Patents by Inventor David A. Rivera

David A. Rivera has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060112420
    Abstract: Methods and arrangements are disclosed for secure single sign on to an operating system using only a power-on password. In many embodiments modified BIOS code prompts for, receives and verifies the power-on password. The power-on password is hashed and stored in a Platform Configuration Register of the Trusted Platform Module. In a setup mode, the trusted platform module encrypts the operating system password using the hashed power-on password. In a logon mode, the trusted platform module decrypts the operating system password using the hashed power-on password.
    Type: Application
    Filed: November 22, 2004
    Publication date: May 25, 2006
    Applicant: International Business Machines Corporation
    Inventors: David Challener, Steven Goodman, James Hoff, David Rivera, Randall Springfield
  • Publication number: 20040031485
    Abstract: An atomizing nebulizer for dispensing a substance or medicament is described. The nebulizer is formed with a reservoir base releasably secured to an effluent vent cap that together capture a diffuser and integral dispersing baffle that are further formed with an uptake lumen or channel terminating with a nozzle jet. The diffuser dispersing baffle is positioned relative to the jet nozzle to optimize atomization of any of a number of such substances so as to maximize disbursement of the substance. The reservoir base also incorporates a pressurized fluid-accelerating inlet tube terminated with a metering orifice that cooperates with the nozzle jet when the inlet tube is received within the diffuser uptake lumen or channel.
    Type: Application
    Filed: August 19, 2002
    Publication date: February 19, 2004
    Inventors: Andre Rustad, Charlie Atlas, David Rivera
  • Publication number: 20030212911
    Abstract: Enhanced security in controlling access to data files stored in a read/write storage device is achieved in that the storage device may be specifically linked to a specific computer system, and linked in such a way that access will be granted only when a series of exchanges exemplary of that linkage occurs. Access to data stored in a read/write storage device is to be granted only when the device is associated with a specific computer system and further only when appropriate password entry is verified by the storage device.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 13, 2003
    Applicant: International Business Machines Corporation
    Inventors: David Carroll Challener, James Patrick Hoff, Kevin Snow Mccurley, John Hancock Nicholson, David Rivera, James Peter Ward
  • Publication number: 20030159056
    Abstract: An embedded security subsystem, and method for implementing the same, which provide secure controllability of a data security device within a data processing system. The embedded security subsystem of the present invention includes a persistent enable flag for providing control access to the data security device, wherein the persistent enable flag is accessible only in response to a power-on reset cycle of the data processing system. The persistent enable flag is read-only accessible to runtime program instructions. A pending state change flag that is write accessible by runtime program instructions is utilized for setting an intended next state of the persistent enable flag such that control access to the data security device is enabled only during a subsequent power-on reset of said data processing system.
    Type: Application
    Filed: February 15, 2002
    Publication date: August 21, 2003
    Applicant: International Business Machines Corporation
    Inventors: Daryl Carvis Cromer, Scott Thomas Elliott, James Patrick Hoff, Howard Jeffrey Locker, David Rivera, Randall Scott Springfield, James Peter Ward
  • Publication number: 20030056095
    Abstract: A method, system and computer program product for securing decrypted files in a shared environment. A filter driver in a kernel space may be configured to control service requests to encrypted files stored in a shared area, e.g., a shared directory on a disk unit, accessible by multiple users. The filter driver may receive a service request to open an encrypted document in the shared area issued from an authorized user. Upon receiving the encrypted data, the filter driver may decrypt the encrypted data. The filter driver may subsequently store the decrypted data in a file in a non-shared area, e.g., a non-shared directory. The non-shared area may be accessible only by the authorized user that requested access to the encrypted file. By storing the decrypted data in a file in the non-shared area, a file once decrypted may be protected in a file sharing environment.
    Type: Application
    Filed: September 14, 2001
    Publication date: March 20, 2003
    Applicant: International Business Machines Corporation
    Inventors: Scott Thomas Elliott, James Patrick Hoff, Christopher Scott Long, David Rivera, James Peter Ward
  • Publication number: 20030053630
    Abstract: A method and system for control of key pair usage in a computer system is disclosed. The method and system comprise creating key pair material for utilization with an embedded security chip of the computer system. The key pair material includes tag data. The method and system further includes determining whether the key pair material is bound to the embedded security chip based on the tag data.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 20, 2003
    Applicant: International Business Machines Corporation
    Inventors: Scott Thomas Elliott, James Patrick Hoff, Christopher Scott Long, David Rivera, Andy Llovd Trotter, James Peter Ward
  • Patent number: 5812833
    Abstract: I/O control modules (25-29) include a timer bus (71, 72) which may be segmented anywhere along its length. As a result, the channels (86, 87) are partitioned by each timer bus (71, 72) into separate blocks of channels (86, 87) which are provided with access to different timebases by their respective timer bus (71, 72). The channels within one timer bus block (e.g. 86) can be used to perform different function(s) with the potential for no loss of resolution because each channel in a timer bus block (e.g. 86) can concurrently receive the same timebase value from its corresponding timer bus (71). In one embodiment, one end of each timer bus (71, 72) is delineated by a master timer bus control channel (61, 63), and the other end of the timer bus is delineated by a slave timer bus control channel (62, 64).
