KR20040090552A - Personal Video Recorder System and Method the Same - Google Patents

Abstract

PURPOSE: A PVR(Personal Video Recorder) system and a method for controlling the PVR system are provided to store and display images already passed without intentionally recording the images. CONSTITUTION: A PVR system includes a tuner(21) for tuning a channel, a demodulator(22) for demodulating a baseband signal of the tuned channel into a transport stream, and a memory(24,26) for storing video and audio signals included in the transport stream in an FIFO(First In First Out) mode. The PVR system further includes a hard disk(27) for storing the video and audio signals, and a controller(25) for reproducing images and sounds corresponding to the video and audio signal stored in the memory from the moment of time when an instantaneous image reproducing mode is set. The controller stores received images and sounds in the hard disk from the moment of time when an instantaneous image reproducing mode is set such that the images and sounds stored in the hard disk are reproduced following the images and sounds reproduced from the memory.

Description

Personal Video Recorder System and Method the Same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal video recorder (PVR) system, and more particularly, to a fibrous system and a control method thereof.

In general, a TV system is a device that stores and plays back like a TV using a storage medium such as a hard disk (HDD) equipped with digital and analog broadcast data, and is built-in with a built-in TV. Or, it can be classified as an external type of set-top box.

As shown in FIG. 1, the built-in type FB system according to the related art transmits a base band signal of a channel tuned through the tuner 11 and a tuner 11 for tuning the channel. A demodulator 12 for demodulating to a port stream TS, a demultiplexer / MPEG decoder / video display processor block 13 to demultiplex the transport stream and to signal-decode and display it according to an MPEG scheme A first memory unit 14 used for image data processing in the demultiplexer / MPEG decoder / video display processor block 13, a CPU 15 for controlling the entire system according to a user command, and a system operating state And a second memory unit 16 for information storage, temporary data processing, and system program storage, a hard disk (HDD) 17 for storing broadcast data, and a display 18. .

Referring to the operation of the prior art configured as described above is as follows.

The broadcast data of the channel corresponding to the user command is displayed via the tuner 11, the demodulator 12, the demultiplexer / MPEG decoder / video display processor block 13 and the display 18.

At this time, if the user wants to record the broadcast video currently being viewed, broadcast data via the tuner 11, the demodulator 12, the demultiplexer / MPEG decoder / video display processor block 13 is displayed on the display 18. It is output on the screen and stored in the hard disk 17 at the same time.

Therefore, when there is a user's command of playing a recorded video, broadcast data stored in the hard disk 17 is displayed through the display 18 via the demultiplexer / MPEG decoder / video display processor block 13.

However, if the user wants to watch the broadcast video excessively momentarily, it is impossible unless the video recording is selected in advance.

Of course, since the storage medium is provided as a hard disk 17, when the image mode is viewed and operated in the recording mode at the same time, the excessive video can be seen again, but the hard disk 17 also has a limitation in continuing to store a large amount of video data and products Since the composition occupies a large portion of the price, there is a problem in terms of efficiency to use it as described above.

Accordingly, an object of the present invention is to provide a fibral system and a control method thereof capable of storing and displaying an image which has already passed without intentional recording.

In order to achieve the above object, a FB system having an instant image recording function according to the present invention includes a tuner for tuning a channel and a baseband signal of a channel tuned through a tuner. A demodulation unit for demodulating data, a memory unit for storing video and audio included in a transport stream in a first in first out (FIFO) method, a hard disk for storing video and audio included in a transport stream, The video and audio stored in the memory unit are played back from the point of time of the instant video play mode setting, and the video and audio received from that point are stored on the hard disk. And a controller for reproducing the voice.

In addition, the method for controlling the FB system according to the present invention for achieving the above object is a step of storing the video and audio received from the power 'on' time of the FB system in the memory, when the instant image playback mode is requested Storing the video and audio received at the same time as playing the video and audio stored in the hard disk, and then playing back the video and audio stored in the hard disk after the playback of the video and audio stored in the memory is completed. It is characterized by.

1 is a block diagram showing the configuration of a FB system according to the prior art

Figure 2 is a block diagram showing the configuration of a FB system according to the present invention

3 is a flow chart showing a control method of the FB system according to the present invention

4 is a timing diagram for describing an instant image recording timing according to FIG. 3.

-Explanation of symbols for the main parts of the drawing-

21: tuner 22: demodulator

23: Demultiplexer / MPEG Decoder / Video Display Processor

24: first memory unit 25: control unit

26: second memory unit 27: hard disk

28: display 30: third memory section

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the fibrous system and the control method according to the present invention in detail.

2 is a block diagram showing a configuration of a fibral system according to the present invention, FIG. 3 is a flowchart showing a control method of a fibral system according to the present invention, and FIG. 4 is a timing diagram of an instant image recording according to FIG. It is a timing chart for explanation.

