KR100794834B1 - Method and apparatus for recording of image display device - Google Patents

Abstract

An apparatus and a method for controlling the recording of an image display device are provided to control the storage of a recorded material according to the reception state of a recorded broadcasting signal, thereby managing the storage space effectively. A user interface(170) is used to receive a request command from a user. A tuner unit(120) selects a broadcasting signal of a channel selected by a user among broadcasting signals received from the exterior. A demodulation module(132) demodulates a broadcasting signal selected through the tuner unit(120). A storage unit(180) stores the demodulated broadcasting signal. A controller(200) determines the state of a video signal which is periodically recorded so that a corresponding message is displayed if a recorded video monitoring function is set through a user interface. The controller(200) selectively controls the recording state according to a command input through a user interface.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording apparatus,

1 is a block diagram showing a recording control apparatus of a video display device according to a related art.

2 is a block diagram illustrating a video recording and playback control apparatus of a video display device according to the present invention.

FIG. 3 is a flowchart illustrating a method of controlling a video recording apparatus according to an exemplary embodiment of the present invention.

Description of Reference Numerals to Main Parts of the Drawings *****

110: first switching unit 120: tuner unit

122: main tuner 124: sub tuner

130: Input signal processing unit 132:

134: Analog decoder 136: Digital demodulator

140: second switching unit 150: image processing unit

160: display unit 170: user interface unit

180: storage unit 190: PLD unit

200: control unit 210: OSD generating unit

220:

The present invention relates to a video display device, and more particularly, to a video recording device control method and apparatus for a video display device that monitors the status of a broadcast signal being recorded while a viewer watches another broadcast signal .

Recently, a personal video recorder (PVR) product for recording / reproducing a TV broadcast by incorporating a storage medium such as a hard disk has been developed and commercially available. These products are expected to rapidly replace the existing VCR (Video Cassette Recorder) products with the full-scale digital broadcasting.

In addition, the PVR includes a plurality of tuners to select a channel to be viewed by a user through one tuner, and to select a channel to be recorded through another tuner, thereby allowing the user to view one channel while storing another channel .

Hereinafter, a recording control apparatus for a video display apparatus according to the related art will be described with reference to the accompanying drawings.

As shown in FIG. 1, the apparatus for controlling a video display apparatus according to the related art includes a television tuner 1 for tuning broadcast signals for viewing and recording from a broadcast signal input through an antenna, and a tuner 1 for recording (4) for converting the outputs of the tuner and the tuners (1) and (2) into an intermediate frequency, an output of the intermediate frequency converter (3) (4) Video switching unit 8 for outputting a broadcasting signal for viewing and listening to audio / video signals to the audio processing unit 5 and the video processing unit 6 and outputting a broadcasting signal for recording to the recording apparatus 7, A speaker 9 for outputting a signal of the audio processing unit 5; a display unit 11 for receiving and displaying the output signal of the image processing unit 6 through the combining unit 10; (2) to the electric field strength of the broadcast signal for recording And outputs a switching signal having a low potential or a high potential by receiving a variable AGC to detect whether a broadcast signal for recording is input in a steady state or a non-signal or a weak electric field signal The OSD character generator 13 and the OSD character generator 13 determine whether the broadcast signal for the corresponding recording is a no-signal or a phantom signal for a preset time according to the signal detected through the weak field detector 12, A signal is inputted from the OSD character generator 13 to the synthesizer 10 by outputting a control signal to the voice processor 5 so that a warning phrase is displayed on the screen through the display 11, And a control unit 14 for controlling the alarm through the speaker 9.

The operation of the recording control apparatus of the image display apparatus according to the related art will now be described.

First, the TV tuner 1 selects a broadcast signal of a channel that the user is currently watching, and the recording tuner 2 selects a broadcast signal of a channel to be recorded by the user.

The weak electric field detector 12 checks the automatic gain control voltage AGC of the broadcasting signal input through the recording tuner 2 and transmits the checked automatic gain control voltage to the controller 14 do.

