KR100427476B1 - Method for control playback of a digital video - Google Patents

Abstract

The present invention relates to a playback control method of a digital video that can be jumped to an arbitrary point of the digital video being played back and that the digital video can be played again from the point where viewing was stopped after a time delay. Checking whether it is received; Playing the selected digital video upon receiving a play command; Checking whether a jumping command is received during playback; Calculating a point indicated by the received jumping command from the total length of the video being played; And reproducing the video data after the calculated point.

Description

How to control digital video playback {METHOD FOR CONTROL PLAYBACK OF A DIGITAL VIDEO}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital video playback system, and more particularly, to a method capable of jumping to an arbitrary point of a digital video being played back, as well as playing back digital video from a point where viewing is interrupted after a time delay.

As technology advances, the boundaries between TV and personal computers are gradually falling apart. That is, products that can implement the functions of a computer and a TV as one complex product are introduced one after another. This may be referred to as an independent Internet TV, or may be implemented by having a personal computer with software or hardware for watching TV broadcasts. Many users download and use various information on the Internet through such advanced computer terminals. A typical example is the case of downloading and watching files such as digital video (mpg, DivX ..).

However, when playing the downloaded digital video, there are many restrictions in the current computer terminal. For example, if the size of the video to be played is huge, the user may wish to search for a point to be watched by fast searching the play section as needed, and then play from the point. However, since the current computer terminal does not support such a search function, it is inconvenient to watch digital video playback from the user's point of view.

In addition, if the user stops the seat when necessary while watching the digital video playback, the user may feel inconvenient to watch the digital video playback since the same video can only be played again from the beginning.

Accordingly, an object of the present invention is to provide a method for controlling playback by jumping to an arbitrary point in front of or behind a digital video currently playing in a digital video player such as a computer system.

It is another object of the present invention to provide a method in which playback can be made from a point where it stopped or immediately before the digital video viewing is stopped and resumed.

1 is a block diagram of a digital video playback system according to an embodiment of the present invention.

FIG. 2 is a detailed configuration diagram of the digital video reproduction system shown in FIG. 1.

3 is a digital video reproduction control flowchart according to an embodiment of the present invention.

4 is a digital video reproduction control flowchart according to another embodiment of the present invention.

5 is a digital video reproduction control flowchart according to another embodiment of the present invention.

A digital video playback control method according to an embodiment of the present invention for achieving the above object comprises the steps of: checking whether a playback command of a digital video selected by a user is received; Playing the selected digital video upon receiving a play command; Checking whether a jumping command is received during playback; Calculating a point indicated by the received jumping command from the total length of the video being played; And reproducing the video data after the calculated point.

Accordingly, the computer system user can conveniently play back and watch the video data of the desired point.

In addition, the present invention comprises the steps of checking whether the storage command received during the digital video playback; Storing an end point of a video being played when an end command is received after receiving the memory command; And reproducing the data immediately before the last stored end point so that the video data of the last stored end point is reproduced when the play command is received in the standby mode.

Accordingly, the user can enjoy the convenience of viewing the video from the point where the playback was paused by simply inputting a playback command after a predetermined time delay after the playback was paused.

The present invention also provides a method of displaying a list of video titles or file names of previously stored end points upon receiving a storage command in a standby mode; And performing video playback from the selected title or the end point of the file when selecting one file or title from the displayed list.

Therefore, if many users have saved the end points without viewing the rest of time due to the limitation of time after many users watched only a part of a different video title or a file, the user simply stops watching by simply entering a memory command. It is convenient to select one file or title and play the rest.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. For reference, an embodiment of the present invention will be described by taking a computer system capable of playing digital video according to a remote controller as an example of a digital video player.

1 is a block diagram of a digital video playback system according to an embodiment of the present invention. A digital video playback system according to an embodiment of the present invention is largely connected to the computer system 100 as shown in FIG. Remote control unit 450 is largely composed of a wireless signal transmitter 200 and a wireless signal receiver 300 connected to a display device such as a TV receiver 400, and selects, plays, and stops a video to be played at a remote location. It further includes. The radio signal transmitter 200 and the radio signal receiver 300 constitute a radio signal relay device, and are added to overcome the limitation of the computer system 100, that is, it cannot provide a high definition and high quality image. By way of example, the present invention may be implemented by the computer system 100 without the provision of such a wireless signal relay. The radio signal relay device has been filed by the applicant of the Korean Patent Office in November 2001 under the name of "wireless signal remote relay device".

For reference, the wireless signal transmitter 200 shown in FIG. 1 inputs video and audio signals reproduced and output from the connected computer system 100, modulates and amplifies them, and then wirelessly transmits RF signals of a predetermined band through an antenna. It plays a role.

Meanwhile, the wireless signal receiver 300 demodulates an RF signal of a predetermined band received through an antenna, detects only the video and audio signals, and separates the detected video and audio signals. And outputs to the audio and video terminals of the TV (400). The wireless signal transmitter 200 and the wireless signal receiver 300 wirelessly transmit and receive video or audio signals reproduced by the computer system 100 at a frequency of 2.4 GHz band.

