Input method of encoder signals

Details Input method of encoder signals Input method of encoder signals

2005-11-22

2005-11-22

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Digital pattern reading type converter

With directional discrimination

Reexamination Certificate

active

06967595

ABSTRACT:
The present invention relates to an input method of encoder signals, and more particularly, to an input method of encoder signals which senses encoder signals by setting a predetermined signal sensing period at which the encoder signals to be input are sensed, and adjusts sensitivity according to the input of the encoder signals by using input period and number of times of the encoder signal. In the present invention, an output period of interrupt signals output from a microcontroller is set to be shorter than an output period of the encoder signals. In addition, for the control according to the operation of the encoder, the microcontroller determines an input period of the encoder signals and then determines whether the encoder signals are input continuously or discontinuously. If the encoder signals are continuously input, the sensitivity of the encoder signals is adjusted in order to select the next item in the initial state by counting the input number of times of the encoder signals. According to the present invention as described above, the microcontroller cannot omit any one of the encoder signals for the interrupt period. In addition, according to the present invention, it is possible to precisely select the desired item by adjusting the sensitivity according to the input of the encoder signals.

REFERENCES:
patent: 4427970 (1984-01-01), Devol
patent: 5321638 (1994-06-01), Witney
patent: 6357244 (2002-03-01), Mori
patent: 6679071 (2004-01-01), Storey et al.

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