EP0570103A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A remote control security system
Assignee: ZF Active Safety and Electronics US LLC
•
Filing: 1993-04-01
•
Granted: —
•
Expires: 2013-04-01
Abstract
Abstract A remote control keyless security system is presented herein for remotely controlling the locking and unlocking control functions of a locking means mounted on a vehicle or the like. A receiver (R) is mounted on a vehicle proximate to the locking means to be controlled. A transmitter (T) is located remote from the receiver and includes a plurality of selectively actuatable switches (12-16) each representative of a control function to be performed by the locking means and circuitry responsive to actuation of one of the switches for transmitting a digital signal (5) including a first portion having a multi-bit security code (17) uniquely identifying the transmitter from that of a plurality of similar transmitters, a multi-bit sequence control code (19) adapted to be sequentially changed in response to each actuation of a switch and a multi-bit function code (21) identifying one of a plurality of control functions to be performed by the locking means. The transmitter (T) changes the sequence control code after each operation with the change being dependent upon information contained in the security code identifying the transmitter. The receiver (R) stores a multi-bit receiver security code identifying a specific transmitter from which the receiver may validly receive a digital signal. The received security code is compared with the stored receiver security code to determine whether the security codes match. The receiver also stores a multi-bit sequence control code. Circuitry responds to each occurrence of a match between the security codes for reading the stored sequence control code and changing it to define an updated sequence control code having a value dependent upon information contained in the stored security code. The updated sequence control code is compared with the received sequence control and an output indication is provided in dependence upon the comparison.
Inventors
- 👤 George P. Lambropoulos
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00182; H; H04; H04K; H04K1/00; G07C2009/00238; G07C2009/00253; G07C2009/00753; G07C2009/00769; G07C2009/00793
Claims Analysis
Total Claims: 65
Claim 1
Independent Claim
182 words
A transmitter for use in a remote control keyless security system for remotely controlling the locking and unlocking control functions of a locking means on a vehicle or the like having a receiver mounted on said vehicle, said transmitter being located remote from said receiver, wherein said transmitter comprises: an actuatable switch means representative of a control function to be performed by said locking means; signal transmission means including circuit means responsive to actuation of said switch means for transmitting a digital signal including a first portion having a multi-bit security code uniquely identifying said transmitter from a plurality of similar transmitters, a multi-bit sequence control code adapted to be sequentially changed in response to each actuation of a said switch means, and a multi-bit function code identifying one of a plurality of said control functions to be performed by said lock means; said transmitter including means responsive to each actuation of a said switch means for sequentially changing the digital value of said sequence control code with each change being dependent upon information contained in said security code identifying said transmitter.
Claim 2
Dependent Claim
29 words
A transmitter as set forth in claim 1 including a plurality of said actuatable switch means for each representing a control function to be performed by said locking means.
Claim 3
Dependent Claim
50 words
A transmitter as set forth in claim 1 wherein said digital signal transmitted by said transmitter includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein said first portion is scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 4
Dependent Claim
31 words
A transmitter as set forth in claim 3 wherein said second code includes information as to which one of said plurality of scrambling algorithms was employed for scrambling said first portion.
Claim 5
Dependent Claim
58 words
A transmitter as set forth in claim 1 wherein said digital signal transmitted by said transmitter includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein the codes in said first portion are arranged in order for transmission in accordance with one of a plurality of transmission order algorithms.
Claim 6
Dependent Claim
41 words
A transmitter as set forth in claim 5 wherein said second code includes information as to which one of said transmission order algorithms was employed for arranging the order of said codes in said first portion for transmission by said transmitter.
Claim 7
Dependent Claim
34 words
A transmitter as set forth in claim 5 wherein the digital signal transmitted by said transmitter has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 8
Dependent Claim
41 words
A transmitter as set forth in claim 7 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission by said transmitter.
Claim 9
Dependent Claim
34 words
A transmitter as set forth in claim 6 wherein the digital signal transmitted by said transmitter has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 10
Dependent Claim
41 words
A transmitter as set forth in claim 9 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission by said transmitter.
