TWI477093B - Mobile communication terminal device and communication method using the same - Google Patents

Description

Mobile communication terminal device and communication method thereof

The invention relates to a communication terminal device, in particular to a mobile communication terminal device and a communication method thereof.

Mobile communication terminal devices, such as Mobile Phones, Personal Digital Assistants (PDAs), etc., generally have wireless communication functions. Within the coverage of the network system, the terminal device can realize two-way voice communication, transmission and reception of the short message through the cellular wireless communication system.

The currently widely used cellular wireless communication system standards include the Global System for Mobile Communication (GSM) standard, Code Division Multiple Access (CDMA) standard, Time Division Multiple Access (TDMA, Time Division Multiple Access). ) Standards, etc. Different communication standards stipulate different electromagnetic wave frequency ranges that can be transmitted or received. For example, the GSM standard specifies a transmission frequency range of 925-960 MHz and a receiving frequency range of 880-915 MHz.

However, in the case of wilderness exploration, maritime transportation, etc., the existing cellular wireless communication network system may not be covered by signals in some areas; when an earthquake occurs, the communication network may also be interrupted. At this time, the mobile communication terminal equipment cannot follow the existing cellular wireless communication standard, and transmits and receives electromagnetic waves to perform normal wireless communication. News.

In view of this, it is necessary to provide a mobile communication terminal device and a communication method thereof that can normally perform wireless communication when the cellular wireless communication system has no signal coverage or communication interruption.

A mobile communication terminal device includes a first antenna, a second antenna, a first transmitting/receiving module, a second transmitting/receiving module, and a baseband processing module. The first antenna is used for transmitting/receiving standard communication signals, and the first antenna is electrically connected to the first transmitting/receiving module and the baseband processing module. The second antenna is electrically connected to the second transmitting/receiving module and the baseband processing module, and the second antenna receives the analog signal signal transmitted from the outside to the mobile communication terminal device, and the baseband processing module receives the voice signal, text, and graphic information. Etc., and convert voice signals, text, graphic information, etc. into digital code signals. The second transmitting/receiving module converts the received digital code signal into an analog code signal, and the second antenna transmits the analog code signal.

A communication method for a mobile communication terminal device, comprising the steps of: detecting whether a standard communication signal is received; turning on a transmitting/receiving module for transmitting an analog code signal; detecting whether an input signal is received; transmitting an analog code signal.

Since the mobile communication terminal device uses the second antenna and the second transmitting/receiving module to transmit and receive the analog code signal, thereby solving the problem that the cellular wireless communication system has no signal coverage, the mobile communication device cannot perform normal communication. problem.

210‧‧‧first antenna

220‧‧‧second antenna

310‧‧‧ Morse code transmitting/receiving module

320‧‧‧Baseband processing module

330‧‧‧Wired Transmitting and Receiving Module

350‧‧‧ Output interface

360‧‧‧Input interface

230‧‧‧Voice Input Department

240‧‧‧Display Department

250‧‧‧Text Input Department

260‧‧‧Voice Input Department

1 is a schematic diagram of a mobile communication terminal device.

2 is a block diagram showing an internal circuit function of the mobile communication terminal device shown in FIG. 1.

3 is a functional block diagram of a baseband processing module of the mobile communication terminal device shown in FIG. 2.

4 is a block diagram showing another internal circuit function of the mobile communication terminal device shown in FIG. 1.

FIG. 5 is a functional block diagram of a baseband processing module of the mobile communication terminal device shown in FIG. 4.

6 is a flow chart of a communication method of a mobile communication terminal device.

FIG. 7 is a flow chart of a further method of detecting the input signal shown in FIG. 6.

The purpose, technical content, features, and effects achieved by the present invention will become more apparent from the detailed description of the appended claims.

Referring to FIG. 1 , a mobile communication terminal device 200 includes a body 280 , a first antenna 210 , a second antenna 220 , a voice output unit 230 , a display unit 240 , a text input unit 250 , and a voice disposed on the body 280 . The input unit 260 and the Morse buttons 202, 204 and the like. The inside of the body 280 also houses a plurality of circuit modules.

