JP2002100164A - Optical disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute the above device in such a manner that, when a user erroneously pushes a key while reproducing an optical disk and listening thereto, the command inputted by this key may be canceled and the reproduction of the optical disk may be restarted by returning to the reproduction position of the optical disk reproduced thus far when the key is erroneously pushed. SOLUTION: This optical disk reproducing device has a means of storing the search information for searching the reproduction position of the optical disk under reproduction into a memory means and executes the instruction inputted by the key when there is the key input during the reproduction of the optical disk, and a search back means which searches the reproduction position of the optical disk in accordance with the search information stored in the memory means and restarts the reproduction of the optical disk from the searched reproduction position when the instruction inputted the key is canseled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a search function for an optical disc such as a DVD (digital video disc).

[0002]

2. Description of the Related Art As a search function in an optical disk, there is a resume function. The resume function is a function of, when the reproduction is interrupted during reproduction of the optical disk, pressing the reproduction key to resume the reproduction from the position where the reproduction was performed.

The conventional technology of such a resume function is as follows.
For example, as described in JP-A-4-339386, when an external power supply is connected, the stop position of the optical pickup is stored in the memory, and the stop position stored in the memory when the reproduction is resumed. When the external power is turned off, the optical pickup is held at the stop position, and when the reproduction is resumed, the reproduction is started from the position where the optical pickup was stopped. There has been an optical disc reproducing apparatus in which the resume function is switched according to the status.

[0004]

However, according to the above prior art, when the reproduction of the optical disk is interrupted,
With the resume function, playback could be resumed from the point where playback was interrupted, but if the user accidentally stepped on the remote control or erroneously operated a key, playback was performed when a key was pressed Returning to the playback position, the playback of the optical disc could not be continued. That is, for example, when a title or chapter key is erroneously pressed, the selected title or chapter is searched, and the searched title or chapter is reproduced, and the command input by mistake is canceled. Therefore, it was not possible to return to the reproduction position of the optical disk which was being reproduced when the key was pressed and continue the reproduction.

[0005] Therefore, if the user accidentally presses a title or chapter key while playing back and viewing the optical disc, the user returns to the playback position of the optical disc that was being viewed when the key was pressed, and played back. The only way to continue is to select and play the title or chapter that you have watched, or to replay the scene you have already watched, or fast-forward the scene you have already watched and There is an inconvenience that a scene at the time of operation must be searched out, and then reproduced and viewed from there.

The present invention has been made in view of the above points, and when a user accidentally presses a key while reproducing and viewing an optical disc, the command input by the key is canceled, It is intended to return to the reproduction position of the optical disk that was being reproduced when the key was erroneously pressed, so that reproduction of the optical disk can be resumed.

[0007]

In order to achieve the above object, according to the present invention, when a key is input during reproduction of an optical disk, search information for searching for a reproduction position of the optical disk being reproduced is stored in a storage means. Means for storing and executing a keyed command; and when the keyed command is canceled, a search is performed for a reproduction position of the optical disk based on search information stored in the storage means. Search-back means for resuming reproduction of the optical disk from the reproduction position, and when a key input is made during reproduction of the optical disk, search information for searching the reproduction position of the reproduced optical disk is stored in the storage means. When a key-input command is executed and the key-input command is executed and the optical disc is reproduced, the key-input command is canceled. The search information for searching for the reproduction position of the optical disk being reproduced when the key input command is canceled is stored in the storage means, and the search information stored in the storage means when the key input is made Based on the information, a search is made for a reproduction position of the optical disk being reproduced at the time of key input, and reproduction of the optical disk is resumed from the searched reproduction position.

Thus, when a key is erroneously pressed during reproduction of the optical disk, the reproduction position of the optical disk reproduced when the key was erroneously pressed is determined based on the search information stored in the storage means. Then, the reproduction of the optical disk can be resumed.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an optical disk reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing an operation of the optical disk reproducing apparatus according to an embodiment of the present invention, and FIG. FIG. 4 is an explanatory diagram showing a search-back operation of the optical disk reproducing device according to the embodiment, and FIG. 4 is an explanatory diagram showing a search-back canceling operation of the optical disk reproducing device according to the embodiment of the present invention.

First, a description will be given based on a block diagram showing a configuration of an optical disk reproducing apparatus according to an embodiment of the present invention in FIG.

A signal of video data (hereinafter referred to as a video signal) recorded on an optical disc 1 such as a DVD is optically read by an optical pickup 2. The optical disk 1 is rotationally driven by a spindle motor 3 and is rotationally controlled by a spindle servo of a servo circuit 4. The optical pickup 2 is subjected to focus control and tracking control by a focus servo and a pickup servo of a servo circuit 4.

Read by the optical pickup 2,
The video signal recorded on the optical disc 1 is amplified and the synchronization detection / AD (analog-digital) conversion circuit 5
To be detected synchronously and converted from an analog signal to a digital signal. The video signal converted into the digital signal is sent to the demodulation / error correction circuit 6, where it is demodulated and the error of the data read from the optical disk is corrected.

