KR20010010525A - Method for receiving radio broadcasting signal by use mobile terminal - Google Patents

Abstract

PURPOSE: A method for receiving radio broadcasts in a mobile wireless terminal is provided to generate a PN(Pseudo Noise) code for receiving a selected radio broadcast when a user selects a radio receiving mode to select a necessary broadcast channel, so as to listen to the radio broadcast without equipping a specific radio receiver. CONSTITUTION: A controller checks whether a radio mode selecting key is inputted from a key input(S301). If so, the controller outputs a PN(Pseudo Noise) code control signal for a shared spread corresponding to a current selected channel to a PN code generator(S302). The controller checks whether a channel selecting key of a corresponding broadcast is inputted from the key input(S303). If so, the controller outputs a PN code control signal for a shared spread corresponding to the inputted broadcast channel selecting key to the PN code generator(S304). The PN code generator generates a PN code corresponding to the selected channel to apply the PN code to a reverse spread demodulator. A user can listen to selected radio broadcast(S305). The controller checks whether a key for selecting a communication mode is inputted from the key input(S306). If not, the controller returns to the step'(S302)', and listens to the radio broadcast corresponding to the selected broadcast channel. If a key for selecting a communication mode is inputted, the controller outputs a PN code control signal for communication (S307). The PN code generator generates a PN code for communication, and to makes the reverse spread demodulator perform a reverse spread for communication.

Description

How to Receive Radio Broadcast in Mobile Wireless Terminals {METHOD FOR RECEIVING RADIO BROADCASTING SIGNAL BY USE MOBILE TERMINAL}

The present invention relates to a radio broadcast receiving method in a mobile wireless terminal, and more particularly, to a radio broadcast receiving method capable of listening to a radio broadcast using a common signal in the mobile wireless terminal.

In general, mobile phones are used to perform voice calls or to transmit simple data, and are used as necessities of modern people. In addition, people carry radio devices to listen to radio broadcasts, and also have separate mobile phones to carry out calls at the same time. Therefore, the user needs a service to listen to the radio with a mobile phone.

Accordingly, an object of the present invention is to provide a method for receiving a radio broadcast using a common reliable signal in a mobile wireless terminal.

In the method of receiving a radio in a mobile wireless terminal of the present invention for achieving the above object, a process of generating a PN code corresponding to a preselected broadcast channel when a radio mode selection key is input, and generating the generated PN code. And despreading and demodulating the radio broadcast signal received from the base station.

1 is a block diagram of a wireless communication system according to an embodiment of the present invention

2 is a control flow diagram for listening to a radio broadcast by a common spreading signal according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a wireless communication system according to an embodiment of the present invention.

It consists of a transmitter of a base station and a receiver of a mobile wireless terminal.

The base station transmitter detects a call state and a radio broadcast state and outputs a PN code generation control signal to the control unit 100, and a PN code assigned to a subscriber and a PN code assigned to a radio broadcast under the control of the control unit 100. PN code generation unit 102 for generating and outputting, Diffusion modulation unit 104 for spread-modulating and outputting by voice data or radio broadcasting data and PN code output from the PN code generation unit 102, and local oscillation. A first local oscillator 106 generating a frequency, a local oscillation frequency output from the first local oscillator 106 and a spread modulated signal from the spread modulator 104 to be mixed and transmitted through the antenna 110 It consists of a first mixer 108.

The receiver comprises a second local generator 206 for generating a local oscillation frequency, a second mixer 204 for mixing a local emission frequency generated by the second local oscillator 206 with a signal received from the antenna 214, A key input unit 212 and a key input unit 212 for generating and outputting key data by an external operation, comprising a number key for the radio mode selection key and dialing, a menu key and a selection key, and the key input unit 212. A control unit 200 for outputting a PN code control signal for common spread when a radio mode selection key is inputted, and a PN code control signal for a call when a call mode selection key is inputted; The PN code generation unit 202 for generating and outputting the PN code assigned to the subscriber and the PN code assigned to the radio broadcast under the control of the control unit), and generating the PN code by mixing and outputting the mixed signal from the first mixer 204. To the PN code output from the unit 202. A despreading demodulator 208 for despreading and outputting the data, and a data processor for detecting the despread signal from the despreading demodulator 208 using a correlator or a matched filter ( 210).

