FORM 2
THE PATENTS ACT, 1970 (39 of 1970) PROVISIONAL/COMPLETE SPECIFICATION
[See Section 10]
1.Tele Lock
2. Nest Tech (India) Private Limited, a company incorporated under the provisions of the Companies Act, 1956, having its registered office at 803, Raheja Arcade, Sector 11, CBD Belapur, Navi Mumbai 400 614, Maharashtra, India, the following specification describes the nature of the invention and the manner in which it has to be performed :
This invention relates to a locking system operated by Telephone devices like Telephone/cellular phone and Full Functioned R.F. Remote Controller. Locking System of this type may be used at premises where the user of the locking system may opt to remain absent and may still want to exercise control over the operation of the locking system.
In case of traditional electronic locks the locking devices are keyboards, which can be easily bypassed by opening the lock wiih a hardware key provided therewith. However the hardware key provided therewith increases the risk of theft. As a duplication of the hardware key can be made easily by a locksmith. And also as the electronic lock is mounted on the door it can be easily damaged rendering the whole system inoperative without any backup solution like raising an alarm etc. The other electronic locks available is Access Card Lock which though guarantees non piracy of the Access Card leaves itseff open to possibility of the Card getting stolen/lost and then being misused. There is also available a locking system which is a microprocessor based electronic device which generates a number of passwords and if any password matches the password of this lock it automatically opens.
17-08-2001
In foreign countries there are also centrally operated computer locks. These can be accessed/opened by an operator from the computer. If however the

computer is left on by mistake the lock leaves itself open to any other unauthorized person.
As also for the Voice Interactive Lock which can be operated by the call of a name or any other word already fed. However anybody imitating the user can open this lock or if the user has a sore throat this lock becomes inoperative.
The latest in the locking devices is the Scanning/Imaging Locks, which can be opened with the impressions of thumb/feet/fingers/eye retina etc. However the scanner may be damaged rendering the whole device inoperative.
SUMMARY OF THE INVENTION
According to the invention when user dials password for opening the lock, he will enter the password through the keypad provided on Telephone/cell phone which are DTMF (Dual Tone Multiple Frequency) i.e. each digit is encoded with a particular frequency. Now DTMF decoder further decodes these DTMF signals, which convert the DTMF codes into binary numbers, which can be further processed by the Microcontroller, as the Microcontroller only, accepts binary number. Thereafter this Microcontroller can give instructions to open or close the lock. For opening the lock, the Microcontroller will send positive pulse to the Driver Circuit After which the Driver Circuit will connect the positive supply to the motor through the relay. For closing the lock, Microcontroller will send the negative pulse to Driver Circuit. After which the Driver Circuit will operate the relay & relay will reverse the voltage polarity to the motor, so that the motor operates in the reverse direction & the plunger coupled with the motor will move the plunger into the lock.
The Tete Lock according to the present invention consists of
I) An Integrated Circuit (IC) in form of Chip On Board (COB) contains following peripherals. Following peripherals are integrated together and form one Chip On Board. The contents of the Chip On Board are as follows: Dual Tone Multiple Frequency Transmitter Voice Read Only Memory (ROM) (About 30 Short messages)

1 Serial data input line for 16-bit code
1 Serial data output line for 16-bit code
5 Digital Input /Output for Latch Open /Close
Sensor and Emergency Sensor Input
3 Digital Input Pins for unique code for the Siren
Voice Synthesizer
Analog Signal Processor
Analog Signal Amplifier
Flexible Voice Memory management and
addressing Watchdog
Central Processing Unit operating between
2.5Volts to 5.5Volts
The Discreets IC consists of the following:
Dual Tone Multiple Frequency Receiver
Codec, which consist of the Coder and the
Decoder
Call Progress Tone Decoder
Flash Memory
Battery Management Integrated Circuit
Motorized Mechanism consists of the following components 1 Electrical Permanent Magnet Type 12 Volts Direct Current Motor geared to the Main Plunger or Bolt of lock to provide a straight horizontal movement in both directions (inside the lock as well as outside the lock). All gears are plastic gears
having the capacity to pull upto 6 Kgs & strike(travelling distance) of 22mm.
Plunger which made of Stainless Steel or Brass and is rectangular in shape.

