Patents Represented by Attorney H. Barron

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  • Dot matrix character printing using constrained memory
    Patent number: 4458333
    Abstract: In a wire matrix printer control system, some characters from a finite alphabet are locally stored as compressed dot matrix objects reflectively symmetric about at least one axis. Upon being referenced and ascertained as a compressed object, the bits are applied to the printhead in column major order up to the axis of symmetry and then applied in reverse column major order. For uncompressed objects, the bits are applied only in column major order.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: July 3, 1984
    Assignee: International Business Machines Corporation
    Inventor: Bruce A. Smith