KR100677191B1 - Digital tv receiving apparatus for portable computer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital TV receiver for a portable computer. In the related art, since the interface method is a PCI system, the present invention is not applied to a portable PC and is almost limited to a desktop PC. Accordingly, the present invention provides a tuner for tuning a signal received from a broadcasting network and outputting only a signal of a desired channel; A filter for receiving a signal from the tuner and filtering the signal; A demodulator for receiving the filtering signal of the filter and demodulating the filtered signal to output a digital signal; A decoder which receives an output signal of the demodulator and decodes it and outputs it as a stream for video, audio and additional information; A decoder which decodes the video and audio streams of the decoder and outputs a video / audio signal corresponding thereto, and decodes additional information of the decoder and outputs an address / data according thereto; A PDL providing a transmission path for outputting a command and data from a host to the decoding unit, or a transmission path for outputting the output signal of the decoding unit to the host; By including the interface unit for the interface between the PDL and the host by adding the PCMCIA interface function to the digital TV receiver can be applied to products such as personal PCs and portable PCs to improve the mobility.

Description

DIGITAL TV RECEIVING APPARATUS FOR PORTABLE COMPUTER

1 is a schematic diagram showing the configuration of a digital TV having a general PCI interface.

2 is a digital TV receiver for a portable computer of the present invention.

Fig. 3 is a block diagram showing the structure of PDL in Fig. 2;

4 shows a data input / output transmission path from a host to a digital receiving module in FIG.

FIG. 5 is a diagram showing a transmission path when a digital receiving module outputs video and audio on a selected channel in FIG. 2; FIG.

***** Description of the symbols for the main parts of the drawings *****

1: VSB tuner 2: SAW filter

3: Demodulator 4: VSB decoder

5: MPEG2 decoding unit 100: Peldy

200: PCMCIA connector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital TV receiver for a portable computer, and more particularly, to a digital TV receiver for allowing a personal computer or a portable PC to receive the digital TV through a PCMCIA interface.

In 1997, the US FCC adopted the Advanced Television System Committee (ATSC) standard, which opened a wide market in the digital video age of the 21st century. With the advent of the digital broadcasting era, various storage media have emerged. Until now, DVD (Digital) Video Disc) is a medium widely known to the general user, and the Digital Video Cassette Record (DVCR) is at some stage of realization.

In addition, digital TVs can process more data than conventional analog TVs can handle, and because of the efficient use of bandwidth, many channels are available to receive broadcasts. It provides sound quality, and many applications and peripherals are added to provide various additional services such as home shopping, electronic newspaper, and stock information.

Such a digital TV may be connected to a digital broadcast receiver through a line outside a conventional TV for PAL / NTSC, such as a set-top box for receiving a satellite broadcast, or may be configured by being embedded in the TV itself.

On the other hand, recent users have been familiar with high-definition and high-resolution graphic screens due to the development of multimedia technology, so the system such as digital TV or Internet TV has felt the necessity of satisfying users' needs using multimedia technology.

Accordingly, digital broadcasting receivers can be used to download multimedia content written in HTML (Hyper Text Makeup Language) or other scripting languages through channels such as broadcast networks or modems.

At this time, the service provider providing the multimedia contents can be broadly classified into a broadcaster using an existing broadcasting network and an interactive service provider using a back channel such as a modem.

The multimedia contents produced by such service providers are usually provided with the multimedia contents service from the interactive service server using the private section of the MPEG-2 stream or using the DSM-CC protocol.

In addition, as an application for receiving the digital TV broadcast as described above, there is a digital TV add-on card having a PCI interface as shown in FIG. 1. As shown, since the interface method is PCI, it is almost limited to the desktop PC. .

That is, the system unit initializes the digital TV receiver through the PCI bus, and then the digital TV receiver converts the signal received by the antenna into audio and video data after decoding and converts the video data and the audio data into respective ones. Audio and video logic play through the screen and speakers.

That is, as described above, since the interface method is a PCI method, the portability is not applied to the portable PC and is almost limited to the desktop PC. Therefore, there is a problem that mobility is reduced.

Accordingly, an object of the present invention is to provide a digital TV receiver for a portable computer that can receive a digital TV through a PCMCIA interface in a personal PC or a portable PC.

The present invention for achieving the above object is a tuner for outputting only the signal of the desired channel by tuning the signal received from the broadcast network; A filter for receiving a signal from the tuner and filtering the signal; A demodulator for receiving the filtering signal of the filter and demodulating the filtered signal to output a digital signal; A decoder which receives an output signal of the demodulator and decodes it and outputs it as a stream for video, audio and additional information; A decoder which decodes the video and audio streams of the decoder and outputs a video / audio signal corresponding thereto, and decodes additional information of the decoder and outputs an address / data according thereto; A PDL providing a transmission path for outputting a command and data from a host to the decoding unit, or a transmission path for outputting the output signal of the decoding unit to the host; Characterized in that it comprises an interface unit for the interface between the PDL and the host.

Hereinafter, operations and effects of the digital TV receiver for a portable computer according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a block diagram showing an embodiment of a digital TV receiver for a portable computer according to the present invention. As shown in FIG. 3, a VSB tuner unit 1 which outputs only a signal of a desired channel by tuning a signal received from a broadcasting network is shown in FIG. Wow; A SAW filter (2) for receiving a signal from the VSB tuner unit (1) and saw-filtering it; A demodulator (3) which receives the filtering signal of the SAW filter (1) and demodulates it and outputs a digital signal; A VSB decoder (4) for receiving the output signal of the demodulator (3) and decoding it and outputting it as a stream for video, audio and additional information; An MPEG2 decoder (5) for decoding the video and audio streams of the VSB decoder (4) to output video / audio signals according to them, and to decode additional information and to output corresponding addresses / data; PDL 100 for providing a transmission path for outputting commands and data from the host to the MPEG2 decoding unit 5, or for providing a transmission path for outputting the output signal of the MPEG2 decoding unit 5 and the host; ; It consists of a PCMCIA connector 200 for interfacing the signal with the host.

