JP2012182741A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a viewer's physical condition to be considered without impairing usability for the viewer in a video display device for providing stereoscopic vision.SOLUTION: A video display device 100 comprises: display means 103 that displays three-dimensionally viewable video; counting means 104 that counts a first time as a time from a time point when the three-dimensional display is started; and message generation means 105 that, when the first time becomes a time corresponding to a preset second time, generates a message for calling attention to continuation of the three-dimensional display. The display means 103 displays the generated message.

Description

  The present invention relates to a video display device, and more particularly to a video display device that displays a stereoscopically visible video.

  When using a stereoscopic viewing (hereinafter, sometimes referred to as “3D”) function on a video display device such as a television, the viewer may be warned because the physical condition may be adversely affected if viewed continuously for a long time. This is stipulated in JEITA (Electronic Information Technology Industry Association) guidelines.

  There are various types of 3D technologies for displaying video on a flat surface and making viewers observing the video feel a three-dimensional effect, but the video content itself is divided into right-eye content and left-eye content. In many cases, the content distributor (for example, a broadcasting station) puts an alert before the start of the content.

  Some products equipped with a function for pseudo-converting normal 2D content into 3D automatically return to 2D display after a certain period of time.

  Patent Document 1 states that as a technique for alerting a video display device, the usage time of the device starts counting when the device starts to be used, and the set time is about to end immediately before the set time. Notification is disclosed (for example, paragraph 0032). In addition, the “seventh embodiment” also refers to the configuration in the case of 3D display. However, Patent Document 1 has a problem of time interval paralysis, which is a problem inherent to a head-mounted display in which external visual information is completely shut out, and the use start time of the device is set as the start time of use time counting. The technical background is significantly different from the present application.

JP 09-326977 A

  For example, even if a caution text is displayed at the beginning of a program, such as a television broadcast that distributes 3D content, the caution text is not read by a viewer who watches from the middle of the program. Therefore, it is necessary to give some appropriate attention on the receiving video display apparatus side.

  Also, in the case of a function that automatically cancels the 3D display after a certain period of time, the viewer does not consider the physical condition of the viewer himself / herself, so even if there is actually no problem with the physical condition of the viewer The 3D display may be canceled regardless of the intention of the user. In addition, even if the viewer changes in the middle, there is a possibility that the 3D display is automatically canceled even though there is actually no problem (this problem cannot occur in the head mounted display). Is an issue).

  The present invention has been made in view of the above circumstances, and provides a video display device capable of considering the physical condition of the viewer without impairing the usability of the viewer in the video display device that provides stereoscopic viewing. For the purpose.

  In order to achieve the above object, the present invention provides, as a first aspect, display means for displaying a stereoscopically viewable image and a first time that is a time from the start of displaying the stereoscopically viewable image. Counting means for counting and generating a message for calling attention to continue displaying a stereoscopically viewable video when the first time reaches a time corresponding to a preset second time And a message generation unit, wherein the display unit displays the generated message.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the video display apparatus which can consider a viewer's physical condition, without impairing a viewer's usability in the video display apparatus which provides a stereoscopic view.

It is a block diagram which shows the structure of embodiment of this invention. It is a flowchart which shows operation | movement of embodiment of this invention. It is a figure which shows the example of a display of the message of alerting in embodiment of this invention.

FIG. 1 shows the configuration of this embodiment.
The video display apparatus 100 according to the present embodiment has a function of receiving broadcast waves distributed from a broadcasting station, and a function of reading and playing a recording medium on which a video such as a DVD or a Blu-ray (registered trademark) disk is recorded. It comprises. Therefore, the video display device 100 is also a receiving / reproducing device.

  A broadcast wave from a broadcasting station includes content (television program) created for 3D display in advance or normal content (television program). The normal content is hereinafter referred to as 2D content. On the other hand, content (movies, etc.) supplied from a recording medium includes 3D content and 2D content. In this way, the content input to the video display device 100 is hereinafter referred to as “input video signal”. In addition, although the movie recorded on the television program and the recording medium was mentioned as an example of the video signal input, it does not intend to limit to these. Various types of contents are conceivable, and various means can be used as means for inputting a video signal (for example, an image taken by a video camera is input).

  As shown in FIG. 1, the video display device 100 includes a decoding / video generation unit 101, a video synthesis unit 102, a display unit 103, a count unit 104, a message generation unit 105, and a user interface 106.

