KR20020014555A - Method and apparatus for storing information of digital TV - Google Patents

Abstract

PURPOSE: A device and a method for storing data of a digital TV are provided to offer a great amount of written information as well as video information to users by storing the written information written down or captured on a PIP(Picture In Picture) and by a user in a separate memory. CONSTITUTION: A data storing device of a digital TV comprises a first memory(190) storing the video data captured by a user, a second memory(200) storing the written data captured by the user, and a control unit(180) respectively storing video data and written data in the first and second memories and displaying desired video or written data on a screen by searching the first or second memory. The data storing method comprises the steps of storing the video data in the first memory, displaying a PIP on a screen without video data, deciding the selection of note-taking function, storing the written data directly written down on the PIP via a remote control(210), storing the written data captured from the PIP in the second memory, and displaying video or written data desired by the user on the screen.

Description

Method and apparatus for storing information of digital TV

The present invention relates to a digital TV, and more particularly, to an information storage device and method of a digital TV.

In general, in the case of TV broadcasting, only the public broadcasting was broadcasted, but as cable cable and satellite broadcasting become more common, many broadcasting programs are broadcast from various broadcasting stations.

In the case of cable broadcasting, about 50 channels are used to broadcast various programs.

On the other hand, if digital TV broadcasting is broadcast in earnest, more broadcast programs are expected to be broadcast.

Among these various broadcasting programs, competitive products provided by shopping channels may be introduced at low cost, and information on broadening common sense may be often provided in culture or educational broadcasting channels.

In this case, when there is necessary information among the information broadcasted on a general TV broadcasting channel, the user may obtain necessary information by preparing and recording a recording medium such as a video to store the information.

Hereinafter, an information storage device of a digital TV according to the prior art will be described with reference to the accompanying drawings.

1 is a view showing the configuration of an information storage device of a digital TV according to the prior art.

As shown in FIG. 1, an information storage device of a digital TV according to the prior art receives an antenna 10 and a broadcast signal received by the antenna 10, and tunes a broadcast signal according to a channel selection of a user. A tuner and demodulator 11 for demodulating the tuned broadcast signal into a predetermined signal and a signal demodulated by the tuner and demodulator 11 into a predetermined signal are demultiplexed, that is, into a predetermined audio signal, a video signal, and a data signal. A demux 12 for separation, a voice decoder 13 for receiving a predetermined voice signal separated from the demux 12, decompressing the input voice signal and decoding the original voice signal into an original signal, and the voice decoder An audio output unit 14 for outputting the decoded signal at 13 and a video decoder for receiving a predetermined video signal separated from the demux 12 and decompressing the corresponding video signal to decode the original signal. 15, the video An image processing unit 16 for performing image processing so that the image signal decoded by the decoder 15 can be displayed on the screen, and an image output unit 17 for outputting a predetermined signal processed by the image processing unit 16 on the screen. The data signal separated from the demux 12 may be processed and output on a screen if necessary or when the user selects a video signal displayed on the screen through the remote controller 20, the corresponding video may be stopped and the memory 19 And a control unit 18 for controlling each unit of the system.

Referring to the operation of the information storage device of the digital TV according to the prior art configured as described above in detail.

As shown in FIG. 1, the tuner and demodulator 11 receives a broadcast signal received through the antenna 10, tunes a broadcast signal corresponding to a user's channel selection, and demodulates the tuned broadcast signal. Output to mux 12.

Subsequently, the demux 12 receives a signal output from the tuner and the demodulator 11, and demultiplexes the voice signal 13 and the video decoder 15 into a predetermined voice signal, a video signal, and a data signal. ) And control unit 18 respectively.

The voice decoder 13 receives a predetermined voice signal separated from the demux 12 and decompresses the input voice signal to decode the original signal.

Subsequently, the voice output unit 14 receives a predetermined voice signal decoded by the voice decoder 13 and outputs the voice signal for the user to listen to.

The video decoder 15 receives a predetermined video signal separated from the demux 12, decompresses the input video signal, decodes the original video signal, and transmits the decoded video signal to the image processor 16.

The image processor 16 performs image processing so that the image signal decoded by the image decoder 15 can be displayed on the screen, and transmits the corresponding signal to the image output unit 17.

Subsequently, the image output unit 17 receives the image processed signal from the image processor 16 and displays the image on the screen for the user to see.

The controller 18 receives the data signal separated from the demux 12, processes the data signal, stores the data signal in the memory 19, and stores data corresponding to a function selected by the user through the remote controller 20. The image processing unit 16 is controlled to read from 19 and output it on the screen.

In addition, when the user selects the video signal displayed on the screen using the remote controller 20, the controller 18 stops the video signal selected by the user to capture a still image of one frame, and the corresponding capture Stored images are stored in the memory 19.

When the user selects an image output stored in the memory 19 through the remote controller 20, the controller 18 reads the corresponding image stored in the memory 19 and outputs the image to the image processor 16. .

