KR20040043793A - video editing method and the device of PVR system - Google Patents

Abstract

PURPOSE: A method and a device for editing the video of a PVR(Personal Video Recorder) system are provided to display/edit data again if necessary by editing a screen of an inputted moving or still image with an underline, a picture, or a text on an OSD(On Screen Display) layer, and storing the edited OSD layer together with the moving or still image. CONSTITUTION: A signal input part(300) inputs a signal when the screen of a touch screen board(320) is touched. A counter(310) calculates the coordinates of the inputted signal. A controller(330) processes the data inputted through the counter and the touch screen board. A communicator(340) transmits the data processed in the controller to a CPU of the PVR system. A playback device(350) displays the signal inputted from a user through the touch screen board on the screen.

Description

Image editing method and device of personal video recorder system

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 video editing method and apparatus for allowing a user to edit and store a video of a PVR or to re-edit a pre-stored video. It is about.

In general, a PVR system receives a signal from a broadcasting station (digital broadcast, analog broadcast, video, etc.) or an external A / V device to a storage device such as a hard disk drive (HDD). A device for storing or reproducing a stored image and outputting the same to a display device.

The PVR system is made possible by the development of computer chip and disk drive technology, and it is a new concept of digital recorder to store in the hard disk. The PVR system has a fixed capacity according to the capacity of the hard disk drive by embedding a hard disk drive (HDD) in the set top box or TV body. It is a next-generation recording device that can record hours of broadcast programs.

For example, when the user reserves a variety of programs while the power is turned on, when the reservation time is reached, the PVR system stores a broadcast signal on the hard disk drive by performing a scheduled recording function using the supplied power. The stored video signal is reproduced and output to the display device.

The PVR system can store several hours to tens of hours of TV programs using a device similar to a computer's hard disk, can record several programs at the same time, stop live broadcasts momentarily, or even seconds or minutes ago. It can be played back from the scene and can be viewed according to the needs of the program without being tied to the schedule of the broadcasting station.

Such a PVR system allows people to exercise more control over TV by organizing program viewing schedules according to their personal choices and tastes.

In addition, in the operation method of the PVR system, all PVRs are connected to a telephone line so that the latest broadcast schedule can be transmitted from time to time and used for reservation recording. The reservation recording procedure is simple enough to select a broadcast list on the screen.

Such a PVR system records information on a hard disk and reproduces the information using a file reproducing method such as a PC.

The appearance of the PVR is similar to that of a conventional VTR or DVD player, and the inside contains a central processing unit (CPU) for playback, a memory chip (ROM) containing an operating system (OS) and playback software, and a large capacity hard disk.

1 is a block diagram showing the configuration of a PVR system.

The PVR system includes a tuner and demodulator (100), an encoder and decoder (110), a storage device (main memory (generally HDD) 120), a playback device (130), It comprises a central processing unit (CPU) 140.

The tuner and demodulator 100 receives an airwave broadcast signal transmitted from a broadcast station through an aerial antenna (not shown), selects and demodulates an input broadcast signal, and receives a video signal and an audio signal from the outside.

The encoder and decoder 110 encodes a signal demodulated by the tuner and the demodulator 100 into compressed data and performs encoding to output the data to a storage device (HDD) 120 that stores data, or the storage device 120 Receives and decodes the data stored in the) to decode so that the video signal and the audio signal can be reproduced through the playback device (130).

The storage device 120 stores data processed by the encoder and decoder 110 and various broadcast program information.

In this case, a hard disk drive (HDD) is generally used as the storage device 120.

In addition, the reproducing apparatus 130 reproduces the decoded video signal and the audio signal.

Here, the central processing unit 140, which is a system controller, is connected to control lines for controlling each component, and the tuner and demodulator 100, the encoder and decoder 110, the storage device 120, and the playback device ( 130) overall control.

The user records or plays broadcast information using the PVR system having the above configuration. For example,

When a user wants to record a cable broadcast or a general over-the-air broadcast while watching, the user presses the number and record button of a broadcast channel to record using an operation panel (not shown) or a remote controller provided in the PVR system.

In addition, when scheduled recording of a broadcast to be watched, the number and broadcast time of the broadcast channel to be recorded are pressed by using a control panel or a remote controller of the PVR system.

By the above operation, the PVR system receives a broadcast signal of a corresponding broadcast channel from a broadcasting station when a recording button is input or a scheduled broadcast time, and demodulates the tuned broadcast signal into an original signal through a demodulator.

