Remote-control lock system

• US 4,686,529 A
• Filed: 01/06/1984
• Issued: 08/11/1987
• Est. Priority Date: 01/06/1984
• Status: Expired due to Fees

• Current Assignee: Kiekert AG (Lingyun Industrial Corporation Limited)
• Original Assignee: Telefunken Electronic GmbH (Continental AG), Kiekert GmbH & Company KG
• Inventors: Kleefeldt, Frank
• Primary Examiner(s): Weldon, Ulysses
• Assistant Examiner(s): Smith, Ralph E.
• Application Number:
  US06/568,610
• Time in Patent Office: 1,313 Days
• Field of Search: 70/256, 70/257, 70/277, 340/542, 340/825.3, 340/825.31, 340/825.22, 340/825.56, 340/825.69, 340/696, 343/7.6, 343/6.5 R, 343/6.5 LC, 455/26-28, 455/30, 455/38
• US Class Current: 340/5.64
• CPC Class Codes: G07C 2009/00253 dynamically, e.g. variable code - rolling code
• CPC Class Codes: G07C 2209/06 Involving synchronization or resynchronization between transmitter and receiver; reordering of codes
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G08C 19/28 using pulse code

Abstract

A remote-control lock system has a transmitter that can emit any of a set formed of a multiplicity of differently coded signals, a receiver that can be set to respond to any of the signals, and a lock operable by the receiver when it receives a signal it is set to. The set of signals the transmitter can emit includes a subset formed by a succession of different main signals and another subset formed by a succession of different synchronization signals. The transmitter is initially set to emit on normal actuation a predetermined one of the main signals and on special actuation a predetermined one of the synchronization signals and the receiver is set to respond only to the predetermined one main signal and to the predetermined synchronization signal to operate the lock. Thereafter on normal actuation of the transmitter, after each emission by the transmitter and reception by the receiver of the main signal they are both set to, the transmitter and receiver are both reset to the next of the main signals in the succession. On special actuation of the transmitter, after each emission by the transmitter and reception by the receiver of the synchronization signal they are both set to and after reception by the receiver of a main signal the receiver is not set to, the transmitter and receiver are reset to the next of the synchronization signals. When the end of either set of signals is reached the transmitter and receiver are reset to the first of the respective signal sets.

Claims

1. A method of operating a remote-control lock system having

a transmitter provided with a main-code generator that can emit any of a set formed of a multiplicity of differently coded main-code signals and with a synchronization-code generator that can emit any of a set formed of a multiplicity of differently coded synchronization signals different from the main code signals,

a receiver provided with a main-code decoder that can be set to respond to any of the signals and with a synchronization-code decoder that can be set to respond to any of the synchronization signals,

control means for resetting the main-code decoder of the receiver to a predetermined one of the main-code signals on receiving by the synchronization-code decoder of the synchronization signal it is set to, and

a lock operable by the receiver when its main-code decoder receives the main-code signal it is set to, the method comprising the steps of:

initially setting the main-code generator of the transmitter to emit on normal actuation a predetermined one of the succession of main signals, also initially setting the synchronization-code generator of the transmitter to emit on special actuation of the transmitter a predetermined one of the succession of synchronization signals, and also initially setting the main-code decoder of the receiver to respond to the predetermined one of the main signals and the synchronization-code decoder of the receiver to the predetermined one of the synchronization signals;

thereafter on normal actuation of the transmitter, after each emission by the main-code generator of the transmitter and reception by the main-code decoder of the receiver of the main signal they are both set to, resetting the main-code generator and decoder to the next of the main signals in the succession except after the last main signal of the succession has been emitted and received in which case the main-code generator and decoder are reset to the first of the succession of main signals;

thereafter on special actuation of the transmitter, after each emission by the synchronization-code generator of the transmitter and reception by the synchronization-code decoder of the synchronization signal they are both set to and after reception by the main-code decoder of the receiver of a main-code decoder is not set to, resetting the transmitter and receiver to the next of the synchronization signals in the succession except after the last synchronization signal of the succession has been emitted and received in which case the synchronization-code generator and decoder are reset to the first of the succession of synchronization signals; and

resetting the main-code generator to the predetermined one of the main signals on emission of a synchronization signal.

2. The lock-system operating method defined in claim 1, further comprising the step of:

when the synchronization-code decoder of the receiver receives a synchronization signal it is not currently set to, resetting the synchronization-code decoder to respond to the first of the synchronization signals; and

automatically resetting the synchronization-code generator transmitter on special actuation to emit the first of the synchronization signals when the lock is not opened immediately on special actuation of the transmitter.

3. The lock-system operating method defined in claim 1, further comprising the step of

substantially reduced transmitting power of the transmitter during special actuation.

