JP2002100163A - Disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk player which improves the operability in reproducing of a recording medium in which angle blocks exists and enables a user to enjoy the videos based on video data recorded at this recording medium with composure. SOLUTION: A DVD player 1 detects the start position and end position of the angle blocks relating to a DVD when this DVD is set in a main body and accepts the selection of cells by each of the detected angle blocks (s1 to s6). When the read position of the video data arrives at the start point of the angle blocks in reproducing the video data recorded at the DVD set in the main body, the reading position is moved to the start position of the cells selected in the angle blocks and when this position arrives at the end point of the cells, the reading position is moved to the recording position of the video data connected to the end position of the angle blocks. Then, the user is not required to carry out the selection operation of the cells to the angle blocks in reproduction the video data and, therefore, the user is able to view the videos displayed on a display device connected to an output section 4 with composure in reproducing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk player for reproducing video data recorded on a disk-shaped recording medium, in particular, a digital versatile disk (DVD).

[0002]

2. Description of the Related Art Conventionally, a digital versatile disk (hereinafter referred to as a DVD), which is a disk-shaped recording medium, reads video data recorded on a digital versatile disk and outputs a video signal based on the video data.
There was a versatile disc player (hereinafter referred to as a DVD player). A display device such as a television receiver can be connected to the DVD player.
An image corresponding to the image signal output from the player can be displayed.

[0003] Some DVDs are provided with a recording area called an angle block. The angle block has a plurality of cells, which are units for reproducing video data, and by changing the selection of these cells, it is possible to enjoy images of various patterns. The playback function for the angle block is generally called a multi-angle playback function. Some DVDs have a plurality of angle blocks.

Here, the concept of the angle block and the multi-angle reproduction function will be briefly described with reference to FIG. As is well known, a DVD player sequentially reads video data recorded on a DVD by a pickup head and outputs a video signal corresponding to the read video data. The video signal output from the DVD player is an analog signal. The angle block has a plurality of cells (cells A to E in the figure) as described above. These cells are different video data. When the read position of the video data reaches the start position of the angle block (X shown in the figure), the DVD player moves the reproduction position to the start position of the selected cell.
For example, if cell A is selected, the reading position is changed to cell A
, And if the cell B is selected, the reading position is moved to the starting position of the cell B, and the video data is read. When the read position of the video data reaches the end position of the selected cell, for example, the cell A
Is reached, the video data read position is moved to the start position (Y shown in the figure) of the video data connected to this angle block, and the video data is read.

Therefore, by changing the cell selection,
Since the video data read from the DVD differs in the angle blocks, it is possible to enjoy images of various patterns.

By the way, when reproducing the angle block, it is necessary to detect the read position of the video data and control the movement of the pickup head.
The load on the control unit (CPU) provided in the D player main body increased, and the connection of output images on the display device connected to the DVD player was not smooth. Therefore, a CP for detecting a reading position of video data and the like is used.
A DVD player has been proposed in which the connection of output video is made smooth by providing a separate U.
No. 7763).

[0007]

However, when a conventional DVD player plays a DVD having a plurality of angle blocks, it is not possible to previously select a cell to be played for each angle block. For example, when the selection number (hereinafter, referred to as an angle number) of a cell to be reproduced in an angle block is set to “1”, the angle number corresponds to “1” in all the angle blocks present in the DVD being reproduced. Is played. Therefore, if you want to change the angle number for the next angle block during DVD playback,
I had to change each time. For this reason, the operation is complicated, and the user cannot enjoy the video displayed on the display device connected to the DVD player.

An object of the present invention is to provide a disk player which can improve the operability at the time of reproducing a recording medium having an angle block and enjoy a video based on video data.

[0009]

A disk player according to the present invention has the following arrangement to solve the above-mentioned problems.

(1) Video data reading means for reading video data recorded on a disk-shaped recording medium, and video signal output means for outputting a video signal based on the video data read by the video data reading means. The video data reading means, when the video data reading position reaches the start position of an angle block having a plurality of cells as a reproduction unit, a disk player that reads the cell selected in the angle block. An angle block detecting means for detecting a position of the angle block with respect to a recording medium set in the apparatus main body at a predetermined timing before the reproduction of the video data starts, and an angle block detected by the angle block detecting means Angle selection reception that receives the selection of the above cell every time It includes a stage, a.

In this configuration, with respect to the disk-shaped recording medium set in the main body, the position of the angle block having a plurality of cells as a reproduction unit is detected at a predetermined timing before the start of reproduction, and the position is detected here. The selection of the cell to be reproduced for each angle block is now accepted. As described above, the cell can be selected for each angle block existing on the recording medium before the reproduction of the video data recorded on the recording medium is started. The operation need not be performed. Therefore, the user can enjoy the video according to the video signal output from the apparatus main body during the reproduction.

