JP2005167880A - Video reproducer for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the linkage of reproduced information easy to be understood at reproducing resuming time of a DVD in a DVD reproducer which temporarily stops reproducing of the DVD during running of a vehicle. <P>SOLUTION: In the DVD reproducer for reproducing a video, and a voice read from the DVD and via a display unit 2 and a speaker 3, the running state of the vehicle is decided by a running state decision unit 14. When the vehicle is transferred from the stop to the running state, a DVD reproduction controller 15 temporarily stops the video reproduction of the DVD and resumes the reproducing after the DVD is returned for a predetermined time when the vehicle is next stopped. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicular video reproduction apparatus that reads out and reproduces video information from, for example, a DVD (Digital Versatile Disc).

Conventionally, for example, as described in Japanese Patent Application Laid-Open No. H10-260260, a DVD video is stopped while a vehicle is running, and when a vehicle stop is detected, playback is resumed from the previous playback interruption point.
Japanese Patent Laid-Open No. 2003-21500

  However, in the above-described conventional technology, the playback of the DVD is interrupted when the vehicle traveling is detected, and when the vehicle stop is detected, the playback is resumed from the previous playback interruption point. When the vehicle is in a running state and the playback of the DVD video is stopped, the stop of the vehicle is detected next, and even if playback is started from that position, the line connection may not be understood.

  The present invention has been proposed in view of the above-described problems, and provides a video playback device for a vehicle that stops video playback while the vehicle is running and enables video playback that satisfies the driver. Objective.

  The video playback device for a vehicle according to the present invention includes a vehicle running state detecting means for detecting the running state of the vehicle, and playing back the video information from the storage medium while the vehicle is determined to be stopped. Playback control means for pausing the playback of video information while it is determined to be in a running state, and when resuming playback after pausing video information playback, the playback resume position of the storage medium is set from the stop position at the time of pause. Returning means for returning for a predetermined time is provided.

  According to the vehicular video playback apparatus of the present invention, even when the vehicle is in a running state in the middle of a dialogue and the playback of video information is stopped, the stop of the vehicle is detected next, and the information is read from that position. When playback is resumed, playback is performed retroactively for a certain period of time, so the dialogue is repeated again, making it easier to understand the connection.

Next, an embodiment of the present invention will be described by way of example. FIG. 1 is a system block diagram showing a configuration of a first example in which the present invention is applied to a vehicle DVD playback apparatus.
The vehicle DVD playback apparatus 10 operates with a DVD playback unit 1 that plays back software stored on a DVD as a storage medium, a display unit 2 that plays back video, a speaker 3 that plays back audio, and a vehicle speed detection unit 4. And a signal from the vehicle speed detection unit 4 and a signal from the operation unit 5 are input to the DVD playback unit 1.

The vehicle speed detection unit 4 includes a vehicle wheel speed sensor, and outputs a value corresponding to the vehicle speed to the DVD playback unit 1 as a vehicle speed signal.
The operation unit 5 is composed of, for example, a push button switch (not shown) provided on the operation panel of the driver's seat, and outputs a signal instructing reproduction of the DVD to the DVD reproduction unit 1 by a user operation.
The display unit 2 has a function of displaying video information reproduced from the DVD to the user. This display part 2 consists of a liquid crystal display, for example.

The DVD playback unit 1 is provided with a microcomputer 11, a DVD video playback unit 12, and an audio playback unit 13.
The microcomputer 11 includes a traveling state determination unit 14 that determines whether the vehicle is stopped or traveling based on a vehicle speed signal, and a DVD reproduction control unit 15 that controls operations of the DVD video reproduction unit 12 and the audio reproduction unit 13.

The vehicle DVD playback apparatus 10 configured as described above starts DVD video / audio playback processing when an instruction signal for DVD video / audio playback is input from the operation unit 5. When the traveling state determination unit 14 determines that the vehicle is stopped based on a signal from the vehicle speed detection unit 4, a DVD drive signal is output from the DVD playback control unit 15 to the DVD video playback unit 12 and the audio playback unit 13.
The DVD video reproduction unit 12 outputs a video signal to the display unit 2, the video is displayed on the display unit 2, and the audio reproduction unit 13 outputs an audio signal to the speaker 3, and audio is played from the speaker 3.

Next, DVD playback processing in the DVD playback unit 1 will be described.
FIG. 2 is a flowchart for explaining the flow of DVD playback processing. The operation starts when a reproduction instruction signal is input from the operation unit 5 to the microcomputer 11 and thereafter executed every predetermined time.
First, in step 100, the traveling state determination unit 14 determines whether or not the vehicle is stopped.
When the vehicle is stopped, in step 110, the DVD playback control unit 15 starts playback of the DVD. When the vehicle is traveling, the reproduction of the DVD is not started, and step 100 is repeated.

