DATA CONVERSION APPARATUS, RECORDING APPARATUS INCLUDING THE DATA CONVERSION APPARATUS, AND DATA CONVERSION METHOD

• US 20130057877A1
• Filed: 11/01/2012
• Published: 03/07/2013
• Est. Priority Date: 08/10/2007
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kondo, Mitsuru
• Granted Patent: US 9,225,870 B2
• Time in Patent Office: Days
• US Class Current: 358/1.2
• CPC Class Codes: G06K 15/1836 Rasterization
• CPC Class Codes: G06K 15/1852 involving combining data of different types
• CPC Class Codes: H04N 1/1911 Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths
• CPC Class Codes: H04N 2201/0082 Image hardcopy reproducer H04N2201/0091 - H04N2201/0094 take precedence

Abstract

A data conversion apparatus which converts data including a K pixel amount of bit data expressed as N bits/1 pixel, where N and K are plural, using conversion data of predetermined bits comprising: a holding unit configured to hold input data in K×N bits; an acquisition unit configured to acquire from the conversion data a number of bit patterns corresponding to a decimal value expressed by N bits among a conversion target to convert the input data held by the holding unit by N-bit units; a storage unit configured to store a pattern of N bits corresponding to a decimal value obtained from a bit pattern acquired by the acquisition unit in a bit position of the conversion target; and an updating unit configured to update the bit position of the conversion target each time the acquisition unit and the storage unit perform processing.

Claims

1. A data conversion apparatus which converts data including a K pixel amount of bit data expressed as N bits/1 pixel, where N and K are plural, using conversion data of predetermined bits comprising:

a holding unit configured to hold input data in K×

N bits;

an acquisition unit configured to acquire from the conversion data a number of bit patterns corresponding to a decimal value expressed by N bits among a conversion target to convert the input data held by the holding unit by N-bit units;

a storage unit configured to store a pattern of N bits corresponding to a decimal value obtained from a bit pattern acquired by the acquisition unit in a bit position of the conversion target; and

an updating unit configured to update the bit position of the conversion target each time the acquisition unit and the storage unit perform processing.