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| Number | Title | Issue Date |
| 8081635 | Reconstruction of errored media streams in a communication system A method for reconstructing and reproducing a received media stream while minimizing storage space is presented. The media stream transmitted by a transmitting device is uploaded to an external storage device. Metadata including packetization mapping information, mi... | 12/20/2011 |
| 8077763 | Full-duplex radio frequency echo cancellation A system comprising a transmitter element creating an interrogation signal and transmitting the interrogation signal and a receiver element receiving a reflection signal of the interrogation signal and combining the reflection signal and a feedback signal to cancel ... | 12/13/2011 |
| 8077041 | Real-time automatic RFID inventory control system The present disclosure describes a system for tracking store-items placed in a storage space. The system includes a plurality of wireless RFID readers distributed within the storage space such that at least one store-item, having an RFID tag attached, is within an i... | 12/13/2011 |
| 8063800 | Efficient encoding and decoding of mixed data strings in RFID tags and other media An encoding method comprises generating a character map of an alphanumeric character string, identifying runs of like character type symbols in sequential positions, and removing the runs of character type symbols from the character map. The center for the center in... | 11/22/2011 |
| 8060120 | System and method for transmitting a sequence of pages in a communication system A system and method for transmitting a series of pages in a communication system. The system includes a paging console for placing a plurality of pages in a queue for transmission to one or more targets devices. Each page includes a Dependent-Upon (DU) field that in... | 11/15/2011 |
| 8059619 | Mobile communication system and a mobile station, a base transceiver station and a method for use therein A mobile communication system (100) includes an infrastructure (121) including at least a first base transceiver station (123) and a plurality of mobile stations (101, 103), wherein each of the mobile stations is operable to detect interf... | 11/15/2011 |
| 8045499 | Method of communicating which channel is to be monitored by subscriber units that are idle in a communication system The present invention discloses, in a two-way radio frequency (RF) communications system having at least one repeater, a plurality of channels, and a plurality of subscriber units, a repeater receives a message that identifies a channel that is selected to serve as ... | 10/25/2011 |
| 8041305 | Selectively rendering a communication at a communication device A method to selectively rendering a communication at a receiving communication device comprises receiving a communication and determining whether an association exists between the receiving communication device and a source of the communication. If an association do... | 10/18/2011 |
| 8027696 | Method and apparatus for allocating channel resources in a wireless communication system Disclosed is a method for dynamically allocating channel resources in a wireless communication system. A request for a channel resource by a new talkgroup call is received. Whether the new talkgroup call is associated to an associated communication based upon an ope... | 09/27/2011 |
| 8027683 | Handover between radio networks A communication system comprises a first radio network supporting a first air interface standard and a second radio network supporting a second air interface standard. The second radio network comprises a network interface 401 which receives a handover reques... | 09/27/2011 |
| 8019050 | Method and apparatus for providing feedback of vocal quality to a user Embodiments of the invention relate to a feedback mechanism that informs a user of a communication device to adjust the volume, pitch, tone or other characteristic of his voice so as to compensate for noise in the surrounding environment. The feedback mechanism incl... | 09/13/2011 |
| 8014404 | Method and system for priority based routing A method and system for routing a data packet, intended for a destination node, from a source node to a first intermediate node in a network is useful for improving the efficiency of the network. The method includes determining a priority level for a user of the sou... | 09/06/2011 |
| 8000731 | System and method for managing affiliation requests in a communication system A system and method for managing call affiliation in a communication system having a plurality of communication units. When a public call announcement is initiated, a broadcast data message is transmitted to the communication units identifying a public announcement ... | 08/16/2011 |
| 7986692 | System and method for transmitting call information in a communication system with long link delays A system and method for transmitting call information in a communication system having sites with long link delays. Upon a call being initiated within the communication system, a zone controller determines the participating sites that are to be involved in the call ... | 07/26/2011 |
| 7983681 | System and method for enhancing interoperability between mobile communication system components using different audio encoding formats A system and method for improving the interoperability of communication system components using multiple audio encoding formats within a single talkgroup is provided. The system includes at least two base site repeaters, each of which may be configured to receive an... | 07/19/2011 |
| 7970426 | Method of assigning provisional identification to a subscriber unit and group The present disclosure provides an efficient and effective method for allocating provisional PUIDs and PGIDs to subscriber units and groups during a failure, such that when the communication system recovers, there is a decrease in or elimination of the number of dro... | 06/28/2011 |
| 7969282 | Optimized operation of a dense reader system Methods, systems and apparatuses for RFID readers forming a reader network are described. In an aspect of the present invention, a plurality of RFID readers are configured to interrogate tags. Furthermore, the readers are configured to communicate with one another. ... | 06/28/2011 |
| 7945836 | Method and apparatus for reducing signaling overhead in a communication system using hybrid automatic repeat request A transmitting unit combines a slot identifier (SI) and a block identifier (BI) in each header that is transmitted with the data to allow a receiving unit to associate previously received data blocks with retransmissions, or retries, of the same respective data bloc... | 05/17/2011 |
| 7936313 | Antenna designs for radio frequency identification (RFID) tags Methods, systems, and apparatuses for antenna designs for radio frequency identification (RFID) tags are described. ... | 05/03/2011 |
| 7917131 | System and method for minimizing undesired audio in a communication system utilizing distributed signaling A system and method for processing calls in a communication system utilizing distributed signaling. When a call signal having distributed identification data is received on a communication channel, the call information (such a voice, data, video, etc.) is initially ... | 03/29/2011 |
