JP2009205737A - Disk reproducing device and disk reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk reproducing device by which music or a video can be viewed and listened to while reproduced succeeding to the last position even in the case of a vehicle having a remote control engine starter, and to provide a disk reproducing method. <P>SOLUTION: The disk reproducing device includes: a decode part reproducing information recorded in a disk medium and decoding; a storage part storing the last position indicating the last reproduction position at the time of interruption if a power source is turned off during playback of the disk medium and reproduction is interrupted; and a control part in which when the power source is turned off and the power source is turned on again, information of the last position is read out from the storage part, and when indication of continuous reproduction is given by a user (or a door of the vehicle is opened/closed), continuous reproduction is executed from the last position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk playback apparatus for playing back information recorded on a disk medium such as a DVD (Digital Versatile Disk), CD (Compact Disk), MD (Mini Disk), HDD (Hard Disk Drive), etc. The present invention relates to a disc playback apparatus and a disc playback method that enable playback processing after interruption to be performed without discomfort.

  Conventionally, in a disk reproducing apparatus, laser light is irradiated from an optical pickup to an optical disk (disk medium), and information from the optical disk is read and reproduced. Examples of the disk medium include DVD, CD, and MD. In-vehicle disk playback devices are also popular.

  By the way, in a conventional in-vehicle disc playback device, when the engine is stopped and the power is turned off during disc playback, or when the mode is switched to another mode (for example, radio broadcast reception mode) during disc playback, etc. In this case, playback of the disc may be interrupted. For this reason, when the engine is started and the power is turned on next time, it has a function that allows the reproduction to be continued from the position where the reproduction was interrupted (last position).

  Patent Document 1 describes an example of a disk playback device. When MD playback is interrupted, the pickup is locked at the final reading position, the song number at that time is stored, and playback is started. An example is described in which reproduction is started from a position at the time of interruption based on data such as a song number stored at the time. In such a disk reproducing apparatus, when the engine is stopped and then restarted and the power is turned on, the disk can be automatically reproduced from the last position.

On the other hand, recently, a vehicle having a remote control engine starter that can start an engine by remote operation has been widespread. In this case, it may take several minutes or more to actually get on the vehicle after the engine is started by the remote controller. Therefore, when a disc is automatically played back from the time when the engine is started, when the user gets into the vehicle, the playback position of the disc may be several minutes ahead of the last position, You will not be able to watch the video continuously, and you will feel uncomfortable. In addition, in order to continue viewing from the last position, it is necessary to perform playback by performing a return operation, which is inconvenient in that it takes time.
Japanese Patent Laid-Open No. 7-121930

  In the conventional disk playback device, playback can be continued from the position where playback was previously interrupted when the power was turned on, but in a vehicle having a remote control engine starter, the engine is actually started after the engine is started by the remote control. It may take several minutes to get into the vehicle. For this reason, when the user gets into the vehicle, the playback position has advanced a few minutes ahead of the last position, and music or video cannot be viewed continuously.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a disc playback apparatus and disc playback method capable of playing music or video continuously from the last position for viewing even in a vehicle having a remote control engine starter. And

  The present invention according to claim 1 is a disk reproducing apparatus for reproducing information recorded on a disk medium and displaying the information on a display unit, wherein the decoder unit reproduces and decodes the information recorded on the disk medium. A storage unit for storing a last position indicating a final reproduction position at the time of interruption when the power is turned off during reproduction of the disk medium, and when the power is turned off and the power is turned on again. And a control unit that reads the last position from the storage unit and executes continuous playback from the last position when a user gives an instruction to continue playback.

  According to a sixth aspect of the present invention, there is provided an in-vehicle disk reproducing apparatus that reproduces information recorded on a disk medium and displays the information on a display unit, and reproduces and decodes the information recorded on the disk medium. And a storage unit for storing a last position indicating the final playback position at the time of interruption when the power is turned off during playback of the disk medium, and the power is turned off and the power is turned on again. And a controller that reads out the last position from the storage unit and executes reproduction after the last position when the opening / closing of a vehicle door is detected.

