KR100785988B1 - Apparatus and method for recording broadcasting of pve system - Google Patents

Abstract

An apparatus for recording broadcasting in a PVR(Personal Video Recorder) system and a method thereof are provided to perform the recording of broadcasting effectively in a corresponding recording section with a time shift function through character recognition or voice recognition of a specific keyword in the PVR system to improve user's convenience. A broadcasting recording/storing unit(108,112,116) divides received broadcasting into character data and a broadcasting signal and decodes the character data and the broadcasting signal, compresses or extracts the decoded broadcasting signal through a specific codec, processes and reproduces the extracted broadcasting signal, and records and stores the compressed broadcasting signal. A character recognition unit(110) recognizes the decoded character data while reproducing the received broadcasting, compares the character data with a preset time shift condition, and provides the compared result. A voice recognition unit(120) recognizes the voice of the reproduced broadcasting signal, compares the voice with the preset time shift condition and provides the compared result. A control unit(104) controls the time shift function to be operated if a keyword is detected by the preset time shift condition according to the compared result from the character recognition unit or the voice recognition unit and controls each configuration unit to perform the recording of broadcasting in a preset recording section.

Description

Broadcast recording apparatus and method thereof of a fibral system {APPARATUS AND METHOD FOR RECORDING BROADCASTING OF PVE SYSTEM}

1 is a block diagram of a FB system suitable for recording a broadcast with a time shift function according to the present invention;

2 is a flowchart illustrating a process of setting and registering a time shift condition for broadcast recording of a specific keyword and a specific section according to the present invention;

3 is a diagram illustrating a menu screen for setting and registering a time shift condition according to the present invention;

4 is a flowchart illustrating a process of recording a broadcast of a specific recording section corresponding to a specific keyword detected according to the present invention;

5 is a diagram illustrating a recording section according to a keyword detected in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

102: key input block 104: control block

106: tuning block 108: decoding block

110: character recognition block 112: codec block

114: signal processing block 116: storage block

118: menu generation block 120: speech recognition block

The present invention relates to a broadcast recording technique of a fibral system. More particularly, the present invention relates to a broadcast recording apparatus and a method of a fibral system suitable for recording a broadcast of a specific part of a fibral system.

As is well known, a personal video recorder (PVR) system is a personal digital video recorder for recording and playing back data on a hard disk, and a video cassette recorder (VCR) for recording a video signal on a magnetic tape. Alternatively, you can record large amounts of data on your hard disk and play it selectively.

In addition, the FV system stores Electronic Program Guide (EPG) information, allowing viewers to conveniently view the electronic program guide and record the program of interest, and unlike VCR, You don't need to replace the tape, and you can record programs without a separate recorder. This TV system provides various services to users, such as live screen stop function, time shift function, and high speed quick view function. to provide.

In particular, the time shift function can simultaneously play and record a video using the disk buffer, allowing users to view the video of the previous broadcast that is not currently being broadcast, and to move to the video of the current broadcast. It is possible to adjust to various playback modes, which has the advantage that the broadcast stream currently being broadcast live can be adjusted as diversely as the recorded stream.

However, in case of recording by using the time shift function in the FB system, the user may select and record a broadcast to be recorded by using the time shift function, or record by the time shift function using a keyword. Since recording is performed when there is the same content as the keyword through the PSIP information, broadcast recording of the program unit is performed according to the PSIP information, which is the program unit information, thereby making it inconvenient to perform the recording of the time shift function for the broadcast of a specific section. .

Accordingly, the present invention is to solve the above problems of the prior art, the broadcast recording apparatus of the FB system that can record a specific section of the broadcast by the time shift function through the character recognition or voice recognition in the FB system And a method thereof.

