Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1997-05-30
1999-03-23
Liang, Regina
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
36416709, G09G 508
Patent
active
058866841
ABSTRACT:
A micromanipulator system has a stepper motor driven at a microstep, and having a stepping angle which is subdivided in units of a predetermined reference subdivision. A micromanipulator moves an instrument by the stepper motor, and an input device inputs either a moving speed of the fine instrument or a moving position thereof. A present position calculating device calculates a present position of the stepper motor in a virtual subdivision unit which is obtained by subdividing the reference subdivision unit to a preselected subdivision number. A speed calculating device calculates a drive speed of the stepper motor based either on the moving speed or the moving position, which are entered from the input device. An output pulse setting device determines a target output pulse, and an energizing signal outputting device energizes the stepper motor in response to the target output pulse. The stepper motor is independently provided on the micromanipulator so as to move the fine instrument in a plurality of axial directions. A moving ratio calculating device calculates a ratio of moving amounts along the axial directions based upon a moving angle of the fine instrument. The input device calculates either the moving speed or the moving position along the respective axial directions based upon the ratio of moving amounts.
REFERENCES:
patent: 5325289 (1994-06-01), Togawa
patent: 5410638 (1995-04-01), Colgate et al.
Inoue Kohji
Kaneuchi Takahiro
Miura Makoto
Yamashita Mitsuo
Liang Regina
Shimadzu Corporation
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