Patents Represented by Attorney, Agent or Law Firm Daniel R. Collopy
  • Patent number: 5311554
    Abstract: A selective call receiver (106) receives a radio frequency signal having digital signals contained within symbols. The signal demodulated by the receiver (804) comprises a substantially constant DC offset voltage and an AC voltage (1810) indicative of the information contained within the symbols. A threshold level extraction circuit (808) which extracts the offset voltage is synchronously controlled (1840) providing for sampling of the received signal by the threshold level extraction circuit in substantially the center of each symbol.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: May 10, 1994
    Assignee: Motorola, Inc.
    Inventors: Daniel A. Morera, David R. Petreye
  • Patent number: 5309154
    Abstract: A selective call receiver (30) for receiving selective call signals in a universal synchronization code operating mode receives signals having the conventional POCSAG sync code and signals having dual sync codes and decodes the signals appropriately to recover personal and information services messages. Whether the receiver (30) is operating in a conventional POCSAG system or a dual sync code system, the receiver (30) conserves battery power by activating the high battery draining receiver circuit (34) only during frames (106) of the signal (100) wherein personal message addresses or database information is likely to appear. The frames (106) where the personal message addresses are likely to appear and where the database information appear are indicated by a frame byte stored in a memory (48) with the corresponding address.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: May 3, 1994
    Assignee: Motorola, Inc.
    Inventors: Kyung T. Mun, Charles J. Ganucheau, Jr., Leonard E. Nelson
  • Patent number: 5303227
    Abstract: A method for full duplex data transference between a master device and a slave device comprises the steps of the slave device providing (725) data stored in a location within the slave device to the master device and the master device providing (760) modified data to be stored in the location to the slave device. A further step includes the slave device, substantially coincident with the master device providing (760) the modified data to the slave device, providing (755) data stored in a subsequent location within the slave device to the master device.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: April 12, 1994
    Assignee: Motorola, Inc.
    Inventors: Barry W. Herold, Joan S. DeLuca
  • Patent number: 5303416
    Abstract: A radio communication device (100) for receiving a signal comprises tracking circuitry (115) for tracking the signal to acquire peak and valley values of the signal, a threshold detector (150) coupled to the tracking circuitry (115) for determining a center threshold of the signal, and an edge detector (180) coupled to the threshold detector (150) and the tracking circuitry (115) for determining a number of center transitions of the signal in a predetermined time period. The radio communication device (100) further comprises a rate controller (185) coupled to the edge detector (180) and the tracking circuitry (115) for receiving the number of center transitions and for adjusting an acquisition rate with which the peak and valley values are acquired in accordance with the number of center transitions.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: April 12, 1994
    Assignee: Motorola, Inc.
    Inventor: Daniel A. Morera
  • Patent number: 5303421
    Abstract: A selective call receiver (100) including a receiver (102) for receiving messages and a housing (104) for housing the receiver (102). A clasp (200) for securing first and second wrist straps (112, 114) including a base member (202) and a pair of sides (204, 206) contiguous with the base member (202). A first compression member (208) located between the pair of sides (204, 206), the base member (202) and the first compression member (208) for engaging the first wrist strap (112) slidably therebetween. The first wrist strap (112) is also coupled to the housing (104). A clasp cover (214) having a second compression member (210) coupled thereto and to a first (204) of the pair of sides. The second compression member (210) engages the second wrist strap (114) with the first compression member (208) when the clasp cover (212) is transversely rotated between the pair of sides (204, 206) while the second wrist strap (114) also coupled to the housing (104).
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: April 12, 1994
    Assignee: Motorola, Inc.
    Inventor: Michael P. Goldenberg
  • Patent number: 5303402
    Abstract: A radio receiver has a receiver section (103) that receives an information signal and an integrated circuit (105) in which a default operating condition of an electronic device is selectively programmed. A mask option programming link in the integrated circuit (105) is programmed while maintaining electrical isolation of a programming bias from the electronic device (207). The mask option programming link has a first conductor (211) in a first layer with first (212) and second (213) programming contact terminals. A second conductor (210) that determines a default operating condition of the electronic device (207), resides in a second layer that is electrically isolated from the first layer. When sufficient programming bias is applied to the programming terminals of the first conductor (211), energy dissipated by the first conductor eliminates coupling of the second conductor (210) to the electronic device (207), changing its default operating condition.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: April 12, 1994
    Assignee: Motorola, Inc.
    Inventors: Kevin McLaughlin, Barry Herold
  • Patent number: 5301354
    Abstract: A satellite based paging communication system comprises a plurality of terrestrial stations capable of communicating the paging information with at least one satellite. The satellite(s), in turn, are capable of communicating the paging information to at least one terrestrial receiver or terrestrial station. Also included is at least one control station for determining where and how to deliver the paging information to one or more of a plurality of terrestrial receivers (pagers), at least some of which are capable of receiving the paging information from one or more of the satellites and one or more of the terrestrial stations.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: April 5, 1994
    Assignee: Motorola, Inc.
