KR100398603B1 - Analog and Digital Audio broadcasting Composition Receiver - Google Patents

Abstract

The disclosed invention relates to an analog and digital broadcast composite receiver.

More particularly, the present invention relates to an analog and digital broadcast composite receiver configured to selectively receive analog and digital signals, restore and output data of each signal, and further, store and transmit the received data to the outside. .

The analog and digital broadcast composite receiver includes an antenna, a digital broadcast signal processor 12 for performing digital broadcast signal processing, an analog signal processor 13 for performing an analog signal processing, and a storage unit 14 for storing received data. And a communication unit 15 provided to transmit the stored data to the outside, an output unit 17 for outputting an analog or digital signal processed broadcast signal, a storage unit 14 for storing the received data, and a stored data externally. A communication unit 15 for transmitting to or communicating with the outside, a display unit 16 for displaying a reception state and an operation state of the analog and digital broadcast composite receiver 10, and a control unit 11 for controlling each component. It is configured to include.

The analog and digital broadcast composite receiver according to the present invention provides an effect of receiving the analog digital broadcast by one receiver at the time when the analog digital broadcast coexists in the transition period from the analog broadcast to the digital broadcast.

Description

Analog and Digital Audio Broadcasting Composition Receiver

The present invention relates to an analog and digital broadcast composite receiver.

More particularly, the present invention relates to an analog and digital broadcast composite receiver configured to selectively receive analog and digital signals, restore and output data of each signal, and further, store and transmit the received data to the outside. .

Currently, the transmission method in a broadcast medium is changing from an analog transmission method to a digital transmission method. Digital radio broadcasting has been proposed in two ways. One is the EUREKA-147 scheme jointly proposed by Pan-Europe and the other is the IN-BAND scheme proposed by the United States. Among the two methods, many countries are currently selecting the new method, EUREKA-147, as their standard and preparing or implementing broadcasting service.

As shown in FIG. 1, the digital broadcasting system includes a broadcast service using terrestrial waves and a service using satellites in a local broadcasting station.

In the satellite broadcasting, a signal is transmitted from a terrestrial digital broadcasting earth station to a satellite for digital broadcasting, and the transmitted signal is received by the satellite and downstream through the L-band.

In the above-described terrestrial broadcasting system, a digital broadcasting station directly outputs a digital broadcast.

Broadcast signals output by these two methods are received by mobile and fixed digital receivers.

According to this preparation process, it takes considerable time for the analog broadcasting system to be completely converted to the digital broadcasting system. Therefore, the period of coexistence of analog broadcasting and digital broadcasting will continue for a long time, and only one broadcasting method can be received during the period of analog broadcasting and digital broadcasting coexisting with a single method, that is, an analog dedicated receiver or a digital dedicated receiver. There is a problem that can not provide simultaneous reception for the two broadcast schemes, that is, analog broadcast and digital broadcast.

An object of the present invention for solving the above problems is to provide an analog and digital broadcast composite receiver capable of complex reception of analog broadcast and digital broadcast.

In another aspect, the present invention is to provide a combined analog and digital broadcast receiver to receive additional services using a radio data system, and to store the received analog and digital broadcast and to transmit to the outside using a portable communication. For other purposes.

1 is a diagram illustrating the concept of digital broadcasting;

2 is a block diagram showing a block of an analog and digital broadcast composite receiver as a preferred embodiment according to the present invention;

3 is a block diagram of a digital signal processor;

4 is a block diagram of an analog signal processor.

