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| Number | Title | Issue Date |
| 7042902 | Techniques for communicating information using prime-frequency waveform mapping Systems and methods for efficiently conveying one or more broadband communication channels over a transmission medium. Communication is effected by transforming an incoming digital bit stream into a prime frequency information stream that includes a plurality of pri... | 05/09/2006 |
| 6898207 | Techniques for communicating information using Hermite-Gaussian basis functions Systems and methods for efficiently conveying one or more communication channels over a transmission medium. Communication is effected by transforming an incoming digital bit stream into a Hermite-Gaussian information stream that includes a plurality of Hermite-Gaus... | 05/24/2005 |
| 6827779 | Selective mass transfer hoist A mass transfer system offers the simultaneous transfer and time-saving efficiencies transfer techniques, while also offering the flexibility of prior-art free techniques. A mass transfer mechanism and an associated software control mechanism are equipped with the a... | 12/07/2004 |
| 5963562 | Parameter estimation techniques applicable to multiple-signal communications media Systems and methods for determining the spectral arrangement of a composite signal that includes a plurality of individual signals, so that one or more individual signals may be separated from the composite signal. According to one embodiment, a first set... | 10/05/1999 |
| 5917387 | Filter having tunable center frequency and/or tunable bandwidth In an RF filter having an input terminal, an output terminal, a plurality of resonator elements, and a plurality of coupling reactances for coupling one resonator element to another resonator element, for coupling the input terminal to a resonator element... | 06/29/1999 |
| 5903220 | Electrostatic discharge event detector Detection of the existence, magnitude, and frequency of occurrence of a plurality of ESD events is achieved by using an envelope detector to process signals generated by ESD events and received by an antenna. The ESD event detector includes an antenna for... | 05/11/1999 |
| 5884174 | Call admission control for wireless networks Improved wireless telephone call admission methods for admitting new and/or handoff calls into a wireless telephone network having a plurality of communications channels. One such method, fractional guard channel call admission, effectively reserves a non... | 03/16/1999 |
| 5864538 | First-order rate-based flow control with adaptive queue threshold for ATM networks Novel rate-based flow control methods operate in conjunction with a data communications network. Such networks include a plurality of interconnected nodes, wherein each node is adapted for connection to any of a plurality of sources. The sources send data... | 01/26/1999 |
| 5838180 | Low-voltage frequency synthesizer An improved control voltage generator for use with a voltage-controlled oscillator (VCO), so as to enable VCO operation at low supply voltages of less than three volts. The control voltage generator includes a phase comparator, a charge pump, a switched v... | 11/17/1998 |
| 5821758 | Techniques for non-invasive RF circuit testing and RF signal flow redirection Methods and systems for non-invasive RF circuit testing, and/or for RF signal redirection, are disclosed. These methods and systems are used in conjunction with an RF circuit having a first circuit element, a second circuit element, a microstrip line coup... | 10/13/1998 |
| 5809400 | Intermodulation performance enhancement by dynamically controlling RF amplifier current Improved radio receiver designs are disclosed that can be used in the operational environment of wireless communications. The radio receiver includes a signal input terminal, a variable-current RF signal amplifier, a demodulator, and a controller. The var... | 09/15/1998 |
| 5754695 | Degraded gray-scale document recognition using pseudo two-dimensional hidden Markov models and N-best hypotheses The present invention provides a method for recognizing connected and degraded text embedded in a gray-scale image. In accordance with the invention, pseudo two-dimensional hidden Markov models (PHMMs) are used to represent characters. Observation vectors... | 05/19/1998 |
| 5745616 | Waveguide grating router and method of making same having relatively small dimensions A compact waveguide grating router is constructed by forming at least first and second free space regions, first and second sets of optical ports, and a grating array, onto a substrate. The grating array is coupled to the first free space region and the s... | 04/28/1998 |
| 5724417 | Call forwarding techniques using smart cards Automatic call forwarding techniques for use in conjunction with a telephonic communications system such as a PBX or a central switching office. A telephonic device is associated with a smart card reader/writer and a communications unit RF transceiver. Su... | 03/03/1998 |
| 5721843 | Optimizing network utilization by using image reconstruction techniques In a communications network techniques are disclosed for optimizing node interconnection based upon the number of communications pathways to be provided by each of the nodes. For each node, the number of communications pathways to be provided by that node... | 02/24/1998 |
| 5719437 | Smart cards having thin die Thin semiconductor die, approximately 0.004 to 0.007 inches thick, are positioned substantially on the neutral plane of a smart card, the neutral plane defined as the plane of substantially no mechanical strain during flexure of the smart card, thereby pr... | 02/17/1998 |
| 5704003 | RCELP coder An improved method of speech coding for use in conjunction with speech coding methods wherein speech is digitized into a plurality of temporally defined frames, each frame including a plurality of sub-frames, and the digitized speech is partitioned into p... | 12/30/1997 |
| 5699478 | Frame erasure compensation technique In a speech coding system which encodes speech parameters into a plurality of frames, each frame having a predetermined number of bits, a predefined number of bits per frame are employed to transmit a speech parameter delta. The speech parameter delta spe... | 12/16/1997 |