3 is a block diagram showing the configuration of the PD, an address decoder for receiving a system address (System address) and system data (Control) from the host as shown in the figure and decoding it and outputs a drive control signal accordingly; A control unit 101; The first and second drivers 102 and 103 which receive the drive control signal of the address decoder and the controller 101 and are exclusively activated according to the input control will be described.

First, when a desired channel control signal (Control) is received from the host, the VSB tuner 1 tunes a signal received from a broadcasting network to output only a signal of a desired channel, and the SAW filter 2 outputs the VSB tuner 1. Receives a signal from) and filters it and outputs it.

Then, the demodulator 3 receives the filtering signal of the SAW filter 2, demodulates it, and outputs a digital signal. The VSB decoder 4 receives the output signal of the demodulator 3, decodes it, and then decodes it. And output as a stream for additional information.

Thereafter, the MPEG2 decoder 5 decodes the video and audio streams of the VSB decoder 4, outputs the video / audio signals VD (0: 7), Audio, and decodes additional information. Outputs the address / data (ADDR / DATA) accordingly.

In this case, the PDL 100 initially provides the transmission path as shown in FIG. 4 to output the output signals VD (0: 7), Audio, and ADDR / DATA of the MPEG2 decoding unit 5 to the host. In this case, the PDL 100 has one address from the host side, and the first and second driving units 102 according to the system address and the system data that designate the PDL 100. , 103 is driven exclusively.

That is, the address decoder and the controller 101 receive a system address (System address) and system data (Control / Read) from the host, decode the received address, and apply a driving control signal according to the second driver 103, As a result, the second driving unit 102 is activated to output the output signal of the MPEG2 decoding unit 5 to the host side.

 On the contrary, when transmitting data from the host to the MPEG2 decoding unit 5 as shown in FIG. 4, the address decoder and the controller 101 receive a system address and system data from the host, decode the received system address, and accordingly. The drive control signal is applied to the first driver 102, whereby the first driver 102 is activated to transmit the output signal of the host side to the MPEG2 decoder 5.

In more detail, when the present invention is described, the PDL 100 has one address when viewed from the host, and the PDL 100 is assigned according to the system address and system data designated by the PDL 100. The first and second drivers 102 and 103 are exclusively active.

If the first drive unit 102 is activated by the address decoder and the control unit 101, a transmission path for accessing the digital receiving module from the host side is formed, and at this time, initialization of the digital receiving module (register value setting, channel) is performed. Selection) is made.

On the contrary, when the second driver 103 is activated by the address decoder and the controller 101, a transmission path through which the video / audio data (VD (0: 7), Audio) restored by the digital receiving module is transmitted is made. As a result, video / audio data VD (0: 7) and audio are transmitted to the host side via the PCMCIA connector 200 as shown in FIG.

Thereafter, each video / audio data (VD (0: 7), Audio) in the host system is subjected to predetermined processing in the image processing logic and the audio processing logic, respectively, and reproduced.

Herein, the operation of the address decoder and the controller 101 will be described in detail. The chip select signal for the MPEG2 decoder 5 is generated according to the read / write signal (Control) and the address (System address) of the host system. By controlling the data direction of the first driver 102, read / write of a register can be executed, and the read / write signal (Control) and address (System address) of the host system can be used. 2 Drive unit 103 is turned on / off.

In this case, if the read command is accessed when accessing the digital receiving module, data is transmitted from the digital receiving module to the host, and the address is transmitted from the host to the digital receiving module. And address are both transmitted from the host side to the digital receiving module.

Here, the PCMCIA connector 200 is a connection element for interfacing the host and the digital receiving module.

As described in detail above, the present invention has an effect of improving mobility by adding PCMCIA interface function to a digital TV receiver so that it can be applied to products such as personal PCs and portable PCs.

Claims (6)

A tuner for tuning a signal received from a broadcasting network and outputting only a signal of a desired channel; A filter for receiving a signal from the tuner and filtering the signal; A demodulator for receiving the filtering signal of the filter and demodulating the filtered signal to output a digital signal; A decoder which receives an output signal of the demodulator and decodes it and outputs it as a stream for video, audio and additional information; A decoder which decodes the video and audio streams of the decoder and outputs a video / audio signal corresponding thereto, and decodes additional information of the decoder and outputs an address / data according thereto; A PDL providing a transmission path for outputting a command and data from a host to the decoding unit, or a transmission path for outputting the output signal of the decoding unit to the host; Digital receiver for a portable computer, characterized in that it comprises an interface unit for the interface between the PDL and the host. 2. The apparatus of claim 1, wherein the PDL comprises: an address decoder and a controller which receives a system address and system data from the host, decodes the system address, and outputs a driving control signal according thereto; And a first driving unit and a second driving unit which are exclusively activated according to the driving control signals of the address decoder and the control unit. The digital receiver of claim 2, wherein the first driver forms a transmission path that is activated by the address decoder and the controller to access a digital receiving module from a host side. 4. The digital TV of claim 3, wherein the data is transmitted from the digital receiving module to the host and the address is transmitted from the host to the digital receiving module. Receiver. 4. The digital receiving apparatus for a portable computer according to claim 3, wherein if the digital receiving module accesses a write command, both data and address are transmitted from the host side to the digital receiving module. The digital drive of claim 2, wherein the second driver forms a transmission path through which the image data and audio data restored by the digital receiving module are activated by the address decoder and the control unit and are transmitted to the host. TV receiver.

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