Boots – shoes – and leggings
Patent
1978-03-01
1980-10-14
Smith, Jerry
Boots, shoes, and leggings
340727, 340731, G06F 3153
Patent
active
042285100
ABSTRACT:
The characters are produced electronically through the implementation of character instructions which are stored in a memory in the form of a series of binary words. Each binary word is an instruction for producing a single straight-line portion, or stroke, of a complete character. Each such instruction word contains a count portion, which identifies the length of the stroke, a slope portion, which identifies the slope of the stroke, and a visibility portion, which identifies the visibility of the stroke. The character generator includes a counter which is preset to the amount of the count portion of each instruction word. The counter is counted down by a clock operating at a predetermined frequency. The slope portion of each instruction word is converted by a decoder into its respective X and Y component parts. These X and Y components are then applied to separate data channels which include adder/subtractor units under the control of the clock. A cumulative voltage signal is produced by each data channel and is applied to electron beam deflection circuits, which control the movement of the beam accordingly to construct the desired character.
REFERENCES:
patent: 3775760 (1973-11-01), Strathman
patent: 3821729 (1974-06-01), Schultze
patent: 3936664 (1976-02-01), Sato
patent: 3952297 (1976-04-01), Stauffer et al.
patent: 3976991 (1976-08-01), Hickin et al.
patent: 4115863 (1978-09-01), Brown
Johnson Walter J.
Selis James J.
Smith Jerry
The Boeing Company
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