(2) The predetermined timing is when the recording medium is set in the main body.

In this configuration, the position where the angle block exists when the disc is set in the main body is detected, and the cell selection is received for each detected angle block.

(3) The predetermined timing is a timing at which reproduction of a recording medium set in the apparatus main body is instructed.

In this configuration, when an instruction to reproduce the recording medium set in the apparatus body is issued, the position where the angle block exists is detected, and the cell selection is received for each detected angle block. .

(4) The recording medium is a digital versatile disk.

In this configuration, video data recorded on a digital versatile disk, a so-called DVD, can be reproduced.

[0018]

FIG. 1 is a block diagram showing a configuration of a DVD player (digital versatile disc player) according to an embodiment of the present invention. The DVD player 1 of this embodiment includes a control unit 2 for controlling the operation of the main body, and video data (audio data and video data) recorded on a digital versatile disk (hereinafter referred to as a DVD) set in the main body. A reading unit 3 having a pickup head 3a for reading data), an output unit 4 for converting video data read by the reading unit 3 into an analog video signal or audio signal and outputting the same, and an input unit 5 for performing an input operation on the main body. And a display unit 6 for displaying an operation state and the like of the main body, and a remote control device 1 for remotely controlling the main body
A receiving unit 7 for receiving a control signal transmitted from 0,
It has.

The control unit 2 is provided with a memory 2a for storing control data and the like generated during operation, and the memory 2a stores program chain information (PGC) to be described later.
It has a storage area for storing I). Reading unit 3
Is provided with a rotation drive unit for rotating the DVD set in the main body 1 and the like. A display device (not shown) such as a television is connected to the output unit 4, and the display and the audio of the video according to the video data recorded on the DVD set in the main body 1 are connected to the connected display device. Output is performed. The remote control device 10 transmits a control signal by infrared rays or radio waves according to an input operation.

There is a DVD in which an angle block having a plurality of cells as a unit of reproducing video data exists in a recording area of the video data. In the DVD player 1 of this embodiment, the reproducing position (the reading position of the video data) is an angle. When the start position of the block is reached, the playback position is moved to the start position of the cell preselected for the angle block, and when the playback position reaches the end position of this cell, the playback position is changed to this cell. A multi-angle playback function is provided which has a function of moving to a recording position of video data connected to the end position of the included angle block.

The DVD stores information indicating the start position and end position of the angle block (hereinafter referred to as angle block information). The angle block information is a part of the program chain information (PGCI) recorded in a recording area provided separately from a recording area of DVD video data. By reading the program chain information, the total number of angle blocks, the start position of each angle block,
And information such as the end position.

Hereinafter, the operation of the DVD player 1 of this embodiment will be described. FIG. 2 shows a DVD of this embodiment.
6 is a flowchart showing an operation of the player 1. When the DVD is set in the main body (s1), the DVD player 1 of this embodiment reads the program chain information from the DVD (s2), reads the total number of angle blocks in the DVD set in the main body, and starts each angle block. The position and the end position are stored in a predetermined storage area of the memory 2a provided in the control unit 2 (s3). As described above, the program chain information read in s2 includes information indicating the start position and the end position of each angle block.

When completing the process of s3, the DVD player 1 accepts cell selection for all angle blocks of the DVD set in the main body, and stores it in the memory 2a provided in the control unit 2 (s4 to s4). s6). At this time, the DVD player 1 accepts cell selection in the order of reproduction (the order of angle blocks) during reproduction. Further, when accepting the selection of a cell, the video data recorded in each cell is read, a video signal or an audio signal based on the video data is output, and a video of the video data recorded in each cell is output to the user. You may show it.
In this way, the user can easily select a cell in which an image suitable for his / her preference is displayed (it is possible to assist the user in selecting a cell).

Thereafter, the DVD player 1 waits until an input operation is performed on the input unit 5 or a control signal transmitted from the remote control device 10 is received on the receiving unit 7 (waits for an input to the main unit 1). .). When there is an input to the main body, the DVD player 1 determines that the input requires a reproduction process (s
8) A reproduction process described later is performed (s9), and the process returns to s7.
If the request is to remove the disk set in the main body (s10), the disk is released and the process returns to s1. Also,
If the request is other than the above, a process (other process) according to the input request is performed (s12), and the process returns to s2.

Next, the reproduction process in s9 will be described. FIG. 3 is a flowchart showing the reproduction process. The DVD player 1 moves the pickup head 3a to a video data reading start position on the DVD set in the main body (s21), and the reading unit 3 controls the DV.
The reproduction process of reading the video data recorded in D and outputting a video signal and an audio signal (analog signal) corresponding to the read video data from the output unit 4 is started (s22).

