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Description  |
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TECHNICAL FIELD
The present invention relates to an electronic identification system having remote automatic response capability and an identification method thereof, and more particularly, to an electronic identification system having remote automatic response
capability and an identification method thereof in which an identification control apparatus remotely calls and responds to a portable electronic apparatus to perform self-identification between the identification control apparatus and the portable
electronic apparatus and to thereby automatically control a piece of equipment to be controlled, so as to be widely used with any individual identification apparatus and to have an excellent security feature.
BACKGROUND ART
Recently, along with developments in electronics technology, electronic identification apparatuses for personal use have been rapidly developed. A personal identification apparatus is conventionally applied to a wide range of fields, including
doors, vehicular starters, personal computers and safes, as well as for use with prepaid card systems such as public telephones, parking lots and highway toll gates. The fields of application are continuously expanding at an increased rate.
Various types of the conventional individual identification apparatus can be classified according to the inputting method of their identification (ID) codes, i.e., pushbutton, card-insertion, fingerprint ID, speech-recognition, etc. Among these,
the pushbutton type has been most widely used, in which a user memorizes a secret access number and inputs the number into a system by pressing keys. This method has recently developed further, in connection with a wireless method. On the other hand,
the card-insertion type utilizes a magnetic strip card, a punched card or an electronic card containing an integrated circuit (called an "IC card"), which is inserted into a card reader as the method for ID code input. In current systems however, the
magnetic strip card system has been supplanted by that using IC cards, and accordingly, a multi-functional IC card system is being pursued. (Though fingerprint ID and speech-recognition type systems have been recently introduced, they have certain
problems in view of the real-time processing of fingerprints and speech, as well as low reliability and an impractical cost to the consumer, so wide distribution of these has not yet been made possible.)
With the conventional push-button system, the user need only to memorize an access number and does not run the risk of losing a key, card, etc. However, with increasing incorporation of more identification systems, more ID numbers become
necessary, and thus users are burdened with learning numerous access numbers. Also, operating the identification apparatus requires the cumbersome pressing of buttons to input the access code. Moreover, since the keypad is apt to be in sight of a third
party when operating the buttons, an inherent fallacy exists in view of security and safety.
In the conventional card-insertion system, memorization of the access number is unnecessary. However, as with the push-button system, every time the identification apparatus is to be operated, the card must be inserted into the card reader, and
if the user misplaces the card, unauthorized third-party usage is impossible to prevent. Accordingly, here too is an inherent fallacy, resulting in lowered security and safety. As for the IC card system, the issuance of the IC card itself is difficult
because issued cards should be monitored, so its usage has been limited.
In each case other than the speech recognition system, the above-described conventional identification apparatus systems require manual manipulation by the user or operation, and thus when both hands are busy, a user is incapable of inputting the
necessary information. Also, the conventional systems are specified according to the field of use and the entry method, so that their widespread usage is limited, i.e., in the home, at the office, outdoors, on the road, etc. Additionally, an
integration-control method of all these identification systems is impossible in certain geographical areas. Now, as current trends in self-service automation (vending machines, automatic toll booths, self-service sales counters and parking lots, etc.)
are proceeding at an accelerated rate in the every field of industry and home life, the necessity for an integrated identification system is becoming increasingly obvious.
DISCLOSURE OF THE INVENTION
Therefore, to solve the above problems, it is an object of the present invention to provide an electronic identification system having remote automatic response capability for which a master key method is applied so as to be capable of integrated
control of various types of individual identification apparatuses.
It is another object of the present invention to provide an electronic identification system having remote automatic response capability in which both of a user's hands are free, even when identification is carried out, by way of a remote
automatic response.
It is still another object of the present invention to provide an electronic identification system having remote automatic response capability in which labor costs can be saved by facilitating the system's registration and administration
procedures.
It is yet another object of the present invention to provide an electronic identification system having remote automatic response capability in which security and safety are very high.
It is yet still another object of the present invention to provide an electronic identification system having remote automatic response capability in which the system discriminately operates according to various levels of user access.
It is a further object of the present invention to provide an electronic identification system having remote automatic response capability for controlling the status of passage.
