Patents Represented by Attorney Wayne J. Egan
  • Patent number: 6336982
    Abstract: A welded seam of an imaging belt comprises a surface roughness. To reduce the surface roughness, the welded seam is treated by compressing a portion of the belt comprising the welded seam and adjacent belt portions and, while compressing, heating the welded seam to a heating temperature near but less than the glass transition temperature of the imaging layer of the belt, then cooling the welded seam to a cooling temperature. The compressing continues while the heating and cooling steps are repeated until the surface roughness is determined to be satisfactory. The process then ceases.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: January 8, 2002
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, William A. Hammond, Edward L. Schlueter, Jr., Constance J. Thornton
  • Patent number: 6318223
    Abstract: A novel method and apparatus for producing an endless flexible seamed belt using templates is disclosed. A first form of the template is a mask template with a template aperture in the form of a puzzle cut pattern to be used in combination with an excimer laser. The template is placed between the excimer laser source and the belt material to be cut. As the excimer laser traverses the width of the belt, the laser forms a puzzle cut pattern on the belt. A second form of the template is a punch and die having patterned edges in the form of a puzzle cut pattern with extremely small nodes and kerfs. The cutting tolerances of the patterned edges make it necessary to fix the punch with respect to the die so that there is no misalignment of the punch and die between cutting operations. This is accomplished by resiliently fixing the punch to the die, rather than having the punch attached to the force generating assembly as in normal punch and die assemblies.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: November 20, 2001
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, William A. Hammond, Edward L. Schlueter, Jr., Constance J. Thornton
  • Patent number: 6318841
    Abstract: The silicon fluid ejector of the present invention includes an electrostatically actuated micromachined positive displacement mechanism consisting of a piston, piston containment structure, piston retraction mechanism and an ejection orifice. These features provide for very low cost of production, high reliability and “on demand” drop size modulation. The fluid ejector mechanism can be easily produced via monolithic batch fabrication based on the common production technique of surface micromachining.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: November 20, 2001
    Assignee: Xerox Corporation
    Inventors: Charles P. Coleman, Arthur M. Gooray, George J. Roller, Kathleen A. Feinberg
  • Patent number: 6315475
    Abstract: A drive belt system comprises a drive belt that is conductive. The drive belt system further comprises ground coupling means, such as a conductive brush or rubbing material, arranged for coupling the drive belt to ground. As a result, arcing in the drive belt system is reduced.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: November 13, 2001
    Assignee: Xerox Corporation
    Inventors: Daniel L. Carter, Timothy M. Minerd
  • Patent number: 6308032
    Abstract: A rotatable charging apparatus includes a length extending between a first end and a second end, with the rotatable charging apparatus centered about an axis parallel to the length. The rotatable charging apparatus outer periphery forms N apparatus positions. One charging device is fixed to each of N−1 apparatus positions. The remaining (Nth) apparatus position is devoid of a charging device, thus forming an “empty” charging device position. A host printing machine selectively causes the rotatable charging apparatus to rotate about its axis thereby selectively position any of its N−1 charging devices to face a proximately-located photosensitive element. When a problem exists with the current charging device, or when the total number of operating hours of the current charging device exceeds a fixed threshold, the printing machine causes the rotatable charging apparatus to rotate from its current charging device to position a new charging device facing the photosensitive element.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: October 23, 2001
    Assignee: Xerox Corporation
    Inventors: Scott D. Weber, Kenneth W. Pietrowski, Joseph D. LaRussa, John S. Facci, Heiko Rommelmann, Alberto Rodriguez, Christopher Snelling
  • Patent number: 6275585
    Abstract: A communication system (100) includes an infrastructure (150) and at least one vehicle (101), the vehicle including at least one vehicle system (103), and at least one user system (113). The infrastructure includes an application (155) which, in turn, is arranged to reprogram the vehicle system, the user system, or both.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: August 14, 2001
    Assignee: Motorola, Inc.
    Inventors: Sewim F. Ablay, Mark A. Gannon, Ron G. Akers, Bryan A. Thale
  • Patent number: 6181929
    Abstract: A radio frequency communication system includes a cell site (FIG. 1), the cell site including an on-line controller (100), an off-line controller (101) and one or more peripheral units (107, 108, 110, 112, 114) arranged to support the on-line controller. The cell site is arranged to switch from the on-line controller to the off-line controller based upon a failure of the on-line controller or a failure of any peripheral unit of the one or more peripheral units arranged to support the on-line controller.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: January 30, 2001
    Assignee: Motorola, Inc.