In this case, the image processing unit 16 receives an image output from the control unit 18 and processes the image to be displayed on the screen.

The image output unit 17 receives a signal processed by the image processor 16 and displays it on the screen.

The information storage device of the digital TV according to the related art described above has the following problems.

First, when trying to store information that is being broadcast in a general TV, it is cumbersome to prepare a recording medium such as a video.

Second, the conventional digital TV needs to store a large amount of memory by storing image information on the air.

Therefore, the present invention has been made to solve the above problems, by having a memory for storing the character information by storing the character information and the character information captured by the user directly on the sub-screen in the memory It is an object of the present invention to provide a digital TV information storage device and method for providing a user with a larger amount of text information as well as image information.

1 is a block diagram showing a configuration of an information storage device of a digital TV according to the prior art.

2 is a block diagram showing the configuration of an information storage device of a digital TV according to the present invention.

3 is a diagram showing the structure of a transport packet stream in a digital TV information storage device according to the present invention;

4 is a flowchart illustrating a method of storing information of a digital TV according to the present invention.

Explanation of symbols for main parts of the drawings

100 antenna 110 tuner and demodulator

120: Demux 130: voice decoder

140: audio output unit 150: video decoder

160: image processing unit 170: image output unit

180: control unit 190: first memory

200: second memory 210: remote control

Digital TV information storage device according to the present invention for achieving the above object is a digital TV capable of capturing image and text information displayed on the screen through a remote control, for storing the image information captured by the user A first memory, a second memory for storing character information captured by the user, and image and character information in the first and second memories, respectively, according to a user's request, and a first or And a controller for searching for the second memory and controlling the desired image or text information to be displayed on the screen.

According to an aspect of the present invention, there is provided a method of storing information of a digital TV, in a digital TV having a first memory for storing image information and a second memory for storing character information. Storing in the first memory; and if the image information is not input from the information captured by the user, displaying a sub-screen on the digital TV screen; and when the user selects a memo function on the sub-screen, the user hatches. Storing the character information directly written on the surface in the second memory; and if the user wants to output the information stored in the first or second memory, the information stored in the first or second memory is retrieved and displayed on the screen. It is characterized by including the steps.

Hereinafter, an information storage device and method of a digital TV according to the present invention will be described with reference to the accompanying drawings.

Figure 2 is a block diagram showing the configuration of the information storage device of the digital TV according to the present invention, Figure 3 is a view showing the structure of the transport packet stream in the information storage device of the digital TV according to the present invention, Figure 4 Is a flow chart showing the information storage method of the digital TV according to.

Digital information storage device according to the present invention is a digital TV capable of capturing image and text information displayed on the screen through a remote control, as shown in Figure 2, for storing the image information captured by the user A first memory 190, a second memory 200 for storing text information captured by a user, and image and text information according to a user's request, the first and second memories 190 and 200; And a controller 180 for controlling the first or second memories 190 and 200 to be displayed on the screen by searching the first or second memories 190 and 200 according to a user's request.

The digital TV information storage device includes an antenna 100, a tuner for receiving a broadcast signal received by the antenna 100, tuning a broadcast signal according to a user's channel selection, and demodulating the tuned corresponding broadcast signal; A demodulator 110, a demux 120 that receives the demodulated signal from the tuner and the demodulator 110 and demultiplexes it into a predetermined audio signal, a video signal, and a data signal, and the demux ( A voice decoder 130 that receives a predetermined voice signal separated from the decoder 120, decompresses the corresponding voice signal, decodes the original signal, and transmits the decoded signal to the voice output unit 140 so that a user can listen to the voice signal; A video decoder 150 that receives a predetermined video signal separated by the demux 120 and decompresses and decodes the video signal, and displays a predetermined signal decoded by the video decoder 150 on a screen. And an image output unit 170 for displaying a signal processed by the image processor 160 on the screen.

Referring to the operation of the information storage device of the digital TV according to the present invention configured as described above in detail.

As shown in FIG. 2, the tuner and demodulator 110 receives a predetermined broadcast signal received through the antenna 100, tunes a broadcast signal according to a user's channel selection, and demodulates the tuned broadcast signal. Transmit to Demux 120.

Subsequently, the demux 120 receives the demodulated signal from the tuning and demodulation unit 110, and demultiplexes the voice signal 130 into a predetermined audio signal, a video signal, and a data signal. The image decoder 150 transmits the data to the controller 180.

Here, referring to FIG. 3, a signal transmitted from the demux 120, that is, a transport packet stream structure, the transport packet stream transmitted from a broadcasting station includes a head part and a PES (packet) in units of 188 bytes. elementary stream, wherein the PES comprises a packet header, a video stream, an audio stream, and a data stream.

Among them, a data stream is composed of a data stream header and data.

