KR100442674B1 - A digital set-top box which realize an analog tv data and combinate a digital video disk player and an analog tv data realizing method using the digital set-top box - Google Patents

Abstract

The present invention relates to a digital set-top box implementing analog TV data and combining a DVD player and a method for implementing analog TV data using the same. The present invention provides an analog input unit for receiving analog audio / video signals from the outside and converting them into digital audio / video signals; A DVD player which reads data from at least one recording medium storing digital audio / video signals and plays the data through the display apparatus; The digital audio / video signals and digital data streams received from the analog input unit and the DVD player are processed and reproduced through the display device, or the processed digital audio / video signals and digital streams are stored and digital audio / video from the user. And a digital processing / storing unit for playing back video signals and digital data streams upon request.

According to the present invention, the analog broadcast can be digitized and digitally recorded to prevent deterioration in image quality, to store broadcast programs of several minutes to several tens of minutes, and to reproduce various digital media in the form of CD including DVD titles.

Description

Digital set-top box that implements analog TV data and combines DVD player and method for implementing analog TV data using the same DIGITAL SET-TOP BOX}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital set-top box. In particular, a digital set-top box that can represent and reproduce a DVD (Digital Video Disk), implements analog TV data that can store and reproduce an analog broadcast signal, and combines a DVD player. And it relates to a method for implementing analog TV data using the same.

Currently, TVs and DVDs are becoming independent home appliances, and some home appliance companies have implemented VCR / DVD multifunction devices to record TV signals.

The TV viewer should watch with the TV turned on at the time the program is broadcast in order to watch the program that he wants to watch among the programs broadcast by the broadcast schedule of the broadcaster. You can watch analog TV programs that are aired at these times, or use analog VCRs to record video tapes on video tapes in order to preserve images recorded on CCTV cameras or video cameras or recorded on camcorders. It is common to play.

In this way, it is possible to record and schedule recording of desired TV programs using VCR.However, when recording in analog method as in the prior art, image quality is deteriorated compared to the original when recording / playing back. There is a problem that the deterioration of the image quality due to increases significantly.

Moreover, if there is an urgent business such as a situation in which a phone call is required while watching TV, the recording program for several minutes to several tens of minutes has passed, and the user has to revisit the operation of the VCR again after recording to rescan and watch the part that was not watched. There was this.

In order to solve such a problem, the technical problem to be achieved by the present invention is to provide a digital set-top box that can eliminate the deterioration of the image quality that occurs when digitally recorded by analog broadcast.

In addition, when the user is unable to watch a broadcast program for a few minutes to several tens of minutes due to urgent business, another purpose is to store the received broadcast signal so that the user can watch the broadcast program of a specific portion to be watched.

In addition, it is another object to enable the playback of a variety of digital media in the form of a CD, including a DVD title that is in the limelight as a VCR tape replacement.

1 is a block diagram illustrating a digital set-top box incorporating a DVD player according to an exemplary embodiment of the present invention.

2 is a flowchart illustrating a method of implementing analog TV data according to an embodiment of the present invention.

3 is a flowchart illustrating a process in which data is reproduced through a DVD player.

In order to achieve the above object, a digital set-top box implementing analog TV data and combining a DVD player according to an aspect of the present invention,

A digital set-top box that reproduces analog terrestrial broadcast signals through a display device.

An analog input unit for receiving an analog audio / video signal from the outside and converting the analog audio / video signal into a digital audio / video signal;

A DVD player which reads data from at least one recording medium storing digital audio / video signals and plays the data through the display apparatus;

The digital audio / video signals and digital data streams received from the analog input unit and the DVD player are processed and reproduced through the display device, or the processed digital audio / video signals and digital streams are stored and digital audio / video from the user. Digital processing / storage for playing back video signals and digital data streams

It includes.

According to another aspect of the present invention, a digital set-top box and an analog TV data implementing method using the same are provided.

A data implementation method using a digital set-top box that receives an analog terrestrial broadcast signal from a receiving antenna and plays back through a display device,

A first step of receiving an analog terrestrial broadcast signal transmitted from the reception antenna or an analog audio / video signal input from an external device and converting the received analog audio / video signal into a digital audio / video signal or a digital data stream;

A second step of processing the converted digital audio / video signal or digital data stream and playing back through the display device or storing the processed digital audio / video signal and digital stream; And

A third step of reading data from at least one recording medium storing digital audio / video signals and reproducing the same through the display apparatus;

It includes.