In accordance with one aspect of the present invention, there is provided an apparatus for recording a broadcast in a fibral system for playing and recording a broadcast received through a time shift function, and separating the received broadcast into text data and a broadcast signal. Means for decoding, compressing or decompressing the decoded broadcast signal through a specific codec, and processing and playing the decompressed broadcast signal, recording and storing the compressed broadcast signal, and during reproducing the received broadcast. Character recognition means for recognizing the decoded character data and comparing it with a preset time shift condition, and providing a comparison result, and recognizing and comparing a speech of the reproduced broadcast signal with the preset time shift condition, and comparing the result Speech recognition means for providing a comparison result from the text recognition means or the voice recognition means If the keyword according to the preset time shift condition is detected, the time shift function is controlled to operate, and the control unit controls the respective constituent means to perform broadcast recording for a preset recording section from the point where the keyword is detected. Provided is a broadcast recording apparatus of a FB system including means.

In another aspect to achieve the above object, the present invention provides a method for recording a broadcast in a FB system that plays and records a broadcast received through a time shift function, and sets a time shift condition for performing the time shift function. Registering; and checking whether a keyword through text recognition or voice recognition is detected according to the set registered time shift condition while playing the received broadcast; and detecting the keyword through text recognition or voice recognition. Operating the time shift function when the time shift function is activated; detecting and providing preset recording section information according to the time shift condition; and broadcasting the corresponding recording section according to the provided recording section information. The broadcast recording method of the FB system including the step of recording to provide.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

A key technical aspect of the present invention is to check whether a keyword through text recognition or voice recognition is detected according to a time shift condition while playing a broadcast received while setting and registering a time shift condition for performing a time shift function. When a keyword through recognition or voice recognition is detected, after operating the time shift function, the controller detects and provides preset recording section information according to a preset time shift condition, and records a broadcast of the corresponding recording section according to the provided recording section information. Through such technical means, it is possible to easily achieve the object of the present invention.

1 is a block diagram of a FV system suitable for recording a broadcast with a time shift function according to the present invention, and includes a key input block 102, a control block 104, a tuning block 106, and a decoding block 108. , A character recognition block 110, a codec block 112, a signal processing block 114, a storage block 116, a menu generation block 118, and a voice recognition block 120.

Referring to FIG. 1, the key input block 102 generates an operation signal for controlling the operation of a FV system using an input unit (not shown), for example, a remote controller. In the control block 104 provides an operation signal generated when a user inputs a key for performing a time shift function using an input unit (not shown).

In addition, the control block 104 performs overall operation control of the video system, including, for example, a microprocessor, for tuning the broadcast channel according to an operation signal provided from the key input block 102. Providing a control signal to the tuning block 106, providing a control signal for decoding the broadcast signal of the tuned broadcast channel to the decoding block 108, and compressing / decompressing the decoded broadcast signal in a manner such as MPEG. The control signal is provided to the codec block 112, the video signal among the broadcast signals is displayed through a monitor (not shown), and the audio signal is provided to the signal processing block 114 to output a control signal through a speaker not shown. do.

In addition, the control block 104 decodes the control signal for recording the broadcast signal of the broadcast channel tuned according to the recording operation signal provided from the key input block 102, the decoding block 108, the codec block 112 and the storage block. 116, according to an operation signal generated by a user according to a specific key (e.g., a recording key, a playback key, etc.) for operation control using an input means (not shown), for example, a remote controller or the like. The control signal for generating a menu screen displaying the related information is provided to the menu generation block 118 and the signal processing block 114.

Meanwhile, the control block 104 provides a control signal for recording and reproducing a broadcast signal (broadcast program) received in response to an operation signal for performing a time shift function generated from the key input block 102. The control signal for recording the received broadcast signal is provided to the decoding block 108, the codec block 112, and the storage block 116, respectively, and the control block for reproducing the received broadcast signal is decoded by the block 108. , The codec block 112 and the signal processing block 114.

When the control block 104 is provided with an operation signal for setting a condition for recording a broadcast of a specific section according to a keyword by using the time shift function, the control block 104 generates a control signal for generating a menu screen according to the menu generation block ( 118) and the signal processing block 114, and set and register the time shift condition input via this menu screen in the internal memory area. Here, the time shift condition may include, for example, a keyword, text recognition or voice recognition, a recording section, and the like, and text recognition and voice recognition according to keywords may be simultaneously or selectively set, and the recording section may be For example, it can be set to 5 minutes before and 15 minutes after.

