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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5778321 | Procedure for automatically replacing a user identification module in a mobile terminal in an mobile radio network A procedure for automatically replacing a user identification module of a terminal in a communication network includes storing in a memory of the terminal a message indicating the detection of a problem with writing and/or reading the user identification ... | 07/07/1998 |
| 5771468 | Multi-purpose base station The invention provides a modular base station for use in a plurality of telecommunications systems where the systems operate according to different standards. The base station comprises a chassis having means for removably mounting system components to al... | 06/23/1998 |
| 5761610 | Method and apparatus for dynamic radio communication menu A radio communication device menu system includes a memory (232) storing menu items. A controller (220) is coupled to the memory. A user controlled input (106) is coupled to the controller for manually inputting control signals to the controller. A displa... | 06/02/1998 |
| 5761624 | Method and apparatus for controlling and recording cellular phone transactions using an integrated circuit card A cellular phone call management system using a microprocessor-controlled remote card reader interface for a cellular telephone system to record calls onto a card as they are placed or received. A microprocessor reads information from a card placed in the... | 06/02/1998 |
| 5742910 | Teleadministration of subscriber ID modules A mobile telephone remote programming system and method includes a mobile telephone that has a subscriber ID module (SIM) which can store control data for voice message actuation and vocoder parameters. The telephone is adapted to receive digital programm... | 04/21/1998 |
| 5729591 | Credit card operated cellular phone A credit card operated cellular telephone includes an interface assembly that allows addition of a credit card reader and an electronics board thereto. The interface assembly mates with the existing telephone and battery, and allows a cellular telephone t... | 03/17/1998 |
| 5724655 | Method and apparatus for operating a communication unit consisting of multiple devices In a wireless communication system (100), a communication unit (102) may operate in the following manner. Upon initiation of a service request, the communication unit (102) transmits the desired service request to an application device (115) over a second... | 03/03/1998 |
| 5711013 | Conformant compact portable cellular phone case system and connector A compact portable cellular telephone extension that provides additional electronic functions is implemented in a case attachable to a first external surface of the cellular phone to form a physically integral unit. A connector is supported by the case an... | 01/20/1998 |
| 5699406 | Arrangement for securing the SIM card in a mobile telephone The invention relates to an arrangement for securing the SIM card (6) in a mobile telephone. By means of the arrangement according to the invention the SIM card (6), which is normally held in place by the spring force exerted by a spring (11) attached to ... | 12/16/1997 |
| 5699405 | Modem card for portable radiophone A communication information signal from a portable radiophone is concurrently decoded by two decoder units to decode data and voice signals. A data signal portion of the information signal is decoded by a data decoder and then a data signal sensor decides... | 12/16/1997 |
| 5689821 | Device for controlling extension and retraction of an antenna In an IC memory card radio modem including an antenna, intensity of electric field received by the antenna is measured by an electric field intensity detector. An antenna driver is controlled such that, when the electric field intensity exceeds a predeter... | 11/18/1997 |
| 5687216 | Apparatus for storing messages in a cellular mobile terminal A mobile communications terminal is provided with includes a receiver apparatus for receiving messages, an internal memory for storing the messages received by said receiver means, a removable external memory for storing messages, and wherein cooperation ... | 11/11/1997 |
| 5675627 | Integrated pager and calling card The functions of a paging device and the calling card or any other type of credit card having integrated into one unit which is referred to as a smartcard and has approximately the dimensions of a standard credit card. The smartcard not only receives the ... | 10/07/1997 |
| 5675628 | Method and apparatus for enabling roaming of subscriber among plural mobile radio systems, using mobile equipment accepting removable subscriber identity module A subscriber identification module (SIM) for storing user-identities and other user specific information and thereby enabling access to the service of the radio system. One of the user identities is a Temporary Mobile Subscriber Identity (TMSI) used for u... | 10/07/1997 |
| 5669069 | Card reading configuration in a mobile phone The invention relates to a card reading configuration in a mobile phone, comprising a space in the housing (1) for the SIM card (8), the space being covered by the battery unit. The walls (2) defining the space laterally are provided with grooves (6), whi... | 09/16/1997 |
| 5659890 | Portable radio apparatus equipped with function to display received message information A portable radio apparatus comprises: a receiving unit for receiving message information transmitted by a radio wave; input/output terminals for transmitting/receiving information between the portable radio apparatus and an external device equipped with a... | 08/19/1997 |
| 5657373 | Digital mobile telephone system in which each subscriber is assigned a telephone number and several subscriber identity module (SIM) cards A digital mobile communication system comprises a switching center (MSC), a subscriber register (HLR) connected thereto, mobile terminals, such as mobile telephones, and subscriber-linked subscriber's cards, such as smart cards. Each subscription is alloc... | 08/12/1997 |
| 5655009 | Modem unit A modem unit is adapted to be coupled between a land or radio telephone line and a terminal equipment. The modem unit is provided with a modem circuit for modulating data received from the terminal equipment and for demodulating data transmitted to the te... | 08/05/1997 |
| 5630159 | Method and apparatus for personal attribute selection having delay management method and apparatus for preference establishment when preferences in a donor device are unavailable An application device (401) is connectable with a donor device (541) such as a portable memory card (560) or widely accessible central database (550). The donor device (541) stores and provides preferences to the application device (401). The donor device... | 05/13/1997 |
| 5617449 | IC memory card type radio modem An IC memory card type radio modem includes a connecting portion, a radio section, a radio interface unit section, a channel selection circuit section, a terminal interface unit section, and a control section. The connecting portion can be connected to a ... | 04/01/1997 |
