JP2003143526A - Dvd player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a DVD player for enabling even a TV receiver without including a closed caption decoder to display closed caption text data recorded on a DVD. SOLUTION: This DVD player is provided with a converting means for converting the closed caption text data obtained from the DVD into video data, and a combining means for combining the video data obtained by the converting means with the main video data obtained from the DVD and outputting the combined data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DVD reproducing device.

[0002]

2. Description of the Related Art Conventionally, DVD (DIGITAL VERSATILE DIS
K) Playback devices play large-capacity discs, and are mainly used to play soft discs such as movies for a long time.

In the United States, it is obliged to incorporate a closed caption decoder for decoding closed caption text data, which is subtitle data, into a TV receiver of 13 inches or more. For DVD discs, the closed caption text data is an optional standard, but the video bit stream MPEG-
The second user data can be recorded on the DVD disc. Then, from the DVD reproducing device for reproducing the DVD disc on which the text data of closed caption is recorded, the text data of closed caption is superimposed and output on the Line 21 of the NTSC video signal, and the closed caption decoder of the TV receiver is output. Is decoded and displayed on the TV screen.

By the way, some DVD disc programs include closed caption text data but do not include subtitle SUBPICTURE signals. A program like this
When reproduced on a TV receiver without a built-in motion decoder, there is a drawback that the subtitles represented by the closed caption text data cannot be viewed.

[0005]

SUMMARY OF THE INVENTION The present invention is a closed c
Even if the TV receiver does not have a built-in aption decoder, DV
It is an object of the present invention to provide a DVD reproducing device capable of displaying closed caption text data recorded on D.

[0006]

According to a first aspect of the present invention, a converting means for converting closed caption text data obtained from a DVD into video data, and video data obtained by the converting means can be obtained from a DVD. It is characterized in that it comprises a synthesizing means for synthesizing and outputting the main video data.

According to a second aspect of the present invention, in the DVD reproducing apparatus according to the first aspect, the program to be reproduced from the DVD does not include sub-picture data,
It is characterized in that it is provided with control means for performing the conversion operation by the conversion means only when the text data of the closed caption is included.

According to a third aspect of the present invention, in the DVD reproducing apparatus according to the first aspect, the program to be reproduced from the DVD does not include sub-picture data,
It is characterized by including control means for performing the conversion operation by the conversion means only when the text data of the closed caption is included and the user has set the display of the text data of the closed caption. .

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

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

Reference numeral 2 denotes a DVD laser pickup for reading a pit signal from the DVD disc 1. A reproduction RF amplifier 6 amplifies a signal read from the laser pickup 2. Reference numeral 7 is a compressed closed signal that is processed by error correction or the like from the output signal of the reproduction RF amplifier 6.
MPE that expands caption text data (hereinafter referred to as CC text data), digital video signals (main video data, sub-picture data) and digital audio signals
It is a G circuit.

Reference numeral 8 is an audio D / A conversion circuit for converting voice data into an analog signal and outputting it to the audio output terminal 9. Reference numeral 10 denotes a switch for selecting one of the sub-picture data and the video data for the CC text data (data after the CC text data is converted to the video data). Reference numeral 11 is an adder for synthesizing the main image data with the image data sent via the switch 10. A video D / A conversion circuit 12 converts the video data combined by the adder 11 into an analog signal and outputs the analog signal to the video output terminal 13.

Reference numeral 4 is a spindle motor, and 3 is a thread motor. A motor control circuit 5 controls the spindle motor 4 and the sled motor 3.
20 is a control circuit. The control circuit 20 controls the motor control circuit 5 and performs servo control based on the reproduction signal from the reproduction RF amplifier 6. Control circuit 20
Controls the mechanism and the like and the entire system based on the information from the mechanical switch input terminal 31 and the key input terminal 32, and also controls the display device 33. Further, the control circuit 20 has a built-in text / video conversion circuit 21 for converting CC text data into a video signal. The control circuit 20 also controls the switch 10.

The control circuit 20 is composed of a system controller using a microcomputer. A key signal (remote control signal) from the remote controller and a key signal from the operation unit of the DVD reproducing apparatus body are input to the key input terminal 32.

