Data processing apparatus, method for controlling data processing apparatus, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorDaisuke Matsunaga
Life of this patent
Estimating the term…
Abstract
A data processing apparatus includes a first memory control unit and a second memory control unit. The first memory control unit performs data transfer via an interface of a first bus form. The second memory control unit performs data transfer between a memory device connected via an interface of a second bus form. The first memory control unit and the second memory control unit are connected by a local bus. The memory control unit is provided in the local bus to control, via a predetermined buffer, a write access or a read access to the first memory control unit from the second memory control unit and control, via the predetermined buffer, a read access or a write access to the second memory control unit from the first memory control unit.
Claims9
A data processing apparatus, comprising:
- a first memory control unit configured to perform data transfer via an interface of a first bus form;
- and
- a second memory control unit configured to perform data transfer between a memory device connected via an interface of a second bus form,
- wherein the first memory control unit and the second memory control unit are connected by a local bus, and a memory control unit is provided in the local bus to control, via a predetermined buffer, a write access or a read access to the first memory control unit from the second memory control unit and control, via the predetermined buffer, a read access or a write access to the second memory control unit from the first memory control unit.
A method to control a data processing apparatus having a first memory control unit configured to perform data transfer via an interface of a first bus for and a second memory control unit configured to perform data transfer between a memory device connected via an interface of a second bus form, wherein the first memory control unit and the second memory control unit are connected by a local bus, the method comprising:
- controlling, via a memory control unit provided in the local bus and via a predetermined buffer, a write access or a read access to the first memory control unit from the second memory control unit;
- and
- controlling, via the memory control unit and via the predetermined buffer, a read access or a write access to the second memory control unit from the first memory control unit via the predetermined buffer.
A non-transitory computer-readable storage medium storing a program to cause a computer to perform a method to control a data processing apparatus having a first memory control unit configured to perform data transfer via an interface of a first bus form and a second memory control unit configured to perform data transfer between a memory device connected via an interface of a second bus form, wherein the first memory control unit and the second memory control unit are connected by a local bus, the method comprising:
- controlling, via a memory control unit provided in the local bus and via a predetermined buffer, a write access or a read access to the first memory control unit from the second memory control unit;
- and
- controlling, via the memory control unit and via the predetermined buffer, a read access or a write access to the second memory control unit from the first memory control unit via a predetermined buffer.
Dependencies are inferred from the claim text.