Claim 11
Dependent Claim
251 words
A receiver for a remote control keyless security system for remotely controlling the locking and unlocking control functions of a locking means mounted on a vehicle or the like wherein said receiver is adapted to be mounted on a said vehicle, said receiver including: means for receiving a digital signal from a remote transmitter wherein said received digital signal includes a first portion having a multi-bit security code uniquely identifying said transmitter from that of a plurality of similar transmitters, a multi-bit sequence control code adapted to be sequentially changed in response to each transmission of a said digital signal, and a multi-bit function code identifying one of a plurality of said control functions to be performed by said lock means; security code memory means for storing a multi-bit receiver security code identifying a specific transmitter from which said receiver may validly receive a transmitted digital signal; means for comparing said received security code with said stored security code to determine if said security codes match; sequence code memory means for storing a multi-bit sequence control code; means responsive to each occurrence of a said match between said security codes for reading said stored sequence control code and changing its digital value to define an updated sequence control code having a digital value dependent upon information contained in said stored security code; means for comparing said updated sequence control code with said received sequence control code; and means responsive to said function code for controlling said locking means in dependence thereon.
Claim 12
Dependent Claim
50 words
A receiver as set forth in claim 11 wherein said received digital signal includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein said codes in said first portion are scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 13
Dependent Claim
32 words
A receiver as set forth in claim 12 wherein said second code includes information as to which one of said scrambling algorithms was employed for scrambling the codes in said first portion.
Claim 14
Dependent Claim
32 words
A receiver as set forth in claim 13 including means for de-scrambling said codes in the first portion of said received digital signal in dependence upon information contained in said second code.
Claim 15
Dependent Claim
53 words
A receiver as set forth in claim 11 wherein said received digital signal includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein the codes in said first portion are arranged in order in accordance with one of a plurality of transmission order algorithms.
Claim 16
Dependent Claim
36 words
A receiver as set forth in claim 15 wherein said second code includes information as to which one of said transmission order algorithms was employed for arranging the order of said codes in said first portion.
Claim 17
Dependent Claim
36 words
A receiver as set forth in claim 16 including means for rearranging the order of said codes in the first portion of said received digital signal in dependence upon information contained in the said second code.
Claim 18
Dependent Claim
31 words
A receiver as set forth in claim 15 wherein said received digital signal has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 19
Dependent Claim
41 words
A receiver as set forth in claim 18 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission by said transmitter.
Claim 20
Dependent Claim
38 words
A receiver as set forth in claim 19 wherein said receiver includes means for rearranging the order of the codes in the first portion of said received digital signal in dependence upon information contained in said second code.
Claim 21
Dependent Claim
337 words
A remote control keyless security system for remotely controlling the locking and unlocking control functions of a locking means mounted on a vehicle or the like and comprising: a transmitter and a receiver wherein said receiver is mounted on said vehicle and said transmitter is located remote from said receiver; said transmitter having a plurality of selectively actuatable switch means each representative of a control function to be performed by said locking means and signal transmission means including circuit means responsive to actuation of one of said switch means for transmitting a digital signal including a first portion having a multi-bit security code uniquely identifying said transmitter from that of a plurality of similar transmitters, a multi-bit sequence control code adapted to be sequentially changed in response to each actuation of a said switch means and a multi-bit function code identifying one of a plurality of said control functions to be performed by said locking means; said transmitter including means responsive to each actuation of a said switch means for sequentially changing the digital value of said sequence control code with each change being dependent upon information contained in said security code identifying said transmitter; said receiver including means for receiving said digital signal and including: security code memory means for storing a multi-bit receiver security code identifying a specific transmitter from which said receiver may validly receive a transmitted digital signal; means for comparing said received security code with said stored receiver security code to determine whether said security codes match; sequence code memory means for storing a multi-bit sequence control code; means responsive to each occurrence of a said match between said security codes for reading said stored sequence control code and changing its digital value to define an updated sequence control code having a digital value dependent upon information contained in said stored security code; means for comparing said updated sequence control code with said received sequence control; and means responsive to said function code word for controlling said locking means in dependence thereon.
Claim 22
Dependent Claim
53 words
A system as set forth in claim 21 wherein said digital signal transmitted by said transmitter includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein said codes in said first portion are scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 23
Dependent Claim
32 words
A system as set forth in claim 22 wherein said second code includes information as to which one of said scrambling algorithms was employed for scrambling the codes in said first portion.
Claim 24
Dependent Claim
34 words
A system as set forth in claim 23 wherein said receiver includes means for de-scrambling said codes in the first portion of said received digital signal in dependence upon information.contained in said second code.