When the disc 1 is reproduced, the laser pickup 2 is caused to emit light, the reflective surface of the disc 1 is focused, and the disc surface is focused. Furthermore, the spindle motor 4 is rotated, the spindle servo,
Apply tracking servo and sled servo. Then, the recording signal is read from the disc 1 by the laser pickup 2.

The read signal is sent to the MPEG circuit 7 through the reproduction RF amplifier 6 and subjected to processing such as error correction and digital expansion. The main video data obtained by the MPEG circuit 7 is sent to the video D / A via the adder 11.
After being converted into an analog signal by the conversion circuit 12, it is sent to the video output terminal 13. The audio data obtained by the MPEG circuit 7 is converted into an analog signal by the audio D / A conversion circuit 8 and then sent to the audio output terminal 9.

In the DVD reproducing apparatus according to this embodiment, when the program to be reproduced from the DVD includes a sub picture, the main video data and the sub picture data are combined and output. On the other hand, if the program to be played from the DVD does not include the sub-picture, the CC text data is included, and the user has set the CC text data to be displayed, the CC text data Is converted into video data, then combined with the main video data and output.

FIG. 2 shows a pre-processing procedure for reproducing an arbitrary program recorded on a DVD.

First, based on the navigation data,
It is determined whether or not the program to be reproduced includes a sub picture (step 1). When the DVD to be reproduced includes a sub picture, the switch 10 is controlled so that the sub picture data is sent to the adder 11 (step 3).

When the program to be reproduced does not include the sub-picture, it is determined based on the navigation data whether or not the program to be reproduced includes the CC text data (step 2). When the program to be reproduced does not include the CC text data, the switch 10 is controlled so that the sub picture data is sent to the adder 11 (step 3).

When the program to be reproduced includes CC text data, the video data (CC video data) corresponding to the CC text data is added by the adder 11
The switch 10 is controlled so as to be sent to (step 4).

Then, it is judged whether or not the user has set the CC text data to be displayed (step 5). If the user has set the CC text data to be displayed, the operation mode is set to the operation mode in which the CC / text conversion circuit 21 converts the CC text data into video data (step 6).

If the user has not set the CC text data to be displayed, the text / text
The operation mode is set to the operation mode in which the CC text data is not converted into the video data by the video conversion circuit 21 (step 7).

In the above embodiment, the user sets in advance whether or not the CC text data is to be displayed, and the program to be reproduced from the DVD does not include a sub-picture. When the text data is included and the user has set the CC text data to be displayed, the CC text data is converted into video data, and then combined with the main video data and output.

However, the function of setting whether or not the CC text data is displayed by the user is not always necessary. If there is no function for the user to set whether to display CC text data, D
If the program to be played from VD does not include sub-pictures but CC text data, after converting CC text data to video data,
The main video data may be combined and output.

[0026]

According to the present invention, the closed caption dec
It is possible to display the closed caption text data recorded on a DVD even with a TV receiver that does not have an oder built-in.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a DVD reproducing device.

FIG. 2 is a flowchart showing a procedure of preprocessing when reproducing an arbitrary program recorded on a DVD.

[Explanation of symbols]

1 DVD disc 2 Laser pickup for DVD 3 thread motor 4 spindle motor 5 Motor control circuit 6 RF amplifier 7 MPEG circuit 10 switches 11 adder 20 Control circuit 21 Text / video conversion circuit

Continued front page    F term (reference) 5C052 AA01 AB02 AB04 DD04 EE03                 5C053 FA24 GB12 LA04 LA06                 5D044 AB07 BC03 CC06 DE18 FG23                       HL04                 5D077 AA23 HA07 HC17

Claims (3)

[Claims] 1. A converting means for converting text data of a closed caption obtained from a DVD into video data, and a synthesizing means for synthesizing the video data obtained by the converting means with main video data obtained from a DVD and outputting the main video data. DVD playback device provided. 2. The program to be reproduced from the DVD does not include sub-picture data, and the closed capti
The DVD reproducing apparatus according to claim 1, further comprising control means for causing the converting operation by the converting means only when the text data of "on" is included. 3. The program to be reproduced from the DVD does not include sub-picture data, and the closed capti
contains text data of on, and depending on the user
The DVD reproducing apparatus according to claim 1, further comprising a control unit that causes the converting operation by the converting unit only when the setting for displaying the closed caption text data is performed.