High speed basic and condensed tab racks

Details High speed basic and condensed tab racks High speed basic and condensed tab racks

1979-12-26

1982-09-21

Wright, Jr., Ernest T.

Typewriting machines

Control of print position along print-line by signal...

364900, B41J 2518

Patent

active

043504558

ABSTRACT:
In a high speed trail printer an improved electronic tab rack is provided. A method and apparatus are disclosed for decreasing the time required to determine the location of the next tab involving accessing a condensed tab rack. The condensed tab rack is set up when the tabs are entered and contains for each byte of the basic tab rack one bit indicating whether or not the associated tab rack byte specifies at least one tab stop position.

REFERENCES:
patent: 3832697 (1974-08-01), Kashio
patent: 3885663 (1975-05-01), Suzuki
patent: 4031996 (1977-06-01), Busch
patent: 4131949 (1978-12-01), Fletcher et al.
patent: 4178108 (1979-12-01), Kane
patent: 4212553 (1980-07-01), Acosta et al.
IBM Technical Disclosure Bulletin, "Method of Tab Storage", Bowles et al., vol. 17 No. 1 Jun. 1974, pp. 131-132.

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