JP2001236716A - Dvd reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a DVD reproducing device capable of executing the search operation meeting the constitute of CHAPTER and TITLE on a DVD disk. SOLUTION: This device has a means for setting a search mode at a CHAP TER search mode for executing the search operation in accordance with a CHAPTER number when the maximum value of a TITLE number is smaller than the maximum value of the CHAPTER number and a means for setting the search mode at a TITLE search mode for executing the search operation in accordance with the TITLE number when the maximum value of the TITLE number is above the maximum value of the CHAPTER number.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a DVD reproducing apparatus.

[0002]

2. Description of the Related Art Conventionally, in a CD reproducing apparatus, TRACK and INDEX are used for delimiting information signals.
INDEX is used for further dividing one TRACK. A TRACK search was performed using the SKIP key, and it was possible to quickly move to the beginning of a song or the like whose INDEX number = 01 of the TRACK number and start reproduction.

In a DVD (DIGITAL VERSATILE DISC) reproducing apparatus, TITLE and CHAP are used to separate information signals.
TER is used. In software such as a movie, several to several tens of CHAPTERs are arranged in one TITLE. On the other hand, in karaoke software, one to one CHAPTER is arranged for several to several tens of TITLEs. As described above, in the DVD, how to use information breaks differs depending on the type of software. The search method includes a method of performing a CHAPTER search operation using an SKIP key, and a method of performing a search operation by specifying both TITLE and CHAPTER.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a DVD reproducing apparatus capable of performing a search operation according to the configuration of CHAPTER and TITLE on a DVD disk.

[0005]

According to the present invention, there is provided a DVD reproducing apparatus having a search function for moving to a head of CHAPTER and TITLE which is a delimiter of recording information on a DVD disk. Information about the TITLE number and the TITLE number, and the maximum value of the TITLE number and CH
Means for comparing with the maximum value of the APTER number, TITLE
When the maximum value of the number is smaller than the maximum value of the CHAPTER number, means for setting the search mode to the CHAPTER search mode for performing the search operation based on the CHAPTER number, and when the maximum value of the TITLE number is greater than or equal to the maximum value of the CHAPTER number In some cases, a TIT for performing a search operation based on a TITLE number is used.
It is characterized in that a means for setting a search mode in the LE search mode is provided.

[0006] The search operation is started by a SKIP key or a SERACH key provided on the main body of the DVD reproducing device or the remote control device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration of a DVD reproducing apparatus.

Reference numeral 2 denotes a DVD laser pickup for reading pit signals from the DVD disk 1. Reference numeral 6 denotes a reproduction RF amplifier for amplifying a signal read from the laser pickup 2. Reference numeral 7 denotes an MPEG circuit that performs processing such as error correction on the output signal of the reproduction RF amplifier 6 and expands the compressed digital video signal and digital audio signal.

Reference numeral 8 denotes a video D / A conversion circuit for converting a video digital signal into an analog signal, and reference numeral 9 denotes an audio D / A conversion circuit for converting an audio digital signal into an analog signal. Reference numeral 10 denotes a video output terminal for outputting a video signal, and reference numeral 11 denotes an audio output terminal for outputting an audio signal.

Reference numeral 4 denotes a spindle motor, and reference numeral 3 denotes a sled motor. Reference numeral 5 denotes a motor control circuit for controlling the spindle motor 4 and the sled motor 3.
Reference numeral 12 denotes a control circuit. The control circuit 12 controls the motor control circuit 5 and performs servo control based on a reproduction signal from the reproduction RF amplifier 6. The control circuit 12 controls the mechanism and the like and controls the entire system based on information from the mechanical switch input terminal 14 and the key input terminal 15 and controls the display device 13. The control circuit 12 is constituted by a system controller using a microcomputer.

When reproducing the disk 1, the laser pickup 2 emits light, focuses on the reflection surface of the disk 1, and focuses on the disk surface. Further, the spindle motor 4 is rotated, and the spindle servo,
Apply tracking servo and thread servo. Then, the recording signal is read from the disk 1 by the laser pickup 2.

The read signal is sent to an MPEG circuit 7 via a reproduction RF amplifier 6 and subjected to processing such as error correction and digital expansion. The video signal obtained by the MPEG circuit 7 is converted to an analog signal by the video D / A conversion circuit 8 and then sent to the video output terminal 10. The audio signal obtained by the MPEG circuit 7 is converted to an analog signal by the audio D / A conversion circuit 9 and then sent to the audio output terminal 11.