Description of the main symbols in the drawings

10: analog and digital broadcast composite receiver

11 control unit 12 digital signal processing unit

13: analog signal processing unit 14: storage unit

15 communication unit 16 display unit

17: output unit

Analog and digital broadcast composite receiver according to the present invention for achieving the above object, the antenna for receiving an external broadcast signal; A digital broadcast signal processor for processing a digital broadcast signal received from the antenna; An analog signal processor configured to process an analog broadcast signal received from the antenna; An output unit for outputting an analog or digital signal processed broadcast signal; A display unit which displays a reception state of a broadcast and an operation state of each component; Determining whether a broadcast signal received from the outside is an analog broadcast signal or a digital broadcast signal, and setting a reception mode according to the determined broadcast signal method, and controlling each component to receive and output a broadcast corresponding to the reception mode. Control unit; A storage unit for storing broadcast information received by a digital broadcast or analog broadcast signal; And a communication unit configured to transmit the received broadcast information or data stored in the storage unit to an external device, wherein the digital or analog broadcast signal received through the antenna is stored in the storage unit and stored in the communication unit. According to a preferred aspect of the present invention, the antenna comprises a digital broadcast reception antenna, an AM broadcast reception antenna, and an FM broadcast reception antenna. The storage unit may be any one of a flash memory, a hard disk, a floppy disk, a DVD, and a CD. In addition, the storage unit may further include a radio data system. Low frequency signals received by the digital broadcasting reception antenna A down converter to convert to; A front end for converting the low frequency signal converted by the down converter into an intermediate frequency; An analog-digital converter for converting the intermediate frequency converted at the front end into a digital signal; A data / audio decoder for decoding data and audio signals in the signal converted by the analog-to-digital converter; and an audio-DA converter for converting the signal decoded by the data / audio decoder into an analog signal for output. In addition, the analog signal processing unit, AM tuner for selecting a desired AM broadcast channel from the AM radio broadcast signal received from the AM antenna; An FM tuner for selecting a desired FM broadcast channel from an FM radio broadcast signal received from the FM antenna; And an AM / FM decoder configured to decode corresponding to each of the AM or FM signals received from either the AM tuner or the FM signal. The analog and digital broadcast composite receiver according to the above-described configuration It can be developed into various types of products such as car audio, portable receiver, pc-card type or embedded card type of broadcasting equipment.

Hereinafter, with reference to the accompanying drawings showing a preferred embodiment of the present invention will be described in more detail the present invention.

2 is a block diagram of an analog and digital broadcast composite receiver as a preferred embodiment of the present invention.

As shown in FIG. 2, the analog and digital broadcast composite receiver 10 according to the present invention includes an antenna, a digital broadcast signal processor 12 performing digital broadcast signal processing, and an analog signal processor performing an analog signal processing ( 13), the storage unit 14 for storing the received data, the communication unit 15 provided to transmit the stored data to the outside, the output unit 17 for outputting a broadcast signal processed analog or digital signal, the received data A storage unit 14 for storing the data, a communication unit 15 for transmitting the stored data to the outside or performing communication with the outside, and a display unit 16 for displaying a reception state and an operation state of the analog and digital broadcast composite receiver 10. And it is configured to include a control unit 11 for controlling each component.

In addition to the above-described configuration, a key input unit for receiving a user's control signal may be further configured.

Each of the above-described components is implemented in the form of a predetermined chip and can be operated by being attached to the substrate for the analog and digital broadcast composite receiver 10 according to the present invention. It is also possible to connect the analog receiver to the digital receiver using a jack or the like as a predetermined connection means.

The above-mentioned antenna has a digital broadcasting antenna, an AM receiving antenna, and an FM receiving antenna, respectively.

The above-described control unit 11 has an automatic channel search function, an automatic channel storage function, a data display function of a received additional service, an RS-232 output function of a received additional data, an alarm function in a non-service area, and an automatic display function of another medium. It displays the search status, additional data, etc. on the front LCD, saves the last channel, and operates the remote controller. In addition, the above-described control unit 11 performs a function of controlling all components of the transmission of a control signal for operating the corresponding component to each component of the analog and digital broadcast composite receiver 10.

The digital signal processor 12 implements a method of receiving a digital broadcast signal in a conventional digital broadcast technique, and an operation process thereof will be described in more detail with reference to FIG. 3, and the analog signal processor 4 is also illustrated in FIG. Reference will be made in more detail below with reference to 4.

The storage unit 14 stores audio and data information desired by a user. A flash memory, a hard disk, a floppy disk, a DVD, or the like may be used as the storage medium.

