JP2008159143A - Optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk drive configured to display a time specified beforehand from reproduction time and an image to be reproduced at the time together and allowing a user to perform time search playback from a desired scene. <P>SOLUTION: A controller 6 instructs an OSD (On Screen Display) processing part 8 to generate and output an OSD display signal showing a time of reproduction progress information currently recorded on a storage part 11 and the image corresponding to the reproduction progress information. Thereby, in a television 101, a time selection screen as shown in the Fig. 7 is displayed. While viewing the selection screen of the Fig. 7, the user selects and inputs one time from a time list with a selection key. In this case, since corresponding image is displayed for every time, the user can selectively input the time to reproduce the desired scene. The controller 6 instructs a PU head 2 to reproduce from the time which is selectively input. Thereby, the user can perform time search playback from the desired scene. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus that reproduces video and audio recorded on an optical disc such as a CD and a DVD, and more particularly to an optical disc apparatus having a time search reproduction function.

  2. Description of the Related Art Conventionally, an optical disk apparatus that reproduces video and audio recorded on an optical disk such as a CD and a DVD has been put into practical use and is widely used. Among the conventional optical disk apparatuses, there is an optical disk apparatus having a time search reproduction function. The time search reproduction is reproduction in which a predetermined time is input from the reproduction time of data recorded on the optical disc and the head is cued from the middle. The predetermined time is an elapsed time when data recorded on the optical disc is reproduced from the head.

In this time search reproduction function, the user inputs a predetermined time during which the desired scene (scene) was reproduced during the previous normal reproduction to the optical disc apparatus.
When a predetermined time is input from the reproduction time, the optical disk device reproduces the optical disk from the predetermined time. Thereby, the user was watching from the scene reproduced at the predetermined time.
On the other hand, in Patent Document 1, a playback device is proposed.
JP 2006-139844 A

However, it is difficult to understand the scene that is played back during the predetermined time by using only the time information. Therefore, when performing time search reproduction, the user has to input a predetermined time appropriately. Alternatively, the user has to input a predetermined time using the contents of the optical disc reproduced during the previous normal reproduction as a clue, that is, using his own memory as a clue.
Therefore, in the conventional optical disc apparatus, it is difficult for a user to reproduce from a desired scene in time search reproduction. As a result, the conventional optical disc apparatus has a low utilization rate of time search reproduction.

  The present invention intends to solve such a conventional problem, and displays a designated time designated in advance from the reproduction time and an image reproduced at that time together, and allows the user to select a desired scene. An object of the present invention is to provide an optical disc apparatus configured to be able to perform time search reproduction.

  The optical disc apparatus of the present invention has the following configuration in order to solve the above problems.

(1) Reproducing means for irradiating an optical disk set in the apparatus main body with a laser beam from a pickup and reading and reproducing data from the optical disk;
An operation means for receiving an input of a predetermined time from the reproduction time of the data recorded on the optical disc and receiving an instruction of time search reproduction for reproducing from the predetermined time;
An optical disc apparatus comprising: a playback control unit that instructs the playback unit to start playback when the time search playback is instructed by the operation unit;
Storage means for storing the reproduction progress information indicating the designated time designated in advance from the reproduction time and the image reproduced at the designated time in association with each other;
The reproduction control means indicates the designated time indicated by the reproduction progress information stored in the storage means and an image corresponding to the reproduction progress information before the predetermined time is input by the operation means. Generate and output a display signal.

