SE522742C2 - Methods and apparatus for utilizing mobile radio telephones for control and / or control purposes - Google Patents

Abstract

A method and a device for utilization of mobile radio telephones for surveillance and/or control purposes in which a radio unit (3) for reception of signals from mobile radio telephones is arranged to be activated in a first step by an incoming signal from a mobile radio telephone, as a second step analysing the first part of received signal with regard to the PIN/SIM number (or corresponding) and/or inputted call number during the handshaking procedure between the mobile radio telephone and an associated base station for comparison with preprogrammed corresponding information, and as a third step, when correspondence has been established, initiate preprogrammed procedures and/or actions, and if non-correspondence is established return to "resting" and non-activated condition pending a signal inputted from a mobile radio telephone. The receiving radio unit (3) is preferably performing a scanner function in "resting" condition with regard to within the geographical area utilized frequencies for mobile telephones, and performs a locking operation to the frequency for an incoming signal, maintaining this locking when approval for the third step is established, and returning thereafter, as well as when non-acceptance is established during the second or third step, to "resting" function with scanning of the frequencies. The reception range for used radio unit (3) is preferably maintained restricted during the first and second step, and extended during the third step, whereby reception of called subscriber can be accomplished from the base station communicating with the mobile radio telephone.

Description

522 742 2 It is also an intention of the present invention to provide mobile telephones existing "out there" with the desired possibility of visitor control / intercom features at a property with the previously mentioned installation.

These and other objects, advantages and features of this invention are achieved in part by the use for this particular purpose of corresponding to (for the present purpose, however, preferably specially adapted devices) known as "scanner (s)", which now also e.g. covers the entire "GSM" area with interception capacity. Only receiving capacity for a scanner is required; since its communicating properties according to the present invention are only used as a "passive" listener of data, it thus does not require analogue sound, nor transmission capability.

Since these said scanner devices are recipients only, they do not require a permit or license to possess and use, nor are there any laws against their use that prevent use in technical solutions such as this, nor are there any usage fees, formal approvals or the like. . For analogue radio telephones, such as NMT, it is only standard radio reception, while for digital networks, such as GSM, some signal processing must, as before, be performed. Without intending to limit the invention (NMT and other "analog" standards are on the way out, as well as "satellite" (lRlDlUM), "broadband", "dual mode", "multi mode" and other "digital" standards are increasing), the invention comes hereinafter to be described with respect to one embodiment, use with digital wireless communication systems designated "US PCS 1900", "JAPAN PHS", "DCS 1800", "CT-2", "CT-2-CALL", "CT-3 And "DECT" and / or digital cellular communication systems designated "IS-54B (ADC, D-AMPS, CDMA, IS-136)" in the United States, JDC in Japan and the global GSM networks. The "scanning" radio receiver part of the present invention recovery must therefore be able to handle the most common mobile phone systems in its field (and possibly allow upgrading to future specifications), but for a simplified and non-limiting production, GSM has been chosen. GSM is a common standard for mobile phones. with so-called "protocols", so utn a format called MultiCarrier (MC) / Time Division Multiple Access (TDMA) / Time Division Duplex (TDD) is used for radio communication between the devices, such as mobile phones, and base stations, which are usually connected to a public telephone network. Mobile radio telephony is referred to certain specific frequency ranges for communication, and the mobile telephones transmit and receive at different frequencies (cellular) or "time slots" (DECT) to ensure speech with "full duplex".

The method according to the present invention is characterized mainly by the features stated in the following claim 1, as well as associated subclaims, and the device for practicing the method is described in claim 5 and the subclaims associated with this patent claim. 522 742 3 Since mobile telephony is radio communication, it can be intercepted by devices known as scanners, which work with continuous scanning of line frequency spectrum or selected parts thereof, and which detect and "lock" on active channels, and emit captured sound to a listener. In the case of analogue radio, the communication is emitted immediately intelligible, but in digital radio communication, such as GSM, only a meaningless sound is emitted, unless they are capable of performing speech and signal data processing with the same protocol as the intercepted signal uses. In the case of GSM, such scanners are today commercially available, which are also capable of detecting which number has been dialed at the mobile phone and also detect their individual and unique PIN / SIM numbers, especially in cases where a mobile phone is connected after being off, when "handshake" is performed with the subscriber's nearest base station is performed according to a few general protocols, whereby also used protocols for a subsequent call are revealed to the initiated listener.

