KR101225078B1 - Apparatus and method for reproducing a recorded program - Google Patents

Abstract

The present invention relates to an apparatus and method for reproducing a program recorded in a recorder having a broadcast receiver, and to an apparatus and method for processing a signal to watch a program recorded in the recorder on a television by a simple operation.

An apparatus for reproducing a recorded program according to the present invention comprises: a tuner for receiving a broadcast signal; A recorder for recording the broadcast signal received by the tuner on a recording medium; A controller for managing channel allocation and playback schedules for the broadcast programs recorded on the recording medium; And a digital broadcast signal change circuit for converting a broadcast program reproduced by the recorder into a digital broadcast signal of a channel allocated by the controller according to the reproduction schedule.

Description

Apparatus and method for reproducing a recorded program}

1 is a block diagram of a broadcast recording / playback and reception system according to the present invention.

FIG. 2 is a detailed block diagram of the digital broadcast signal changing circuit 10-4 shown in FIG.

3 is a detailed block diagram of the television receiver 20 shown in FIG.

4 is a flowchart of a recorded program playing method according to the present invention.

The present invention relates to an apparatus and method for reproducing a program recorded in a recorder having a broadcast receiver, and to an apparatus and method for processing a signal to watch a program recorded in the recorder on a television by a simple operation.

In general, when playing a program recorded in a recorder with a digital broadcast receiver, the menu screen is displayed by using a remote controller (aka remote controller) or a key button on the set, and then a program desired by the user on the menu screen is displayed. To play.

That is, it was impossible to watch a program recorded in the recorder through a single key button input by selecting a channel selection or an external input on the TV.

Accordingly, when a user wants to play a program recorded in a recorder while watching a program currently being broadcasted through a TV, there is an inconvenience in use that requires input of a plurality of key buttons.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a recording program reproducing method and apparatus for reproducing a recorded program so that a program recorded in a recorder can be viewed by a simple user operation on a TV.

In accordance with an aspect of the present invention, a recording program reproducing apparatus includes: a tuner configured to receive a broadcast signal; A recorder for recording the broadcast signal received by the tuner on a recording medium; A controller for managing channel allocation and playback schedules for the broadcast programs recorded on the recording medium; And a digital broadcast signal change circuit for converting a broadcast program reproduced by the recorder into a digital broadcast signal of a channel allocated by the controller according to the reproduction schedule.

Preferably, the digital broadcast signal changing circuit further comprises: an additional information generator for generating additional information related to the corresponding broadcast program; A video signal and an audio signal separated from the broadcast program played by the recorder are encoded according to the playback schedule, and the encoded video stream and audio stream and the first additional information generated by the additional information generator are multiplexed to provide a single signal. One or more program encoders for generating a stream for digital broadcast; A multiplexer for generating a plurality of digital broadcast streams by multiplexing the at least one program encoder output and the second additional information generated by the additional information generator; And a channel coder and a modulator for performing channel coding and modulation of the plurality of digital broadcast streams output from the multiplexer.

According to another aspect of the present invention, there is provided a method of reproducing a recorded program, the method including: (a) setting a channel assignment and a reproduction schedule for broadcast programs recorded on a recording medium; (b) reproducing a broadcast program signal recorded on the recording medium according to the reproduction schedule; And (c) converting the broadcast program signal reproduced in step (b) into a digital broadcast signal of a channel allocated in step (a) and transmitting the digital program signal to a television receiver.

Preferably, the digital broadcast signal converted in step (c) is synthesized with the digital broadcast signal received by the tuner and transmitted to the television receiver.

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

As shown in Fig. 1, the broadcast recording / reproducing and receiving system according to the present invention comprises a recorded program reproducing apparatus 10 and a television receiver (TV) 20.

In detail, the recorded program reproducing apparatus 10 includes a tuner 10-1, a synthesizer 10-2, a recorder 10-3, a digital broadcast signal changing circuit 10-4, and a controller 10-5. And a user interface (UI) 10-6.

First, the operation of the recorded program reproducing apparatus 10 will be described.

The user interface 10-6 is user command input means for selecting a function of the recorded program reproducing apparatus 10.

The recorder 10-3 may be configured with various kinds of data storage devices including a hard disk drive and a video tape recorder (VTR).

The tuner 10-1 receives the digital broadcast signal and outputs it to the synthesizer 10-2.

When the recording function is selected in the user interface 10-6, the recorder 10-3 processes the input broadcast program signal and records the recorded broadcast program signal on a recording medium (not shown). The controller 10-5 assigns a new channel number to the recorded broadcast program to create a program recording list as shown in FIG. As shown in FIG. 5, the number 80 is assigned to the new channel number. Here, the new channel number is set to avoid the channel allocated in the general broadcast and the channel allocated in the cable broadcast. In addition, since the digital broadcasting can provide up to four channels in the SD class, new channel numbers are set to 80-1, 80-2, 80-3, and 80-4 as an example. In order to divide the recorded program into four channels, the channel number can be determined in the order of recording from 80-1 to 80-4. As another example, depending on the genre of the recorded program, the drama program is divided into channels 80-1, the sports program is divided into channels 80-2, the news program is divided into channels 80-3, and the entertainment program is divided into channels 80-4. Can be.

