KR20080043124A - Digital television having personal computer - Google Patents

Abstract

A DTV having a PC is provided to enable a PC installed within the DTV to control the DTV by recognizing the DTV as a device irrespective of a driving order of the DTV and the PC, thereby enabling the PC to control the DTV always. A display unit(300) receives and displays a video signal. An audio output unit(200) receives and outputs an audio signal. A DTV(Digital Television) board(100) receives a digital broadcasting signal and displays the received digital broadcasting signal through the display unit. A PC(Personal Computer) board(400) uses the display unit and the audio output unit as an output device. A connection unit(190) is installed within the DTV board, and converts a control signal of the PC into a DTV signal system by connecting the DTV board with the PC board. After that, the connection unit transmits the converted signal. In the DTV board, a microprocessor(150) is installed. The microprocessor controls a tuner(120), a demodulator(130) and a TS(Transport Stream) decoder(140) and receives a data signal from the TS decoder before processing the received data signal. In the PC board, a video controller(410) and an audio controller(420) are installed.

Description

Digital television with PC {Digital television having personal computer}

1 is a block diagram showing a digital television equipped with a conventional PC.

2 is a block diagram illustrating a preferred embodiment of the present invention.

3 is a block diagram illustrating another embodiment of the present invention.

4 is a block diagram illustrating another embodiment of the present invention.

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

100: DTV board 110: antenna

120: tuner 130: demodulator

140: TS decoder 150: microprocessor

160: data storage unit 170: audio decoder

180: video decoder 190: connection unit

192: PCI 194: PCI Controller

196: A / V controller 200: audio output

300: display unit 400: PC board

410: video controller 420: audio controller

430: CPU 440: main controller

500: buffer 600: output signal selector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital television, and more particularly, to a digital television having a personal computer (hereinafter referred to as a "PC") therein.

In general, digital broadcasting refers to broadcasting that compresses and transmits a television signal in a digital form in which an information signal is encoded and recorded. Digital television refers to a television receiver that receives and displays the digital broadcasting.

Conventional analog broadcasting (NTSC) has only one video signal in one RF frequency band, and the voice is transmitted through another radio wave. Recently, however, the number of RF channels is much higher than that of conventional analog broadcasts, and it is possible to transmit a plurality of programs in a limited transmission bandwidth of one RF channel.

That is, according to the United States Advanced Television Systerm Committee (ATSC) standard, one sub-channel of up to 6 HD programs and 6 sub-SD programs can be simultaneously broadcast within one RF channel corresponding to one analog channel. It is recommended to be able to.

Therefore, in recent digital broadcasting, a video signal, an audio signal, and a data signal containing other sub information are mixed in one channel to form a stream. And with the development of compression technology, the stream contains more data.

Accordingly, a PC is provided inside a digital television to process data transmitted with the video and audio signals and to utilize the data in various ways.

1 is a block diagram showing a digital television equipped with a conventional PC.

As shown in the drawing, a digital television (hereinafter referred to as 'DTV') having a conventional PC includes a DTV board 1 on which various components for receiving and processing digital signals are mounted. In addition, the audio output unit 3 receives audio output from the DTV board 1 and transmits sound, and a display unit 5 for receiving and displaying an image signal from the DTV board 1.

On the other hand, DTV having a PC according to the prior art is provided with a PC board 7 for performing a PC function, the audio signal and the video signal output from the PC board 7 is the audio output unit 3, respectively. And input to the display unit 5 and output.

Therefore, the PC provided in the DTV having the PC according to the prior art uses the audio output unit 3 and the display unit 5 of the DTV as its output devices.

However, the prior art as described above has the following problems.

That is, the PC provided in the DTV having the conventional PC does not interlock with the DTV, there is a problem that the PC can not control the DTV.

In the prior art, since the PC board 7 and the DTV board 1 are not interlocked, there is a problem in that data information transmitted in digital broadcasting cannot be utilized in various ways.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, it is an object of the present invention to provide a structure of a DTV equipped with a PC having an interface so that the DTV board and the PC interwork with each other.

Another object of the present invention is to provide a structure of a DTV having a PC interface buffer for smooth interworking between the DTV board and the PC, that is, the PC recognizes and controls the DTV as a device.

According to a feature of the present invention for achieving the above object, the present invention includes a display unit for receiving and displaying a video signal; An audio output unit for receiving and outputting an audio signal; A DTV board for receiving a digital broadcast signal and displaying the same through the display unit; A PC board using the display unit and the audio output unit as output devices; And a connection unit provided in the DTV board to connect the DTV board to the PC board to convert and transmit the control signal of the PC to the DTV signal system.

At this time, the connection unit, Local bus for transmitting the control signal of the PC at high speed; A bus controller controlling the operation of the local bus; And an AV controller for converting a signal transmitted by the local bus into a DTV signal system.

