KR100595697B1 - Method for processing auto channel in wireless terminal with digital multimedia broadcasting - Google Patents

Abstract

The present invention relates to an automatic channel processing method of a mobile terminal having a DMB function. The automatic channel of a mobile terminal having a DMB function capable of quickly processing a DMB service by storing field information of the FIC in advance in an automatic channel retrieval process It relates to a treatment method. To this end, the present invention comprises the steps of automatically setting the channel when the switch to the DMB mode; Receiving a DMB signal of a predetermined channel during the automatic channel search; Parsing the FIC in the DMB signal of the received channel and storing information of a main field; By repeating the above process, parsing the FIC of the DMB signal for each channel and storing the information of the main field, there is an effect that the DMB service function can be processed more quickly.

Description

Automatic channel processing method of portable terminal with DMB function {METHOD FOR PROCESSING AUTO CHANNEL IN WIRELESS TERMINAL WITH DIGITAL MULTIMEDIA BROADCASTING}

1 illustrates a format of a DMB signal.

2 is a diagram illustrating a process of processing an automatic channel in a mobile terminal having a DMB function according to an embodiment of the present invention.

The present invention relates to an automatic channel processing method of a mobile terminal having a DMB function. In particular, the present invention relates to a method for automatically processing a DMB service by storing field information of a fast information channel (FIC) in advance in an automatic channel search process. An automatic channel processing method of a portable terminal.

DMB (Digital Multimedia Broadcasting) is a new name for DAB (Digital Audio Broadcasting), commercially available in Europe and the United States for mobile TV. Whereas DAB refers to audio-driven digital radio broadcasting, DMB extends the concept of digital radio broadcasting to "seeing and listening" multimedia broadcasting. The Ministry of Information and Communication recently renamed DAB to DMB to take advantage of multimedia broadcasting. It is divided into free terrestrial DMB and satellite DMB, which is to be paid for, depending on the use of satellites and service bands.

The terrestrial DMB is a mobile multimedia broadcasting capable of providing high quality voice and video services anytime, anywhere, and can extend the concept of radio broadcasting from "hearing broadcast" to "seeing and listening broadcast." Based on excellent mobile reception characteristics, various contents such as music, text and video are delivered through portable terminals such as small TVs and PDAs. In addition, by establishing a complementary relationship with digital terrestrial TV broadcasting pursuing high quality and high sound quality, it is possible to create a breakthrough demand for mobile terminals through a combined service with PDA and mobile communication terminal.

In addition, the satellite DMB provides a multimedia broadcasting service including audio, additional data, or video to a fixed and mobile portable receiver through a satellite. It is a next-generation service that can provide a wide range of quality audio broadcasting services at low cost and use satellites to greatly expand the audible range of existing broadcasting by covering a large area. It was highlighted as a representative service of the age of convergence of telecommunication and broadcasting, that is, digital convergence.

Recently, a portable terminal having a DMB function as described above has been implemented. When the user selects a channel in the DMB mode of the portable terminal equipped with the DMB function, the DMB signal of the selected channel is selectively received through an analog tuner. The digitized output is passed to a demodulator, and the channel decoder eliminates transmission errors. In addition, the information contained in the fast information channel (FIC) of the DMB signal is passed to the user interface (user interface) for the selection of the service, the MSC (Main Service Channel) data of the DMB signal is transmitted to an audio decoder The audio signal is converted into left and right audio signals and converted into a data signal by a packet demux.

When the DMB signal of the selected channel is received as described above, the service information of the fast information channel (FIC) is retrieved from the DMB signal to perform a DMD service function through the main service channel (MSC) data.

Therefore, the present invention has been created to solve the above problems, automatic channel processing method of a mobile terminal having a DMB function that can quickly process the DMB service by storing the field information of the FIC in advance in the automatic channel search process The purpose is to provide.

In order to achieve the above object, the present invention provides a method for automatically setting and retrieving a channel when switching to a DMB mode; Receiving a DMB signal of a predetermined channel during the automatic channel search; Parsing the FIC in the DMB signal of the received channel and storing information of a main field; While repeating the above steps, the FIC of the DMB signal for each channel is parsed to store information of main fields.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

It should be noted that in the following description, only parts necessary for understanding the operation and operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

1 is a diagram illustrating a format of a DMB signal.

Referring to FIG. 1, a format of the DMB signal is described. The DMB signal includes a fast information channel (FIC) 110 and a main service channel (MSC) data (hereinafter, referred to as “MSC”). 120).

The main service channel (MSC) data 120 stores an actual data stream of a corresponding channel, and the fast information channel (FIC) 110 stores service information of the main service channel (MSC) data 120. do.

The fast information channel (FIC) 110 is formed of a fast information channel (FIB), and the FIB is formed of FIG.

The main fields of FIG are EID (ensemble ID) field, SID (Service ID) field, SCID (Service Componet ID) field, SubChId (sub ch ID) field, PS Flag (Primary or Secondary) field, PD Flag (Program or data) field, TMID (service type) field, SL (Service Lable) field, EL (ensemble Lable) field, and SCL (Service Component Lable) field.

