Patents by Inventor Bryan D. Woll
Bryan D. Woll 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).
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Patent number: 6412901Abstract: A monitoring system monitors a pressure wave developed in the surrounding ambient environment during inkjet droplet formation. The monitoring system uses either acoustic, ultrasonic, or other pressure wave monitoring mechanisms, such as a laser vibrometer, an ultrasonic transducer, or an accelerometer sensor, for instance, a microphone to detect droplet formation. One sensor is incorporated in the printhead itself, while others may be located externally. The monitoring system generates information used to determine current levels of printhead performance, to which the printer may respond by adjusting print modes, servicing the printhead, adjusting droplet formation, or by providing an early warning before an inkjet cartridge is completely empty. During printhead manufacturing, an array of such sensors may be used in quality assurance to determine printhead performance. An inkjet printing mechanism is also equipped for using this monitoring system, and a monitoring method is also provided.Type: GrantFiled: April 24, 2001Date of Patent: July 2, 2002Assignee: Hewlett-Packard CompanyInventors: Wen-Li Su, Trudy L. Benjamin, Steven B. Elgee, Thomas F. Uhling, Bruce A. Axten, Kerry J. Lundsten, Xiuting C. Man, Tamara L. Hahn, Michael T. Dangelo, Bryan D. Woll, Timothy L. Weber, James W Pearson, Iue-Shuenn Chen
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Publication number: 20010028371Abstract: A monitoring system monitors a pressure wave developed in the surrounding ambient environment during inkjet droplet formation. The monitoring system uses either acoustic, ultrasonic, or other pressure wave monitoring mechanisms, such as a laser vibrometer, an ultrasonic transducer, or an accelerometer sensor, for instance, a microphone to detect droplet formation. One sensor is incorporated in the printhead itself, while others may be located externally. The monitoring system generates information used to determine current levels of printhead performance, to which the printer may respond by adjusting print modes, servicing the printhead, adjusting droplet formation, or by providing an early warning before an inkjet cartridge is completely empty. During printhead manufacturing, an array of such sensors may be used in quality assurance to determine printhead performance. An inkjet printing mechanism is also equipped for using this monitoring system, and a monitoring method is also provided.Type: ApplicationFiled: April 24, 2001Publication date: October 11, 2001Inventors: Wen-LI Su, Trudy L. Benjamin, Steven B. Elgee, Thomas F. Uhling, Bruce A. Axten, Kerry J. Lundsten, Xiuting C. Man, Tamara L. Hahn, Michael T. Dangelo, Bryan D. Woll, Timothy L. Weber, James W. Pearson, Iue-Shuenn Chen
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Patent number: 6260941Abstract: A monitoring system monitors a pressure wave developed in the surrounding ambient environment during inkjet droplet formation. The monitoring system uses either acoustic, ultrasonic, or other pressure wave monitoring mechanisms, such as a laser vibrometer, an ultrasonic transducer, or an accelerometer sensor, for instance, a microphone to detect droplet formation. One sensor is incorporated in the printhead itself, while others may be located externally. The monitoring system generates information used to determine current levels of printhead performance, to which the printer may respond by adjusting print modes, servicing the printhead, adjusting droplet formation, or by providing an early warning before an inkjet cartridge is completely empty. During printhead manufacturing, an array of such sensors may be used in quality assurance to determine printhead performance. An inkjet printing mechanism is also equipped for using this monitoring system, and a monitoring method is also provided.Type: GrantFiled: April 9, 1999Date of Patent: July 17, 2001Assignee: Hewlett-Packard CompanyInventors: Wen-Li Su, Trudy L. Benjamin, Steven B. Elgee, Thomas F. Uhling, Bruce A. Axten, Kerry J. Lundsten, Xiuting C. Man, Tamara L. Hahn, Michael T. Dangelo, Bryan D. Woll, Timothy L. Weber, James W Pearson, Iue-Shuenn Chen
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Patent number: 5929875Abstract: A monitoring system monitors a pressure wave developed in the surrounding ambient environment during inkjet droplet formation. The monitoring system uses either acoustic, ultrasonic, or other pressure wave monitoring mechanisms, such as a laser vibrometer, an ultrasonic transducer, or an accelerometer sensor, for instance, a microphone to detect droplet formation. One sensor is incorporated in the printhead itself, while others may be located externally. The monitoring system generates information used to determine current levels of printhead performance, to which the printer may respond by adjusting print modes, servicing the printhead, adjusting droplet formation, or by providing an early warning before an inkjet cartridge is completely empty. During printhead manufacturing, an array of such sensors may be used in quality assurance to determine printhead performance. An inkjet printing mechanism is also equipped for using this monitoring system and a monitoring method is also provided.Type: GrantFiled: July 24, 1996Date of Patent: July 27, 1999Assignee: Hewlett-Packard CompanyInventors: Wen-Li Su, Trudy L. Benjamin, Steven B. Elgee, Thomas F. Uhling, Bruce A. Axten, Kerry J. Lundsten, Xiuting C. Man, Tamara L. Hahn, Michael T. Dangelo, Bryan D. Woll, Timothy L. Weber, James W Pearson, Iue-Shuenn Chen