V) Rechargeable Battery of 1.2 Volts x 8 Cells.
VI) Radio Frequency Transmitter of 400 MHz.(approx.)
VII) Radio Frequency Receiver of 400 MHz. (approx.)
VIII) Radio Frequency Remote Control consists of the following Radio Frequency Transmitter of 400 MHz. (approx.)
Encoder which encodes key pressed into binary numbers and feeds to the R F Transmitter
IX) Cordless Siren consists of
1 Siren operating on 12 Volts Direct Current
Battery
12 Volts Maintenance Free Rechargeable Battery
Battery Charger
Cut Out Circuit for 30 minutes.
Radio Frequency Receiver of 400 MHz. (approx).
12Volts, 1 Ampere AC Adapter.
Typically the Tele Lock according to the present invention has the following
functions:
I) Initial Settings
1. Set the password.
2. Set the address.
3. Set the Telephone numbers.
Initial Dial Up process for Voice Message Menu.
The User will lift the handset. Now that he wishes to set the password for Tele LocL He will dial the Telephone number of location where the Tele Lock is installed. After receiving the ringing tone the Tele Lock will get into the wakeup

mode from sleep mode. Thereafter the User will have to press the digits 786 for
bringing lock in picture. Digits 7,8 and 6 are received & converted in 4 bit binary
numbers. Then the CPU will check these digits as to whether they are correct or
not, if the digits are correct the CPU will fetch digitized voice message menu data
from ROM to the Random Access Memory (RAM) & convert in analog & send it
to the analog signal amplifier. This analog signal is fed to the Telephone line.
Pursuant to that through the Telephone line, it reaches to user. The messages
emitted are as follows:
"Presently Tele Lock is locked"
"Press 1 to open or close the Tele Lock"
"Press 2 to change the password"
"Press 3 if you have forgotten the password"
"Press 4 to change the Telephone numbers"
"Press 5 for change the address."
"Press 6 to repeat the voice messages"
"Press 0 to exit from Tele Lock system"
the above Voice Message Menu will be repeated every time the User wishes to
operate the Tele Lock. Thus in the further explanation we will not repeat the above
process. All the above functions are now explained one by one as follows.
1. Set the password.
This operation can be performed either a) Telephone or b) Cellular Phone. By using the Telephone/ Cellular Phone, the user will follow the Initial Dial Up process for Voice Message Menu. By default the password is set as 0000 0000. For setting a new password the user will press digit 2 & the sign # (below the digit 9). The digit & the # sign are in DTMF (Dual Tone Multiple Frequency) Format & are transmitted to the Tele Lock through the telephone line. In the lock, the DTMF Receiver converts the transmitted DTMF tones for 2 and the sign # into 4 bit

password. In this program CPU will fetch Digital Voice Data from Random Access Memory & send it to Digital Analog Converter (DAC) and the DAC will convert it into the analog voice signal which will then be amplified by Analog Signal Amplifier. This Amplified Voice Signal is fed to the Telephone line through the Telephone Interface Circuit, which interfaces Controller Circuit to high voltage telephone line (48 Volts). This voice message heard by the user would be "Please enter your current password." Now user will have to enter the default password 0000 0000#. This password is received by DTMF receiver & converted in 4-bit binary & sent to CPU. The CPU will compare it with the default password stored in Flash ROM. If it matches, CPU will send another voice message" Enter new password" by the same way as described above. Now user will have to enter the new password. Suppose he enters the password 12345678#, again DTMF receiver will convert it into 4 bit binary number & send to CPU. The CPU will now send this digital Password to the Flash ROM. For conformation the CPU will send one more message " Enter password again" & by the same way as explained above it will reach the user. The user will again enter 12345678#, the same password and the CPU will finally store it in Flash ROM & send one more Voice Message to the user "enter keyword incase you have forgotten your password." Now user have to enter 4 digit keyword suppose 1234#, CPU will store this keyword in the Flash ROM. Now CPU will send last messages to user "Password is successfully stored" & " Thank you & have a nice time." Now for exit from the system the user will have to press the digit 0 and the sign #. Thereafter the CPU will get the information that it has to exit from this part of program and the CPU will go in the idle/sleep mode. Now user will put down the receiver.
2. Set the Address.
This operation can be performed either by a) Telephone or b) Cellular Phone. By using the Telephone/ Cellular Phone, the user will follow the Initial Dial Up process for Voice Message Menu. Now the user has just set password. For setting the Address he will press the digit 5 & the sign #. The digit & the sign are in DTMF (Dual tone multiple frequency) Format & transmitted to the CPU through

the Telephone lines. In the Tele Lock the DTMF receiver convert the digit and the sign entered into 4 bit binary format & thereafter sends the same to the CPU. The CPU will compare it with the digits stored in the Flash Memory & will run the part of the main program for setting the address. In this program CPU will fetch Digital Voice Data from the RAM & send it to DAC. The DAC will convert it in analog voice signal & amplify it by Analog Signal Amplifier. This amplified voice signal is fed to the telephone line through the Telephone Interface Circuit, which interfaces the Controller Circuit to the high voltage telephone line. The voice message heard by the user is "Please enter your current password." thereafter the user will have to press current password 1234 5678#. This password is received by DTMF receiver & converted in 4-bit binary & then sent to CPU, The CPU will compare it with the current password stored in Flash ROM. If it matches, the CPU will send another voice message Le. "Announce your address after end of the beep sound." Now user will have to announce his name & address in his own voice. This voice signal is now received by the Analog to Digital Converter (ADC) through telephone line Interface Circuit, which converts high voltage signals to lower voltage, signals. This Digitized Voice Signal will now be stored in the Flash ROM. This name & address can be recorded for as long as 3 - 4 minutes. After completion of the address announcemem, the user has to press # for conformation of end of message. After storing Voice Data in the Flash ROM, the CPU will send two more messages to the user 1) " Your address is successfully stored" & 2) " Thank you and have a nice time". Now for exit from the system the user will have to enter the digit 0 and the sign #. Now the CPU will get information that it has to exit from that part of program. Thereafter the CPU will now go in idle/sleep mode. Now user has to put down the receiver.
3. Set Telephone Numbers.
This operation can be performed either by a) Telephone or b) Cellular
Phone. By using the Telephone/Cellular Phone the user will once again follow the
Initial Dial Up process for Voice Message Menu. Now for setting the Telephone
Numbers to which the system will emit alert messages, he will enter the digit 4 &

