JP4203830B2 - Disc player - Google Patents

Description

  The present invention relates to a disc reproducing apparatus capable of reproducing video data recorded on a disc-shaped recording medium such as a DVD or a Blu-ray Disk.

In recent years, with the start of BS / terrestrial digital broadcasting, the increase in capacity of disk-shaped recording media, and the spread of optical communication services, higher definition of video has progressed.
For example, current terrestrial analog broadcasts and DVDs (Digital Versatile Disk / Digital Video Disk) use SD (Standard Definition) video with video formats of “480i” and “480p”. On the other hand, in BS / terrestrial digital broadcasting, Blu-ray Disc, and the like, HD (High Definition) videos having video formats “1080i”, “720p”, and “1080p” are used.

  At present, since HD video and SD video are mixedly used, a display device such as a television receiver is required to be able to handle both HD video and SD video. Therefore, when the resolution of the video source (for example, 1920 × 1080 (full HD) or 720 × 480 (SD)) and the resolution of the display device are different, the video source is scaled according to the resolution of the display device, The resolution of the video is matched with the resolution of the display device. For example, there are Patent Documents 1 and 2 as techniques relating to the scaling processing.

JP 2005-338185 A JP 2004-274770 A

  By the way, a disc playback device such as a DVD player plays back video data recorded on an optical disc as a disc-shaped recording medium, while a predetermined video (for example, a demo) is played when the optical disc is not played back (stopped). (Video) is generally displayed. The resolution of the demonstration video is, for example, 1920 × 1080 (full HD).

  In such a disc playback device, when the disc is stopped from the state where the SD video recorded on the DVD is being played back, the video signal output to the display device changes from SD video to HD video. It becomes. In addition, when the SD video recorded on the DVD is reproduced from the stopped state where the demonstration video is displayed, the video signal output to the display device changes from the HD video to the SD video.

  However, the display device cannot predict that the input video signal from the disc playback device will change from SD video to HD video or from HD video to SD video, so when the video signal switches, There is a problem that the change of the angle of view can be seen and the display screen is disturbed (see FIG. 5A). Note that such a problem does not occur when HD video recorded on a Blu-ray Disk is played back (see FIG. 5B). In addition, when the resolution of the demo video is SD, the same problem occurs when the HD video recorded on the Blu-ray Disk is played back and stopped.

  That is, in the conventional disc playback apparatus, only one type of video data for demonstration is prepared, and thus the above-described problem occurs depending on the resolution of the playback video. In addition, the above-described problem occurs every time video data recorded on an optical disk is played back and stopped, which is troublesome for the viewer even for a moment, and is not preferable.

  The present invention displays a suitable demo video according to the video resolution (HD, SD) based on the video data recorded on the optical disc, thereby disturbing the display screen that occurs during an optical disc playback operation or a stop operation. An object of the present invention is to provide a disc reproducing apparatus capable of reducing the above.

  The present invention has been made in order to achieve the above-described object, and a video having a predetermined resolution (for example, HD video, SD video) can be displayed on a predetermined display device and recorded on a disc-shaped recording medium. Disc display means for reading first video data, storage means for recording second video data, and video (playback video) based on the first video data read by the disk playback means Display control means for causing the display device to display a video (demo video) based on the second video data when the reading process of the first video data by the disc playback means is stopped while being displayed on the device; The display control means includes the second playback unit according to the resolution of the video based on the first video data that has been played back immediately before. Characterized in that it is capable of changing the resolution of the image based on the image data.

  Specifically, the second video data includes a plurality of video data having different resolutions (for example, HD video data, SD video data), and the display control means is configured to reproduce the first video data that has been played back immediately before. Selecting one video data from among the plurality of second video data according to the resolution of the video based on the video data, and displaying the video based on the selected second video data on the display device. It is characterized by.

  Further, the storage means records at least SD video data having a standard image quality resolution (720 × 480) and HD video data having a higher image quality resolution (eg, 1920 × 1080) than the standard image quality. It is characterized by that.