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

1 is a block diagram illustrating a digital set-top box incorporating a DVD player according to an exemplary embodiment of the present invention.

As shown in FIG. 1, a digital set-top box incorporating a DVD player according to an embodiment of the present invention includes an analog input unit 100, a digital processing / storage unit 200, a DVD player 300, and a switch matrix 400. And an internet connection 500.

The analog input unit 100 receives an analog broadcast signal, receives an image photographed from an external device such as a CCTV camera or a video camera, and receives an analog A / V signal recorded by a camcorder and converts the digital A / V signal.

The analog input unit 100 includes: a tuner 110 for receiving image data through a corresponding channel when image data input from a reception antenna (not shown) is allocated to a channel allocated thereto; An analog switch 120 for selecting a signal desired by a user from a signal output from the tuner 110 or an A / V signal input from an external input; A digital converter 130 for converting the analog A / V signal selected by the analog switch 120 into a digital A / V signal; An MPEG-2 encoder 140 for encoding (or encoding) the digital A / V signal converted from the digital converter 130 and converting the digital A / V signal into an MPEG-2 transport stream; MPEG-2 encoder 140 includes SDRAM 150 used as scratch memory required when converting digital A / V to MPEG-2 transport stream or converting MPEG-2 transport stream to digital A / V. do.

The tuner 110 is an analog tuner, and receives various broadcast programs currently being broadcasted by terrestrial broadcasters from around the world using a National Television System Committee (NTSC), a Phase Alternation Line (PAL) method, or an NTSC / PAL combined tuner. The tuner 110 further includes a demodulator (not shown) included in or connected to the inside, compatible with the tuner type (NTSC / PAL), and transferring the input analog A / V signal to the analog switch 120.

The digital processing / storage unit 200 processes digital A / V and digital streams provided from the analog input unit 100 and the DVD playback unit 300 described below, and displays or processes the processed data through the TV and audio. Play on request.

The digital processing / storage unit 200 receives the MPEG transport stream converted by the MPEG-2 encoder 140 and stores the received MPEG transport stream on a hard disk 220 or decodes the MPEG transport stream as a main video signal. Main controller 210 to express on the screen; Receives and stores image or video data and MP3 data from the main controller 210 for use in an MPEG-2 transport stream transmitted from the analog input unit 100 or a photo album supplied through a universal serial bus (USB). A hard disk 220; The audio converter 230 converts the digital audio signal into an analog audio signal and outputs the SDRAM 240, the FLASH RAM 250, and the EEPROM 260 for temporarily storing data according to a control signal from the main controller 210. Include.

The DVD player 300 reads and reproduces data from a recording medium such as a DVD title and MP3 (MP3) CD, a video CD, an audio CD, a CD-DA, a CD-RW, and reproduces digital A / V signals.

The DVD player 300 controls the operation of the DVD loader 330 that loads media such as playable DVD, MP3CD, Video CD, Audio CD, CD-DA, CD-RW, and the like. Or a DVD controller 310 calling data temporarily stored in the FLASH RAM 350 to reproduce data of a reproducible medium; And an audio converter 320 for converting and outputting the reproduced digital audio signal into an analog audio signal.

The switch matrix 400 is a standard format of an audio transmission file that allows the audio file to be moved from the digital processing / storage unit 200 or the DVD player 300 without converting the signal quality into an analog format that may degrade the signal quality. Implement the data as S / PDIF (Sony Philips Digital Interface) or RGB or CVBS signals as analog signals.

The Internet access unit 500 is composed of Ethernet, supports TCP / IP as a software protocol stack, and supports interfacing to connect to an external web server that provides a plurality of contents in a web environment. Remote control of browsers, e-mails, and externally connected web cameras to realize DVRs through inputted video data.

Hereinafter, a digital set-top box implementing analog TV data and combining a DVD player and a method for implementing analog TV data using the same will be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a method of implementing analog TV data according to an embodiment of the present invention.

When the analog terrestrial broadcast signal is received through a reception antenna (not shown), the tuner 110 receives a broadcast signal of various broadcast program signals currently broadcasted by terrestrial countries in the world, either NTSC or PAL or NTSC / PAL. do. At this time, the demodulator (not shown) connected to the tuner 110 or included in the tuner 110 transmits the analog A / V signal to the analog switch 120 using a type of tuning (NTSC, PAL) compatible. .