  According to a ninth aspect of the present invention, there is provided a disk reproducing method for reproducing information recorded on a disk medium and displaying the information on a display unit, wherein the information recorded on the disk medium is reproduced and decoded to obtain the information. When the playback is interrupted because the power is turned off during playback of the disk medium, the last position indicating the final playback position at the time of the interruption is stored in the storage unit, and the power is turned off and the power is turned on again. When turned on, the last position is read from the storage unit, and when the user gives an instruction to continue playback, the playback is continued from the last position.

  Further, the present invention as claimed in claim 11 is an in-vehicle disk reproducing method for reproducing information recorded on a disk medium and displaying it on a display unit, wherein the information recorded on the disk medium is reproduced and decoded. When the playback is interrupted because the power is turned off at the time of playback of the disk medium, the last position indicating the final playback position at the time of the interruption is stored in the storage unit, and the power is turned off again. When the power is turned on, the last position is read from the storage unit, and when opening / closing of the door of the vehicle is detected, reproduction is continued from the last position.

  In the disc player of the present invention, even a vehicle having a remote control engine starter can continue to play and view music or video from the position where playback was previously interrupted, and does not give the user a sense of incongruity. .

  Hereinafter, an embodiment of a disk reproducing apparatus of the present invention will be described with reference to the drawings.

 FIG. 1 is a block diagram showing a schematic configuration of a disk reproducing apparatus according to an embodiment of the present invention. In the following, a case where a DVD is reproduced as a disk medium will be described as an example.

 In FIG. 1, reference numeral 100 denotes a disk reproducing apparatus. A disc reproducing apparatus 100 rotates a disc medium 1 (for example, an optical disc such as a DVD) at a constant linear velocity by a spindle motor 2 and uses an optical pickup to record information recorded on the disc medium 1 (hereinafter simply referred to as a disc 1). 3 for playback. The disc playback apparatus 100 includes a controller 4 and an operation unit 5 that constitute a control unit.

 Reference numeral 200 denotes a vehicle control unit provided in the vehicle, which controls starting and stopping of the engine. The vehicle control unit 200 includes a remote controller / engine starter, and can start the engine by operating the remote controller 201 in addition to operating the engine key.

 In addition, the vehicle control unit 200 transmits vehicle information such as engine start information and door information when the vehicle door is opened and closed to the control unit 4 of the disc reproducing apparatus 100. The door information can be obtained by the detection unit 202 that detects opening / closing of the door. Transmission of vehicle information to the disc playback apparatus 100 can be performed via the BUS 203, for example.

 The controller 4 of the disc playback apparatus 100 includes a CPU 41. In response to vehicle information from the vehicle control unit 200 or operation of the operation unit 5, the controller 4 performs power on / off of the disc playback apparatus 200, disc playback, etc. Perform various controls.

 FIG. 2 is a block diagram showing a detailed configuration of the disc playback apparatus 100 of the present invention. In FIG. 2, reference numeral 1 denotes a disk, which is rotated by a spindle motor 2 at a constant linear velocity. Information recording and reproduction with respect to the disk 1 is performed by the optical pickup 3.

 The optical pickup 3 is driven in the radial direction of the disk 1 by a moving mechanism including a sled (SLED) motor 6, and the sled motor 6 is controlled by a sled motor control circuit 7. The movement mechanism including the thread motor 6 and the thread motor control circuit 7 constitute a movement control unit of the optical pickup 3.

 The optical pickup 3 is provided with an objective lens 31, which is moved by the biaxial actuator 32 in the focusing direction (optical axis direction of the lens 31) and the tracking direction (a direction orthogonal to the optical axis of the lens 31). ) Is controlled.