The local bus may be a PCI bus, and the bus controller may be a PCI controller.

On the other hand, the DTV board is a tuner for selecting a digital broadcast channel; A demodulator for receiving the digital broadcast signal and generating a data bit string; A TS decoder for separating the bit stream transmitted from the demodulator into sound data, video data and additional data; And a microprocessor for controlling the tuner, demodulator, and TS decoder.

In addition, the PC board includes a video controller for transmitting a video signal; An audio controller for transmitting an audio signal; And a main controller configured to transmit an image signal and an audio signal to the video controller and the audio controller.

On the other hand, the present invention and the display unit for receiving and displaying a video signal; An audio output unit for receiving and outputting an audio signal; A DTV board for receiving a digital broadcast signal and displaying the same through the display unit; A PC board using the display unit and the audio output unit as output devices; A connection unit provided in the DTV board to connect the DTV board to the PC board to convert and transmit the control signal of the PC into a DTV signal system; And a buffer connected to the connection unit to store the DTV information from the DTV board.

In this case, the buffer may store a DTV driver for allowing the PC board to recognize the DTV as a device.

In addition, the present invention receives the audio signal from the audio decoder and the audio controller to the DTV beam to select the audio signal to be output through the audio output unit; The display apparatus may further include an output signal selector that receives an image signal from the video decoder and the video controller and selects an image signal to be displayed through the display.

In this case, the output signal selector may select a signal to be controlled and output by the microprocessor.

According to the present invention having the configuration as described above, there is an advantage that the PC provided in the DTV can recognize and control the DTV as a device.

Hereinafter, a preferred embodiment of a digital television with a PC according to the present invention as described above will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram showing a preferred embodiment of the present invention, Figure 3 is a block diagram showing another embodiment of the present invention, Figure 4 is a block diagram showing another embodiment of the present invention.

These various embodiments of the present invention shown in order to look at in order. In this case, the same elements among the components constituting each embodiment will be described with the same reference numerals.

First, the preferred embodiment of the present invention shown in FIG. 2 includes a digital television (hereinafter referred to as "DTV") board that receives a digital broadcast signal and generates a signal to be output. The DTV board 100 receives the digital broadcast signal, separates the audio signal, the video signal and the data signal, decompresses them, and converts them into outputable signals. It is configured to include an antenna (110). The antenna 110 is connected to a tuner 120 for selecting and synchronizing a channel of a broadcast signal to be received.

The tuner 120 is connected to a demodulator 130 for generating a data bit string from the digital broadcast signal received from the antenna 110. In this case, the bit stream generated by the demodulator 130 includes sound data for an audio (audio) signal, image data for an image signal, and PSI (Program and Systerm Information). Should be included.

On the other hand, the demodulator 130 is connected to a transport stream decoder (hereinafter referred to as a TS decoder) for separating each signal included in the data bit stream. The TS decoder 140 separates sound data, image data, and additional data from the data bit string. Here, the sound data is input to the audio decoder 170 to decompress the sound data, and the image data is input to the video decoder 180.

That is, the DTV board 100 includes an audio decoder 170 which decompresses the sound data and a video decoder 180 which decompresses the image data.

The DTV board 100 includes a microprocessor 150 that controls the tuner 120, the demodulator 130, and the TS decoder 140, and receives and processes the data signal from the TS decoder 140. It is provided.

In addition, the microprocessor 150 stores the additional data and provides the microprocessor 150 with the additional data stored at the request of the user or the request of the microprocessor 150. It is configured to include. The data storage unit 160 stores additional data provided by the digital broadcast, and currently representative additional data includes EPG (Electronic Program Guaid) information. However, as the additional data is gradually diversified, the data stored in the data storage unit 160 of the present invention includes various information, not limited to EPG information.

On the other hand, the DTV board 100 includes a PC to be described later and the DTV board 100 includes an interconnect unit (hereinafter referred to as a "connecting unit").

The connection unit 190 is a part which connects the microprocessor 150 and the main controller 440 of the PC board 400 to be described later, converts the control signal of the PC into a signal suitable for DTV, and transmits the signal.

As shown in the drawing, the connection unit includes a local bus that transmits a control signal of a PC, a bus controller that controls the local bus, and an AV controller 196 that converts a control signal of a PC into a control signal format of a DTV. do.

In this case, preferably, a PCI 192 (Pheripheral Component Interconnect) is used as the local bus, and thus a PCI controller is used as the bus controller. Of course, the local bus may use various types of local buses (eg, PCI Express, AGP, etc.).

The preferred embodiment of the present invention includes an audio output unit 200 for receiving and outputting the decompressed audio signal from the audio decoder 170. The audio output unit 200 generally includes a speaker and may include a multi-channel speaker device.