Then, when the playback schedule for the recorded programs is set using the user interface 10-6, an EPG (Electronic Program Guide) table for the newly allocated channel as shown in FIG. 6 is generated.

The controller 10-5 controls the recorder 10-3 to play back the recorded programs according to the set playback schedule. Recorded programs to be reproduced are converted into digital broadcast signals by the digital broadcast signal changing circuit 10-4.

The detailed structure of the digital broadcast signal change circuit 10-4 is shown in FIG.

As shown in FIG. 2, the digital broadcast signal change circuit 10-4 includes a program encoder 220, an additional information generator 230, a multiplexer 240, and a channel coder & modulator 250. Here, the program encoder 220 is composed of a video encoder 220-1, an audio encoder 220-2, and a multiplexer 220-3.

When recorded programs are played in the recorder 10-3 according to the playback schedule set as shown in FIG. 6, after the video and audio signals are separated from the played program 1 210-1, respectively, the MPEG-2 encoder is used as an example. The video encoder 220-1 and the audio encoder 220-2 constituted by the AC-3 encoder are used to generate a video stream and an audio stream.

Next, the additional information generator 230 may include program specific information (PSI) and a program and system information protocol (PSIP) such as a program allocation table (PAT) and a program map table (PMT). Generate additional information such as; The additional information generator 230 also determines the PMT_PID to create a single program TS stream.

Then, the multiplexer 240 multiplexes the video stream, the audio stream, and the PMT (Program Map Table), which is additional information, to generate an MPEG-2 Transport Stream (TS), which is a digital broadcast stream.

That is, while program 1 recorded in the recorder 10-3 is designated as TS program number 1, it attempts to allocate 100 PMT_PID for this program. First, the video signal of the program 1 is encoded by the video encoder 220-1, converted into a video elementary stream, packetized into a video packetized elementary stream (PES), and the PID is 101. In the same manner, the audio signal of program 1 is encoded by the audio encoder 220-2, converted into an audio elementary stream, and packetized into an audio packetized elementary stream (PES), and the PID is 102. Then, the PMT_PID 100 is designated as the video PES as the PID 101 and the audio PES as the PID 102, and then passes through the multiplexer 220-3 to generate a single program.

In the case of SD broadcasting in digital broadcasting, up to 4 channels can be provided, so if a recorded program is SD, it can be transmitted together in 4 channels.

The single programs generated as described above are multiplexed together with additional information such as PAT and PSIP in the multiplexer 240 to generate a multi program. Here, the PAT is matched with a program number and PMT_PID information for each program. In addition, the event information table (EIT) of the PSIP is utilized as EPG information in the TV.

The multi-programs generated as described above are subjected to channel coding and, for example, 8-VSB modulation in the channel coder & modulator 250 and converted into digital broadcast broadcast signals BS_NEW CH.

Accordingly, the recorded programs stored in the recorder 10-3 are converted to the digital broadcast signal BS_NEW CH of the new channel and synthesized with the digital broadcast signal output from the tuner 10-1 by the synthesizer 10-2. It is output to the TV 20.

Next, an operation of simply watching the recorded programs stored in the recorder 10-3 in the television receiver 20 will be described.

The detailed configuration of the television receiver 20 is shown in FIG.

As shown in FIG. 3, the television receiver 20 includes a tuner 301, a channel decoder 302, a demultiplexer 303, an audio data processor 304, a video data processor 305, a speaker 306, and a synthesizer. The unit 307, the display means 308, the control unit 309, the key input means 310, the graphic processing unit 311, the timer circuit 312 and the memory 313.

First, the basic operation of the television will be described.

After the TV is turned on using the key button of the key input means 310, and the channel to be watched is selected, the tuner 301 uses the channel control signal generated by the controller 309 to record the program. Only the broadcast signal of the channel set by the user is selected and output from the broadcast signal received from the playback device 10. Then, the channel decoder 302 restores the digital signal detected from the broadcast signal of the channel selected by the packet unit and outputs the packet to the demultiplexer 303. The demultiplexer 303 separates the audio data, the video data, and the additional information data from the restored packet unit data into individual bit strings and outputs the data.

Then, the separated audio data is decoded by the audio data processing unit 304, converted into an analog signal, amplified, and finally output through the speaker 307.

The separated video data is subjected to signal processing such as decoding, error correction, signal specification conversion, and the like by the video data processing unit 305. Then, the decoded video signal is synthesized by the graphic signal generated by the graphic processor 311 and the synthesizer 307 and finally output through the display unit 308.

The event information table (EIT) information of the PSIP included in the additional information data separated by the demultiplexer 303 is stored in the memory 313 under the control of the controller 309.

The timer circuit 312 is composed of a circuit for generating time information.