  Information recorded on the disk 1 is read by the optical pickup 3 and supplied to the signal processing circuit 8. The signal processing circuit 8 includes an RF amplifier, and a focus control signal, a tracking control signal, and a data reproduction signal are output from the RF amplifier.

  A signal for focus control is supplied to the focusing control circuit 9, and an output signal of the focusing control circuit 9 is supplied to the actuator 32. As a result, the light beam is controlled to be always just focused on the disk 1.

  The tracking control signal is supplied to the tracking control circuit 10. The tracking control circuit 10 creates a track drive signal and supplies it to the actuator 32. Thereby, the movement of the optical pickup 3 in the tracking direction is controlled. The track drive signal from the tracking control circuit 10 is also supplied to the sled motor control circuit 7. The spindle motor 2 is controlled by a motor control circuit 11.

  The optical pickup 3 can perform a search operation to search and move to the target address of the disk by controlling the thread motor 6 by the thread motor control circuit 7. Further, the tracing operation is performed by tracking correction.

  Further, the signal for data reproduction from the signal processing circuit 8 is amplified by the amplifier circuit 12, is then waveform-equalized by an equalizer (not shown), and is further binarized by a binarization circuit. 13 is supplied. The data reproduction circuit 13 demodulates the binarized data based on the reproduction clock from the PLL circuit 14. The data reproduction circuit 13 includes an error correction circuit, performs error correction processing, and outputs digital data.

  The thread motor control circuit 7, the focusing control circuit 9, the tracking control circuit 10, the motor control circuit 11, the data reproduction circuit 13, and the PLL circuit 14 are connected to the bus 15, and these circuits are controlled by the controller 4 through the bus 15. Is done.

  The controller 4 constitutes a control unit, includes a CPU 41, and controls the operation of the disc reproducing apparatus 100 according to a program recorded in the ROM 16. In addition, a storage unit 17 is connected to the bus 15, and the storage unit 17 can store data processed by executing the program.

  A video / audio decoder 18 is connected to the bus 15. The video / audio decoder 18 decodes the video signal and the audio signal from the data reproduced by the data reproduction circuit 13, supplies the video signal to the display unit 19, and supplies the audio signal to the audio output unit (speaker) 20.

  Further, the operation unit 5 described above is connected to the bus 15. The operation unit 5 is operated by a user and includes, for example, a play button, a stop button, a fast reverse button, a fast forward button, a power button, and the like. In addition, a continuous playback button 51 is provided. The video / audio decoder 18 generates video and audio signals in a normal playback mode, a continuous playback mode, or the like under the control of the controller 4 in response to the operation of the operation unit 5.

  The vehicle information from the vehicle control unit 200 described above is supplied to the controller 4 via the BUS 203.

 Next, the operation of the disc playback apparatus 100 of the present invention will be described. The disc player 100 of the present invention is suitable for in-vehicle use, and when the power button is turned on, the power is turned on in conjunction with the start of the vehicle engine. When the disc 1 is inserted into the disc playback apparatus 100 in this state, the playback state is set and a playback video is displayed on the display unit 19. Also, audio is reproduced from the audio output unit 20.

  In this playback state, when the vehicle engine is stopped, the power of the disk playback device 100 is turned off and playback is interrupted. In a general disk reproducing device, when the engine is stopped and the reproduction is interrupted, the final reproduction position information (hereinafter referred to as the last position) immediately before the interruption is stored in the storage unit 17, and the engine is started again to supply power. When is turned on, the stored last position is read out, and playback is started from the point where it was interrupted.

  However, in the case of a vehicle having a remote control engine starter, the engine can be started by the remote control 201. Therefore, when the engine is started by the remote control 201, the power of the disk playback device is turned on and the disk playback is started. . For this reason, if it takes time for the user to start the engine and actually get on the vehicle, the playback position of the disc is advanced from the last position (for example, the position advanced several minutes or more). Therefore, the user cannot continuously view music or video. For this reason, in order to continue playback from the last position for viewing, it is necessary to perform a return operation, which is troublesome.