It is still a further object of the present invention to provide an electronic identification system having remote automatic response capability to which a pre-paying method can be adapted.
It is yet a further object of the present invention to provide an electronic identification system having remote automatic response capability in which a paid attendance can be automatically controlled.
It is still yet a further object of the present invention to provide an electronic identification system having remote automatic response capability for use in automatically controlling a toll gate.
It is still another object of the present invention to provide an electronic identification system having remote automatic response capability for use in connection with automatic bank deposit and withdrawal transactions.
To accomplish the above objects of the present invention, there is provided an electronic identification system having remote automatic response capability, comprising: at least one portable electronic apparatus enabled by a user's password
input, which, if a specific code loaded on a received call signal matches one of a plurality of specific codes registered in a first memory, loads a user access code corresponding to the matched specific code onto an identification signal and transmits
the access-code-loaded identification signal; and at least one automatic identification control apparatus which, if access of a user in possession of the portable electronic apparatus is detected, transmits the specific-code-loaded call signal and
receives the user-access-code-loaded identification signal which is generated in response to the call signal, and which, if the user access code loaded on the identification signal matches one of a plurality of user access codes registered in a second
memory, then operates a piece of equipment to be controlled, thereby resulting in that the automatic identification control apparatus having a plurality of registered specific codes, one of which corresponds to the enabled portable electronic apparatus,
performs a call and identification operation according to access requests of the portable-electronic-apparatus-possessing user.
Here, the portable electronic apparatus comprises memory means or storing specific codes assigned to at least one automatic identification apparatus, a user access code and password, a receiver for receiving a wireless call signal, a transmitter
for transmitting a wireless identification signal, and control means for generating the identification signal based on the user access code and password, if a specific code received in response to the call signal matches one of a plurality of specific
codes registered in the memory means.
The automatic identification apparatus comprises memory means for storing user access codes assigned to at least one portable electronic apparatus, specific codes and a user's password, a detector for detecting the approach of a mobile object in
possession of a portable electronic apparatus, a transmitter for transmitting a wireless call signal, a receiver for receiving a wireless identification signal, and control means for generating the call signal based on the specific code in response to
the detection signal, and for generating a control signal if a user access code received in response to the identification signal matches one of a plurality of user access codes registered in the memory means.
Thus, using the system of the present invention, if the mobile object having the portable electronic apparatus is accessed to the automatic identification apparatus, since an automatic identification operation is performed by the automatic
identification apparatus which mutually responds with the portable electronic apparatus, both hands of the user are tree.
The system of the present invention can embody a prepaying system by storing data corresponding to an amount of prepaid money into the memory means of the portable electronic apparatus, subtracting cost data calculated and transmitted by the
automatic identification apparatus from the stored data, and updating that data with the subtracted result which becomes the new amount of prepaid money. Thus, all the identification systems can be integrated, and controlled with a single portable
electronic apparatus. That is, the user's secret access codes are registered in his household's electronic opening and closing apparatus, the start-up devices of various electronic products (e.g., personal computer, etc.), the door locks of his vehicle,
fee-levying control apparatuses adapted to toll gates for highways, bridges, tunnels, etc., parking lots, and the paid attendance control apparatuses of cafeterias, movie theaters, etc. Here, individual fees and the specific codes of the corresponding
automatic identification control apparatuses are registered in the portable electronic apparatus, enabling fully integrated application. Also, the system of the present invention simultaneously makes inquiries as to the credit status of the user, and if
the control apparatus is connected with a bank's on-line computer or that of a credit card company, automatic cash and credit purchases and an automated bank deposit-and-withdrawal transaction system are thus enabled.
There is also provided an automatic identification control method for an electronic identification system having remote automatic response capability comprising the steps of: (1) transmitting a call signal on which a specific code is loaded in
response to an initial enable signal; (2) transmitting an identification signal on which a user access code corresponding to the specific code is loaded, if the specific code detected via the call signal matches one of a previously registered, plurality
of first specific codes; (3) determining whether a user access code detected via the identification signal matches one of a previously registered, plurality of second specific codes; and (4) transmitting and receiving an instruction and data, after
mutual identification by way of steps (1), (2) and (3).
