公开(公告)号：US3913089A

公开(公告)日：1975-10-14

申请号：US38325773

申请日：1973-07-27

Applicant: BUNKER RAMO

Inventor： ALBRECHT FRANCIS E

IPC: G09G1/04 ,  G09G1/14 ,  G06F3/14

CPC classification number: G09G1/14 ,  G09G1/04

Abstract: This invention relates to a method and apparatus for causing the display on a display device such as a cathode ray tube (CRT) to travel or advance in fractional stroke increments. The circuit includes a first counter, each unit increment of which corresponds to a predetermined fractional stroke increment of the display, and a second counter, each unit increment of which corresponds to a full stroke increment of the display, the second counter being connected to be incremented in response to an overflow from the first counter. The circuit also includes elements for determining and indicating the number of predetermined fractional stroke increments which the display is to be incremented and for incrementing the first counter by the indicated number. The counts in the first and second counters are utilized for controlling both the stroke and bit of the stroke of the display at which display of the first of successive characters applied for display begins.