  As a result, when a stop operation is performed during playback of a DVD (SD video is displayed), the resolution of the video played back immediately before is SD, so that the second video data (demonstration video data) is used. The SD video data is selected, and a demo video based on the SD video data is displayed on the display device. If a stop operation is performed during Blu-ray Disk playback (HD video is displayed), the resolution of the video that was played back immediately before is HD, so the second video data (video data for demonstration) ) HD video data is selected, and a demonstration video based on the HD video data is displayed on the display device.

  The second video data for demonstration is not limited to SD video data and HD video data, and video data having other resolutions may be stored in the storage means. As a result, it is possible to cope with the case where the video is further refined.

  Still further, the display control means displays the video having the same resolution as the video based on the first video data that has been reproduced until just before by performing a scaling process on the second video data. It is characterized by being displayed. This ensures that the resolution of the playback video that has been played back immediately before and the resolution of the demo video are the same.

  According to the present invention, in the disc playback apparatus, the display control means has a video (demo) based on the second video data in accordance with the resolution of the video (playback video) based on the first video data that has been played back immediately before. The resolution of the video) is changed, that is, the resolution of the playback video and the demonstration video can be made the same. Thus, the display screen can be prevented from being disturbed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a disc playback apparatus 100 according to the present invention. In the disc playback apparatus 100 of the present embodiment, video (for example, HD video and SD video) having different resolutions can be displayed on a display device such as a TV monitor based on video data recorded on the optical disc.

  The disc playback apparatus 100 according to the present embodiment includes a control unit 10, a storage unit 20, an input unit 30, a disc drive 40, an audio signal processing unit 50, and a video signal processing unit 60. Each block is electrically connected via a bus 70.

  The control unit 10 records a CPU 11 that controls each unit and performs predetermined calculations to control the operation of the disk reproducing device 100, a RAM 12 that is used as a work memory for the CPU 11, a control program that is executed by the CPU 11, and the like. ROM13.

  The storage unit 20 stores, for example, demonstration video data (second video data) for displaying a demonstration video on a display device such as a TV monitor in a stopped state where the optical disk is not reproduced.

  The input unit 30 is various operation buttons provided on the front panel or the remote control device of the disc playback apparatus 100. By operating these various operation buttons, processing such as reproduction / stop of video data recorded on the disc-shaped recording medium is executed.

  The disk drive 40 reads and reproduces digital video / audio data recorded on an optical disk (for example, DVD or Blu-ray Disk) as a disk-shaped storage medium (disk reproduction means).

  The audio signal processing unit 50 performs various digital audio processes such as a decoding process and a surround process on the digital audio data read from the optical disk loaded in the disk drive 40. Then, it is converted into a predetermined audio signal and output to an audio output device such as an AV amplifier or a speaker.

  The video signal processing unit 60 converts the digital video data (first video data) read from the optical disk loaded in the disk drive 40 or the demo video data (second video data) stored in the storage unit 20. Digital video processing such as decoding processing is performed, converted into a predetermined video signal, and output to the display device. Thereby, the video (reproduced video or demo video) based on the respective video data is displayed on the display device.

  In the present embodiment, the control unit 10 functions as a display control unit. For example, the first video data is read from the optical disc by the disc drive 40 based on the input of an operation signal for instructing disc playback from the input unit 30, and the video signal processing unit is added to the read first video data. A predetermined process is performed at 60 to display a video (reproduced video) based on the first video data on the display device. Further, based on the input of an operation signal for instructing to stop the disk from the input unit 30, the reading process of the first video data by the disk drive 40 is stopped and the second video data is read from the storage unit 20. The video signal processing unit 60 performs predetermined processing on the read second video data, and displays a video (demo video) based on the second video data on the display device.

  At this time, in the disc playback apparatus 100 according to the present embodiment, the resolution of the demonstration video displayed when the disc is stopped is changed according to the resolution of the playback video that has been played back immediately before.

(First embodiment)
In the first embodiment, two types of demo video data, a demo SD video data with a resolution of 720 × 480 and a HD video data for a demo with 1920 × 1080, are stored in the storage unit, and are played back immediately before. One of the demonstration video data is selected and used according to the resolution of the reproduced video.