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of an electronic identification system having remote automatic response capability according to the present invention.
FIG. 2A through 2E are views showing various embodiments of the portable electronic apparatus shown in FIG. 1.
FIGS. 3A and 3B are diagrams for explaining signal formats of call and identification signals used in connection with FIG. 1.
FIG. 4 is a diagram showing a key matrix of the input means of FIG. 1.
FIG. 5 is a view showing a memory map for a storage means in the portable electronic apparatus of FIG. 1.
FIG. 6 is a view showing a memory map for a storage means in the automatic identification control apparatus of FIG. 1.
FIG. 7 is a flowchart diagram for explaining the mutual registration procedure of the system according to the present invention.
FIG. 8 is a block diagram of one embodiment of the portable electronic apparatus of FIG. 1.
FIG. 9 is a block diagram of one embodiment of the automatic identification door opening/closing device according to FIG. 1.
FIG. 10 is a circuit diagram of the transmitter/receiver shown in FIGS. 8 and 9.
FIG. 11 is a view for explaining the detector of FIG. 9.
FIG. 12 is a flowchart diagram for explaining a control program for FIG. 8.
FIGS. 13A-B are a flowchart diagram for explaining a control program for FIG. 9.
FIG. 14 is an operational mode diagram for explaining a mutual communication procedure between a number of the automatic identification door opening/closing devices and a portable electronic apparatus.
FIG. 15 is a view for explaining a passage restriction relationship according to access level assignment, which is applied to the automatic identification door opening/closing device of the present invention.
FIG. 16 is a block diagram of the automatic identification door opening/closing device having a passage control function of the present invention.
FIG. 17 is a view showing an example of the attendance record table output from the printer of FIG. 16.
FIG. 18 is a view for explaining an attendance control system being one embodiment of the present invention.
FIGS. 19A and 19B are a perspective view and a block diagram of the cash registering device being one embodiment of the present invention.
FIG. 20 is a flowchart diagram for explaining the cash-registering procedure of FIGS. 19A and 19B.
FIG. 21 is a flowchart diagram for explaining the prepaid fee-levying procedure being another embodiment of the present invention.
FIG. 22 is a view for explaining the toll gate fee-levying system being still another embodiment of the present invention.
FIG. 23 is a flowchart diagram for explaining a mutual communication relationship between an automatic identification control apparatus and the portable electronic apparatus of FIG. 22, for entering.
FIG. 24 is a flowchart diagram for explaining a mutual communication relationship between an automatic identification levying control apparatus and the portable electronic apparatus of FIG. 22, for exiting.
FIG. 25 is a view for explaining the automatic identification credit transaction system being yet still another embodiment of the present invention.
FIG. 26 is a flowchart diagram for explaining a mutual communication relationship between the automatic identification credit transaction system and the portable electronic apparatus of FIG. 25.
FIGS. 27A and 27B are a perspective view and a block diagram of the automatic banking system being still yet a further embodiment of the present invention.
FIG. 28 is a flowchart diagram for explaining the operation of the automatic banking system of FIGS. 27A and 27B.
FIGS. 29A through 29F are diagrams which show various display states of the CRT of FIGS. 27A and 27B.
BEST MODE FOR CARRYING OUT THE INVENTION
The preferred embodiments of the present invention will be described below in more detail with reference to the accompanying drawings.
FIG. 1 is a block diagram of an electronic identification system having remote automatic response capability according to the present invention. In FIG. 1, a portable electronic apparatus 100 comprises input means 110, control means 120, storage
means 130, receiving means 140, transmitting means 150 and display means 160. Automatic identification control apparatus 200 comprises input means 210, control means 220, enable means 230, transmitting means 250, receiving means 260, drive means 270,
operation detecting means 280 and alarm means 290.
Input means 110 of portable electronic apparatus 100 comprises a key matrix circuit for performing user password and mode selection, and power-on and power-off functions.
Control means 120 comprises a microcomputer, a control program ROM, a SRAM and DRAM for data storage, a clock generator circuit and a piezoelectric device for generating an audible alarm signal.