The first antenna 210 has a length matching the electromagnetic wave wavelength of a standard communication signal (electromagnetic wave signal, also called RF signal specified by GSM, CDMA, TDMA, etc.), and the first antenna 210 is used for transmitting and receiving an RF signal, for example, An electromagnetic wave signal having a characteristic frequency of 900 MHz. The length of the second antenna 220 and the power of the Morse code signal The magnetic wave wavelengths are matched and used to transmit and receive analog Morse code signals. The frequency of the analog Morse code signal is 1K~1000KHz. The voice output unit 230, such as a speaker or an earpiece, is used to output a voice signal. The display unit 240 is usually a liquid crystal display (LCD) for displaying text and graphic information. The character input unit 250 is generally a keyboard, and includes a plurality of buttons 252 for selecting an interface function table and inputting text information. The character input unit 250 can also be an input device such as a touch screen. The voice input unit 260 is configured to receive a voice signal.

Referring to FIG. 2, the internal circuit module of the mobile communication terminal device 200 mainly includes a Morse code transmitting/receiving module 310, a baseband processing module 320, a wireless transmitting/receiving module 330, an output interface 350, and an input interface 360. The baseband processing module 320 is electrically connected to the output interface 350 and the input interface 360 by the bus bar 340. The baseband processing module 320 is also electrically connected to the Morse code transmitting/receiving module 310 and the wireless transmitting/receiving module 330, respectively. The first antenna 210 is electrically connected to the wireless transmit/receive module 330. The second antenna 220 is electrically connected to the Morse code transmitting/receiving module 310.

When the multi-function mobile communication terminal 100 can receive the RF signal, the baseband processing module 320 sets the electrical connection terminal of the Morse code transmitting/receiving module 310 and the baseband processing module 320 according to the received RF signal. In the high resistance state, the Morse code transmitting/receiving module 310 is turned off. The cellular wireless communication system transmits/receives RF signals by the first antenna 210 and the wireless transmitting/receiving module 330 for normal voice communication, transmission and reception of short messages, and the like.

The first antenna 210 receives the RF signal transmitted by the wireless network (the receiving path is generally referred to as a "forward link"), and the wireless transmitting/receiving module 330 receives the inbound RF signal and performs the inbound RF signal. Filtering, amplifying, analog-to-digital conversion, etc., to obtain a digital baseband signal. The baseband processing module 320 is based on a specific wireless communication standard (GSM, CDMA, TDMA, etc.) demodulate, descramble, and decode the received digital baseband signal to obtain voice signals as well as text and graphic information. The voice signal is output to the voice output unit 230 via the output interface 350, and the character and graphic information are output to the display unit 240.

When the first antenna 210 transmits an outbound RF signal to a wireless network (this transmission path is commonly referred to as a "reverse link"), the input interface 360 can receive the voice signal input by the voice input unit 260, and can also receive the text. The input unit 250 inputs the text and graphic information, and then transmits the voice signal, the text, and the graphic information to the baseband processing module 320. The baseband processing module 320 encodes, scrambles, and modulates voice signals, text, and graphics information into digital baseband signals according to a particular wireless communication standard (GSM, CDMA, TDMA, etc.). The wireless transmit/receive module 330 receives the digital baseband signal, performs digital-to-analog conversion, filtering, and amplification to generate an outbound RF signal. The outbound RF signal is transmitted by antenna 210 to a target device, such as a base station.

When the multi-function mobile communication terminal 100 cannot receive the RF signal due to the no-signal coverage of the cellular wireless communication system, the baseband processing module 320 enables the electrical connection terminal of the Morse code transmitting/receiving module 310 and the baseband processing module 320. The Morse code transmitting/receiving module 310 is turned on when the input signal can be input normally. The baseband processing module 320 converts the voice signal, text, graphic information, etc. input by the user into a digital Morse code signal according to the standard international Morse code table, and the Morse code transmitting/receiving module 310 pairs the digital The semaphore signal is digital-to-analog converted, modulated, amplified, etc., and the analog Morse code signal is transmitted to the outside world.

