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USB communication equipment and method using mobile communication terminal earphone jack

A mobile communication terminal and headphone jack technology, which is applied in branch office equipment, telephone communication, telephone structure, etc., and can solve problems such as slow data transmission speed

Inactive Publication Date: 2004-05-12
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, a common external camera is a low-speed camera performing low-speed communication (such as RS-232 or serial communication, etc.), so the data transmission speed between the mobile communication terminal and the external camera is very slow in the prior art.

Method used

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  • USB communication equipment and method using mobile communication terminal earphone jack
  • USB communication equipment and method using mobile communication terminal earphone jack
  • USB communication equipment and method using mobile communication terminal earphone jack

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Embodiment Construction

[0052] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0053] first, Figure 4 The structure of a USB communication device using an earphone jack of a mobile communication terminal according to the present invention is shown.

[0054] Such as Figure 4 As shown, the USB communication device using the earphone jack of a mobile communication terminal according to the present invention includes: a mobile communication terminal 600, which is used to distinguish the type of external equipment connected to the earphone jack 400, and when the external equipment is a USB device, perform USB slave machine function, and perform a mono input function and a stereo output function when the external device is a headphone microphone chain; and a USB device for performing a USB by operating it as a USB host when it is connected to the headphone jack 400 Communication with mobile communication terminals.

[0055] H...

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Abstract

A USB communication device using an earphone jack of a mobile communication terminal and a method for judging the type of the external device when the external device is connected to the earphone jack of the mobile communication terminal. When the external device is a USB external camera, the mobile communication terminal receives the converted image from the USB external camera through the earphone jack; The headphone earpiece of the headphone microphone chain, and receive mono sound from the microphone of the headphone microphone chain through the microphone signal line of the headphone jack. Therefore, in the present invention, the functions of USB communication between the mobile communication terminal and the external device, stereo output and monaural output can be selectively performed according to the kind of the external device connected to the earphone jack.

Description

technical field [0001] The present invention relates to a mobile communication terminal and an external USB (Universal Serial Bus) communication device connected to it, in particular to a USB communication device using an earphone jack of a mobile communication terminal and a method thereof. Background technique [0002] With the development of functions of mobile communication terminals, functions such as a camera function and a multimedia reproduction function are provided to mobile communication terminals in addition to simple wireless communication functions. [0003] With the improvement of the display unit of the mobile communication terminal and the realization of high-speed communication, the application range of the multimedia function has been gradually increased, the multimedia function has been used commercially, and the final mobile communication terminal can be regarded as a mobile entertainment system. [0004] A photographing function and a multimedia reprodu...

Claims

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Application Information

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IPC IPC(8): H04M1/02H04M1/72409H04M11/00
Inventor 李相学
Owner LG ELECTRONICS INC
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