公开(公告)号：US3631394A

公开(公告)日：1971-12-28

申请号：US3631394D

申请日：1969-12-29

Applicant: IBM

Inventor： HARR JEROME DANFORTH ,  JOHNSON REYNOLD BENJAMIN ,  MARRS RALPH EUGENE ,  NASSIMBENE ERNIE GEORGE ,  PRICE GEORGE EDMUND

IPC: G06K9/20 ,  G06K7/14

CPC classification number: G06K9/20 ,  G06K9/28

Abstract: The recognition of human- and machine-readable characters of a family of type of which each character has no more than 12 segments is enhanced by a dual-disk segmented scanning arrangement. The generic-type family format is a medianly quartered parallelogram (MQP) embracing both slanted and upright printing, the latter being more specifically in the format of an orthogonally quartered rectangle (OQR). The scanning apparatus comprises an opto-mechanical subassembly for precisely scanning the short straight line segments in seriatim. A pair of rotating disks are arranged in overlapping relationship with apertures at the point of scan moving in directions substantially normal to each other, and both disks are moving past the scanning point in a direction opposite to the direction of one of the disks. The disks are usually rotating at the same speed and in opposite directions, and the apertures are arranged for scanning a multiplicity of characters for each full rotation of the disks. The apertures are divided into slits and slots with a slit in one disk cooperating with a slot in the other disk moving in the direction of an image line segment under consideration. An opto1electronic arrangement produces an electric representation in response to the presence and absence of a character line segment in the image. The opto-electronic arrangement comprises a photosensitive diode arranged to receive light from an area on a document. The highest and lowest light values are translated in a positive and negative peak storage circuit coupled to the photosensitive element. A threshold comparator circuit is individually coupled to the positive and negative peak storage circuits for delivering potential levels of values indicating marks or spaces.

公开(公告)号：US3572142A

公开(公告)日：1971-03-23

申请号：US3572142D

申请日：1969-06-02

Applicant: IBM

Inventor： JOHNSON REYNOLD BENJAMIN ,  MARRS RALPH EUGENE

IPC: B41J2/27 ,  B41J2/50 ,  B41J9/32 ,  B41J23/04 ,  F16H27/00

CPC classification number: B41J2/50 ,  B41J2/27 ,  B41J9/32 ,  B41J23/04 ,  Y10T74/1503

Abstract: A HIGHER MECHANICAL FORCE OVER UNIFORM DISTANCE IN RESPONSE TO MECHANICAL PRESSURES OR ELECTRIC PULSES OF VARYING AMPLITUDE OVER VARYING DURATION IS PROVIDED FOR ONE OR A MULTIPLE OF DEVICES TO BE SHIFTED BY A SIMPLE, COMPACT, INEXPENSIVE HIGH GAIN POWER TRANSMISSION SYSTEM. AN ELECTRIC MOTOR DRIVEN POWER ROLL HAS ONE OR MORE FLEXIBLE BANDS ARRANGED LOOSELY ABOUT THE PERIPHERY. ONE END OF EACH BAND IS COUPLED TO AN OPERATING LEVER, PREFERABLY IN THE FORM OF A HANGER COMPACTLY ENCIRCLING THE POWER ROLL AND THE BAND ON ONE SIDE. THE HANGER IS PIVOTED ON ONE SIDE OF THE ROLL AND CONNECTED TO ONE END OF THE BAND ON THE OTHER SIDE OF THE ROLL. THE DEVICE TO BE SHIFTED IS ATTACHED TO AN EXTENSION OF THE HANGER NEAR THE PIVOT. THE BAND IS CONNECTED TO THE LEVER ON THE OTHER SIDE OF THE ROLL BEYOND WHICH EXTENDS A DISENGAGING PORTION OF THE LEVER. A PRESSURE ROLLER IS ARRANGED ON AN ARM TO PRESS THE BAND INTO ENGAGEMENT WITH THE PERIPHERAL SURFACE OF THE ROLL. AN ARMATURE IS ARRANGED FOR MOVEMENT IN RESPONSE TO MANUAL PRESSURE ON A KEY OR ELECTRIC ENERGIZATION OF A MAGNET, OR THE LIKE. THE MOVEMENT OF THE ARMATURE IS EXERTED THROUGH A MECHANICAL LATCH TO CAUSE THE ARM CARRYING THE PRESSURE ROLLER TO PRESS THE BAND INTO FRICTIONAL CONTACT WITH THE MOVING POWER ROLL. THE BAND THEN PULLS THE LEVER IN A DIRECTION FOR SHIFTING THE DEVICE AS DESIRED AND OPENING THE MECHANICAL LATCH THROUGH ACTION OF THE DISENGAGING EXTENSION OF THE LEVER. THUS UNIFORM TRAVEL OF THE DEVICE TO BE SHIFTED OBTAINS FROM APPLIED FORCE WHICH IS NOT NECESSARILY UNIFORM AS TO TIME OR AMPLITUDE OR DISTANCE TRAVELED.