  After starting the DVD reproduction, in step 120, the traveling state determination unit 14 determines whether or not the vehicle is traveling. This determination is repeated while the vehicle continues to stop, and when the vehicle is traveling, the process proceeds to step 130.

In step 130, the DVD playback control unit 15 outputs a signal for pausing DVD playback to the DVD video playback unit 12 and audio playback unit 13, and the DVD playback is interrupted.
Next, in this temporary stop state, in step 140, the traveling state determination unit 14 determines the traveling state of the vehicle.
When the vehicle is stopped, in step 150, the DVD playback control unit 15 returns the playback restart position of the disc for a predetermined time (for example, 10 seconds), and then returns to step 110. The DVD video reproduction unit 12 and the audio reproduction unit 13 resume the reproduction of the DVD from the returned position, output and display the video signal on the display unit 2, respectively, output the audio signal to the speaker 3 and play the audio.
Thereafter, the routine proceeds to step 120 and the routine is repeated.

  In the present embodiment, the display unit 2 and the speaker 3 constitute the display means of the invention. Further, steps 100, 120 and 140 in the flowchart constitute the running state determination means of the invention, steps 110 and 130 constitute the regeneration control means, and step 150 constitutes the return means.

  As described above, in this embodiment, even when the DVD is being played back and the vehicle is in a running state in the middle of the dialogue and the playback of the DVD video is stopped, the next stop of the vehicle is detected and the DVD When resuming playback, the dialogue is repeated again in order to play back for a fixed time, so the connection is easy to understand.

Next, a second embodiment will be described.
In the first embodiment, when the reproduction of the DVD is resumed, the time is uniformly returned for a fixed time, but in this embodiment, the return time is variable. If the pause time is long, other audio sources are played.
FIG. 3 is a system block diagram showing the configuration of the second embodiment. The same components as those in the first embodiment shown in FIG.
In the vehicle DVD playback apparatus 10A, the microcomputer 11A of the DVD playback unit 1A includes a DVD stop time calculation unit 16 that counts a pause (interruption) time of DVD playback in addition to the running state determination unit 14, and the DVD stop time. A DVD return time calculation unit 17 for calculating the return time of DVD playback based on the above.

The vehicle DVD playback apparatus 10A is further provided with another audio source unit 6 to provide other audio, for example, radio or CD music, when the pause time is long. The other audio source unit 6 and the audio reproduction unit 13 of the DVD reproduction unit 1A are connected to the speaker 3 via the switch SW, and one of them is connected to the speaker 3 by the control of the switch SW by the DVD reproduction control unit 15A. Can be switched to.
Other configurations are the same as those of the first embodiment of FIG.

FIG. 4 is a flowchart showing the flow of DVD playback processing in the second embodiment. Steps indicating the same procedure as in the first embodiment are denoted by the same step numbers, and detailed description thereof is omitted. This procedure is also executed every predetermined time as in the first embodiment.
The operation of the second embodiment is different from the operation of the first embodiment in the processing from when the vehicle changes from a stop to a running state until DVD playback is paused and then DVD playback is resumed.
If the determination result by the traveling state determination unit 14 in step 120 is the traveling state, the process proceeds to step 200 where the DVD reproduction control unit 15A pauses the DVD reproduction, and the DVD stop time calculation unit 16 resets the stop time. (T = 0).

Thereafter, in step 210, the traveling state determination unit 14 determines whether the vehicle is stopped. If it is determined that the vehicle has not stopped, the routine proceeds to step 220, where the DVD stop time calculation unit 16 counts the DVD playback pause time (T = T + elapsed time).
In step 230, the DVD playback control unit 15A determines whether the pause time of DVD playback has exceeded a predetermined time. If the pause time exceeds the predetermined time, in step 240, the DVD playback control unit 15A switches the switch SW from the audio playback unit 13 to another audio source unit 6 so that other music can be heard.
Then, the process returns to step 210.

If it is determined in step 210 that the vehicle is stopped, the process proceeds to step 300. If the audio source unit 6 is switched to another audio source in step 240 before this, the DVD reproduction control unit 15A returns the switch SW to the audio reproduction unit 13 side.
In step 300, the DVD return time calculation unit 17 calculates the return time R (= f (T)) based on the pause time counted so far.
Specifically, the return time is set to be longer as the pause time is longer.
Next, in step 310, the DVD video reproduction unit 12 returns the DVD by R time according to a command from the DVD reproduction control unit 15A, and then returns to step 110. In step 110, the reproduction of the video is resumed on the display unit 2, and the audio flows from the speaker 3 by the audio signal of the audio reproduction unit 13 in synchronization therewith.