Then, the control unit 14 determines whether the broadcast signal for recording is a non-signal or a weak electric field signal based on the transmitted automatic gain control voltage and the electric field intensity of the recording tuner 2 is lower than a preset reference The OSD character generator 13 and the speaker 5 are controlled to output a warning message on the screen and the alarm is sounded through the speaker 5 so that the viewer can record .

However, in the video recording apparatus according to the related art, the state of the broadcast signal to be recorded is not only a weak electric field but also a sink collapse occurring in a strong electric field system, a problem that the DTV is not locked, Signal failure due to signal interference often occurs.

Therefore, there is a limitation in monitoring the recording channel by the AGC voltage of the conventional pharmacopoeia.

Further, there is an inconvenience in that the user does not have the editing function of the stored broadcasting signal due to the occurrence of the abnormality, and therefore, the user must search for and delete the portion where the broadcasting signal is recorded.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and it is an object of the present invention to monitor a reception state of a broadcast signal being recorded, and to display a message to a user when a reception data abnormality occurs.

In addition, when an error occurs in the reception state of a broadcast signal being recorded, it is also possible to delete only a corresponding part in which an error has occurred according to a command input from a user.

It is another object of the present invention to provide an apparatus and method for selectively storing a recorded picture according to a reception state of a broadcast signal being recorded, thereby efficiently using the storage space.

According to another aspect of the present invention, there is provided a video recording and playback control apparatus for a video display device, including a user interface unit for receiving a request command from a user, a tuner unit for tuning a broadcast signal of a channel selected by a user, A demodulator for demodulating a broadcast signal selected through the tuner, a storage for storing the demodulated broadcast signal, and a control unit for controlling the state of the video signal being periodically recorded A controller for selectively controlling a recording state according to a command input through the user interface, and a control unit for controlling the state of a video signal being recorded and the received live video And a display unit for displaying a signal, There is has its features.

Preferably, the tuner unit is composed of at least one or more tuners.

And a PLD for detecting sync information of the video signal periodically and transmitting the detected sync information to the controller when the broadcast signal to be recorded is an analog signal.

More preferably, the state of the video signal being recorded is a sync state of the video signal in the case of an analog signal, and the presence or absence of a packet error in the video data in the case of a digital signal.

More preferably, the control unit detects and stores information on a time point at which a first abnormal signal of the corresponding video signal occurs when the state of the video signal being recorded is abnormal.

More preferably, the control unit deletes a corresponding part in which an abnormal video signal is generated based on information at a time when the first abnormal signal is generated according to a command input through the user interface unit.

And an OSD generating unit for generating an OSD for generating a menu screen for selecting whether or not to erase a corresponding part in which an abnormal video signal is generated according to a control signal of the control unit.

According to another aspect of the present invention, there is provided a video recording control method for a video display device having a storage unit, the method comprising: storing a broadcast signal in a storage unit when a recording command is input; The method includes the steps of: determining whether a recording video monitoring function is set; monitoring a state of the corresponding video signal during a predetermined period when the recording video monitoring function is set; And selectively controlling the deletion or the recording of the recorded video signal.

Preferably, the step of monitoring the state of the corresponding video signal is a step of monitoring sync information of the corresponding video signal when the corresponding broadcast signal is an analog signal.

More preferably, the step of monitoring the sync information is a step of monitoring whether or not to detect a sync of the analog video signal and whether or not the sync signal is detected within an error range.

More preferably, the step of monitoring the state of the corresponding video signal is a step of monitoring the presence or absence of a packet error of the video data when the corresponding broadcast signal is a digital signal.

More preferably, the step of monitoring the presence or absence of a packet error in the corresponding image data may include determining whether an error rate and an error duration of the corresponding image data exceed a reference value based on S / N (SIGNAL TO NOISE) and FEC (FOWARD ERROR CORRECTION) It is a step to judge.

The step of selectively controlling the deletion or the recording of the video signal recorded according to the state of the corresponding video signal may further include displaying the corresponding message when the state of the video signal being recorded is abnormal, The method comprising: deleting a corresponding part in which an error has occurred when a deletion command of a corresponding recording is input in a message; and maintaining the recording of the corresponding broadcast signal when the corresponding recording state maintenance command is input in the displayed message. .