| 5689817 | RF duplexer bypassing techniques for transceivers Improved RF switching techniques operate in conjunction with an existing cellular telephone having an RF amplifier, an antenna, receiver circuitry, a duplexer, and a battery. The duplexer has a first port adapted for connection to the receiver circuitry, ... | 11/18/1997 |
| 5689441 | Signal processing techniques based upon optical devices A signal processing system processes an input signal in real time. The system includes a light valve array for selectively attenuating light incident thereupon in response to electronic control signals, a light source for providing illumination, a light-s... | 11/18/1997 |
| 5687095 | Video transmission rate matching for multimedia communication systems Digital video transmission rate matching techniques are disclosed. A bit stream rate matching apparatus includes a bit rate increasing device and a bit rate reducing device. The bit rate increasing device converts a video bit stream having a first transmi... | 11/11/1997 |
| 5673210 | Signal restoration using left-sided and right-sided autoregressive parameters Signal reconstruction methods reconstruct a missing portion of a signal from a first known portion of the signal preceding the missing portion, and a second known portion of the signal succeeding the missing portion. The first known portion of the signal ... | 09/30/1997 |
| 5673080 | Seamless multimedia conferencing system using enhanced endpoint devices Methods of establishing multimedia conferences between a multimedia server and a plurality of endpoint devices. One or more of these endpoint devices are enhanced in that they include a memory adapted to store one or more telephone numbers, each telephone... | 09/30/1997 |
| 5649118 | Smart card with multiple charge accounts and product item tables designating the account to debit Systems and methods are disclosed wherein a single set of consumer items may be purchased by debiting any of a plurality of accounts stored on a smart card. According to an embodiment disclosed herein, a point-of-sale terminal includes a terminal processo... | 07/15/1997 |
| 5629736 | Coded domain picture composition for multimedia communications systems Video composition techniques are disclosed for processing video information from a plurality of sources to provide a video image having a plurality of rectangular regions. Each rectangular region displays video information from a specific one of the plura... | 05/13/1997 |
| 5625407 | Seamless multimedia conferencing system using an enhanced multipoint control unit and enhanced endpoint devices Techniques are disclosed for controlling the communication of multimedia electronic signals representing audio, video, and/or data. These techniques operate in conjunction with a system including a network, a multimedia server (MMS) connected to the netwo... | 04/29/1997 |
| 5623312 | Compressed-domain bit rate reduction system Improved bit rate reduction techniques are disclosed. When incorporated into an existing video processing system having a DCT coefficients processor, the motion vector processor disclosed herein provides enhanced computational and memory storage efficienc... | 04/22/1997 |
| 5555017 | Seamless multimedia conferencing system using an enhanced multipoint control unit Techniques are disclosed for controlling the communication of multimedia electronic signals representing audio, video, and/or data. These techniques operate in conjunction with a system including a network and a plurality of endpoint devices connected to ... | 09/10/1996 |
| 5553071 | Communication system topology providing dynamic allocation of B-channels Communications systems and methods are directed to a novel communications platform which employs a TDM bus, a TDM bus controller, a passive Ethernet bus, and a centralized Ethernet hub to provide for the communication of data, voice, and/or video signals ... | 09/03/1996 |
| 5550908 | Modem communications interoperability with services equipped to provide calling party identity delivery with call waiting Techniques are disclosed for providing interoperability between a first modem and a calling identity delivery on call waiting (CIDCW) service. According to an embodiment disclosed herein, a first modem is coupled to an alerting signal receiver and a commu... | 08/27/1996 |
| 5528630 | Coupler for communication systems which utilize more than one frequency band A signal coupler includes a transformer having a primary and a secondary winding. Each transformer winding has a pair of associated winding terminals and is also split at an intermediate winding position to form a pair of supplemental winding terminals. C... | 06/18/1996 |
| 5480842 | Method for fabricating thin, strong, and flexible die for smart cards Improved methods for fabricating smart cards are disclosed. Semiconductor die approximately 0.004 to 0.007 inches thick are fabricated using chemical stress relief processes and UV dicing tape. The die are positioned substantially on the neutral axis of a... | 01/02/1996 |
| 5473671 | Selective screening of incoming calls for cellular telephone systems In connection with cellular telephones, the divergent call treatment technique of the present invention is used to particular advantage. A list of accepted callers is maintained by a service supplier. When a call comes in, a determination is made as to wh... | 12/05/1995 |
| 5461217 | Secure money transfer techniques using smart cards Systems and methods for providing secure electronic financial transactions are disclosed. Money is electronically stored on a plurality of smart cards. At least one smart card is equipped with an electronic security wall having a closed state and an open ... | 10/24/1995 |
| 5459304 | Smart card techniques for motor vehicle record administration Smart card techniques are disclosed for integrating and administering records related to the ownership and/or operation of motor vehicles. A smart identification card stores and administers a plurality of motor vehicle records corresponding to a single mo... | 10/17/1995 |
| 5450615 | Prediction of indoor electromagnetic wave propagation for wireless indoor systems Techniques are disclosed for predicting RF propagation within a structure such as a building. A reference transmitter location and a plurality of reference receiver locations are selected. For each reference receiver location, RF propagation pathways are ... | 09/12/1995 |
