Taligent, Inc.

Apple Inc.

Xerox Corporation

Object Technology Licensing Corporation

L Bayles Holt

Ryoji Watanabe

Mahinda K De Silva

Thomas M Holladay

Jayendra Natubhai Patel

Mark Peek

Mahinda K deSilva

Jayendra N Patel

An object-oriented printing system includes objects that provide query, data transfer, and control methods. The inventive object-oriented printing system communicates with the remainder of the operating system by means of a standard interface such as a grafport and printer drivers are provided for each printer type within the operating system. Thus, an application not only need not worry about the particular printer/computer combination with which it is to operate, but also need not have a built in document formatting capability. The printing system includes objects that provide queries for device identification, optimized imaging, and printer status. Other objects are also provided for data transfer to bracket connections prior to sending and receiving information. Still other objects are provided for cancelling a print job, pausing a job, and clearing out a job. Finally, an object is also provided for supporting multiple streams of communication to an imaging task.

Object oriented printing system

An object-oriented printing system includes objects that provide query, data transfer, and control methods. The inventive object-oriented printing system communicates with the remainder of the operating system by means of a standard interface such as a grafport and printer drivers are provided for each printer type within the operating system. Thus, an application not only need not worry about the particular printer/computer combination with which it is to operate, but also need not have a built in document formatting capability. The printing system includes objects that provide queries for device identification, optimized imaging, and printer status. Other objects are also provided for data transfer to bracket connections prior to sending and receiving information. Still other objects are provided for canceling a print job, pausing a job, and clearing out a job. Finally, an object is also provided for supporting multiple streams of communication to an imaging task.

From a matrix of elements representing an image, coordinates of each end of lines in a parallel array are generated. The lines in the array join adjacent elements in the same binary state. The coordinates are communicated to a vector graphics device which draws the array of parallel lines to form a graphic representation of the image.

Method for vector plotting a bitmap with a reduced number of lines

An object-oriented printing interface includes document grouping or folio objects which, once created, provide complete and flexible printing capability that is transparent to an application program. The printing interface objects include objects that are capable of automatically paginating printable information in several different formats, providing page composition including the addition of margins, footnotes, page numbers and registration marks, n-up printing and page imposition and combining text material with graphic material.

Operating system with object-oriented printing interface

A method for digitally printing a digital image by reference to a succession of code words representing blocks of pixels of the original image. The image is originally subdivided into uniform size blocks of pixels. Each of the blocks of pixels is given a unique identifier unless it is identical to any of the previously scanned blocks. Identical groups are given the same identifier. In printing the digital image, the identifiers are scanned in sequence and the corresponding pixel blocks are successively stored in buffer memories for modulating the printer.

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San Jose, CA, United States of America

L Bayles Holt