| Patent Number |
Title Of Patent |
Date Issued |
| 7308083 |
Message durability and retrieval in a geographically distributed voice messaging system |
December 11, 2007 |
| A message retrieval subsystem comprises a voice extensible mark-up language browser, a message server, and a message library. The VXML browser is configured with an application programming interface that enables a subscriber of a distributed voice messaging service to request a store |
| 7221740 |
Auto block and auto discovery in a distributed communication system |
May 22, 2007 |
| A voicemail system enabling various components of the voicemail system to be distributed geographically yet operate as a seamlessly integrated system is disclosed. A signal gateway interfaces with a telephone network. In addition, one or more media servers interface with the signal g |
| 7197121 |
Audio chunking |
March 27, 2007 |
| A voice mail system that allows for the delivery of voice messages by chunks, thereby optimizing the delivery of the information. When a subscriber attempts to listen to his or her voice mail message, the header information for the first voice mail message is down loaded and played b |
| 7180986 |
Enhanced voicemail system |
February 20, 2007 |
| An enhanced Voice extensible Markup Language (VXML) based voicemail system that has a distributed architecture and methods for implementing enhanced VXML based voicemail systems are disclosed. The voicemail system includes a media server, which is in communication with a telephone networ |
| 7158785 |
Service level indication and registration processing in a wireless communication device |
January 2, 2007 |
| A method and apparatus for service level recognition and registration processing in a wireless communication device are provided. According to one aspect of the present invention, a method is provided for transitioning between service modes and indicating a current service mode to a |
| 7100203 |
Operating session reauthorization in a user-operated device |
August 29, 2006 |
| An authorization-update process for use in a user-operated device re-authorizes an operating session after a rapid idle timeout using the authorization-update process, which has fewer steps than a normal authorization process. The re-authorization process can require only a single en |
| 7065182 |
Voice mail message repositioning device |
June 20, 2006 |
| A voice message repositioning process is provided for a voice message system that stores voice messages for a user of the system and provides feedback to the user of the progress of repositioning the playback of a voice message. A voice message is repositioned upon receipt of a command |
| 6965769 |
Testing center |
November 15, 2005 |
| A network operations center comprised of hardware and software that tests paging devices, such as two-way paging devices to determine that they conform to a specified protocol. |
| 6938074 |
World Wide Web access for voice mail and page |
August 30, 2005 |
| A method and apparatus for providing subscribers with an integrated message processing system. The message processing system allows for the receipt, transmission and management of messages. Allowable message types include voice messages, pages, facsimile messages and electronic mail mess |
| 6600481 |
Data entry apparatus and method |
July 29, 2003 |
| A pager capable of origination of and transmission of messages. The pager, in one embodiment, features two-way communication capability and stores both a transmit and receive antenna within a single housing. The pager also features a data entry device which allows entry of alphanumeric |
| 6557134 |
ARQ method for wireless communication |
April 29, 2003 |
| Forward and Reverse Channel Automatic Repeat reQuest (ARQ) communication is described in which a Forward Channel Automatic Repeat reQuest (ARQ) session between a first unit and a second unit is performed, in which a command is send to the second unit to start a forward channel ARQ sessio |
| 6466801 |
Two-way communication device with transmission of stored signal directly initiated by user |
October 15, 2002 |
| A circuit for use in a two-way pager of a paging system to transmit voice messages. The circuit includes: a microphone to receive an analog audio signal provided by a user; an analog-to-digital (A-D) converter coupled to the microphone; a memory; a processor coupled to the memory and to |
| 6421708 |
World wide web access for voice mail and page |
July 16, 2002 |
| An integrated message processing system is provided. The message processing system allows for the management of a plurality of messages all within an integrated graphical environment. Allowable messages types include voice messages, pages, facsimile messages and electronic mail messages. |
| 6392990 |
Method for implementing interface redundancy in a computer network |
May 21, 2002 |
| A method and system for recovering transparently from a network interface failure. The method is to be run in a computing device on a network with multiple peer computing devices, having redundant network interfaces connected with redundant cables. The method transparently recovers from |
| 6304842 |
Location and coding of unvoiced plosives in linear predictive coding of speech |
October 16, 2001 |
| A method of encoding signal segments which represent unvoiced plosives. The signal segments to be encoded are contained within a speech signal divided into m=1, . . . , N frames. Each frame is subdivided into l=1, . . . , L subframes. The speech signal has a gain g.sup.m (l) within each |
| 6282428 |
Two-way paging system having random reverse channel slot scheduling |
August 28, 2001 |
| In a two-way paging system including a paging terminal, a plurality of paging transmitters, a plurality of paging receivers, and a plurality of two-way paging units, the plurality of two-way paging units transmitting reverse channel messages to the paging receivers in a time division |
| 6269131 |
Physical channel estimator |
July 31, 2001 |
| A physical channel estimator for a communication system using pilot symbols and an equalizer uses a model of the system in which the impulse response of the physical channel is considered separately from the impulse responses of the pulse shaping filters in the transmitter and receiver o |
| 6269080 |
