公开(公告)号：FR2376470A1

公开(公告)日：1978-07-28

申请号：FR7735666

申请日：1977-11-21

Applicant: IBM

Inventor： PEREIRA LAWRENCE W

IPC: G06F3/12 ,  G06K15/00 ,  G06K15/06 ,  G06K15/10 ,  G06K15/12 ,  G06T3/60

Abstract: IMAGE DATA REMAPPING SYSTEM A system remaps image data generated by successive sweeps of the image by a single transducer element into a format for use by a print head assembly which requires the simultaneous application of plural modulating signals to a plurality of print elements thereon to effect printing of the image. Horizontal strips of the image data corresponding to the height of the arrangement of print elements within the head assembly are successively transferred from a page buffer which stores the image to a horizontal strip buffer, from which successive columns of each strip along the length thereof are transferred through a rotator for rearrangement into new groups of data oriented at right angles relative to the prior arrangement thereof for storage in a vertical strip buffer. From the vertical strip buffer the new groups of data are applied through deserializers to modulate the plural print elements in the form of ink jet nozzle as the head assembly undergoes successive sweeps across a printable medium.

公开(公告)号：CA1217869A

公开(公告)日：1987-02-10

申请号：CA469464

申请日：1984-12-06

Applicant: IBM

Inventor： FISK DALE E ,  PEREIRA LAWRENCE W ,  RADIN GEORGE

IPC: G06F7/00 ,  F02B75/02 ,  G06F9/30 ,  G06F9/312 ,  G06F9/38 ,  G06F13/36

Abstract: INTERNAL BUS ARCHITECTURE FOR A PRIMITIVE INSTRUCTION SET MACHINE An internal bus mechanism for implementation in a computing system characterized by having a limited number of primitive general function instructions provided for controlling all system operations. The architecture of the internal bus mechanism defines a bus instruction format which specifies the bus unit being requested, the operation being requested, and sufficient data to specify the operands necessary to perform the requested operations. Two basic classes of instructions are provided, one wherein the CPU waits until a requested operation is performed and the other wherein the CPU issues an instruction to a bus unit and proceeds to execute further instructions in parallel with the operation of the bus unit. If desired, various units of the memory hierarchy may be designated and operated as bus units. To further the philosophy of a primitive instruction set, the present architecture utilizes a small number of bus unit instructions to replace a large number of additional system instructions which would be necessary if the bus units were architected as part of the CPU itself. Hardware design and system protocols are disclosed and described for implementing these architectural objectives.

公开(公告)号：CA1187194A

公开(公告)日：1985-05-14

申请号：CA430697

申请日：1983-06-17

Applicant: IBM

Inventor： CUMMINGS KENNETH D ,  GOULD DONALD R ,  GRAY FORREST C ,  PEREIRA LAWRENCE W

IPC: G06K15/00 ,  B41J2/485 ,  G06F3/12 ,  G06F17/21 ,  G06K15/02 ,  G09G5/24

Abstract: CHARACTER GENERATOR FOR RASTER PRINTER A character generator for a raster printer which prints in the page mode. Input format data is generated in response to the input print data which defines for each pattern the position of the pattern on the page, the size of the pattern and the location of the pattern in the raster pattern storage. The format data is accessed for all patterns beginning within a predetermined plurality of scan lines and raster data is accessed in response to the format data to store in an output buffer the raster pattern data in the sequence, size and position defined by the format data. The raster pattern data can then be accessed to control a printer to print on a print medium a pattern defined by the input print data.

公开(公告)号：CA1084848A

公开(公告)日：1980-09-02

申请号：CA292045

申请日：1977-11-30

Applicant: IBM

Inventor： PEREIRA LAWRENCE W

IPC: G06F3/12 ,  G06K15/00 ,  G06K15/06 ,  G06K15/10 ,  G06K15/12 ,  G06T3/60 ,  H02B1/02

Abstract: IMAGE DATA REMAPPING SYSTEM A system remaps image data generated by successive sweeps of the image by a single transducer element into a format for use by a print head assembly which requires the simultaneous application of plural modulating signals to a plurality of print elements thereon to effect printing of the image. Horizontal strips of the image data corresponding to the height of the arrangement of print elements within the head assembly are successively transferred from a page buffer which stores the image to a horizontal strip buffer, from which successive columns of each strip along the length thereof are transferred through a rotator for rearrangement into new groups of data oriented at right angles relative to the prior arrangement thereof for storage in a vertical strip buffer. From the vertical strip buffer the new groups of data are applied through deserializers to modulate the plural print elements in the form of ink jet nozzle as the head assembly undergoes successive sweeps across a printable medium.