FIG. 5 shows a calculation example showing the relationship between the pause time of DVD playback and the DVD return time.
In this example, there are three types of return times for the same pause time, that is, setting 1 (short), setting 2 (normal) and setting 3 (long). Thus, the driver selects the return time for the same stop time. For example, when the pause time is within 3 minutes, the return time is selected from 5 seconds, 10 seconds, and 20 seconds. The following shows an example in which three return times are set for each of the pause times within 10 minutes, within 30 minutes, and over 30 minutes.

  In the present embodiment, the display unit 2 and the speaker 3 constitute the display means of the invention. Also, steps 100, 120, and 210 in the flowchart of FIG. 4 are the running state determination means of the invention, steps 110, 200, 230, and 240, and step 220 that pauses the DVD is the playback control means, and the time is counted. Step 220 to be performed constitutes the elapsed time calculation means of the invention, and steps 300 and 310 constitute the return means.

As described above, in the second embodiment, by changing the DVD playback return time according to the playback pause time, the flow of the story can be understood when the vehicle travel time is long and the playback stop time is long. Since it is played back to a large extent, it becomes easier to understand the connection with the part that was seen last time.
In addition, since the return time can be selected according to the driver's preference, anyone can enjoy the DVD playback after the pause without any discomfort.
Furthermore, when the playback stop time is long, it is possible to prevent the frustration while waiting for DVD playback by playing other music, and to give the driver satisfaction.

FIG. 6 is a system block diagram showing the configuration of the third embodiment.
In this embodiment, in addition to calculating the return time when resuming playback of the DVD based on the actual pause time, the previous playback time is also taken into consideration. Furthermore, when the continuous running time expected when entering the running state is long, other music or the like is immediately played.
The same components as those of the second embodiment shown in FIG.

In the vehicle DVD player 10B, the microcomputer 11B of the DVD player 1B includes a DVD player that counts the DVD playback time in addition to the running state determination unit 14, the DVD stop time calculator 16, and the DVD return time calculator 17. A time calculation unit 19 is provided, and a road information storage unit 7 that is connected to the DVD playback control unit 15B and inputs road information to the DVD playback unit 1B is arranged.
Other configurations are the same as those of the second embodiment of FIG.

FIG. 7 is a flowchart showing the flow of processing when a DVD is played back by the DVD playback unit 1B. The same steps as those in the second embodiment are denoted by the same step numbers as those in the flowchart of FIG. This process is also executed every predetermined time as in the second embodiment.
When the reproduction of the DVD is started in step 110, the reproduction time T2 is reset in the next step 115, and the process proceeds to step 120.

If the result of determination by the traveling state determination unit 14 in step 120 indicates that the vehicle is traveling, in step 200, the DVD reproduction control unit 15B pauses the DVD reproduction, and the DVD stop time calculation unit 16 determines the stop time. Reset T1.
Then, in step 250, the DVD playback control unit 15B calculates an expected time for the vehicle to travel continuously without stopping based on the information from the road information storage unit 7, and this is equal to or greater than a predetermined value (for example, 3 Min) or more.
If the expected continuous running time is equal to or greater than the predetermined value, the process proceeds to step 260, where the DVD playback control unit 15B switches the switch SW from the audio playback unit 13 to another audio source unit 6 to listen to, for example, before playback of the DVD. Temporarily move to a sound-only source (radio, CD, etc.).
If the expected time is smaller than the predetermined value, the process proceeds to step 270.

On the other hand, if it is determined in step 120 that the vehicle is still stopped, the process proceeds to step 125, and the DVD playback time calculation unit 19 counts the DVD playback time (T2 = T2 + elapsed time).
While the vehicle continues to stop, steps 120 and 125 are repeated.

In step 270, the traveling state determination unit 14 determines whether the vehicle is stopped.
When the vehicle is still running, the process proceeds to step 280, where the DVD stop time calculation unit 16 counts the DVD playback pause time (T1 = T1 + elapsed time).
Steps 270 and 280 are repeated while the vehicle continues running.

If it is determined in step 270 that the vehicle has stopped, the process proceeds to step 320. If the audio source unit 6 has been switched to another audio source in step 260 before this, the DVD playback control unit 15B returns the switch SW to the audio playback unit 13 side.
In step 320, the DVD playback control unit 15B compares the playback time T2 of the DVD played this time with the return time R calculated based on the pause time T1.
If T2 is greater than R, the process proceeds to step 330, where the DVD return time calculation unit 17 calculates the return time based on the DVD pause time T1 (R = f (T1)).
When T2 is equal to or less than R, the process proceeds to step 340, and the DVD return time calculation unit 17 sets R = T2.