In the control block 104, character data (for example, characters such as PSIP information, broadcast program information, etc.) transmitted from the decoding block 108 while receiving and reproducing an arbitrary broadcast in a state where a time shift condition is set and registered. Data is provided to the character recognition block 110 to compare the keyword according to the time shift condition, and if the same keyword is detected according to the comparison result, the time shift function is operated and then a preset recording section (e.g., For example, a control signal for recording the broadcast of the previous 5 minutes and the following 15 minutes, etc. with a time shift function is provided to the decoding block 108, the codec block 112, the storage block 116, and the like, and the signal processing block 114 is provided. Receives a speech signal processed and outputted through) and provides a control signal to the speech recognition block 120 for comparison with a keyword according to a time shift condition. If the same keyword is detected according to the result, after the time shift function is activated, a control signal for recording a broadcast of a preset recording section (for example, 5 minutes before and 15 minutes after this time) with the time shift function is decoded. ), The codec block 112, the storage block 116, and the like.

Next, the tuning block 106 tunes any one of a plurality of broadcast channels received via the antenna when the tuning control signal is provided from the control block 104, and the broadcast signal of the selected channel extracted from the transport stream. After demodulating and error correcting the packet data, the packet data is transferred to the decoding block 108.

The decoding block 108 separates the broadcast signal of the broadcast program from the transport stream and additional information (for example, character data such as PSIP information and broadcast program information) inserted in the transport stream, and then compresses a specific channel. The encoded broadcast signal (broadcast program signal) is restored to the original signal before encoding by decoding techniques such as variable length decoding, inverse DCT, inverse quantization, motion compensation, and transmitted to the codec block 112, and the character data of the additional information. Passes to the character recognition block 110.

In addition, the decoding block 108 transmits the decoded broadcast signal to the codec block 112 to decode, record, and play the received broadcast signal when performing the time shift function, and the codec block 112 transmits the decoded broadcast signal. The compressed data is transmitted to the storage block 116 by MPEG or the like, or the broadcast recorded in the storage block 116 is decompressed by the MPEG or the like and transmitted to the signal processing block 114 for reproduction.

On the other hand, the character recognition block 110 recognizes the character data (for example, character data such as PSIP information, broadcast program information) transferred from the decoding block 108 in accordance with the control signal provided from the control block 104 After comparing with the keyword included in the time shift condition, the comparison result (ie, whether the same character exists) is provided to the control block 104. Here, the character recognition may be performed by detecting a keyword of a time shift condition in PSIP information, broadcast program information, and the like.

In addition, the signal processing block 114 displays an image signal among the transmitted broadcast signals through a monitor (not shown), outputs an audio signal through a speaker not shown, and at the menu generation block 118 according to a user's request. The generated menu screen is mixed with an image signal and displayed on a monitor not shown. In addition, the signal processing block 114 performs a time shift function and transmits the voice output through the speaker (not shown) to the voice recognition block 120 to record a broadcast of a specific section.

The storage block 116 is, for example, a hard disk drive (HDD). When performing the time shift function, the storage block 116 receives and records a broadcast signal received from the codec block 110 and ends the time shift function. When the recorded broadcast signal is registered, the playlist is recorded at the same time. In addition, after the detection of the specific broadcast signal selected to reproduce it according to the user's request and delivers to the codec block 112.

In addition, the menu generation block 118 generates and transmits a menu screen for displaying a user operation, system information, and the like in the FV system, and sets a time shift condition according to a control signal provided from the control block 104. And a menu screen for transmitting the same to the signal processing block 114. This menu screen is mixed with the video signal via the signal processing block 114 and then displayed on a monitor not shown. As an example, FIG. 3 is a diagram illustrating a menu screen for setting and registering a time shift condition according to the present invention. The time shift condition includes, for example, whether a keyword, a text recognition or a voice recognition, a recording section, and the like. can do.

