A printer and method of operating same which receives print jobs from a host computer encoded in any one of several printer control languages. The printer has the capability of interpreting print jobs in each printer control language. The printer samples a portion of each print job and, using a resident algorithm and data sets obtained by statistical techniques, analyzes the sampled portion of the print job to identify the printer control language in which the print job is encoded.
A logging module is disclosed. A communications device can include, and so be made secure through the use of, the logging module. The logging module is configured to communicate information regarding a change to a configuration of a subsystem of the communications device.
A printer buffer unit is connectable to one or a plurality of host computers and one or a plurality of printers. The printer buffer unit has a unit for detecting a break of print job data sent from a host computer, and a unit for adding a job offset command at the time of the break in sending the print job data to a printer.
An automatic language recognition method which comprises selecting a block of data from the received data and searching said block for elements that are "for" or "against" the presence of a particular language. Recognition is performed by searching for a plurality of known languages in a predetermined order, and by proceeding, for each language, with a search for at least one element characteristic of that language in the data block. It is possible to begin by searching for languages having a special signature, then for languages having special synchronization characters or keywords, and then for languages using mnemonics made up of a determined number of significant characters. The method is used for automatically selecting an interpreter module for decoding the received data, in particular the data received by a plotter. The method is also applicable to detecting a fault, a banner, or a switch of language in the received data.
The present invention is a method of printing in an accountable manner with error detection, by receiving a document in a human-readable printer command language; generating a table of contents that lists each data file in the document and the pages on which they would appear; selecting a data file to print; determining on which pages the selected data file would appear; converting the data records and the control records to machine-readable format; checking each converted sequence number and check-sum number the same as received and reporting any discrepancy and stopping if an error occurred; sending the converted data files to the printer if no discrepancy exists; comparing the number of pages sent to the printer to the number of pages printed, reporting any discrepancy, and stopping if any discrepancy exists; comparing the sequence number and sum-check number for each data record and each control record sent to the printer to the same as received, reporting any discrepancy, and stopping if any discrepancy exists; returning to the step of selecting a data file to print if it is desired to print another data file; and commanding the printer to print a report of what was printed.
According to an image processing apparatus and a method therefor, a discrimination program for discriminating whether a translation program for translating a printer language can translate an externally input printer language is input and stored. It is discriminated whether the translation program can translate the externally input printer language, using the stored discrimination program.