    Inventors: Frank W. Korinek, Jeffrey J. Blanchette, Michael J. Batz
  • Patent number: 6179210
    Abstract: An improved punch out pattern for a hot melt tape used in smartcard manufacture. The hot melt tape is provided with punch out channels that direct the overflow of conductive adhesive away from the surface of the hot melt tape. In a preferred embodiment, the punch out channels are dimensioned to direct the overflow away from one another and toward a module receiving cavity formed in the smartcard body. In an alternate embodiment where it may not be feasible to direct overflow toward the overmold receiving cavity without affecting the electrical or mechanical performance of the smartcard, the punch out channels are dimensioned to direct overflow away from one another and along the periphery of the hot melt tape area. In either scenario, the channels do not interfere with module adhesion and, by virtue of the channeling of overfill matter, direct the conductive adhesive away from other connections in close vicinity and thus avoid the possibility of shorting.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: January 30, 2001
    Assignee: Motorola, Inc.
    Inventors: Kevin L. Haas, Kiron P. Gore
  • Patent number: 6144905
    Abstract: A vehicle (100) has a plurality of vehicle systems (11, 12, 13) and a plurality of user devices (40, 50, 60), each vehicle system including a unique function. The vehicle also has a vehicle bus (10) and a user bus (30), the vehicle bus coupled to the plurality of vehicle systems, the user bus coupled to the plurality of user devices, the vehicle bus coupled to the user bus by means of a gateway (20). Each function corresponding to each vehicle system is registered in the gateway. As a result, the user devices can determine and interact with the functionality of the individual vehicular devices.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: November 7, 2000
    Assignee: Motorola, Inc.
    Inventor: Mark A. Gannon
  • Patent number: 6144949
    Abstract: A radio frequency communication system subscriber (110) has a unique identification code, public key and private key, and stores the identification code and public key for other system subscribers in its memory (115). When transmitting, the subscriber includes its identification code in a transmitted message (160) and encodes the transmitted message with its private key. When receiving, the subscriber authenticates a received message (170) by accessing the sending subscriber (120)'s identification code from the message, retrieving the sending subscriber's public key from memory and decoding the message with the retrieved key.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: November 7, 2000
    Assignee: Motorola, Inc.
    Inventor: Michael Gilbert Harris
  • Patent number: 6145082
    Abstract: A vehicle (100) includes vehicle systems (11-13) coupled to a vehicle bus (10) and user devices (40-60) coupled to a user bus (30), the user bus coupled to the vehicle bus by a gateway (20). The user bus transports user information and the vehicle bus transports vehicle information. Based on one or more gateway rules, the gateway transports vehicle information to the user bus for the benefit of target user devices. Also based on these gateway rules, the gateway transports user information to the vehicle bus for the benefit of target vehicle systems. The gateway rules are programmed by both user devices and vehicle systems as follows: First, a proposed rule is provided (303) to the gateway. Second, the gateway determines (305) when to accept the proposed rule based on a variety of factors. Third, when the proposed rule is accepted, the proposed rule becomes (307) a gateway rule.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: November 7, 2000
    Assignee: Motorola, Inc.
    Inventors: Mark Alan Gannon, Michael Barnea, Allan M. Kirson
  • Patent number: 6138018
    Abstract: A wireless communication system includes switching infrastructure (150) and at least one location area ("LA") having a multiplicity of cells (the "multiple-cell LA") (103). When a mobile (100) enters a cell belonging to the multiple-cell LA, the mobile is arranged with a cell-registration feature that enables it to register with the serving cell site, thus forming a registration with the cell site. When the mobile enters a further cell belonging to the multiple-cell LA, the mobile registers with the corresponding further cell site, thus forming a registration with the further cell site. When the switching infrastructure receives a call attempt towards the mobile, the switching infrastructure pages the mobile in only those cells in which a cell registration exists for the mobile.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: October 24, 2000
    Assignee: Motorola, Inc.
    Inventors: Ariel Pashtan, Israel A. Cimet
  • Patent number: 6002715
    Abstract: A received signal (310) includes information symbols ("D's") including equidistant symbols that are equidistant from the origin of a complex plane. The D's and corresponding interference signals ("I's") are formed (403) and the quantity of equidistant symbols determined (407). A desired signal portion average is based (409) on the received signal. When the quantity of equidistant symbols exceeds a threshold, an undesired signal portion average is based (413) exclusively on the I's corresponding to the equidistant symbols. Otherwise, the undesired signal portion average is based (423) on the I's corresponding to all received D's, including the equidistant symbols. A received signal quality value is then based on a ratio of the desired signal portion average and the undesired signal portion average.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: December 14, 1999
    Assignee: Motorola, Inc.