The analog switch 120 receives an analog terrestrial broadcast signal, which is an output signal from the tuner 110 (S100), or receives an A / V input signal from an external device (S110), and selects a signal determined by a user. An analog video signal and an analog audio signal may be connected and input from the external device. For example, an A / V signal captured by a CCTV camera or a video camera or an A / V signal generated when a program recorded in a camcorder is played. to be.

The analog A / V signal selected by the analog switch 120 is transmitted to the digital converter 130, and the VAD 131 and the AAD 132 of the digital converter 130 convert the input analog signal into the digital A / V signal. Is converted to (S120) and transmitted to the MPEG-2 encoder 140. The MPEG-2 encoder 140 encodes an input digital A / V signal, converts the digital A / V signal into an MPEG-2 transport stream, and transmits the same to the main controller 210.

The main controller 210 detects which selection function the user has selected (S130). The digital set-top box according to the embodiment of the present invention has basic functions, additional functions, and other functions. Basic functions include analog TV viewing, time shift, reservation recording, DVD, MP3CD, Video CD, Audio CD, CD-DA, CD-RW playback, photo album function, MP3 file playback on hard disk 220, analog External input A / V is digitally recorded, DVR (home security), and various PIP (Picture In Picture) screens are provided. PIP screen functions include hard disk playback / analog TV, hard disk playback / analog external input. And hard disk play / CCTV camera, hard disk play / DVD play, DVD play / analog TV, DVD play / analog input, DVD play / CCTV camera. Additional functions further include an Internet access through the Internet connection 500, web browser execution, e-mail transmission, remote DVR function via a web camera. Other functions include a digital tuner for satellite / cable / terrestrial waves (not shown) to take advantage of digital broadcasting.The main functions are EPG (Electronic Programming Guide Technology) and simple reservation using EPG. Recording, closed captioning, and teletext EPG (Electronic Programming Guide) technology.

When the digital A / V signal output from the digital converter 130 is input to the MPEG-2 encoder 140, the MPEG-2 encoder 140 encodes the input digital A / V signal and then the MPEG-2 transport stream. Convert to (S140). In this case, the same video signal converted into a digital signal by the VAD 131 and transmitted to the MPEG-2 encoder 140 may be transmitted to the main controller 210 to be used for implementing the above-described PIP function.

The converted MPEG-2 transport stream is delivered to the main controller 210, and the main controller 210 receives the MPEG-2 transport stream and stores or decodes it in the hard disk 220 (S150). It is displayed as the main video signal via the switch matrix 400. The reproduced audio signal is converted into an analog audio signal through the audio converter 230 and outputted, and also provides a digital audio output through S / PDIF. The digital audio signal output through S / PDIF may be reproduced as 5.1 channel audio by an external audio device. The SDRAM 240 may include the scratches required when the MPEG-2 encoder 140 converts a digital A / V signal into an MPEG-2 transport stream or converts an MPEG-2 transport stream into a digital A / V signal. scratch) Used as memory.

The main controller 210 checks whether the time shift function is selected by the user (S160). The time shift function is a function for recording a broadcast program for several minutes to several tens of minutes when a situation in which a telephone call is required while watching TV or a urgent business such as a toilet or an external visitor occurs.

If the time shift function is selected by the user, the main controller 210 records a specific index for each screen group together in the MPEG-2 transport stream to implement the high speed search function, and the MPEG-2 transformer including the index is included. The port stream is stored in the hard disk 220 (S170).

The main controller 210 checks whether the time shift function is released by the user (S180), and if it is detected that the user selects the time shift function selection (S180), the main controller 210 checks whether the user selects the fast search function (S190).

If the fast search function is selected by the user, the main controller 210 searches the MPEG-2 transport stream including the specific index stored in the hard disk 220, and displays the screen at a predetermined rate by referring to the specific index. Skip (S195) to perform a high speed operation. High-speed search is to skip some screens among 25 (PAL) or 30 (NTSC) screens per second depending on the broadcasting method, so that they can be viewed at high speed as a whole. Since a high-speed search is possible, when storing the MPEG-2 transport stream on the hard disk 220, a specific index is recorded and stored together.

If the fast search function is not selected by the user, the main controller 210 calls and plays the MPEG-2 transport stram stored in the hard disk 220 until the user releases the time shift function (S200). Display on the screen (S210). In this case, the MPEG-2 transport stream input from the time when the time shift function is released is continuously stored in the hard disk 220, and the main controller 210 continuously plays the MPEG-2 transport stream thus stored. Therefore, the user can continue to watch the desired A / V signal without being able to watch due to urgent business.

