Electricity: motive power systems – Positional servo systems – With particular motor control system responsive to the...
Patent
1995-12-27
1997-12-30
Wysocki, Jonathan
Electricity: motive power systems
Positional servo systems
With particular motor control system responsive to the...
318696, H02P 700
Patent
active
057034540
ABSTRACT:
An image reading device has two different modes for controlling the switchover of a motor drive pattern. Either one of the two modes is selected in accordance with various drive conditions including a drive speed. In one mode, in response to every drive pattern switching pulse, pattern data are output by software processing while a position signal is referenced. In the other mode, a macro transfer function is used to output the pattern data by DMA (Direct Memory Access) while the position signal is referenced at every repetition cycle of the drive patterns. The device is capable of reading an image at high speed by switching the drive pattern rapidly, thereby obviating irregularity in a reference position for reading an image.
REFERENCES:
patent: 3789971 (1974-02-01), Deyesso et al.
patent: 3944902 (1976-03-01), Lacorre et al.
patent: 4025837 (1977-05-01), Meier et al.
patent: 4340848 (1982-07-01), Hanagata et al.
patent: 4362980 (1982-12-01), Itzkowitz
patent: 4525658 (1985-06-01), Yanagida
patent: 4680524 (1987-07-01), Do et al.
patent: 4710691 (1987-12-01), Bergstrom et al.
patent: 5334920 (1994-08-01), Ito et al.
Ricoh & Company, Ltd.
Wysocki Jonathan
LandOfFree
Image reading device for scanning a document in first and second does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image reading device for scanning a document in first and second, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading device for scanning a document in first and second will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-205660