    Inventors: Karen A. Brailean, Mark S. Nowak
  • Patent number: 5946632
    Abstract: A radio (101) affiliates with radio frequency sites (135, 145) based on a radio database (110) defining a group of valid site affiliations and a group of invalid site affiliations. Affiliations by the radio are controlled by a controller (120) with a controller database (160) defining a group of allowed site affiliations and a group of non-allowed site affiliations. When the controller database is altered, the radio database is updated to match the altered controller database. When the controller adds a site to its group of allowed site affiliations, it sends an updated radio database to the radio. When the controller adds a site to its group of non-allowed site affiliations, it waits until the radio requests permission to affiliate with that site and then sends an updated radio database to the radio. Upon receipt, the radio replaces its existing radio database with the updated radio database.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: August 31, 1999
    Assignee: Motorola
    Inventors: Steppen A. Yi, Larry M. Peterson
  • Patent number: 5940447
    Abstract: A circuit (34) for data recovery in a wireless powered communication device (10) obviates the need for the costly high power consumption filters of prior art devices by deriving a clock signal from the power coil (18), and then sampling the data coil (20) signal with the derived sampling clock. The step of deriving a clock signal from the power signal causes the component of the power signal present on the data signal to be aliased to DC which is then easily rejected with a low order high pass or bandpass filter (38). Furthermore, the data signal may be amplified to a desired level suitable for amplitude discrimination by a simple comparator circuit (40) with hysteresis. Demodulation of the data signal is easily accomplished in the digital domain using a digital demodulator (32).
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: August 17, 1999
    Assignee: Motorola, Inc.
    Inventors: Lawrence E. Connell, Neal W. Hollenbeck, Kenneth A. Paitl
  • Patent number: 5930304
    Abstract: The present invention expands the range over which a wireless powered communication device (500) and device reader (12) can communicate. In the present invention, circuitry (502) within the device (500) provides for determining a characteristic of the received communication signal. Based upon this signal characteristic data recovery parameters are adapted to enhance data recovery over a maximize communication distance. In a preferred embodiment of the present invention, the magnitude of the power signal is observed. It is known that the power signal varies as an inverse square of the distance of the device (500) to the reader. From this information, a data detection threshold is adjusted to enhance data recovery.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: July 27, 1999
    Assignee: Motorola, Inc.
    Inventors: Neal W. Hollenbeck, Kenneth A. Paitl, Donald B. Lemersal, Jr.
  • Patent number: 5905372
    Abstract: A terminal device powers a portable data device by transmitting in two modes of operation. In a first mode of operation, the terminal transmits to the portable data device a power signal at a first level and a data signal using a first modulation format and a first bit rate. In a second mode of operation, the terminal transmits to the portable data terminal a power signal at a second level and a data signal using a second modulation format and a second bit rate. The terminal determines a requirement to change modes of operation, and changes modes in response to changing power requirements of the portable data device.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: May 18, 1999
    Assignee: Motorola, Inc.
    Inventors: Stephen Leigh Kuffner, Scott Nelson Carney, Thomas Glenn Hall
  • Patent number: 5842127
    Abstract: A wireless communication system includes switching infrastructure (150) and at least one location area ("LA") having a multiplicity of cells (the "multiple-cell LA") (103). When a mobile (100) enters a cell belonging to the multiple-cell LA, the mobile is arranged with a cell-registration feature that enables it to register with the serving cell site, thus forming a registration with the cell site. When the mobile enters a further cell belonging to the multiple-cell LA, the mobile registers with the corresponding further cell site, thus forming a registration with the further cell site. When the switching infrastructure receives a call attempt towards the mobile, the switching infrastructure pages the mobile in only those cells in which a cell registration exists for the mobile.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: November 24, 1998
    Assignee: Motorola, Inc.
    Inventors: Ariel Pashtan, Israel A. Cimet
  • Patent number: 5835485
    Abstract: To set-up a dispatch call, a controller identifies the destination units, destination sites, controlled devices and paths needed to support the call, and which LAN bridges will be used to create the communication paths. The controller then assigns the controlled devices a temporary address identical to the permanent address of one of the controlled devices, and then informs the LAN bridges which LAN ports should carry messages containing the temporary address. With all controlled devices having the same temporary address, and with the LAN bridges ready to pass messages containing the temporary address along a chosen path, the controlled device assigned to support the call request can transmit the messages generated by a source communication unit to other controlled devices using the temporary address. Thus, only one representation of a message produced by the source communication unit is transmitted from the assigned controlled device.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: November 10, 1998
    Assignee: Motorola, Inc.
    Inventors: Gary W. Grube, Michael D. Sasuta, Robert William Furtaw
  • Patent number: 5822314
    Abstract: A method of operation of a communications system, having first (10) and second communications units (12) communicating frame divided information via a relay device (11). The second communications unit (12) transmits a timing signal (step 106) to the first communications unit (10), containing timing information of received timing signals from the first communications unit(10). The first communications unit (10) calculates a timing offset (step 114) for the combined timing delay for transmissions to and from the second communications unit via the relay device and transmits the timing offset (step 116) to the second communications unit. The second communications unit (12) adjusts its timing (step 122) according to the received timing offset. A communications system includes a frame number offset indicator (27) for performing timing synchronisation between the communications units.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: October 13, 1998
    Assignee: Motorola, Inc.
    Inventor: David Chater-Lea