3 is a flowchart illustrating a process in which data is reproduced through a DVD player.

When a data storage medium such as DVD, MP3CD, Video CD, Audio CD, CD-DA, CD-RW is loaded on the DVD loader 330 by the user, the DVD controller 310 controls the DVD loader (S300), Data is read from the storage medium and reproduced (S310). At this time, since the reproduced video signal is transmitted to the main controller 210 in the form of a digital video signal, the main controller 210 implements and displays the digital video signal as the main video signal, or implements the above-described PIP function ( S320).

The DVD controller 310 transmits the reproduced audio signal to the audio converter 320, and converts the reproduced reproduced audio signal into an analog audio signal and outputs the converted audio signal to the audio converter 320. To display (S330). In this case, the output audio signal may provide digital audio output through S / PDIF, and the digital audio signal output through S / PDIF may be reproduced as 5.1 channel audio by an external audio device. In this manner, the DVD reproducing unit 300 can reproduce various storage media (DVD, MP3CD, Video CD, Audio CD, CD-DA, CD-RW) in one product.

In addition, the digital set-top box according to an embodiment of the present invention enables the user to access the Internet by the Internet access unit 500, so that the Internet can be searched on the TV screen, and other Internet-based additional services are possible. In particular, it provides a remote DVR function using a web camera, etc., because it processes multiple input sources, it is possible to implement the PIP function for each input source. For example, PIP such as HDD Play / Analog TV, HDD Play / Analog Input, HDD Play / CCTV Camera, HDD Play / DVD Play, DVD Play / Analog TV, DVD Play / Analog Input, DVD Play / CCTV Camera, etc. The functionality can be implemented with a digital set-top box.

The embodiments of the present invention described above are merely one embodiment, and many variations and modifications may be made to the components according to the embodiments within the scope not departing from the gist of the present invention. It is not limited to.

As described above, the digital set-top box implementing the analog TV data of the present invention and combining the DVD player and the analog TV data implementation method using the same can fundamentally solve the problem of deterioration in image quality by digitally recording analog broadcasting. .

In addition, since the reservation recording function uses a digital method, it is possible to record a program without deterioration of image quality, and the time shift function temporarily stores the program for a few minutes to several tens of minutes so that the user does not pass an important part to watch.

In addition, since the DVD player can play various types of digital media in the form of CDs including DVD titles that are in the spotlight for replacing VCR tapes, a separate space for installing a DVD player is not required.

Claims (12)

