Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 5850607 | Method and apparatus for providing control handoff in a cellular telecommunications system In a cellular telecommunications system having mobile exchanges, base stations and user mobile stations roaming in the system, the mobile exchanges are arranged to provide inter-exchange soft handoff with diversity combining. The mobile exchanges further ... | 12/15/1998 |
| 5850605 | Method and apparatus for dynamically grouping transmitters for message transmission in a communication system A communication system (100) for dynamically selecting transmitters (115) for message transmission includes the transmitters (115) for sending transmission signals and a portable messaging unit (105) for receiving the transmission signals, calculating sig... | 12/15/1998 |
| 5848063 | Method and apparatus for hard handoff in a CDMA system In a communications network, a network user communicates through a remote unit with another user via at least one base station. The communications network includes a first mobile switching center which controls communications through a first set of base s... | 12/08/1998 |
| 5844898 | Method of radio channel switching over in a mobile radio communications system A handover method for a mobile radio communications system, which reduces the disconnection time when the radio channel is switched from one radio base station to another radio base station. When the electric field received from a first radio base station... | 12/01/1998 |
| 5845208 | Method for estimating received power and a receiver A receiver, and a method for estimating received power in a cellular radio system having in each cell at least one base station communicating with mobile stations within its coverage area. The mobile stations measure strength of the signal received from a... | 12/01/1998 |
| 5845211 | Wireless digital network A wireless Integrated Services Digital Network ("WISDN") is disclosed. The WISDN replaces conventional wireless networks with a plurality of network elements including intelligent cellsites ("ICSs"), a central site controller ("CSC"), a billing aggregator... | 12/01/1998 |
| 5845192 | Wireless base station A wireless base station operating in a system in which wireless base stations are used to provide a link between a remote fixed part and a handset and method of operation of the same. The wireless base station prevents unnecessary handover initiation by t... | 12/01/1998 |
| 5842127 | Method for a mobile to register with one or more cell sites and method for paging the mobile A wireless communication system includes switching infrastructure (150) and at least one location area ("LA") having a multiplicity of cells (the "multiple-cell LA") (103). When a mobile (100) enters a cell belonging to the multiple-cell LA, the mobile is... | 11/24/1998 |
| 5839072 | Routing an incoming call to a ported mobile station within a telecommunications network A centralized database connected to the next to last Service Switching Point (SSP) within a Public Switched Telephone Network (PSTN) interfacing with a ported Public Land Mobile Network (PLMN) stores correlation data correlating a network address represen... | 11/17/1998 |
| 5832383 | Mobile communication method and system In a mobile communication method, when a terminating call to a mobile station is generated, one of subscriber lines which is connected to a local switch and assigned to the mobile station is captured. A mobile station identification number defined in corr... | 11/03/1998 |
| 5832363 | Mobile communication system including service management of traffic machines A mobile communication system including operation management of traffic machines, includes mobile radio terminals for receiving predetermined communication data, and which can be carried by a user of mobile communication; at least one traffic machine for ... | 11/03/1998 |
| 5826191 | Dual mode network call forwarding activation and deactivation An apparatus and method, in a telecommunications network having a first and a second system, for activating and deactivating call forwarding from a dual mode subscriber station's number in the second system to the subscriber station's number in the first ... | 10/20/1998 |
| 5826188 | Method and apparatus for handing off calls between differing radio telecommunication networks A method for handing off calls between differing radio telecommunication networks recognizes (302) a desire for an inter-network hand-off. When a Subscriber Unit (120) (SU) identifies (304) a new network, a hand-off with the new network can be requested (... | 10/20/1998 |
| 5822693 | Method and apparatus for controlling a base station utilizing a dual mode mobile station A method and apparatus for controlling a base station of a first telecommunications system using control information generated in a second telecommunications system and transferred to the base station through a mobile station capable of operating in both ... | 10/13/1998 |
| 5822696 | Selecting a communications channel for a mobile station based on handover intensity A threshold limit representing the number of handovers allowed to be performed by a mobile station within a predetermined period of time is assigned to a serving mobile network. In case a fast moving mobile station exceeds the prescribed number of handove... | 10/13/1998 |
| 5819181 | Apparatus and method for mitigating excess time delay in a wireless communication system A wireless communication system (200, 300, 400, 500) mitigates the effects of excess timing delay caused by varying lengths of communication paths. In one general implementation, a transition communication path (206, 323, 329) is used to transfer a time-a... | 10/06/1998 |
| 5812540 | Method and apparatus for mitigating an orphan condition in a spread-spectrum communication system An orphan condition is mitigated in a spread-spectrum communication system by determining when a remote unit (113) is likely to become an orphan (315) and adjusting remote unit (113) operating parameters (360) to force additional base stations (101, 102) ... | 09/22/1998 |
| 5809430 | Method and apparatus for base selection in a communication system A personal communication system (100) having power control provided by a radio port control unit (122), provides for portable radio controlled optimum base station selection. Multiple base stations 102, 124, and 130 transmit channel signals including a co... | 09/15/1998 |
| 5805995 | Channel reservation and power control for improved handoff performance A method and system for handing over on-going communications to a target cell including a plurality of low power channels, for handling ongoing calls, and a plurality of higher power channels for handoff. The ongoing call is switched from a low to a highe... | 09/08/1998 |
| 5805580 | Cell Switching Network The present invention discloses a cell switching network which includes a cell switch (AS) coupled to a first terminal (T1) and a function unit (FU). The cell switch is also coupled to a second and a third terminal (T2,T3) via a cell switching access netw... | 09/08/1998 |