Method of multicast file distribution and synchronization |
July 31, 2001 |
| The present invention involves a method for multicast file distribution and synchronization in data networks. Specifically, the present invention includes a mechanism for efficient and reliable distribution of a data file from a single source to a large number of receivers using multicas |
| 6260168 |
Paging system having optional forward error correcting code transmission at the data link layer |
July 10, 2001 |
| A method and system for performing optional or selective forward error correction (FEC) on data within the data link layer before the data is transmitted. First, a determination is made as to what data in the data link layer requires to be FEC encoded. Next, the data link layer data |
| 6253062 |
Voice information service networking system |
June 26, 2001 |
| A system for distributing voice information service messages (VISMs) to subscribers through their voice pagers is provided with a voice information service workstation where VISMs are recorded, and a voice information service terminal which converts the VISMs into voice pages and tra |
| 6240088 |
Method for two-stage data transmission |
May 29, 2001 |
| A method is disclosed for sequential transmission of at least two sub-packages of the data package from an electronic communication transmitter to an electronic communication receiver. A first sub-package of the data package in a form comprehensible to the user of the electronic comm |
| 6232969 |
Device for composing or editing a string of characters |
May 15, 2001 |
| A device for composing or editing a string of characters representing information, such as a text message, comprises a character string display for displaying a character string being composed or edited and a character selection display for displaying a set of characters for use in compo |
| 6195533 |
Method for storing an application's transaction data in a wireless messaging system |
February 27, 2001 |
| A method for storing transaction data for an application in a wireless messaging system is disclosed. Applications can be used to allow paging messages to be entered into a wireless messaging system from external systems such as E-mail or the World Wide Web. Such applications may be |
| 6173157 |
Method of registering and controlling registration data for new and roaming pagers in a paging s |
January 9, 2001 |
| A method for registering and controlling registration data for new and roaming pagers in a paging system. Messages for the pagers pass through an input messaging switch to the pager's home messaging switch, from which the messages are sent to an output messaging switch to be transmitted |
| 6173011 |
Forward-backward channel interpolator |
January 9, 2001 |
| An interpolator having a linear phase response has a first stage implemented with an IIR filter to achieve the narrow transition bandwidth with relatively few filter coefficients. Zero-stuffing and filtering are used to achieve the interpolation. A forward-backward filtering methodol |
| 6169971 |
Method to suppress noise in digital voice processing |
January 2, 2001 |
| A method of suppressing noise in an input signal having voice components and noise components is provided. The method is an automatic gain control (20) implemented preferably in software. The noise components and the voice components are identified by a noise detection routine (300). The |
| 6141390 |
Predistortion in a linear transmitter using orthogonal kernels |
October 31, 2000 |
| A system for linearly transmitting an amplified output signal using predistortion is disclosed. The system uses a straight inverse modeling scheme with orthogonal predictor variables to more easily and accurately determine the inverse of the distortion caused by a power amplifier of a |
| 6112055 |
Method and apparatus for conserving power in a pager |
August 29, 2000 |
| A paging protocol includes header synchronization and system information segments containing information that allows a pager to conserve power. These segments can indicate a schedule of transmissions, and the channels of other transmissions. The pager can use this information to reduce t |
| 6097933 |
Method and apparatus for conserving power in a pager |
August 1, 2000 |
| A paging protocol includes header synchronization and system information segments containing information that allows a pager to conserve power. These segments can indicate a schedule of transmissions, and the channels of other transmissions. The pager can use this information to reduce t |
| 6088407 |
Digital diversity receiver system |
July 11, 2000 |
| A two-way paging system includes one or more transmitters, a plurality of receivers, and at least one two-way personal paging unit or pager. The two-way pager receives pages from the transmitter, and sends response signals which are detected by the receivers. The response signals are in |
| 6088336 |
Computer network and methods for multicast communication |
July 11, 2000 |
| A method of preparing a group distribution graph for multicast transmission of a packet to a group of nodes in a computer network is disclosed. The method includes first preparing a spanning tree that includes every node in the computer network.A group distribution graph patterned after |
| 6087983 |
System for broadcasting GPS data to a pager |
July 11, 2000 |
| A communications network for GPS systems is configured so that the service area (i.e., the geographical area to which GPS service is provided) is divided into relatively small sections. Each section has a unique code assigned to it. The satellites of the GPS system transmit the GPS "base |
| 6049577 |
Header synchronization detector |
April 11, 2000 |
| A pattern detector adapted for wireless communication systems includes an error calculator, a comb filter, an averager, and a threshold detector. The pattern to be detected is a sequence of pilot signal patterns whose error calculation is relatively invariant with respect to frequency of |
| 6032258 |
Apparatus and methods for transmission security in a computer network |
February 29, 2000 |
| A method for validating a message packet communicated from a source node to a destination node in a computer network is disclosed. The source node and destination node have access to a clock mechanism synchronized with a common time frame. The method comprises generating a first security |