sign #. The digit 4 & the sign # are in the DTMF (Dual Tone Multiple Frequency) Format & transmitted to CPU through the Telephone lines. In the Tele Lock the DTMF Receiver will convert it into 4 bit binary format & send the same to the CPU. The CPU will check it & then run the part of main program for setting the Telephone Numbers. In this program CPU will fetch Digital Voice Data from RAM & send it to DAC. DAC will convert it in analog voice signal & amplify it with the help of Analog Signal Amplifier. This Amplified Voice Signal is fed to the telephone line through the Telephone Interface Circuit, which interfaces the Controller Circuit to high voltage telephone line. This Voice Message heard by user "Please enter your current password." Now User will enter the current password 1234 5678#. This password received by DTMF receiver is converted in 4 bit binary & sent to CPU. The CPU will thereafter compare it with the current password stored in Flash ROM. If it matches, the CPU will send another voice message "Enter first Telephone number". Now the user will have to enter the first Telephone number of his preference. Suppose he enters 4404444# as first Telephone number. This Telephone number is also received by DTMF receiver & converted in 4 bit binary numbers for each digit. These binary numbers are send to CPU. CPU stores it in the Flash ROM. Thereafter the CPU will send another message to the User " First Telephone number is stored successfully." This message gives conformation of storage of first Telephone number. The CPU will then send another message "Enter second Telephone number" Now user have to follow the same procedure as mentioned aforesaid to enter second Telephone number. After the whole abovementioned process is completed the CPU will send another message " Second Telephone number is successfully stored" & thereafter another message "Enter third Telephone number" For third number also the user has to follow the same procedure as for first and the second telephone number. Finally CPU sends the two messages "Third telephone number is successfully stored" & " Thank you and have a nice time" Now for exit from the system the user will have to enter the 0#. Now CPU will get information that it has to exit from that part of program. The CPU will now go in the idle/sleep mode. Now the user will put down the receiver.

4. Allow user to change password in case he has forgotten the password.
5. Open the Lock.
6. Close the Lock.
7. Change the password.
8. Change the addresses.
9. Change the Telephone numbers.
4. The present invention allows the user to change password incase he forgets
his password. This operation can be performed either by a) Telephone b) Cellular Phone. By using the Telephone/Cellular Phone, the user will once again follow the Initial Dial Up process for Voice Message Menu. Firstly he will follow Initial dial up process for voice message menu. To allow the user to change password in case he forgets his password, he will enter the digit 3 & the sign #. This digit & sign are in DTMF (Dual tone multiple frequency) Format & are transmitted to CPU through the telephone lines. In the Tele Lock the DTMF receiver converts it in to 4 bit binary format & sends it to the CPU. Then the CPU will then compare it with the digits stored in the Flash Memory & run the part of the main program allowing user to change password in case he forgets his password In this program CPU will fetch Digital Voice data from RAM & send it to DAC. The DAC will convert it in Analog Voice Signal & amplify it by the Analog Signal Amplifier. This Amplified Voice Signal is fed to the Telephone line through the Telephone Interface Circuit, which interfaces Controller Circuit to high voltage telephone line. When the voice message heard by user is "Enter your keyword." Now the user has to enter the keyword 1234#. This keyword is received by DTMF receiver & converted in 4 bit binary & sent to the CPU. The CPU will then compare it with the keyword stored in Flash ROM. If it matches, the CPU will send another message "Enter new password" Now user has to enter the new 8 digit password, suppose he enters 9012 3456#. DTMF receiver will send its 4 bit binary number for each digit to CPU. Then the CPU will store this number in Flash ROM & the CPU will send another

