Abstract: A remote access system remotely accesses one or more electronic locks from a locally placed computer. The computer includes a key receptacle electrically coupled to the computer. The key receptacle allows ingress of a key, whereupon insertion of the key and login permission granted allows access of the computer to an electronic lock via a communication channel. The electronic lock is mechanically, electrically and functionally connected to activate and deactivate a locking mechanism of a lockable device. According to one arrangement, the computer is connected to the electronic lock via the communication channel to allow the user remote login to the electronic lock. The user located remote from the lock may therefore operate the lock from the remote location.

Abstract: A programmable electronic lock is provided. The electronic lock described herein employs many programmable features which enable a user to tailor lock functions for appropriate levels of security and convenience. The features are enabled and tailored via a set of operating parameters stored in an operating parameters data base within the lock. A lockable device employing the present lock may achieve levels of security and flexibility greater than those achieved utilizing conventional locks. Several of the features included in the lock are a timelock early feature for securing the lock prior to a programmed locking time; an idle key life feature for deactivating idle keys from the lock; a variable PIN code requirement structure for convenience and security; and a deposit logging feature for deposit doors.

Abstract: An electronic lock system includes a key having a memory for storing a first parameter defined by a plurality of fields and a second parameter indicative of a number of the fields. A lock has a receptacle for reading the first and second parameters from the key's memory and compare circuitry for comparing respective fields of the first parameter with a third parameter stored in the lock, with the number of fields compared based on the second parameter. Access to the lock is provided responsive to the compare circuitry, such that a single key may access a predetermined set of locks. The electronic lock is capable of performing a plurality of functions. Control is provided such that permission to access the functions is configurable for each key.

Abstract: The present invention uniquely applies data communications network techniques to a security system. A series of slave transponders are coupled via a full duplex bus to a master node. The master node is coupled to other master nodes to form a network. The master node periodically polls its slave transponders to authenticate them. Each transponder has processing capability to give a distributed processing system. Each master node is a gateway which directs transmissions to the appropriate end point. The system uses an accordion-like protocol which can have fields added or deleted in a specific structure to conform the protocol to the particular message being transmitted. The protocol begins with address bytes identifying the destination followed by a control field which identifies the fields which are present. For a broadcast, rather than a point-to-point transmission, a process ID field in the protocol determines what area or function has to be addressed in all units.

Abstract: The present invention uniquely applies data communications network techniques to a security system. A series of slave transponders are coupled via a full duplex bus to a master node. The master node is coupled to other master nodes to form a network. The master node periodically polls its slave transponders to authenticate them. Each transponder has processing capability to give a distributed processing system. Each master node is a gateway which directs transmissions to the appropriate end point. The system uses an accordion-like protocol which can have fields added or deleted in a specific structure to conform the protocol to the particular message being transmitted. The protocol begins with address bytes indentifying the destination followed by a control field which identifies the fields which are present. For a broadcast, rather than a point-to-point transmission, a process ID field in the protocol determines what area or function has to be addressed in all units.