More preferably, the step of deleting the corresponding portion includes extracting and storing information at a time when the first abnormal video signal is generated when the state of the video signal being recorded is abnormal, And deleting the corresponding part in which the abnormality occurs based on the information.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for controlling a video display apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram illustrating a video recording apparatus according to an embodiment of the present invention. FIG. 3 is a flowchart illustrating a method of controlling a video recording apparatus according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the video recording apparatus according to the present invention includes a first switching unit 110 for receiving and selectively outputting an external air and cable signal, A tuner unit 120 for tuning a broadcast signal of a desired channel among the broadcast signals inputted through the first switching unit 110 and an input signal processing unit for processing a broadcast signal selected through the tuner unit 120 A second switching unit 140 for selectively outputting a broadcast signal processed through the input signal processing unit 130 and a second switching unit 140 for scaling a video signal selected through the second switching unit 140, A display unit 160 for displaying a video signal signal processed through the image processing unit 150, a user interface for receiving a request command from a user, A storage unit 180 for storing a broadcast signal selected from the user interface unit 170 and a control unit 160 for detecting sync information of an analog video signal processed through the input signal processing unit 130, (PLD) 190 for delivering a video signal to a user terminal 200 and a user interface unit 170 for inputting a video recording command, A control unit 200 for controlling recording stop or recording, and a menu screen for selecting whether or not to erase a corresponding part of the video signal being recorded according to a control signal of the control unit 200, as an OSD An OSD generating unit 210 and a synthesizer 220 for synthesizing an image signal input through the image processing unit 150 and an OSD input through the OSD generating unit 210. [

The tuner unit 120 includes a main tuner 122 for tuning a broadcast signal of a channel the user is currently watching and a sub tuner 124 for tuning a broadcast signal of a channel to be recorded, They may change.

The input signal processing unit 130 may include a demodulation unit 132 for receiving and demodulating an analog signal or a digital signal tuned through the main tuner 122 and a demodulation unit 132 for inputting an analog signal tuned through the sub tuner 124 And a digital demodulator 140 for receiving and demodulating a digital signal among the broadcasting signals tuned through the sub tuner 124. [

The operation of the video recording apparatus according to the present invention will now be described.

The main tuner 122 tunes to a broadcast signal of a channel that the user is currently watching, and the sub tuner 124 tunes the broadcast channel of the user To select a broadcast signal of the channel to be recorded.

In addition, the present invention can be configured through a single tuner. In order to obtain the optimum effect of the present invention, a description will be given of a case where a program currently being watched by a user is different from a program being recorded.

First, when a power-on command is input from the user interface unit 170, the controller 200 outputs a control signal through the switching unit 110 to selectively output a broadcast signal of a channel desired by the user.

Then, the main tuner 122 selects a broadcast signal input through the switching unit 110, and the selected broadcast signal is demodulated through the demodulator 132, and the demodulated video signal is demodulated Is input to the image processing unit 150 through the second switching unit 140, processed in a format that can be scaled and displayed, and then displayed on the display unit 160.

In addition, when a recording command is input through the user interface unit 170, the controller 200 outputs a control signal such that a broadcast signal of a channel to be recorded by the user is tuned through the sub tuner 124.

Then, the first switching unit 110 transmits the broadcast signal to the sub tuner 124 according to the control signal of the controller 200.

If the broadcast signal tuned through the sub tuner 124 is an analog signal, the signal is input to the analog decoder 130 and processed. When the digital signal is input to the digital demodulator 140, the digital signal is processed.

The controller 200 monitors the state of the tuned video signal through the sub tuner 124 to determine whether the video signal is normally input or an abnormal video signal is input.

The monitoring of the status of the video signal to be recorded is performed only when the video recording monitoring function is set through the user interface unit 170.

That is, if the broadcast signal tuned through the sub tuner 124 is an analog signal, the PLD 190 detects and re-sets the sync signal of the decoded video signal through the analog decoder 130.