message to the user "Enter password again" for conformation of the new password. Then the user will have to enter the same password once again. When he enters the password again, CPU will store it finally in Flash ROM & send the message asking for keyword. "Enter keyword in case you have forgotten the password." now user have to enter 4 digit key word say 5678#. The CPU will store this keyword in the Flash ROM. Then the CPU sends the final message to user through the DAC, Analog Amplifier Interface Circuit "Password is successfully stored" & " Thank and Have a nice time". Now for exit from the system user have to enter the 0#. Now CPU will get information that it has to exit from this part of program. Then the CPU will go in idle/sleep mode. Now the user will then put down the receiver.
5. Open the lock.
This operation can be performed either by a) Telephone or b) Cellular Phone. By using the Telephone/ Cellular Phone the user will once again follow the Initial Dial Up process for Voice Message Menu. Firstly he will follow Initial dial up process for voice message menu. Now he has just set the password. For setting Address he will press digit 1 & sign #. This digit & sign are in the DTMF (Dual tone multiple frequency) Format & are transmitted to lock through the telephone line. In the lock DTMF receiver converts it in to 4 bit binary format & sends it to the CPU. The CPU will check it & run the part of main program for opening the lock. In this program the CPU will fetch Digital Voice Data from RAM & send it to DAC. The DAC will convert it in analog voice signal & amplify it by the Analog Signal Amplifier. This amplified voice signal is fed to the telephone line through the Telephone Interface Circuit, which interfaces Controller circuit to high voltage telephone line. This voice message will be heard by user "Please enter your current password," Now user have to press current password 1234 5678#. As soon as this password is entered the CPU will receive Binary Numbers from DTMF receiver. Now the CPU will compare the password entered & store in Flash ROM. If it matches, the CPU will send positive voltage to driver circuit of the motor. Driver circuit is used for driving the voltage of 12V DC to DC motor, which is coupled to the plunger of lock through the plastic gears. As soon as driver

circuit gets positive voltage on two digital output lines of the controller, driver circuit will provide 12V DC to the motor. As soon as motor gets the positive 12V DC, it will rotate in clockwise direction so that it will move the plunger inside the lock and as a result thereof the lock will open. As soon as the lock opens, one switch will get operated & will send signal to the CPU. The CPU will get conformation signal for lock opening. As soon as it gets this conformation of lock opening, the CPU will send one message conveying" Tele lock is successfully opened" & the final message "Thank you and have a nice time". Now for exit from the system the user will have to press 0 and #. Now CPU will get information that it has to exit from this part of program. The CPU will now go in the idle mode. Now the user will put down the receiver.
6. Close Lock.
This operation can be performed either by a) Telephone or b) Cellular Phone. By using the Telephone/ Cellular Phone the user will once again follow the Initial Dial Up process for Voice Message Menu. Firstly he will follow Initial dial up process for voice message menu. Now he has just the set the password. For setting the Address he will press digit 1 & sign #. These digit & sign are in DTMF (Dual tone multiple frequency format) & transmitted to lock through the Telephone lines. In the lock the DTMF receiver converts it into 4 bit binary format & sends to CPU. The CPU will check it & run the part of main program for closing the lock. In this program the CPU will fetch Digital Voice Data from RAM & sends it to DAC (Digital to Analog Converter) DAC will convert it in analog voice signal & will be amplified by Analog signal amplifier. This amplified voice signal is fed to the Telephone line through the Telephone interface circuit, which interfaces Controller Circuit to high voltage telephone line. This voice message will be heard by user "Please enter your current password." Now user will have to enter the current password 1234 5678#. As soon as password is entered, the CPU will receive the binary numbers from DTMF receiver. Then CPU will compare the password entered & stored in Flash ROM. If it matches, CPU will send negative voltage to driver circuit of motor. Driver circuit is used for providing driving voltage of 12V

DC to DC motor, which is coupled to the plunger of lock through the plastic gears. As soon as driver circuit gets negative voltage on two digital output lines of controller, driver circuit will provide 12 VDC to the motor. As soon as motor gets negative 12V DC, it will rotate in anticlockwise direction so that it will move the plunger outside the lock and as a result thereof the lock will close. As soon as lock opened, one switch will get operated & will send signal to the CPU. The CPU will get conformation signal for lock closing. As soon as it gets this conformation of lock opened, the CPU will send one message conveying " Tele lock is successfully opened" & final message " Thank and Have a nice time". Now for exit from the system user have to press the 0 ami #. Now CPU will get information that k has to exit from this part of the program. The CPU will now go in the idle mode. Now the user will put down the receiver.
7. Changing the password.
This operation can be performed either by a) Telephone or b) Cellular Phone. Same procedure is followed as in the case of setting the password. The only difference is that for initial settings the user has to enter default values of password, keyword, etc. However for this fiinctionto change the password the user has to enter the current values of password, keyword, etc.
8. Change Address.
This operation can be done either by a) the Telephone or b) Cellular Phone. Same procedure is followed as in the case of setting the password. The only difference is that for initial settings the user has to enter default values of password, keyword, etc and for this function the user has to enter the current values of password, keyword, etc.
9. To change Telephone Numbers.
This operation can be done by either by a) Telephone or b) Cellular Phone, the same procedure is followed as in case of setting the password. The only difference is that for initial settings the user has to enter default values of password, keyword,