FIG. 2 is a detailed configuration diagram of the digital video playback system shown in FIG. 1, and wirelessly relays video and audio signals reproduced by the computer system 100 to a large-screen, high-definition TV receiver at a short distance. It shows a wireless signal relay device for. The computer system 100 according to an exemplary embodiment of the present invention further includes an RF transmitter 400 (remote control) for receiving a wireless input from a user who is spaced apart from a video file (or title) to be played.

Referring to FIG. 2, the wireless signal transmitter 200 receives a video / audio signal reproduced and outputted from a connected computer system 100, modulates and amplifies the video / audio signal, and wirelessly transmits an RF signal of a predetermined band through an antenna. Do this. To this end, the wireless signal transmitter 200 may include an interface unit 205 for receiving video and audio signals reproduced and output from the computer system 100, and a signal input through the interface unit 205 from the oscillator 210. And a modulator 220 for modulating and outputting an RF signal of a predetermined band (2.4 GHz) according to the oscillated frequency, an amplifier 230 for level amplifying and outputting the modulated signal, and an antenna.

Meanwhile, the wireless signal receiver 300 demodulates an RF signal of a predetermined band received through an antenna and demodulates 320 for detecting only the video and audio signals, and a TV connected by separating the detected video and audio signals. A / V separation unit 330 for outputting to the audio and video terminal of the receiver (for example HD TV) 400 is provided. The wireless signal relays 200 and 300 wirelessly transmit and receive video signals and audio signals reproduced by the computer system 100 at a frequency of the 2.4 GHz band.

Meanwhile, the communication unit 110, which is a component of the computer system 100, serves as a modem to connect the computer system 100 to the Internet and to modulate and demodulate and output data transmitted and received with another system (such as a server). . The controller 120 is a CPU that controls the overall operation of the system as in a general PC, and controls the overall operation of the system based on control programs and application programs stored in the memory 160 and the HDD 140. For example, the controller 120 controls playback of a video file (or title) through a control process as shown in FIGS. 3 to 5. This will be described in detail later. The CD reproducing unit 130 displays a reproducing unit of the optical recording medium, and plays a role of reproducing information recorded on the optical recording medium such as a video CD and a DVD under the control of the control unit 120. The HDD 140 is a secondary memory device of a computer system, and stores a plurality of video files and music files, and reads selected files under the control of the controller 120.

The monitor 150 may also be replaced by an LCD as a display device of a general computer system and displays display data according to the control of the controller 120. The memory 160 includes a RAM, a ROM, and an EEPROM. The memory 160 temporarily stores data generated during a system control operation and stores control program data. The interface unit 170 interfaces signals transmitted and received between the computer system 100 and the wireless signal transmitter 200 or the RF signal receiver 180 which is a wireless signal relay. The interface unit 180 includes a speaker connection terminal for outputting an audio signal, a video output terminal, and a serial port, and includes hardware components such as a graphics card and a sound card. In addition, although not shown in FIG. 1, the computer system 100 includes software components such as an operating system (OS) and a web browser as in a typical PC.

For reference, the RF signal receiver 180 connected to the computer system 100 through a serial port or USB demodulates an RF signal transmitted from a remote controller, which is an RF transmitter 400, to play a video file, jump a command, and store a command. It extracts and outputs only control key data. In addition, an RF transmitter (also referred to as an RF remote controller or simply a remote controller) 400 for generating key data for controlling the files stored in the computer system 100 at a short distance and modulating the signals into RF signals of a predetermined band and transmitting them wirelessly is described above. Along with the RF signal receiver 110 is provided as an accessory device of the computer system 100 or the wireless signal relay device (200,300).

Hereinafter, a method of controlling reproduction of digital video in a system having the above-described configuration will be described in more detail.

First, FIG. 3 is a flowchart illustrating a digital video playback control according to an embodiment of the present invention. More specifically, FIG. 3 specifically illustrates a process of controlling a playback to be performed by jumping to a desired position during a digital video playback. will be.

Prior to describing the digital video reproduction control method shown in FIGS. 3 to 5, a process of transmitting various control commands transmitted from the remote controller 400 to the computer system 100 will first be briefly described. In this idle mode, the desktop displayed on the monitor 150 of the computer system 100 is transmitted to the TV receiver 400 through the wireless signal transmitter 200 and the wireless signal receiver 300, thereby providing two display devices. The same screen is displayed at 150,400. In this state, if the PC user selects a video file of a specific directory in the directory list using the RF transmitter 400 and issues a playback command, the key control data is demodulated in the RF signal receiver 180 and then the computer system ( As transmitted to the control unit 120 of 100, the control unit 120 starts to play the selected video file.