Claim 25
Dependent Claim
59 words
A system as set forth in claim 21 wherein said digital signal transmitted by said transmitter includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein the codes in said first portion are arranged in order for transmission in accordance with one of a plurality of transmission in order algorithms.
Claim 26
Dependent Claim
41 words
A system as set forth in claim 25 wherein said second code includes information as to which one of said transmission order algorithms was employed for arranging the order of said codes in said first portion for transmission by said transmitter.
Claim 27
Dependent Claim
39 words
A system as set forth in claim 26 wherein said receiver includes means for rearranging the order of said codes in the first portion of said received digital signal in dependence upon information contained in the said second code.
Claim 28
Dependent Claim
34 words
A system as set forth in claim 25 wherein the digital signal transmitted by said transmitter has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 29
Dependent Claim
41 words
A system as set forth in claim 28 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission by said transmitter.
Claim 30
Dependent Claim
38 words
A system as set forth in claim 29 wherein said receiver includes means for rearranging the order of the codes in the first portion of said received digital signal in dependence upon information contained in said second code.
Claim 31
Dependent Claim
36 words
A system as set forth in claim 26 wherein the digital signal transmitted by said transmitter has each of said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 32
Dependent Claim
41 words
A system as set forth in claim 31 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission by said transmitter.
Claim 33
Dependent Claim
38 words
A system as set forth in claim 32 wherein said receiver includes means for rearranging the order of the codes in the first portion of said received digital signal in dependence upon information contained in said second code.
Claim 34
Dependent Claim
34 words
A system as set forth in claim 27 wherein the digital signal transmitted by said transmitter has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 35
Dependent Claim
41 words
A system as set forth in claim 34 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission by said transmitter.
Claim 36
Dependent Claim
38 words
A system as set forth in claim 35 wherein said receiver includes means for rearranging the order of the codes in the first portion of said received digital signal in dependence upon information contained in said second code.
Claim 37
Independent Claim
192 words
A method of transmitting a digital signal for use in remotely controlling the locking and unlocking functions of a locking means on a vehicle having a receiver mounted on the vehicle, and comprising the steps of: locating a signal transmitter at a location remote from a said receiver; actuating one of a plurality of switch means provided at the transmitter wherein each switch means represents one of a plurality of control functions to be performed by said locking means; responding to actuation of one of said switch means for transmitting a said digital signal including a first portion having a multi-bit security code uniquely identifying said transmitter from that of a plurality of similar transmitters, a multi-bit sequence control code adapted to be sequentially changed in response to each actuation of a said switch means and a multi-bit function code identifying one of a plurality of said control functions to be performed by said lock means; and, responding to each actuation of a said switch means by sequentially changing the digital value of said sequence control code with each change being dependent upon information contained in the security code identifying said transmitter.
Claim 38
Dependent Claim
55 words
A method as set forth in claim 37 wherein said step of transmitting said digital signal includes transmitting said first portion along with a second portion wherein the second portion has a multi-bit second code, and wherein said codes in said first portion are scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 39
Dependent Claim
32 words
A method as set forth in claim 38 wherein said second code includes information as to which one of said scrambling algorithms was employed for scrambling the codes in said first portion.
Claim 40
Dependent Claim
60 words
A method as set forth in claim 37 wherein said step of transmitting said digital signal includes transmitting said first portion along with a second portion wherein said second portion has a multi-bit second code, and wherein the codes in said first portion are arranged in order for transmission in accordance with one of a plurality of transmission order algorithms.
Claim 41
Dependent Claim
38 words
A method as set forth in claim 40 wherein said second code includes information as to which one of said transmission order algorithms was employed for rearranging the order of said codes in said first portion for transmission.
Claim 42
Dependent Claim
31 words
A method as set forth in claim 40 wherein the digital signal transmitted has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 43
Dependent Claim
35 words
A method as set forth in claim 42 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the codes in said first portion for transmission.