The communication unit 15 provides a communication interface with the outside in the case of transmitting the broadcast signal received by the analog and digital combined broadcast receiver 10 to the outside, by a wireless transmission function, or RS-232 and various communication interfaces Perform connection with external equipment. Here, the externally connected equipment is a remote controller, a PC, a notebook, a PDA, a mini disc player, a CDR, a cassette recorder, an MP3 player, a cell phone, or an analog and digital broadcast receiver.

In addition, RDS (Radio data system) may be additionally configured to transmit data by superimposing data such as traffic information, stock information, paging, and background music in the FM frequency band.

Referring to the operation of the analog and digital broadcast composite receiver 10 described above is as follows.

The analog or digital broadcast signal is input through the corresponding antenna, respectively, and the digital signal processing unit 12 or the analog signal processing unit 13 performs signal processing according to the preset operation mode to display data on the display unit 16 and simultaneously output the same. The unit 17 outputs audio. In addition, when the user requests, the data may be stored in the storage unit 14 and may be transmitted to other external devices such as a PC or an audio device through the communication unit 15.

The digital broadcast signal performs a data restoration process and an amplification process, a D / A conversion process, and stores the resultant signal in a storage unit or transmits it to the outside through a communication unit, outputs audio through an output unit, and outputs a video signal or a display unit. Output the data signal. The analog broadcast signal is also subjected to processing such as tuning, demodulation, amplification, and the like, and the audio signal is output to the output unit 17 and the video signal or data signal is output through the display unit 16.

FIG. 3 is a block diagram showing the configuration of the digital signal processing unit 12 configured in the analog and digital broadcast composite receiver 10 of FIG.

As shown, the digital signal processor 12 includes a down converter 21, a front end 22, an analog-to-digital converter (hereinafter referred to as an ADC) 23, a data / audio decoder 24, and an audio DA. It comprises a converter 25.

The down converter 21 converts the received high frequency signal into a frequency band that can be processed by the front end 22.

The front end 22 filters the input frequency into the intermediate frequency IF for filtering and decoding. In addition, the front end 22 communicates with the control unit 11 and is set according to the frequency to be received according to the tuner control signal input from the control unit 11. In addition, the signal input from the front end 22 is subjected to OFDM modulation on the signal converted by OFDM modulation, frequency modulation, DQPSK encoding, time interleaving, and Viterbi encoding performed by the transmitter, and error correction is performed. A frequency interleaving signal is recovered, and after decoding the DQPSK coded signal, the interleaving for time is reconstructed in the time deinterleaver and the Viterbi decoder is decoded.

The data / audio decoder 24 decodes channel information and data audio information from the input signal. The channel information decoded in this process is transmitted to the control unit 11 so that the control unit 11 transmits the audio information of the channel designated by the control unit 11 using the channel information through the audio DA converter 24 and the output unit 17. Output

In this process, the data / audio decoder 24, unlike conventional analog methods, decodes the program related data (data such as the title of a broadcast, a title of a song, a singer's name, a news title, and a related picture) to a transmitted signal. The data information signal is transmitted to the control unit so that the information data (data such as traffic situation, stock information, text message, photo, etc.) is transmitted to the user through the control unit 11. In addition to the above-described transmission process, the data / audio decoder 24 transmits channel information to the controller 11 as described above. In addition, the decoder 11 receives the decoder control signal from the controller 11 so as to perform decoding to output a broadcast signal of a channel desired by the user, and transmits and outputs data information of the corresponding channel to the controller.

Next, a digital signal processing process will be described with reference to the above-described description of each component.

When the analog and digital broadcast composite receiver 10 receives a digital broadcast signal, the digital broadcast signal is transmitted to the digital signal processor 12. The transmitted signal is converted into a frequency band that can be processed by the front end 21 by the down converter 21 and input to the front end 21. The frequency converted by the down converter 21 is input to the front end 21, and the frequency signal input to the front end 21 is converted into an intermediate frequency IF for filtering and decoding. The signal converted to the intermediate frequency is bandpass sampled by the ADC 23 and input to the data / audio decoder 8. The data / audio decoder 8 decodes channel information, data, video, and audio information from the input signal, and outputs audio information of the channel designated by the controller through the audio DA converter 21 and the output unit 17. At the same time, the data or video information is decoded and the data information is transmitted to the controller 11 so that the data information is output to the display unit 16.

