Method and circuit for interfacing card memory, asic embedded with the interface circuit, and image forming apparatus equipped with the asic
AssigneeRicoh Company, Ltd.
InventorsToshio Takahashi, Takumi Komori
Life of this patent
Estimating the term…
Abstract
An SD card interface, which is an interface for a detachable SD card requiring an access in sector units (a specific size), has a function to initialize an SD controller, a function to initialize an SD card, and a function to acquire status of the SD card.
Claims14
An interface circuit for a detachable card memory that requires an access in a specific size, comprising:
- a first initializing unit that initializes an interface controller that reads data from and writes data to the card memory;
- a second initializing unit that initializes the card memory;
- and
- a status acquiring unit that acquires status of the card memory.
An application specific integrated circuit including an image input/output function, an image processing function, and a plurality of application functions, with a configuration that each of the application functions uses a common memory, the application specific integrated circuit comprising:
- an interface circuit for a detachable card memory, which requires an access in a specific size, including a first initializing unit that initializes an interface controller that reads data from and writes data to the card memory, a second initializing unit that initializes the card memory, and a status acquiring unit that acquires status of the card memory.
An image forming apparatus equipped with an application specific integrated circuit, wherein
- the application specific integrated circuit includes an image input/output function, an image processing function, and a plurality of application functions, with a configuration that each of the application functions uses a common memory,
- the application specific integrated circuit comprises an interface circuit for a detachable card memory, which requires an access in a specific size, including a first initializing unit that initializes an interface controller that reads data from and writes data to the card memory, a second initializing unit that initializes the card memory, and a status acquiring unit that acquires status of the card memory, and
- the image forming apparatus has a configuration to download a computer program that is stored in the card memory.
A method of interfacing a detachable card memory that requires an access in a specific size, comprising:
- initializing an interface controller that reads data from and writes data to the card memory;
- initializing the card memory;
- and
- acquiring a status of the card memory.
Dependencies are inferred from the claim text.