Electronic device system, electronic device, and storage medium

Abstract

An electronic device system, an electronic device and a storage medium are provided that prevent processing by a control program stored in a non-certified storage medium. An SDIO device 102 stores a control program 51a, and outputs the control program 51a from an SD pin unit 40. To an extended pin unit 41, a connection check signal from an electronic device 101 is inputted. A response signal from a response circuit unit 53 is outputted from the extended pin unit 41 to the electronic device 101. An input-output IF 14 obtains the response signal from the extended pin unit 41. A control unit 1 determines whether the SDIO device 102 is connected based on the obtained response signal, and when it is connected, executes the control program 51a by a processing unit 10.

Description

technical field [0001] The present invention relates to an electronic device system including a storage medium and an electronic device that is detachably connected to the storage medium and executes processing by a program read from the storage medium, the electronic device, and the storage medium. Background technique [0002] Electronic devices such as notebook PCs (personal computers) and tablet-type portable terminals often have connection interfaces for connecting to external devices and performing data transfer. For example, the electronic device reads and utilizes data such as music and video stored in a device connected to a connection interface, and further activates the electronic device from a program installed in the connected device. An example of a connection interface provided in an electronic device is an SD (Secure Digital) interface, and an example of a connected device is an SD memory card provided with an SD interface. [0003] Japanese Unexamined Paten...

AI Technical Summary

Problems solved by technology

For example, when the circuit boards are shared as in the image forming apparatus described above, there is a problem that a control program that enables high-speed printing for a higher-level model is illegally used for a lower-level model with a lower printing speed.

In an image forming apparatus, different developing toners and the like are used in accordance with the printing performance in the lower-level model and the upper-level model in order to optimize the hardware. Once the lower-level model is used for the higher-level model In high-speed printing, the developing toner scatter and the image quality deteriorates, which in turn leads to performance degradation and causes failures.

Images