FIG. 2 is a flowchart showing a demo screen display process according to the first embodiment executed in the disc playback apparatus 100.
First, in step S101, it is determined whether the video data (first video data) recorded on the optical disc is being reproduced. If it is determined that the optical disk is being reproduced, the process proceeds to step S102. On the other hand, if it is determined that the optical disc is not being played back, the processing ends. At this time, the demonstration video is displayed on the display device, but the demonstration video may be based on either the demonstration HD video data or the demonstration SD video data. For example, the demo video data used last time may be used.

  In step S102, it is determined whether a stop operation has been performed during reproduction of the optical disc. If it is determined that the optical disk stop operation has been performed, the process proceeds to step S103. On the other hand, when it is determined that the optical disk stop operation has not been performed, the processing is ended as it is. At this time, a video (reproduced video) based on the video data (first video data) read from the optical disk is displayed on the display device.

  Next, in step S103, the resolution of the playback video that has been played back immediately before is acquired. In step S104, it is determined whether the playback video is an SD video. For example, a playback video when a DVD is played is an SD video, and a playback video when a Blu-ray Disk is played is an HD video.

  Next, when it is determined in step S104 that the reproduced video is an SD video, the SD video data for demonstration is read from the storage unit 20 (step S105), and the demo video based on this is displayed on the display device (step S106). On the other hand, if it is determined in step S104 that the reproduced video is not an SD video (that is, an HD video), the demo HD video data is read from the storage unit 20 (step S107), and the demonstration video based on this is displayed on the display device. (Step S107).

  As described above, in the first embodiment, when a stop operation is performed during playback of a DVD (SD video is displayed), SD video data is selected as demo video data, and a demo video based on the SD video data is displayed on the display device. Will be displayed. When a stop operation is performed during Blu-ray Disk playback (HD video is displayed), the HD video data is selected as video data for demonstration, and the demonstration video based on this is displayed on the display device. It will be.

(Second Embodiment)
In the second embodiment, as the demonstration video data, one type of demonstration HD video data having a resolution of 1920 × 1080 is stored in the storage unit, and the demonstration is performed according to the resolution of the reproduced video that has been played back immediately before. Video data is subjected to scaling processing and used.

FIG. 3 is a flowchart showing a demo screen display process according to the second embodiment executed in the disc playback apparatus 100.
First, in step S201, it is determined whether the video data (first video data) recorded on the optical disc is being reproduced. If it is determined that the optical disk is being reproduced, the process proceeds to step S202. On the other hand, if it is determined that the optical disc is not being played back, the processing ends. At this time, a demonstration video based on the demonstration HD video data is displayed on the display device.

  In step S202, it is determined whether a stop operation has been performed during reproduction of the optical disc. If it is determined that an optical disk stop operation has been performed, the process proceeds to step S203. On the other hand, when it is determined that the optical disk stop operation has not been performed, the processing is ended as it is. At this time, a video (reproduced video) based on the video data (first video data) read from the optical disk is displayed on the display device.

  Next, in step S203, the resolution of the playback video that has been played back immediately before is acquired. In step S204, it is determined whether the playback video is an SD video. For example, a playback video when a DVD is played is an SD video, and a playback video when a Blu-ray Disk is played is an HD video.

  Next, when it is determined in step S204 that the reproduced video is an SD video, the demo HD video data is read from the storage unit 20, and a scaling process is performed to change the resolution of the demo HD video data to the SD resolution ( In step S205, a demonstration video based on this is displayed on the display device (step S206). On the other hand, if it is determined in step S204 that the reproduced video is not an SD video (that is, an HD video), the demonstration HD video data is read from the storage unit 20, and the demonstration video based on this is displayed on the display device (step S207). .

  As described above, in the second embodiment, when a stop operation is performed during playback of a DVD (SD video is displayed), demo SD video data is generated from the demo HD video data, and the demo video based on this is generated. It will be displayed on the display device. When a stop operation is performed during Blu-ray Disk playback (HD video is displayed), a demo video based on the demo HD video data is displayed on the display device.

