Patents Assigned to AT&T Technologies Incorporated
  • Patent number: H2
    Abstract: An arrangement is described which multiplies the apparent horizontal resolution of color video display systems without requiring that the video memory in the system be multiplied equivalently. The arrangement may advantageously comprise any given number of bits per picture element for defining a displayable number of colors. One or more additional bit(s) per picture element is provided to convey positional information used for determining the location in a display at which the bits of color information are displayed. The additional memory requirement is limited to this one or more additional bits for each picture element in the display, instead of having the effect of multiplying the number of bits stored per PEL.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: December 3, 1985
    Assignee: AT&T Technologies Incorporated
    Inventor: Gerald S. Soloway
  • Patent number: H445
    Abstract: A method of forming a direct contact lens on a light emitting device strure is disclosed which facilitates the formation of large arrays of light emitting devices. The method uses a printing fixture including a large number of vertically oriented pins which is dipped into a bath of a liquid epoxy material. The printing fixture is then placed over the array structures and lowered until the pins contact the diodes. When the printing fixture is subsequently raised, the lens material will adhere to the associated devices and flow to completely encapsulate the device and a substantial portion of the device mounting structure.
    Type: Grant
    Filed: November 29, 1985
    Date of Patent: March 1, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Technologies, Incorporated
    Inventors: Anne B. Bock, Samuel E. Kurtz, Thomas E. Seibert
  • Patent number: H551
    Abstract: An optical package includes a two-piece fiber subassembly which allows for separate axial and radial alignment of the fiber to the active optical device. The subassembly consists of an inner ferrule encasing the fiber and an outer sleeve which holds the ferrule. The ferrule is moved axially within the sleeve to perfect the axial alignment of the fiber and the device. The sleeve includes a number of openings around its circumference to expose the ferrule. Once axial alignment is achieved, the outer sleeve is attached to the ferrule through these openings to fix the axial alignment.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: December 6, 1988
    Assignees: American Telephone and Telegraph Company, Bell Telephone Laboratories, Incorporated, AT&T Technologies, Incorporated
    Inventors: Ghazi M. Chaoui, Charles R. Fegley, Jan Lipson, Ralph S. Moyer, Thomas S. Stakelon