KR20000028458A - Method for displaying information of optical disk changer - Google Patents

Abstract

PURPOSE: A method for displaying information of optical disk changer is provided to enhance a convenience in use by displaying next information while a plurality of disks are successively reproduced. CONSTITUTION: An optical disk player returns a tray roulette to an original position when a TOC reading and a TOC storing to a plurality of disks are completed(S20). An optical disk player displays a certain image read from an optical disk when a reproducing key signal is inputted(S30,S40). Next information is displayed when a next key is inputted(S50,S60). The system control unit checks a current reproducing time with reference to current time information provided from an optical disk player(S70). The system control unit judges as to whether the current reproducing time is reached to a predetermined time(S80). The system control unit judges as to whether a current reproducing disk is a last reproducing disk(S90). An OSD screen and a reproduced screen provided from the optical disk player are synthesized, and the synthesized screen are displayed on a display unit when the current reproducing disk is the last reproducing disk(S100).

Description

How to Display Information on the Optical Disc Changer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc changer, and more particularly, to display information of the next disc while playing one disc of a plurality of discs mounted in a tray roulette. An information display method for a configured video compact disc.

Optical disc players are commonly referred to as compact disk players (CDP), laser disk players (LDP), compact disk graphic players (CDGP), and video compact disc players (CDGP). VCDP: such as a video compact disk player (e.g., video compact disk player) refers to a device that can read the recorded data by irradiating light such as a laser to the optical disk containing the video or audio, such an optical disk player is a conventional video / audio playback device Compared to the above, the signal / noise ratio (S / N ratio) is high, so high quality and high sound quality can be obtained, random access that can be played at an arbitrary position, and the signal distortion is low. Due to this, it is a video and / or audio reproducing medium that is widely used in recent years.

As such an optical disc player develops in recent years, recently, a large amount of data such as a movie can be recorded on a disc using the MPEG-2 moving picture compression technique. At this time, the amount of data to be stored may be so large that it cannot be stored in one disc. In such a case, an optical disc changer capable of mounting a plurality of discs in one tray and continuously playing the mounted discs It was solved by the development of.

In the above-described optical disk changer, identification (identification) is given to each of the plurality of disk trays (for example, three, seven, etc.) provided in the tray roulette, and leads of the optical disk mounted on each disk tray. Read the TOC (Table of Content) information contained in the read-in area, refer to the TOC information, and provide the user with the information of the disc mounted in each disc tray through the OSD (On Screen Display), etc. have. At this time, the TOC information includes the name of the disc, the start / end position of each track section of the disc, the start / end position of the entire track of the disc, and the like.

As such, in providing disk information to a user, conventionally, the TOC information of the disk # 1 is read and stored before starting one disk (for example, # 1), while the disk ( Disc information extracted from the TOC information of # 1) is displayed on an OSD screen. After that, when the disk # 1 is completed, the TOC information of the next disk (for example, # 2) is read, and the operation performed on the disk # 1 described above is repeated.

As a result, in the case where a plurality of discs mounted in the tray roulette are played back in succession, in order to display information on the next disc # 2 after the completion of playback of one disc (for example, # 1), A delay occurs while reading TOC information from the disc # 2. That is, when reading continuous information (e.g., video and audio for one movie divided into two or three CDs), in order to provide information of the next disk at the time of change of each disk, The playback of the information (eg, video and audio) contained in has been suspended.

Therefore, in the conventional disc information display method, the user may not be provided with information about the next disc instead of being provided with information, or may not be provided with information about the next disc in order to receive the information about the next disc. There was this.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and when an end of playback is reached during the playback of one disc, the optical disc is configured to display information on the next disc at a predetermined position on the currently playing screen. The purpose is to provide a method of displaying information of a disc changer.

