SECURITY SYSTEM

申请公布号：EP1423826(B1)

申请号：EP20020771817

申请日期：2002.05.02

申请公布日期：2014.07.09

申请人：

ERICSSON INC.

发明人：DENT, PAUL;SKUBIC, JANEZ

分类号：G07C9/00

主分类号：G07C9/00

摘要：<p>An access control system includes an access control device (20), a wireless communication device (100), and a central controller (40). The central controller issues authorization codes to the wireless communication device. The wireless communication device is used by an authorized party to enable or activate a protected function secured by an access control device. To enable or activate the protected function, the authorized party uses the wireless communication device to transmit an access request to the access control device, which responds by transmitting an authentication challenge to the wireless communication device. The wireless communication device must transmit a valid authentication response based on the authentication challenge and a valid authorization code stored in its memory. If a valid authentication response is received, the access control device enables or activates the protected function.</p>

PROCESS FOR THE PREPARATION OF AMINOCYCLO PENTANEALKENOIC ACIDS

MJOELKBIL.

FORDON, FOERSETT MED TVAO HJUL, SOM FRAMDRIVS MED HJAELP AV MUSKLERNA I BEN, ARMAR OCH BAOL.

NYA MELLANPRODUKTER OCH FOERFARANDE FOER FRAMSTAELLNING AV ORGANISKA SYROR.

FORANKRINGSELEMENT MED SPREDEBOESNING

A TRANDUSOR OF IMPEDANCE

A TURNER OF NTSC/PAL TYPE

MAGNETIC HEAD

A TIMETABLE

LUMINOUS ADVERTISING

SENSOR OF IMPULSE

EXCHANGE INTERFACE CIRCUIT

ELECTRIC WELDING DEVICE

HOT-WATER HEATER

PIPE CONNECTOR

FLASH AND MEAT ROASTED PAN

CODING CIRCUIT OF VIDEO SIGNALS

AUTOMATIC GAIN CONTROL CIRCUITS

TILTABLE CATHODE RAY TUBE DISPLAY DEVICE STRUCTURE

RAY BREAKING DEVICE