Thus, although in the present invention it is technically possible to carry out scanning / "tapping" to the extent necessary with "switched on" mobile phones, it is preferred and described that a visitor should initiate the access control procedure by connecting a "disconnected" mobile phone in close proximity to the entrance to which access is desired, this has many advantages.

First, that the visitor's mobile phone is as close to the entrance as an intercom request situation must still be, before it can be detected, prevents all other persons connecting their mobile phones in a nearby area from addressing or initiating the system according to the present invention. The system's antenna can thereby be well shielded, with direct action and a short reception area.

Secondly, a "switched off" mobile phone that is switched on also acts as a starting and activating device for the system, apart from the fact that it generously gives away the protocols that enable "port calls".

The radio receiving "scanning" unit in the described system will, after activation, perform scanning of the assigned radio channel (frequency) for current communication and perform synchronization with transmitted time-divided TDMA packets. It can thus detect, decipher and process the number that the visitor will dial with the intention of fulfilling the request for access to the property. This number is typically the telephone number of a resident in the building in question. A programmable device, a “number discriminator”, compares this number with programmed numbers - usually the telephone numbers of residents and / or other persons authorized to unlock the door - and if there is a match, the door lock is allowed to be received and activated on an opening command. If there is no match, and provided that the entered number was a telephone number, this results in a normal telephone call between the caller and the called party, while the described system, on the other hand, does not answer any control commands. On the other hand, if there is agreement, a call can be initiated between the caller and the caller (provided that an answer is received), whereby the caller can identify himself and ask for permission to enter, whereby the caller has the opportunity to admit this by to send adequate control signals back over the established switch - preferably in the form of a DTMF number sequence or code sequence - which can be sensed and decoded by the now locked, synchronized and listening scanner radio part of the system, which "listens" to all communication between affected parties (via the base station) ) and can thus, preferably for a predetermined period of time, detect DTMF signals and respond to them, as well as, since it may require valid DTMF signals to be in the correct frequency / time division, ensure that only the called party can deliver DTMF signals. signals that cause system effects. (Other protections may be to invalidate DTMFs that first appear at T-frequency, in the event of high feedback, echo or sidetrack; or a requirement of a certain dB level for approval). Since DTMF makes it easy to give countless different commands, other functions are also made possible in addition to opening a door lock, e.g. start-up of a TV camera, sounding of an alarm, connection of a light source, etc., by the influence of the called party, only by system programming and arranging associated hardware for such desired functions.