Thereafter, when the read position of the video data reaches the start position of the angle block (s23), the DVD player 1 sets the read position of the video data to the start position of the cell whose selection has been accepted for the angle block in s4. The pickup head 3a is moved to the position (s2
7). When the read position of the video data reaches the end position of the cell selected in the angle block (s24), the pickup head moves the read position of the video data to the recording position of the video data connected to the end position of the angle block. 3a is moved (s27).

Further, when the read position of the video data reaches the end position of the video data on the DVD set in the main unit (s25), or when a request to stop reproduction is input to the main unit (s26), This reproduction processing ends.

As described above, when a DVD is set in the main body, the DVD player 1 of this embodiment detects the start position and the end position of an angle block of the DVD, and further, detects a cell for each angle block detected here. Accept the selection. When the video data read position reaches the start position of the angle block during reproduction of the video data recorded on the DVD set in the main body, the read position is set at the start position of the cell selected in the angle block. Is moved, and when the end position of the cell is reached, the reading position is moved to the video data recording position leading to the end position of the angle block.

That is, before starting the reproduction process of the DVD set in the main body, the cell can be selected for each angle block existing in the DVD, so that the cell selection operation for the angle block is not performed at the time of reproducing the video data. You may. Therefore, the user can watch the video displayed on the display device connected to the output unit 4 at the time of reproduction (the sound output from the display device can also be heard).

In the above embodiment, when a DVD is set in the apparatus main body, the program chain information recorded on the DVD is read, and the start position and end position of all the angle blocks existing on the DVD are read. Although the position is detected and the cell selection is received for each angle block detected here and stored in the memory 2a provided in the control unit 2 (processing of s2 to s6), as shown in FIG. Is not performed when a DVD is set in the device, but when an input requesting a reproduction process to the main body is made, s2 to s in the above embodiment are performed.
6 may be executed (s shown in FIG. 2).
The processing of 2 to s6 may be inserted between s8 and s9 in FIG. ).

In this case as well, before the reproduction process of the DVD set in the main unit is started, the cell can be selected for each angle block existing in the DVD. Since this need not be performed, the same effects as those of the DVD device of the above embodiment can be obtained. In addition, when a request for reproduction is made, a cell can be selected for each angle block present in the DVD set in the main unit, so that when the DVD set in the main unit is repeatedly reproduced, this DVD is reproduced. The cell selected in each angle block can be changed without taking out from the apparatus main body.

Further, as shown in FIG. 5, the processing of s2 and s3 according to the above embodiment is executed when the DVD is set in the main body, and only the processing of s4 to s6 requests the main body to perform the reproduction processing. It may be executed when there is an input to be performed. In this way, when the DVD set in the main unit is repeatedly played back, the DV
The cell selected in each angle block can be changed without taking out D from the apparatus main body, and the processing required for s2 and s3 is not performed, so that the time required until the reproduction processing is started is reduced by that much. I can do it.

[0033]

As described above, according to the present invention, a cell can be selected for each angle block existing on the disk before the reproduction process of the disk set in the main body is started. For this reason, it is not necessary to perform the cell selecting operation for the angle block when reproducing the video data. Therefore, it is possible to make the user fall down and watch the image displayed on the display device connected to the output unit 4 at the time of reproduction, and the user can be sufficiently enjoyed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a DVD player according to an embodiment of the present invention.

FIG. 2 is a flowchart showing processing of a DVD player according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a reproducing process in a DVD player according to an embodiment of the present invention.

FIG. 4 is a flowchart showing a process of a DVD player according to another embodiment of the present invention.

FIG. 5 is a flowchart showing a process of a DVD player according to another embodiment of the present invention.

FIG. 6 is a diagram illustrating the concept of an angle block and a multi-angle playback function.

[Explanation of symbols]

 Reference Signs List 1-DVD player 2-controller 2a-memory 3-reading unit 3a-pickup head 4-output unit 5-input unit 6-display unit 7-receiving unit 10-remote control device

Claims (4)

[Claims] 1. A video data reading means for reading video data recorded on a disk-shaped recording medium; and a video signal output means for outputting a video signal based on the video data read by the video data reading means. The video data reading means, when the read position of the video data reaches the start position of an angle block having a plurality of cells as a playback unit, in a disk player that reads the cell selected in the angle block, At a predetermined timing before the start of the reproduction of the video data,
Angle block detecting means for detecting the position of the angle block with respect to the recording medium set in the apparatus body, Angle selection receiving means for receiving the selection of the cell for each angle block detected by the angle block detecting means, Disc player with. 2. The disc player according to claim 1, wherein the predetermined timing is when the recording medium is set on a main body. 3. The disc player according to claim 1, wherein the predetermined timing is a timing at which reproduction of a recording medium set in the apparatus main body is instructed. 4. The disk player according to claim 1, wherein said recording medium is a digital versatile disk.