| 7912498 | Adaptive buffering to reduce audio truncation A method and apparatus are provided for reducing truncation of time sensitive information such as audio in a trunked radio system having a plurality of zone controllers. The method includes the steps of receiving a call request from a calling radio or wireline conso... | 03/22/2011 |
| 7902984 | Single frequency low power RFID device Methods, systems, and apparatuses for a reader transceiver circuit are described. The reader transceiver circuit incorporates a frequency generator, such as a surface acoustic wave (SAW) oscillator. A reader incorporating the reader transceiver circuit is configured... | 03/08/2011 |
| 7884702 | Queued operations in HF/UHF RFID applications A method for pipelined processing of access commands to a population of radio frequency identification (RFID) tags is provided. The method includes transmitting a first queued access command to a first tag in the population of RFID tags, transmitting a second queued... | 02/08/2011 |
| 7876864 | Method and device for enhancing signal detection in a frequency selective fading channel A method and system are provided for enhanced signal detection in a frequency selective fading channel. Improved signal detection is realized by replacing single matched filters with multiple matched filters. The single matched filter spectrum is partitioned by freq... | 01/25/2011 |
| 7876740 | Method and system for synchronization of link layer windows A method and system for synchronization of link layer windows in a wireless communications system is disclosed. At a transmitter in the wireless communications system, the transmitter transmits a plurality of frames in a transmitter's link layer window, wherein each... | 01/25/2011 |
| 7860196 | Method and circuit for estimating in-phase/quadrature signal amplitude imbalance A method and circuit are described for estimating I and Q amplitude imbalance occurring in a signal received by a direct conversion receiver (DCR). The DCR generates a mixing signal having a frequency substantially the same as the carrier signal of the signal receiv... | 12/28/2010 |
| 7844505 | Automated real-time distributed tag reader network A method and system for conducting an inventory of items by a network tag reader, wherein a tag is attached to each item and each tag is permanently assigned a tag identification number (Tag ID). A method according to the present invention includes selecting one of ... | 11/30/2010 |
| 7844000 | Method and apparatus for video encoding A method of enchancing a video bit stream using temporal scalability, wherein the number of bits or a temporal position of a bidirectionally predicted picture in an enhancement layer is determined with reference to a corresponding characteristic of pictures in anoth... | 11/30/2010 |
| 7787877 | Method and apparatus of avoiding audio truncation in trunked systems A method and apparatus are provided for reducing audio truncation during a call in a trunked radio system. The method includes the steps of providing a multicast IP address of a rendezvous point to a first participant of the call to forward multicast audio of the ca... | 08/31/2010 |
| 7787613 | Method and apparatus for double-talk detection in a hands-free communication system An echo canceling circuit comprising a double talk detector, an upper band signal filter configured to pass only near-end upper band signals to the double talk detector and remove lower band signals, an adaptive filter circuit, a control circuit operatively coupled ... | 08/31/2010 |
| 7787568 | High bit rate RFID system Methods, systems, and apparatuses for quadrature amplitude modulation (QAM) based radio frequency identification (RFID) systems are described. In an aspect, a tag transmitter performs QAM signal mapping and quadrature modulation of a carrier wave (CW), to transmit a... | 08/31/2010 |
| 7783289 | Mobile communication system and controller, mobile station and method for use therein A mobile communication system is described. The system has an infrastructure that includes base stations and has mobile stations, a mobile terminal and a mobile controller. Each mobile station is operable to communicate with one of the base stations. The mobile term... | 08/24/2010 |
| 7761085 | Mobile station, system, network processor and method for use in mobile communications A method of operation in a mobile communication system includes a mobile station, a first network capable of serving the mobile station as a home network and a second network capable of serving the mobile station as a visited network, including carrying out in the h... | 07/20/2010 |
| 7756214 | System and method for inserting pilot symbols in continuous phase modulation systems A system and method for creating a number of phase reference points in a data frame is provided. When a sequence of data bits is to be transmitted, the sequence is precoded into data symbols and organized as data frames. For each data frame, an x number of phase ref... | 07/13/2010 |
| 7750691 | Clock driver circuit Clock driver circuit having upper and lower transistors1 and upper and lower transistors2. Voltage node1 coupled to electrodes of upper transistor1 and upper transistor2. Voltage node2 coupled to elec... | 07/06/2010 |
| 7738591 | System and method for setting phase reference points in continuous phase modulation systems by providing pilot symbols at a location other than the location of the phase reference point When a sequence of data bits is to be transmitted, the sequence is precoded into data symbols and organized as data frames. For each data frame, a number of phase reference points at predetermined intervals within the data frame are required to allow a receiving dev... | 06/15/2010 |
| 7706765 | Method and device for enabling and disabling group transmissions A source device (110) receives a carrier signal and continuously monitors the carrier signal for a first predetermined condition and a second predetermined condition. The source device (110) transmits data if the first predetermined condition is satisf... | 04/27/2010 |
| 7698553 | Method for utilizing multiple level encryption In a wireless communication system with an air interface comprised of a plurality of bursts, a communication device (102) receives a burst (200). The burst comprises payload (206, 208), a first indicator (202) and a second indicator (2... | 04/13/2010 |
| 7668148 | Method of carrier type preemption A method and apparatus are provided for allocating radio frequency carriers in a radio service area having a plurality of radio frequency TDMA carriers and FDMA carriers. The method includes the steps of receiving a call, when the received call is a FDMA call and a ... | 02/23/2010 |
| 7663486 | RFID tag user memory indication A system and method in a radio frequency identification (RFID) tag for writing and erasing user memory. A write command is received at the tag to write data into user memory of the tag. Based on receipt of the write command, a user memory flag in a first memory bank... | 02/16/2010 |
