A method of decreasing resonant frequency shifting of an electrical circuit mounted on a vehicle key includes providing a frame in an opening in the head portion of a vehicle key and locating the transponder in the frame. The frame comprises substantially rigid non-metallic material, and the frame includes a support structure for supporting the transponder while decreasing forces produced on the transponder by thermal expansion and contraction of the head portion of the key, thereby decreasing shift in the resonance of the electrical circuit of the transponder. The frame, the transponder and the head portion of the key are overmolded providing an outer covering that encloses and protects the transponder.

Key assembly for vehicle ignition locks

Eine numerische Steuerungsvorrichtung (1) umfasst: eine Steuerungseinheit (102), welche die Bewegung von Achsen einer Werkzeugmaschine (3) mittels eines Positionsbefehls (103) entsprechend einem Bearbeitungsprogramm (101) steuert und Positionsinformationen bezuglich der Achsen erfasst; eine Uberwachungspunktbestimmungseinheit (111), die in Abhangigkeit von einer Art einer Anweisung oder einer Anweisung in Bezug auf eine im Bearbeitungsprogramm beschriebene Verfahrbewegung einen Uberwachungspunkt; den es zu uberwachen gilt, und eine Uberwachungsachse als die zu uberwachende Achse im Bearbeitungsprogramm festlegt; und eine Uberwachungseinheit (113), die anhand der Positionsinformationen (121) am Uberwachungspunkt der Uberwachungsachse uberwacht, ob ein Fehler oder eine Abweichung einen vorbestimmten Grenzwert uberschreitet, wobei die Steuerungseinheit die Bewegung der Achsen anhand des Uberwachungsergebnisses (125) der Uberwachungseinheit steuert, und die numerische Steuerungsvorrichtung ferner eine Analyseeinheit (115) umfasst, die basierend auf den Uberwachungsergebnissen darstellt, ob die Ursache des Fehlers oder der Abweichung ein mechanischer Faktor oder ein steuerungstechnischer Faktor ist, und das Analyseergebnis des Faktors an eine Ausgabeeinheit (116) ausgibt.

Numerical control device

A key (10) is provided that includes a key body (12) having a forked end. The forked end comprises a first tine (14) and a second tine (16). A transponder (20) is disposed between the first tine (14) and the second tine (16). The transponder (20) is operable to generate signals. An air coil antenna (18) is coupled to the key body (12) proximate the forked end and is electrically coupled to the transponder (20). The air coil antenna (18) is operable to transmit signals generated by the transponder (20).

Key having an air coil antenna and a method of construction

An electronic lock that can be pre-programmed or trained in the field to recognize ordinary flat metal keys by sensing their shape and comparing to a database is disclosed. The lock can be contained in standard configurations for door locks, communicates with external systems, provides control logic for querying and amending its database of allowed keys and rules, provides controlled access to logs of selected data, allows convenient but protected access to replacement batteries, can have all its electronics in the rotatable plug, can communicate and obtain power from devices in the adjacent door jam, can recognize special series key-blanks, can receive coded information entered using an unknown key that makes it useable, can be operated without a key to gain access with a code, can resist manipulation of the latching mechanism, can unlatch with very low power requirements, and provides for integration of almost all mechanism in silicon.

Electronic lock that can learn to recognize any ordinary key

A programmable security system and method for protecting an item of merchandise includes a programming station, a programmable key and a security system. The programming station generates a security code and communicates the security code to a memory of the programmable key. The programmable key initially communicates the security code to a memory of the security device and subsequently operates the security device upon a matching of the security code in the memory of the security device with the security code in the memory of the programmable key. The programmable key may also transfer power via electrical contacts or inductive transfer from an internal battery to the security device to operate a lock mechanism. The security code may be communicated by wireless infrared (IR) systems, electrical contacts or inductive transfer. A timer inactivates the programmable key and/or the security device after a predetermine period of time. A counter inactivates the programmable key after a predetermined maximum number of activations.

Programmable security system and method for protecting merchandise

A key system provided with the key, a magnetic core, a cylinder body and the magnetic field generation coil. In the key system communication is performed through magnetic coupling between the key and a cylinder so as to drive a controlled object. An inductance and capacitance resonance (LC) circuit having intrinsic resonance points as key information is mounted in the head of the key. The magnetic core is secured to the outside circumferential surface of a rotor at the key insertion hole thereof so as to form a magnetic circuit in cooperation with the key when the key is inserted into the key insertion hole.

Key system for a vehicle

PURPOSE: To reduce the energy loss when a bar core and a ring coil are combined magnetically and to improve the detecting accuracy of key data by positioning cores on both ends of the bar core combined magnetically to the key cylinder at the positions other than the metal parts CONSTITUTION: Responding to cuttings A formed at the positioning parts 9 and 10 of the expansion 5 of a key plate, cores 22 and 23 on both ends of a bar core 21 which is combined magnetically to a key cylinder are fitted to the positioning parts 9 and 10 The winding of a key coil 20 and an electron circuit part 3 to form a resonance circuit are assembled in a housing space 8 at the key plate head 4, and they are integrated by holding with a holder of resin mould or the like from both sides of the key plate The core parts 22 and 23 on both ends of the key coil 20 are positioned at the parts other than the metal parts, and an energy loss when the key coil 20 and a ring coil 220 are combined magnetically is reduced so as to present a sharp resonant performance Consequently, while a sufficient twisting strength can be maintained, the S/N ratio is improved, and the detecting accuracy of key data can be improved COPYRIGHT: (C)1991,JPO&Japio

Takashi Kimura

Papers

Key system for a vehicle

Key with built-in electron circuit and its forming method