  First, a first scene in which the playback progress information and its image are recorded in the storage means, a specified time of the playback progress information recorded in the storage means, and a second scene in which the image is displayed and time-searched and played back, Divided into

In this configuration, the second scene is assumed.
The optical disc apparatus in this configuration has a time search reproduction function. This time search reproduction is a reproduction in which a predetermined time is input from the reproduction time of data recorded on the optical disc and starts from the middle (that is, the input predetermined time). The display signal may be an OSD (On Screen Display) signal. The display signal output from the reproduction control means is input to, for example, a display device connected to the optical disk device. The display device is, for example, a television or a monitor. The display unit processes the display signal and displays a designated time of the reproduction progress information stored in the storage means and an image corresponding to the reproduction progress information.
The user selects and inputs one specified time (predetermined time) from the list of specified times while looking at the display screen. At this time, since the corresponding image is displayed at each designated time, the user can selectively input the designated time during which a desired scene is reproduced.
Then, the reproduction control unit instructs the reproduction unit to perform reproduction from the selected and designated time.
Thereby, the user can perform time search reproduction from a desired scene. Accordingly, the utilization rate of time search reproduction is also improved.

(2) The operation means has a registration key for designating and registering the designated time during reproduction of the optical disc by the reproduction means,
The reproduction control means includes
An image to be played back at the specified time specified by the registration key is acquired via the playback means,
Reproduction progress information indicating the designated time designated by the registration key and an image reproduced at the designated time are associated with each other and recorded in the storage unit.

In this configuration, the first scene is assumed. The user registers a designated time during which a desired scene is reproduced with a registration key.
In this configuration, when the designated time is designated by the registration key, the reproduction control means acquires an image reproduced at the designated time from the reproduction means, and records the reproduction progress information and the image in association with each other in the storage means. . The designated time registered here is displayed in the second scene.
As a result, in the second scene, the registered designated time and the desired scene to be reproduced at the designated time are displayed on the display.
Therefore, the user can perform time search reproduction from a desired scene. Therefore, the utilization rate of time search reproduction is improved.

(3) The reproduction control means includes:
An ID that is pre-recorded on the optical disc and uniquely identifies the individual optical disc is acquired from the optical disc that has designated the specified time with the registration key, and recorded in the storage means together with the reproduction progress information,
Before outputting the display signal, it is determined whether or not the ID of the optical disc currently set in the apparatus main body and the ID stored in the storage means match, and if they do not match The output of the display signal is prohibited.

There is no point in displaying the specified time registered in the first scene in the second scene when the optical disk in which the specified time is registered and the optical disk currently set in the apparatus main body are not the same optical disk. In this case, if the designated time registered in the first scene is displayed in the second scene, the user may be confused.
In this configuration, by determining whether or not both IDs match, it is determined whether or not the optical disk in which the specified time is registered and the optical disk currently set in the apparatus main body are the same optical disk.
The designated time registered in the first scene is displayed in the second scene only when the optical disk in which the designated time is registered and the optical disk currently set in the apparatus main body are the same optical disk. Therefore, there is no wrong display.
This avoids confusion for the user.
Note that the following configuration may be added to the above configuration. The storage means is a nonvolatile memory. Thereby, the contents registered in the storage means are held in the apparatus main body even when the power is turned off.

  According to the present invention, the user can perform time search reproduction from a desired scene. Accordingly, the utilization rate of time search reproduction is also improved.

  Hereinafter, an optical disc apparatus according to an embodiment of the present invention will be described.

  FIG. 1 is a block diagram showing a main configuration of an optical disc apparatus according to an embodiment of the present invention. The optical disc apparatus 1 is a so-called DVD player, and includes a control unit 6 that controls the operation of each part of the apparatus body 1, a pickup head 2 that reads data from the optical disc 100 (hereinafter referred to as a PU head 2), and the like. A reproduction circuit 3 such as an RF amplifier, an operation unit 10 that receives a user operation, and a remote controller 12 that remotely operates the apparatus main body 1 are provided. Further, the optical disc apparatus 1 includes a display unit 9 for displaying information, a storage unit 11 for storing data, an audio processing unit 5 for converting audio data into an analog reproduced audio signal, and image data converted into an analog reproduced image signal. When converted to, an OSD processing unit 8 that generates an OSD image and an image combining unit 13 that generates a composite image are provided.

  The optical disc 100 is, for example, a CD or a DVD.