etc however for this function the user has to enter the current values of password,
keyword, etc.
Alert message security is also provided in mis lock. It can be
explained by following way:
Three types of alert messages are used.
1. When somebody is trying to cut the plunger.
2. When some body is trying to burn the lock.
3. When some body is trying to break the password
Let us see how this alert message system operates 1. When somebody is trying to cut the plunger
The plunger of the lock is a steel rectangular body with four holes drilled on the inner side of the plunger. One enabled or isolated wire is inserted in this plunger and then a loop is made of the said wire with the object that if ever somebody cuts the plunger to the depth of 2mm-3mm this wire also gets cut. And as this wire is connected to one input line of the micro controller when the wire gets cut, automatically the voltage difference is created at the input line & the CPU gets it as a interrupt signal. As soon as CPU gets this interrupt on its input line it starts to execute its interrupt subroutine. In that subroutine the CPU will send one unique 16 bit serial code to the RF transmitter and the RF transmitter will transmit it towards the Cordless Siren. As soon as the RF Receiver inside the siren receives correct 16 bit code, the Controller inside the siren will send trigger signal on its one output line which is connected to Siren through Relay Driver Circuit Relay will make connection between 12 VDC rechargeable battery to Siren & the Siren will get activated so that the intruder will get engaged to stop this siren or will alternately run away. At the very next moment the CPU will fetch the 3 pre entered telephone numbers, put in the RAM, send first Telephone number to the DTMF transmitter. DTMF transmitter will accept the 4 bit binary number and convert it into DTMF codes & then transmit it to the telephone exchange. Before transmitting to the telephone exchange, the Telephone Interface Circuit will check for dial tone. If it is present, the CPU will give instructions to the DTMF transmitter to transmit

DTMF codes to telephone exchange and as soon as connection is established between lock & the telephone number of the person stored in the Flash ROM. Then the Telephone Interfece Circuit will recognise that coimection is established and then the CPU fetches Digitized Voice Message Data from Flash ROM & will put it in the RAM. Now CPU will send this data to DAC (Digital to Analog Converter). The DAC converts the digital data into Voice Audio Frequency Signal, which is further processed by Audio Signal Processor & amplified by AF Amplifier. This amplified message is "Somebody is trying to cut your lock, Please send help on following location (name) abc, (address) is xyz lane, etc, etc, Mumbai which is the prerecorded address which is passed through the Telephone Line Interface Circuit to the called party through the telephone exchange. This message is repeated 10 times. In this way rest two telephone numbers are also automatically called & the messages are played 10 times for each stored Telephone Number.
2. When somebody is trying to burn the lock
The plunger of the lock is a steel rectangular body. There is one Thermister (heat
i
sensor) which is pasted on the plunger as a heat sensor. So that when ever anybody tries to burn the lock, the Thermister's resistance Mis & as it is connected to one input line of microcontroller, if the heat applied is above 80 *C, then automatically the voltage difference is created at the input line of controller & CPU gets that as a interrupt signal. As soon as CPU gets interrupt signal on its input line it starts to execute its interrupt subroutine. In that subroutine, the CPU will send one unique 16 bit serial code to the RF transmitter. The RF transmitter will then transmit it towards the Cordless Siren. As soon as the RF receiver inside the siren receives the correct 16 bit code, Code Controller inside the siren will send trigger signal on the its one output line which is connected to siren through relay driver circuit The relay will make connection between 12 VDC rechargeable battery and the siren & siren will get activated so that intruder gets engaged in muting this siren or alternatively will run away. At the very next moment the CPU fetch the 3 pre entered telephone numbers, put in the RAM, send first Telephone number to the DTMF Transmitter. The DTMF transmitter will accept the 4 bit binary number and

convert it into DTMF codes & then transmit it to the telephone exchange. Before transmitting to the telephone exchange, the Telephone Interface Circuit will check for dial tone. If it is present, the CPU will give instructions to the DTMF transmitter to transmit DTMF codes to the telephone exchange and as soon as the connection is established between lock & the person stored in the Flash ROM the telephone interface circuit will recognise that the connection is established and then the CPU fetches Digitized Voice Message Data from Flash ROM & will put it in the RAM. Now the CPU will send this data to DAC(Digital to Analog Converter). The DAC converts the Digital Data into Voice Audio Frequency Signal which is further processed by Audio Signal Processor & amplified by AF Amplifier. This amplified message is "Somebody is trying to burn your lock, Please send help on following location (name) abc, (address) is xyz lane,etc, etc, Mumbai" which is the prerecorded address which is passed through the Telephone Line Interface Circuit to the called party through Telephone exchange. This message is repeated 10 times. In this way rest two Telephone numbers are also automatically called & the messages are played 10 times for each stored Telephone number.
3. When somebody is trying to break the password.: When some body enters wrong password three times, CPU will record that a wrong password has been entered three times & the very next moment the CPU will stop playing menu voice message on the current line. After few seconds the CPU will fetch the 3 pre entered telephone numbers and put them in the RAM. Then RAM send the first Telephone number to the DTMF Transmitter. The DTMF Transmitter will accept the 4 bit binary number and will convert it into DTMF codes & then transmit it to the Telephone exchange but before transmitting it to Telephone exchange the Telephone Interface Circuit will check for dial tone. If it is present, the CPU will give instructions to DTMF transmitter to transmit DTMF codes to the telephone exchange. As soon as connection is established between lock & telephone number of the party stored in the Flash ROM, the Telephone Interface Circuit will recognize that the connection is established. Now the CPU