    Inventors: Robert J. Schwendeman, William J. Kuznicki
  • Patent number: 5300938
    Abstract: An antenna system for a communication receiver (100) which has an internal antenna (200) and which is coupled to a portable computer (104) to deliver received data messages thereto comprises a resonant loop antenna (16) magnetically coupled to the internal antenna (200) of the communication receiver (100), and a resonant wireframe shield (18, 40) which is coupled to the resonant loop antenna (16) and oriented perpendicular thereto. The resonant wireframe shield (18, 40) shields the communication receiver (100) from an electrical interference signal generated by the portable computer (104).
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: April 5, 1994
    Assignee: Motorola, Inc.
    Inventors: Tony Y. Maroun, William R. Van Dyke, Jr., Gregory W. Fuller
  • Patent number: 5300937
    Abstract: An antenna system maximizes a gain associated an antenna loop by expanding a free end away from a fixed end of the loop in response to first and second portions of the antenna loop resiliently engaging first and second interior sides of a housing to maintain the position of the antenna loop and increase the effective area of the antenna loop.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: April 5, 1994
    Assignee: Motorola, Inc.
    Inventors: John K. Capp, Keith W. Neutzman, John J. Parkes, Jr.
  • Patent number: 5293161
    Abstract: A selective call receiver (100) comprises a receiver (104) for receiving a message and a vibrator (116) capable of vibrating at a selected one of at least two selectable frequencies for alerting a user of a received message. The vibrator (116) also has a selector (120) or a tuning element (130) for varying the frequency of the vibrator (116).
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: March 8, 1994
    Assignee: Motorola, Inc.
    Inventors: John F. MacDonald, Jeffrey S. King
  • Patent number: 5289141
    Abstract: A method and apparatus for generating an output signal (616) having a pre-determined frequency shift relative to the frequency of a reference signal from a reference frequency generator (202) comprise a digital phase-locked loop (206) coupled to the reference signal for generating the output signal (616). The method and apparatus further comprise adding pulses to the reference signal in a pulse addition circuit (304), the pulses recurring at a first cyclical rate determined by a microprocessor (702). The method and apparatus further comprise concurrently subtracting pulses from the reference signal in a pulse subtraction circuit (302) at a second cyclical rate.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 22, 1994
    Assignee: Motorola, Inc.
    Inventors: Peter Nanni, Bradley M. Hiben, Leslie D. Mutz
  • Patent number: 5289178
    Abstract: This invention provides an indication of quality of signal reception in a selection call system such as a paging system, by comparing received data with preprogrammed data and indicating the degree of discrepancy therebetween.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: February 22, 1994
    Assignee: Motorola, Inc.
    Inventor: Robert J. Schwendeman
  • Patent number: 5288986
    Abstract: An optically readable matrix (100) has four intersecting sides of approximately equal length defining a perimeter and includes a binary code formed from light and dark squares of substantially equal sizes located within the perimeter. The matrix (100) comprises first and second orientation squares (105, 110) included in the light and dark squares and located in opposite corners of the matrix (100). Each of the orientation squares (105, 110) preferably includes a contrasting circular area (115, 120) located in a predetermined position within the orientation square (105, 110) and having a predetermined size relationship with the orientation square (105, 110). Such a matrix (100) may be formed on a printed circuit board (505) for use in an electronic device (500) to convey information about the printed circuit board (505). An apparatus (600) for decoding the matrix (100) includes an optical scanner (610) for scanning the matrix (100) and for locating the orientation squares (105, 110).
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: February 22, 1994
    Assignee: Motorola, Inc.
    Inventors: Jerrold S. Pine, Gary K. Blitman, Brian L. Grinage, German Gonzalez
  • Patent number: 5287550
    Abstract: A selective call terminal receives selective call information from a message originator. A transmission time is scheduled for the selective call message by a selective call system controller. A plurality of simulcast schedulers coupled to the controller receive and store the selective call message and the transmission time. The simulcast schedulers have an equalization time stored therein, the equalization times for each of the simulcast schedulers calculated by the system controller using simulcast receivers for measuring signal time differences between transmitters. The simulcast schedulers provide the selective call message to corresponding transmitters at a time to transmit the selective call message, the time determined by the transmission time and the equalization time. Transmitter settings and code types defining signalling protocol, data bit rate, carrier frequency and transmitter power, for each message are varied in accordance with information received from the system controller.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: February 15, 1994
    Assignee: Motorola, Inc.
    Inventors: Robert D. Fennell, David R. Petreye
  • Patent number: D344946
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Motorola, Inc.
    Inventor: William J. Scheid
  • Patent number: D344947
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: March 8, 1994
    Assignee: Motorola, Inc.
    Inventors: William J. Scheid, Jeffrey S. King, Steven F. Fradella
  • Patent number: D344948
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: March 8, 1994
    Assignee: Motorola, Inc.
    Inventors: William J. Scheid, Dwight D. Brooks
  • Patent number: D344954
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: March 8, 1994
    Assignee: Motorola, Inc.
    Inventors: William J. Scheid, John K. Capp
  • Patent number: D345053
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: March 15, 1994
    Assignee: Motorola, Inc.
    Inventors: Fernando Gomez, Jeffrey King
  • Patent number: D345739
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: April 5, 1994
    Assignee: Motorola, Inc.
    Inventors: Anthony M. Potts, Scott J. Hanlon