In the EID (ensemble ID) field, ID information of a channel ensemble is stored. For example, corresponding ID information of a channel ensemble such as KBS, MBC, SBS, and the like is stored.

The service ID (SID) field stores information about a service type of a channel ensemble stored in the ensemble ID (EID) field. For example, ID information corresponding to any one of a TV, radio or data channel of a KBS ensemble. Is stored.

ID information of a service component is stored in the SCID field, and subchannel ID information is stored in the SubChId field.

Priority information regarding a service type of a channel ensemble stored in the SID (Service ID) field is stored in the PS Flag (Primary or Secondary) field, and the SID (Service ID) field in the PD Flag (Program or data) field. Information for identifying whether the service type of the channel ensemble stored in the program or the data is stored.

In the TMID (service type) field, service name information displayed on a display unit on which a DMB service is performed is stored, and in the SL (Service Lable) field, name information on service type of a channel ensemble displayed on a display unit on which a DMB service is performed. Is stored.

The EL (ensemble Lable) field stores name information on the channel ensemble displayed on the display unit performing the DMB service, and the SCL (Service Component Lable) field indicates the name of the service component displayed on the display unit performing the DMB service. The fold is stored.

 2 is a diagram illustrating a process of processing an automatic channel in a mobile terminal having a DMB function according to an embodiment of the present invention.

Referring to FIG. 2, when the DMB is selected by the portable terminal, the controller for controlling the overall operation of the portable terminal detects this in step 201 and switches the portable terminal to the DMB mode.

When the DMB mode is switched, the DMB unit controlling the DMB function proceeds to step 202 to automatically search for a channel. When the DMB signal for any one of the plurality of channels received through the automatic channel search is received, the DMB unit detects this in step 203 and receives the DMB signal.

The DMB unit transmits only the FIC 110 among the received DMB signals to the controller, and the controller receiving the FIC 110 proceeds to step 204 of parsing the FIC 110.

In step 204, the controller performs FIC 110 parsing on a corresponding channel. The FIC 110 is composed of FIBs, and each FIB is composed of FIGs.

Therefore, the controller sequentially parses the respective FIGs of the FIBs constituting the FIC 110 and stores only the main field information in the memory of the portable terminal.

By repeating the above process, the controller parses from the first FIG of the first FIB constituting the FIC 110 to the last FIG of the last FIB, and stores information of a main field in the memory. The FIC parsing operation may be performed every 96ms, and may be performed for 1 second at 960ms while repeating 10 times.

When the parsing process of the FIC is completed, the controller searches whether all the information of the main field of one channel is stored.

If all the information of the main field for one channel is not filled, the controller detects this in step 205 and performs the FIC parsing process of step 204 again from the beginning.

However, when the information on all the fields of the FIC 110 is stored in the memory, the controller detects this in step 205 and waits for the FIC 110 to receive the DMB signal of another channel from the DMB unit.

When the DMB unit receives the DMB signal of the other channel among the received channels, the DMB unit detects it in step 206 and repeats steps 203 to 205.

Through the above processes, the portable terminal parses the FIC from each DIM signal of all channels received in the automatic channel search process and stores the information stored in the field of the FIC for each channel.

When the user selects a certain channel after the automatic channel search process is completed, the DMB unit receives the DMB signal of the selected channel. In this case, the DMB unit may receive only the MSC data 120 among the DMB signals, and perform a DMB service function of displaying data of the selected channel on the display unit through FIC information of the selected channel stored in the memory.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention provides an automatic channel processing method capable of quickly processing a DMB service by storing field information of the FIC in advance in an automatic channel search process, thereby processing a DMB service function more quickly.

Claims (5)

When the DMB mode is switched, the channel is automatically set up and searched, Receiving a DMB signal of a predetermined channel during the automatic channel search; Parsing the FIC in the DMB signal of the received channel and storing information of a main field; Repeating the above steps and parsing the FIC of the DMB signal for each channel to store information of the main field. The method of claim 1, After the automatic channel search process, selecting a channel; Receiving only the MSC data from the DMB signal of the selected channel to perform a DMB service, the automatic channel processing method of a mobile terminal with a DMB function, characterized in that further comprising The method of claim 1, wherein parsing the FIC and storing information of a main field is performed. Storing the information of the main field by sequentially parsing the FICs constituting each FIB from the FIBs constituting the FIC; Repeating the above process, when parsing the last FIC of the last FIB constituting the FIC is completed, searching whether all the information of the main field is stored; If all the information of the main field is not stored, the automatic channel processing method of the mobile terminal, characterized in that further comprising the step of performing the parsing process of the FIC again. The method of claim 1, Through the FIC parsing process, EID (ensemble ID) field, SID (Service ID) field, SCID (Service Componet ID) field, SubChId (sub ch ID) field, PS Flag (Primary or Secondary) field Information on the PD Flag (Program or data) field, TMID (service type) field, SL (Service Lable) field, EL (ensemble Lable) field, and SCL (Service Component Lable) field is stored in the mobile terminal for each channel. Automatic channel processing method of a portable terminal having a DMB function. The method of claim 1, The DMB signal is an automatic channel processing method of a portable terminal having a DMB function, characterized in that consisting of FIC and MSC data.

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