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: September 22, 1998
    Assignee: Motorola, Inc.
    Inventors: Vernon Bernard Goler, Gary Lynn Miller, David Rivera
  • Patent number: 5634045
    Abstract: Referring to FIGS. 1 and 2, I/O control modules (IOCMs 25-29) have channels which communicate by way of timer buses (71, 72) and pin/status buses (75-77). Channels (86, 87) are partitioned by each timer bus (71, 72) into separate blocks of channels (86, 87) which are provided with access to different timebase values from timebase channels (80, 81) by their respective timer bus (71, 72), so there is no loss of resolution because each channel in a timer bus block (e.g. 86) can concurrently receive the same timebase value from its corresponding timer bus (71). Pin/status buses (75-77) allow simultaneity of control among the channels (e.g. 58) coupled to the same pin/status bus (e.g. 76). Pin/status buses (75-77) and timer buses (71, 72) can be independently partitioned.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: May 27, 1997
    Assignee: Motorola, Inc.
    Inventors: Vernon B. Goler, Gary L. Miller, David Rivera
  • Patent number: 5225818
    Abstract: The thin section data display control panel of the present invention includes a graphic overlay, a diffuser block affixed to the graphic overlay and light emitting diodes surface mounted on a printed circuit board for providing localized sources of light to be transmitted through the diffuser block to the overlay. The graphic overlay is generally opaque, but has translucent areas through which the illumination shines. An overlay reflective portion on a diffuser side of the overlay reflects light back into the diffuser, except in areas adjacent to the translucent areas of the overlay. The diffuser block is affixed to the graphic overlay and is generally transparent for transmitting the light from the light emitting diodes. Block reflective surfaces on the perimeter edges of the diffuser block prevent light from exiting through the edges. Matte surfaces of the diffuser block adjacent the graphic overlay and adjacent the printed circuit board scatter the light transmitted from the light emitting diodes.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: July 6, 1993
    Assignee: Data Entry Products, Incorporated
    Inventors: Weng-Kai K. Lee, David A. Rivera, Kevin M. Myles, H. Michael Berman, Paula C. Willis
  • Patent number: 5223228
    Abstract: A tray is described for storing and transporting a module. The tray includes a slot which can be used to hold the module in an upright position to allow the module to be filled with water.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: June 29, 1993
    Assignee: Baxter International Inc.
    Inventors: Anil M. Telang, David A. Rivera, Michael D. Johnson
  • Patent number: 4930823
    Abstract: A vehicle bumper includes an elongated shell member for attachment to an end portion of a vehicle. An impact member is received within the shell member for limited lateral sliding movement and is biased outwardly through an elongated opening in the shell member. A coil spring biases the impact member outwardly from the shell member and a shock absorber dampens lateral movement of the impact member. An air bag is received in an outwardly opening elongated cavity in the impact member and is inflatable upon a severe impact. A resilient cover which surrounds the impact member and encloses the air bag includes a pair of inwardly extending elongated ribs in frictional engagement with a pair of parallel grooves provided in an outer portion of the impact member. The cover has a padded outer portion for absorbing minor impacts and is released from engagement with the impact member upon inflation of the air bag. An air spoiler may be secured to the shell member.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: June 5, 1990
    Inventor: David Rivera
  • Patent number: 4584698
    Abstract: A data processor having an integral timer including a clock generator producing a specific frequency output comprises a counter chain having an input and output thereof for supplying a fixed frequency divide function. A programmable prescaler couples the clock generator output to the counter chain input for providing a predetermined divisor input to the counter chain. A postscaler operates in consonance with the programmable prescaler coupled to the counter chain output for providing a timer output compensated for the predetermined divisor input. In operation, the timer output has a frequency bearing a constant relationship to the clock generator output frequency independent of the predetermined divisor input of the programmable prescaler.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: April 22, 1986
    Assignee: Motorola, Inc.
    Inventors: James M. Sibigtroth, David Rivera