4. A remote-control lock system comprising:

a transmitter provided with a main-code generator that can emit any of a set formed of a multiplicity of differently coded main-code signals and with a synchronization-code generator that can emit any of a set formed of a multiplicity of differently coded synchronization-code signals different from the main-code signals;

a receiver provided with a main-code decoder that can be set to respond to any of the main-code signals and with a synchronization-code decoder that can be set to respond to any of the synchronization signals;

a lock operable by the receiver only when its main-code decoder receives a main-code signal it is set to; and

control means for

initially setting the main-code generator of the transmitter to emit on normal actuation a predetermined one of the succession of main signals, also initially setting the synchronization-code generator of the transmitter to emit on special actuation a predetermined one of the succesion of synchronization signals, and also initially setting the main-code decoder of the receiver to respond to the predetermined one of the main signals and the synchronization-code decoder of the receiver to the predetermined one of the synchronization signals;

thereafter on normal actuation of the transmitter, after each emission by the main-code generator of the transmitter and reception by the main-code decoder receiver of the main signal they are both set to, resetting the main-code generator of the transmitter and the main-code decoder of the receiver to the next of the main signals in the succession except after the last main signal of the succession has been emitted and received in which case the main-code generator of the transmitter and the main-code decoder of the receiver are reset to the first of the succession of main signals; and

thereafter on special actuation of the transmitter, after each emission by the synchronization-code generator of the transmitter and reception by the synchronization-code decoder of the receiver of the synchronization signal they are both set to and after reception by the main-code decoder of the receiver of a main signal the main-code decoder is not set to, resetting the synchronization-code generator of the transmitter and the synchronization-code decoder of the receiver to the next of the synchronization signals in the succession except after the last synchronization signal of the succession has been emitted and received in which case the synchronization-code generator of the transmitter and the synchronization-code decoder of the receiver are reset to the first of the succession of synchronization signals; and

resetting the main-code decoder of the receiver to a predetermined one of the main signals on receiving by the synchronization-code decoder of the synchronization signal it is set to and resetting the main-code generator of the transmitter to the predetermined one of the main signals on emission of a synchronization signal.

5. The lock system defined in claim 4 wherein the control means further carries out the steps of:

when the synchronization-code decoder of the receiver receives a synchronization signal it is not currently set to, resetting the synchronization-code decoder to respond to the first of the synchronization signals; and

automatically resetting the synchronization-code generator transmitter on special actuation to emit the first of the synchronization signals when the lock is not opened immediately on special actuation of the transmitter.

6. The lock system defined in claim 4 wherein the control means further carries out the step of

substantially reducing transmitting power of the transmitter during special actuation.

7. A method of operating a remote-control lock system having

a transmitter provided with a main-code generator that can emit any of a set formed of a multiplicity of differently coded main-code signals and with a synchronization-code generator that can emit any of a set formed of a multiplicity of differently coded synchronization signals different from the main-code signals, the transmitter being capable of operating at a relatively high power for transmission at least of the main signals over a substantial distance and at a relatively low power only capable of transmitting at least the main signals over a very small distance,

a receiver provided with a main-code decoder that can be set to respond to any of the signals and with a synchronization-code decoder that can be set to respond to any of the synchronization signals,

control means for resetting the main-code decoder of the receiver to a predetermined one of the main-code signals on receiving by the synchronization-code decoder of the synchronization signal it is set to, and

a lock operable by the receiver when its main-code decoder receives the main-code signal it is set to, the method comprising the steps of:

initially setting the main-code generator of the transmitter to emit at high power on normal actuation a predetermined one of the succession of main signals, also initially setting the synchronization-code generator of the transmitter to emit on special actuation of the transmitter at low power a predetermined one of the succession of synchronization signals, and also initially setting the main-code decoder of the receiver to respond to the predetermined one of the main signals and the synchronization-code decoder of the receiver to the predetermined one of the synchronization signals;

thereafter on normal actuation of the transmitter, after each emission by the main-code generator of the transmitter and reception by the main-code decoder of the receiver of the main signal they are both set to, resetting the main-code generator and decoder to the next of the main signals in the succession except after the last main signal of the succession has been emitted and received in which case the main-code generator and decoder are reset to the first of the succession of main signals;

thereafter on special actuation of the transmitter, after each low-power emission by the synchronization-code generator of the transmitter and reception by the synchronization-code decoder of the synchronization signal they are both set to and after reception by the main-code decoder of the receiver of a main signal the main-code decoder is not set to, resetting the transmitter and receiver to the next of the synchronization signals in the succession except after the last synchronization signal of the succession has been emitted and received in which case the synchronization-code generator and decoder are reset to the first of the succession of synchronization signals; and

resetting the main-code generator to the predetermined one of the main signals on emission of a synchronization signal.