In addition, the voice recognition block 120 is signal-processed through the signal processing block 114 according to the control signal provided from the control block 104 receives a voice output through the speaker not shown, and then time shift condition After comparing with the keywords included in, the comparison result (that is, whether a voice corresponding to the keyword exists) is provided to the control block 104. Here, the speech recognition may be performed by frequency analyzing the speech wave and extracting and separating a sound region or a feature equivalent to the vowel.

Next, a process of setting and registering a time shift condition for broadcast recording in a specific section according to a specific keyword using a time shift function in a fibral system having the above-described configuration will be described.

FIG. 2 is a flowchart illustrating a process of setting and registering a specific keyword and a time shift condition for broadcast recording of a specific section according to the present invention.

Referring to FIG. 2, in the standby mode of the fibrous system (step 202), in the control block 104, a key for setting a time shift condition by a user using an input unit (not shown), for example, a remote controller, etc. If inputting is performed, it is checked whether there is an operation signal generated accordingly (step 204).

As a result of the check in step 204, when there is a time shift condition setting operation signal, the control block 104 provides a control signal for generating a menu screen for setting the time shift condition, and accordingly the menu generation block 118 In operation 206, the controller generates and transmits the generated menu screen to the signal processing block 114, and the menu screen is mixed with the video signal and displayed on a monitor (not shown) (step 206).

Through this menu screen, the user inputs time shift condition information by using an input unit (not shown), for example, a remote controller (step 208). As an example, FIG. 3 is a diagram illustrating a menu screen for setting and registering a time shift condition according to the present invention. The time shift condition may include, for example, whether a keyword, a text recognition or a voice recognition, a recording section, and the like. Can be.

Then, the control block 104 checks if there is a setting registration operation signal generated from the key input block 102 when the user inputs a key for setting and registering the input time shift condition (step 210).

As a result of the check in the step 210, if there is a setting registration operation signal, the control block 104 stores the input time shift condition information in the internal memory area and registers the setting (step 212).

Next, while reproducing a broadcast received with the time shift condition set and registered as described above, a character or voice in the broadcast is recognized to search for and detect a keyword according to the time shift condition, and time shift according to the detected keyword. A process of recording a broadcast in a specific recording section after operating the function will be described.

4 is a flowchart illustrating a process of recording a broadcast of a specific recording section corresponding to a specific keyword detected according to the present invention.

Referring to FIG. 4, in the broadcast reception mode of the FB system (step 402), the control block 104 transmits the character data (for example, PSIP information, transmitted from the decoding block 108) for the received broadcast. Character data such as broadcast program information) and a control signal for comparing keywords according to time shift conditions to the character recognition block 110, and a signal processing block 114 receives a signal that is processed and outputted through a signal processing time. By providing a control signal for comparison with the keyword according to the shift condition to the speech recognition block 120, the keyword according to the time shift condition is searched for text and voice (step 404). Here, the time shift condition may include, for example, a keyword, text recognition or voice recognition, a recording section, and the like, and the text recognition is performed by detecting keywords of the time shift condition in PSIP information, broadcast program information, and the like. Speech recognition may be performed by frequency-analyzing the speech wave to extract and separate a sound region that characterizes the vowel or a feature equivalent thereto.

In the control block 104, the same keyword is detected according to the comparison result from the character recognition block 110 or the comparison result from the speech recognition block 120 during the text and voice search for the keyword according to the time shift condition. Then, it is checked whether the same keyword is detected (step 406).

If the same keyword is detected as a result of the check in the step 206, the control block 104 operates the time shift function by controlling the respective component blocks to perform the time shift function of the PIB system (step 408). . That is, the control block 104 controls to record and simultaneously broadcast the broadcast received through the FV system.