The PU head 2 includes a laser diode (LD), a collimator lens, a beam splitter, an objective lens, a photodetector, a thread motor, and an actuator (not shown).
The PU head 2 is movably attached to an axis extending in the radial direction of the optical disc 100. The sled motor moves the PU head 2 in the radial direction of the optical disc 100.
The LD is a light source that outputs laser light, and the photodetector is formed of a plurality of light receiving elements, and detects reflected light from the optical disc 100. In the photodetector, for example, the light receiving area is divided into four substantially equally, and four light receiving areas are formed.
The objective lens adjusts the irradiation time of the laser beam on the optical disc 100. Further, the actuator moves the objective lens in the direction in which the objective lens is brought into contact with or separated from the optical disc 100 and in the radial direction of the optical disc 100.

The operation during playback will be described.
The PU head 2 irradiates the optical disc 100 with a laser beam having a reading power, and detects reflected light from the optical disc 100 with a photodetector. Thereby, the information recorded on the optical disc 100 is optically read.

  The reproduction circuit 3 generates an RF signal based on the outputs of the plurality of light receiving elements in the PU head 2 and amplifies the RF signal. Then, the reproduction circuit 3 processes the RF signal and extracts image and sound data. Here, the extracted image and audio data is encoded by, for example, MPEG. Then, the reproducing circuit 3 decodes these data. Then, the reproduction circuit 3 outputs the audio data to the audio processing unit 5 and the image data to the image synthesis unit 13 while synchronizing these data.

The audio processing unit 5 converts the audio data into an analog reproduced audio signal, and outputs the reproduced audio signal to the external television 101.
If the television 101 is digitally compatible (for example, HDMI standard), it may be output digitally.

  The OSD processing unit 8 incorporates an OSD image memory (not shown) (not shown). The OSD image memory is composed of, for example, a flash memory. The OSD processing unit 8 generates a character or figure OSD image based on the data stored in the OSD image memory based on the control signal given from the control unit 6, and outputs it to the image composition unit 13.

  Based on the control signal supplied from the control unit 6, the image composition unit 13 generates a composite image obtained by combining the OSD image output from the OSD processing unit 8 with the image based on the image data output from the reproduction circuit 3. .

Then, the image composition unit 13 converts the composite image signal into an analog reproduction image signal and outputs the analog reproduction image signal to the external television 101. Alternatively, the image composition unit 13 converts the image data output from the reproduction circuit 3 into an analog reproduction image signal and outputs the analog reproduction image signal to the external television 101. Alternatively, the image composition unit 13 converts the OSD image data output from the OSD processing unit 8 into an analog reproduction image signal and outputs the analog reproduction image signal to the external television 101.
If the television 101 is digitally compatible (for example, HDMI standard), it may be output digitally.

  A television 101 is connected to the sound processing unit 5 and the image synthesis unit 13. The television 101 processes a signal output from the optical disc apparatus 1 to display an image on a screen or emit a sound.

  The user can view an image based on the reproduced image signal output from the audio processing unit 5 and the image synthesizing unit 13 and an audio based on the reproduced audio signal on the television 101.

The operation unit 10 is used by the user to input various commands (commands) to the optical disc apparatus 1. The operation unit 10 is provided with a plurality of keys for receiving user operations. A command input by the user to the optical disc apparatus 1 is transmitted to the control unit 6.
Among a plurality of keys, a playback key for instructing playback of the optical disc 100, a stop key for instructing stop of playback of the optical disc 100, and a specified time for time search playback during playback are registered. A registration key for performing a search, a time search reproduction key for displaying a selection screen for a designated time for time search reproduction, and a selection key for selecting and inputting the designated time.

  The operation unit 10 is provided with a remote control signal detection unit (not shown). When a command such as power ON / OFF, channel switching, volume adjustment, or the like is input to the remote control signal detection unit from the outside of the apparatus body using the remote control 12, the remote control signal detection unit receives the command from the remote control 12. The command signal is received and transmitted to the control unit 6. The remote controller 12 is provided with the same keys as the operation unit 10.

  The display unit 9 displays the time, the setting state of the optical disc apparatus 1 and the like.

