Boots – shoes – and leggings
Patent
1996-05-22
1998-05-05
Voeltz, Emanuel T.
Boots, shoes, and leggings
178 18, 178 19, 345156, 345158, 345165, G08C 2100
Patent
active
057484945
ABSTRACT:
A method and arrangement for resolution enhancement of a coordinate input device. The method includes the steps of receiving a predetermined number of light beams, which are generated from a light source and passed through a rotating grating disc, by a light detector; detecting the intensity of the light beams by the light detector so as to receive a continuous response voltage signal; converting the continues response voltage signal to a digital signal; and distinguishing the digital signal as at least three different detecting modes by a plurality of predetermined critical values for enhancing the resolution of the coordinate input device. The arrangement includes a light detector having at least two light sensors for receiving at least two light beams generated from a light source and passed through a rotatable grating disc, wherein the light sensors detect the intensity of the light beams as at least three different detecting modes and generate a predetermined number of continuous response voltage signals. A pair of analog digital converters, which are connected with the two light sensors, are adapted to transform the continuous response voltage signals to a predetermined number of digital signals for distinguishing the varying between the three different detecting modes. A computing determination logic is connected with the pair of analog digital converted for distinguishing the different detecting modes of the digital signals according to a plurality of predetermined critical values for resolution enhancement.
REFERENCES:
patent: 3865976 (1975-02-01), Grenier
patent: 4531230 (1985-07-01), Brogardh
patent: 4568182 (1986-02-01), Modjallal
patent: 4989040 (1991-01-01), Matsuo et al.
patent: 5363120 (1994-11-01), Drumm
patent: 5557450 (1996-09-01), Sun
Chan Raymond Y. C.
Smith Demetra R.
Voeltz Emanuel T.
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