| 5615250 | Portable telephone set for use with IC card A portable telephone set includes a main section thereof, an IC card, and a battery pack, which are removably connected to each other. The battery pack has an L-shaped rib to provide a slot in which the IC card is inserted. When the IC card is inserted in... | 03/25/1997 |
| 5604787 | Method and apparatus for transferring information to a device in a communication system A smart card (100) is equipped with an internal time-of-day clock and calendar (106). Between the smart card (100) and a subscriber unit (209, 300), into which it is inserted, there is a communication of the subscriber's identity and a negotiated agreemen... | 02/18/1997 |
| 5586166 | Chip card A first chip card is provided for use in a telecommunications terminal which is connected in a telecommunications network. The first chip card exchanges signaling and data directly with the telecommunications network at the telecommunications terminal. Th... | 12/17/1996 |
| 5572573 | Removable user interface for use with interactive electronic devices An improved user interface for use in interactive electronic devices. The user interface eliminates the complexity and ambiguity problems encountered in conventional interfaces through the incorporation of a physical overlay designed for use in cooperatio... | 11/05/1996 |
| 5566226 | Portable telephone apparatus which can be connected to an external apparatus without using an adapter For use in combination with a data processing apparatus (50) which is provided with a card connecting portion for connecting a card-shaped device therewith, a portable telephone apparatus (20) has a card-shaped portion which can be connected to the card c... | 10/15/1996 |
| 5550897 | Cellular telephone calling system using credit card validation The cellular telephone credit card calling system works in conjunction with a cellular telephone, a local cellular network and an IXC in a telecommunications network. The cellular telephone has a handset and a transceiver unit coupled together by a power ... | 08/27/1996 |
| 5519758 | Radiotelephonic process for locating mobile subscribers and a radiotelephone installation for implementing the process In a radiotelephonic process for locating mobile subsribers, a profile is created from data recorded in a recording means in the form of a first work file and obtained during the movements of a particular mobile subscriber during a first predetermined obs... | 05/21/1996 |
| 5497411 | Telecommunications card-access system The present invention is directed to a access-control system for a telecommunication network which connects a serving telecommunication system to a plurality of telecommunication access terminals, comprising: at least one portable memory devices card, for... | 03/05/1996 |
| 5493437 | External communication link for a credit card pager A credit card pager having a casing surrounding a substrate and electronic circuitry mounted on the substrate. An information connection including at least one molded waveguide having a core with a photonic device mounted at one end and a second end of th... | 02/20/1996 |
| 5490202 | Attachable and detachable additional device for use with a portable telephone for electrically connecting with the portable telephone external equipment An additional device for a portable telephone electrically connects a battery pack to a portable telephone main body. The additional device has first connecting means for detachably connecting the additional device to the portable telephone main body, and... | 02/06/1996 |
| 5487099 | Portable telephone having an additional device for making external connections The present invention relates to a portable telephone, and an object of the present invention is to provide a portable telephone and an additional device for the portable telephone capable of improving the portability of the portable telephone in the case... | 01/23/1996 |
| 5485505 | Apparatus and method for remotely initiating operation of a cellular telephone An apparatus for activating a cellular telephone (10) within a cellular telecommunications network. A PCMCIA card (62) interacts with a controller (50) to display required programming information and questions. A user of the cellular telephone (10) inputs... | 01/16/1996 |
| 5465401 | Communication system and methods for enhanced information transfer A communication system (20) is provided with multiple purpose personal communication devices (50 and 150). Each communication device (50 and 150) includes a touch-sensitive visual display (60 and 160) to communicate text and graphic information to and fro... | 11/07/1995 |
| 5448765 | Radio telephone having removable memory containing all essential software, including control parameters A radio telephone or the like, comprising including a radio transceiver, a microprocessor circuitry, a work memory, and a reading device in which a removable memory can be inserted to enable reading under control of the microprocessor circuitry, the memor... | 09/05/1995 |
| 5444764 | Method of providing a subscription lock to a radiotelephone system A radiotelephone system (100) includes a radiotelephone (103) having a subscription lock and a removable subscriber identification module (SIM) card (105) containing an international mobile subscriber identification (IMSI). The subscriber lock is used to ... | 08/22/1995 |
| 5444869 | Method and apparatus in a communication device for automatic transfer of control from an internal processor to an external computer A method and apparatus for automatically transferring control of a portable radio communication device (101) having an internal processor (108) and a first data port (118) comprise transferring (412, 414) control from the internal processor (108) to an ex... | 08/22/1995 |
| 5430892 | Receiver having an individual selective call function and a security function for preventing unauthorized use of the receiver A receiver with an individual selective call function includes a ROM for storing an individual selection number in which a secret number of the receiver is registered. A data control unit compares a secret number registered in its own memory and the secre... | 07/04/1995 |
| 5418840 | Device and method for telephone interconnections for a communications network with independent stations A specific module of a communications network comprises (i) first and second telephone interface mechanisms respectively connected to telephone channels, (ii) interconnection mechanisms between these first and second interfaces, and (iii) a processing mec... | 05/23/1995 |
| 5418837 | Method and apparatus for upgrading cellular mobile telephones An apparatus for upgrading a mobile telephone, the mobile telephone having a main memory the apparatus comprising a module reader provided in the mobile telephone and a software upgrading module card adapted to be temporarily connected to the mobile telep... | 05/23/1995 |
| 5408513 | Portable credit card terminal interface A portable credit card terminal interface is disclosed for verifying credit information. The portable credit card terminal interface is adapted to be removably connected to a credit card terminal and to a telephone station. The credit card terminal interf... | 04/18/1995 |