  The storage unit 11 is composed of, for example, a hard disk or an EEPROM, and stores a main control program for the apparatus main body 1.

  The control unit 6 is constituted by a microcomputer, for example. The control unit 6 also includes a RAM (not shown) as a work field for developing the main control program and the like, and a register (not shown) for setting a flag when one designated time is registered during reproduction. ) And built-in. The control unit 6 controls each unit of the optical disc device 1 in accordance with a command input from the user to the optical disc device 1.

  In an actual optical disc apparatus, at the time of reading, tracking servo control for adjusting the irradiation time of the laser beam to the center of the track of the optical disc and focus servo control for adjusting the focusing time of the laser beam to the recording surface of the optical disc are performed. However, illustration is omitted in the embodiment of the present invention.

Here, the PU head 2, the playback circuit 3, the sound processing unit 5, and the image synthesis unit 13 correspond to the “playback unit” of the present invention. The control unit 6, the OSD processing unit 8, and the image composition unit 13 correspond to the “reproduction control means” of the present invention. The operation unit 10 and the remote controller 12 correspond to the “operation unit” of the present invention.
In this embodiment, the television 101 is used as a display. However, a monitor may be used for implementation.

FIG. 2 is a diagram showing a storage area of the optical disc 100. The storage area of the optical disc 100 is divided into a lead-in area 92, a data area 93, and a lead-out area 94 from the inner periphery to the outer periphery.
The lead-in area 92 is an area where TOC data of data recorded in the data area 93 on the optical disc 100 is recorded. The TOC data includes information about whether the stored data has been finalized, the date when the data was stored, the title information of the stored data, the address information of the stored data on the optical disc 100, and the like. Yes. In this lead-in area 92, an ID that is recorded in advance and uniquely identifies the individual optical disk 100 is recorded.

  The data area 93 is an area where stored data is recorded.

  The lead-out area 94 is an area that is created when stored data is finalized. This finalization is a process for preparing recording information so as to be compatible with other optical disc apparatuses. By performing finalization, the optical disc 100 can be reproduced in other optical disc apparatuses.

  In this embodiment, the first scene in which the playback progress information and its image are recorded in the storage unit 11, the designated time of the playback progress information recorded in the storage unit 11 and the image are displayed, and the time search playback is performed. It is divided into two scenes.

First, the first scene will be described.
FIG. 3 is a flowchart showing an operation performed by the control unit 6 of the optical disc apparatus according to the embodiment of the present invention. This operation is performed when the user presses the reproduction key.

  When the reproduction key is pressed, the control unit 6 starts a reproduction operation (S1). Thereby, the user views an image based on the reproduced image signal output from the audio processing unit 5 and the image synthesizing unit 13 and an audio based on the reproduced audio signal on the television 101.

  During the reproduction (No in S2 determination), the control unit 6 determines whether or not the registration key is pressed (S3).

When the registration key is pressed during reproduction, the control unit 6 records the designated time designated by the registration key and the image reproduced at the designated time in association with the storage unit 11 (S4). ). And the control part 6 returns to S2, and continues a process. To describe S4 in detail, the reproduction circuit 3 cuts out only one I picture from the MPEG stream flowing through the reproduction circuit 3 based on an instruction from the control unit 6, and transmits the I picture to the control unit 6. Thereby, the control part 6 acquires the image reproduced | regenerated in designated time. The control unit 6 records this image in the storage unit 11 in S4.
In this embodiment, an I picture of a still image is recorded in the storage unit 11, but a moving image may be used in the implementation. In the case of a moving image, in S103 of FIG. 6 described later in the second scene, the user can more reliably perform time search reproduction from a desired scene.

  Here, in S3 and S4, the user can register the specified time using the registration key during reproduction.

  FIG. 4 is a diagram showing, in time series, the timing at which the user designates and registers the designated time. FIG. 5 is a diagram showing the contents stored in the storage unit 11. During playback of the optical disc 100, the user presses the registration key, for example, at the timing shown in FIG. Thereby, in S4, the reproduction progress information indicating the designated time and the image reproduced at the designated time are registered in the storage unit 11 in association with each other.