In addition, when an error occurs in the sync information of the detected video signal, the controller 200 compares and determines an anomaly occurrence point, and transmits the result to the controller 200. [

  Accordingly, the controller 200 determines the state of the video signal based on the sync information of the video signal being input through the PLD 190, and when the video signal is abnormal, the OSD generator 210 An OSD type error message of the video signal currently being recorded is displayed on the display unit 160.

That is, the controller 200 periodically receives sync information from the PLD 190 when analog video is recorded, detects whether a sync of the corresponding video signal is detected, detects whether the sync signal is detected within an error range when the sync signal is detected, And monitors the video signal being recorded by judging whether or not the video signal is out of the reference value.

If the broadcasting signal tuned through the sub tuner 124 is a digital signal, the controller 200 determines whether there is an error in the demodulated data signal through the digital demodulator 136, And determines whether or not the error exceeds the reference value based on the error rate and the error duration time.

That is, the controller 200 determines the state of the corresponding video signal based on S / N (Signal to Noise) and FEC (FOWARD ERROR CORRECTION) of the decoded video signal through the digital demodulator 136, Information on the occurrence time of the first abnormal state of the video signal is extracted and stored, and the state of the video signal is informed to the user.

 That is, the OSD generation unit 210 generates an OSD error message of the corresponding video signal according to the control signal of the controller 200, and transmits the generated OSD to the synthesis unit 220.

The combining unit 220 synthesizes and processes the video signal and the OSD input through the video processing unit 150 and transmits the signal to the display unit 160.

At this time, the user determines whether to continue the recording of the video signal being recorded on the display unit 160 based on the message displayed on the display unit 160.

Then, the control unit 200 stops recording according to a user command input based on the displayed message, and controls data deletion or record keeping of an abnormal part.

That is, when a recording stop command is input from the user interface unit 170, the controller 200 controls the OSD to be displayed on the display unit 10, .

If the erasure command is input based on the displayed OSD, the control unit 200 generates an abnormal video signal of the corresponding recording stored in the storage unit 180 based on the information of the time when the abnormal video signal is being generated Delete the part.

The apparatus and method for controlling the video display device according to the present invention periodically monitors the status of a video signal to be recorded by a user and, when an error occurs in the video signal, a corresponding message is displayed on the display unit 160 So that the user can select the deletion of the recorded video and the maintenance of the recording.

Accordingly, it is possible to eliminate a user complaint that occurs when a user records an image recorded on the storage unit 180 due to an abnormal state of the recorded image, and deletes a portion in which the abnormal state of the recorded image occurs, So that the storage space of the storage unit 180 can be efficiently used.

3, when a power-on command is input, the apparatus and method for controlling the video display apparatus according to the present invention displays the received video (S110 to S120).

Subsequently, when a recording command is input, recording is started (S130).

Then, it is determined whether the recorded video surveillance function is set (S140).

If the recording video surveillance function is set as a result of the determination (S140), it is determined whether the video currently being recorded is a digital signal (S150).

If it is determined at step S150 that the currently recorded image is a digital signal, it is periodically determined at step S160 whether the packet error of the video signal satisfies a reference value.

If the packet error of the corresponding video signal is out of the reference value, the first time point at which the video recording error occurs is recorded and the corresponding message is displayed at step S170.

Then, it is determined whether to continue recording the corresponding video signal currently being recorded (S180). That is, it is determined whether the user desires to continue recording or to delete the portion where the recording error occurs.

If it is determined in step S180 that the recording is not to be continued, the corresponding data is deleted based on the information at the time when the first abnormality of the video signal being recorded occurs in step S190.

Then, the recording is ended (S200).

Then, it is determined whether a power off command is input (S210).

If it is determined in step S210 that the power-off command is input, the process returns to step S120.

If it is determined that the recording video surveillance function is not set (S140), normal recording is performed (S220).

If it is determined in operation S150 that the currently recorded image is an analog signal, the sync information of the corresponding image is detected, and it is determined whether the variation of the sync satisfies the reference value (S230).

If it is determined in step S230 that the sync variation of the image is out of the reference value, the process proceeds to step S170.

If it is determined in step S180 that the continuous recording progress command is input, the routine is delayed for a predetermined time in step S240.