Storage device 130 comprises a non-volatile memory, that is, a EEPROM for storing the user's password and access code, specific codes pertaining to the particular automatic identification control apparatus' registration, and other data.
Receiving means 140 comprises a radio demodulation circuit or a light-receiving circuit for receiving a modulated RF or IR call signal, and detecting the specific codes and data loaded on the call signal, which are transmitted from the automatic
identification control apparatus.
Transmitting means 150 comprises a radio modulation circuit or a light-modulating circuit for modulating the user's access code and specific data, and transmitting an identification signal.
Display means 160 comprises a display device (LCD, LED, etc.) and the LCD or LED driver, or displaying data according to the key operation of input means 110, and data or an operating state according to the processing results of control means
120.
Portable electronic apparatus 100 may comprise an IC card interface circuit for bi-directionally communicating with the existing IC card, and may also comprise an input and output interface circuit for bi-directional communication with a personal
computer. Here, portable electronic apparatus 100 further comprises a primary or secondary battery cell and a power supply check circuit therefor; these however are not shown in FIG. 1.
Portable electronic apparatus 100 may be in the form of a ball-point pen (FIG. 2A) for convenient carrying, a business-card-sized card (FIG. 2B), a wristwatch (FIG. 2C), a jewelry item, e.g., pendant (FIG. 2D), stickpin or broach, or a belt
buckle (FIG. 2E). To facilitate miniaturization of such a portable electronic apparatus, that is, in the case of the ball-point pen, necklace or belt buckle, only four input keys are necessary. Here, when an UP (U or .uparw.) or DOWN (D or .dwnarw.)
key are pressed, an LCD panel scrolls through figures and/or characters, and a set key is pressed when the desired display appears, thus selecting an input. (If wrongly set, a cancel key is pressed.) When all the desired data has been input, a
registration key is pressed, to thereby lock-in the displayed input data for transmission to the internal control means.
As shown in FIG. 2B, portable electronic apparatus 100 can have a function select switch for various modes: electronic calculator (CAL), clock (OFF) and identification (ID). Also possible but not depicted, portable electronic apparatus 100 may
be connected with a beeper, cellular phone or miniature FM receiver.
Input means 210 of automatic identification control apparatus 200 comprises a key matrix circuit having digit keys and various mode keys.
Control means 220 comprises a microcomputer, a control program ROM, an SRAM and DRAM for data storage, a clock generator circuit and a piezoelectric device.
Detection means 230 comprises a detecting circuit having a proximity sensor such as an infrared light sensor or a supersonic wave sensor for detecting the approach of a mobile object carrying portable electronic apparatus 100, for example, a
human being or automobile.
Storage means 240 comprises a non-volatile memory, that is, an EEPROM for storing the administrator's password and specific codes, user registration codes, and other data.
Transmitting means 250 comprises a radio modulation circuit or a light-modulating circuit for modulating a specific code and data, and transmitting the modulated signal as a call signal.
Receiving means 260 comprises a radio demodulation circuit or a light-receiving circuit for receiving a modulated RF or IR identification signal, and detecting the user's access code and specific data.
Driver means 270 comprises a driver circuit for driving the equipment to be operated in response to a control signal which is generated when user access codes are received by control means 220 and match a registered user's code.
Operation detection means 280 is connected with driver means 270 or directly to the equipment to be operated, and comprises an operation detection circuit for detecting the operating state of the driven or operated equipment.
Alarm means 290 comprises an alarm generating circuit and a misoperation indicating circuit for generating an audible and/or visible alarm to signal the improper operation of the equipment to be operated or the access of an unregistered
(unauthorized) mobile object.
Automatic identification control apparatus 200 is connected with predetermined equipment to be operated according to installation locations. For example, for installation at a main entrance, automatic identification control apparatus 200 is
linked with an opening and closing mechanism and an intercom, and for use with an electronic product, say, a computer, it is tied to a lock-out or start-up device. Further, if automatic identification control apparatus 200 is to be used in conjunction
with a paid attendance control system (cafeteria, movie theater, etc.), it may be interfaced with a turnstile. Other interconnection examples include that for toll gate systems, e.g., toll roads, tunnels, bridges, etc.
