Image processing apparatus and image processing method

Abstract

An image processing apparatus includes a stream buffer that stores therein data that is to be subjected to image processing; a first counting unit that measures a volume of data that is input into the stream buffer. An analyzing unit reads the data from the stream buffer and analyses read data; and a second counting unit measures a volume of data that is output from the stream buffer to the analyzing unit. An error identifying unit identifies, when error occurs in the analyzing unit when analyzing the data, a part of the data where an error has occurred based on the volumes of data measured by the first counting unit and the second counting unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of an image processing apparatus according to an embodiment of the present invention;

FIG. 2 is a flowchart of the operations performed by the image processing apparatus;

FIG. 3 is an example of PDL data;

FIG. 4A, FIG. 4B, and FIG. 4C explain a process of identifying a part where an error has occurred; and

FIG. 5 is a hardware configuration of the image processing apparatus.

Claims

1. An image processing apparatus comprising: a stream buffer that stores therein data that is to be subjected to image processing;a first counting unit that measures a volume of data that is input into the stream buffer;an analyzing unit that reads the data from the stream buffer and analyses read data;a second counting unit that measures a volume of data that is output from the stream buffer to the analyzing unit; andan error identifying unit that identifies, when error occurs in the analyzing unit when analyzing the data, a part of the data where an error has occurred based on the volumes of data measured by the first counting unit and the second counting unit.

2. The image processing apparatus according to claim 1, wherein the first counting unit and the second counting unit are increment counters.

3. The image processing apparatus according to claim 1, wherein the first counting unit is an increment counter and the second counting unit is a decrement counter that decrements the volume of data counted by the first counting unit.

4. The image processing apparatus according to claim 1, further comprising a host buffer that sends data to the stream buffer, wherein the first counting unit that measures a volume of data that is input into the stream buffer from the host buffer.

5. The image processing apparatus according to claim 4, wherein volume of data sent from the host buffer to the stream buffer is variable.

6. An image processing method comprising: storing data that is to be subjected to image processing in a stream buffer;first counting including measuring a volume of data that is input into the stream buffer;reading the data from the stream buffer and analyzing read data;second counting including measuring a volume of data that is output from the stream buffer at the reading; andidentifying, when error occurs at the reading when analyzing the data, a part of the data where an error has occurred based on the volumes of data measured at the first counting and the second counting.