Image processing apparatus and data transfer control method

摘要

According to an embodiment, an image processing apparatus has a monitoring unit, and an arbitration unit. The monitoring unit monitors a data amount in a first transfer buffer of a first image processing unit, and a data amount in a second transfer buffer of a second image processing unit. The arbitration unit arbitrates, so that when the data amount in the first transfer buffer becomes not less than a predetermined first threshold value, the number of times of data transfer from the first transfer buffer to a main memory is increased. Furthermore the arbitration unit arbitrates, so that when the data amount in the second transfer buffer becomes not more than a predetermined second threshold value, the number of times of data transfer from the main memory to the second transfer buffer is increased.

主权项

1. An image processing apparatus comprising:
a first image processing unit, including a first transfer buffer, to process image data read by an image reading unit; a main memory to store the image data transferred from the first transfer buffer; a second image processing unit, including a second transfer buffer, to process the image data read from the main memory and output processed data to an image output unit; a monitoring unit to monitor a data amount in the first transfer buffer, and a data amount in the second transfer buffer; and an arbitration unit to arbitrate data transfer, so that when the data amount in the first transfer buffer becomes not less than a predetermined first threshold value, a number of times of data transfer from the first transfer buffer to the main memory is increased, and when the data amount in the second transfer buffer becomes not more than a predetermined second threshold value, a number of times of data transfer from the main memory to the second transfer buffer is increased.