fetches Digitized Voice Message Data from Flash ROM & puts it in the RAM. Then CPU will send this data to DAC (Digital to analog converter) and DAC converts the Digital Data into voice Audio Frequency Signal, which is further processed by Audio Signal Processor & amplified by AF Amplifier. This amplified message "Somebody is trying to break your password" is passed through the Telephone Line Interface Circuit to the called party through the telephone exchange. This message is repeated 10 times. In this way the other two stored telephone numbers are also automatically called & the message is played 10 times for each of the two remaining numbers.
Remote control is also provided for the critical condition when the telephone lines are out of order. In this case user can open or close the lock by simply entering the current password. When the user enters the password from the keypad provided on remote control, its equivalent binary number is encoded by the encoder & fed to RF transmitter. The RF transmitter transmits this data. In the lock, the RF receiver is used for receiving that transmitted data by remote. Thereafter this received data is fed to the CPU through serial input line. Then the CPU will compare this received data with the Password stored in Flash ROM. If it matches, and if lock is previously opened, CPU will send negative voltage to driver circuit of motor. Driver circuit is used to provide driving voltage of 12V DC to DC Motor which is coupled with the plunger of lock through the plastic gears. As soon as driver circuit gets negative voltage on two digital output lines of controller, driver circuit will provide 12 VDC to the motor and as soon as motor gets negative 12Volts DC, it will rotate in anticlockwise direction so that it will move the plunger outside the lock. As a result of which the lock will close and if lock is previously closed, CPU will send positive voltage to driver circuit of motor. Driver circuit is used to for provide driving voltage of 12V DC to DC motor, which is coupled to the plunger of lock through the plastic gears. As soon as driver circuit gets positive voltage on two digital output lines of controller, driver circuit will provide 12 VDC to the Motor. As soon as motor gets +ve 12V DC, it will rotate in clockwise direction so that it will move the plunger inside the lock & as a result of which the lock will open.

Battery backup is also provided for siren & lock. Charger circuit is used to charge the batteries. As soon as mains supply goes off, battery immediately starts to provide power to circuit & siren.
The Internal Layout of the lock can be explained with the help of
Fig.1, Fig.2, Fig.3, and FigA
Fig 1 shows the internal parts of lock. The parts of locks are numbered as (1), (2), etc for the sake of description. Following is the description with respect to each of that numbered part.
(1) Mounting holes for mounting the lock on the door.
(2) Pin to couple the motorized mechanism with
plunger or locking bolt.
(3) Hole on the front end of motorized mechanism to couple the plunger
& mechanism with the help of locking
pin.
(4) Flexible Rubber Seal on the moving part of mechanism
to prevent the dust entering in the mechanism.
(5) & (7) The mounting holes for mounting the motdrized
mechanism.
(6) Motorized Mechanism which contains I Electric Motor operating on
12 VDC coupled with 1 Slider Plastic Bar with the help of plastic
gears inorder that the Plastic Bar can move horizontally to push & pull
the plunger.
(8) Mounting hole for the Tele Lock.
(9) RF receiver to receive Serial data, transmitted by the Remote Controller.
(10) The 12VDC motor, which drives the lock is coupled to plunger through the plastic gears.
(11) RF Transmitter, which transmits 16-bit code to the siren every 10 seconds. This is the cordless link between lock

& siren.
(12) Driver circuit for Motorized Mechanism.
(13) Main Printed Circuit Board (Printed Circuit Board) on which the Circuit is mounted.
(14) Chip On Board (COB) which is the Integrated Circuit
bonded on the main PCB. The COB contains the following parts : Call progress Tone Decoder, DTMF Receiver DTMF Transmitter Codec
1 Serial data input for 16 bit code 1 Serial data output for 16 bit code 5 Digital I/O lines for Latch Open /Close Function Emergency Sensor Input 3 Digital Input Pins for unique code Voice Synthesizer Analog Signal Preprocessing Analog Signal Amplifier
Flexible Voice Memory Management and addressing Watch dog CPU, 2.5V to 5.5V operation.
The functions of the abovementioned parts are as follows Call progress tone decoder is used for ascertaining the status of telephone line like busy tone or line getting through, etc.
DTMF Receiver is used to convert DTMF codes into binary signal, which can be further processed by CPU.
DTMF is used for auto dialing the telephone numbers. Codec is used for getting good quality sound on telephone.