  Therefore, in the present invention, even if the engine of the vehicle is started, the reproduction start is waited until the user performs a continuous reproduction operation, and the reproduction is started after the user performs the continuous reproduction operation. There is.

 FIG. 3 is an operation explanatory diagram for explaining the operation of the disc reproducing apparatus 100 according to the embodiment of the present invention. In FIG. 3, the horizontal axis indicates the playback progress of the video content (disc 1). For example, one title of the content is represented by chapter 1 to chapter 99. In a DVD (for example, a movie disc), one title is usually attached to the main content, and one title is divided into a plurality of chapters.

  When the power is turned on and the reproduction of the disk 1 is started, the controller 4 stores information on the current reproduction position in the storage unit 17 periodically (for example, every second). The position information stored in the storage unit 17 is sequentially overwritten according to the reproduction progress, and the latest position information is updated and stored. The time interval for storing the position information is not limited to every second, but can be set to any time interval such as every 2 seconds or every 3 seconds.

  For example, when the engine is stopped and the power is turned off at the timing t1 during the reproduction of the chapter 2, the last reproduction position information (last position) at that time is held in the storage unit 17. A display image 191 in FIG. 3 shows an example of a reproduced image at the timing t1. Since the storage unit 17 is frequently written, a battery backup RAM such as SRAM is suitable.

  Next, when the engine is started at the timing t2 by the operation of the remote controller 201 and the power of the disc playback apparatus 100 is turned on, the controller 4 reads the last position recorded in the storage unit 17 and continues from the last position. Although playback is performed, the playback of the continuous playback is waited until the user operates the continuous playback button 51 of the operation unit 5 without immediately starting the playback.

  In FIG. 3, when the engine is started at the timing t2, the user gets into the vehicle, and the playback button 51 is operated at the timing t3, the controller 4 performs playback based on the last position read from the storage unit 17. Playback of the disc 1 is started from the position where it was interrupted. Therefore, as shown by the display image 192, the reproduction is continued from the position where the reproduction was interrupted.

  FIG. 4 is a flowchart for explaining the operation when reproduction is performed from the last position in the disc reproduction apparatus 100 of the present invention.

  Step S1 in FIG. 4 shows a state in which the disk 1 is being played with the power turned on. Step S2 is a step for determining whether the power is off. When the engine is stopped while the disc 1 is being reproduced, the controller 4 assumes that the power is turned off. The position is stored in the storage unit 17.

  Next, when the engine is started by the remote controller 201, the controller 4 returns the power to the on state in step S4. Further, the controller 4 reads out the last position recorded in the storage unit 17 in step S5, and prepares for reproduction from the last position. When the user operates the continuous playback button 51 of the operation unit 5 in step S6, the controller 4 starts playback from the last position in step S7.

  Step S8 is a step for ending reproduction. However, when the engine is stopped again and the power is turned off during the reproduction process of step S7, the process returns to step S2 and the same process is repeatedly executed.

  Therefore, according to the operation of the flowchart of FIG. 4, even when the engine is started by the remote controller 201, the engine is started to wait for the playback until the user continues to operate the playback button 51. Even if it takes time to get on the vehicle, the continuous reproduction of the disk 1 can be executed from the position where the reproduction is interrupted.

  Next, a disc reproducing apparatus according to the second embodiment of the present invention will be described. That is, in the above description, an example has been described in which playback is started after the user operates the playback button 51, but in the second embodiment, playback is started using vehicle door information. Is.

  In other words, since the door is opened when the user actually gets on the vehicle after starting the engine with the remote controller 201, the opening / closing of the door is detected by the detection unit 202, and the reproduction is performed based on the last position information. Is characterized by starting.