In addition, the preferred embodiment of the present invention includes a display unit 300 for receiving and displaying the decompressed video signal from the video decoder 180. The display unit 300 is generally composed of a PDP or LCD, but other display devices may be used.

On the other hand, DTV according to a preferred embodiment of the present invention is configured to include a PC board 400 for implementing a personal computer (hereinafter referred to as "PC"). The PC board 400 corresponds to a main board provided in a general PC and includes a CPU 430 and other mounting parts.

The main board includes a video controller 410 and an audio controller 420. The video and audio controllers 410 and 420 generally include a sound card and a graphics card provided on the main board.

In this case, the video controller 410 receives an image signal from the main controller 440 connected to the CPU 430 through the PCI 450 bus.

On the other hand, the main controller 440 is provided with a memory 460 for storing various data and programs of the PC.

In addition, an input / output controller 470 is connected to the main controller 440. The input / output controller 470 controls a sound signal transmitted to the audio controller 420 and receives a signal input from an external device 480. The part controlling the signal output to the device 480.

At this time, the main controller 440 is connected to the connection unit 190 provided in the DTV board 100 and transmits a control signal to the connection unit 190 through the PCI (192) bus.

Meanwhile, according to another exemplary embodiment of the present invention as shown in FIG. 3, a buffer 500 may be provided between the connection unit 190 and the PC board 400.

The buffer 500 temporarily stores information on the DTV board 100 while the DTV board 100 is in operation, and provides the stored information to the PC board 400. The buffer 500 stores information about the DTV board 100, which is generally referred to as a driver. The buffer 500 is a part that enables the PC to recognize the information of the buffer 500 to recognize and control the DTV board 100 as a device.

On the other hand, another embodiment of the present invention as shown in Figure 4 is configured to further include an output signal selection unit 600 in the configuration of another embodiment of the present invention. The output signal selector 600 selects an output signal to be actually output from a plurality of inputs.

The output signal selector 600 receives audio signals from the audio decoder 170 and the audio controller 420, respectively, and selects an audio signal to be output through the audio output unit 200. In addition, the output signal selector 600 receives an image signal from the video decoder 180 and the video controller 410, respectively, and selects an image signal to be displayed through the display unit.

That is, the output signal selector receives all signals including an audio signal and a video signal and selects a signal to be actually output.

At this time, the output signal selector 600 is a part for determining whether to display by the control of the microprocessor 150, the microprocessor 150 is the CPU 430 through the connection unit 190 Take control.

Hereinafter, the operation of the digital television with a PC according to the present invention will be described in detail according to the operation procedure.

In the case of a television equipped with a PC according to a preferred embodiment of the present invention, when the PC is turned on and the DTV board 100 is turned on later, the CPU 430 transmits information of the DTV board 100 through the main controller 440. It recognizes and recognizes the DTV board 100 as a device of the PC. Accordingly, the CPU 430 may control the microprocessor 150 of the DTV board 100 by transmitting a control signal through the connection unit 190.

When a digital broadcast signal is received through the antenna 110 in the DTV board 100 through a channel synchronized through the tuner 120 in the DTV board 100, a data bit string is generated through the demodulator 130. do.

The generated data bit stream is input to the TS decoder 140 to separate sound data, image data, and additional data included in the data bit stream, thereby respectively audio decoder 170, video decoder 180, and microprocessor 150. Is delivered. Thereafter, the sound data is output to the audio output unit 200, the image data is output through the display unit 300, and the additional data is stored to the data storage unit 160.

However, in this case, when the CPU 430 determines that the output of the PC board 400 is prioritized, the CPU 430 controls the microprocessor 150 to generate sound and video signals from the broadcast signal. Stop. And the audio signal and the video signal output from the PC board 400 is controlled to be output.

However, the DTV interface 440 does not provide a PLUG & PLAY function. Therefore, when the PC board 400 is turned on while the DTV board 100 is turned on, the CPU 430 of the PC board 400 does not recognize the DTV as a device. Therefore, in order for the PC board 400 to recognize the DTV as a device, the PC board 400 should reboot the DTV board 100 or reset the DTV interface 440 to perform the PLUG & PALY function.

On the other hand, according to another embodiment of the present invention, the connection unit 190 of the DTV board 100 and the main controller 440 of the PC board 400 is connected by a PCI buffer (hereinafter referred to as a "buffer") do. The buffer 500 is a storage space for storing the DTV information. The CPU 430 of the PC board 400 reads the information stored in the buffer 500 so that the PC recognizes and controls the DTV as a device. . In this case, the DTV information includes a driver for installing the DTV as a device device.

Accordingly, even when the PC is driven while the DTV is turned on, the PC reads the DTV information stored in the buffer 500 and recognizes the DTV as a device device.