1 serial output for the 16- bit code for transmittmg 16-bit unique
code for Siren.
1 serial data input is used for getting serial data from remote
control through RF receiver.
5 Digital I/O lines used for heat sensor, reed relay, door closer
detector, for motor driver circuit, etc.
3 Digital Input Lines for providing serial communication to
flash ROM.
Voice Synthesizer, Analog signal processor and Analog
Amplifier i.e. used for interfacing voice
signals to telephone line with better quality.
Watch Dog is used to bring the controller in active mode
whenever ringing tone is available or not.
The CPU is the heart of circuit, which does all the functions &
controls all peripherals. Its operation
is on 2.5 V to 5.5V.
This COB accepts the instructions through telephone or remote control & executes it & operates the lock by sending the appropriate signals to the motor driving circuit.
(15) Other circuit is the Flash ROM Program Memory (Recording time of
1 minute or 3 minutes at 8Khz Sampling rate) for storing the user
name & address in his voice. Voice ROM (About 30 short messages
of duration 60 seconds.) is used for storing fixed messages &
telephone interface circuits.
(16) Battery charger circuit which contains the Battery Management IC, to charge the batteries & keep them always charged automatically. So that these batteries can be used when mains power goes off.
(17) Reed relay is used as Door Close Sensor. One magnet is pasted on facial plate of the Doorframe. So when ever
door closes its magnetic field activates the reed relay &

relay sends signal to controller or COB that door is closed. So that lock can be operated.
(18) Rechargeable Batteries 1.2 V X 8 are used for providing power to lock in case of mains power failure.
(19) Brass Facial Plate with one rectangular hole for movement of plunger through it.
(20) Mounting hole for lock.
(21) Heat sensor is used for sensing excessive heat.
(22) & (24) Guide for the Plunger who guides the movement of the Plunger
in straight line.
(23) Plunger also called locking bolt
(24) Plunger Cut Sensor
Fig 2 shows the internal parts of fecial plate, which is to be mounted on the door frame. So that the plunger can get engaged in the hole provided in it All parts of it are numbered as (1), (2), etc. Following description is with respect to that numbered parts.
(1) Facial plate is made of brass material.
(2) Rectangular Hole is provided for Plunger movement.
(3) Circular Magnet is provided for providing magnetic field for
reed relay, which senses that door is closed if the magnetic field is present otherwise opened.
Fig 3 shows the internal parts of Remote control. All parts of it are numbered as (1), (2), etc. Following description is with respect to that numbered parts.
(1) Silicon rubber keypad having silicon contacts & 12 keys of 0 to 9, * & #.
(2) The circuit of the remote control, which contains one RF Transmitter & Key Encoder. Function of the Key Encoder is to detect which switch-is pressed & to provide its binary value to
transmitter so that can be transmitted to the lock.
(3) Battery of 12V is provided to give the power to the circuit.

Fig 4 shows the internal parts of Cordless Siren. All parts of it are numbered as (1), (2), etc. Following description is with respect to that numbered parts.
(1) Metal body is provided so that intruder can't destroy it easily & gets engaged to stop it
(2) 12V rechargeable maintenance free battery is provided to provide power backup in case of mains goes off.
(3) The RF receiver & Code decoder & Triggering Circuit.
(4) Siren is made of the horn type shape & its circuit produces
particular sound pattern for siren. It operates on 12 V DC.
3. Tele Lock, a locking system operated by Telephone Devices like Telephone/ Cellular Phone and a Full Functioned R.F. Remote Controller.

WE CLAIM
1) Tele Lock for security purposes comprising of DTMF (Dual Tone Multiple Frequency) decoder, which converts DTMF signals into the DTMF, codes which are then converted into binary numbers.
2) Tele Lock according to Claim 1 wherein the Microcontroller further processes the binary numbers.
3) Tele Lock according to the previous claims, wherein this Microcontroller sends positive pulse to the Driver Circuit, which will then connect the positive supply to the motor through the relay of opening the Tele Lock.
4) Tele Lock according to the previous claims, wherein the Microcontroller sends the negative pulse to Driver Circuit. The Driver Circuit then operates the relay & relay reverses the voltage polarity to the motor, so that the motor operates in the reverse direction & the plunger coupled with the motor moves the plunger into the lock.