There are single-sided and double-sided DVD disc types, and single-layer and double-layer discs are standardized. In a video DVD disk, an opening screen, a main part, other information, and the like are each separated by TITLE, and as shown in FIG. 2, the main part is often further separated by a CHAPTER. Further, in the case of a single-sided double-layer disc for a movie or the like, there are cases where the main part is further divided into two TITLEs.

In a DVD disk for karaoke or the like, as shown in TITLE2, 3, 5, and 6 in FIG.
In many cases, all CHAPTERs are delimited by TLE and only 1 is set.

The DVD reproducing apparatus according to this embodiment has
CHAPT which is the delimiter of the recorded information on DVD disc
A search function is provided for quickly moving to the beginning of ER and TITLE. The search operation is performed by the S provided in the main body of the DVD playback device or the remote control device.
Initiated by a KIP key or SERACH key.

In the DVD reproducing apparatus according to this embodiment, the maximum value of the TITLE number on the disc is CHAPT.
If the ER number is smaller than the maximum value, CHAPTER
A search operation is performed based on the number. Conversely, when the maximum value of the TITLE number on the disk is equal to or greater than the maximum value of the CHAPTER number, a search operation is performed based on the TITLE number.

FIG. 4 shows a state in which a DV is inserted when a disc is inserted.
14 shows a search mode determination processing procedure performed by the D playback device.

When a disc is inserted into the DVD reproducing apparatus, the TOC is read (step 1), and it is determined whether the disc is a DVD disc or a CD disc based on the contents of the TOC (step 2). If it is determined that the disc is a CD, the search mode is set to the TRACK search mode for performing a search operation using the SKIP key based on the TRACK number (step 3).

If the disc is determined to be a DVD disc, the maximum TITLE number and the CHAPTE
A comparison is made with the maximum value of the R number (step 4). TIT
When the maximum value of the LE number is smaller than the maximum value of the CHAPTER number (in the case of a movie DVD disc: see FIG. 2), the search operation using the SKIP key is performed by the CHAPTER.
The search mode is set to the CHAPTER search mode for performing based on the number (step 5).

The maximum value of the TITLE number is CHAPTER
If the number is greater than or equal to the maximum value (DVD for karaoke
In the case of a disc: see FIG. 3), a TIT for performing a search operation using an SKIP key based on a TITLE number
The search mode is set to the LE search mode (step 6).

[0022]

According to the present invention, it is possible to perform a search operation according to the configuration of CHAPTER and TITLE on a DVD disk.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a DVD playback device.

FIG. 2 is a schematic diagram showing an example of a DVD disc in which the maximum value of a TITLE number is smaller than the maximum value of a CHAPTER number.

FIG. 3 is a schematic diagram showing an example of a DVD disk in which the maximum value of a TITLE number is equal to or larger than the maximum value of a CHAPTER number.

FIG. 4 is a flowchart showing a search mode determining process performed by the DVD reproducing apparatus when a disc is inserted.

[Explanation of symbols]

 Reference Signs List 1 DVD disc 2 DVD laser pickup 3 thread motor 4 spindle motor 5 motor control circuit 6 RF amplifier 7 MPEG circuit 12 control circuit

Claims (2)

[Claims] 1. A DVD reproducing apparatus having a search function for moving to the beginning of CHAPTER and TITLE which is a delimiter of recording information on a DVD disk, comprising: a CHAPTER number and a TITL on the DVD disk;
Means for acquiring information on the E number and comparing the maximum value of the TITLE number with the maximum value of the CHAPTER number; when the maximum value of the TITLE number is smaller than the maximum value of the CHAPTER number, the search operation is performed based on the CHAPTER number Means for setting a search mode to a CHAPTER search mode for setting a search mode to a TITLE search mode for performing a search operation based on the TITLE number when the maximum value of the TITLE number is equal to or greater than the maximum value of the TITLE number. Means for reproducing a DVD. 2. A SKIP key or SE provided on a main body of a DVD reproducing apparatus or a remote control apparatus.
2. The DVD reproducing apparatus according to claim 1, wherein a search operation is started by a RACH key.