Claim 44
Independent Claim
237 words
A method of controlling the locking and unlocking control functions of a locking means mounted on a vehicle or the like and comprising the steps of: mounting a receiver on said vehicle; receiving a digital signal at said receiver from a remotely located transmitter, and wherein said received digital signal includes a first portion having a multi-bit security code uniquely identifying said transmitter from that of a plurality of similar transmitters, a multi-bit sequence control code adapted to be sequentially changed in response to each transmission of a said digital signal, and a multi-bit function code identifying one of a plurality of said control functions to be performed by said locking means; storing a multi-bit receiver security code identifying a specific transmitter from which a transmitted digital signal may be validly received; comparing said received security code with said stored security code to determine if the security codes match; storing a multi-bit sequence control code at said receiver; responding to each occurrence of a match between said security codes for reading said stored sequence control code and changing its digital value to define an updated sequence control code having a digital value dependent upon information contained in the stored security code; comparing said updated sequence control code with said received sequence control code and providing an output indication in dependence upon the comparison; and responding to the function code for controlling the locking means in dependence thereon.
Claim 45
Dependent Claim
51 words
A method as set forth in claim 44 wherein said received digital signal includes said first portion along with a second portion wherein said second portion has a multi-bit second code and wherein said codes in said first portion are scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 46
Dependent Claim
32 words
A method as set forth in claim 45 wherein said second code includes information as to which one of said scrambling algorithms was employed for scrambling the codes in said first portion.
Claim 47
Dependent Claim
34 words
A method as set forth in claim 46 including the step of de-scrambling said codes in said first portion of the received digital signal in dependence upon information contained in said received second code.
Claim 48
Dependent Claim
53 words
A method as set forth in claim 44 wherein said received digital signal includes said first portion and a second portion wherein said second portion has a multi-bit second code and wherein the codes in said first portion are arranged in order in accordance with one of a plurality of transmission order algorithms.
Claim 49
Dependent Claim
36 words
A method as set forth in claim 48 wherein said second code includes information as to which one of said transmission order algorithms was employed for arranging the order of said codes in said first portion.
Claim 50
Dependent Claim
37 words
A method as set forth in claim 49 including the step of rearranging the order of said codes in said first portion of said received digital signal in dependence upon information contained in said received second code.
Claim 51
Dependent Claim
31 words
A method as set forth in claim 48 wherein said received digital signal has said codes in said first portion scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 52
Dependent Claim
38 words
A method as set forth in claim 51 wherein said second code includes information as to which one of said transmission order algorithms was employed in arranging the order of the codes in said first portion for transmission.
Claim 53
Dependent Claim
37 words
A method as set forth in claim 52 including the step of rearranging the order of the codes in the first portion of said received digital signal in dependence upon information contained in said received second code.
Claim 54
Independent Claim
323 words
A method of controlling the locking and unlocking control functions of a locking means mounted on a vehicle or the like and comprising the steps of: mounting a receiver on a said vehicle; positioning a signal transmitter at a location remote from said receiver; actuating one of a plurality of switch means provided at the transmitter wherein each switch means represents one of a plurality of control functions to be performed by said locking means; responding to actuation of a said switch means for transmitting a digital signal including a first portion having a multi-bit security code uniquely identifying said transmitter from that of a plurality of similar transmitters, a multi-bit sequence code adapted to be sequentially changed in response to each actuation of a said switch means and a multi-bit function code identifying one of a plurality of said control functions to be performed by said locking means; sequentially changing the digital value of said sequence control code in response to successive actuation of a said switch means with each change being dependent upon information contained in said security code identifying said transmitter; receiving a said digital signal at said receiver; storing a multi-bit receiver security code at said receiver identifying a specific transmitter from which said receiver may validly receive a transmitted digital signal; comparing said received security code with said stored receiver security code to determine whether said security codes match; storing a multi-bit sequence control code at said receiver; responding to each occurrence of a match between said security codes for reading said stored sequence control code and changing its digital value to define an updated sequence control code having a digital value dependent upon information contained in said stored receiver security code; comparing said updated sequence control code with said received sequence control code and providing an output indication in dependence upon said comparison; and, responding to said function code for controlling said locking means in dependence thereon.
Claim 55
Dependent Claim
55 words
A method as set forth in claim 54 wherein said step of transmitting said digital signal includes transmitting said first portion together with a second portion wherein said second portion has a multi-bit second code and wherein said codes in said first portion are scrambled in accordance with one of a plurality of scrambling algorithms.
Claim 56
Dependent Claim
32 words
A method as set forth in claim 55 wherein said second code includes information as to which one of said scrambling algorithms was employed for scrambling the codes in said first portion.
