Pen recorder with improved accuracy

Details Pen recorder with improved accuracy Pen recorder with improved accuracy

1987-03-30

1988-06-14

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

Stylus feature

G01D 1516

Patent

active

047515260

ABSTRACT:
A pen recorder includes a pen position detecting portion for periodically or nonperiodically detecting the position of a pen, and a position correcting circuit for calculating a driving amount and a driving direction of a motor used for correcting a pen position, in accordance with a pen position detected by the pen position detecting portion and a recording position of the pen corresponding to an input signal. The pen position detecting portion detects an actual position of the pen when the pen is moved to perform a recording operation in response to the input signal. In accordance with the actual pen position and the recording position of the pen corresponding to the input signal, a driving amount and a driving direction of the motor for moving the pen are calculated by the position correcting circuit, to thereby correct the pen position.

REFERENCES:
patent: 4230399 (1980-10-01), Moyroad
patent: 4444519 (1984-04-01), Howell et al.
patent: 4595278 (1986-06-01), Matsuo

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