If the user inputs a recording end command, the process proceeds to step S200. Otherwise, the process proceeds to step S150.

If the packet error satisfies the reference value or the variation of the sync signal satisfies the reference value (S230), the process proceeds to step S250.

As described above, the apparatus and method for controlling the video display device according to the present invention have the following effects.

First, by grasping the state of another video signal being recorded while the user watches the broadcast signal, the user is notified of the recording of a non-video signal such as a video signal and an image breakdown, This can improve the convenience of editing.

Second, even when the scheduled recording is terminated, the first abnormal occurrence part can be stored and the image can be edited according to the user's judgment.

Third, the efficiency of the storage medium can be improved by deleting the video signal recording which is not normal according to the user's judgment.

Claims (14)

A user interface for receiving a request command from a user; A tuner unit for tuning a broadcast signal of a channel selected by a user among broadcast signals received from the outside; A demodulator for demodulating a broadcast signal selected through the tuner; A storage unit for storing the demodulated broadcast signal; A control unit for controlling the display of the corresponding message by judging the status of the video signal being periodically recorded and controlling the recording status according to a command input through the user interface, ; And, And a display unit for displaying the status of the video signal being recorded and the received live video signal according to the control signal of the controller. The method according to claim 1, Wherein the tuner unit comprises at least one tuner unit. The method according to claim 1, Further comprising a PLD for periodically detecting sync information of the video signal and transmitting the detected sync information to the controller when the broadcast signal to be recorded is an analog signal. The method according to claim 1, Wherein the state of the video signal being recorded is a sync state of the video signal when the analog signal is a digital signal, and the presence or absence of a packet error of the video data is digital signal. The method according to claim 1, Wherein the control unit detects and stores information on a time when the first abnormal signal of the corresponding video signal occurs when the status of the video signal being recorded is abnormal. 6. The method of claim 5, Wherein the control unit deletes a corresponding part in which an abnormal video signal is generated based on information at a time when the first abnormal signal is generated according to a command input through the user interface unit. The method according to claim 1, Further comprising an OSD generating unit for generating a menu screen for OSD to select whether to delete a corresponding part in which an abnormal video signal is generated according to a control signal of the control unit. A method of controlling a video display device having a storage unit, Storing a broadcast signal in the storage unit when a recording command is input; Determining whether a recorded video surveillance function is set; Monitoring the state of the corresponding video signal during the recording in a predetermined period when the recorded video monitoring function is set; And, And selectively controlling deletion or recording of the video signal recorded in accordance with the status of the corresponding video signal. 9. The method of claim 8, Wherein the step of monitoring the status of the corresponding video signal is to monitor the sync information of the corresponding video signal when the corresponding broadcast signal is an analog signal. 10. The method of claim 9, Wherein the step of monitoring the sync information is to monitor the presence / absence of sync detection of the analog video signal and whether or not the sync detection is detected within an error range. 9. The method of claim 8, Wherein the step of monitoring the state of the video signal is to monitor the presence or absence of a packet error of the video data when the corresponding broadcast signal is a digital signal. 12. The method of claim 11, The step of monitoring the presence or absence of a packet error of the corresponding image data may include determining whether an error rate and an error duration of the corresponding image data exceed a reference value based on S / N (SIGNAL TO NOISE) and FEC (FOWARD ERROR CORRECTION) Wherein the recording control method comprises the steps of: 9. The method of claim 8, The step of selectively controlling the deletion or the recording of the video signal recorded according to the status of the video signal may include displaying the corresponding message if the status of the video signal being recorded is abnormal, A step of deleting a corresponding part in which an error has occurred when a deletion command of a recording is input; and a step of maintaining the recording of the corresponding broadcast signal when the corresponding recording state maintenance command is input in the displayed message. A method of controlling recording of a device. 14. The method of claim 13, Wherein the step of deleting the corresponding portion includes extracting and storing information at a time when the first abnormal video signal is generated when the status of the video signal being recorded is abnormal and storing the extracted information at the time when the abnormal video signal is generated And deleting the corresponding portion in which the error has occurred.

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