Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7400877 | Method of supporting multiple service levels in a wireless data network A wireless data network distinguishes among different users connected to the network and associates each user with a service class that offers a selected level of service. The base station in the network queries the user for its unique user identification code and a... | 07/15/2008 |
| 7283844 | Multi-beam antenna wireless network system A wireless network system that utilizes a multi-beam antenna to communicate with multiple remote stations. The system includes a hub and one or more remote stations. The hub is connected to a source which requires communication with the remote stations, in order to ... | 10/16/2007 |
| 7197323 | Wireless communication method and system for coordinating paging occasions on a common paging channel A method of paging a plurality of users by synchronizing user equipment (UE) specific paging and Point-to-Multipoint (PtM) user group paging to reduce power consumption when the UE is in a discontinuous reception state. The UE identities are defined such that paging... | 03/27/2007 |
| 7174177 | System and method for providing indication of maximum teleservice payload size in a wireless communication network A system and method for providing improved teleservice messaging to a mobile station in a wireless communication network are disclosed. In preferred embodiments, an indication is provided to a network sending entity of the maximum teleservice payload size that can b... | 02/06/2007 |
| 7167079 | Method of setting the output power of a pager to aid in the installation of a wireless system A method of setting up a remotely controlled wireless thermostat system for regulating heating and cooling a building. A radio equipped pager is connected to the programmable controller of the thermostat and a self test is conducted to determine if the system can su... | 01/23/2007 |
| 7054629 | Method and means for redistribution of subscriber information in UMTS networks where the nodes are arranged in pools The present invention relates to method and means for a system initiated subscriber information redistribution in order to achieve a load redistribution within a pool of core network nodes. The subscribers, that are affected by the redistribution, are determined by ... | 05/30/2006 |
| 7020477 | Paging incommunication systems The present invention refers to methods and systems for enabling paging and DRX in a hybrid cellular communication system comprising a core network (CN) and radio access network (RAN) employing different paging techniques. The core network is associated with a DRX p... | 03/28/2006 |
| 7019622 | Handheld electronic device including vibrator having different vibration intensities and method for vibrating a handheld electronic device A handheld electronic device includes a housing adapted to engage a holster, and a sensor having an input adapted to sense engagement of the housing with the holster and an output responsive to that engagement. The output includes an out-of-holster state and an in-h... | 03/28/2006 |
| 7006478 | Communicating over one or more paths in an interface between a base station and a system controller A mobile communications network includes base stations and a system controller, such as a serving GPRS support node (SGSN) of a General Packet Radio Service network. An interface, such as a Gb interface, is provided between each base station and the system controlle... | 02/28/2006 |
| 6999585 | Folding type portable communication device The present invention is intended to simplify operation of a folding type portable communication device 1 in making a switch or selection between a call reception vibration mode and a call reception sound mode. The device 1 has two communication units ... | 02/14/2006 |
| 6665521 | Method and apparatus for cooperative diversity The wireless communication system (100) uses a method of improving diversity gain by utilizing a first network (10) operating with a first protocol and at least a second network (20) formed from a plurality of cooperative wireless devices (22, 24, 26, 28,... | 12/16/2003 |
| 6658247 | Portable telephone terminal apparatus for receiving data and data receiving method therewith A data reception terminal apparatus and a data receiving method suitable for a music delivering system using a portable telephone terminal apparatus. When data is downloaded with a portable telephone terminal apparatus, received data is divided as blocks.... | 12/02/2003 |
| 6603389 | Method for indicating a delinquent response to a message from a selective call device A two-way selective call device (106) for determining if a response was received to a message transmitted to a designation device including at least one switch (216) to construct the message having at least an identifiable character. An address book desig... | 08/05/2003 |
| 6556820 | Mobility management for terminals with multiple subscriptions A scheme for providing mobility management for terminals with multiple subscriptions. The invention integrates Europe's Universal Mobile Telecommunications Standard (UMTS) subscriber identity module--specific procedures into single procedures, and which u... | 04/29/2003 |
| 6538561 | Data communication network for minimizing toll-charge dependent links and method of operation There is disclosed an inbound message receiving system for use in a wireless messaging system. The inbound message receiving system comprises: 1) a source base transceiver station capable of receiving a wireless message from a source mobile station dispos... | 03/25/2003 |
| 6515576 | Alphanumeric paging message system operating on the internet A message-sending system provides for entering an identifier uniquely associated with an intended recipient and a message for the intended recipient in a WEB page, and associating the identifier with the intended recipient's pager routing information from... | 02/04/2003 |
| 6434391 | Method and apparatus for channel pattern based managing inbound traffic in a two-way wireless messaging system A controller (112) defines (402) a channel pattern specifying a network destination for inbound channel traffic, a subscriber unit address group to which the channel pattern applies, and a predetermined time interval during which the channel pattern is to... | 08/13/2002 |
| 6429771 | Method and apparatus for limiting message loss and message latency in a messaging system A messaging system transmits to a subscriber unit (122) on a plurality of channels (410) operating concurrently. The system transmits (1108) control information for the subscriber unit on a control channel assigned to the subscriber unit, and transmits (1... | 08/06/2002 |
| 6392560 | Reminding device A reminding device to permit the user to determine, at a later date, using a portable device, whether a routine task to secure an object or piece of equipment has been performed.... | 05/21/2002 |
| 6374121 | System and method for enabling automatic performance of instrument functions An instrument includes a display screen which includes a bitmap graphical user interface including an on-screen menu, and a control element which enables movement of the on-screen menu corresponding to movement of the control element, enables the user to ... | 04/16/2002 |
