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Apparatus and method for determining the page description language in which a print job is written

  • US 5,402,527 A
  • Filed: 04/23/1993
  • Issued: 03/28/1995
  • Est. Priority Date: 04/23/1993
  • Status: Expired due to Term
First Claim
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1. A printing system for producing prints from a print job written in one of a plurality of page description languages with the print job assuming a form of a print job stream, comprising:

  • a plurality of page description language analyzing units for sampling the print job stream, each analyzing unit outputting an information signal which provides information regarding the print job stream; and

    a filter, receiving each of the information signals, for processing the information signals and outputting a filtered signal which indicates the page description language in which the print job is written, said filter including a set of rules for arbitrating conjunctively the information signals, the set of rules being dynamically configurable by a printing system user, said filter having a control line and said configuring including transmitting a control signal from the printing system user to said filter and, in response to receiving the control signal across the control line, said filter changing the set of rules so that said filter is provided with enhanced predictive capability.

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