That is, in FIG. 3, when the control unit 120 selects a video file through the RF signal receiving unit 180 (step 500) and then receives a playback command (step 510), the controller 120 plays the video file selected by the user (step 520). To start. As described above, when a jumping command is received from the user while playing a DVD or video CD through the predetermined video file or the CD player 130 (step 530), the controller 120 plays a point indicated by the received jumping command. Calculation is made from the total length of the video being played, and then video data after the calculated point is reproduced (step 540). The user may input a jumping command using the numeric buttons provided on the remote controller. In this case, if information of a point to be jumped from the start position of the video being played is mapped to the numeric button manipulation data generated by the numeric button manipulation, the controller 120 may perform video data after the point based on the mapped information. The HDD 140 or the CD reproducing unit 130, which is an auxiliary memory device, may be controlled to reproduce the data. For example, number button 1 is mapped to move to 10% of the total length of the video file (or title) that is playing, and number button 2 is mapped to move to 20% of the total length of the video file being played. As such, when information of a point to be jumped is mapped to each number button, the control unit 120 may move back and forth of the video file being played each time a user inputs a jumping command. When the end command is received (step 550) during the reproduction control operation, the reproduction control method of the digital video according to the embodiment of the present invention is terminated.

Therefore, the present invention allows a user to conveniently select and play back video data of a desired point even in a computer system.

4 is a flowchart illustrating a digital video playback control flow according to another embodiment of the present invention. More specifically, when a video is interrupted and resumed, the video is reproduced at a stored point after storing the interrupted point. A digital video playback control method. FIG. 5 is a flowchart illustrating a digital video playback control according to another embodiment of the present invention. More specifically, in the case where several users use one computer system 100, each user views a video. The present invention relates to a digital video playback control method for supporting a playback from a point where it is stopped again after a predetermined time delay after the interruption.

First, referring to FIG. 4, when the controller 120 selects a video file through the RF signal receiver 180 (step 600), and then receives a playback command (step 610), the controller 120 plays the video file selected by the user (620). Step). As described above, if the memory button (step 630) and the end command (step 640) are sequentially input from the user while playing the DVD or the video CD through the predetermined video file or the CD player 130, the video file being played (or The end point of the title) is stored in the memory 160 (step 650). In this case, since the playback operation of the video is stopped, it may be defined as a standby mode. In the standby mode, if a playback command is simply received (step 660), the controller 120 proceeds to step 670 to play the data immediately before the last stored end point (10 seconds ago) so that the video data of the last stored end point is played. The HDD 140 or the CD player 130 is controlled to achieve this. In this case, playback may be performed from the stored end point. When the end command is input, time information or position information of the end point of the entire video file being played is known through a time table (optical recording medium) or an index table (magnetic recording medium). Then, the stored time information or position information is used. To play the video.

Therefore, the user can watch the video after the point where the playback is paused after a predetermined time delay after the playback is paused by simply inputting a playback command.

Finally, referring to FIG. 5, when the memory command is received through the RF signal receiver 180 in the standby mode (step 710), the controller 120 displays a list in which video titles or file names of previously stored end points are written ( Step 720). As shown in FIG. 4, when all members of the family play and watch a video file according to their preferences, if the end point is saved after stopping due to circumstances, a plurality of end points are stored in the memory 160. In this case, unless the list of stored video files can be displayed and selected, the digital video reproduction control method as shown in FIG. 4 may be a meaningless function. To compensate for this, as shown in the file list of the memoryd end point as shown in step 720, the user will select any file or title from the displayed list, and the control unit 120 can determine that a file is In step 730, the controller 140 proceeds to step 740 to control the HDD 140 to play the video from the end point of the selected file.

Therefore, even if many users have saved the end points after watching different video titles or parts of files but have not watched the rest of the time due to time constraints, they simply enter a memory command and stop watching the files. Or you can select a title and play the rest of it.

For reference, in the embodiment of the present invention, the end point stored in the memory 160 may be collectively or selectively erased upon selection of any one of the numeric buttons provided in the remote controller.

As described above, the present invention has the advantage that a user can conveniently select and watch video data of a desired point even in a computer system, and stops by simply inputting a playback command after a predetermined time delay after pausing playback. There is the convenience of continuing to watch the video after the point, and simply enter the memory command to select the file or title that you stopped watching the convenience of continuing to play the rest of the view.

On the other hand, the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (5)

A digital video reproduction control method of a computer system connected to a receiving unit for receiving a remote control command and reproducing a digital video stored in a storage unit and outputting the digital video to a display unit. Checking whether a playback command of the selected digital video is received; Playing the selected digital video upon receiving a play command; Checking whether a jumping command is received during playback; Calculating a point indicated by the received jumping command from the total length of the video being played; And reproducing video data after the calculated point. The digital video according to claim 1, wherein the jumping command is generated by a numeric button operation of the remote controller, and the received numeric button manipulation data is mapped with information of a point to be jumped from a start position of a video being played. Regeneration control method. The method of claim 1, further comprising: checking whether a memory command is received while playing the digital video; Storing an end point of a video being played when an end command is received after receiving the memory command; And reproducing the data immediately before the last stored end point so that the video data of the last stored end point is reproduced when the play command is received in the standby mode. The method of claim 3, further comprising: displaying a list of video titles or file names of previously stored end points when a storage command is received in the standby mode; And executing video playback from the selected title or the end point of the file when selecting one file or title from the displayed list. The method according to claim 3 or 4, wherein the stored end point is erased upon selection of any one of the numeric buttons provided in the remote controller.