As a result, the registered designated time and the desired scene reproduced at the designated time are displayed on the television 101 in S103 of FIG. 6 described later in the second scene (see FIG. 7 described later). . Therefore, the user can perform time search reproduction from a desired scene. Therefore, the utilization rate of time search reproduction is improved.
In addition, since the storage unit 11 is composed of an EEPROM, the contents registered in the storage unit 11 are retained in the apparatus body even when the power is turned off.

  In this embodiment, the designated time is registered in the storage unit 11 as reproduction progress information. However, in the implementation, the address of the optical disc 100 may be registered in the storage unit 11 as reproduction progress information.

  When the reproduction is finished by pressing the stop key or the reproduction data stream reaches the end, the control unit 6 finishes the reproduction operation (S5).

  Then, the control unit 6 determines whether or not the designated time is registered during the reproduction (S6). In this determination, when one designated time is registered during reproduction, the control unit 6 sets a flag in a built-in register (not shown), and the control unit 6 checks whether the flag is set in S6. Is done.

  If the designated time is not registered during the reproduction, the control unit 6 ends this process.

  On the other hand, if the designated time is registered during reproduction, the control unit 6 acquires an ID that is recorded in advance in the lead-in area 92 of the optical disc 100 and uniquely identifies the individual of the optical disc 100 from the optical disc 100, and As shown in FIG. 5, it records in the memory | storage part 11 (S7). Here, the recorded ID is used in S102.

Next, the second scene will be described.
FIG. 6 is a flowchart showing an operation performed by the control unit 6 of the optical disc apparatus according to the embodiment of the present invention. This operation is performed when the user presses the reproduction key.

  When the reproduction key is pressed, the control unit 6 investigates the lead-in area of the optical disc currently set in the apparatus main body 1 by the PU head 2 (S101). As a result, the control unit 6 acquires the ID recorded in the lead-in area of the optical disc via the reproduction circuit 3.

  The control unit 6 determines whether or not both the ID of the optical disk currently set in the apparatus main body 1 and the ID recorded in the storage unit 11 match (S102). In this determination, it is determined whether the optical disk in which the specified time is registered and the optical disk currently set in the apparatus main body 1 are the same optical disk. If the optical disks are not the same, it is meaningless to display the designated time registered in the first scene, and confuse the user.

  If the two IDs match, the control unit 6 generates and outputs an OSD display signal indicating the designated time of the playback progress information recorded in the storage unit 11 and an image corresponding to the playback progress information. The OSD processing unit 8 is instructed (S103). Specifically, the control unit 6 records the designated time of the reproduction progress information recorded in the storage unit 11 and an image corresponding to the reproduction progress information in the flash memory of the OSD processing unit 8. The OSD processing unit 8 generates an OSD display signal and outputs it to the image composition unit 13. The image composition unit 13 converts the OSD display signal into an analog reproduction image signal and outputs the analog reproduction image signal to the external television 101. Thereby, on the television 101, the selection screen for the designated time shown in FIG. 7 is displayed.

  FIG. 7 is a diagram illustrating a display example of a selection screen for a designated time. While viewing the selection screen of FIG. 7, the user selects and inputs one specified time from the list of specified times using a selection key. At this time, since the corresponding image is displayed at each designated time, the user can selectively input the designated time during which a desired scene is reproduced.

Then, the control unit 6 instructs the PU head 2 to perform playback from the designated time selected and input (S104). And the control part 6 complete | finishes this process.
Thereby, the user can perform time search reproduction from a desired scene. Accordingly, the utilization rate of time search reproduction is also improved.

  In S103, the control unit 6 may generate an OSD display signal and output it to the display unit 9. In this case, a selection time selection screen shown in FIG.

