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| Number | Title | Issue Date |
| 5825865 | Temporary message routing and destination selection A profile is maintained, either in a central profile data base (106) or in a more distributed manner that includes local profile data bases (706). These profile data bases include preference information for particular users, which preference information i... | 10/20/1998 |
| 5524290 | Adaptive graphic equalizer and radio using same An adaptive graphic equalizer (200, 400) has various ordinarily fixed parameters (such as center frequencies, filter bandwidths, and step response sensitivity) that are automatically altered to suit a particular audio source. In one embodiment, a radio (1... | 06/04/1996 |
| 5483671 | Method of determining transmission time to transmit an information packet to a remote buffer A method at comparator (103) of determining the depth of remote buffer (107-109), by computing the difference between the current time and a next launch time, where the next launch time is the time at which a next information packet will be transmitted by... | 01/09/1996 |
| 5467721 | Vertically movable table A table surface (11) adjusts in set increments to a variety of vertical positions. The table surface (11) moves only in a vertical direction, as determined through use of a vertical guide (16) that traverses a vertical tract (15). A tooth (35) and pawl (4... | 11/21/1995 |
| 5457735 | Method and apparatus for queuing radio telephone service requests At the access control gateway (105) of a communications system (100) sharing common resources and providing telephone and dispatch services, a service request queue (301) is provided where requests are queued when communication resources are not available... | 10/10/1995 |
| 5422610 | Multi-filter device and method of making same A multi-filter device comprising a ceramic block (10) having at least two filters A and B. Both filters A and B include a notch (11 and 13, respectively) formed on one side of the ceramic block (10), such that these notches are flanked by ceramic block ma... | 06/06/1995 |
| 5421082 | Method of forming a decal having conductive paths thereon A decal (51) having a conductive pattern is first fabricated. This fabrication includes plating a layer of a conductive material (22) using a thermal spraying method. After completing the fabrication of the decal (51) having the conductive pattern, the de... | 06/06/1995 |
| 5423055 | Trunked communication system with automatic repeater talk-around A method to implement multiple talk-around communication links using the communication resources of one repeater. A system resource controller determines whether talk-around is possible for any two communication units intending to engage in a point-to-poi... | 06/06/1995 |
| 5377229 | Multi-modulation scheme compatible radio A transceiver compatible with both wide channel constant envelope 4 level FSK FM modulation and narrow channel π/4 differential QPSK linear modulation allows compatible interaction between modified constant envelope and non-constant envelope transmitters... | 12/27/1994 |
| 5347548 | Circuit for simultaneous recovery of bit clock and frame synchronization Simultaneously detecting both frame and bit synchronization in a serial bit stream reduces the time required to have a receiver lock up to a transmitted serial data signal. A dual-phase correlator circuit is used to detect frame synchronization while a mu... | 09/13/1994 |
| 5341498 | Database management system having first and second databases for automatically modifying storage structure of second database when storage structure of first database is modified An operator MUX interface (OMI) (102) includes a data base manager (203) that manages at least two data bases. The first comprises a substantially non-temporary data base, and the second comprises a substantially temporary data base. The latter includes i... | 08/23/1994 |
| 5327573 | Method for supporting voice communications between communication systems An intersystem communication path (20, 67) can be established on an as needed basis. Already established paths are fully utilized before new paths are established. Already established paths can be automatically disconnected when no longer needed, or when ... | 07/05/1994 |
| 5295140 | Method for multi-purpose utilization of resources in a communication system A communication resource is subdivided as a function of time into a plurality of time slots (210), which may then be further subdivided on a non-periodic basis into a number of sub-slots (220). In a slot or sub-slot, communication units (101) may utilize ... | 03/15/1994 |
| 5291488 | Communication system configuration data management System configuration data required for use by various interfaces (102) can be obtained either directly via a data link (104) that couples the interfaces to other systems (109 or 111), or by a down link from a system data manager (106) configured as part o... | 03/01/1994 |
| 5289504 | Signal decoding method using both signal and channel state information Multilevel angle modulated information is decoded through integral use of channel state information. In a Viterbi Algorithm Trellis Code Modulation decoder (213), channel state information indicating temporal reliability of received symbols is utilized, a... | 02/22/1994 |
| 5278833 | Method for providing reserved communication access using multiple random access resources A communication resource is subdivided as a function of time into a plurality of time slots (210). These time slots are further subdivided on a non-periodic basis into a least two random access sub-slots (220), during which communication units (101) may r... | 01/11/1994 |
| 5261117 | Method to allow a radio transceiver to automatically select from amongst multiple radio systems A method and means of automatically accessing several types of radio systems is described. The present invention allows a subscriber unit, which is normally operative in a operator selected radio system, to establish communication with an alternate system... | 11/09/1993 |
| 5257402 | Method for effecting handoff in a multi-site communication system A method of effecting handoff of a communicating communication unit from a first communication resource to a second communication resource. After determining that a handoff from the first communication resource to the second communication resource should ... | 10/26/1993 |
| 5239466 | System for selectively routing and merging independent annotations to a document at remote locations A personal communicating computer (112) (FIG. 1) remains in contact, via a wireless network, with an office server (101). Documents from various sources can be transmitted to the personal communicating computer (112) using this network. Upon receipt, such... | 08/24/1993 |