Claim 57
Dependent Claim
33 words
A method as set forth in claim 56 including de-scrambling said codes in the first portion of said received digital signal at said receiver in dependence upon information contained in said second code.
Claim 58
Dependent Claim
60 words
A method as set forth in claim 54 wherein said step of transmitting said digital signal includes transmitting said first portion and transmitting a second portion wherein said second portion has a multi-bit second code and wherein the codes in said first portion are arranged in order for transmission in accordance with one of a plurality of transmission order algorithms.
Claim 59
Dependent Claim
41 words
A method as set forth in claim 58 wherein said second code includes information as to which one of said transmission order algorithms was employed for arranging the order of said codes in said first portion for transmission by said transmitter.
Claim 60
Dependent Claim
36 words
A method as set forth in claim 59 including the step of rearranging the order of said codes in the first portion of said received digital signal in dependence upon information contained in said second code.
Claim 61
Independent Claim
141 words
A method of operating a portable transmitter to remotely control at least one function on a vehicle, comprising the steps of: providing a manually operable switch on said transmitter for use in manually signalling that a function on the vehicle is to be operated; responding to the operation of the manually operable switch by generating a control code for transmission to the vehicle for controlling a function on the vehicle; providing a security code uniquely identifying that particular transmitter; providing a second code which changes from time to time; selecting a scrambling function in accordance with the second code; providing a first message including the control code and the security code; scrambling the first message according to the selected scrambling function; providing a second message including the first message and the second code; transmitting the second message to a said vehicle.
Claim 62
Independent Claim
115 words
A method of operating a portable transmitter to remotely control at least one function on a vehicle in a secure manner, comprising the steps of: providing a manually operable switch on said transmitter for use in manually signalling that a function on the vehicle is to be operated; generating a message for transmission to the vehicle for controlling a function on the vehicle in response to operation of the manually operable switch; generating an error detecting code based upon said message for use in detecting errors in transmission of said message; scrambling said message in dependence upon the generated error detecting code; transmitting the scrambled message and the unscrambled error detecting code to said vehicle.
Claim 63
Dependent Claim
144 words
A portable transmitter for remotely controlling at least one function on a vehicle in a secure manner, comprising: a small, hollow transmitter housing adapted for easy transportation in a person's pocket; a manually operable switch mounted in said housing and manually operable from the outside of said housing to control operation of the function; electronic means contained within said housing and responsive to said switch for (a) generating a message for transmission to the vehicle for controlling a function on the vehicle, (b) generating an error detecting code based upon said message for use in detecting errors in transmission of said message, (c) scrambling said message in dependence upon the generated error detecting code, and (d) transmitting the scrambled message and the unscrambled error detecting code to said vehicle; and portable power source means contained with in said housing for powering said electronic means.
Claim 64
Dependent Claim
143 words
A portable transmitter for remotely controlling at least one function on a vehicle in a secure manner, comprising: a small, hollow transmitter housing adapted for easy transportation in a person's pocket; a manually operable switch mounted in said housing and manually operable from the outside of said housing to control operation of the function; electronic means contained with in said housing and responsive to said switch for (a) generating a message for transmission to the vehicle, said message containing a control code indicative of the desired operation and a security code uniquely identifying said transmitter, (b) generating a second code which changes from time to time, (c) scrambling said message in dependence upon the second code, and (d) transmitting said scrambled message and said second code to said vehicle; and portable power source means contained within said housing for powering said electronic means.
Claim 65
Dependent Claim
156 words
A portable transmitter for remotely controlling at least one function on a vehicle in a secure manner, comprising: a small, hollow transmitter housing adapted for easy transportation in a person's pocket; a manually operable switch mounted in said housing and manually operable from the outside of said housing to control operation of the function; electronic means contained within said housing and responsive to said switch for (a) generating a message for transmission to said vehicle, said message containing a control code indicative of the desired operation and a security code uniquely identifying said transmitter, (b) generating an error detecting code based upon said message for use in detecting errors in transmission of said message, (c) scrambling said message in dependence upon the generated said error detecting code, and (d) transmitting the scrambled message and the unscrambled error detecting code to said vehicle; and portable power source means contained within said housing for powering said electronic means.
References Cited (Backward Citations)
No citation records indexed.
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