The system according to the invention thus works in synergy with the mobile telephone call, it does not participate in any telephone communication, in which it only acts as a passive listener and thereby, when it responds to stimuli from the same, does not affect the conversation itself; which is carried out and terminated (logically according to the intended execution) by interested parties, and in addition the call is free of charge for the property - normally the visitor is charged the call fee unless a 1-800 (toll-free) number is offered, in addition the need to provide a user interface disappears, such as keyboard , microphone and speakers - and the sound quality is usually excellent and suitable for use in an area with street noise. Since regular telephone numbers are used, no number list is required, and this favors welcome visitors, who usually know the person to be visited as well as their telephone number, as well as the need to bring a mobile phone. Since the described system has a number discriminator for storing different numbers, it can also offer code locking possibility, as is the case with previously known intercom systems. This is useful for residents, service staff, etc., as well as to allow residents who do not have a telephone the opportunity to let visitors in by giving them a door opening code. The system according to the invention can obviously comprise a keyboard, for input to a code lock, with this means additional hardware and an external user-influencing device which is sensitive to influence / vandalism. However, a number dialed from a mobile phone does not have to be a working / existing telephone number that is forwarded to the base station (or goes on the air). All numbers entered are transmitted by command, and by preferably beginning with a non-numeric part such as "*" or "#" it will, in the same way as described above, be reached and understood by the system described. corresponds to a number stored in the number discriminator for a specific code lock purpose, the intended function can be performed, in the same way and with the same advantages, eg time zones, as a code lock with a keyboard, even though no keyboard is present. Both residents and service personnel must carry mobile phones to be able to take advantage of this, but this can be outweighed by the cost and the benefits of security against the impact. In any case, when no telephone call arises, the use will be free. Another accessory in today's access system is often a card reader that allows people with valid cards to gain access, which in conjunction with a code lock provides different "levels" of security, n namely "short only", "code sequence" or "short-plus code sequence", except that it is smart, fast and convenient, especially for company staff. A system according to the present invention can of course be equipped with a card reader of a suitable type, but it can also use mobile telephones to achieve a corresponding function, without the need for any additional external user interface. Namely, when a GSM mobile phone is connected, during the initial handshake with the base station, it emits its own unique "PlN code" / SlM card "number (among other information necessary to reach the correct base station) in a format and according to a protocol that is If such a number is programmed and stored in the number discriminator as a valid "card code", then the mobile phone in this case works much like a "proximity card" and the system as a "proximity card reader" that reads the card without direct physical contact, whereby programming can be performed as "card only", or alternatively programmed as "card-plus code sequence" with wrapping of a subsequent code sequence. The same disadvantages and advantages exist as with the described keyless code lock, but a routine reading of the visitor's unique PIN / SIM code can also provide advantages such as an improved registration in a transaction memory for connecting any misuse to an identifiable visitor, even in normal port communication or code lock situations. down, which is otherwise totally impossible to track. You can also, especially in facilities with high security requirements such as military storage and the like, authorize only a few selected mobile phones for initiating communication or code lock opening, as well as the mobile phones that should be allowed to do what, and in addition possibly with selectively selected time zones, format changes, variable codes etc.

Since the described system would include a voice processing unit, mainly for detecting and deciphering DTMFs transmitted as voice data, it could theoretically also accept voice and voice commands for its functions / actions, but DTMF is assumed to be both simpler and better for the relatively receive tasks that an access monitoring system must be able to perform. Possibly, in order to increase security and usability, given commands may consist of longer DTMF code sequences, as well as different command codes for different dial-up residents (based on their different call numbers) for the same type of action activation, or for actions specific to certain residents only. , such as allowing an elevator to reach a certain floor, but usually only one or a few DTMF digits are needed to obtain sufficiently adequate signaling with adequate security, as they still have to emanate from the called party, among other criteria preferably within a given time frame. Although commercially available GSM scanners can be used for radio frequency scanning and reception, timing and synchronization, as well as signal / speech processing necessary for practicing the present invention, speech must never leave its digitized format to be converted analogously and audibly to a listener; each system function is preferably handled in digital format. Thus, when using such devices, a considerable part of their functions would not be utilized, but since they are available and can be used, this confirms that the described functions can be achieved in many different ways as well as through the use of standard components.

Programming of the system according to the invention can be performed in many different ways, e.g. in place through a serial interface and with a hand-held programming device or a PC, whereby when using a PC remote programming via modem is also possible. On site, the system can also receive DTMF or, if adapted for receiving it, data via mobile phone ("mobidata") such as programming commands, provided that someone (authorized, eg by PIN / SIM number) is on site and establishes a mobile phone call to the similarly authorized programming telephone, whereby the described system can intercept the communication between them and thus receive the correctly formatted programming instructions / commands. For tar programming purposes, it may also have a connection to a public telephone network, such as, for example, mobile phone subscriptions of the prepaid card type or the Internet, not used for voice communication, but possibly also useful for eg alarm transmission and monitoring / control purposes of functions within the building.

The lack of external physical user interfaces (apart possibly for the antenna, which can, however, be arranged hidden) results in a very safe and tamper-proof indoor installation and / or well-protected installation, as well as expensive parts, housings and design are eliminated. Normally only some instructions are required (which may, however, consist of an electronic display or equivalent, but again increase the costs and the risk of damage, but are still a possibility, as well as audio / voice synthesized instructions), and with an indicated area within which the mobile phone must be switched on, but even this is not absolutely necessary for an experienced user, whereby nothing is required that damages the appearance, integrity and security of a beautifully designed entrance, even though it is equipped with an access monitoring system. On the basis of a correct telephone number is entered and that the same is detected / approved by the number discriminator, the same can order the connection of a TV camera working on a channel in a TV cable system, and also through a secondary unit via the same cable either provide a general "Alert" to all televisions in the 522 742 7 building, or on the basis of the dialed number only to the party who has the said number, in order to clarify that the call that just gives the ring signal is an intercom call where the visitor can be seen on TV, even before the call is answered.

