A method for upgrading dual-mode mobile phone via multiplexing serial port

A dual-mode mobile phone and serial port technology, which is applied in the field of upgrading dual-mode mobile phones through multiplexing serial ports, can solve the problems of cumbersome upgrade and maintenance process, increased workload, and increased capital investment in special equipment, so as to save costs and equipment. Invest, simplify the upgrade process, provide the effect of work efficiency

Inactive Publication Date: 2008-08-06
ZTE CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In the prior art, when the mobile phone needs to be upgraded and maintained, it is necessary to use special equipment to convert the working mode of the serial port. This method not only increases the workload of upgrading and maintaining, but also makes the process of upgrading and maintaining more cumbersome. Moreover, the use of special equipment also increases capital investment

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  • A method for upgrading dual-mode mobile phone via multiplexing serial port

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Embodiment Construction

[0017] When the dual-mode mobile phone is in normal use, the serial port is mainly used for the communication between the master and the slave module. When the dual-mode mobile phone needs to be upgraded, it is necessary to use the serial port to download the upgrade program from the PC to the dual-mode mobile phone. Switch the working mode. Generally, a plurality of idle pins are reserved on the serial port of a dual-mode mobile phone. Therefore, an idle pin can be selected, and the selected idle pin can be connected to a signal input port of the main chip. During communication, the dual-mode mobile phone and the PC are connected by a download line, and a pin is also set on the corresponding position of the download line and the idle pin selected above, and the pin is grounded or connected to a high level. When the download line is inserted into the serial port, through the contact of the two pins, the level of the signal input port of the main chip can be changed from the origin...

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Abstract

The invention discloses a method for upgrading a dual mode handset through a multiplexed serial port. The method comprises the following: Step a, a dual mode handset and a PC are connected by inserting one end of a download cable provided with a pin of the download cable into a serial port of the dual mode handset and connecting the other end to the PC; Step b, after the connection of the dual mode handset and the PC is finished, the pin of the download cable makes a state conversion to a signal input port connected with a serial port pin through the serial port pin corresponding to the position of the pin of the download cable; Step c, when the dual mode handset detects that the state of the signal input port changes, the state of the serial port is switched to a download mode, and the PC finishes the upgrading to the dual mode handset. The method of the invention saves the special equipment adopted when the working mode of the serial port is preset, saves the cost and the equipment investment, simplifies the upgrading process of the dual mode handset and provides the working efficiency.

Description

Technical field [0001] The invention relates to the field of communications, and in particular to a method for upgrading a dual-mode mobile phone through multiplexing serial ports. Background technique [0002] With the rapid development of communication technology, people have put forward more diversified and personalized requirements for mobile terminal products. Dual-mode mobile phones are more and more popular among mobile phone users due to their unique advantages. Various mobile phone manufacturers have also introduced a large number of dual-mode mobile phones of various combinations to the market, and have been universally recognized by mobile phone users. For example, dual-mode mobile phones that have appeared on the market are: Code Division Multiple Access (CDMA)-Global System for Mobile Communications (GSM) dual-mode, Time Division Synchronous Code Division Multiple Access (TD-SCDMA)-GSM dual-mode, GSM-GSM Dual mode, PHS-GSM dual mode, etc. [0003] A dual-mode mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32G06F9/445
Inventor 周永喜李启瑞张淑燕黄伟佘海波
Owner ZTE CORP
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