Subsequently, the voice decoder 130 receives a predetermined voice signal separated from the demux 120, decompresses the input voice signal, decodes the audio signal to be heard by the user, and transmits the decoded voice signal to the voice output unit 140. .

The voice output unit 140 outputs the voice signal output from the voice decoder 130 so that a user can listen to the voice signal.

On the other hand, the video decoder 150 receives a predetermined video signal separated from the demux 120, decompresses and decodes the video signal.

The image processor 160 receives the signal decoded by the image decoder 150, processes the image to be displayed on the screen, and transmits the image to the image output unit 170. The image output unit 170 transmits the image processor. In step 160, the image processed signal is received and output on the screen for the user to see.

In addition, the controller 180 receives and stores a predetermined data signal separated from the demux 120, and transmits the predetermined data signal to the image processor 160 to be output on the screen as necessary.

In this case, when information, which is determined to be important during broadcasting, is displayed on the screen, the user captures the corresponding information by using the remote controller 210.

At this time, when the user captures a video signal displayed on the screen using the remote controller 210, the controller 180 controls the image processor 160 to stop the video signal, and to stop the video signal. One frame is stored in the first memory 190.

On the other hand, if the image information is not input from the information captured by the user, the controller 180 controls the image processor 160 to display a sub-screen, that is, a POP (Picture Out Picture) screen on the screen.

The user selects a memo function by using the remote controller 210 and then directly writes text information on the sub-screen.

Subsequently, when text information is created by the user, the controller 180 stores the memo in the second memory 200.

In addition, if the user does not select the memo function through the remote controller 210, the controller 180 receives the information corresponding to the text information captured on the screen by the user from the demux 120 and the second Stored in the memory 200.

If the user wants to output image or text information stored in the first memory 190 or the second memory 200, respectively, the controller 180 is stored in the first or second memory 190, 200. The image information or text information is read and transmitted to the image processing unit 160, and the image processing unit 160 performs a predetermined process and outputs the image information to the image output unit 170.

Subsequently, the image output unit 170 may output corresponding information on the screen, and the user may obtain desired information by referring to the corresponding information displayed on the screen.

The information storage method of the digital TV according to the present invention configured as described above will be described with reference to FIG. 4.

First, the predetermined information captured by the user is input (S100).

It is determined whether the input predetermined information is image information (S110).

As a result of the determination (S110), if the input predetermined information is image information, the image information is stored in the first memory 190 (S120).

On the other hand, if the image information is not input from the inputted predetermined information (S110), the sub-screen, that is, POP screen is displayed on the screen (S130).

Subsequently, it is determined whether a memo function is selected by the user on the sub-screen (S140).

When the memo function is selected by the user on the sub screen as a result of the determination (S140), the user stores the character information directly written on the sub screen using the remote controller 210 in the second memory 200. (S150-S170).

On the other hand, if the memo function is not selected by the user on the sub-screen, the determination result (S140), the demux 120 receives information corresponding to the character information captured by the user on the screen through the remote controller 210. The data is received from the separated data information and stored in the second memory 200 (S160-S170).

Subsequently, it is determined whether the user wants to output image information or text information stored in the first or second memory 190 or 200 (S180).

As a result of the determination (S180), when the user wants to output the image information or the character information stored in the first or second memory 190 or 200, the information stored in the first or second memory 190 or 200 may be changed. The search and display on the screen for the user to see (S190).

As described above, the digital TV information storage apparatus and method according to the present invention may include a memory for storing text information to provide a greater amount of information to the user.

As described above, the digital TV information storage device and method according to the present invention are as follows.

First, a memory for storing text information is provided to store text information directly written on a sub-screen and text information captured by the user in the memory, thereby not only providing image information but also a larger amount of text information. Can provide.

Second, the memory for storing character information is economical because it can store a lot of information with a small capacity.

Claims (5)

In the digital TV capable of capturing image and text information displayed on the screen through the remote control, A first memory for storing image information captured by a user; A second memory for storing character information captured by the user; And, Storing image and text information in the first and second memories according to a user's request, and searching for the first or second memory according to a user's request and controlling the desired image or text information to be displayed on the screen. Digital TV information storage device, characterized in that it comprises a control unit. The method of claim 1, And the second memory further stores text information directly written on a sub-screen by a user using the remote controller. The method of claim 2, The sub-screen is a digital TV information storage device, characterized in that the POP (Picture Out Picture) screen. In a digital TV having a first memory for storing image information and a second memory for storing character information, Storing image information captured by a user in the first memory; If the image information is not input from the information captured by the user, displaying a sub-screen on the digital TV screen; If the user selects a memo function on the sub-screen, storing text information directly written on the sub-screen by the user in the second memory; And, If the user wants to output the information stored in the first or second memory, the method comprising the step of retrieving the information stored in the first or second memory to display on the screen; . The method of claim 4, wherein And if the user does not select a memo function on the sub-screen, storing the character information captured by the user on the digital TV screen in a second memory.