Now showing items 1-4 of 4

    • Method and apparatus for lane sensing for automatic vehicle steering 

      Parker, Donald L.; Roan, Philip (United States. Patent and Trademark OfficeTexas A&M University. Libraries, 1994-06-07)
      A lane sensing system (20) comprises a processor (22) operable to drive an infrared optical transmitter (24). Light is reflected by a center stripe (18) placed in the center of a highway lane. Reflected light is received ...
    • Method of producing a silicon film with micropores 

      Parker, Donald L.; Hall, Kenneth R.; Holste, James C. (United States. Patent and Trademark OfficeTexas A&M University. Libraries, 1989-01-31)
      The present invention relates to a method of producing micropores having diameters of less than 20 nanometers in straight sides in silicon film. The silicon film produced by this process may be attached to a substrate ...
    • Oxidized porous silicon field emission devices 

      Yue, Wing K.; Parker, Donald L.; Weichold, Mark H. (United States. Patent and Trademark OfficeTexas A&M University. Libraries, 1995-07-04)
      A low voltage vacuum field emission device and method for manufacturing is provided. The devices are fabricated by anodizing a heavily doped silicon wafer substrate (12) in concentrated HF solution, forming extremely sharp ...
    • Range measurement system 

      Parker, Donald L.; Roan, Tian M. P. (United States. Patent and Trademark OfficeTexas A&M University. Libraries, 1995-06-27)
      A vehicle control system (12) is provided which comprises a range measurement system (14) which transmits a signal (20) to a target (22) and receives an echo signal (24) returned from the target (22). The range measurement ...