The standard international Morse code code table is as follows:

The above table uses a combination of the two symbols "●" and "-" to indicate different characters. The more commonly used characters are represented by shorter symbols to save the amount of data transferred. “●” is a basic signal unit and “-” is the signal length of three “●”. The interval between letters or numbers is the length of two "●", and the interval between words is the length of seven "●".

1. The user is not familiar with the international Morse code table. The user can input a specific voice signal through the voice input unit 260, or input specific text information through the text input unit 250.

Referring to FIG. 3, the baseband processing module 320 mainly includes a voice converting unit 322, a text converting unit 324, and a Morse code converting unit 326. When the user inputs the analog voice signal from the voice input unit 260, the voice converting unit 322 converts the analog voice signal into a digital voice signal, and transmits the digital voice signal to the Morse code conversion unit 326. When the user inputs text information from the text input unit 250, the text conversion unit 324 converts the text information into a digital text signal and transmits it to the Morse code conversion unit 326. The Morse code conversion unit 326 receives the digital voice signal, and then according to Morse code table converts digital voice signals into digital Morse code signals. When the Morse code conversion unit 326 receives the digital text signal, it converts the digital text signal into a digital Morse code signal according to the Morse code table.

2. The user is familiar with the international Morse code table. Referring to Figures 4 and 5, the user directly encodes information by Morse buttons 202 and 204, wherein button 202 represents a "●" signal and button 204 represents a "-" signal. For example, the "SOS" distress signal, the code corresponding to the distress signal is "●●●---●●●". The digital Morse code signal encoded by the buttons 202, 204 is input to the input interface 360 and transmitted to the Morse code conversion unit 326 via the bus 340.

Referring to FIG. 2 and FIG. 4 together, the digital Morse code signals input in the above two cases are converted by the Morse code transmitting/receiving module 310 to obtain an analog Morse code signal, and the next day is borrowed. Line 220 emits the analog Morse code signal outward. The Morse code transmitting/receiving module 310 mainly includes a transmitting/receiving switching unit 312, a receiving amplifying unit 313, a transmitting amplifying unit 315, a receiving converting unit 314, a transmitting converting unit 316, a local crystal oscillator 318, and the like. The transmitting/receiving switching unit 312 is electrically connected to the second antenna 220, the receiving amplifying unit 313, and the transmitting amplifying unit 315, respectively. The local crystal oscillator 318 is electrically connected to the receive conversion unit 314 and the transmit conversion unit 316, respectively. The receiving and converting unit 314 is electrically connected to the receiving and amplifying unit 313 and the baseband processing module 320, respectively. The transmitting and converting unit 316 is electrically connected to the transmitting and amplifying unit 315 and the baseband processing module 320, respectively. The second antenna 220 is a half-duplex antenna for switching the transmission path and the receiving path of the analog Morse code signal.

The Morse code transmitting/receiving module 310 receives the digital Morse code signal, and the transmission conversion unit 316 converts the digital Morse code signal into an analog Morse code signal. The local crystal oscillator 318 modulates the analog Morse code signal. Launch amplification The unit 315 performs the primary amplification of the modulated analog Morse code signal, and the transmit/receive switching unit 312 switches to the transmission path, and the analog antenna of the Morse code is externally transmitted by the second antenna 220. The frequency of the analog Morse code signal transmitted by the second antenna 220 is 1K~1000KHz. The electromagnetic wave corresponding to this frequency belongs to the long wave range, and the loss is small when the space propagates, and has a longer propagation distance than the standard communication signal electromagnetic wave emitted by the first antenna.

When the second antenna 220 receives the analog Morse code signal sent by the rescuer, the transmitting/receiving switching unit 312 switches to the receiving path, and the receiving amplifying unit 313 preamplifies the analog Morse code signal received. To compensate for the energy attenuation generated by the signal during the propagation process. The local crystal oscillator 318 demodulates and receives the analog Morse code signal. The receiving conversion unit 314 converts the analog Morse code signal into a digital Morse code signal and transmits it to the Morse code conversion unit 326 of the baseband processing module 320. The Morse code conversion unit 326 converts the digital Morse code signal into a digital voice signal and transmits it to the voice conversion unit 322. The voice converting unit 322 converts the digital voice signal into an analog voice signal. The analog voice signal is output to the voice output unit 230 through the output interface 350 to emit a specific tone sound. The Morse code conversion unit 326 can convert the digital Morse code signal into a digital text signal and transmit it to the text conversion unit 324. The text conversion unit 324 converts the digital text signal into text information, and outputs it to the display unit 240 through the output interface 350 to display, for example, the rescue information sent by the rescuer.