  The decode / video generation unit 101 has a function of generating content video from an input video signal. Note that various methods are known to those skilled in the art, such as a hardware decoder and a method realized by software, as a method for realizing the decoding / video generation unit 101. Similarly, each functional block included in the video display device 100 is realized by hardware or software cooperating with the hardware.

  The decode / video generation unit 101 generates video by using a 2D, 3D, or pseudo-3D method for the decoded video signal. The user can arbitrarily select which method to display through the user interface 106. select. As a general usage, if the input video is 3D content (the content created for 3D display in which the video for the right eye and the video for the left eye are included in the video stream), the 3D display is selected. For 2D content (normal content), 2D display or pseudo 3D display is selected according to the viewer's preference.

  Pseudo 3D refers to what performs image analysis of 2D content, which is normal content, and automatically performs pseudo 3D display according to a predetermined algorithm. The predetermined algorithm is, for example, an algorithm that determines an object with a large motion in the image as a nearby object and an object with a small motion as a distant object. In accordance with this determination, the object determined to be closer is displayed with a pseudo 3D display with parallax.

  In other words, the 3D display includes a case where the content production side produces 3D content as intended, and a case where the content production side produces 3D content as a 2D content and the reception / playback side displays pseudo 3D content. There are two types of cases.

  The video synthesis unit 102 has a function of synthesizing the video generated by the decoding / video generation unit 101 and the message generated by the message generation unit 105 based on the input video signal. The display unit 103 has a function of displaying the synthesized video. The display means 103 is a special display method according to a method for realizing a stereoscopic view (a polarized glasses method, a liquid crystal shutter method, a lenticular lens array method, a parallax barrier method, or the like can be used) for 3D display. Perform 3D display.

  The counting unit 104 counts and counts the time from the point when the decoding / video generation unit 101 starts generating the video for 3D display. Strictly speaking, the purpose is to count the time from the point when the display means 103 starts displaying the 3D display video to the viewer. In this embodiment, however, the display means 103 performs processing by the video composition means 102 and the display means 103. Assuming that there is almost no delay, the time from when the video for 3D display starts to be generated by the decoding / video generation means 101 is counted.

  The time counting by the counting means 104 is preferably the sum of the non-pseudo 3D display time and the pseudo 3D display time. As described above, non-pseudo 3D content is created with the intention of the content creator to show it in 3D. It is conceivable that “3 seconds content” is also applied to 3D content.

  On the other hand, since the pseudo 3D is automatically generated on the reception / playback side, the content production side cannot take into consideration the physical condition of the viewer. Non-pseudo 3D is a broadcasting station (content production side) that considers fatigue when viewing 3D, whereas pseudo 3D is a manufacturer that considers the subject. Even if the manufacturer has taken care of the fatigue at the time of pseudo 3D viewing, it has been limited to providing mild images without adding parallax. Whether 3D or pseudo-3D is relatively tiring is case-by-case, but there is a high possibility that at least tiring susceptibility is different.

Therefore, no consideration has been given to the case of continuing to view the display of pseudo 3D content following non-pseudo 3D content that may be divided in a short time.
Therefore, it is safer for the viewer by counting the time counted by the counting means 104 by the non-pseudo 3D display time and the pseudo 3D display time.

  Furthermore, it is preferable to provide a difference in the upper limit of the counting time between non-pseudo 3D and pseudo 3D. The reason for this can be said to be the same as in the description of the total configuration. Comparing the characteristics of the original 3D content that is not pseudo and the pseudo 3D display, the former is generally expected to have a final quality check on the content production side, while the latter is automatically simulated according to a certain algorithm. Since there is a difference in realizing 3D display, the latter (pseudo 3D) may be more careless about adverse effects on physical condition. With this possibility, it is easy to get tired at least with pseudo 3D and 3D, even if it cannot be said that "pseudo 3D is more tiring because there is no consideration for continuous viewing than 3D". However, there is a high possibility that they are different.

  Therefore, if there is a difference in the upper limit of counting time between non-pseudo 3D and pseudo 3D (for example, the former notifies the message generation means 105 in 30 minutes and the latter notifies in 60 minutes) It is possible to provide a video display device that is safer for the user. Providing a difference in the upper limit of the counting time means changing the weighting of the viewing time between pseudo 3D and 3D. Therefore, according to this configuration, it is possible to appropriately cope with the difference in ease of fatigue.