When the EPG menu is selected by using the function selection key on the key input unit 310, the EPG table information as shown in FIG. 6 for the newly allocated broadcast channels 80-1 to 80-4 in the recorded program playback apparatus 10 is displayed. Processed by the processing unit 311 and output through the display means (308).

Accordingly, when the user changes the channel to 80-1 while watching the general airwave channel, for example, the user can immediately watch a program recorded in the recorder. That is, the user can simply watch the program recorded in the recorder in the same manner as the actual broadcast by changing only the channel.

Next, a recording program reproduction method according to the present invention will be described with reference to the flowchart of FIG.

First, a new channel is allocated to broadcast programs recorded in the data storage device, and a reproduction schedule is set (S410). New channels should be avoided by over-the-air broadcaster channels and channels used by cable TV providers.

After the channel allocation and playback schedule for the recorded broadcast program are set, the recorded broadcast program is played back according to the set playback schedule (S420).

Next, the broadcast program reproduced according to the playback schedule is converted into a digital broadcast signal of a newly allocated channel and transmitted to the TV (S430). When converting a digital broadcast signal, program specific information (PSI) such as a program allocation table (PAT), a program map table (PMT), and additional information such as a program and system information protocol (PSIP) Is generated and inserted into the digital broadcast signal. In addition, since digital channels can provide up to four channels in the case of SD class, new channel numbers may be used as 80-1, 80-2, 80-3, when the recorded broadcast program is SD. Allocate 4 programs with 4 channel numbers by assigning 80-4. In addition, the digital broadcast signal of the newly allocated channel is combined with the digital broadcast signal received by the tuner and transmitted to the TV.

Next, the TV receiver changes the viewing channel to watch the recorded broadcast program in the same manner as the general broadcast program (S440). Of course, the playback schedule of the recorded broadcast program may be checked through the EPG table.

The invention can be practiced as a method, apparatus, system, or the like. When implemented in software, the constituent means of the present invention are code segments that necessarily perform the necessary work. The program or code segments may be stored in a processor readable medium or transmitted by a computer data signal coupled with a carrier wave in a transmission medium or network. Processor readable media includes any medium that can store or transmit information. Examples of processor-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, E ² PROMs, floppy disks, optical disks, hard disks, optical fiber media, radio frequency (RF) networks, and the like. Computer data signals include any signal that can propagate over transmission media such as electronic network channels, optical fibers, air, electromagnetic fields, RF networks, and the like.

Specific embodiments shown and described in the accompanying drawings are only to be understood as an example of the present invention, not to limit the scope of the invention, but also within the scope of the technical spirit described in the present invention in the technical field to which the present invention belongs As various other changes may occur, it is obvious that the invention is not limited to the specific constructions and arrangements shown or described.

As described above, according to the present invention, by converting a program recorded in the data storage device into a broadcast signal allocated to a new channel and transmitting the broadcast signal to the TV, the user watching the TV changes the channel and records it in the same manner as the actual broadcast. A convenient effect is generated to easily watch the programmed program. In addition, since the recorded program is converted in the same manner as the digital broadcast signal transmitted from the actual broadcasting station, the playback schedule of the recorded programs can be checked using EPG information, so that the recorded program can be conveniently viewed.

Claims (6)

A tuner for receiving a broadcast signal; A recorder for recording the broadcast signal received by the tuner on a recording medium; A controller for managing channel allocation and playback schedules for the broadcast programs recorded on the recording medium; And And a digital broadcast signal change circuit for converting a broadcast program played by the recorder into a digital broadcast signal of a channel allocated by the controller according to the playback schedule. The circuit of claim 1, wherein the digital broadcast signal change circuit comprises: An additional information generator configured to generate additional information including first additional information and second additional information related to the broadcast program; The video signal and the audio signal separated from the broadcast program reproduced by the recorder are encoded according to the reproduction schedule, and the encoded video stream and audio stream and the first additional information generated by the additional information generator are multiplexed to provide a single signal. One or more program encoders for generating a digital broadcast stream; A multiplexer for generating a plurality of digital broadcast streams by multiplexing the at least one program encoder output and the second additional information generated by the additional information generator; And And a channel coder and a modulator for channel coding and modulating the plurality of digital broadcast streams output from the multiplexer. The system of claim 2, wherein the first additional information is a program map table (PMT), and the second additional information is a program allocation table (PAT) and program and system protocol information. Recorded program playback apparatus characterized in that the information protocol (PSIP). The apparatus of claim 1, further comprising a synthesizer for synthesizing the broadcast signal received by the tuner and the broadcast signal converted by the digital broadcast channel signal changing circuit. (a) setting channel allocation and reproduction schedules for the broadcast programs recorded on the recording medium; (b) reproducing a broadcast program signal recorded on the recording medium according to the reproduction schedule; And and (c) converting the broadcast program signal reproduced in step (b) into a digital broadcast signal of a channel allocated in step (a) and transmitting the signal to a television receiver. The method of claim 5, wherein the digital broadcast signal converted in step (c) is combined with the digital broadcast signal received by the tuner and transmitted to the television receiver.

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