Some mobile phones use speech distortion in order to make calls more secure. Despite this, for handling all mobile phones within a certain area, the protocols for handshaking, entered phone number, radio transmission, etc. between the mobile phone and the base station must remain within a given standard. Only the speech is subjected to speech distortion and can only be received by another mobile phone with the same algorithm for speech distortion. However, extracting and decoding DTMF signals in the event of a speech-distorted data stream does not pose any major problems. Because these tone pairs are so typically configured and because they maintain the same frequency ratio even with speech distortion, they are easily recognizable as DTMFs and their specific relationship between the two frequencies identifies the number.

Dial-up signals and busy signals (call progress signals) can also be detected, as they are sent back to the dial-up telephone from the dial-up telephone side, and can also be sensed by the described system and used for additional purposes such as, for example, some existing intercom systems. the time period allowed for DTMF detection only after a response is received (the ringing signals cease); the time allowed for dialing (between the entered telephone number and answer) and possibly also to specify the time separately. Several of the above possibilities are stated only to indicate functions for meeting certain specific situations, requirements and / or constructive alternatives, and to provide a more general background to the following example of a non-limiting example of an embodiment according to the method of the present invention described. with reference to the accompanying drawings.

Brief Description of the Drawings Fig. 1 shows, in a schematic and illustrative manner, a digital data stream comprising juxtaposed data in a digital radio telecommunication system (in this case, for simplified production, DECT); Fig. 2 shows a simplified block diagram showing an example of a system according to the present invention; and Fig. 3 shows a fate diagram, illustrating the function of the system according to Fig. 2.

Detailed Description of the Preferred Embodiment Again, without limitation, the described embodiment will be related to the GSM standard, which, as previously discussed, is an MC / T DMA / T DD format for communication between mobile telephones (not shown) and base stations (not shown). Nor are all the possible answering telephones that can be reached through a call from a mobile telephone shown, which can be both connected to a fixed telephone network as well as being mobile telephones. Already earlier (on page 2), the closest Babylonian scenario with regard to available mobile systems has been briefly described. GSM today has the largest number of users, and this is the main reason why the same was chosen for the reported example. However, even this is relatively difficult to describe briefly. In order to simplify to illustrate some common principles for "digital" mobile telephones, Fig. 1 refers to DECT. DECT is assigned certain specific “frequency bands” for wireless radio communication and in which a number of “carriers” are available. Each carrier is divided into time ranges with twenty-four "time slots". Two time slots are used to create a duplex channel, which means that twelve voice channels are available within each carrier area. The twenty-four time slots were transmitted as so-called TDMA packets with packet cycle time TF of 10 ms.

A typical packet structure for a digital TDMA / T DD communication system is shown in Fig. 1. During the first half of the packet, i.e. the first twelve time slots denoted R1, R2. . . . R12, then data is received from the base station by the telephone unit, while during the other half of each packet, i.e. the other twelve time slots denoted T1, T2. . . . T12, the telephone unit sends data to the base station. A radio connection between a base station and a telephone unit is assigned a time slot in the first half of the packet and a time slot with the same number in the second half of the packet. Normally, each time slot includes synchronization data, control data, and digitized speech or user data.

Signal data, such as data referring to the calling party, the entered telephone number and call progress signals can be included in both control data and voice / user data.

Digital cellular systems must be even more complicated, but differ significantly from the above only in that they have different separate radio frequencies (carriers) for transmission and reception.

Fig. 2 shows a simplified block diagram of the described system 1, comprising four essential building blocks, i.e. a central controlling application-adapted logic unit 2, a radio unit 3, a temporal and synchronizing control unit 4 and a speech processing unit 5.

The radio parts comprise an atmospheric interface in the form of an antenna 6, connected to a radio unit 3 comprising a scanning "scanning" part and a receiver / demodulator.

