Abstract: A recording apparatus of the present invention includes a conveying means for conveying a recording medium, a conveying motor for driving the conveying means, a servo computing means for controlling the output directed to the conveying motor based on servo computing results obtained using software, a position detecting means for detecting a position of the recording medium by counting the number of encoder signal edges, a stop position setting register for setting a stop position of the recording medium, a position comparing means for comparing the position detected by the position detecting means with that set by the stop position setting register, and a conveying motor output switching means for selectively switching the output from the servo computing means and the output from an output for stop setting register.

Abstract: In a sheet member conveying apparatus having a roller for conveying a sheet member, a motor for driving the roller, a driving transmitter for transmitting a driving force of the motor to the roller, and a detector for detecting position and speed of the roller, control is executed by a step of detecting a periodic speed or torque change of the roller as a period profile, a step of judging a specific phase angle in the period profile as an origin, a step of correlating an offset phase angle having a specific offset from the origin with an optimal suspension phase angle on the period profile being a phase angle to suspend the roller, and a step of controlling the suspension phase angle on the period profile at which the roller suspends to become optimal, thereby suppressing an influence by torque and speed changes of the motor.

Abstract: A digital encoder control method of a digital control apparatus having a driving unit, a frequency signal generating unit for generating a pulse signal of a frequency according to a driving velocity of a driven member which is driven by the driving unit, an edge detecting unit for detecting a rising-up edge and a falling-down edge of the pulse signal, and a period data detecting unit for counting period data between edges detected by the edge detecting unit, wherein each time the edges are detected by the edge detecting unit, the period data between the same edges as the detected edges is outputted as control velocity data of the driving unit.

Abstract: A document processing apparatus uses a synonym dictionary to substitute words and phtrases in a document by other synonymous words and phrases. At this juncture, the frequency of use of the words in a document is counted, and the words which have more frequency of use are made the objects of the substitution. Also, the words having more frequency of use are removed from the substitutional candidates or its priority as the candidate is lowered. When counting the frequency of use, a word which constitutes an idiom is counted as an idiom. Also, a proper noun or other words and phrases which cannot be substituted are excluded from the object of counting.