In a digital set-top box that receives an analog terrestrial broadcast signal from a receiving antenna and plays back through a display device, An analog input section which includes a digital converter receives an analog audio / video signal from the outside by using said digital converter into a digital audio / video signal; A DVD player which reads data from at least one recording medium storing digital audio / video signals and plays the data through the display apparatus; The digital audio / video signals and digital data streams received from the analog input unit and the DVD playback unit are processed and reproduced through the display device, or the processed digital audio / video signals and digital streams are stored and digital audio from the user. Processing / storage for playback on demand video / video signals and digital data streams Implementing analog TV data, including a digital set-top box combined DVD player. In claim 1, It is composed of Ethernet and supports TPC TCP / IP as a software protocol stack. It supports interfacing to connect to external web server that can receive a large number of contents in web environment, and control from digital remote place through input video data. Internet access to support; A digital tuner that receives a digital broadcast audio / video signal input from the receiving antenna as an assigned channel and receives a signal of a channel selected by a user from one or more channel signals. To implement analog TV data further comprising a digital set-top box combined DVD player. The method of claim 1, wherein the analog input unit A tuner for receiving an audio / video signal through a corresponding channel when an audio / video signal input from the receiving antenna is received through an assigned channel; An analog switch for selecting a signal desired by a user from a signal output from the tuner and an audio / video signal input from an external input; A digital converter for converting the analog audio / video signal selected by the analog switch into a digital audio / video signal; MPEG-2 encoder that converts the digital audio / video signal converted from the digital converter into an MPEG-2 transport stream. Implementing analog TV data, including a digital set-top box combined DVD player. The apparatus of claim 1, wherein the DVD player A DVD loader for supporting the reproducible recording medium; A DVD controller which controls the operation of the DVD loader and reproduces digital data stored in the recording medium; And The first audio converter converts the reproduced digital audio signal into an analog audio signal and outputs it. Implementing analog TV data, including a digital set-top box combined DVD player. The method of claim 1, wherein the digital processing / storage unit A hard disk for storing the MPEG-2 transport stream converted from the MPEG-2 encoder or a digital audio / video signal received from the outside; Stores the MPEG transport stream converted by the MPEG-2 encoder on the hard disk or decodes the MPEG-2 transport stream to be represented as the main video signal to the display device or is transmitted from the DVD player. A main controller which controls to display a signal on the display device; A second audio converter converting the digital audio signal into an analog audio signal according to the control signal from the main controller and outputting the analog audio signal Implementing analog TV data, including a digital set-top box combined DVD player. The method of claim 1 or 5, wherein the digital processing / storage unit In order to store and reproduce digital audio / video signals for a specific period of time according to a specific business, a specific index for each screen group is recorded together with the MPEG-2 transport stream, and the MPEG-2 including the specific index is included. After storing the transport stream on the hard disk, the MPEG-2 transport stream including the specific index stored on the hard disk is searched for when the user requests playback, and the screen is skipped at a predetermined rate by referring to the specific index. Digital set-top box that implements analog TV data, characterized by high-speed playback by combining a DVD player. In a data implementation method using a digital set-top box that receives an analog terrestrial broadcast signal from a receiving antenna and reproduces it through a display device, A first step of receiving an analog terrestrial broadcast signal transmitted from the reception antenna or an analog audio / video signal input from an external device and converting the received analog audio / video signal into a digital audio / video signal or a digital data stream; A second step of processing the converted digital audio / video signal or digital data stream and playing back through the display device or storing the processed digital audio / video signal and digital stream; And A third step of reading data from at least one recording medium storing digital audio / video signals and reproducing the same through the display apparatus; Analog TV data implementation method using a digital set-top box comprising a. The method of claim 7, wherein the first step is Receiving an analog terrestrial broadcast signal transmitted from the reception antenna through a tuner according to a broadcast standard method; Classifying a signal selected by a user from an analog terrestrial broadcast signal transmitted from the reception antenna or an analog audio / video signal input from an external device; Converting the analog signal transmitted through the digital converter into a digital audio / video signal; Encoding the digital audio / video signal converted by the digital converter through an MPEG-2 encoder and converting the digital audio / video signal into an MPEG-2 transport stream Analog TV data implementation method using a digital set-top box comprising a. The method of claim 7, wherein the second step is Checking whether a specific function is selected by a user, and if the specific function is not selected, storing or decoding an MPEG-2 transport stream on a hard disk and displaying the same on the display device; Storing the MPEG-2 transport stream continuously input to the hard disk when the specific function is selected by the user, and reproducing the MPEG-2 transport stream stored on the hard disk according to the user's release of the specific function; Analog TV data implementation method using a digital set-top box comprising a. 10. The method of claim 9, wherein playing the MPEG-2 transport stream Detecting a specific function selection by a user and recording a specific index for each screen group together in an MPEG-2 transport stream and storing the specific index on the hard disk; Checking whether the specific function selection is released by a user; Checking whether a fast search function of the MPEG-2 transport stream stored in the hard disk is selected by a user when the specific function selection deselection is detected; If the fast search function is selected by a user, searching for an MPEG-2 transport stream including the specific index stored in the hard disk; Playing the MPEG-2 transport stream stored at a high speed by skipping the screen at a predetermined ratio with reference to the specific index; Analog TV data implementation method using a digital set-top box comprising a. The method of claim 7, wherein the third step If the storage medium is mounted on a DVD loader, controlling the DVD loader through a DVD controller to read data from the storage medium; Causing the DVD controller to convert the read data into a digital video signal; Causing the DVD controller to convert the reproduced audio signal into an analog audio signal and output the converted audio signal, and to play the digital signal on the display device together with the digital video signal converted by the DVD controller. Analog TV data implementation method using a digital set-top box comprising a. The method of claim 7, wherein the digital set-top box is Analog TV viewing, scheduled recording, DVD playback, data playback from the storage media, photo albums, MP3 file playback stored on the hard disk, digital recording of analog input audio / video, home security and many Basic function of providing a PIP screen; Additional features of internet access, launching a web browser, sending e-mail, and remote digital video recording via a web camera; And an electronic program guide (EPG) with a satellite / cable / terrestrial digital tuner connected, a simple reservation recording using the electronic program guide, caption broadcasting, and other functions of teletext. And analog TV data implementation using the same.