Time adjustment on receipt is controlled by the time controlling unit 4, which, in the case of TDMA / TDD technology, handles synchronization of packets and time slots in a known manner.

The time reference is normally extracted from a synchronizing signal received by the antenna 6. Suitable for the invention, said antenna is only of the reception type, shielded and with direct action, so that it obtains a very short, narrow and defined reception range, within which it well receives radio signals. within the frequency band or bands used for mobile telephony within the installed area. During a first phase, which can be called the "resting phase", the antenna will thus in an ideal condition only be activated by signals from the predetermined range (which usually presupposes that some calibration has previously been performed on site, eg in connection with the system installation), but a near "ideal" ratio is also acceptable, due to the following protocols.During this phase, the antenna is connected to a scanning device, which forms the initial part of the radio unit 3. This scanning device scans during the first phase continuously current frequency band for a sudden appearance of a relatively strong radio signal at one of the frequencies, there being a reason for the preferred handling that a visitor should connect a "disconnected" mobile phone near the entrance to initiate the intercom procedure. When a mobile phone is "switched on", it starts at full power to ensure contact with a possibly remote base station (its output can also be relatively low in some places), and often this signal is then significantly weakened by instructions from the contacted base station at initial "Handshake", which also sets other parameters for current communication, followed by some initiating routines, or "protocols", which, given the general nature of the current situation, must be very general and regular and easy to ascertain. commercially available scanners are capable of reading this, and some can even intercept mobile GSM calls, without having monitored the handshake procedure.To perform this embodiment, such a GSM scanner would be luxurious, since no reproduction of speech is required, and most of the these GSM scanners are also designed to cover the entire radio spectrum, totally unnecessary in this case. A discrete circuit, LS1 circuit or some commercially available IC circuits would be more suitable for performing the functions described here, monitoring / "scanning" only within current narrow bands, as well as monitoring the handshake, and extracting only a few desired parameters from it. From a purely technical point of view, this can today be carried out in many different ways known to the person skilled in the art and with the use of commercially available standard components, so that a more detailed description of a certain design is not necessary and only constitutes an undeniable limitation. Again with reference to the "handshake", it means that the mobile phone also leaves out its PIN / SIM number, which, although not necessary for the application of the basic principle according to the present invention, can nevertheless be used for many interesting purposes, as before. described. However, as this constitutes an addition within the scope of the invention, no technical solution for extraction and use thereof is described, it is assumed sufficient to clarify that this can be technically easily carried out in various ways, and with the use of components adapted for the purpose. The only tasks that a "scanning" device according to the present device needs to do, after it is suddenly initiated in the manner previously described, are (if the previously described "proximity card" and / or the transaction memory option is used, to take care of the data which include PlN / SIM numbers or equivalent equivalents and ensure that these are brought to adequate processing) to connect another antenna (or antenna part) that enables reception at a long distance, which means that the base station can also be received as well as any weakened mobile phone signals, and to "lock fixed ”on assigned carrier and assigned time slots, and to transfer these to the more stable parts of the radio unit 3. The affected reduction / extension of the reception area can of course also be carried out in other ways, eg by using a switchable and switchable attenuator set. The system according to the invention now transitions to the "active" state, and returns to the "active" state. The condition after performing intended / ordered functions, or when disconnecting after a predetermined time period.

In the "active" state, no "scan" is performed, as only one visitor at a time needs to be treated at each entrance, but in properties with fl your entrances, scanning and associated procedures can be performed simultaneously at each not yet occupied entrance, with such satellite stations preferably through a "multiplex system" are subordinate to a central main unit, which can have the full processing capacity as well as the bulk of the hardware, thereby reducing the cost of installation.

The central control unit 2 receives data from the radio unit 3. Signaling and synchronizing information is removed from received data, and the resulting speech data is supplied to the speech processing unit 5, which provides for decryption of received data. It should be noted in this connection that according to the present invention, unless voice / voice data commands are used, preferably only DTMF signals are of interest, which are received in the speech tal of the party called by the telephone, and only after a valid / programmed telephone number has been beaten on the visitor's mobile phone; and that DTMF signals are relatively easy to recognize and decipher in a voice data stream. Thus, only received time slots with "R" number data (at DECT) or frequency (at cellular networks) need to be fed to the unit 5, which can be relatively simple in design, while the unit 2 suitably retains received "T" number data and also preferably all control data. for internal processing, preferably to obtain the number dialed at the visitor's mobile phone and which is transmitted after “handshake”.

