| 摘要 |
The present invention, as evidenced from the drawings and descriptions provided herein, can be characterized in various, different, through unifying, ways. For example, from a methodologic point of view, the invention may be seen as providing a method which (1) procedurally engages a PDF data stream that is en route to printing, (2) determines whether, in that data stream, there is an image-only data file, and (3), if the answer to that determination is Yes, channels that data file into a novel PDF image-only pipeline for expedited pre-printing preparation (image decoding, resizing, rendering, etc.). From a systemic point of view, the invention proposes an interactive and cooperative assembly of structures, as illustrated in the drawing figures, which are constructed specifically to perform the methodologic functions just described. One will thus understand that an important expressive feature of the invention is its identification, and then dedicated processing-isolation, of image-only files in a PDF data stream. This special singulation, and focused attention-giving, to PDF image-only data squarely addresses the mentioned unsatisfactoriness of various, related, conventional PDF data-handling practices.
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