The demodulated video and audio signals are compressed by an encoder and stored in a storage device, generally a hard disk drive. When the user presses a play button using a control panel or a remote controller of a PVR system, the demodulated video and audio signals are stored in the storage device. The compressed data is decoded through the decoder to watch the reproduced image through the reproduction device.

Such a PVR system has no difference from a conventional video cassette recorder (VCR) in that a basic function stores and views a program sent from a broadcasting station.

However, unlike VCRs, which store video signals on magnetic tapes, they use hard disks, which eliminates the need for tape management and make it easier to find and edit the desired parts.

In addition, it supports the replay function by default and enables interactive listening to the broadcast service provider.

Best of all, the PVR has a jump-through feature, which allows viewers to press a button at the moment an ad appears on the TV, pre-filled with a pro on the hard disk, including music videos or baseball game highlights.

You can also record digital videos such as camcorders or DVDs and connect them to your PC for editing.

If such a widespread use of the PVR system is generalized, the economic structure of the TV industry as well as people's viewing habits will change rapidly.

However, if the general PVR system is to be used for conferences or presentations or for educational purposes, only the function of recording and playing back images cannot satisfy users.

According to an embodiment of the present invention, after a user directly edits an underlined image, a text, or a text by using an OSD layer on an input video or a still image, the edited OSD layer is stored together with the video or still image. Its purpose is to make it possible to display and work with the data again if necessary.

In addition, when PC input or other external input or TV video signal input, the user stops the desired screen, and the user directly edits data such as text or picture necessary on the still screen using an OSD layer to add additional data to the video. The purpose of this is to increase the value as a material for meetings and presentations and to facilitate user convenience.

1 is a block diagram of a typical personal video recorder system.

2 is a flowchart illustrating a process of a user drawing on a desired screen while viewing an image in a personal video recorder system according to the present invention.

3 is an embodiment of a storage list OSD of data stored in the present invention.

4 is a flowchart illustrating a process of selecting, modifying or deleting data stored in a storage list in a personal video recorder system according to the present invention.

5 is a block diagram of a touch screen control in the present invention.

Figure 6 is a light pen control block diagram in the present invention.

Figure 7 is a remote control control block diagram in the present invention.

<Description of Signs of Major Parts of Drawings>

100 tuner and demodulator 110 encoder and decoder

120: storage device 130: playback device

140: central processing unit 200: storage list

210: save time 220: title

300, 400, 500: signal input unit 310, 410, 510: counter

320: touch screen board 330, 430, 530: control unit

340, 440, 540: communication unit 350, 450, 550: playback device

420: light pen 520: remote control

According to an aspect of the present invention, there is provided a video editing method of a PVR system, the method comprising: reproducing and outputting a received and tuned broadcast signal, an external input video signal, and a previously stored video signal; Selecting the output image signal as a pause image; Executing user editing on the selected still image based on an OSD layer; And storing the video edited by the user with the title.

Editing of the image in the user editing step is characterized in that the combination of the addition of text, lines, pictures, color or background.

Displaying a list of stored images through the user editing, reproducing and displaying a selected edited image on the displayed list, and re-editing and storing the selected edited image; It is done.

The present invention also provides a video editing system of a PVR system, comprising: a tuner / demodulator for tuning and demodulating digital broadcast signals and inputting an external video signal; An encoder / decoder for encoding and decoding the selected and demodulated or externally inputted video signals, prestored video signals, and edited current or prestored edited video signals; A storage device for storing the encoded or edited video signal; A reproduction device for reproducing the current or prestored video signal or edited video signal; User interface means for selecting a video signal for editing and inputting a user's editing command; And a central processing unit that controls selection and editing of an image and storage and reproduction thereof in response to an editing operation input through the user interface means.

The user interface means may be selected from a touch screen for editing an image, a light pen, and a remote controller equipped with a trackball.

The overall hardware structure of the PVR system of the present invention is not significantly different from that of a general PVR system.

However, the user interface means for editing the video of the user and the following algorithm for presenting the video editing are mounted.

2 is a flowchart illustrating a process of a user drawing on a desired screen while viewing an image.

Receives and selects a broadcast signal transmitted from a broadcast station, or receives a video signal through a PC input or an external input (S100).

The user proceeds to the drawing mode by selecting the drawing mode using the operation panel or the remote control of the PVR system (S110).

If the user does not select a drawing mode, the received broadcast signal or the externally input video signal and audio signal which are being viewed are reproduced in real time through a reproducing apparatus (S150).

When the user enters the image editing step by selecting the drawing mode, the desired image is stopped from the image being viewed, and the user edits text, pictures, or text on the OSD layer on the still image (S120).