5) Tele Lock according to the previous claims, wherein
I) An Integrated Circuit (IC) in form of Chip On Board (COB)
containing following peripherals:
Dual Tone Multiple Frequency Trammitter
Voice Read Only Memory (ROM) (About 30 Short
Messages i.e. 60 Sec.)
1 Serial data input line for 16-bit code
1 Serial data output line for 16-bit code
5 Digital Input /Output lines for Latch Open/Close
Sensor and
Emergency Sensor Input 3 Digital Input Pins for unique code for the Siren as well
as for program storing.
Voice Synthesizer
Analog Signal Processor
Analog Signal Amplifier
Flexible Voice Memory management and addressing
Watchdog
Central Processing Unit operating between 2.5Volts to
5.5Volts is used.
6) Tele Lock according to the previous claims, wherein a few
discrete components as listed below are also used
Dual Tone Multiple Frequency Receiver
Codec.
Call Progress Tone Decoder
Flash Memory
Battery Management Integrated Circuit
7) Tele Lock according to the previous claims, wherein a Motorized
Mechanism consisting of the following components is also used

I) Electrical Permanent Magnet Type 12Volts Direct Current (DC) Motor geared to the Main Plunger or Both of lock to provide a straight horizontal movement in both directions (inside the lock as well as outside the lock). All gears are plastic gears having the capacity to pull up to 6 Kg. & strike (travelling distance) of 22mm. Plunger made of Stainless Steel or Brass or bright bar of MS.
8) Tele Lock according to the previous claims, wherein using 8
Rechargeable Batteries of \2 Volts each provides a power backup.
9) Tele Lock according to the previous claims, wherein Radio Frequency
Transmitter of 400 MHz. (approx) is used for transmitting the 16 bit unique
code to cordless siren, which then compares that code & activates the siren if
necessary and can also receive the Password from the RF Remote Controller in
the form of binary digits with the help of Radio frequency receiver.
10) Tele Lock according to the previous claims, wherein the Radio Frequency Remote Control, which consists of the Radio Frequency Transmitter of 400 MHz. (approx), transmits encoded binary digits from the encoder.
11) Tele Lock according to the previous claims, wherein the
Encoder encodes key on the keypad of the remote controller into binary numbers and feeds to the R F Transmitter, which then transmits this data to the RF receiver in side of lock to the CPU through serial input line. Then the CPU will compare this received data with the Password stored in Flash ROM.
12) Tele Lock according to the previous claims, wherein the
Cordless Siren consists of Siren operating on 12 Volts Direct
Current (DC) Battery (Maintenance free battery.)

13) Tele Lock according to the previous claims, wherein a Cut Out Circuit is provided for the siren to blow for only 30 minutes, Which then disconnects the siren from battery so that the battery is should not discharge fully.
14) Tele Lock according to the previous claims, wherein the Cordless siren consists of one Radio Frequency Receiver of 400 MHz. (approx), which receives the serial binary data to be Transmitted by CPU with the help of RF transmitter.
15) Tele Lock according to the previous claims, wherein the
Logical Circuits make the output high which then activates the Siren through the Electromagnetic Relay.
16) Tele Lock according to the previous claims, wherein 12Volts,
lamp external power supply is provided for providing 12 V DC to the whole circuit.
17) Tele Lock according to the previous claims, wherein the Digital
To Analog Converter (DAC) is used which converts the digital
Voice data stored in the Flash memory in to the analog signal &
transmits it to the user to the user through the telephone
Interface circuit used for interfacing 48Volts telephone lines to
the 5V microcontroller.
a. Tele Lock according to the previous claims, wherein the Analog to
Digital Converter (ADC) is used which converts the user voice signal for
recording the name & address of user for sending alert messages to the 3
pre entered telephone numbers.
b. Tele Lock according to the previous claims, wherein the analog voice

signal is converted into the digital using ADC & stored in the Flash ROM and thereafter retrieved and converted into analog with the help of DAC and then transmitted to user whenever instructed by CPU according to the program stored in the Flash ROM.
18) Tele Lock according to the previous claims, wherein the
DTMF transmitter is used for dialing the pre-entered telephone
numbers in case of sending/transrnitting alert messages as the
DTMF transmitter accepts 4-bit numbers from the CPU &
converts in to the DTMF signals so that these can be
transmitted to the telephone exchange, which further connects
to the called parties whose telephone numbers stored in the system.
19) Tele Lock according to the previous claims, wherein the call tone processor chip/IC is used to get information whether the connection is established or not as it gives logical high output in case of connection is established.
20) Tele Lock according to the previous claims, wherein 3 types of alert messages are stored along with 3 types of sensors and a Thermister as heat sensor.
21) Tele Lock according to the previous claims, wherein these sensors are connected to the Interrupt Input Line of Microcontroller and as the CPU gets interrupt signal, the CPU will run the particular subroutine related to particular interrupt number & will dial the 3 pre entered telephone numbers with the help of DTMF transmitter & fetch the particular digital voice data, converts it in to the analog signal with the help of DAC & transmitted on the telephone line to the called party.
22) Tele Lock according to claim 21, wherein the analog voice message is repeated 5 times on each telephone so that the

person can hear/understand the message clearly.

23) Tele Lock substantially as herein described.
24) A process for producing Tele Lock substantially as herein described.
Dated this 16 day of August, 2001.
To,
The Controller of Patents The Patent Office, at Mumbai.