KR20030096493A - Method for displaying a thumbnail picture in optical disc driver - Google Patents

Abstract

PURPOSE: A method for displaying a thumbnail picture in an optical disk device is provided to easily discriminate a plurality of thumbnail pictures by sequentially arranging the thumbnail pictures. CONSTITUTION: An optical disk is played(S10). A predetermined search key is inputted by a user for searching for an image(S11). A microcomputer controls to read I pictures(S12). The read I pictures are transformed into thumbnail pictures by a digital signal processor(S13). The thumbnail pictures are stored in a memory, being connected with position information of the corresponding I pictures(S14). The microcomputer judges whether another thumbnail pictures previously transformed exist(S15). If not, the currently transformed thumbnail pictures are output to a display to be displayed on a predetermined area of the display(S16). If so, the previously transformed thumbnail pictures are shifted to display the currently transformed thumbnail pictures(S17). The user inputs an external command selecting a specific thumbnail picture(S18). The microcomputer controls to play the optical disk from an area where the corresponding I picture is placed based on an address stored connectedly with the selected thumbnail picture(S19). The microcomputer judges whether the corresponding I picture is the last I picture(S21). If so, the microcomputer controls to play the optical disk from an area where the initial search key is inputted(S22).

Description

Method for displaying a thumbnail picture in optical disc driver}

The present invention relates to a method of displaying a reduced image in an optical disk device that reads out a base image at specific intervals and converts the image into a reduced image when the search function is performed, and sequentially displays the image on the display.

In general, an optical disc device such as a DVD (Digital Versatile Disc) player reproduces video or audio data recorded on an optical disc and outputs the same to a display device such as a monitor or a television.

As shown in FIG. 1, the optical disk apparatus processes RF (Radio Frequency) signal processing of the optical pickup 11 for reading data recorded on an optical disk such as a DVD and the data read by the optical pickup 11. An RF processor 12, a digital signal processor 13 for processing a reproduction signal input from the RF processor 12, and a sled motor 14 for moving the optical pickup 11. And a spindle motor 15 for rotating the optical disk, a drive driver 16 for driving the sled motor 14 and the spindle motor 15, and the optical driver 11 while controlling the drive driver 16. Servo controller 17 for tracking control or focusing control for the control panel), a microcomputer 18 for performing overall control, and a memory 19 for storing various processing data required by the microcomputer 18.

When the play command is input from the outside, the optical disc device reproduces the data recorded in the program area based on the playlist information recorded on the optical disc and transmits the data to the display device.

On the other hand, the optical disk device provides a function that allows the user to arbitrarily select and play the image of the desired position by displaying various menus provided by the optical disk at the request of the user.

In addition, the optical disk apparatus is provided with a function of forcibly changing a playback position or playing back from a specific region according to an input signal of a specific key. When a playback time is input by a user, the optical disk apparatus refers to the playback information provided from the optical disk to correspond to an optical disk. Play from the area.

In addition, the optical disc apparatus provides a function of playing a file by changing a playback speed according to a user's request, and such a double speed playback is mainly provided to allow a user to quickly search a lot of video information. The search is usually performed for a predetermined data unit, such as a group of picture (GOP), which is previously promised.

However, when the search function is requested by the user, the optical disk device as described above reads the image information at regular intervals, converts the image information into a still image, and displays the output on the display device. There is a problem that the user is not properly recognized because it changes to the image.

Accordingly, the present invention has been made to solve the above problems, and when the search function is requested by the user, the optical disk device converts the previously played base image into a reduced image and displays them sequentially on the display. The purpose of the present invention is to provide a method for displaying a reduced image.

1 illustrates a configuration of an optical disk apparatus to which a reduced image displaying method according to the present invention is applied.

2 is a flowchart illustrating an operation of displaying a reduced image in an optical disk device according to the present invention;

3 illustrates a path in which pickup according to the present invention searches for each I-picture,

4 illustrates a memory map table of a reduced picture of an I-picture and an I-picture address stored in association with the same according to the present invention;

5 illustrates that the downscaled images according to the present invention are sequentially displayed on the display.

※ Explanation of code for main part of drawing

11: pickup 12: RF

13: digital signal processor 14: sled motor

15 spindle motor 16 motor driver

17: servo controller 18: microcomputer

19: memory

In the optical disk device according to the present invention for reducing the image to achieve the above object, if a search function is selected during playback, the previously played base image is sequentially searched and converted into a reduced image and the position of the base image Step 1 of storing and linking the information, and step 2 of sequentially displaying and displaying each converted image on the display, and when any of the reduced images displayed on the display is selected, the base image stored in association with the corresponding reduced image With reference to the position information of the, characterized in that it comprises three steps of performing a playback operation from the recording position.

Hereinafter, a method of displaying a reduced image in an optical disk device according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a flowchart illustrating a method of displaying a reduced image in an optical disk apparatus according to the present invention. Since the hardware configuration is very similar to that of the general optical disk apparatus described above, the operation according to the present invention will be described with reference to the components of FIG. 1. Explain.

First, when the optical disk is seated on the deck and a playback command is input by the user, the microcomputer 18 outputs a control signal to the servo controller 17, and the servo controller 17 based on the control signal. It is to drive control 16. The motor driver 16 drives the sled motor 14 and the spindle motor 15 so that the optical disk rotates at a constant speed and the pickup 11 seeks a predetermined position.

Subsequently, the pickup 11 reads data from the optical disc, and the read data is digitally processed by the digital signal processing unit 13 and then transmitted to a display apparatus via a predetermined interface to perform a normal optical disc reproducing operation ( S10). At this time, the microcomputer 18 stores the corresponding position information in the memory 19 whenever the I-picture is reproduced.