The video signal corrected by the error correction circuit 6 is sent to a decoder 7, where a video signal and an audio signal are decoded. The decoded video signal and audio signal are converted from a digital signal to an analog signal by a DA (digital-analog) conversion circuit 8 and output as a video signal and an audio signal of the analog signal. Before the video signal is DA converted,
A video signal according to a predetermined signal system, for example, NTSC
(National television system
The video signal is encoded into a video signal of an em committee method, is DA-converted, and is output.

Various control signals for controlling the entire system among the video signals error-corrected by the error correction circuit 6;
The control signal reproduced by the decoder 7 is supplied to a central processing unit (CPU) 9 for controlling the entire system. Further, the CPU 9 includes a key input unit 11 and a remote controller 1.
3 receives a signal from the receiving unit 12 for receiving a signal from the receiver 3, and outputs a servo circuit 4, a demodulation / error correction circuit 6, and a decoder 7
Control signal is transmitted and received to control the entire system. The key input unit 11 and the remote controller 13 are provided with various keys (not shown) for operating the optical disk reproducing apparatus, and the user operates the keys to operate the optical disk reproducing apparatus. Is available.

Further, in addition to the above, a memory 14 and a display unit 10 are connected to the CPU 9. The memory 14
A RAM (random access memory) for storing various control information and the like. When a key is input during reproduction of the optical disk, search information for searching a reproduction position of the optical disk being reproduced is stored. By operating a search-back key (not shown) provided on the unit 11 and the remote controller 13, a key input command pressed during reproduction is canceled, and the optical disk being reproduced when the key input is made The reproduction can be resumed from the reproduction position. In addition, the display unit 10 includes:
Title number, chapter number, playback time,
Various information such as the current time is displayed so that the user can know the reproduction state of the optical disk and the like.

Next, an explanation will be given based on a flowchart of FIG. 2 showing the operation of the optical disk reproducing apparatus according to the embodiment of the present invention.

When the reproduction of the optical disk is started and there is a key input during the reproduction of the optical disk, the control of the CPU branches from the main program (not shown) to the subprogram of step S1 and proceeds to step S2.

In step S2, it is determined whether the key input is a search back key. If the key input is not the search back key, the process proceeds to step S5, and if the key input is the search back key, the process proceeds to step S3.

In step S3, it is determined whether or not search information for searching for a reproduction position of the optical disk is stored in the memory. When the search information is stored in the memory, the process proceeds to step S4, and when the search information is not stored in the memory, the process proceeds to step S7 and returns to the main program.

In step S4, the search information stored in the memory is read, and a search back is executed based on the read search information. In other words, the key input command is canceled during the reproduction of the optical disk, the reproduction position of the optical disk being reproduced at the time of the key input is searched, and the reproduction of the optical disk is resumed from the searched reproduction position.

In step S5, a title or chapter search of the optical disc is performed, and the process proceeds to step S6.

In step S6, search information for searching for the reproduction position of the optical disk being reproduced at the time of the key input is stored in the memory, and the flow advances to step S7 to return to the main program.

In the present invention, when a key input is made during reproduction of an optical disk, search information for searching for a reproduction position of the optical disk being reproduced is stored in a memory. Therefore, even when a key other than the title or chapter key, for example, a fast-forward or rewind key is pressed during the reproduction of the optical disk, the search information for searching the reproduction position of the optical disk being reproduced when the key is pressed is not included. Since the data is stored in the memory, by pressing the search back key, the reproduction can be resumed from the reproduction position of the optical disk which was being reproduced when the fast forward or rewind key was pressed.

Further, a description will be given based on an explanatory diagram showing a search-back operation of the optical disk reproducing apparatus according to the embodiment of the present invention in FIG.

When the title or chapter key is pressed during reproduction of the optical disk, that is, when the title or chapter key is pressed at point a, search information for searching the reproduction position of point a is stored in the memory. The stored data is searched for a title or a chapter, moved to the point b, and reproduction of the optical disk is started from the point b.

When the search-back key is pressed while the optical disk is being played back from the point b, that is, when the title or chapter key input at the point a is canceled at the point c, The search information for searching the reproduction position is stored in the memory, and the reproduction of the optical disk is resumed by returning to the point a based on the search information of the point a stored in the memory.

A description will be given with reference to FIG. 4 showing the operation of canceling the search back of the optical disk reproducing apparatus according to the embodiment of the present invention.

Returning to point a, when the reproduction of the optical disk is resumed, when the search back key is pressed, ie, d
At the point, when the search back key input at the point c is canceled, search information for searching the reproduction position at the point d is stored in the memory, and the search information stored in the memory is stored in the memory.
Based on the point search information, the operation returns to the point c and the reproduction of the optical disk is resumed. At this time, since the search information at the point d is stored in the memory, it is possible to return to the point d again and resume the reproduction of the optical disk from the point d.

[0029]

As described above, according to the optical disk apparatus of the present invention, the search information for searching the reproduction position of the optical disk when a key input is made during the reproduction of the optical disk is stored in the memory. The reproduction of the optical disk can be resumed from the reproduction position that was being reproduced at the time of the key input based on the search information stored in the. As a result, if a key is erroneously pressed during reproduction of the optical disk, the key returns to the reproduction position of the optical disk that was being reproduced when the key was erroneously pressed, based on the search information stored in the memory. hand,
Playback can be resumed.