If the user wants to save the still image and the OSD layer, the drawing operation is stored by pressing the save button through the operation panel or the remote control of the PVR system (S130, S140).

If the user does not select the storage, the received broadcast signal or the externally input video signal and audio signal which are being watched are reproduced in real time through the reproducing apparatus (S150).

However, when the user selects the save by pressing the save button through the operation panel or the remote controller, the save list OSD is displayed on the screen and the save is completed by inputting the still image and the title of the OSD layer (S140).

As a method of inputting the title of the edited video, the title of the material may be input by selecting a suitable character by pressing a cursor key or the like of the remote controller.

After the storage operation is completed, the received broadcast signal or the externally input video signal and audio signal which are being watched are reproduced in real time through the reproducing apparatus (S150).

3 is an embodiment of the storage list OSD of each data stored through the above operation.

The still image and the OSD layer are uploaded to the storage list 200 in the order of saving, and when the storage time 210 is selected, the present invention automatically uses a timer built in the PVR system. The time is set and entered.

In addition, each title 220 may be input and stored, and may be modified at any time by a user's desired name, and the still image may be stored in order to modify or delete each material stored in the storage list 200. In order to play back the OSD layer again, the corresponding video can be played by selecting the corresponding title from the storage list OSD through the control panel or the remote controller of the PVR system.

4 is a flowchart illustrating a process of selecting, modifying or deleting data stored in a storage list.

As described above, the user receives and tunes a broadcast signal transmitted from a broadcasting station, receives a video signal and an audio signal from outside, draws and saves the image on a desired screen while watching the video, and then stores the stored data again. If you want to edit it or delete it, you can work through the following steps.

First, the storage list view is selected by pressing a storage list view button or a key through an operation panel or a remote controller of the PVR system (S200).

If the user does not select the storage list view, the received broadcast signal or the externally input video signal and audio signal which are being watched are reproduced in real time through the playback device (S291).

If you select the storage list view, the storage list OSD is displayed on the screen (S210).

The user wants to modify or delete the selected material in the displayed storage list OSD using the arrow keys or the cursor on the operation panel or the remote controller of the PVR system (S220).

Here, when the user does not select the item to be re-edited from the save list, the broadcast or the input video which is being watched again is reproduced on the screen (S291).

When the list is selected, the user selects the data selected by the user from the storage list, that is, the still image and the data drawn on the OSD layer of the still image (S230).

At this time, if there is data that the user wants to delete from the storage list, the user can delete the corresponding still image and the OSD layer from the storage list by pressing the delete button (S240, S250).

The deletion operation may be directly performed on the storage list OSD via an operation panel or a remote controller. After the deletion operation is completed, the storage list OSD is displayed (S250 and S210).

After displaying the stored image and the OSD layer to modify the data in the storage list, the user proceeds to the drawing mode (modification) by selecting the drawing mode (modification) (S260).

If the user does not select a drawing mode, the received broadcast signal or the externally input video signal and audio signal which are being watched are reproduced in real time through a reproducing apparatus (S291).

When the user selects a drawing mode and enters an image re-editing process, the user draws a text, picture, or text OSD on the OSD layer on the displayed still image (S270).

If you want to save the still image and the OSD layer modified through the drawing operation, by pressing the save button (S280).

If the user does not select storage, the received broadcast signal or the externally input video signal and audio signal which are being watched are reproduced in real time through the playback device (S291).

When the user presses the save button to save, the save list OSD is displayed on the screen to input or modify the still image and the title of the OSD layer to complete the saving (S290).

As a method of inputting the title, the title of the data can be input by selecting each character by pressing a control key of a PVR system or a cursor key of a remote controller.

After the storage operation is completed, the received broadcast signal or the externally input video signal and audio signal which are being viewed are reproduced in real time through the reproducing apparatus (S291).

As described above, in the PVR system according to the present invention, the user can draw a character, picture or text directly on the OSD layer on the still image by stopping the desired screen while watching TV or by a video input by an external input. Save the layer with a title on your hard disk.

The data stored as above are managed in a list and the desired data can be selected and displayed through a search, and unnecessary data can be deleted, and if necessary data are stored in the stored list, the images stored by selecting from the list are stored. You may be able to modify the OSD again by displaying the and OSD layers.

At this time, in order to draw on the OSD layer on the still image desired by the user, there is a method using a touch screen, a light pen, a remote control having a trackball, and the like.

First, a drawing operation is performed using a touch screen.

The touch screen is a display screen that responds to human contact without any input device, and is designed to move or select a cursor using a hand directly on the screen.