Automatic identification control apparatus 200 can also be connected with a camcorder, to photograph vehicles and their passengers.
Also, automatic identification control apparatus 200 comprises a display means (e.g., LCD, LED, etc.) to display data and operation state, or comprises an I/O interface means to enable bi-directional communication with a computer. Also, to
miniaturize the portable electronic apparatus according to the present invention, the input means of the portable electronic apparatus can be omitted. Instead, the necessary information can be input via the input means of the automatic identification
apparatus, to then write the necessary information to the portable electronic apparatus via the transmitting and receiving means.
FIGS. 3A and 3B show the structures of a call signal CAS and an identification signal IDS, respectively. Call signal CAS is a signal obtained from the modulation (RF or IR) of start signal ST, a specific code XC, user secret code USC, data DT,
and an end-of-data signal ED. Similarly, identification signal IDS is a signal obtained from the modulation (RF or IR) of start signal ST, user secret code USC, address ADD, data DT, and an end-of-data signal ED. Here, the CAS and IDS signals may be
encoded and error-correction-encoded during transmission, and decoded and error-correction-decoded during reception, via well-known methods.
In RF-transmitting and RF-receiving the above call and identification signals, a subcarrier frequency on the order of hundreds of megahertz is used, in consideration of the miniaturization of portable electronic apparatus 100. For this purpose,
internal transmission and reception loop antennas are desirable and formed of copper film on printed circuit board. When these signals are communicated via light transmitting and receiving apparatuses, a light modulation method for driving a
light-emitting device can be used, in which the switching of a 40-50 KHz oscillator is performed according to a data train.
The registration procedure of the specific codes and the user's secret access code (USC) adapted in the electronic identification system having remote automatic response capability according to the present invention as described above will be
described below with reference to FIGS. 4 through 7.
As shown in FIG. 7, a user possessing portable electronic apparatus 100 of the present invention inputs a manufacturer- or dealer-determined initial user password IUPW through input means 110 having key input means shown in FIG. 4 or FIGS. 2A-2E. Then, control means 120 of portable electronic apparatus 100 compares the input IUPW data with the previously stored IUPW data in a memory region of storage means 130 shown in FIG. 5, and if they match, an "enable" indication appears on display means
160. The user then inputs his own personal password UPW data through input means 110. Subsequently, when an "UPDATE" key is pressed, control means 120 deletes the IUPW data stored in a first memory region 131 of storage means 130 and writes the UPW
data therein. When the user inputs his personal identification UPC data (e.g., ID number, vehicle number, bank account number, health card number, etc.), and then presses a "REGISTRATION" key, control means 120 sequentially writes the user's UPC data in
a second memory region 132 of storage means 130. Here, the user can cancel the input data by pressing a "CANCEL" key prior to pressing the "UPDATE" or "REGISTRATION" keys during the UPW-updating or UPC-writing procedure.