The optical disk reproducing apparatus according to the first aspect of the present invention, when a key input is made during reproduction of the optical disk,
Search information for searching for the reproduction position of the optical disk being reproduced is stored in the storage means, and the reproduction position of the optical disk is searched based on the search information stored in the storage means to resume the reproduction of the optical disk. ing. Therefore, when a key is erroneously pressed, the key input can be canceled and the reproduction of the optical disc can be resumed from the reproduction position where the key was erroneously pressed.

In the optical disk reproducing apparatus according to the present invention, when a key input is made during reproduction of the optical disk, search information for searching for a reproduction position of the reproduced optical disk is stored in the storage means. Thus, a command input by a key is executed. Therefore, when a key is pressed during reproduction of the optical disk, the reproduction position of the optical disk being reproduced can be stored.

According to a third aspect of the present invention, there is provided an optical disk reproducing apparatus which executes a key-input instruction and, when the optical-disk reproduction is being performed, cancels the key-input instruction and cancels the key input. Search information for searching for the reproduction position of the optical disk that was being played back when the command was canceled, and searching for the reproduction position of the optical disk that was being played back when there was a key input. Reproduction of the optical disk is resumed from the reproduction position. Therefore, when a key is pressed by mistake during the reproduction of the optical disk, the reproduction of the optical disk can be resumed by returning to the reproduction position of the optical disk that was being reproduced when the key was pressed by mistake.

According to the fourth aspect of the present invention, there is provided an optical disk reproducing apparatus which executes a key input command, and when the key input command is canceled while the optical disk is being reproduced, the key input is performed. Search information for searching for the reproduction position of the optical disk that was being played back when the command was canceled, and searching for the reproduction position of the optical disk that was being played back when there was a key input. Reproduction of the optical disk is resumed from the reproduction position. Therefore, if the key input is erroneously canceled during the reproduction of the optical disk, it is possible to return to the reproduction position of the optical disk that was being reproduced when the key input was erroneously canceled, and resume the reproduction of the optical disk.

In the optical disk reproducing apparatus according to the fifth aspect of the present invention, key input can be performed by key operation of a remote controller of the optical disk apparatus. Therefore, it can be operated away from the optical disk reproducing device.

In the optical disk reproducing apparatus according to the sixth aspect of the present invention, key input can be performed by a key operation of a key input section of the optical disk reproducing apparatus. Therefore, even if the remote controller is lost, the optical disk reproducing device can be operated by operating the keys of the key input unit.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an optical disk reproducing device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the optical disc reproducing device according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a search-back operation of the optical disc reproducing device according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a search-back canceling operation of the optical disc reproducing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 optical disk 2 optical pickup 3 spindle motor 4 servo circuit 5 synchronization detection / AD conversion circuit 6 demodulation / error correction circuit 7 decoder 8 DA conversion circuit 9 central processing unit (CPU) 10 display unit 11 key input unit 12 reception unit 13 remote controller 14 memory

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/93 H04N 5/93 Z

Claims (6)

[Claims] In an optical disk reproducing apparatus for reproducing an optical disk such as a digital video disk, when a key is input during reproduction of an optical disk, search information for searching a reproduction position of the optical disk being reproduced is stored in a storage means. Means for executing the keyed command, and, when the keyed command is canceled, searching for a reproduction position of the optical disk based on search information stored in the storage means. An optical disc reproducing apparatus comprising: a search-back means for resuming reproduction of the optical disc from the set reproduction position. 2. When there is a first key input during reproduction of an optical disk, first storage information for searching a reproduction position of the optical disk being reproduced is stored in the storage means, and the first search information is stored in the storage means. 2. The optical disk reproducing apparatus according to claim 1, wherein the instruction input by a key is executed. 3. When the first key input instruction is executed and the optical disk is being played back, and when there is a second key input for canceling the first key input instruction, Second search information for searching for the reproduction position of the optical disk being reproduced when the second key input is made is stored in the storage means, and the first search information stored in the storage means is stored. 2. A reproduction position of the optical disk being reproduced when the first key input is performed is searched based on the first key input, and reproduction of the optical disk is resumed from the searched reproduction position. An optical disk reproducing apparatus according to claim 1. 4. When the second key input command is executed and the optical disk is being reproduced, and when there is a third key input for canceling the second key input command, the third key input is performed. Third search information for searching for the reproduction position of the optical disk being reproduced when the third key input is made is stored in the storage means, and the second search information stored in the storage means is stored. 2. A reproduction position of the optical disk being reproduced when the second key input is made is searched based on the second key input, and reproduction of the optical disk is resumed from the searched reproduction position. An optical disk reproducing apparatus according to claim 1. 5. The optical disk reproducing apparatus according to claim 1, wherein the key input is performed by a key operation of a remote controller of the optical disk reproducing apparatus. 6. The optical disk reproducing apparatus according to claim 1, wherein the key input is performed by a key operation of a key input unit of the optical disk reproducing apparatus.