CN1582029A - Mobile terminal capable of receiving wireless context broadcasting and its method for processing signal - Google Patents

Abstract

A mobile terminal capable of receiving wireless text broadcasting and a signal processing method thereof, the mobile terminal includes a digital processing control module, a display module, a mobile terminal module and a radio circuit module; The text extracting circuit module connected with the module and the radio circuit module. The mobile terminal is a multi-functional communication terminal, which not only has the functions of a mobile terminal and a radio, but also has its inherent voice, data and image communication and text information uplink transmission functions; it also has the ability to receive sound broadcasts and text broadcasts through wireless broadcast channels The function enables the terminal to receive various broadcast text information sent by the wireless broadcast provider, provides real-time information interaction between the terminal user and the wireless broadcast provider, and provides technology for the wireless broadcast provider to develop new interactive services equipment.

Description

Mobile terminal capable of receiving wireless text broadcasting and signal processing method thereof

technical field

The invention relates to a mobile terminal capable of receiving wireless text broadcast and a method for processing the broadcast text signal, belonging to the technical field of mobile communication.

Background technique

The Chinese invention patent "Mobile Phone with Radio Function" (Patent No.: ZL98121515.7) developed by the applicant discloses a digital processing control module and other related components of the mobile phone, and then integrates the radio receiving circuit module, so that the mobile phone can Receive the sound broadcast of the radio station, realize one thing with multiple functions, become a new type of mobile phone with the function of digital tuning radio, provide a new channel for mobile phone users to obtain sound broadcast information, and give full play to the role of mobile phones as portable electronic products Versatile benefit.

In recent years, new broadcasting technologies have enabled broadcasters to receive various text messages using digital radios. Moreover, the text service provided by radio stations is likely to be free, because they can cover the cost of providing text information services by broadcasting advertisements. but. No mobile phone capable of receiving over-the-air broadcast text messages has been found on the market. However, mobile operators in almost all countries have already seen the huge business opportunities in this new media channel. Many mobile device manufacturers have invested manpower and material resources in the research and development of this field in order to find a technical solution to achieve a win-win situation for wireless broadcasting stations and mobile operators.

The above-mentioned Chinese invention patent "Mobile Phone with Radio Function" developed by the applicant is also unable to receive and process text messages sent by wireless broadcast stations, and users cannot use this type of mobile phone to obtain broadcast text messages sent by radio stations. How to continue to improve on the basis of this invention patent application, so that it can receive the information service of wireless broadcast text, naturally becomes a new project that the applicant needs to further research and develop.

Contents of the invention

The purpose of the present invention is to provide a mobile terminal capable of receiving wireless text broadcasts. The mobile terminal not only has its inherent function of sending information uplink, but also has the function of receiving voice broadcasts and text broadcasts through wireless broadcast channels, so that the terminal can receive Various broadcast text information sent by the wireless broadcast provider, for the terminal user to interact with the wireless broadcast provider in real time, and for the wireless broadcast provider to develop new interactive services (such as stock market information text broadcast, music on demand and other Message on demand (MOD, message on demand) and other services) provide a technical basis.

Another object of the present invention is to provide a method for processing a broadcast text signal in a mobile terminal capable of receiving wireless text broadcast, so that the mobile terminal can integrate the wireless broadcast channel to receive and broadcast text signals under the premise of having both the functions of a mobile terminal and a radio. The function of processing text broadcast information becomes a multifunctional communication terminal.

The purpose of the present invention is achieved in that a mobile terminal capable of receiving wireless text broadcasting includes a digital processing control module, a display module, a mobile terminal module and a radio circuit module; The text extracting circuit module connected with the module and the radio circuit module.

The described text extraction circuit module includes a secondary filter circuit, an analog-to-digital conversion circuit, and a text decoder, and the described secondary filter circuit is connected to the demodulation/filter/amplification circuit in the radio circuit module, thereby obtaining the intermediate frequency signal , perform secondary filtering to obtain the text modulation signal stream, then send it to the analog-to-digital conversion circuit for conversion, output the text digital signal to the text decoder, and send the decoded text information to the digital processing control module for further processing After processing, it is sent to the display module for display.

The text extraction circuit module further includes a text display switch, the text display switch is connected to the digital processing control module, and when the digital processing control module detects that the text display switch is off, the secondary filter circuit is turned off to save electric energy .

Described mobile terminal module is the control circuit module in mobile phone and personal digital assistant PDA, comprises radio frequency module, input module, digital-to-analog conversion module, drive module, buzzer, microphone, loudspeaker, earphone port, and all The above-mentioned text extraction circuit module shares the analog-to-digital conversion circuit and the text decoder.