In order to achieve the above object, in the present invention, in an optical disc changer for selectively reproducing a plurality of discs, information on a disc to be reproduced next is displayed with reference to TOC (Table of Content) information contained in each of the discs. A method comprising the steps of: sequentially reading and storing TOC information from each of a plurality of discs mounted in the optical disc changer; When the information on the disc is required to be reproduced, information recorded from the disc based on a predetermined order or user's selection is reproduced, and the current reproduction time Tn is checked based on the time information included in the reproduced information. Second step; A third step of retrieving an end time Te of the disc currently being played from the stored TOC information; A fourth step of determining whether the current reproduction time (Tn) reaches a preset time (Te-α) immediately before the end time (Te); When the current playback time reaches a preset time Te-α, the second display unit displays TOC information corresponding to the next disk of the currently playing disk based on a preset playback order on a portion of the currently playing screen of the current disk. 5 steps; A sixth step of determining whether the current reproduction time (Tn) reaches the end time (Te); And a seventh step of repeating the second to sixth steps for the next disc when the current reproduction time (Tn) reaches the end time (Te).

1 is a block diagram of hardware suitable for implementing a method for displaying information of an optical disc changer according to the present invention;

Fig. 2 is a detailed flowchart showing the information display method of the optical disc changer according to the preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

100: key input unit 200: system control unit

300: optical disc player 400: tray roulette

500: storage unit 600: OSD processing unit

700: display unit

Hereinafter, with reference to the accompanying Figures 1 and 2 will be described in detail a preferred embodiment of the present invention.

1 is a block diagram of hardware suitable for implementing the information display method of the optical disc changer according to the present invention, and FIG. 2 is a detailed flowchart showing the information display method of the optical disc changer according to the preferred embodiment of the present invention.

First, referring to FIG. 1, hardware suitable for implementing the information display method of the optical disc changer according to the present invention includes a key input unit 100, a system control unit 200, an optical disc player 300, a tray roulette 400, It comprises a storage unit 500, OSD processing unit 600, and display unit 700, each of its individual configuration and function is as follows.

First, the key input unit 100 is composed of a remote control having a plurality of function keys including a next key and a playback key, or a key panel attached to an optical disc player body, and generates a key signal corresponding to a user's key operation. The generated key signal is provided to the system controller 200.

The system control unit 200 controls the overall optical disc changer, and in particular, a program for displaying the next information is mounted according to the present invention. The system control unit 200 records and controls TOC information in the storage unit 500 that the optical disc player 300 reads from each of a plurality of discs mounted in the tray roulette 400 by the loaded program. The TOC information and the information on the current playback time (aka 'Q data') provided from the optical disc player of the disc are compared, and in response to the comparison result, the next display method according to the present invention can perform the OSD processing unit ( 600) and the optical disc player 300.

The optical disc player 300 rotates and drives the tray roulette 400 under the control of the system controller 200, while reading the TOC information from each disc mounted in the tray roulette 400 to the system controller 200. The service information (video and audio) is read from each disc and provided to the OSD processor 600.

The tray roulette 400 is equipped with a plurality of optical disks.

The storage unit 500 stores TOC information for each of a plurality of optical disc players mounted on the tray roulette 400.

The OSD processing unit 600 configures TOC information or a message (text information) of a predetermined disk read out from the storage unit 500 as an OSD screen under the control of the system controller 200, and configures the configured OSD screen as an optical disc player ( After synthesized with the playback screen provided from 300, the synthesized screen is displayed on the display unit 700.

The display unit 700 is configured of a monitor or the like, and the playback screen provided from the optical disc player or the screen synthesized by the OSD processing unit 600 is displayed via the OSD processing unit 600.

Hereinafter, a process in which the information display method of the optical disc changer according to the present invention is implemented in the above-described hardware will be described with reference to FIG. 2.

First, when power is supplied to the optical disk changer while the disks # 1, # 2, and # 3 are mounted in the tray roulette 400 (S 10), the system controller 200 controls the optical disk player 300. It is suggested to read TOC information from a plurality of disks # 1, # 2, # 3 mounted in the tray roulette 400.