The touch screen is programmed to draw a picture with a finger. When the user touches a finger on the monitor, the screen recognizes its position and movement and draws a predetermined color and line.

It is installed so that the invisible infrared light flows up and down on the surface of the screen so that numerous rectangular grids are formed on the screen.

By using the coordinates, the OSD can be displayed at a position of 1 to several pixels, so that the user can draw a desired drawing.

5 is a control block diagram for drawing using the touch screen.

A touch screen board 320, a signal input unit 300 for inputting a signal when a screen is touched, a counter 310 for calculating coordinates of the input signal, the counter 310 and a touch screen board ( The control unit 330 for processing the data input through the 320, the communication unit 340 for transmitting the data processed by the control unit 330 to be processed by the central processing unit of the PVR system, and through the touch screen And a reproducing apparatus 350 for reproducing the signal input by the user to the screen.

Another way to draw the OSD on a still image is to use a light pen.

Since the light pen has a sensitive phototransistor built-in to read the electron beam of the screen, when the light pen reaches a specific position on the screen, the light pen detects the passing of the scanning light of the screen and detects the current position. have.

Therefore, the dot appears along the point where the light pen touches the screen and the line is drawn as it moves. Thus, like the touch screen, the device can write or draw letters or draw on the screen like a pencil.

6 is a control block diagram for drawing using the light pen.

A light pen 420 having a photo transistor built therein; a signal input unit 400 for inputting a signal when the screen is touched by the light pen 420; a counter 410 for calculating coordinates of the input signal; The controller 430 processes the data input through the counter 410 and the light pen 420, and the communication unit transmits the data processed by the controller 430 to be processed by the central processing unit of the PVR system. 440 and a reproducing apparatus 450 for reproducing the signal input by the user through the light pen to the screen.

In addition to drawing an OSD on a still image using the touch screen and the light pen, there is a method using a remote controller.

The remote controller is equipped with a track ball like a mouse used in a computer system, and operates the remote control equipped with the track ball to move the pointer on the screen to communicate with the TV SET by wire or wirelessly to determine the position of the pointer. One device to help.

7 is a control block diagram for drawing using the remote controller.

A remote controller 520 equipped with a trackball, a signal input unit 500 for inputting a signal when a pointer on the screen is moved by the remote controller 520, a counter 510 for calculating coordinates of the input signal, and the counter. A controller 530 for processing data input through the 510 and the remote controller 520, a communication unit 540 for transmitting the data processed by the controller to be processed by the central processing unit of the PVR system, and the remote controller The playback device 550 allows a signal input by the user to be reproduced on the screen by using 520.

As described above, the PVR system according to the present invention allows the user to directly draw a character, picture or text directly on the OSD layer on a still image by stopping the desired screen while watching TV or by a video input by an external input. You can select and display the material, and re-display the saved video and OSD layer to modify the OSD so that you can organize the video material more conveniently and easily than before to use it for conferences or presentations. It works.

In addition, another effect is to freeze the user's favorite screen, for example, a favorite entertainer or a nice wallpaper while watching TV, by drawing a picture or entering text on the OSD layer on the stopped screen. It can be stored together with your personal data.

In addition, by opening a screen required for learning for education, drawing on it, entering characters or inserting text and storing it, it is possible to display this material again if necessary, thereby increasing the educational effect.

Claims (5)

Reproducing and outputting a received and tuned broadcast signal, an external input video signal, and a previously stored video signal; Selecting the output image signal as a pause image; Executing user editing on the selected still image based on an OSD layer; And storing the video edited by the user together with the title thereof. The method of claim 1, The image editing method of the PVR system, characterized in that the editing of the image made in the user editing step is a combination of text, lines, and pictures, color, and background. The method of claim 1, Displaying a list of stored images through the user editing, reproducing and displaying a selected edited image on the displayed list, and re-editing and storing the selected edited image; Image editing method of a PVR system. A tuner / demodulator for tuning and demodulating digital broadcast signals and for inputting external video signals; An encoder / decoder for encoding and decoding the selected and demodulated or externally inputted video signals, prestored video signals, and edited current or prestored edited video signals; A storage device for storing the encoded or edited video signal; A reproduction device for reproducing the current or prestored video signal or edited video signal; User interface means for selecting a video signal for editing and inputting a user's editing command; And a central processing unit for controlling selection and editing of images and storing and reproducing the images in response to the editing operation input through the user interface means. The method of claim 4, wherein And the user interface means is selected from a touch screen for editing an image, a light pen, and a remote controller equipped with a trackball.