The text decoder is the text decoding software stored in the digital processing control module.

The radio circuit module further includes a channel selection button connected to the digital processing control module, and the digital processing control module controls the demodulation/filtering/ Amplify the circuit to switch the text broadcasting channel.

Another object of the present invention is achieved like this: a kind of mobile terminal that can receive wireless text broadcasting processes the method for broadcasting text signal, it is characterized in that: mainly comprise following operation steps:

A. The digital processing control module detects whether the secondary filter circuit outputs a signal;

B. If the secondary filter circuit outputs a signal, start the text decoder, decode the digital broadcast text information after the analog-to-digital conversion, and output the broadcast text information flow;

C. Display or save broadcast text information according to user settings.

Further comprise the following steps before described step A:

Whether the text display switch is turned on is detected by the digital processing control module;

If the text display switch is closed, the digital processing control module closes the secondary filter circuit in the text extraction circuit module;

If the text display switch is turned on, the digital processing control module controls the demodulation/filtering/amplification circuit in the radio circuit module according to the channel selection button set by the user to switch channels and receive broadcast text information.

Described step A further comprises the following steps:

A1. If the secondary filtering circuit has no output signal, the digital processing control module processes the received website page content, email, short message or other non-broadcast text information;

A2. If it is detected that the signal output by the secondary filter circuit does not meet the set power requirement, the digital processing control module closes the text decoder, so as to avoid the output of garbled characters by the display module;

A3. If the secondary filtering circuit outputs a signal normally, the output signal is first sent to the analog-to-digital conversion circuit for analog-to-digital conversion processing.

In step C, there are three ways to display the broadcast text information according to user settings: single-line scrolling display at the top of the display screen, single-line scrolling display at the bottom end of the display screen, and full-screen scrolling display on the display screen.

The present invention is a multifunctional mobile communication terminal device, which integrates the mobile terminal, digital tuner radio and the function of receiving text broadcast information through wireless broadcast channels, and fully embodies the convenient, flexible and practical effects of portable electronic products . The device not only has voice, data, and image communication functions of mobile terminals, but also can realize uplink transmission of information; it can also listen to news, opera, folk art, live sports games or FM music programs on radio stations and TV stations, enriching people's leisure time or Travel life; it can also receive various broadcast text information provided by wireless broadcast senders, realize real-time information interaction between end users and wireless broadcast senders, and provide new services such as music on demand, stock market information text broadcast and other news on demand. The development of interactive business provides technical equipment. Compared with receiving point-to-point short messages and cell-wide broadcast short messages, the performance advantage of the present invention is that the device can receive text broadcast information issued by a plurality of different broadcast stations, and has a greater bandwidth than point-to-point short messages. downlink capacity.

The circuit structure of the present invention is characterized by modularization and high degree of generalization, fully utilizes the digital processing control module of the mobile terminal, the digital radio circuit module and its peripheral display module, and adds a text extraction circuit module and related application processing software Various functions of the present invention can be realized by making appropriate modifications. Therefore, the circuit structure is simple and practical, and the operation is reliable and stable.

Description of drawings

Fig. 1 is the block diagram of the circuit structure of the invention patent application "mobile phone with radio function" (application number: 98121515.7).

FIG. 2 is a block diagram of a circuit structure of a mobile terminal capable of receiving wireless text broadcasting according to the present invention.

Fig. 3 is a connection block diagram of the text extraction circuit module, the digital processing control module and the radio circuit module in the present invention.

Fig. 4 is a flowchart of a method for processing broadcast text signals by a mobile terminal capable of receiving wireless text broadcasts according to the present invention.

Fig. 5 is a flow chart of an embodiment of interaction between a mobile terminal and a wireless broadcast station using the present invention.

Detailed ways

Referring to Fig. 2 and Fig. 3, the present invention is a mobile terminal capable of receiving wireless text broadcasting, comprising a digital processing control module, a radio frequency module, a liquid crystal display module, a keyboard input module, a digital-to-analog conversion module, an analog-to-digital conversion module, a drive The mobile terminal component composed of the module, the buzzer, the microphone, the loudspeaker, the earphone port, and the radio circuit module also includes a text extraction circuit module connected with the digital processing control module and the radio circuit module respectively. The text extraction circuit module includes a secondary filter circuit, an analog-to-digital conversion circuit, a text decoder and a text display switch. The analog-to-digital conversion circuit and the text decoder in the text extraction circuit module can be replaced by the text decoding software stored in the analog-to-digital conversion module and the digital processing control module in the mobile terminal respectively.