Next, the control block 104 detects predetermined recording section information included in the time shift condition stored in the internal memory area, and decodes the information into the decoding block 108, the codec block 112, and the storage block 116. (Step 410). As an example, FIG. 5 is a diagram illustrating a recording section according to a keyword detected according to the present invention. The preset recording section information is based on a point A where a keyword is detected. It can be seen that the information means up to the recording interval point (b) after the predetermined time, as shown in Figure 3, such recording interval information, 5 minutes before and 15 minutes after, 10 minutes before and 5 minutes, etc. You can register the settings.

Subsequently, the control block 104 provides a control signal for recording the broadcast of the corresponding section to the decoding block 108, the codec block 112, the storage block 116, and the like according to the provided recording section information. The broadcast of the corresponding section is recorded using the block 108, the codec block 112, the storage block 116, and the like (step 412).

Therefore, the FV system sets and registers a time shift condition according to a specific keyword, searches for text and voice during playback of a received broadcast, detects a specific keyword, and detects a predetermined keyword for a preset recording section according to the detection of the specific keyword. Broadcast recording can be performed.

In the foregoing description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto. Those skilled in the art will appreciate that the present invention may be modified without departing from the spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

As described above, the present invention, unlike the conventional method of performing broadcast recording with the time shift function according to the PSIP information of a broadcast program, reproduces a broadcast received while setting and registering a time shift condition for performing the time shift function. If a keyword through text recognition or voice recognition is detected according to the registered time shift condition during operation, the time shift function is activated, and then, by detecting and providing preset recording section information according to the time shift condition, the broadcast of the corresponding recording section is recorded. In the FB system, the user can improve the user's convenience by effectively performing the broadcast recording for the corresponding recording section by using the time shift function through text recognition or voice recognition for a specific keyword.

Claims (10)

A device for recording a broadcast in a FB system that plays and records a broadcast received through a time shift function. The received broadcast is separated into text data and a broadcast signal, decoded, the decoded broadcast signal is compressed or decompressed through a specific codec, the decoded broadcast signal is processed and reproduced, and the compressed broadcast signal is recorded and stored. Means to do, Character recognition means for recognizing decoded character data while reproducing the received broadcast, comparing the decoded character data with a preset time shift condition, and providing a comparison result; Voice recognition means for recognizing the voice of the broadcast signal to be reproduced, comparing the preset time shift condition with the voice, and providing a comparison result; When the keyword according to the preset time shift condition is detected according to the comparison result from the text recognition means or the voice recognition means, the time shift function is controlled to be operated, and the broadcast for the preset recording section from the point where the keyword is detected. Control means for controlling said respective configuration means to perform recording Broadcast recording device of a FB system including a. The method of claim 1, And the character recognition unit detects and compares the PSIP information or the broadcast program information of the broadcast to be reproduced with the keyword. The method of claim 1, And the voice recognition means recognizes the reproduced voice in a manner of frequency analysis to extract and separate a sound region or a feature equivalent to the vowel. The method of claim 1, The preset time shift condition includes a keyword, text recognition or voice recognition, and a recording section. The method of claim 1, And the preset recording section is registered and registered at a time before and after the keyword is detected. As a method of recording a broadcast in a FB system that plays and records a broadcast received through a time shift function, Setting and registering a time shift condition for performing the time shift function; Checking whether a keyword through text recognition or voice recognition is detected according to the set registered time shift condition while playing the received broadcast; Operating the time shift function when a keyword through the text recognition or voice recognition is detected; Detecting and providing preset recording section information according to the time shift condition when the time shift function is operated; Recording the broadcast of the corresponding recording section according to the provided recording section information Broadcast recording method of a FB system including a. The method of claim 6, The time shift condition is registered by including a keyword, text recognition or voice recognition, and a recording section. The method of claim 6, And the recording section information is registered and registered with a time before and after from the point where the keyword is detected. The method of claim 6, The character recognition is a broadcast recording method of the FB system, characterized in that performed via the PSIP information or broadcast program information of the broadcast being played. The method of claim 6, The voice recognition is performed in a manner of frequency analysis of the voice of the broadcast being reproduced by extracting and separating a sound region or a feature equivalent to the vowels, characterized in that the broadcast recording apparatus of the FB system.

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