Quadrature signal generator with feedback type frequency doubler
The present invention has been made in view of the above mentioned problems, and an object of the invention is to provide a quadrature signal generator for generating I and Q signals while having a fe... Read More
Inventors: Oh, Seung Min; Kwon, Hyo Seok;, Assignee: Samsung Electro-Mechanics Co., Ltd. (Kyungki-do, KR) |
System and method for locating misplaced items
A system for locating lost keys or other items includes a compact, pocket-sized device that includes a key chain. The device includes a sound generator that generates a sound of sufficient volume to f... Read More
Inventors: Benvenuti, Kerrie;, Assignee: |
Voice mail intervention
The present invention comprises a system, method, and apparatus for retrieving a telephone call that has been diverted by a telecommunications exchange from a called user telephone to a voice mail sys... Read More
Inventors: McKee, Stephan W.;, Assignee: Ericsson Inc. (Research Triangle Park, NC) |
Wireless centrex call screen
The instant invention addresses this need for an untethered communication systems created by the paradigm shift towards a more flexible and decentralized working environment. The material described in... Read More
Inventors: Chow, Albert; Kim, Jinman; Walker, Hopeton; Wang, Spencer; Ying, Wenchu;, Assignee: AT&T Corp. (New York, NY) |
Method for associating one directory number with two mobile stations within a mobile telecommunications network
The present invention discloses a method and apparatus for correlating a single MSISDN number with two International Mobile Subscriber Identity (IMSI) numbers, each associated with a mobile station. A... Read More
Inventors: Boltz, David; Westbrook, Bret;, Assignee: Ericsson Inc. (Research Triangle Park, NC) |
Location updating in a cellular radio system
An object of the present invention is a cellular radio network in which the signalling load caused by both the paging of a subscriber and location updating is reduced. This is achieved in a cellular r... Read More
Inventors: Laatu, Juho;, Assignee: Nokia Telecommunications Oy (Espoo, FI) |
Control signal transmission in digital radio telephony
We claim: 1. A method of transmission of system broadcast control signals in time slots within fixed length time frames, comprising: coding said system broadcast control signals into data units, said ... Read More
Inventors: Albrow, Richard John; Black, Simon Alexander; Carter, Leigh; Goodings, Rupert Leslie Alexander; Martin, Paul Maxwell; Piercy, Neil Philip;, Assignee: Ionica International Limited (Cambridge, GB) |
Paging transceivers and methods for selectively retrieving messages
The present invention solves the problems described above with methods and systems for selective paging. A paging system notifies a paging transceiver that a message has been received but does not ini... Read More
Inventors: Helferich, Richard J.;, Assignee: |
Method and system for assigning multiple directory numbers (DN) to a personal communication system (PCS) telephone
What is claimed: 1. A method, for use in a switching system, for activating one of a plurality of directory numbers (DNs) assigned to a mobile telephone handset, said method comprising the steps of: a... Read More
Inventors: Ghafoor, Nasir;, Assignee: Nortel Networks Limited (St. Laurent, CA) |
Mobile terminal for transmission diversity CDMA communication system
What is claimed is: 1. A mobile terminal which transmits a control command to a base station which is provided with two or more antennas for transmission diversity, which comprises: a reception unit f... Read More
Inventors: Komatsu, Masahiro;, Assignee: NEC Corporation (Tokyo, JP) |
Telephone having an audio response function
OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a telephone having an automatic audio response function according to the present invention is provided with a microphone 30 which picks up noises sur... Read More
Inventors: Kanamaki, Masahiko;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Communication device and method of operation
OF EMBODIMENTS Embodiments of the present invention are described below, by way of example only. The block diagrams illustrate functional blocks and their principle interconnections and should not be... Read More
Inventors: Mekuria, Fisseha; Cavander, Hans; Ljungberg, Per;, Assignee: Telefonaktiebolaget L M Ericsson (Stockholm, SE) |
Portable electronic device
OF THE INVENTION At first, the first embodiment will be explained with reference to FIG. 1. In the first embodiment, when external X-rays with a certain intensity or more are detected, the gain of th... Read More
Inventors: Iwahara, Hiroki; Horiguchi, Yoshinori;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
Portable communication apparatus having a hierarchical menu system and a dynamic menu
It is an object of the present invention to provide an improved menu system for a portable communication apparatus, such as a mobile telephone. More particularly, the present invention aims at providi... Read More
Inventors: Aberg, Kristoffer;, Assignee: Telefonaktiebolaget L M Ericsson (publ) (Stockholm, SE) |
Method of and apparatus for pilot channel acquisition
What is claimed is: 1. A method of acquiring a pilot channel in a Code-Division Multiple Access system, the method comprising the steps of: setting an early detection threshold (EDT) parameter to a fi... Read More