Referring to FIG. 5, when the user encodes the digital Morse code signal by using the buttons 202 and 204, the voice output unit 230 and the display unit 240 can also confirm whether the content of the currently encoded digital Morse code signal is correct. The Morse code conversion unit 326 converts the digital Morse code signal encoded by the buttons 202, 204 into a digital voice signal, and transmits The voice conversion unit 322 is provided. The voice converting unit 322 converts the digital voice signal into an analog voice signal, and outputs it to the voice output unit 230 through the output interface 350 to issue, for example, a help voice. The Morse code conversion unit 326 can convert the digital Morse code signals encoded by the buttons 202 and 204 into digital text signals and transmit them to the text conversion unit 324. The text conversion unit 324 converts the digital text signal into text information, and outputs it to the display unit 240 through the output interface 350 to correspondingly display the help message input that the user is input.

Referring to FIG. 6, a communication method of the mobile communication terminal device 200 is as follows: First, in step 910, it is detected whether a standard communication signal (an electromagnetic wave signal specified by a standard such as GSM, CDMA, TDMA, etc.) is received, and if a standard communication signal is detected, Step 920, the Morse code transmitting/receiving module 310 is turned off; if the standard communication signal is not detected, in step 930, the Morse code transmitting/receiving module 310 is turned on.

Next, in step 940, it is detected again whether the standard communication signal is received. If the standard communication signal is detected, the process returns to step 910. If the standard communication signal is not detected, in step 950, the wireless transmission/reception module 320 is turned off.

Then, in step 960, the input signal is detected. The input signal is generally a voice signal input by the text input unit 250 or the voice input unit 260. If an input signal is detected, the detailed steps will be as follows: Further, if the input signal is not detected, step 970 detects the received signal, and the received signal is generally an analog Morse code signal transmitted from the outside to the mobile communication terminal device 200. If the input signal is not detected, the process returns to step 960; if the input signal is detected, step 980, the information is returned, and the text information is generally displayed by the display unit 240.

Referring to FIG. 6 and FIG. 7, the detailed process of detecting the input signal is as follows: First, in step 961, it is detected whether the Morse buttons 202 and 204 have an input signal. If the Morse buttons 202 and 204 are detected to have an input signal, in step 962, the input information is displayed, and the text information is generally displayed by the display unit 240. Next, in step 963, an analog Morse code signal is sent.

Then, if it is detected that the Morse buttons 202 and 204 have no input signal, step 964 detects the voice signal input by the voice input unit 260. If it is detected that the voice input unit 260 has a voice input signal, step 965 displays the input information. The text information is displayed by the display unit 240, and then the analog Morse code signal is transmitted in step 966.

Next, if it is detected that the voice input unit 260 does not have a voice input signal, in step 967, it is detected whether the text input unit 250 has a text signal input. If it is detected that the text input unit 250 has a text input signal, step 968, displaying the input information, generally The text message is displayed by the display unit 240, and then the analog Morse code signal is transmitted in step 969.

Then, if it is detected that the character input unit 250 does not have a character input signal, it returns to step 961. If the steps 963, 966, and 969 are performed, the process returns to step 961.

The mobile communication terminal device 200 described above can perform normal voice communication, send and receive text messages, and the like through the wireless transmitting/receiving module 330 when the cellular wireless communication system has signal coverage. When the cellular wireless communication system has no signal coverage, on the one hand, the voice input unit 260 can input the voice signal, or the text input unit 250 can input the text information, and the baseband processing module 320 converts the voice signal and the text information. The Morse code signal is digitized, and then the Morse code transmitting/receiving module 310 transmits/receives the analog Morse code signal. On the other hand, it can also input the digital Morse code signal directly by the Morse code buttons 202 and 204. The Morse code transmitting/receiving module 310 transmits/receives an analog Morse code signal. In this way, the problem of communication between mobile communication devices is not solved.

