公开(公告)号：JP2006213058A

公开(公告)日：2006-08-17

申请号：JP2006019430

申请日：2006-01-27

Applicant: Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： ERNST LARRY M ,  WILSON JOHN C

IPC: B41J2/44 ,  B41J2/52

CPC classification number: G06K15/1223 ,  G06K15/128

Abstract: PROBLEM TO BE SOLVED: To provide a method, a system and a program for performing multiple-pel print quality enhancement (PQE) using amplitude modulation.
SOLUTION: A determination is made of an adjusted peak amplitude value of each pel of an image. At least two adjacent pels are then grouped together, and a determination is made of a peak amplitude value that will serves as a gray amplitude value for each pel in the pel group. Also determined is position information indicating the alignment of the peak amplitude within the combined area. The combined peak amplitude and position information are sent as input to an amplitude modulator operating at a speed equal to the video data rate of the printer divided by the number of pels for which the peak amplitude data is combined.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种使用幅度调制来执行多像素打印质量增强（PQE）的方法，系统和程序。 解决方案：确定图像的每个像素的调整的峰值振幅值。 然后将至少两个相邻像素组合在一起，并且确定将用作像素组中的每个像素的灰度幅度值的峰值振幅值。 还确定了指示组合区域内的峰值振幅的对准的位置信息。 组合的峰值幅度和位置信息作为输入发送到以等于打印机的视频数据速率除以峰值数据被组合的像素数量的速度操作的幅度调制器。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：CA1148238A

公开(公告)日：1983-06-14

申请号：CA364778

申请日：1980-11-17

Applicant: IBM

Inventor： PROMIS GEORGE G ,  SMITH GERALD L ,  WILSON JOHN C

IPC: G05B1/03 ,  G03B27/34 ,  G03B27/50 ,  G03G15/04 ,  G03G21/14 ,  H02P5/50 ,  G03G15/00 ,  G05D27/02

Abstract: MOTOR DRIVING SYSTEM A motor driving system which is particularly useful for driving scanning carriages in a continuously variable reducing electrophotographic copier. The motor driving system produces one of a number of different controlled and repeatable position acceleration and velocity profiles of the scanning carriage with respect to motion of the copier drum; a different position acceleration and velocity profile is produced for each reduction mode in a substantially continuous range of reduction modes. The motor driving arrangement includes a single control loop for driving a servo motor which provides the drive for the scanning carriage. A driving signal source produces a driving signal pulse train, each pulse representing a desired increment of motor travel, and a direction signal representative of the desired direction of travel. A tachometer is responsive to servo motor motion and produces an output signal representative of the direction of motion; the output signal includes a series of tachometer pulses, each pulse representing a given increment of servo motor movement. A logic circuit couples the output of the tachometer, the driving signal pulse train and the direction signal to an up/down counter which is stepped in one direction for each driving signal pulse, and which is also stepped in another or one direction, respectively, for each tachometer pulse which represents a direction which is the same as or different from the direction of the direction signal. The output of the up/down counter, converted to analog form, provides an input signal to drive the servo motor. In order to control the acceleration, velocity and position profiles of the scanning carriage, the driving signal source produces a train of output pulses whose repetition rate is precisely controlled in relation to the motion of the drum. The driving signal source includes a counter which produces a pulse output BO979-004 each time a predetermined count is reached, the counter is stepped at a rate related to the velocity of the drum, and the repetition rate of the output pulses is controlled by providing a sequence of quantities, from a storage matrix, to alter the modulus of the counter in a predetermined pattern. BO979-004 BO979-004