On the other hand, also shown in FIG. 7, in a similar method to that of portable electronic apparatus 100, the system administrator, being in possession of automatic identification control apparatus 200 of the present invention, inputs the
administrator's password data APW and specific code data XC using an initial administrator's password IAPW, in a first memory region 241 and a second memory region 242 of storage means 240, as shown in FIG. 6. If the user presents portable electronic
apparatus 100 to the administrator after inputting his password, i.e., enabled, and informs the administrator of the necessary UPC data, the administrator inputs XC data identical to that written in automatic identification control apparatus 200 through
input means 110, and presses a "REGISTRATION" key. Then, control means 120 of portable electronic apparatus 100 writes the input specific code data XC.sub.1 in an address UPPP of a third memory region 133 in storage means 130. Also, the administrator
inputs the user-supplied UPC data through input means 210 of automatic identification control apparatus 200, and presses the "REGISTRATION" key. Then, control means 220 of automatic identification control apparatus 200 writes the input personal
identification data UPC.sub.1 in an address MGGG of a third memory region 243 in storage means 240. After completion of the above operation, and the administrator has returned the XC-data-written portable electronic apparatus 100, the user presses the
"REGISTRATION" key and sets a registration mode. Then, if the user takes a thus-set portable electronic apparatus 100 and approaches automatic identification control apparatus 200, the identification control apparatus detects the user's approach through
detection means 230, and transmits a first call signal CAS through transmitting means 250. Control means 120 of portable electronic apparatus 100 compares the detected XC data from first call signal CAS received through receiving means 140 with the
written XC data. If the detected XC matches the written XC, corresponding UPC data is read out from storage means 130, to be transmitted with a registration instruction signal RIS and the address data UPPP of XC.sub.1 as a first identification signal
IDS via transmitting means 150. Control means 220 of automatic identification control apparatus 200 compares the detected UPC data from first identification signal IDS received through receiving means 260 with the written UPC data. If the detected UPC
matches the written UPC, the registration instruction signal (RIS) is decoded, and the received UPPP data is written in an address MFFF of third memory region 243 in storage means 240 in connection with address MGGG where the UPC data is stored. By
doing so, the user's secret code USC is registered, thereby transmitting the XC, UPPP and MFFF data as second call signal CAS via transmitting means 250. Control means 120 of portable electronic apparatus 100 reads out the XC.sub.1 data located in
address UPPP of storage means 130, using the UPPP data detected from second call signal CAS received through receiving means 140. Here, if the read XC.sub.1 matches the received XC, the received MFFF data is written as the user's secret access code
USC.sub.1 in address UPPP+XXX of a fourth memory region 134 of storage means 130. Accordingly, registration of a user's secret code USC (access code) and his specific code XC is accomplished. Then, a second identification signal, that is,
IDS=UPPP+MFFF+reception confirmation signal (ACK), is transmitted through transmitting means 150 and the program terminates. Automatic identification control apparatus 200 receives the second identification signal and confirms if the registration
procedure is accomplished, which also terminates the program.
As described above, in the present invention, portable electronic apparatus 100 is mutually communicated with automatic identification apparatus 200, and in so doing, registration of both the final specific code (XC) and the user's secret access
code (USC) is performed. Therefore, a user cannot recognize specific codes of the control apparatus, nor can an administrator recognize the secret user-access codes. Thus, fraud on the part of the user or the administrator can be prevented to guarantee
security and safety.
Also, the corresponding memory region is directly addressed by the received address information, without the need for searching specific codes or user access codes, due to registration of both the portable electronic apparatus numbers and the
automatic identification control apparatus numbers. Accordingly, real-time processing can be performed without slowing the memory access time.
Operation of the present invention in which the specific code and the user's secret access code are registered as described above, will be described below by way of various embodiments.
DOOR LOCK SYSTEM
Referring to FIG. 8, one embodiment of portable master key 100 according to the present invention comprises: input means 110 having key matrix 110a and interface circuit 110b; control means 120 composed of a microcomputer; storage means 130
composed of a non-volatile memory such as a EEPROM; receiving means 140 having a high frequency amplifier 141, a local oscillator 142, a frequency converter 143, an FM discriminator and filter portion 144, and an inverting amplifier 145; transmitting
means 150 having a high frequency oscillator 151, an oscillator 152, an FM modulator 153 and an intermediate frequency amplifier 154; and display means 160 having a liquid crystal display 160a and an interface circuit 160b.
Receiving and transmitting means 140 and 150 comprise a serial-to-parallel converter 140a for serially receiving the specific code data detected from the call signal which has been received and amplified and converting the serial data into
parallel data to supply it to microcomputer 120, a parallel-to-serial converter 150a for receiving in parallel the user's secret code data and instruction data output from microcomputer 120 and converting the parallel data into the serial data to supply
it to transmitting means 150, and switching means 170 for performing a switching so that power supply voltage Vcc of a battery cell is supplied to transmitting and receiving means 140 and 150 in response to power supply control signal PW of microcomputer
120. The user's secret code, the user's password, and the specific code and the instruction code of the automatic identification door opening and closing device are stored in the EEPROM being storage means 130. Serial-to-parallel converter 140a and
parallel-to-serial converter 150a may be composed of one common serial-to-parallel converter in which the input and output are reversed and controlled according to the states of reception and transmission. Transmitting and receiving means 140 and 150
may adopt a known FM-receiving circuit having a 300-900 MHz subcarrier. Display means 160 displays the input state of input means 110 on an LCD panel or the operating state of the opening and closing mechanism performing transmission and reception
response using the call signal and the identification signal.
