Circuit for actuating electric motors, especially in an electron

Details Circuit for actuating electric motors, especially in an electron Circuit for actuating electric motors, especially in an electron

1985-11-05

1988-07-05

Wright, Jr., Ernest T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

400 70, 400320, 400568, 318594, B41J 122

Patent

active

047550708

ABSTRACT:
In an electronic typewriter having a printing device of the daisywheel type, the direct current electric motors which control the rotation of the character-carrying element, the movement of the carriage along the various printing positions and the rotation of the platen roller for line spacing are associated with corresponding transducers which detect the angular position thereof, and are actuated by a single integrated circuit connected to a microprocessor by an address and data bus (43). The microprocessor determines, for each of the motors, the angular amplitude of the rotary movement and the time required to cover each of the elementary angular distances, in accordance with a given speed law and addresses with data, including the said time, a plurality of circuit modules (B1, B2, B3) individual to the motors. The modules issue motor command signals (e.g. M11, M21, M31). Checking as between the actual speed and the desired or theoretical speed is effected by the modules of the integrated circuit using the timing signals (e.g. STA 1, STB 1) generated by the transducers connected to the motors. The modules send back interrupt signals (INT 1, INT 2, INT 3) which provide interrupt vectors (46) for the microprocessor, enabling the microprocessor to determine the new data to be sent to the modules.

REFERENCES:
patent: 3954163 (1976-05-01), Gabor
patent: 4030591 (1977-06-01), Martin et al.
patent: 4091911 (1978-05-01), Chang et al.
patent: 4118129 (1978-10-01), Grundherr
patent: 4226546 (1980-10-01), Hoffman
patent: 4236838 (1980-12-01), Guerrini
patent: 4307967 (1981-12-01), Araki et al.
patent: 4324499 (1982-04-01), Giacone
patent: 4349770 (1982-09-01), Ragen
patent: 4388010 (1983-06-01), Mott et al.
patent: 4405245 (1983-09-01), Fukushima
patent: 4440512 (1984-04-01), Forcier
patent: 4496835 (1985-01-01), Boella et al.
patent: 4605887 (1986-08-01), Boella et al.
patent: 4685887 (1987-08-01), Hanning
IBM Technical Disclosure Bulletin, "Electrical Connections in a Modularized Compact Copier", Dodge et al, vol. 25, No. 1, Jun. 1982, pp. 241-244.

Affiliated with

Also associated with

Rating

Circuit for actuating electric motors, especially in an electron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for actuating electric motors, especially in an electron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for actuating electric motors, especially in an electron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2329281