Thereafter, this number can be compared with the numbers stored / programmed in the number discriminator 7 to clarify whether the prescribed conformity exists, and if not, the system can immediately return to the "viable" status. If a match is determined corresponding to a programmed "code lock number" (if this function is used), then for example a door lock can be opened immediately followed by a return to "dormant". If a match is determined corresponding to an authorized / programmed "answering phone number", the unit 5 is started in anticipation of incoming "R" number data and for sensing the DTMFs present therein, and if these are located within a predetermined time frame, corresponding to 522 742 11 to programmed criteria, the corresponding action can be performed. After completing the programmed operation, as well as upon receipt of an invalid number / code command and / or the end of the time-monitored period, the described system can return to "dormant". In the case of multi-carrier / multi-time slots as in GSM, the central control unit 2 normally also controls the different combinations of carrier frequencies and time slots in a known manner. To minimize necessary components, the unit 2 of the present invention can be configured in such a way that it helps the “scanner” to lock on assigned carriers / time slots. According to the described embodiment, the control unit 2 is arranged to process received signaling information in order to decrypt transmitted keyed number from a mobile telephone at the gate, comparison with programmed / stored numbers, for a possible implementation of measures depending on the mandate given to the current number. This is done by the schematically indicated number discriminator designated 7. It should be noted that the number discriminator 7 can be integrated with the control unit 2 and in addition can essentially consist of a microcontroller adapted for the purpose, which in addition can be integrated with the control unit 2 and perform substantially all desired processing steps. It here comprises an operational memory in which its operational program is stored. In addition, it also has memory means containing data for a number of processing logarithms, for example adapted to the type of signaling information which must be interpreted for a given purpose. These processing logarithms are obtained and processed together with received signaling information for an instructed measure. The memory device also provides the possibility of custom and / or personal user programming (which, however, for high security applications, such as military applications, may include memory components they can not be reprogrammed by an "outsider"), such as programming / storage of desired actions, selection of processing algorithms. more from system users depending on the wishes and circumstances, and / or programming of user-specified data, such as telephone numbers, code lock numbers, "proximity card" numbers; if and how this data should interact; DTMF numbers / codes to be used for instructions from the answering the telephone, etc., as well as temporal data, eg parameters related to time periods during which certain functions are allowed / not allowed. In order to allow maximum utilization of these possibilities, at least one serial port and a real-time clock are advantageously provided.

In addition, the system 1 may comprise a keyboard 8, an additional card reader 9 and an additional display device 10. It is fed from a power source 11, and is shown connected to a door lock 12 for actuating the same. It is also shown connected to a block 13, which is intended to indicate a number of possible controlled additional options, e.g. a TV camera, a device for advertising a visitor via a TV cable network, a light source, or any other device / procedure. According to the present invention, and as shown in Fig. 3, block 14, the described embodiment is normally in a "dormant" state, which means that it continuously "scans" for a sudden and sufficiently strong radio signal within current frequency bands, blocks 15. If such is found, the "scanning" operation stops, the range of the receiving antenna is increased and the implementation of the initiating functions, the "handshake", between the mobile phone and the base station is monitored, possibly the mobile phone PIN / SIM number is obtained (if used), but more specifically, when the carrier is used and the time slots allocated for intercepting started communication are locked, block 16. Block 17 indicates a possible included measure, namely a question whether a PIN / SIM number has been detected.If the answer is "yes", the same thing happens. to block 18 (to which also entered information from a possible card reader can be transferred) in order to initiate an associated predetermined to which is not described in more detail here, but unless it is a measure of the type "only short", the fate of the operation must now go back to the "no" fate "from block 17 to block 19, which, during a set period of time, asks whether any number has been entered / transferred from the current mobile phone. If the answer is "no", the system returns to block 14. If, on the other hand, the answer is "yes", it is transferred to block 20, where the number is decrypted and then transferred to block 21 (to which also entered sequence from a possible keyboard can be added) , which determines if the received number corresponds to a number programmed in the number discriminator 7 as a "code lock number fl and if the answer is" yes "it is passed to block 22 where the number is used to initiate the intended arbitrary predetermined function, which is not described here, but whose implementation may result in system 1 being reset and returning to block 14, however, for some applications block 25 may be affected.If the answer is “no” at block 21, then the number proceeds to block 23, which determines whether the number is a telephone number programmed into the number discriminator 7 as a number which at the current time is authorized to control any associated functions / measures at the property . If the answer is "no", then the system is reset by returning to block 14. If the answer is "yes", then the operation över passes to block 24, where the speech processing unit 5 begins waiting to receive "R" voice data (ie answering the telephone call). ), and if this occurs, sensing and deciphering any DTMFs therein for a predetermined period of time for this purpose. At "no" the system 1 is reset and returns to block 14, while at "yes" the decrypted digit / numbers are transferred to the number discriminator 7 and the operation flow passes to block 25, in which the number discriminator compares received digits / codes with stored / programmed telephone numbers, commands, time zones, etc., to determine programmed action for given command, unless such conformity is determined, i.e. "no", then system 1 is reset with return to block 14; if, on the other hand, conformity exists, i.e. "Yes", then the corresponding action is performed; such as typical door lock opening (with unlocking indicated by "click" and / or LED), after which system 1 is reset back to block 14 (block 26).