Referring to FIG. 9, one embodiment of automatic identification door opening/closing device 200 according to the present invention comprises input means 210 having a key matrix 210a and an interface circuit 210b; control means 220 composed of a
microcomputer which can function as a clock; detection means 230 having first and second external sensors 231 and 232 and first and second internal sensors 233 and 234 for sensing the approach of a mobile object; storage means 240 composed of a
non-volatile memory such as a EEPROM; transmitting means 250 having a high frequency oscillator 251, an oscillator 252, an FM modulator 253, and an intermediate frequency amplifier 254 for transmitting a call signal; receiving means 260 having a high
frequency amplifier 261, a local oscillator 262, a frequency converter 263, an FM discriminator and filter portion 264, and an inverting amplifier 265 for receiving the instruction signal, equipment to be operated 270 having an interface circuit 270a and
an driver circuit 270b; and alarm means 290 having an alarm circuit and speaker.
The embodiment of automatic identification door opening/closing device 200 according to the present invention also comprises a system enable switch 221, a serial-to-parallel converter 260a, a parallel-to-serial converter 250a, and operation
detection means 280.
Detection means 230 detects the approach of a mobile object and supplies a system enable signal to microcomputer 220 which thereby generates a power supply control signal PW to turn on switch 221. Accordingly, power supply voltage Vcc is
supplied to transmitting and receiving means 250 and 260. Transmitting and receiving means 250 and 260 are connected with microcomputer 220 through serial-to-parallel converters 250a and 260a.
Storage means 240 composed of the EEPROM stores the user access code of at least one portable master key, the specific code, the administrator's password, and data establishing the in and out times of persons. Driver circuit 270b conventionally
drives a solenoid and electronically controls the opening and closing operation for the door. Also, a motor driver circuit may be adapted as driver circuit 270b, for controlling the opening and closing of the door via a motor. Operation detection means
280 monitors the opening and closing state of the door to supply the detected state to microcomputer 220. Here, a switching state detection circuit by which the switching of a solenoid is sensed to thereby detect an operating current/voltage change in
the solenoid, may be used as the operation detection means.
FIG. 10 shows one embodiment of the FM transmitting and receiving circuit of FIGS. 8 and 9, which is well-known. Thus, explanation of its detailed construction and operation will be omitted.
FIG. 11 shows one embodiment of detection means 230 adapted in the present invention. First and second outer detection areas OA.sub.1 and OA.sub.2 of first and second external sensors 231 and 232 for detecting the approach and presence of
persons wishing to gain entry, as well as first and second inner detection areas IA.sub.1 and IA.sub.2 corresponding to first and second internal sensors 233 and 234 for the likewise detection of an exiting person, are established as shown in the
drawing. Thus, the approaching subject, while in possession of a portable master key, desires entry through the door, his access status is first detected by first external sensor 231 and then by second external sensor 232, thereby determining access
status. First and second internal sensors 233 and 234 operate similarly for exiting from the inner areas.
Operation of the present invention as described above will be described below with reference to FIGS. 1, 8 and 9.
First of all, the combination of a user's secret access code and a specific code supplied by the manufacturer or dealer is assigned to portable master key 100 and automatic identification door opening/closing device 200. That is, both the access
code of the bearer of portable master key 100 and the specific code of the door to be accessed are written in the portable master key, while respective user access codes of all those permitted access are written in automatic identification door
opening/closing device 200. When the user inputs his password through input means 110, control means 120 compares the input password with the stored password and determines whether they match, if so, the system is enabled. (Thus, even if the portable
master key is lost, it is useless unless the password is identified.) In a thus-enabled portable master key, switching means 170 is turned on to supply power to transmitting and receiving means 140 and 150, so that signal transmission and reception is
possible. Once portable master key 100 has been enabled, if the user wishes to gain access to the door, hi | | |