If a predetermined search key for image search is input by the user while the above playback operation is performed (S11), the microcomputer 18 controls to stop the playback operation at the present time and the current search key is input. The position information of the viewpoint is stored in the memory 19, and a control signal is output to the servo controller 17 on the basis of the position information of each I-picture previously stored in the memory 19, and the previously reproduced I- The pickup 11 is moved to an area where the picture exists to control reading of the I-picture (S12). The servo controller 17 moves the pickup 11 to the point where the I-picture on the track is located as shown in FIG. 3 under the control of the microcomputer 18.

The I-picture read by the pickup 11 is converted into a reduced image by the digital signal processor 13 (S13) and stored in sequence in association with the position information of the corresponding I-picture (S14). The reduced image and the address stored in the are stored in correlation with each other as shown in FIG.

It is also possible to store the read-out I-pictures in the memory as it is and to change the image into a reduced image form upon display. In addition, in order to perform an operation such as playback, capture, etc. from a screen according to a user's selection, and displaying the reduced images in order as described above, in the present invention, the address of the picture is stored when the reproduced I-picture is stored. It is linked together and stored.

The converted reduced image is outputted and displayed on a display device. Before displaying the converted reduced image on the display device, the microcomputer 18 determines whether a previously reduced image is present (S15). If the converted reduced image does not exist, for example, when the first I-picture is converted to the reduced image, the previously converted reduced image does not exist. Therefore, the currently converted reduced image is output to the display device to display a predetermined area of the display device. Control to be displayed (S16). The reduced image obtained by converting the first I-picture is preferably located at the upper right side of the display as shown in FIG.

Meanwhile, as described above, at any time while the base image is converted into a reduced image and displayed, the user selects the currently displayed reduced image, or stops the current search function or releases the stopped search function. Or an external command such as performing a normal playback operation.

When a command for selecting a thumbnail image currently displayed by the user is input, the microcomputer 18 releases the search function immediately and currently has one thumbnail image, so that the microcomputer 18 is connected to the selected thumbnail image to the memory 19. By controlling the servo controller 13 based on the stored address, the pickup 11 performs movement control so that the pickup 11 can read out the corresponding I-picture. If there are a plurality of reduced images will be described in detail below.

When the external command to stop the current search function is input, the microcomputer 18 immediately stops the current search function, enters the standby state, and waits for the external input of the user inputted thereafter. If an external command to release the suspended state is input, the search function is performed again from the point of time when the search function is stopped as described above, and if a playback command is input, the search function is input based on the position information of the time point at which the search key is input. The playback operation is performed.

On the other hand, if the microcomputer 18 converts the previously reduced image in the state where the current reduced image is converted (the previously reduced image may be one, or may be a plurality), the previously reduced image Alternatively, the display position of the reduced images is spatially moved by a predetermined distance to control display of the currently converted reduced image on the upper right side.

The process of displaying one or more reduced images on the display is shown in detail in FIGS. 5A, 5B and 5C. The first converted reduced image is shown in FIG. 5A. As shown in (B) and (C) of FIG. 5, the reduced images displayed on the upper right side of the display as shown in FIG. 5 are shifted while maintaining a predetermined interval spatially, and then sequentially adjacent to each other. List is displayed. In particular, (C) of FIG. 5 illustrates a case in which the number of all reduced images that can be simultaneously displayed on the display is limited to, for example, eight, and is displayed before the leftmost lower image (TU-pic2). The reduced image (TU-pic1), which has been converted to the reduced image and displayed, is shifted and does not appear on the display.

As described above, a process of converting the searched I-picture into a reduced image, storing the converted reduced image and the address of the I-picture, and sequentially displaying each reduced image on the display is performed by a user. As long as there is no external input, it progresses to the last I-picture on the track. The microcomputer 18 determines whether the corresponding I-picture is the last I-picture every time the I-picture is converted to a reduced image (S20). When the above-described series of processing is completed up to the I-picture, the normal playback operation is performed from the area where the first search key is input by the user (S21).

On the other hand, when the external command for selecting a specific reduced image is input by the user in the state that the reduced image is displayed on the display as described above (S18), the microcomputer 18 and the selected reduced image (TU-pic8) On the basis of the associated stored address, control is performed to perform a normal reproduction operation from the region where the corresponding I-picture is located (S19). In this case, in order to select one thumbnail image among the plurality of thumbnail images to be displayed by the user, the user should be configured to indicate and specify an arbitrary thumbnail image, so that a predetermined direction shift key for moving and selecting the thumbnail image is selected. Preferably, a selection key may be provided, and whenever a direction movement key is input, a neighboring reduced image in a corresponding direction may be indicated from a currently displayed reduced image, and the selected reduced image may be selected using the selection key. It is desirable to configure so that.

The above-described preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art can improve, change, and substitute various other embodiments within the technical spirit and scope of the present invention disclosed in the appended claims below. Or in addition to that.

According to the present invention constituted as described above, when the search function is selected during playback, the previously played base image is converted into a reduced image and displayed on the display, so that a plurality of reduced images are sequentially displayed on one screen. This is a useful invention that enables the user to easily determine the reduced image as well as to easily select and play any reduced image among the displayed reduced images.

Claims (3)

If a search function is selected during playback, step 1 of sequentially searching for a previously played base image, converting the base image into a reduced image, and storing the base image in association with the position information of the base image; Step 2 of sequentially displaying the converted reduced images on a display; And And selecting a reduced image from among the reduced images displayed on the display, referring to the position information of the base image stored in association with the reduced image, and performing a playback operation from the recording position. A method of displaying a reduced image on an optical disk device. The method of claim 1, And a search direction of the base image is opposite to a playback direction. The method of claim 1, And if the number of the reduced images currently listed on the display has a certain number, when displaying a new reduced image, the first reduced image is not displayed.