The mobile communication terminal device 200 described above is only a preferred embodiment, and those skilled in the art can make simple modifications without departing from the invention. For example, the mobile communication terminal device 200 can also encode information such as voice, text, graphics, etc. according to other forms of encoding rules. The mobile communication terminal device 200 can also implement wireless communication by transmitting and receiving analog code signals corresponding to the code as long as the default coding rule is followed.

The second antenna 220 can also be a full-duplex antenna, that is, the analog Morse code signal is received by one antenna alone, and the analog Morse code signal is transmitted by another antenna.

When receiving the rescue signal sent by the rescue party, the mobile communication terminal device 200 can send a voice signal for normal communication through the voice output unit 230, and can also emit a Morse code signal with a specific tone, which is familiar with the Morse code encoding rule. The user can learn the information sent by the rescuer by listening to the voice tone.

When the multi-function mobile communication terminal 100 cannot receive the RF signal, when the baseband processing module 320 turns on the Morse code transmitting/receiving module 310, the wireless transmitting and receiving module 330 can also be turned off to save the cost of the mobile phone searching network. The power.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and those skilled in the art will be able to include the equivalent modifications or variations in the spirit of the present invention.

210‧‧‧first antenna

220‧‧‧second antenna

310‧‧‧ Morse code transmitting/receiving module

320‧‧‧Baseband processing module

330‧‧‧Wireless Transmit/Receive Module

350‧‧‧ Output interface

360‧‧‧Input interface

230‧‧‧Voice Input Department

240‧‧‧Display Department

250‧‧‧Text Input Department

260‧‧‧Voice Input Department

Claims (17)

