Image forming apparatus

A technology for image and configuration registers, applied in image communication, instrumentation, error detection/correction, etc., can solve problems such as the absence of automatic recovery components
CN103227876AInactive Publication Date: 2013-07-31SHARP KK
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHARP KK
Publication Date
2013-07-31
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An image forming apparatus has a plurality of device modules for executing predetermined functions; and a control module for controlling operation of the device modules. The control module comprises an initialization section for establishing a link; a master data transfer section for transferring data to a device module; and a link checking section for checking the state of the link. When a request for data transfer to a first device module out of the plurality of device modules is made, the link checking section checks the state of the link between the control module and the first device module. When the state of the link checked is determined to be abnormal, the initialization section establishes the link between the control module and the first device module, and then the master data transfer section transfers the data requested to be transferred to the first device module.
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Description

technical field

[0001] The present invention relates to an image forming apparatus. More specifically, the present invention relates to an image forming apparatus having a function of restoring a link established between modules for realizing functions of the image forming apparatus when an error occurs in the link. Background technique

[0002] In image forming devices such as digital copiers and digital multifunction printers (MFPs), parallel interfaces represented by PCI (Peripheral Component Interconnect) have been used to connect devices such as CPUs, image processing modules, and Components of memory devices.

[0003] However, the parallel interface has some problems such as race conditions and clock skew, and its transmission rate is insufficient for high-speed and high-quality image forming apparatuses. Therefore, recently, a PCI Express interface (PCI Express interface, hereinafter referred to as PCIe), which is a high-speed serial interface, has been proposed for...

Claims

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