  For example, when the engine is started at the timing t2 in FIG. 3 and the opening / closing of the door is detected at the timing t3 slightly delayed, the controller 4 determines that the user has entered the vehicle at the timing t3, and the storage unit 17 Based on the last position read from, playback of the disk 1 is started from the position where playback was interrupted. Therefore, as shown by the display image 192, the reproduction is continued from the position where the reproduction is interrupted.

  Actually, since the user has time to fasten the seat belt after getting into the vehicle, the reproduction may be started with a slight delay from the timing t3 in consideration of the time until the user settles down.

  FIG. 5 is a flowchart for explaining the operation in the case of reproducing from the last position in the disc reproducing apparatus 100 according to the second embodiment of the present invention.

  Step S11 in FIG. 5 shows a state in which the power is turned on and the disc 1 is being reproduced. Step S12 is a step for determining whether the power is off. When the engine is stopped while the disc 1 is being reproduced, the controller 4 assumes that the power is turned off. In step S13, the last at the time when the power is turned off. The position is stored in the storage unit 17.

  Next, when the engine is started by the remote controller 201, the controller 4 returns the power to the on state in step S14. Further, the controller 4 reads out the last position recorded in the storage unit 17 in step S15, and prepares for reproduction from the last position. When the opening / closing of the door is detected in step S16, the controller 4 starts reproduction from the last position in step S17.

  Step S18 is a step for ending reproduction. However, if the engine is stopped again and the power is turned off during the reproduction process of step S17, the process returns to step S12 and the same process is repeatedly executed.

  Therefore, according to the operation of the flowchart of FIG. 5, even when the engine is started by the remote controller 201, the reproduction waits until the vehicle door is opened and closed and the user gets on. Then, when the engine is started and actually enters the vehicle, the continuous reproduction of the disk 1 is executed from the position where the reproduction was interrupted first.

  Further, according to the flowchart of FIG. 5, even when the engine is started with the key without using the remote controller 201, the reproduction of the disc 1 is not started when the door is open, and the door is closed. Since the reproduction is started, it is possible to avoid a situation where the reproduction proceeds when the door is opened and a load is loaded.

  Note that the order of steps S5 and S6 in FIG. 4 and the order of steps S15 and S16 in FIG. 5 may be interchanged.

  As described above, in the disc playback apparatus of the present invention, even a vehicle having a remote control engine starter can continue to watch music or video from the position where playback was previously interrupted, giving the user a sense of discomfort. There is nothing.

  In the above description, the example in which the information on the elapsed playback time of the video content is stored as the last position indicating the final playback position of the disc 1 has been described. Other recorded information (for example, chapter information) can also be used.

  In the above description, the DVD has been described as an example of the disk 1, but information recorded on a disk medium such as a navigation disk, CD (Compact Disk), MD (Mini Disk), or HDD (Hard Disk Drive). The embodiment of the present invention can also be applied to the case of reproducing.

  For example, in the case of a CD playback device, if the engine is stopped while a CD is being played back, the CD track information may be stored in the storage unit 17 as the last position information. Then, when the engine is started again, the operation of the continuous playback button 51 by the user or the opening / closing of the door may be detected, and the playback may be continued based on the last position.

  The present invention is not limited to the above description, and various modifications can be made without departing from the scope of the claims.

1 is a schematic configuration diagram showing a disc playback apparatus according to an embodiment of the present invention. FIG. 2 is an exemplary block diagram illustrating a detailed configuration of the disc reproducing apparatus according to the embodiment. Operation | movement explanatory drawing explaining operation | movement of the disc reproducing | regenerating apparatus concerning the embodiment. 7 is a flowchart for explaining the operation of the disc playback apparatus according to the embodiment. The flowchart explaining operation | movement of the disc reproducing | regenerating apparatus concerning other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Disk medium 2 ... Spindle motor 3 ... Optical pick-up 4 ... Controller 41 ... CPU
5 ... Operation unit 51 ... Continue playback button 6 ... Thread motor 7 ... Thread motor control circuit 8 ... Signal processing circuit 9 ... Focusing control circuit 10 ... Tracking control circuit 11 ... Motor control circuit 12 ... Amplifier circuit 13 ... Data reproduction circuit 14 ... PLL circuit 15 ... bus 16 ... ROM
17 ... Storage unit 18 ... Video / audio decoder 19 ... Display unit 20 ... Audio output unit 100 ... Disc playback device 200 ... Vehicle control unit 201 ... Remote control 202 ... Door open / close detection unit 203 ... BUS