| 5995850 |
Method and apparatus for on-the-fly mode change in a paging transmitter |
November 30, 1999 |
| A method and apparatus for on-the-fly mode change in a paging system (201) is provided. A transmitter controller (301) in a base station (207) receives paging information. From the paging information, the transmitter controller (301) is capable of identifying a plurality of paging protoc |
| 5959500 |
Model-based adaptive feedforward amplifier linearizer |
September 28, 1999 |
| A linear RF transmitter uses an adaptive forward model of the power amplifier in a feedforward linearization system. The forward model outputs a modeled power amplifier output signal, which is then used to calculate the error signal. The error signal represents the distortion caused by t |
| 5930296 |
Low-complexity bidirectional equalizer |
July 27, 1999 |
| Disclosed are bidirectional equalizer arrangements in which the outputs of the forward and reverse equalizers are combined using low complexity processing to yield a single output sequence. In each disclosed arrangement of the invention, the low complexity processing utilizes the equ |
| 5923712 |
Method and apparatus for linear transmission by direct inverse modeling |
July 13, 1999 |
| A system for linearly transmitting an amplified output signal using predistortion whereby a straight inverse modeling scheme is used to more easily and accurately determine the inverse of the distortion caused by a power amplifier of a RF transmitter. The "inverse" of the power amplifier |
| 5920808 |
Method and apparatus for reducing key-up distortion by pre-heating transistors |
July 6, 1999 |
| A biasing circuit for a power amplifier, for use in a transmitter, that substantially reduces distortion during key-up and thereby reduces key-up time. The power amplifier includes an output transistor and a bias circuit. The bias circuit is applied to all the class AB stages of the |
| 5914959 |
Digital communications system having an automatically selectable transmission rate |
June 22, 1999 |
| A system and method for maintaining communication between a paging base station (transceiver) and a mobile paging unit when signal reception is below a level that would otherwise be unacceptable. The system changes from one data transmission rate to another depending upon the quality of |
| 5913921 |
System for communicating information about nodes configuration by generating advertisements havi |
June 22, 1999 |
| An improved computer network and methods for determining current configurations of abstract nodes is accomplished by using era values in the configurations of the abstract nodes. Abstract nodes which represent network components within the network have access to databases containing |
| 5913172 |
Method and apparatus for reducing phase cancellation in a simulcast paging system |
June 15, 1999 |
| A transmitter includes a modulator, a power amplifier and a controller to reduce the effects of phase cancellation in a simulcast paging system. The modulator is digitally configurable to modulate according to at least two protocols. The controller configures the modulator for a first pr |
| 5909129 |
Low cost microstrip phase detector |
June 1, 1999 |
| A low-cost microstrip phase detector that is photo-etched onto a circuit board is disclosed. The phase detector is used to detect the phase difference between two high-power radio frequency (RF) signals. One RF signal enters a delay line causing the signal to experience a 180.degree. |
| 5905416 |
Die-cast duplexer |
May 18, 1999 |
| A duplexer, usable to interlink a receiver unit, transmitter unit, and an antenna unit of a communication system, has a body that includes cavities and interconnecting apertures. The duplexer further includes resonator covers that cover the cavities and apertures from a bottom side of th |
| 5881375 |
Paging transmitter having broadband exciter using an intermediate frequency above the transmit f |
March 9, 1999 |
| The present invention teaches a paging transmitter that has an exciter that upconverts a modulated signal to an intermediate frequency (IF) above that of the transmit frequency. By so doing, the paging transmitter can broadcast a large range of transmit frequencies. Additionally, filteri |
| 5867065 |
Frequency selective predistortion in a linear transmitter |
February 2, 1999 |
| A system for linearly transmitting an amplified output signal using predistortion is disclosed. The system uses a straight inverse modeling scheme to more easily and accurately determine the inverse of the distortion caused by a power amplifier of a RF transmitter. The direct inverse |
| 5815532 |
Method and apparatus for peak-to-average ratio control in an amplitude modulation paging transmi |
September 29, 1998 |
| A method and apparatus for reducing peak-to-average power ratio in a paging transmitter broadcasting an independent sideband amplitude modulation protocol is disclosed. A digital signal, for example a digital voice signal, is provided to a control gain generator which generates a digital |
| 5809090 |
Digital diversity receiver system |
September 15, 1998 |
| A two-way paging system includes one or more transmitters, a plurality of receivers, and at least one two-way personal paging unit or pager. The two-way pager receives pages from the transmitter, and sends response signals which are detected by the receivers. The response signals are in |
| 5805077 |
Two-way paging system having reverse channel message frequency authentication |
September 8, 1998 |
| A method of modifying reverse channel messages in a two-way paging system (101) to authenticate reverse channel messages is disclosed. The intended frequency of the reverse channel message is converted into a unique binary integer. The binary integer is used to modify a checksum (207) in |
| 5787133 |
Signal modulation employing a pseudo-random sequence of pilot symbols |
July 28, 1998 |
| A modulator that modulates and encodes data using data symbols, interspersed with pilot symbols, for transmission to another modem, and a demodulator that decodes data symbols of a signal received from another modem. In the demodulator, a received signal is sampled at four times the |