Inventors: Storm, Brian D.; Krause, David J.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Paging of mobile station in a cellular radio system
OF THE INVENTION The present invention may be applied in connection with any mobile communications system of the cellular type. The system is described hereinafter by way of example primarily in conn... Read More
Inventors: Verkama, Markku;, Assignee: Nokia Telecommunications Oy (Espoo, FI) |
Base station synchronization for handover in a hybrid GSM/CDMA network
It is an object of the present invention to provide methods and apparatus for use in a mixed TDMA/CDMA cellular communications network. It is a further object of some aspects of the present invention ... Read More
Inventors: Grilli, Francesco; Jain, Avinash;, Assignee: Qualcomm Incorporated (San Diego, CA) |
Radio communication booster for portable radio transceivers
What is claimed is: 1. A radio apparatus for a mobile radio, comprising an antenna output connectable with an input of a supplementary HF amplifier circuit for operating the radio apparatus at a highe... Read More
Inventors: Kaesser, Juergen;, Assignee: Robert Bosch GmbH (Stuttgart, DE) |
Paging system for washers and dryers
In the view of the foregoing disadvantages inherent in the known types of remote control devices now present in the prior art, the present invention provides an improved paging system for washers and ... Read More
Inventors: Adler, Maury;, Assignee: |
Method for executing automatic calling function in a cordless telephone system
Accordingly, it is therefore an object of the present invention to provide an improved cordless telephone system comprising a base station and a "flip-type" remote handset having an automatic calling ... Read More
Inventors: Kim, Jong-Kwang;, Assignee: SamSung Electronics Co., Ltd. (Suwon, KR) |
Image trap filter
OF THE INVENTION Referring now to the drawing, in which like reference numbers refer to like elements throughout, FIG. 1A shows an image trap filter for filtering an image signal from a radio frequen... Read More
Inventors: Imbornone, James F.; Mourant, Jean-Marc;, Assignee: International Business Machines Corporation (Armonk, NY) |
Wireless system for alerting individual to incoming telephone call
The goal of the invention disclosed here is to provide a means for indicating an incoming telephone call to some individuals, but in such a way as to avoid disturbing other individuals, such as custom... Read More
Inventors: Will, Craig Alexander;, Assignee: |
Telephone communication system
What is claimed is: 1. In a telephone communication system of the type wherein a plurality of stations are adapted to communicate over any one of a plurality of conductors connected to each of the sta... Read More
Inventors: Schneider, Alan A.; Flower, Ronald J.; Bowser, George C.; Kenyon, Lewis C.;, Assignee: Catalyst Research Corporation (Baltimore, MD) |
Restricted access telephones for logical telephone networks
This invention, restricts access for members of a logical network or, in an alternate operating mode, provides call authentication for members of such logical network. That network may be a government... Read More
Inventors: Weir, Earline Madsen;, Assignee: |
Combined rear view mirror and telephone
The present invention addresses the above stated problems, and others, by providing an improved vehicular cellular phone as detailed hereinafter. The subject cellular phone is a rearview mirror combin... Read More
Inventors: Baratono, Ronald D.;, Assignee: |
Mobile telephone device system having steal prevention function
What is claimed is: 1. A mobile telephone device having a preassigned call number and comprising: a power supply unit for supplying electric power through a power supply line and removably attached to... Read More
Inventors: Koizumi, Fumiaki;, Assignee: NEC Corporation (Tokyo, JP) |
Circuit for indicating loss of portable telephone and control method thereof
Therefore, it is an object of the present invention to provide an improved portable telecommunications process and device. It is another object to provide a circuit and method for a portable telephone... Read More
Inventors: Park, Tae-Guen;, Assignee: SamSung Electronics Co., Ltd. (Suwon, KR) |
Portable terminal device
In view of the foregoing, an object of the present invention is to provide a portable terminal device that can help users carry out data communication without difficulty even in an environment where t... Read More
Inventors: Kabe, Masayuki;, Assignee: Sharp Kabushiki Kaisha (Osaka, JP) |
Wireless system for the communication of audio, video and data signals over a narrow bandwidth
The bandwidth limitation problem is overcome by a wireless communication unit comprising at least one digital transceiver operable to transmit and receive compressed video and audio signals over a fix... Read More
Inventors: Rostoker, Michael D.; Daane, John; Jaggi, Sandeep;, Assignee: LSI Logic Corporation (Milpitas, CA) |
Security structure with electronic smart card access thereto with transmission of power and data between the smart card and the smart card reader performed capacitively or inductively
The invention teaches that these and other objects can be accomplished by the use of an inductance (or inductor) which is provided with a backing. For example, this inductance can be wound, etched or ... Read More
Inventors: Kirchhoff, Gerhard;, Assignee: Dorma GmbH + Co. KG (Ennepetal, DE) |
Ring Tones 