As shown in FIG. 2, the FB system according to the present invention includes a tuner 21 for tuning a channel and a baseband signal of a channel tuned through the tuner 21. A demodulator 22 for demodulating to TS), a demultiplexer / MPEG decoder / video display processor block 23 for demultiplexing the transport stream and processing the signal to be decoded and displayed according to an MPEG scheme; The first memory unit 24 used for the image data processing in the multiplexer / MPEG decoder / video display processor block 23, and the second memory unit 26 for storing system operation state information, temporary data processing, and system program storage. ), A third memo for storing images processed by the hard disk (HDD) 27 for storing broadcast data and the demultiplexer / MPEG decoder / video display processor block 23. The unit 30 controls the entire system so that the video and audio stored in the third memory unit 30 can be played back from the time point at which the instant video playback mode is set, and the video and audio received from that time are stored in the hard disk 27. And a control unit 25 and a display 28 for reproducing the video and audio stored in the hard disk 27 following the video and audio reproduced from the third memory unit 30.

At this time, the capacity of the instantaneous video memory unit 30 is determined according to the amount of video data to be recorded. In terms of cost, it is not an expensive product such as a hard disk, and a short time that the user has momentarily passed by is not required for long time recording. For example, you need to save only one minute of video every 2 minutes and save it in the FIFO (First In First Out) method to delete the previous stored value. do.

Referring to FIGS. 3 and 4, a method for controlling a fibral system according to the present invention configured as described above is as follows.

First, the instant image recording function of the present invention is set to automatically proceed from the moment when the power of the AV system is 'on'. However, if necessary, the user can release it through the user interface means or release it on the user menu screen, and vice versa.

Therefore, the controller 25 determines whether the power is 'on' (S31), and when the power is 'on', the video and audio data included in the received transport stream are stored in the third memory unit 30 (S32). ).

In this case, as described above, since the third memory unit 30 is a FIFO method, the third memory unit 30 is stored in a set allocation unit (assuming that it corresponds to one minute of video and audio for convenience of explanation) and data is stored in the entire allocation unit. When full, the first stored allocation unit is deleted.

Subsequently, the controller 25 determines whether an instant video playback command is input (S33), and when an instant video playback command is input, the video and audio data currently stored in the third memory unit 30 are played back (S34).

The video and audio data received from the instant video playback command time is stored in the hard disk 27 (S35).

At this time, if the instant video playback command time is t minutes as shown in FIG. 4, the current image (section ② of FIG. 4, one minute from t-1 minutes to t minutes) in the third memory unit 30 is played. At the same time, the image (section ③, section ④) received from the current time point (t minutes) is stored in the hard disk 27.

Subsequently, it is determined whether playback of the video and audio stored in the third memory unit 30 (section ② of FIG. 4 and the video and audio stored in the third memory unit until the instant video playback command point) is completed (S36). The video and audio data (section ③ of FIG. 4) stored in the hard disk 27 is reproduced (S37). That is, it operates in the time shift mode.

At this time, the step (S37) is, after all, the video that the user watches is delayed for a certain time compared to the actual broadcast video. Therefore, the instant video playback is not the video currently being received but the past video. Therefore, when the past video is played back and the video received at the end is played, there is a gap for the past video playback time. Accordingly, the purpose of the present invention is to prevent the blank of the image by storing the image received at the same time as the instant image playback on the hard disk 27 and then playing the image after the end of the instant image playback.

However, if the continuous operation in the instant video playback mode as described above, the user is watching the late video compared to the actual broadcast, and the user may continue to operate the instant video playback mode, but after watching the past video desired by the user You may want to watch.

Therefore, the controller 25 determines whether a time shift end command is input (S38), and when the time shift end command is input, the controller 25 starts to store the image of the hard disk 27 and play back the image stored in the hard disk 27 from that point in time. It stops and outputs the currently received broadcast video and audio, and returns to the step S33.

Of course, while the power is 'on' the video and audio storage operation of the third memory unit 30 continues.

The FB system and its control method according to the present invention have the following effects.

First, the user can increase the user's convenience because the user can view the video that he / she overlooked at any time without intentionally selecting the recording mode.

Second, since the implementation of the present invention can be implemented only by adding low-cost hardware, that is, a small amount of memory, the competitiveness of the product can be improved by increasing the performance without causing a price increase of the product.

Claims (4)

A tuner for tuning the channel; A demodulator for demodulating a base band signal of a channel tuned through the tuner into a transport stream (TS); A memory unit for storing the video and audio included in the transport stream in a first in first out (FIFO) manner; A hard disk for storing video and audio included in the transport stream; The video and audio stored in the memory unit are played back from the time point at which the instant image playback mode is set, and the video and audio received from the time point are stored in the hard disk so that the video and audio can be played on the hard disk. And a fibral system including a control unit for reproducing stored video and audio. According to claim 1, The storage capacity of the memory unit is determined according to the amount of data of the instant image to be reproduced. In a FB system having a hard disk, First In First Out (FIFO) type memory, Storing images and audio received from a power 'on' time of the FV system in the memory; Storing the received video and audio on the hard disk while playing the video and audio stored in the memory when a real-time video playback mode is requested; And And reproducing the video and audio stored in the hard disk, when the playing of the video and audio stored in the memory is completed. The method of claim 3, wherein When the reproduction of the video and audio stored in the memory is completed, determining whether to terminate the hard disk playback in a step of playing the video and audio stored in the hard disk; And outputting the currently received video and audio when the hard disk playback is requested as a result of the determination.