  When the return time R is obtained in step 330 or 340, the DVD playback control unit 15B outputs a signal indicating the return time R to the DVD video playback unit 12 and the audio playback unit 13 in step 350, and returns to step 110. As a result, the DVD reproduction is resumed from the position returned by R hours.

In the present embodiment, the display unit 2 and the speaker 3 constitute the display means of the invention, and the road information storage unit 7 constitutes the road information storage means.
Also, steps 100, 120 and 270 in the flowchart of FIG. 7 are the running state determination means of the invention, steps 110, 200, 250 and 260 are the regeneration control means, step 125 is the regeneration time calculation means, and step 280 is the elapsed time. The calculation means and steps 320, 330, 340 and 350 constitute return means.

As described above, in this embodiment, the continuous running time (DVD playback stop time) is predicted from the information from the road information storage unit 7 immediately after the DVD playback is temporarily stopped. The audio immediately flows and you can enjoy driving by being free from the irritation of waiting time.
In addition, since the DVD return time is calculated in consideration of the DVD playback time, it is possible to prevent the DVD from being returned to the previously returned position and always enjoy a comfortable DVD playback.

It is a block diagram which shows the structure of the 1st Example which applied this invention to DVD reproducing | regenerating apparatus. It is a flowchart which shows the flow of the reproduction | regeneration processing of DVD. It is a block diagram which shows the structure of a 2nd Example. It is a flowchart which shows the flow of the reproduction | regeneration processing of DVD in a 2nd Example. It is a figure which shows the relationship between the reproduction pause time of DVD, and the return time of DVD. It is a block diagram which shows the structure of a 3rd Example. It is a flowchart which shows the flow of the reproduction | regeneration processing of DVD in a 3rd Example.

Explanation of symbols

1, DVD playback unit 2, display unit 3, speaker 4, vehicle speed detection unit 5, operation unit 6, other audio source unit (audio source unit)
7. Road information storage (road information storage means)
10, 10A, 10B Vehicle DVD playback device 11, 11A, 11B Microcomputer 12 DVD video playback unit 13 Audio playback unit 14 Running state determination unit 15, 1A, 15B DVD playback control unit 16 DVD stop time calculation unit 17 DVD return time Calculation unit 19 DVD playback time calculation unit

Claims (8)

In a vehicle video playback apparatus that reads video information from a storage medium and plays back the video information on a display means.
Vehicle running state judging means for judging the running state of the vehicle;
Reproduction control that reproduces the video information while the vehicle is determined to be stopped by the traveling state determination means and pauses the reproduction of the video information while the vehicle is determined to be in a traveling state. Means,
A vehicular video playback apparatus comprising: a return unit for returning a playback resume position of the storage medium for a predetermined time from a stop position at the time of pause when the video information playback is resumed after the pause. An elapsed time calculating means for calculating an elapsed time from when the vehicle is stopped to a running state and video information reproduction is temporarily stopped until the next stop,
2. The vehicular video playback apparatus according to claim 1, wherein the predetermined time is variably set based on the elapsed time.   3. The vehicular video playback apparatus according to claim 2, wherein the predetermined time is set longer as the elapsed time is longer. Provide an audio source unit that outputs audio information,
4. The vehicular video reproduction apparatus according to claim 2, wherein the reproduction control means reproduces audio information from the audio source unit when the elapsed time is equal to or longer than a predetermined time.   The vehicle according to any one of claims 2 to 4, wherein road information storage means for storing road information is provided, and the elapsed time is estimated based on road information from the road information storage means. Video playback device. A playback time calculation means for calculating the playback time of the video information is provided,
The playback time before the pause is set to the same value as the playback time when the playback time is less than or equal to the return time based on the elapsed time from the subsequent playback pause to the next stop. The vehicle video playback device according to any one of 2 to 5.   6. The vehicular video playback apparatus according to claim 1, wherein the storage medium is a DVD. In a vehicle video playback method for reading video information from a storage medium and playing back the video information,
Determine the running state of the vehicle,
When it is determined that the vehicle is stopped, video information is played back.
If the vehicle enters a running state during playback of video information, the video information playback is paused,
A video playback method for a vehicle, wherein when the vehicle enters a stop state during the pause of the playback, the video information is played back after returning the playback resume position of the storage medium for a predetermined time from the stop position at the time of the pause. .

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