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Patent number: 5581464Abstract: An apparatus and method for recording operational events in an automotive radar system. The invention provides an Event Recording Apparatus (ERA) that records selectable vehicle performance, operational status, and/or environment information, including information useful for accident analysis and updated software for use by a system processor capable of reading data from the ERA. The preferred embodiment of the ERA comprises a non-volatile solid-state memory card, a memory card adapter located in a vehicle, and a microprocessor, either as part of the memory card or embedded in a system within the vehicle, for controlling the storage of data within the memory card.Type: GrantFiled: October 11, 1994Date of Patent: December 3, 1996Assignee: Vorad Safety Systems, Inc.Inventors: Jerry D. Woll, Bryan D. Woll, Van R. Malan
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Patent number: 5465079Abstract: A method and apparatus for evaluating a driver's performance under actual real-time conditions and for using such evaluations to determine the driver's ability to safely operate a vehicle compares the information gathered by a radar system and other sensors with information previously stored in an event recording device. Conditions monitored are used to make a determination as to whether the driver is performing in conformity with normal driving standards and the driver's own past performance. The driver's performance is constantly monitored and compared to that driver's past performance to determine whether the driver's present performance is impaired, and if so, whether the impairment is detrimental to the driver's ability to safely operate the vehicle.Type: GrantFiled: August 13, 1993Date of Patent: November 7, 1995Assignee: Vorad Safety Systems, Inc.Inventors: Paul J. Bouchard, Jerry D. Woll, Bryan D. Woll, Jimmie R. Asbury
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Patent number: 5402129Abstract: A monopulse vehicular radar system for tracking a target about an automotive vehicle senses a transmitted signal reflected back from the target and received at two different locations, determines the sum and the difference of the reflected signals sensed at the two locations, and compares the sum and difference to determine the deviation of the target from a reference azimuth. A source frequency provided by a Gunn diode is applied to and transmitted by a two-lobe monopulse antenna. The antenna lobes detect the reflected signals from the target by sensing them at the two different lobes. A hybrid junction provides sum and difference signals to mixers which homodyne the signals to produce sum and difference Doppler frequency signals using the source frequency. The Doppler frequency signals are amplified and then compared to determine the deviation of the target from the reference azimuth.Type: GrantFiled: August 4, 1993Date of Patent: March 28, 1995Assignee: Vorad Safety Systems, Inc.Inventors: Robert C. Gellner, Bryan D. Woll, Jerry D. Woll, John W. Davis, Duane G. Tubbs
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Patent number: 5302956Abstract: A vehicular collision avoidance radar system using digital signal processing techniques including a transmit section that generates a two channel transmit frequency. An antenna both transmits the transmit signal and receives a reflected receive signal. A Schottky diode mixer generates a difference signal having a frequency equal to the transmit frequency minus the receive frequency. A signal switch in a front end electronics section time demultiplexes and samples the channel 1 and channel 2 signals. The samples are coupled to a two-channel analog to digital (A/D) converter. A digital electronics section receives the digital information and performs a Fast Fourier Transform (FFT) on each channel of digital data to determine relative speed and range of a target based upon the frequency and the difference in phase of the two channels.Type: GrantFiled: August 14, 1992Date of Patent: April 12, 1994Assignee: Vorad Safety Systems, Inc.Inventors: Jimmie R. Asbury, Bryan D. Woll, Van R. Malan
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Patent number: RE36819Abstract: A monopulse vehicular radar system for tracking a target about an automotive vehicle senses a transmitted signal reflected back from the target and received at two different locations, determines the sum and the difference of the reflected signals sensed at the two locations, and compares the sum and difference to determine the deviation of the target from a reference azimuth. A source frequency provided by a Gunn diode is applied to and transmitted by a two-lobe monopulse antenna. The antenna lobes detect the reflected signals from the target by sensing them at the two different lobes. A hybrid junction provides sum and difference signals to mixers which homodyne the signals to produce sum and difference Doppler frequency signals using the source frequency. The Doppler frequency signals are amplified and then compared to determine the deviation of the target from the reference azimuth.Type: GrantFiled: June 11, 1996Date of Patent: August 15, 2000Assignee: Vorad Safety Systems, Inc.Inventors: Robert C. Gellner, Bryan D. Woll, Jerry D. Woll, John W. Davis, Duane G. Tubbs