BIDIRECTIONAL PARALLEL PRINTER INTERFACE

    公开(公告)号:JPH07168678A

    公开(公告)日:1995-07-04

    申请号:JP5939592

    申请日:1992-02-13

    Applicant: IBM

    Abstract: PURPOSE: To make an operator confirm the state of a printer without going to the place of the printer by making a data processor report whether information transmitted to the printer is data signals or state signals. CONSTITUTION: A computer 40 which is the data processor is connected to the printer 41 by a cable 42. When the power of the computer 40 and the printer 41 is turned ON, it is assumed that they are operated in a mode where the printer 41 is placed in a single direction. In order to activate a bidirectional mode so as to make the printer 41 able to transmit and receive the information, the computer 41 sets-INIT to low and the printer 41 sets +BUSY to high in response to it. When the printer 41 is prepared to receive a state command, +BUSY is turned low. In the case that the printer 41 does not set +BUSY, it is assumed that the computer 40 can not respond whether the printer 41 is unidiretional or bidirectional due to the fault of a hardware.

    HYPHEN CHARACTERIZATION FOR A TYPEWRITER

    公开(公告)号:AU530799B2

    公开(公告)日:1983-07-28

    申请号:AU6170780

    申请日:1980-08-25

    Applicant: IBM

    Abstract: In a text processing system including a keyboard (8), a printing mechanism (6), a controlling logic device (2) and a storage (10), the hyphen code that is stored in storage (10) in response to depression of a hyphen key on keyboard (8) is conditioned on printing position and on the codes adjacent to the hyphen code in a text string. If a hyphen is keyed after the start of the return zone, is preceded by a graphic representative code and is followed by a keyed carrier return, a distinctive hyphen code representative of a syllable hyphen is recorded. Otherwise, a regular hyphen is recorded unless the hyphen key has been depressed in conjunction with a condition key, in which case a code representative of a required non-breaking hyphen is recorded. As a result of so controlling the recorded hyphen codes at the time of keyboarding, the operator's intentions for hyphenation may be achieved with little departure from normal keyboarding routine.

    PAPER INSERTION APPARATUS
    3.
    发明专利

    公开(公告)号:CA1126196A

    公开(公告)日:1982-06-22

    申请号:CA331677

    申请日:1979-07-12

    Applicant: IBM

    Inventor: BUCHANAN JAMES C

    Abstract: IMPROVEMENT FOR PAPER INSERTION APPARATUS Improved apparatus for effecting semi-automatic insertion of paper into a typewriter concentrates operator interactions, (1) to condition the typewriter for a distance input selection and (2) to trigger indexing for paper insertion, so as to merely involve positioning of the paper bail. A detection of the paper bail at a predefined position withdrawn from the paper feed path conditions the typewriter to interpret keyboard actuations - preferably of the number keys - as representing desired first line distances e.g., the "2" key represents a first line one inch from the top of the sheet. And, in a presently preferred implementation, the number keys represent a fixed distance increment (three lines or approximately one half inch) multiplied by the key number. The represented distance, including any feed path distance to move the top of the sheet from the entrance point to the print line, is stored in memory and a transfer of the paper bail from the detected position then serves to trigger paper indexing that corresponds to the stored distance. LE9-78-004

    4.
    发明专利
    未知

    公开(公告)号:DE69229079D1

    公开(公告)日:1999-06-10

    申请号:DE69229079

    申请日:1992-02-26

    Applicant: IBM

    Abstract: A parallel interface connects a data processor and a printer so that each may transmit information to the other or receive information from the other. The transmitted information from the data processor can be data or status signals. The data or status signals are transmitted over the same eight information lines between the data processor and the printer with a predetermined signal being sent over another line from the data processor to the printer prior to transmission over the eight lines to identify whether the transmitted information is data or status signals. The printer sends status signals to the data processor over the same eight information lines after sending a predetermined signal to the data processor over a further line that it is going to transmit.

    HYPHEN CHARACTERIZATION APPARATUS FOR A TYPEWRITER

    公开(公告)号:CA1147690A

    公开(公告)日:1983-06-07

    申请号:CA358434

    申请日:1980-08-18

    Applicant: IBM

    Abstract: HYPHEN CHARACTERIZATION APPARATUS FOR A TYPEWRITER In a typewriter having text storage capability, the hyphen code that is stored in response to depression of a hyphen key is conditioned on printing position and on the codes adjacent to the hyphen code in a text string. If a hyphen is keyed after the start of the return zone, is preceded by a graphic representative code and is followed by a keyed carrier return, a distinctive hyphen code representative of a syllable hyphen is recorded. Otherwise a regular hyphen is recorded unless the hyphen key has been depressed in conjunction with a condition key (e.g. the CODE key), in which case a code representative of a required non-breaking hyphen is recorded. As a result of so controlling the recorded hyphen codes at the time of keyboarding, the operator's intentions for hyphenation may be achieved with little departure from normal keyboarding routine. LE9-79-014

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