Patents Represented by Attorney, Agent or Law Firm Daniel R. Collopy
  • Patent number: 5206885
    Abstract: A selective call receiver comprises a receiver for receiving a signal and a digital synchronizer coupled to the receiver. The digital synchronizer examines the signal transmitted at a predetermined baud rate for a predetermined time. Upon completion of the predetermined time, a decision is made as to whether or not the signal included the predetermined baud rate. If the signal includes the predetermined baud rate, a bit clock is established indicative of the boundaries and center of each baud symbol. The synchronizer samples the signal at a multiple of the baud rate and accumulates the phase relationship between the samples and transitions of the signal during the predetermined time. Upon conclusion of the predetermined time, the distribution of the phase relationships is examined and the presence or absence of signal is determined. If the presence is determined, the bit clock is established.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: April 27, 1993
    Assignee: Motorola, Inc.
    Inventors: Michael J. DeLuca, Joan S. DeLuca
  • Patent number: 5193216
    Abstract: An out of range detector determines whether a communications device is out of range of its signal if the signal is not detected and a history of received signal strength values consistent with approaching out of range is measured prior to nondetection of the signal.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: March 9, 1993
    Assignee: Motorola, Inc.
    Inventor: Walter L. Davis
  • Patent number: 5185906
    Abstract: A belt clip assembly clamps a device (30) onto thin material. The device has a backcover (31) which includes a first set of ears (32) with a first set of pin holes. The belt clip assembly comprises a belt clip (44), a pin (130), and a spring (100). The belt clip (44) has a second set of ears (24,26) with a second set of pin holes (20,22); the pin (130) passes through the first set of pin holes and the second set of pin holes (20,22) for establishing an axis of rotation (56); and the spring (100) is formed to apply force to maintain the belt clip (44) in a closed position against the back cover (31). The spring (100) has a retaining ring (120) formed integrally therewith. The retaining ring (120) couples to the pin (130) for retaining the pin (130) within the first and second set of pin holes (20,22).
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: February 16, 1993
    Assignee: Motorola, Inc.
    Inventor: Dwight D. Brooks
  • Patent number: 5175459
    Abstract: An electronic device, such as a selective call receiver, includes a housing (302) for the electronic device preferably having a rigid member (304) fixedly integrally attached thereto and extending therefrom, the rigid member constructed to cooperatively connect with a rotatable body (308) and to secure the rotatable body (308) to the housing (302) while allowing the rotatable body (308) to rotate about the rigid member (304), a circuit supporting substrate (301) arranged within the housing (302) coupled thereto, and an alerting device (300) for providing a vibratory alert. The alerting device (300) includes coils (320) on the circuit supporting substrate (301) arranged about the rigid member (304), with each coil (322) capable of being selectively energized.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: December 29, 1992
    Assignee: Motorola, Inc.
    Inventors: Alfred N. Danial, Richard A. Ashley, Joseph C. Benedetto
  • Patent number: 5173688
    Abstract: A selective call receiver, such as a pager, stores an incoming message without interrupting the operation of the receiver. One set of data items displayed on a display of the receiver is updated independent of another set of data items. The updating function allows for the display of display formats such as forms and tables, wherein only the information needed to fill in the table is transmitted, the header information being retained from one update to the next.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: December 22, 1992
    Assignee: Motorola, Inc.
    Inventors: Joan S. DeLuca, Amy R. Kabcenell, John Schwendeman
  • Patent number: 5168493
    Abstract: A signalling protocol comprising a plurality of interleaved phases is transmitted at various baud rates, the various baud rates being multiples of a base baud rate. The signalling protocol allows a selective call receiver to decode at an operating baud rate equivalent to the base baud rate irrespective of the transmission baud rate by decoding only a portion of the transmitted signal, the portion decoded determined by the baud rate and the address of the selective call receiver.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: December 1, 1992
    Assignee: Motorola, Inc.
    Inventors: Leonard E. Nelson, Robert J. Schwendeman, Michael J. DeLuca, David F. Willard, Jerry L. A. Sandvos, William V. Braun
  • Patent number: 5153582
    Abstract: A paging system with a remote pager which includes a transmitter with a plurality of individually selectable encoded acknowledge signals. The system includes apparatus at the paging terminal for composing messages with a primary message and a plurality of alternate responses, each response corresponding to one of the acknowledge signals. Upon reception of the page, the pager is operated by selecting the acknowledge signal corresponding with the desired response to the primary message. Transmission of the selected acknowledge signal acknowledges reception of the page and, simultaneously, answers the primary message.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: October 6, 1992
    Assignee: Motorola, Inc.
    Inventor: Walter L. Davis
  • Patent number: 5150110
    Abstract: A selective call communication system (300), operates to transmit an information signal (501) from a message origination site (305) to a plurality of transmitting sites (310, 311, 312). The transmitting sites (310, 311, 312), in turn, transmit and re-transmit the information signal (504) received from the message origination site (305).
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: September 22, 1992
    Assignee: Motorola, Inc.
    Inventor: Robert L. Breeden
  • Patent number: 5146217
    Abstract: A selective call receiver 10 requires an access authorization code prior to presenting selected messages and to override a lockout mode.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: September 8, 1992
    Assignee: Motorola, Inc.