A mobile communication terminal device includes a first antenna, a first transmitting/receiving module, and a baseband processing module. The first antenna is electrically connected to the first transmitting/receiving module and the baseband processing module. The first antenna is configured to transmit/receive a standard communication signal, and the first transmitting/receiving module converts the standard communication signal into a digital baseband signal, and the baseband processing module converts the digital baseband signal into an output signal, and the improvement is The mobile communication terminal device further includes a second antenna and a second transmitting/receiving module, wherein the second antenna is electrically connected to the second transmitting/receiving module and the baseband processing module in sequence, when the first day When the line receives the standard communication signal, the baseband processing module places the electrical connection terminal of the second transmitting/receiving module and the baseband processing module in a high impedance state to close the second transmitting/receiving module; When the first antenna has no standard communication signal input, the baseband processing module turns off the first transmitting/receiving module, so that the electrical connection terminals of the second transmitting/receiving module and the baseband processing module normally input and output signals. Open Transmitting the second transmitting/receiving module, the baseband processing module receives the input signal, and converts the input signal into a digital code signal of a preset encoding rule, and the second transmitting/receiving module converts the digital signal signal into Analogous to the code signal, the second antenna transmits the analog code signal. The mobile communication terminal device according to claim 1, wherein the first transmitting/receiving module is a wireless transmitting/receiving module. The mobile communication terminal device according to claim 1, wherein the second transmitting/receiving module is a Morse code transmitting/receiving module, and the baseband processing module receives an input signal and converts the input signal into The digital Morse code signal, the second transmitting/receiving module converts the digital Morse code signal into an analog Morse code signal, and the second antenna transmits the analog Morse code signal. For example, in the mobile communication terminal device described in claim 3, the second antenna receives the external direction The mobile communication terminal device transmits an analog Morse code signal, and the Morse code transmitting/receiving module converts the analog Morse code signal into a digital Morse code signal, and the baseband processing module uses the digital code. The semaphore signal is converted into an output signal. The mobile communication terminal device according to claim 4, wherein the mobile communication terminal device comprises a voice output unit, the baseband processing module comprises a Morse code conversion unit and a voice conversion unit, and the Morse code conversion unit receives The digital Morse code signal converts the digital Morse code signal into a digital voice signal, and the voice conversion unit converts the digital voice signal into an analog voice signal, and the voice output unit outputs the analog voice signal. The mobile communication terminal device of claim 5, wherein the mobile communication terminal device comprises a voice input unit, the voice input unit inputs an analog voice signal, and the voice conversion unit converts the analog voice signal into a digital voice signal, The Morse code conversion unit converts the digital voice signal into a digital Morse code signal. The mobile communication terminal device according to claim 5, wherein the mobile communication terminal device comprises a display unit, the baseband processing module includes a text conversion unit, and the Morse code conversion unit receives the digital Morse code signal. And converting the digital Morse code signal into a digital text signal, the text conversion unit converting the digital text signal into text information, and the display unit displays the text information. The mobile communication terminal device of claim 7, wherein the mobile communication terminal device comprises a text input unit, the text input unit inputs text information, and the text conversion unit converts the text information into a digital text signal, the moir The code conversion unit converts the digital text signal into a digital Morse code signal. The mobile communication terminal device according to claim 4, wherein the Morse code transmitting/receiving module comprises a local crystal oscillator, a transmitting conversion unit, and a receiving conversion unit, wherein the transmitting conversion unit and the receiving and converting unit are electrically connected to the a local crystal oscillator and the baseband processing module, the local crystal oscillator modulates and demodulates an analog Morse code signal, and the transmit conversion unit converts the digital Morse code The signal is converted into an analog Morse code signal, and the receiving conversion unit converts the analog Morse code signal into a digital Morse code signal. The mobile communication terminal device according to claim 9, wherein the Morse code transmitting/receiving module comprises a transmitting/receiving switching unit, and the Morse code transmitting/receiving module receives an analogous Morse code of the outside world. When the signal is received, the transmitting/receiving switching unit switches to the receiving path; when the Morse code transmitting/receiving module transmits the analog Morse code signal to the outside, the transmitting/receiving switching unit switches to the transmitting path. For example, in the mobile communication terminal device described in claim 6, the mobile communication terminal device includes a Morse code button, and the Morse code button inputs a digital Morse code signal, and the baseband processing module selects the digital device. The semaphore signal is transmitted to the Morse code transmitting/receiving module and converted into an analog Morse code signal, and the second antenna transmits the analog Morse code signal. The mobile communication terminal device according to claim 11, wherein the Morse code conversion unit receives the digital Morse code signal input by the Morse code button, and converts the digital Morse code signal into a digital position. a speech signal, the speech conversion unit converts the digital speech signal into an analog speech signal, and the speech output unit outputs the analog speech signal. The mobile communication terminal device according to claim 12, wherein the Morse code conversion unit receives the digital Morse code signal input by the Morse code button, and converts the digital Morse code signal into a digital position. a text signal, the text conversion unit converts the digital text signal into text information, and the display unit displays the text information. A communication method for a mobile communication terminal device, comprising the steps of: detecting whether a standard communication signal is received; and receiving a standard communication signal, so that a transmitting/receiving module for transmitting an analog signal signal is in a high impedance state to turn off the transmission / receiving module; if the standard communication signal is not received, the transmitting/receiving module for transmitting the analog code signal is turned on Detecting whether an input signal is received; transmitting an analog code signal; detecting whether a standard communication signal is received; turning off a first transmitting/receiving module that receives the standard communication signal; detecting whether an analog code signal is received; and feeding back information. For the communication method of the mobile communication terminal device according to claim 14, the step of detecting the input signal further comprises the steps of: detecting whether the voice input unit receives the analog voice input signal; and detecting whether the text input unit receives the text input signal; Displaying the text information corresponding to the voice signal or the text signal; converting the voice signal or the text signal into a digital code signal; converting the digital code signal into an analog code signal; and transmitting the analog code signal. The communication method of the mobile communication terminal device according to claim 15, wherein the second transmitting/receiving module is a Morse code transmitting/receiving module, and the Morse code transmitting/receiving module transmits/receives Analog Morse code signal. The communication method of the mobile communication terminal device according to claim 15, further comprising the steps of: detecting whether the Morse key input is input with a digital Morse code signal; and displaying the text information corresponding to the digital Morse code signal. Or a voice signal; converting the digital Morse code signal into an analog Morse code signal; transmitting the analog Morse code signal.