As described above, in the disc playback apparatus according to the first and second embodiments, when the disc is stopped from the state in which the SD video recorded on the DVD is being played back, the demo video also becomes the SD video. There is no change in the video signal output to the display device. Further, even when the SD video recorded on the DVD is reproduced from the stopped state where the demo video is displayed, the video signal output to the display device does not change (see FIG. 4A).
Similarly, when the HD video recorded on the Blu-ray Disk is played back / stopped, there is no change in the video signal output to the display device (see FIG. 4B).

  Therefore, according to the disc playback apparatus of the present embodiment, it is possible to reliably reduce the disturbance of the display screen that occurs during an optical disc playback operation or a stop operation.

As mentioned above, although the invention made by this inventor was concretely demonstrated based on embodiment, this invention is not limited to the said embodiment, It can change in the range which does not deviate from the summary.
For example, in the first embodiment, video data with a resolution of 1920 × 1080 or video data with a resolution of 1280 × 720 may be prepared as the demonstration HD video data. In this case, the video data for demonstration is not selected according to whether the reproduced video is SD video or HD video, but according to the resolution of the reproduced video, for example, when the resolution of the reproduced video is high, 1920 × 1080 demo video is displayed. If the data is low, 1280 × 720 demo video data may be selected.

  Further, the first and second embodiments may be combined.

It is a block diagram which shows the structure of the disc reproducing | regenerating apparatus concerning one Embodiment of this invention. 4 is a flowchart showing a demo screen display process according to the first embodiment executed in the disc playback apparatus 100. 12 is a flowchart showing a demo screen display process according to the second embodiment executed in the disc playback apparatus 100. FIG. 11 is an explanatory diagram of a display screen (display device) when an optical disc playback operation / stop operation is performed in the disc playback apparatus according to the present embodiment. It is explanatory drawing of the display screen (display apparatus) when performing the reproduction | regeneration operation / stop operation of an optical disk in the conventional disc reproduction | regeneration apparatus.

Explanation of symbols

10 Control unit (display control means)
20 storage unit (storage means)
30 Input unit 40 Disc drive (disc playback means)
50 Audio signal processing unit 60 Video signal processing unit 70 Bus 100 Disc playback device

Claims (5)

A video having a predetermined resolution can be displayed on a predetermined display device,
Disk reproducing means for reading the first video data recorded on the disk-shaped recording medium;
Storage means in which SD video data having standard image quality resolution and second video data including HD video data having higher image quality resolution than the standard image quality are recorded;
When the video based on the first video data read by the disc playback means is displayed on the display device, the reading of the first video data by the disc playback means is stopped. Display control means for displaying video based on the video data on the display device;
A disc player comprising:
The display control means selects and selects either the SD video data or the HD video data as the second video data according to the resolution of the video based on the first video data that has been played back immediately before A disc reproducing apparatus for causing a video based on the video data to be displayed on the display device. A video having a predetermined resolution can be displayed on a predetermined display device,
Disk reproducing means for reading the first video data recorded on the disk-shaped recording medium;
Storage means for recording the second video data;
When the video based on the first video data read by the disc playback means is displayed on the display device, the reading of the first video data by the disc playback means is stopped. Display control means for displaying video based on the video data on the display device;
A disc player comprising:
The display control means is capable of changing the resolution of the video based on the second video data in accordance with the resolution of the video based on the first video data that has been played back immediately before. apparatus. The second video data includes a plurality of video data having different resolutions,
The display control means selects one video data from the plurality of second video data according to the resolution of the video based on the first video data that has been reproduced until immediately before, and selects the selected first video data. 3. The disk reproducing apparatus according to claim 2, wherein a video based on the video data of 2 is displayed on the display device.   4. The disk reproducing apparatus according to claim 3, wherein the storage means stores at least SD video data having a standard image quality resolution and HD video data having a higher image quality resolution than the standard image quality. .   The display control means causes the display device to display a video having the same resolution as the video based on the first video data that has been reproduced until just before by performing a scaling process on the second video data. 5. A disk reproducing apparatus according to claim 2, wherein the disk reproducing apparatus is a disk reproducing apparatus.

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