Mobile terminal shown in Fig. 2 is the circuit structure block diagram of the mobile phone that contains SIM card, if mobile terminal is personal digital assistant PDA, the difference of its circuit structure and Fig. 2 is only that SIM card has been lacked.

Introduce below in conjunction with Fig. 3 and Fig. 2 the operating principle of the present invention receiving and processing text broadcast information:

The outer shielded wire of the external earphone in the radio circuit module is also used as an antenna. The broadcast station signal received by the earphone antenna is processed into an intermediate frequency signal by the demodulation \ filter \ amplification circuit, and then all the way is demodulated into an audio signal by the radio circuit frequency discrimination , sent to the drive module for power amplification, and then output to speakers or earphones; the other intermediate frequency signal is sent to the secondary filter circuit in the text extraction circuit module for filtering, to obtain low-speed broadcast text modulation signal stream, and then sent to analog-to-digital conversion The circuit converts and outputs the text digital signal to the text decoder, and the decoded text information is sent to the digital processing control module for processing, and then sent to the display module for display.

See Figure 4. The concrete flow that the digital processing control module among the present invention controls the whole flow of text decoding is:

(101) Whether the digital processing control module detects the text broadcast switch is turned on; if the text broadcast switch is closed, the digital processing control module closes the secondary filter circuit in the text extraction circuit module to save power; if the text broadcast switch is open , the digital processing control module controls the demodulation/filtering/amplification circuit in the radio circuit module to switch channels according to the channel selection button set by the user, so as to be able to receive broadcast text information. Moreover, when the text broadcasting display function is set to open, if the analog-to-digital conversion circuit detects that the signal output by the secondary filter circuit is not strong enough, it will report to the digital processing control module and close the text decoder, so as not to be in a certain radio station. When the channel has no broadcast text signal output, the display module outputs garbled characters.

(102) Detect whether the secondary filtering circuit outputs a signal by the digital processing control module, if the secondary filtering circuit does not have an output signal, then the digital processing control module controls the terminal display mode to be a full-screen display, that is, to the received website page content, email , short messages or other non-broadcast text information for full-screen display processing; if the secondary filter circuit outputs a signal, the digital processing control module first sends the output broadcast text information to the analog-to-digital conversion circuit for analog-to-digital conversion processing.

(103) Start a software text decoder or a hardware text decoder to decode the converted digital broadcast text information.

(104) Outputting the broadcast text information stream to the digital processing control module.

(105) The digital processing control module displays and/or saves the broadcast text information flow according to user settings. Usually, there are three ways to display text broadcast information: single-line scrolling display at the top of the display screen, single-line scrolling at the bottom end of the display screen display, the display screen scrolls in full screen.

The user can switch the broadcast channel and set the display function of opening/closing its text broadcast information through the special channel selection button or software on the mobile terminal of the present invention, and the demodulation/filtering is controlled by the digital processing control module according to the operation of the user channel button \ Amplifying circuit for channel switching. At this point, the text broadcast channel will switch along with the voice broadcast channel. When the voice broadcast function is turned off and the text display function is turned on, the digital processing control module will control the demodulation\filter\amplification circuit according to the operation of the user's channel selection button, and continue to switch channels to ensure the switching and reception of text broadcast channels . Moreover, as long as the text broadcast function is turned on and the channel has text information broadcast, the content of the text broadcast information will always be displayed on the display module of the present invention. In the case that the text broadcast function is not started, the information received by the mobile terminal module can use all the lines (for example, N lines) on its display screen to display relevant information; when the text broadcast function is turned on, the text broadcast message will be The top or bottom line of the terminal display screen is scrolled in series, and other information received through the mobile terminal can only be displayed on the (N-1) line display screen. Users can also choose to display broadcast text messages in full screen.

The user can start the storage function of the broadcast text information of the mobile terminal of the present invention through software setting or a specific button, store the received broadcast text information, and close the information storage function after receiving. The user can further process the stored text information, such as sending the stored content through a short message and so on.

The following simple examples illustrate the implementation and application of the present invention:

By utilizing the text broadcasting function of the mobile terminal of the present invention, users can watch text messages issued by wireless broadcasting stations or companies, such as program previews, stock market text information, friendship information, chat information, and the like. Take music on demand as an example: if the user wants to perform music on demand or want to broadcast a message, he can input the on-demand information through the keyboard input module, and then through the relevant modules of the mobile terminal (GSM, CDMA, 3G, WLAN, PHS, etc. can be used to mobile terminal) using short messages or other wireless data services (such as wireless circuit domain data services, wireless packet domain data services, etc.) to send the message to the specific (short message) number or server of the wireless broadcasting company, and the corresponding software or personnel for processing. If the order is successful, the message that the orderer successfully orders is broadcasted through a text message, or notified to the orderer through a short message or other wireless packet technology. The flow of an embodiment of the interaction between the user and the wireless broadcasting station using the mobile terminal of the present invention is shown in FIG. 5 , which will not be repeated here. In the figure,  represents the relationship of "logical or", and  represents the relationship of "logical and".