The foregoing description is merely intended to be an illustrative description of an example of an embodiment of the present invention. The way in which the described system performs monitoring, sensing and identification of activity as well as signals from a mobile telephone's connection to a base station, as well as performs actions associated with associated received commands, can today be solved in various ways and by using commercially available components. embodiments were not anticipated as necessary.

Those skilled in the art can, on the basis of a description, easily determine alternative embodiments which allow a functionality corresponding to the described embodiment and without departing from the fundamental principles or the scope of the invention. As an example, previously described "scanner function" can be replaced by a device that more "stationary" monitors carriers / frequency bands, in addition, already "connected" mobile phones can be "dropped" on transmitted number, and also more remote phones in conjunction with one and the same type of antenna systems in some cases can be used and / or start-up of the system can be performed by another body, such as a push button next to the port Mobile phones using systems other than GSM can be used, many different processing algorithms / routines can be used to meet different needs , and other command types than DTMF can also be used, such as voice, mobidata, mobitext can be used.Use of a custom GSM scanner has been discussed before.As for possible suitable components, for example Siemens provides a GSM module, which, however, has unnecessarily many functions for this purpose, thus it also handles transmission, microphone, speakers, CODEC / DA converters, etc., which not used in accordance with the present invention. For the same reason, the so-called GSM circuits from i.a. Philips and Mitel are too advanced, although possibly a few such circuits can possibly be used cost-effectively. With regard to microcontrollers, the Dallas DS2250 (T) -64 has, for example, 64Kb RAM (non-volatile) for programs and / or data storage, and the circuit also includes a serial port with full duplex and real-time clock, which is thus more than enough for embodiment described here.

The present invention can also be used for purposes other than controlling a property, e.g. for car parking, access to computers or machines, rental cars, vending machines for purchasing or issuing driving licenses and the like, ATMS, for "remote control" of car lock alarms, etc. In the latter application, for example, in addition to previously described radio communication can also in some cases infrared (IR ) communication constitute an alternative, as modern mobile telephones are often arranged to allow such communication within the vicinity of the mobile telephone. Even before other applications, IR communication can be an alternative, and such communication is therefore included in utilized embodiments where the term radio communication has been used.

The described example of an embodiment and the stated examples of areas of use thus do not in any way constitute a restriction in relation to the concept of invention and the method and device as defined in the appended claims.

