Boots – shoes – and leggings
Patent
1988-11-18
1990-09-18
Chin, Gary
Boots, shoes, and leggings
364469, 364507, 364552, 250562, 356237, 340675, G06F 1520, G01N 3324
Patent
active
049583077
ABSTRACT:
A roll mark inspection apparatus for a system for rolling and moving a strip uses reduction rolls. An image sensor scans widthwise the strip which is rolled and moved by the reduction rolls and outputs an image signal representing a surface state of the strip per unit width. A clock generator generates a clock signal synchronized with the running of the strip moved by the reduction rolls. An autocorrelation calculator sequentially receives the image signal in synchronism with the clock signal, and performs a predetermined autocorrelation calculation processing on the contents of the received signal and outputs an autocorrelation value. A comparator compares a predetermined comparison value for discriminating information corresponding to a roll mark on the surface of the strip with the autocorrelation value, and outputs a roll mark signal discriminated from the autocorrelation value by the predetermined comparison value. A CRT display device updates and displays image information corresponding to the roll mark signal each time the strip runs by a predetermined distance corresponding to a circumferential length of the reduction rolls.
REFERENCES:
patent: 4292672 (1981-09-01), Southgate
patent: 4334282 (1982-06-01), Whitehouse
patent: 4495587 (1985-01-01), Plante et al.
patent: 4519041 (1985-05-01), Fant et al.
patent: 4578770 (1986-03-01), Mitani
patent: 4587617 (1986-05-01), Barker et al.
patent: 4677578 (1987-06-01), Wright et al.
patent: 4719583 (1988-01-01), Takafuji et al.
Chin Gary
Kabushiki Kaisha Toshiba
Mattson Brian M.
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