When an enterprise conducts activities such as award-winning quizzes or advertising effect investigations, it can use the radio station to send questions and answers through digital text broadcasting. After the user answers the relevant questions, the mobile terminal of the present invention will use the mobile terminal of the present invention to send the answer to the radio station or designated server through the mobile network. Going back, the radio station or enterprise can process and analyze the text information, get the result, and notify the user of the user's award through text broadcast.

Claims (10)

1, a kind of portable terminal that receives wireless text broadcasting includes digital processing control module, display module, mobile terminal module and receiver circuit module; It is characterized in that: also include respectively and extract circuit module with the text that the digital processing control module is connected with the receiver circuit module.

2, portable terminal according to claim 1, it is characterized in that: described text extracts circuit module and includes the secondary filtering circuit, analog to digital conversion circuit, the text decoder, described secondary filtering circuit connects the demodulation/filtering/amplifying circuit in the receiver circuit module, obtain intermediate-freuqncy signal thus, carry out the secondary filtering processing and obtain the text modulated signal stream, delivering to described analog to digital conversion circuit again changes, output textual number signal is to the text decoder, after text message after the decoding is delivered to described digital processing control module and handled, deliver to described display module again and show.

3, portable terminal according to claim 2, it is characterized in that: described text extracts circuit module and further comprises the text display switch, described text display switch connects described digital processing control module, detecting the text display switch in the digital processing control module is in when closing, close the secondary filtering circuit, saves energy.

4, portable terminal according to claim 1, it is characterized in that: described mobile terminal module is the control circuit module among mobile phone and the personal digital assistant PDA, comprise radio-frequency module, input module, D/A converter module, driver module, buzzer, microphone, loudspeaker, earphone mouth, and extract circuit module with described text and share analog to digital conversion circuit and text decoder.

5, portable terminal according to claim 2 is characterized in that: described text decoder is a stored text decoding software in the described digital processing control module.

6, portable terminal according to claim 1, it is characterized in that: described receiver circuit module further comprises the channel selection button that is connected with the digital processing control module, the channel selection button that described digital processing control module is set according to the user, control the demodulation/filtering/amplifying circuit in the described receiver circuit module, carry out the text broadcasting channel and switch.

7, a kind of portable terminal that receives wireless text broadcasting is handled the method for RTA Radio Text signal, it is characterized in that: mainly comprise following operating procedure:

A, detect whether output signal of secondary filtering circuit by the digital processing control module;

B, if the secondary filtering circuit output signal, start the text decoder, the digital broadcasting text message after the analog-to-digital conversion is deciphered processing, output RTA Radio Text information flow;

C, be provided with according to the user RTA Radio Text information do is shown or preserves and handle.

8, portable terminal according to claim 7 is handled the method for RTA Radio Text signal, it is characterized in that: further comprised the following steps: before described steps A

Whether detect the text display switch by the digital processing control module opens;

If the text display switch is a closed condition, then digital processing control module is closed the secondary filtering circuit in the text extraction circuit module;

If the text display switch is an opening, the channel selection button that then digital processing control module is set according to the user, the demodulation/filtering/amplifying circuit in the control receiver circuit module carries out channel and switches, and receives RTA Radio Text information.

9, portable terminal according to claim 7 is handled the method for RTA Radio Text signal, and it is characterized in that: described steps A further comprises the following steps:

A1, if the secondary filtering circuit do not have output signal, then digital processing control module is handled the Website page content, Email, note or other the non-RTA Radio Text information that receive;

A2, if detect the power requirement that the signal of secondary filtering circuit output does not reach setting, then digital processing control module is closed the text decoder, in order to avoid display module output mess code;

A3, if secondary filtering circuit normal output signal, then this output signal is admitted to analog to digital conversion circuit earlier and carries out analog-to-digital conversion process.

10, portable terminal according to claim 7 is handled the method for RTA Radio Text signal, it is characterized in that: according to the user display mode that RTA Radio Text information is handled being set among the described step C has three kinds: in display screen the top single file roll display, in display screen single file roll display bottom, the full frame roll display of display screen.

Images