim 16, wherein first frequency synthesizer comprising:

first programmable divider designed to produce a frequency reference signal predetermined to establish and obtain a frequency slot for an assigned carrier hopping frequency relating to an assigned personal communication hopping channel, and

wherein a recovered first predetermined frequency employs an input clock signal for first programmable divider, and additionally, said recovered first predetermined frequency performs phase synchronization of said assigned carrier hopping frequency, and, additionally, first frequency synthesizer comprising;

second programmable divider designed to obtain a feedback reference frequency in order to synthesize and acquire a subcarrier hopping frequency in correspondence to said assigned carrier hopping frequency relating to the assigned personal communication hopping channel, and, furthermore, comprising;

a voltage controlled oscillator (VCO) designed to generate first and second subcarrier hopping frequencies, and

wherein VCO performs a local oscillator (LO) function for a production of a frequency shift-down and a frequency shift-up in first and second multipliers respectively, and

wherein first subcarrier hopping frequency is intended to employ a LO frequency for first multiplier to produce a shift-down of said received carrier hopping frequency of corresponding assigned personal downlink channel, and

wherein second subcarrier hopping frequency is intended to employ a LO frequency for second multiplier to produce a shift-up till an assigned for transmission a carrier hopping frequency of corresponding assigned personal uplink channel, and, further, first frequency synthesizer containing

a channel programmable memory (PROM) designed to set directly a divide ratio for first and second programmable dividers with a purpose to reduce the ripples of VCO by means of decreasing a switch and settle time of both first and second programmable dividers, and

wherein a channel PROM controlled by said microprocessor, and additionally including a phase detector connected in series with a loop low pass filter and designed to compare a frequency reference signal, produced by first programmable divider, with said feedback reference frequency for obtaining a phase difference signal and hence to control and regulate the VCO'"'"'s oscillation providing maintenance of first and second subcarrier hopping frequencies to be disposed in said assigned frequency slot, and, accordingly, to be proportional to an assigned carrier hopping frequency in correspondence to the desired and assigned personal downlink/uplink channels.