Under the control of the system controller 200, the optical disc player 300 reads TOC information from the lead-in area of the first disc # 1 according to a predetermined order, and reads the read information into the system controller 200. To provide.

The system control unit 200 receiving the TOC information of the first disc # 1 from the optical disc player 300 stores the TOC information in a predetermined section of the storage unit 50.

On the other hand, when the optical disc player 300 completes reading the TOC information from the first disc # 2, the tray roulette 400 is rotated to read the TOC information from the lead-in area of the second disc # 2. The TOC information thus read is also stored in a predetermined section of the storage unit 500 by the above-described process.

In addition, TOC information of the third disk # 3 is also stored in a predetermined section of the storage unit 500 by the same process as the above-described second disk # 2. In this case, the TOC information includes information about a start point Ts, an end point Te of all tracks, and a start point and an end point of each track section.

As described above, when TOC reading and storing of the plurality of discs # 1, # 2, and # 3 mounted in the tray roulette 400 are completed, the optical disc player 300 moves the tray roulette 400 to its original position. (I.e., disk # 1) (S20).

After the step S 20 is completed, the system controller 200 maintains a key signal input standby state from the key input unit 100. At this time, when a play key signal is applied from the key input unit 100 (S30), the system controller 200 reads the program information (video and audio) recorded on the first disc # 1, which is set in advance, to the optical disc player 300. ).

The optical disc player 300 reads program information (video and audio) as a radio frequency (RF) signal from the optical disc # 1 mounted in the tray roulette under the control of the system controller 200, and reads the read RF signal. Amplify, demodulate, process and decode the digital signal to separate it into a digital audio signal and a digital video signal. The digital video signal is provided to the OSD processor 600. In this case, since the OSD processing unit 600 is not driven by the control of the system controller 200, the digital video signal is bypassed to the display unit 700 via the OSD processing unit 600.

In the display unit 700, a predetermined image read out from the optical disc # 1 by the optical disc player 300 is displayed (S40).

When the next key signal is applied to the key input unit 100 while the above-described step S40 is performed (S50), the system controller 200 stores the reproduction end time Te of the optical disc # 1 currently being reproduced. In this case, the information on the reproduction end time of the optical disc # 1 currently being reproduced will be included in the TOC information of the optical disc # 1 stored in the storage unit 500. In addition, in another embodiment of the present invention, the above-described next key signal may be applied before the optical disc is reproduced, and at this time, the information of the next optical disc (for example # 2) to be reproduced by the operation process of the present embodiment described later, That is, the next information may be displayed (S60).

On the other hand, the current time information (aka Q data) for determining the current playback time is recorded on each track of the optical discs # 1, # 2, # 3. In the optical disc player 300, the optical disc # 1 The current time information is also read and provided to the system controller 200 while playing the program information (video and audio) contained in the. Therefore, the system controller 200 checks the current playback time Tn by referring to the current time information provided from the optical disc player 300. (S70)

On the other hand, during the steps S40 and 70, the system control unit 200 reaches the position before the preset time? From the playback end time Te searched at the step S60 by the current playback time Tn. Judge. That is, it is determined whether the current reproduction time Tn reaches the position of the preset time Te-α.

As a result of the determination of step S 80, if the current reproduction time Tn does not reach the position of the preset time Te-α, the above-described steps S 70 and S 80 continue.

On the other hand, as a result of the determination in step S80, when the current playback time Tn reaches a preset time Te-α, the system controller 200 determines that the last disk (for example, For example, it is determined whether it is # 3). (S90) In this case, step S90 according to the present embodiment may be performed at any step in which step S80 is performed in step S30 described above.