2 is a control flowchart for listening to a radio broadcast by a common spreading signal according to an embodiment of the present invention.

1 to 2, the operation of the preferred embodiment of the present invention will be described in detail.

In order to carry out the present invention, a base station must provide a service for wirelessly transmitting radio broadcast, and the control unit 100 of the base station controls the PN code generation unit 102 to generate a PN code for radio broadcast. The assigned PN code shall be generated. At this time, the PN code generator 102 generates a plurality of PN codes different for each broadcasting station and applies them to the spread modulator 104. Then, different broadcast signals for each broadcaster are mixed with the local oscillation frequency through the mixer 108 and radiated through the antenna 110.

First, in step 301, the controller 200 checks whether a radio mode selection key is input from the key input unit 212. If the radio mode selection key is not input, the controller 200 proceeds to step 307 and outputs a PN code control signal for passing. Then, the PN code generation unit 202 generates the PN code so that the despreading demodulation unit 208 despreads the call. However, if the radio mode selection key is input in step 301, the controller 200 proceeds to step 302 and outputs a PN code control signal for common spread corresponding to the currently selected channel to the PN code generator 202. Then, the PN code generator 202 outputs a PN code for common spreading corresponding to the currently selected channel, and the PN code despreads the radio broadcast signal output from the mixer 204 in the despreading demodulator 208. You can listen to radio broadcasts. In this case, the user may select and listen to one of a plurality of channels of radio broadcasting through the key input unit 212. In step 303, the controller 200 checks whether a channel selection key of the corresponding broadcast is input from the key input unit 212. If the channel selection key of the corresponding broadcast is input, the process proceeds to step 304. In step 304, the control unit 200 outputs a PN code control signal for common spreading corresponding to the corresponding broadcast channel selection key to the PN code generation unit 202. At this time, the PN code generator 202 generates a PN code corresponding to the selected channel and applies it to the despreading demodulator 208 to listen to the radio broadcast selected by the user in step 305. For example, in the state of listening to radio broadcasting using a mobile wireless terminal, for example, KBS 1, MBC 2, Christian Broadcast 3, Traffic Broadcast 4, Buddhist Broadcast 5, etc. are selected. By pressing the corresponding number key of), the PN code for selecting a desired broadcast channel is generated by the PN code generator 202 to despread so that the user can listen to the desired radio broadcast. Then, in step 306, the control unit 200 checks whether the call mode selection key is input from the key input unit 212. If the call mode selection key is not input, the control unit 200 returns to step 302 to listen to the radio broadcast corresponding to the currently selected broadcast channel. When the call mode selection key is inputted, the process proceeds to step 307. In step 307, the control unit 200 outputs a PN code control signal for a call. Then, the PN code generation unit 202 generates a PN code for the call so that the despreading and demodulation unit 208 despreads the call.

In an exemplary embodiment of the present invention, the radio broadcasting is received by using the mobile wireless terminal. For example, assuming that the base station provides text data rather than voice data, such as various information, for example, stock information, mobile wireless The terminal may also receive text data.

As described above, in the present invention, when a user selects a radio reception mode in a mobile radio terminal and generates a PN code for receiving the selected radio broadcast when a user selects a channel of a desired broadcast, a separate radio is received. There is an advantage that can listen to the radio broadcast without having a receiver.

Claims (2)

In the radio receiving method in a mobile wireless terminal, Generating a PN code corresponding to a preselected broadcast channel when a radio mode selection key is input; And despreading and demodulating the radio broadcast signal received from the base station by using the generated PN code. The method of claim 1, And generating a PN code corresponding to the input channel when a channel selection key of a plurality of broadcast channels is input during generation of the PN code corresponding to the preselected broadcast channel. Radio reception method in a wireless terminal.