  On the other hand, if it is determined in S102 that the two IDs do not match, the control unit 6 ends this process. That is, the control unit 6 prohibits the OSD processing unit 8 from generating and outputting the OSD display signal. Thus, the designated time registered in the first scene is displayed in the second scene only when the optical disk in which the designated time is registered and the optical disk currently set in the apparatus main body 1 are the same optical disk. Therefore, it is not necessary to confuse the user with an incorrect display.

1 is a block diagram showing a main configuration of an optical disc apparatus according to an embodiment of the present invention. The figure which shows the storage area of the optical disk 100 The flowchart which shows the operation | movement which the control part 6 of the optical disk apparatus which is embodiment of this invention performs. A diagram showing the timing when a user registers with a specified time The figure which shows the memory content of the memory | storage part 11 The flowchart which shows the operation | movement which the control part 6 of the optical disk apparatus which is embodiment of this invention performs. Figure showing a display example of the specified time selection screen

Explanation of symbols

1-optical disk device 2-pickup head 3-reproduction circuit 4-image processing unit 5-audio processing unit 6-control unit 8-OSD processing unit 9-display unit 10-operation unit 11-storage unit 12-remote control 13-image composition Section 92-lead-in area 93-data area 94-lead-out area 100-optical disc 101-television

Claims (4)

Reproducing means for irradiating an optical disk set in the apparatus main body with a laser beam from a pickup and reading and reproducing data from the optical disk;
An operation means for receiving an input of a predetermined time from the reproduction time of the data recorded on the optical disc and receiving an instruction of time search reproduction for reproducing from the predetermined time;
An optical disc apparatus comprising: a playback control unit that instructs the playback unit to start playback when the time search playback is instructed by the operation unit;
The operation means has a registration key for designating and registering the designated time during reproduction of the optical disc by the reproduction means,
Storage means for storing the reproduction progress information indicating the designated time designated by the registration key from the reproduction time and the image reproduced at the designated time in association with each other;
The reproduction control means includes
An ID that is pre-recorded on the optical disc and uniquely identifies the individual optical disc is acquired from the optical disc with the designated time specified by the registration key, and recorded in the storage means together with the reproduction progress information,
Determining whether both the ID of the optical disc currently set in the apparatus main body and the ID stored in the storage means match,
(1) If the two IDs match, the designated time indicated by the reproduction progress information stored in the storage means and the reproduction progress information before the predetermined time is input by the operation means Generates and outputs a display signal indicating an image corresponding to
(2) An optical disc apparatus that prohibits output of the display signal if the two IDs do not match. Reproducing means for irradiating an optical disk set in the apparatus main body with a laser beam from a pickup and reading and reproducing data from the optical disk;
An operation means for receiving an input of a predetermined time from the reproduction time of the data recorded on the optical disc and receiving an instruction of time search reproduction for reproducing from the predetermined time;
An optical disc apparatus comprising: a playback control unit that instructs the playback unit to start playback when the time search playback is instructed by the operation unit;
Storage means for storing the reproduction progress information indicating the designated time designated in advance from the reproduction time and the image reproduced at the designated time in association with each other;
The reproduction control means indicates the designated time indicated by the reproduction progress information stored in the storage means and an image corresponding to the reproduction progress information before the predetermined time is input by the operation means. An optical disc apparatus that generates and outputs a display signal. The operation means has a registration key for designating and registering the designated time during reproduction of the optical disc by the reproduction means,
The reproduction control means includes
An image to be played back at the specified time specified by the registration key is acquired via the playback means,
3. The optical disc apparatus according to claim 2, wherein reproduction progress information indicating the designated time designated by the registration key and an image reproduced at the designated time are recorded in the storage unit in association with each other. The reproduction control means includes
An ID that is pre-recorded on the optical disc and uniquely identifies the individual optical disc is acquired from the optical disc that has designated the specified time with the registration key, and recorded in the storage means together with the reproduction progress information,
Before outputting the display signal, it is determined whether or not the ID of the optical disc currently set in the apparatus main body and the ID stored in the storage means match, and if they do not match 4. The optical disc apparatus according to claim 3, wherein output of the display signal is prohibited.

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