IMAGE FORMING APPARATUS AND RECORDING MEDIUM SUITABLE FOR IMAGE FORMING PROCESSING BASED ON PDL (PAGE DESCRIPTION LANGUAGE)

• US 20190138863A1
• Filed: 11/07/2018
• Published: 05/09/2019
• Est. Priority Date: 11/07/2017
• Status: Active Grant

• Current Assignee: KYOCERA Document Solutions, Inc. (Kyocera Corporation)
• Original Assignee: KYOCERA Document Solutions, Inc. (Kyocera Corporation)
• Inventors: SATO, Yasuhide
• Granted Patent: US 10,643,114 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 3/1213 at an intermediate node or at the final node
• CPC Class Codes: G06F 3/1247 by conversion to printer ready format
• CPC Class Codes: G06K 15/1811 including high level document description only
• CPC Class Codes: G06K 15/1813 Page description language recognition
• CPC Class Codes: G06K 15/1822 Analysing the received data before processing
• CPC Class Codes: G06K 15/1849 using an intermediate representation, e.g. a list of graphical primitives
• CPC Class Codes: G06K 15/1857 involving parallel processing in the same printing apparatus
• CPC Class Codes: G06K 15/408 Handling exceptions, e.g. faults computer driven error handling and recovery for a printer G06F3/1234

Abstract

Provided is an image forming apparatus for further speeding up an image forming process. A first rendering core of a rendering core module executes data analysis of an object of PDL format printing information. A second rendering core executes a speculative process for generating a Display List for an object. A third rendering core executes a rendering process for a printout or display output based on the Display List generated by the second rendering core. In addition, data analysis by the first rendering core and the speculative process by the second rendering core are executed in parallel processing. As a result, the second rendering core can execute the generation of a Display List by a speculative process even without receiving a rendering command from the first rendering core.

Claims

1. An image forming apparatus comprising:

a first rendering core for executing data analysis of an object of PDL format printing information;

a second rendering core for starting a speculative process for generating a Display List for the object before the data analysis is completed; and

a third rendering core for executing a rendering process based on the Display List generated by the second rendering core;

wherein

the data analysis by the first rendering core and the speculative process by the second rendering core are executed in parallel processing.

2. The image forming apparatus according to claim 1, wherein

the second rendering core, in the case where the speculative process for generating the Display List is failure, generates the Display List based on a result of the data analysis after the data analysis of the object by the first rendering core is completed.

3. The image forming apparatus according to claim 2, further comprising

a storage device for storing the Display List;

wherein

the second rendering core, in the case where the speculative process for generating the Display List is failure, causes the storage device to store the Display List up to the point immediately before the failure, checks data up to the point immediately before failure of the Display List stored in the storage device, and executes generation of the failed portion of the Display List.

4. A recording medium that is a non-transitory computer-readable recording medium for storing an image forming program executable on a computer of an image forming apparatus, and when the computer executes the image forming program:

a first rendering core executes data analysis of an object of PDL format printing information;

a second rendering core starts a speculative process for generating a Display List for the object before the data analysis is completed; and

a third rendering core executes a rendering process based on the Display List generated by the second rendering core;

wherein

the data analysis by the first rendering core and the speculative process by the second rendering core are executed in parallel processing.