Electronic device, communication control method of electronic device, and information terminal device

Abstract

An electronic device includes a connection unit that enables a USB connection to a smartphone, a normal communication mode in which communication is performed by using a device class prepared in advance in the smartphone, a request unit that makes a request for switching to a unique communication mode, a search unit that searches for a device class usable in the normal communication mode after the request for switching to the unique communication mode has been made, a determination unit that determines, on the basis of a search result, whether or not a disadvantageous change has occurred in the normal communication mode, and a reset unit that resets the USB connection when it is determined that a disadvantageous change has occurred.

Description

RELATED APPLICATION[0001]The present application claims priority to Japanese Patent Application Number 2012-234548, filed Oct. 24, 2012, the entirety of which is hereby incorporated by reference.BACKGROUND[0002]1. Field of the Invention[0003]The present invention relates to an electronic device, an information terminal device, and an electronic system utilizing them, and more particularly to communication control between the information terminal device and the electronic device when the information terminal device is connected.[0004]2. Description of the Related Art[0005]In recent years, with the ever widening use of multi-function mobile phones typified by smartphones or the like, the frequency of use of smartphones in vehicles has been increasing. A smartphone has communication functions, for example, a third generation (3G) line, a Universal Serial Bus (USB) connection, and wireless data communications, such as WiFi and Bluetooth (registered trademark). The use of these functions...

AI Technical Summary

Benefits of technology

The patent aims to solve the problem of disadvantageous changes when using different communication modes on a device. It determines if there is a change and can reset the USB connection to allow for the use of a different mode. This enables both modes to be used simultaneously and avoids the issue of switching to a new mode causing discomfort.

Problems solved by technology

However, because this unique communication mode is not a function implemented in a device class / class driver of an individual terminal but a special communication mode prepared on the OS side, a case may arise where a USB interface (device class) originally included by the terminal may not be able to be used.

However, when switching to the unique communication mode is performed, the mass storage class and the communication device class (NCM) disappear and are changed to the Android open accessory class, so that playing of the music file and the mirror link become disabled.

Thus, a disadvantageous change due to switching to the second communication mode may be dealt with.

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