Claims (12)

A disk playback device for playing back information recorded on a disk medium and displaying it on a display unit,
A decoder unit for reproducing and decoding information recorded on the disk medium;
A storage unit for storing a last position indicating a final reproduction position at the time of interruption when reproduction is interrupted by turning off the power during reproduction of the disk medium;
When the power is turned off and the power is turned on again, the last position is read from the storage unit, and when a user instructs to continue playback, the control unit executes continuous playback from the last position;
A disc playback apparatus comprising:   2. The disc reproducing apparatus according to claim 1, further comprising an operation unit operable by a user, wherein the instruction for continuous playback is made by a user operating a continuous playback button provided on the operation unit. The disc player is mounted on a vehicle, and the power is turned on in conjunction with the start of the engine of the vehicle.
3. The disc reproducing apparatus according to claim 2, wherein the control unit executes continuous reproduction from the last position when a user gets on the vehicle and operates the continuous reproduction button.  4. The disk reproducing apparatus according to claim 3, wherein the vehicle includes a remote control engine starter that starts an engine by remote operation, and the control unit returns the power to an on state by starting the engine.   2. The disk according to claim 1, wherein the storage unit stores, as the last position, information on elapsed playback time of the disk medium, chapter information recorded on the disk medium, or track information. Playback device. An in-vehicle disk playback device that plays back information recorded on a disk medium and displays the information on a display unit,
A decoder unit for reproducing and decoding information recorded on the disk medium;
A storage unit for storing a last position indicating a final reproduction position at the time of interruption when reproduction is interrupted by turning off the power during reproduction of the disk medium;
When the power is turned off and the power is turned on again, the controller reads out the last position from the storage unit, and when the opening / closing of the door of the vehicle is detected, the control unit executes reproduction from the last position;
A disc playback apparatus comprising:  7. The disc reproducing apparatus according to claim 6, wherein the vehicle includes a remote control engine starter that starts an engine by remote operation, and the control unit returns the power to an on state by starting the engine.   7. The disc according to claim 6, wherein the storage unit stores, as the last position, information on elapsed playback time of the disc medium, chapter information recorded on the disc medium, or track information. Playback device. A disc playback method for playing back information recorded on a disc medium and displaying it on a display unit,
Reproducing and decoding information recorded on the disk medium and displaying it on the display unit;
When the power is turned off during playback of the disk medium and playback is interrupted, the last position indicating the final playback position at the time of interruption is stored in the storage unit,
When the power is turned off and the power is turned on again, the last position is read from the storage unit, and when the user gives an instruction to continue playback, continuous playback is executed from the last position. Disc playback method.   10. The disc playback method according to claim 9, wherein the instruction for continuous playback is performed by a user operating a continuous playback button provided on an operation unit. An in-vehicle disk reproducing method for reproducing information recorded on a disk medium and displaying the information on a display unit,
Reproducing and decoding information recorded on the disk medium and displaying it on the display unit;
When the power is turned off during playback of the disk medium and playback is interrupted, the last position indicating the final playback position at the time of interruption is stored in the storage unit,
When the power is turned off and the power is turned on again, the last position is read from the storage unit, and when the opening / closing of the door of the vehicle is detected, the playback is continued from the last position. Method. The vehicle includes a remote control engine starter that starts an engine by remote control,
12. The disk reproducing method according to claim 11, wherein when the engine is started, the power is changed from off to on, and when the opening / closing of the door of the vehicle is detected, the reproduction is continued from the last position.

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