| 5805575 | Apparatus and method for providing a beacon signal in a wireless communication system A beacon signal (313) is provided in a wireless communication system using a hybrid matrix (303) and an inverse hybrid matrix (306). Using an unused port of the hybrid matrix (303), the beacon signal (313) is combined with traffic signals (316) intended f... | 09/08/1998 |
| 5805645 | Control channel synchronization between DBC and Cellular networks A downbanded Cellular network (DBC) is provided to supplement an adjacent or coincident standard Cellular network. The control channels used by the DBC and standard Cellular network are synchronized to ensure proper hand-off between the DBC network and th... | 09/08/1998 |
| 5799252 | Radio communication system with plurality of wired lines A radio communication system including a network connecting apparatus for establishing communication between a mobile subscriber terminal and another subscriber terminal and a plurality of radio base stations. At least one wired communication line connect... | 08/25/1998 |
| 5799243 | Cellular radio system and a method for measuring the interference level For operating a cellular radio system which is subject to interference, the system measures the interference level on at least one radio frequency channel, and reports the measured interference levels, and decisions are made on system level actions using ... | 08/25/1998 |
| 5796727 | Wide-area wireless lan access A method and apparatus is provided which permits mobile computers equipped with modems for cellular telephone systems to obtain various classes of data communication services, as well as voice service, including taking part in local-area networks. The LAN... | 08/18/1998 |
| 5794149 | Base station controlled handoff method and apparatus A handoff method and apparatus are disclosed for use in a wireless communication network in which a base station servicing a call selects a handoff candidate base station based in part on subscriber-specific information. For example, in some wireless netw... | 08/11/1998 |
| 5790955 | Mobile communication system which performs communication restriction control In a mobile communication system, a mobile communication switching center includes a communication restriction control section for calculating a communication channel usage from the traffic volume of communication channels, comparing the usage with first ... | 08/04/1998 |
| 5787345 | Automatic voice prompts in a land mobile radio system A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters and the mobile radios in the system include both a voice co... | 07/28/1998 |
| 5784695 | Method and apparatus for handover control in a satellite based telecommunications system A method and apparatus are provided for controlling mobile and base stations (14 and 16) during satellite (12) based telecommunications to perform scheduled handovers between two communications channels (26 and 27). The base station (16) determines when a... | 07/21/1998 |
| 5781862 | Method for controlling functions for changing radio areas of communications terminal devices In a method for controlling functions for a change of radio area of communications terminal devices, in a program module structure of a subscriber module of wireless communications systems, a higher priority is allocated to the program modules for process... | 07/14/1998 |
| 5778075 | Methods and systems for mobile terminal assisted handover in an private radio communications network Mobile assisted handover of an encrypted traffic connection between linked base stations of a private radio communications network are provided in a system including a plurality of base stations and a mobile terminal. The mobile terminal detects a signal ... | 07/07/1998 |
| 5774809 | Simplified mobile assisted handoff of signal between cells In the method of this invention, a mobile station is constructed to receive predetermined signals from neighboring base stations as an indication of received signal strength. These signals are compared to the current traffic signal strength indicator and ... | 06/30/1998 |
| 5774808 | Method for channel allocation in a cellular communication system A method for allocating radio channels in a cellular communication system, each cell having at least one base station communicating with the subscriber terminal equipment by means of a traffic channel specific for each connection. The base station monitor... | 06/30/1998 |
| 5774814 | Multiply-detected macrodiversity method and system for wireless communications A method and system for detecting and receiving radio signals employ a modified macrodiversity scheme known as multiply-detected macrodiversity (MDM) in which multiple versions or replicas of a signal are detected by a plurality of receivers or base-stati... | 06/30/1998 |
| 5771275 | Use of ISDN to provide wireless office environment connection to the public land mobile network An integrated services digital network (ISDN) connection is maintained between a wireless office environment type private cellular telephone system and a public access cellular telephone system. In particular, an mB+D ISDN connection (where m=2, 23 or 30)... | 06/23/1998 |
| 5761608 | Method and apparatus for inter-node handoff of a radio frequency communication unit A method for a radio frequency communication unit (110) (CU) to hand off from a losing node (120) to a gaining node (122) estimates a gaining node uplink time (210) and a gaining node uplink frequency (212), which the gaining node uplink signal comprises.... | 06/02/1998 |
| 5761618 | Updating technique for downloading new system identification (SID) list into a handset A cellular telephone system is upgraded by modifying subscriber units for selective service provider acquisition during roaming. Priority of acquisition is given to those service providers associated with the home service provider. These preferred service... | 06/02/1998 |
| 5761619 | Distributed telecommunications system A cellular telecommunications system has a plurality of nodes, each for performing at least one of a number of cellular telecommunications system functions, including base station, speech coder, control processing, signal processing, local handoff, locati... | 06/02/1998 |
| 5758285 | Increasing the capacity of a personal communication service system by multiple connections to individual telephone links Assigning one telephone link to each wireless set and connecting each of the assigned telephone links to all of a plurality of PCS systems. Each of the PCS systems has a plurality of base stations on which wireless sets can register. When an incoming call... | 05/26/1998 |
| 5758287 | Hub and remote cellular telephone system The present invention discloses a hub and remote cellular system having RF generating equipment located at a centralized hub, and RF front end equipment located at each of a plurality of remote omni-directional cell sites. The centralized hub distributes ... | 05/26/1998 |