| 6294979 | Radio paging receiver and radio receiver Disclosed is a radio paging receiver which has: a radio unit that receives a carrier wave modulated by a specific paging signal and a message signal following the specific paging signal; a demodulating unit that demodulates the modulated carrier wave into... | 09/25/2001 |
| 6289224 | Method and apparatus for starting an acknowledgment timer A target communication device (106) determines a length of time needed to transmit outbound information. The target communication device then transmits to a sending communication device (112) an indication of a timer value based on the length of time need... | 09/11/2001 |
| 6181945 | Optimization of paging cost in mobile switching system using a genetic optimization method The invention overcomes the inefficient conventional mobile paging methods that cause a bottleneck in the FOCC due to constraints of both the bandwidth and the limited number of radio frequency channels in mobile telecommunication systems. This is accompl... | 01/30/2001 |
| 6052064 | Method and apparatus in a wireless messaging system for dynamic creation of directed simulcast zones Base transmitters (116) of a wireless messaging system are pre-programmed (802) with location identifiers (216) for identifying the positions at which the base transmitters are located. In response to an inbound message from a portable subscriber unit (12... | 04/18/2000 |
| 6023230 | Method and apparatus for effecting channel acquisition Methods of and corresponding apparatus for scheduling messages on an operating channel (223) in a selective messaging system (200) for a messaging unit (235) include scheduling a first message, including a channel priority indication (511), addressed to t... | 02/08/2000 |
| 6002917 | Reference channel maintenance method for a wide area paging system A reference channel maintenance method for a wide area paging system connected to a public telephone network and having at least one reference frequency channel through which a paging signal can be transmitted is provided. When an incoming paging signal i... | 12/14/1999 |
| 5973614 | Radio paging system using radio selective paging receiver In a radio paging system, first and second radio units perform radio communication via a relay station. This system includes a radio selective paging receiver for receiving a radio wave from the relay station and generating a ringing tone to call a callee... | 10/26/1999 |
| 5953639 | Multi-beam encoding system for two-way paging In the context of a multi-channel paging system, a method and system for assigning a transmission time and a transmission channel to a pager message responsive to the location of the target of the pager message. This facilitates operation of a multi-pager... | 09/14/1999 |
| 5896096 | Paging receiver and a sequential vibrating method therefor A paging receiver having two warning modes, i.e., an audible mode and a vibrating mode, is provided. A vibrating motor of the paging receiver receives a voltage for controlling the level or intensity of vibrations provided by the motor. Various vibration ... | 04/20/1999 |
| 5886647 | Apparatus and method for wireless, remote control of multiple devices A transceiver is used to receive remotely-broadcast, radio frequency (rf) signals at a first frequency. The remotely-broadcast rf signals contain encoded, partial control commands as message packets. Each transceiver is adapted to respond only to signals ... | 03/23/1999 |
| 5774057 | Time measurement in a communications system, a communications system and a receiver for use in such a system A communications system includes apparatus for generating a succession of time message signals, a central station having a transmitter for transmitting the time message signals, at least a first receiver for receiving the time message signals and timer ci... | 06/30/1998 |
| 5703570 | Method and apparatus for indicating undelivered messages in a communication device A method and apparatus is for use in a radio communication system (100) for delivering a message from a system controller (102) to a selective call device. In the system controller (102) the method includes the steps of generating a first message intended... | 12/30/1997 |
| 5652783 | Method and apparatus for selectively encoding digital messages in a communication system A communication system providing selective encoding of digital messages (408) comprising a plurality of transmitting devices (116) and a plurality of receiving devices (122). The transmitting devices (116) transmit an encoded address (404), encoded messag... | 07/29/1997 |
| 5642397 | Paging system which combines a paging signal with a standard broadcast baseband signal An electronic paging system and method for transmitting paging signals over a broadcast network, such as a standard pre-existing commercial radio broadcast system, adds paging signals to a normal radio baseband signal for non-interferential co-transmissio... | 06/24/1997 |
| 5640442 | Technique for determining propagating and clear frequency to be used in wide area wireless data communications network A two-way communications system that provides ubiquitous wireless data communication services, such as throughout the continental United States, by using a network of only a few, widely distributed radio base station (RBS) sites and the existing paging ne... | 06/17/1997 |
| 5608723 | Methods and systems for secure wireless communication within a predetermined boundary A message signal which is to be securely communicated is encoded, using a preselected code, to generate an encoded signal. A radio frequency signal representative of the encoded signal is transmitted, wherein the radio frequency signal may propagate beyon... | 03/04/1997 |
| 5603088 | Method and apparatus for determining a quality level of an analog signal in a radio communication system A radio transmitter (103) transmits a cycle (320) including a digital portion (330) generated by frequency modulating a radio carrier with a digital signal and an analog portion (440) generated by amplitude modulating a radio carrier with an analog signal... | 02/11/1997 |
| 5565859 | Method of detecting a paging channel in a multi-frequency radio pager network In order to detect a paging channel assigned to a pager in a shorter time in a frequency divided pager network system, a plurality of paging channels given priorities in channel searching are separately assigned to the paging areas in a manner wherein reu... | 10/15/1996 |
| 5546411 | Method and apparatus for adaptively selecting a communication strategy in a selective call radio communication system A method and apparatus adaptively selects a communication strategy for communicating a message in a selective call radio communication system including a fixed portion (100) and a portable portion (101). The fixed portion (100) transmits (402) an alert si... | 08/13/1996 |
| 5535215 | Method and apparatus for providing control channels and message channels in a radio communication system A method and apparatus in a radio communication system (100, 101) provides simulcast control channels for a coverage area (500), and message channels transmitted in coverage zones (502) within the coverage area (500) on a time-division multiplex basis (FI... | 07/09/1996 |