4 is a block diagram of an analog signal processor 13 configured in the analog and digital broadcast composite receiver 10.

As shown, the analog signal processor 13 includes an AM antenna for AM signals, an AM tuner 31, an FM antenna for receiving FM signals, an FM tuner 32, and an AM / FM decoding the AM / FM signal. The decoder 33 is comprised.

The AM antenna receives an AM broadcast signal.

The AM tuner 31 selects an AM broadcast frequency of a channel to be selected from the received AM broadcast signals.

The FM antenna receives an FM broadcast signal.

The FM tuner 32 selects an FM broadcast frequency of a channel to be selected from the received FM broadcast signals.

The above-described AM / FM decoder 33 decodes the broadcast of the channel selected by the controller and outputs it through the output unit 17.

In order for the above-mentioned analog and digital receiver 10 to receive a broadcast, a user sets a reception mode of an analog broadcast or a digital broadcast in advance or automatically switches to an analog broadcast reception mode or a digital broadcast reception mode in an area where an analog or digital broadcast is received. The control unit 11 controls to stop the operation of the digital signal processing unit 12 when it is set to an analog broadcast reception mode, and the control unit 11 controls the analog signal processing unit (if it is set to a digital broadcast reception mode). 13) to control the analog and digital broadcast composite receiver 10 to stop the operation.

A key input unit may be further configured in the analog digital receiver 10 to receive a user's requirement.

The present invention can receive the analog digital broadcast to a receiver at a time when the analog digital broadcast coexists in the transition period from the analog broadcast to the digital broadcast, the received broadcast is externally wired or wirelessly through the storage device of the terminal It provides an effect that can be transmitted to.

Claims (8)

An antenna for receiving an external broadcast signal; A digital broadcast signal processor for processing a digital broadcast signal received from the antenna; An analog signal processor configured to process an analog broadcast signal received from the antenna; An output unit for outputting an analog or digital signal processed broadcast signal; A display unit which displays a reception state of a broadcast and an operation state of each component; Determining whether a broadcast signal received from the outside is an analog broadcast signal or a digital broadcast signal, and setting a reception mode according to the determined broadcast signal method, and controlling each component to receive and output a broadcast corresponding to the reception mode. Control unit; A storage unit for storing broadcast information received by a digital broadcast or analog broadcast signal; And And a communication unit configured to transmit the received broadcast information or data stored in the storage unit to an external device. And a digital or analog broadcast signal received through the antenna may be stored in the storage unit and transmitted to an external device through the communication unit. The method of claim 1, wherein the antenna, An analog and digital broadcast composite receiver comprising a digital broadcast reception antenna, an AM broadcast reception antenna, and an FM broadcast reception antenna. delete delete The method of claim 1, The storage unit, An analog and digital broadcast composite receiver, characterized in that either flash memory or hard disk or floppy disk or DVD or CD. The method of claim 1, An analog and digital broadcast composite receiver further comprising a radio data system. The method of claim 1, wherein the digital signal processing unit, A down converter for converting a high frequency signal received by the digital broadcasting reception antenna into a low frequency; A front end for converting the low frequency signal converted by the down converter into an intermediate frequency; An analog-digital converter for converting the intermediate frequency converted at the front end into a digital signal; A data / audio decoder for decoding data and audio signals in the signal converted by the analog to digital converter; and And an audio DA converter for converting the signal decoded by the data / audio decoder into an analog signal for output. The method of claim 1, wherein the analog signal processing unit, An AM tuner for selecting a desired AM broadcast channel from an AM radio broadcast signal received from the AM antenna; An FM tuner for selecting a desired FM broadcast channel from an FM radio broadcast signal received from the FM antenna; And an AM / FM decoder configured to decode corresponding to each of an AM or FM signal received from any one of the AM tuner or the FM signal.