Therefore, the PC controls the DTV board 100, and the CPU 430 of the PC board 400 outputs the audio output unit 200 and the display unit 300 through the microprocessor 150. You will be able to select and control the signal to be.

When the PC recognizes the DTV as a device, the PC may read a variety of information received during digital broadcasting, including EPG information, from the data storage unit 160 included in the DTV board 100 and process the information in various ways. That is, the PC may be connected to the Internet to receive more information related to the information and notify the user, or to perform a command that the user wants to perform with respect to the program information.

On the other hand, according to another embodiment of the present invention, as shown in Figure 4, all the signals to be output from the audio output unit 200 or the display unit 300 to the output signal selector 600, and The output signal selector 600 is configured to select a signal to be actually output by the control of the CPU 430 or the microprocessor 150 of the PC board 400.

That is, since the microprocessor 150 is controlled by the CPU 430 when the PC board 400 is driven, the output signal selector 600 is operated by the control of the CPU 430. . However, when the PC board 400 is not being driven, the output signal selector 600 is controlled by the microprocessor 150.

In another exemplary embodiment of the present invention, the output signal selector 600 is described as an example in which the DTV board 100 is embedded, but the output signal selector 600 is provided in the PC board 400. Alternatively, the DTV board 100 and the PC board 400 may be provided with a separate output signal selector 600.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

In the digital television with a PC according to the present invention as described in detail above, the following effects can be expected.

That is, there is an advantage that the PC provided inside the DTV can recognize and control the DTV as a device.

And the present invention has the advantage that the PC can always control the DTV regardless of the driving order of the DTV and the PC.

In addition, in the present invention, since the DTV is controlled by the PC, collision of the output signal can be prevented, and there is a long way for the PC to freely use data received during digital broadcasting. For example, the PC has an advantage of extending the range of use of the data using the Internet.

Claims (13)

A display unit which receives and displays an image signal; An audio output unit for receiving and outputting an audio signal; A DTV board for receiving a digital broadcast signal and displaying the same through the display unit; A PC board using the display unit and the audio output unit as output devices; And And a connection unit provided in the DTV board to connect the DTV board to the PC board to convert and transmit the control signal of the PC into a DTV signal system. The method of claim 1, The connection unit, A local bus transferring the control signal of the PC at high speed; A bus controller controlling the operation of the local bus; And And an AV controller for converting a signal transmitted by the local bus into a DTV signal system. The method of claim 2, The local bus is a PCI bus, And said bus controller is a PCI controller. The method according to any one of claims 1 to 3, The DTV board, A tuner for selecting a digital broadcast channel; A demodulator for receiving the digital broadcast signal and generating a data bit string; A TS decoder for separating the bit stream transmitted from the demodulator into sound data, video data, and additional data; And a microprocessor for controlling said tuner, demodulator and TS decoder. The method of claim 4, wherein The PC board, A video controller for transmitting an image signal; An audio controller for transmitting an audio signal; And And a main controller for transmitting a video signal and an audio signal to the video controller and the audio controller. A display unit which receives and displays an image signal; An audio output unit for receiving and outputting an audio signal; A DTV board for receiving a digital broadcast signal and displaying the same through the display unit; A PC board using the display unit and the audio output unit as output devices; A connection unit provided in the DTV board to connect the DTV board to the PC board to convert and transmit the control signal of the PC into a DTV signal system; And And a buffer connected to the connection unit, the buffer storing the DTV information from the DTV board. The method of claim 6, In the buffer, And a DTV driver for allowing the PC board to recognize the DTV as a device. The method according to claim 6 or 7, The connection unit, A local bus transferring the control signal of the PC at high speed; A bus controller controlling the operation of the local bus; And And an AV controller for converting a signal transmitted by the local bus into a DTV signal system. The method of claim 8, The local bus is a PCI bus, And said bus controller is a PCI controller. The method of claim 9, The DTV board, A tuner for selecting a digital broadcast channel; A demodulator for receiving the digital broadcast signal and generating a data bit string; A TS decoder for separating the bit stream transmitted from the demodulator into sound data, video data and additional data; A microprocessor controlling the tuner, demodulator and TS decoder; An audio decoder which receives the acoustic data from the TS decoder and decompresses it; A video decoder configured to receive video data from the TS decoder and decompress the video data; And said connection unit is connected to said microprocessor. The method of claim 10, The PC board, A video controller for transmitting an image signal; An audio controller for transmitting an audio signal; And And a main controller for transmitting a video signal and an audio signal to the video controller and the audio controller. The method of claim 11, The DTV board, Receiving an audio signal from the audio decoder and an audio controller and selecting an audio signal to be output through the audio output unit; And an output signal selection unit for receiving an image signal from the video decoder and the video controller and selecting the image signal to be displayed through the display unit. The method of claim 12, The output signal selector, And a signal to be controlled and output by the microprocessor.

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