    Inventors: Thomas F. Holmes, Karen M. Leonard
  • Patent number: 5138311
    Abstract: A communication system includes an input (202) for requesting and receiving a first message information format and for requesting and receiving a second message information format, and controller (210) for detecting a measure of communication activity and for comparing the measure of communication activity to a threshold that is adaptable by the controller (210) as a function of the communication activity. The communication system accepts the first message information format when the measure of communication activity is below the threshold (604, 610, 606, and 608), and accepts the second message information format when the measure of communication activity is above the threshold (604, 610, 612, 614, and 616).
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: August 11, 1992
    Assignee: Motorola, Inc.
    Inventor: Morton Weinberg
  • Patent number: 5128665
    Abstract: A paging system has a signal for transmitting a variable amount of messages to paging receivers. The signal has a synchronization signal, an address field, an information and a boundary signal indicative of the boundary between the address field and the information field. Each message has addresses which are included within the address field and may have message information which is included in the information field. The information field includes two portions, a first portion having a plurality of packets for holding a predetermined amount of information and a second portion for holding a variable amount of information. If the information associated with a messasge is less than the predetermined amount, the message information is stored in the first portion of the information field.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: July 7, 1992
    Assignee: Motorola, Inc.
    Inventors: Michael J. DeLuca, Gregory O. Snowden, Robert J. Schwendeman, Leon Jasinski
  • Patent number: 5121503
    Abstract: This invention relates to a satellite signalling system, such as a satellite paging system, having signal coverage over a very wide area. The satellite signalling system comprises a satellite to which is coupled an antenna for providing a signal beam having a variable beam area. The satellite can control the position of the antenna such that the signal beam can be directed in a predetermined sequence to a plurality of locations on earth. The antenna is arranged to vary the signal beam's area in dependence on the location to which the signal beam is directed. The signal beam comprises a data signal having a data rate which can be varied by the antenna in dependence on the beam area.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: June 9, 1992
    Assignee: Motorola, Inc.
    Inventor: Walter L. Davis
  • Patent number: 5113092
    Abstract: A differential voltage comparator circuit comprises a differential pair (802 and 804) electrically coupled to a biasing network (806) and a loading network (808). The differential pair circuit comprises a first (802) and a second (804) controllable electron valves arranged in a differential pair configuration. The first and second electron valve drains (811 and 810) are electrically coupled to the loading network (808). The first and second electron valve sources (822 and 824) are electrically coupled to the biasing network (806). The first and second electron valve control gates (834 and 836) are electrically coupled to respective first and second input voltage potentials (V1 and V2). Lastly, the first and second electron valve bodies (812 and 814) are electrically coupled to respective first and second body effect voltage potentials (VB1 and VB2) that are not the same voltage potential.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: May 12, 1992
    Assignee: Motorola, Inc.
    Inventor: Barry W. Herold
  • Patent number: 5109220
    Abstract: A selective call controller, such as a paging terminal, and a method therefor is provided for receiving calls comprising first and second types of signal, such as numeric/alphanumeric or modem/DTMF. A determination is made of the type of signal being received, and a destination address and message signal is selected accordingly.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: April 28, 1992
    Assignee: Motorola, Inc.
    Inventors: Robert L. Breeden, Victor Jensen, Craig S. Wallace
  • Patent number: 5109176
    Abstract: Two or more crystal filter blanks are mounted together in such a manner so as to minimize the printed circuit board surface area occupied by their aggregate footprint and to minimize the vibratory and oscillatory interference among the cyrstal filters. Mounting devices are coupled to a first nonvibratory node and a second nonvibratory node of the crystal blanks to minimize vibrational and oscillatory interference between the crystal filters. Insulating material is disposed between the crystal blanks for electrically insulating and physically separating the crystal blanks from each other to additionally minimize electrical and vibrational interference between the crystal blanks.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: April 28, 1992
    Assignee: Motorola, Inc.
    Inventors: Tuan K. Nguyen, Thomas J. Rollins, Charles W. Snyder, Charles W. Mooney
  • Patent number: 5109544
    Abstract: A receiver (200) includes an automatic frequency controller that determines the frequency of a receiver signal, and a calculates a frequency error from the received signal. The frequency error is used to calculate a correction factor (316) that is used to adjust the frequency of an oscillator (308) in response to the determined error.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: April 28, 1992
    Assignee: Motorola, Inc.
    Inventors: James G. Mittel, Walter L. Davis, Sergio Fernandez, Lorenzo A. Ponce de Leon, Kazimierz Siwiak
  • Patent number: D327066
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: June 16, 1992
    Assignee: Motorola, Inc.
    Inventors: William J. Scheid, Richard J. Toth, Fernando Gomez
  • Patent number: D328763
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: August 18, 1992
    Assignee: Motorola, Inc.
    Inventors: Joseph E. Laviana, William J. Scarpone, Jack P. Indekeu
  • Patent number: D329221
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: September 8, 1992
    Assignee: Motorola, Inc.
    Inventor: Bee Lay Khoo
  • Patent number: D334183
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: March 23, 1993
    Assignee: Motorola, Inc.
    Inventors: Mark R. Malon, Chuck Weyant