| 5220583 | Digital FM demodulator with a reduced sampling rate A method of recovering a frequency modulated signal wherein the frequency modulated information signal is sampled at a rate less than the Nyquist sampling rate, following which the under sampled signal can be demodulated to extract the original informatio... | 06/15/1993 |
| 5220565 | Selective transmission of encoded voice information representing silence Discrete packets (306) containing encoded voice information are transmitted within frames (301 and 302) in a repetitive manner until all voice information has been sent. Following transmission of all packets containing such voice information, at least a p... | 06/15/1993 |
| 5208851 | Method for controlling allocation of a communication link A plurality of consoles (111-113) share use of a single landline (101) with minimal requirements for internal maintenance data signalling. As two or more consoles both share use of the link, a telephone interface (103) assigns one of the consoles to be re... | 05/04/1993 |
| 5201067 | Personal communications device having remote control capability A personal communications device (100) includes a wireless transceiver (206, 207, 208) to allow a two-way exchange of user information, and to allow down loading of remote control signalling information. The latter can be transmitted via an appropriate tr... | 04/06/1993 |
| 5142533 | Method for controlling the scheduling of multiple access to communication resources A method of providing a communication unit (10) access to a shared communication resource. In the communication unit, a clock (123) is maintained, and the unit detects the time when an inhibit period on the shared communication resource begins, and the ti... | 08/25/1992 |
| 5121412 | All-digital quadrature modulator A CPFSK quadrature modulator (300) is disclosed utilizing an all-digital implementation. The serial data input signal (20 ) is formatted into parallel overlapping bits using a shift register (202), an up/down counter (206), and an interpolation counter (2... | 06/09/1992 |
| 5109531 | Sideband receiver with pilot lock A sideband receiver that locks to a pilot component of a received signal. The pilot component is down-converted and then up-converted prior to phase comparing the pilot component information to provide a lock function. The receiver architecture allows mon... | 04/28/1992 |
| 5095529 | Intersystem group call communication system and method Communication systems having dedicated communication resources are provided with receivers that monitor the communication resources of other communication systems, and roamers are preregistered in non-home systems. Using this infrastructure, a group call ... | 03/10/1992 |
| 5081707 | Knowledge based radio A knowledge based radio that monitors changed operating parameters and environmental conditions, and that selectively varies operating parameters of the radio in response to rules. The rules can be varied over time by the radio based upon the monitored re... | 01/14/1992 |
| 5079476 | Encapsulated field emission device A solid state field emission device having a cathode that is peripherally disposed about the anode and axially displaced with respect thereto. The device itself is encapsulated, readily manufacturable, and has comparable operating properties, vis-a-vis on... | 01/07/1992 |
| 5072395 | Navigation system with easily learned destination selection interface A navigation system having a destination selection input mechanism that can be readily and rapidly used by an inexperienced user. The display (103) and user input (102) are physically configured and controllably intercoupled to support the conveyance of a... | 12/10/1991 |
| 5066923 | Linear transmitter training method and apparatus A linear transmitter having both an open loop and a closed loop training mode capability functions to schedule and facilitate these training modes in a manner that reduces adjacent channel splatter. A training waveform can be utilized to enhance these ope... | 11/19/1991 |
| 5060110 | High frequency MOSCAP A MOSCAP that includes a semiconductor layer (103) having gold impurities sufficient to increase the density of deep recombination traps in the semiconductor bandgap. During operation of the MOSCAP in high frequency, reverse bias operating conditions, the... | 10/22/1991 |
| 5055077 | Cold cathode field emission device having an electrode in an encapsulating layer A cold cathode field emission device (100) having an encapsulating layer (109) formed through a low angle vapor deposition process. The encapsulation layer (109) includes an electrode (111). Depending upon the embodiment, the electrode can function as an ... | 10/08/1991 |
| 5054068 | Trunked radio communication system having encrypted system control information A trunked communication system having a control resource that encrypts system control messages. In one embodiment, the encryption includes controlling a bit interleaving process (208, 311) as a function of an encryption key (203, 321). In another embodime... | 10/01/1991 |
| 5050237 | Radio receiver having automatic bandwidth control during tuning In this radio receiver, the charge on a capacitor (14) controls the bandwidth of filters in the receiver's audio circuits. When tuning the radio, a bandwidth control circuit (13) forces this capacitor (14) to discharge, thereby forcing the audio path to b... | 09/17/1991 |
| 5046130 | Multiple communication path compatible automatic vehicle location unit A location reporting device for use with both voice and data RF transceivers. The location determining device selects which of the transceivers will be utilized to transmit location information to a central site in response to a number of predetermined cr... | 09/03/1991 |
| 5046128 | Frequency equalized simulcast broadcasting system and method A simulcast system (100) having remote sites (104) that can transmit a carrier signal (107) having a modulation signal imposed thereon, wherein both the carrier and the modulation signal are derived from the same reference. Monitoring stations (108) recei... | 09/03/1991 |
| 5038342 | TDM/FDM communication system supporting both TDM and FDM-only communication units An RF communications system that can determine when a requesting subscriber unit comprises a TDM capable unit, and when it doesn't. Channel assignments are based upon this determination. The system also includes repeaters that can translate communications... | 08/06/1991 |
| 5031232 | Method and apparatus for providing an operating mode alias to a radio A radio programming device (100) that allows for operating mode information (Table 2) as preprogrammed in a radio (101) to be accessed and compared against a mode name alias data base (Table 1). When matches are found, the appropriate mode name alias is p... | 07/09/1991 |
| 5030921 | Cascaded cold cathode field emission devices Field emission devices are cascaded in multiple stages, such that certain structures function as electrodes for field emission devices of differing stages.... | 07/09/1991 |