  When the time counted by the counting unit 104 exceeds the set upper limit of viewing time (counting up), the message generating unit 105 is notified by the counting unit 104 to that effect. When a notification is received, a warning message is generated. Alternatively, the message generating unit 105 may monitor the time counted by the counting unit 104 and generate a warning message when the upper limit of the set viewing time is exceeded. FIG. 3 shows a display example of a warning message.

FIG. 2 shows an operation flow of the above-described embodiment.
In the video display device 100, when 3D display including pseudo 3D is started by the decoding / video generation unit 101 (step S101), the counting unit 104 starts counting the display time (step S102).

  When the predetermined display time that has been counted has elapsed (Yes in step S103), the message generation unit 105 generates an alert message (step S104).

  Next, the video synthesizing unit 102 synthesizes the generated alert message with the 3D video generated from the video signal input by the decode / video generating unit 101 (step S105). The display means 103 displays the synthesized video (step S106).

As a result of the flow shown in FIG. 2, a warning message as shown in FIG. 3 is displayed.
In FIG. 3, the display unit 103 displays a warning dialog 202 superimposed on the 3D video 201 and displays a warning message. Preferably, an input means for inputting the viewer's intention is displayed together with the alert message, and the focus 203 is set so as not to continue the 3D display by default. Select “No” to return to 2D. When “Yes” is selected, 3D display is continued.

  According to the above-described embodiment, it is possible to provide a video display device capable of considering the physical condition of the viewer without impairing the viewer's usability in the video display device that provides stereoscopic viewing.

  In addition, when combining the total viewing time with a configuration that provides a difference in the upper limit of the counting time between the non-pseudo 3D and the pseudo 3D, not only the total viewing time but also the non-pseudo 3D and the pseudo 3D Considering the difference in ease of fatigue.

  Which is more likely to get tired in 3D or pseudo 3D is case-by-case and cannot be generally stated, but the fatigue level accumulated every second is different, so when switching between 3D and pseudo 3D, it is proportional to the degree And time counting appropriately. As an example, there is an embodiment in which the time until message display is set to 60 minutes for 3D and 30 minutes for pseudo-3D. The setting of this example is a setting when it is assumed that pseudo 3D is fatigued twice as fast as 3D.

  In this embodiment, for example, when viewing pseudo 3D for 15 minutes and then switching to 3D viewing continuously, the display time of pseudo 3D that has been viewed so far is the same as when viewing 30 minutes at 3D. It is considered fatigue level and is added to the count time. In other words, this is a configuration in which the pseudo 3D display time is counted and timed with a predetermined weight, and totaled with the non-pseudo 3D display time. If comprised in this way, it can respond appropriately to the difference of the fatigue degree of pseudo | simulation 3D and original 3D.

DESCRIPTION OF SYMBOLS 100 Video display apparatus 101 Decoding / video generation means 102 Video composition means 103 Display means 104 Count means 105 Message generation means 106 User interface

Claims (4)

Display means for displaying stereoscopically viewable images;
Counting means for counting a first time which is a time from the start of displaying a stereoscopically viewable image;
Message generating means for generating a message for calling attention to continue displaying a stereoscopically viewable video when the first time reaches a time corresponding to a preset second time;
With
The display means displays the generated message. A video display device characterized by the above-mentioned.   2. The video display apparatus according to claim 1, wherein the display unit displays an input unit that allows the operator to select whether to continue or cancel the display of a stereoscopically viewable video in conjunction with the message. . Provided with video generation means for generating stereoscopically viewable video,
The first time is
A time when the video generation unit generates the stereoscopically visible video from video signals for the left eye and the right eye; and
A time when the video generation unit generates the stereoscopically viewable video from one video signal;
The video display device according to claim 1, wherein the video display device is obtained by adding up the total. Provided with video generation means for generating stereoscopically viewable video,
The first time is
A time when the video generation unit generates the stereoscopically visible video from video signals for the left eye and the right eye; and
A time measured by adding a predetermined weight to the time when the video generation means generates the stereoscopically viewable video from one video signal;
The video display device according to claim 1, wherein the video display device is obtained by adding up the total.

Images