As a result of the determination in step S90, if the disc currently being played (# 1) is the last disc loaded, the system control unit 200 displays a message indicating that the disc currently being played is the last disc or that there is no next information. The OSD processor 600 is controlled to control the OSD processing unit 600. Accordingly, the OSD controller 600 reads information about a predetermined message previously stored in the internal memory (not shown), that is, a message indicating that the disc currently being played is the last disc or a message indicating that there is no next information. In addition, the read message information is configured as an OSD screen, and the synthesized OSD screen is combined with a playback screen provided from the optical disc player 300, and then the synthesized screen is displayed through the display unit 700 (S 100). .

On the other hand, if it is determined in S 90 that the currently playing disc # 1 is not the last disc mounted in the tray roulette 400, the system control unit 200 sends the next disc (for example, # # from the storage unit 500). The TOC information of 2) is read out, the read information is provided to the OSD processing unit 600, and the OSD processing unit 600 is controlled to display the provided information on the OSD screen. Accordingly, the OSD control unit 600 configures the OSD screen by the control of the system control unit 200, that is, the information provided from the system control unit 200, that is, the TOC information of the next disk # 2, as the OSD screen. To the playback screen provided from the optical disc player 300, and then displays the synthesized screen through the display unit 700 (S 110).

While the above-described step S 110 is in progress, the system controller 2000 determines whether the current reproduction time Tn reaches the reproduction end time Te (S 120).

As a result of the step S120, as described above, the above-described step S120 is repeated until the current reproduction time Tn reaches the reproduction end time Te, and when the current reproduction time Tn reaches the reproduction end time Te The system controller 200 controls the optical disc player 300 to play the program information (video and audio) recorded on the next disc (eg, # 2).

The optical disc player 300 rotates the tray roulette 400 under the control of the system controller 200 to chuck the next disc (for example, # 2) (S 130), and the chucked optical disc (# 2). ) Is reproduced by the same process as the step S40 (S140).

While step S 140 is in progress, the above-described steps S60 to S140 are repeated.

In the above-described process, in the present embodiment, an optical disk changer in which three disks are mounted has been described as an example, but the above-described method can be easily used regardless of the number of disks mounted in the optical disk changer.

In the above-described embodiment, the above-described next information display method is described based on the next key signal applied from the key input unit 100. However, the offset information (offset) information for the previous use is the next mode. Even if it is set to, the above-described next information display method will proceed.

According to the present invention described above, even during continuous playback of a plurality of discs, information of subsequent discs, that is, next information, can be displayed without interruption of playback, thereby providing a desired program playback screen to the user and at the same time the next information. Can provide. As a result, there is an effect that can improve the user's ease of use for the optical disk changer.

Claims (3)

In an optical disc changer for selectively reproducing a plurality of discs, a method of displaying next information on a disc to be reproduced next by referring to Table of Content (TOC) information contained in each of the discs, A first step of sequentially reading and storing TOC information from each of the plurality of disks mounted in the optical disk changer; When the information on the disc is required to be reproduced, information recorded from the disc based on a predetermined order or user's selection is reproduced, and the current reproduction time Tn is checked based on the time information included in the reproduced information. Second step; A third step of retrieving an end time Te of the disc currently being played from the stored TOC information; A fourth step of determining whether the current reproduction time (Tn) reaches a preset time (Te-α) immediately before the end time (Te); When the current playback time reaches a preset time Te-α, the second display unit displays TOC information corresponding to the next disk of the currently playing disk based on a preset playback order on a portion of the currently playing screen of the current disk. 5 steps; A sixth step of determining whether the current reproduction time (Tn) reaches the end time (Te); And a seventh step of repeating the second to sixth steps for the next disc when the current reproduction time (Tn) reaches the end time (Te). The information display method of claim 1, wherein Determining whether the current disc is the last disc of a preset playback order; If the current disc is the last disc, character information indicating that there is no next information is displayed on the OSD screen instead of the fifth to seventh steps. 3. The information of the optical disc changer according to claim 1 or 2, wherein the next information display method is performed by a next mode preset signal set by offset information or by a next information request signal applied during reproduction of a disc. Display method.