Claims (10)

522 742 11! PATENT REQUIREMENTS 1. Methods of using mobile radiotelephones for control and / or control purposes, characterized in that a receiver for receiving signals from mobile radiotelephones is arranged to perform a scanner function in a “dormant” state with respect to within the current geographical area. used frequencies for mobile radiotelephones, and as a first step being activated at a signal coming from a mobile telephone and performing locking at the frequency of the incoming signal, to analyze as a second step the initial part of received signal with respect to the mobile phone's PlN / SIM number (or equivalent) and / or entered call number for comparison with pre-programmed equivalents, and as a third step in conformity initiating the implementation of pre-programmed procedures and / or influencing predetermined devices, and in case of non-compliance return to the "dormant" and non-activated the mode of awakening on one from a cell phone ink ommande signal. 2. A method according to claim 1, characterized in that the reading at the frequency of an incoming signal is also maintained during approval for carrying out the third step, and that the receiver thereafter, as well as in the case of a non-approval during the second or third step , returns to the "dormant" function with scanning of current frequencies. 3. A method according to claim 1 or 2, characterized in that the geographical extent of the reception area for utilized receivers is maintained limited during the implementation of initial steps, and that the reception area is subsequently expanded, preferably with the intention of also enabling reception of the base station whereby current mobile radio telephone communicates. 4. A method according to any one of claims 1 - 3, characterized in that used mobile radiotelephone from disconnected position is switched on within the receiver's coverage area for initiating a handshake procedure with a nearby base station, which through said extended coverage area can be intercepted by the receiver. Device for practicing the method of using mobile radiotelephones for control and / or control purposes according to any one of claims 1 - 4, characterized in that it comprises a receiving radio unit (3) with associated receiving antenna (6), preferably with a scanning scanner function. , for receiving the frequencies used in the current geographical area for mobile radiotelephone communication, arranged to transmit a received signal to a central control unit (2) and a time synchronizing unit (4) for monitoring nn .nu vn un u »u en o. none oooaoovuvaru .nnonvn nu u:. n a n g u u »o a u u u n n u. .fn a. o v: oo n o Ian 0 0 v u c .u o. cuuononnuunp en o: un: nn un »/ S 'and decryption of completed handshake procedure between the mobile radiotelephone and an associated base station and thereby communicated PlN / SIM number or equivalent and / or from the mobile radiotelephone transmitted call number, in accordance with corresponding stored tasks are arranged to entail initiation of a predetermined process or action, as well as otherwise return to "dormant" and intercepted states pending a renewed input signal. Device according to claim 5, characterized in that the receiving radio unit (3) is arranged with a limited geographical reception area, and that said reception area is extended by determining an incoming signal as a call to a pre-programmed subscriber, and that the radio unit thereafter during a preferably predetermined period of time, the called subscriber's communication channel listens via a voice processing unit (5) for pre-programmed commands in the form of preferably DTMF signals, receiving such an approved command entails carrying out the associated predetermined procedure / action, and otherwise returning to "rested" and condition in the wake of renewed input signal. Device according to one of Claims 5 and 6, characterized in that the central control unit (2) is also connected for actuation by a user-actuable physical input means, such as, for example, a keyboard (8), a card reader (9) or the like, and that commands via such a body (8; 9) are arranged to individually, or in combination with information obtained from a mobile radiotelephone, entail initiation for the implementation of a predetermined procedure and / or action. Device according to one of Claims 5 to 7, characterized in that after determining the approved call to the subscriber, the receiving radio unit (3) is arranged to switch to listening to the dial-up subscriber's voice data stream, and thereby only receive and accept any commands. available in the called subscriber's voice data stream, output as DTMF sequences, voice commands or the like. Device according to one of Claims 5 to 8, characterized in that a number sequence input to a mobile radiotelephone preferably has an initial non-numeric part, such as, for example, "*", or is received and interpreted as a direct command, which in accordance with a pre-programmed command involves initiating and executing predetermined process and / or action, such as a code lock command to open a gate lock (12). Device according to any one of claims 5 to 9, characterized in that it oo ooo co oo ao o oo oooo ooo oo ouno oo I oo vo oo oo oo - ooo ~ ooooooooooo ooo ooo ooo ooo no o oo oo oo ooo ooov * ooo .oo oo oooooooooooo oo oo o | The geographical reception area of the radio unit (3) in the "dormant" state is so limited that it essentially only responds to signals resulting from a mobile radiotelephone which is switched on from the off position within the reception area, i.e. then the mobile radio telephone with substantially full output seeks to establish contact with a nearby base station for carrying out a handshake procedure.