JP2014174313A - Data regeneration device, integrated circuit, mobile apparatus, data regeneration method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an impact which is given on peripheral visual field characteristics of humans by brightness fluctuation of a moving image signal.SOLUTION: A communication unit 3 acquires data including a moving image through a network 2 such as the Internet. A regeneration unit 4 regenerates the acquired data including a moving image. A blink sensation suppression unit 5 adjusts a frequency of brightness fluctuation so as to reduce an impact which is given on peripheral visual field characteristics of humans by brightness fluctuation of a regenerated moving image signal. For example, a frequency of brightness fluctuation is enhanced, when the brightness fluctuation is equal to or smaller than a threshold value which is set as a value equal to or larger than a critical flicker frequency of the peripheral visual field of humans.

Description

  The present invention relates to a data reproduction apparatus, integrated circuit, mobile device, data, and the like that reduce the visual impact that occurs when an application using digital data acquired from a server on the Internet is executed, particularly when moving image data is reproduced. It relates to a reproduction method.

  In recent years, devices that can be connected to the Internet have become widespread. In the case of broadcasting, the quality of the broadcast content is maintained by a highly public broadcasting station. However, on the Internet, even individuals can easily create and publish content, so a variety of content is overflowing, and the content and quality are diverse.

  Considering such a situation, there is a concern that the in-vehicle devices such as car navigation and car audio will have an influence on the driver, especially while driving a car. For example, a technique is known that adjusts the brightness of the in-vehicle device to the gaze luminance of the driver outside the vehicle so that the driver can quickly adapt to the eyes when the driver moves from the outside of the vehicle to the in-vehicle device (Patent Document 1). .

JP 2012-162126 A

Tadahiko Fukuda, “Sensitivity difference between central vision and peripheral vision as indicated by CFF”, Journal of Television Society 32 (3), pp.210-216, 1978-03-01 Ryoko Fukuda, “Environmental Design for Elderly”, 03rd, pp53, 2005/10 / 14http: //gc.sfc.keio.ac.jp/class/2005_21094/slides/03/index_53.html Haruno Ogino, “Depth and 3D Information”, 3D Image Engineering, 2nd, pp15, 2009 http://leo.nit.ac.jp/~isono/DL/3D/3D_03.pdf Hiroshi Ichikawa, Satoshi Honda, Masakazu Ohashi, "Relationship between VDT work increase due to ICT development and fatigue and stress -Telework and e-learning as an example-", Journal of Information Sociology Vol.1 No.1 2006 ( 64-72) Research Division, Expressway Research Committee, “Driver Awareness and Physical Functions of Senior Drivers on Expressway”, 2012 Research Presentation, 2012http: //www.express-highway.or.jp/jigyo/info/ gijyutsu / 2012 / gijyutsu201202.pdf Rei Takami, "Fundamental Study on Aging and Fatigue of Persons with Disabilities", Chapter 5 Fatigue and Aging, pp59-77, 1993/3

  However, in the above-described control for adjusting the brightness of the vehicle-mounted device to the gaze luminance outside the vehicle, the difference between the brightness of the vehicle-mounted device and the vehicle outside is effective against the adverse effects on human perception characteristics, but the effect of the content playback content Can not respond.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique for reducing the influence of the content reproduction content on the peripheral visual field characteristics of human beings.

  In order to solve the above-described problems, a data reproducing apparatus according to an aspect of the present invention has an effect that a reproduction unit that reproduces data including a moving image and brightness fluctuations of the reproduced moving image signal affect human peripheral visual field characteristics. A blinking perception suppression unit that adjusts the frequency of brightness fluctuations to reduce the brightness.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, and the like are also effective as an aspect of the present invention.

  According to the present invention, there is an effect of reducing the influence of fluctuations in brightness of a moving image signal on the peripheral visual field characteristics of a human.

It is a block diagram which shows the structure of the data reproduction apparatus in Embodiment 1 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 1 of this invention. FIGS. 3A to 3E are diagrams for explaining an example of processing executed in the blinking perception suppression unit included in the data reproduction device according to Embodiment 1 of the present invention. It is a flowchart which shows operation | movement of the data reproduction apparatus in Embodiment 1 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 4 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 8 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 9 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 11 of this invention. It is a block diagram which shows the structure of the data reproduction apparatus in Embodiment 15 of this invention. It is a block diagram which shows the structure of the data reproduction apparatus in Embodiment 16 of this invention. It is a block diagram which shows the structure of the data reproducing device in Embodiment 17 of this invention. It is a block diagram which shows the structure of the data reproducing device in Embodiment 18 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 18 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 18 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 20 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 21 of this invention. It is a block diagram which shows the structure of the blink perception suppression part contained in the data reproduction apparatus in Embodiment 22 of this invention. It is a block diagram which shows the structure of the data reproduction apparatus in Embodiment 23 of this invention. It is a block diagram which shows the structure of the data reproduction apparatus in Embodiment 24 of this invention. It is a block diagram which shows the structure of the data reproducing device in Embodiment 25 of this invention.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a data reproducing apparatus according to Embodiment 1 of the present invention. The data reproduction device 7 includes a communication unit 3, a reproduction unit 4, and a blinking perception suppression unit 5.

  Various contents are stored in the Internet server 1, and by connecting to the network 2, the contents can be transmitted in response to a request from another terminal. The communication unit 3 is also connected to the network 2, and desired data can be acquired by designating data to be acquired to the Internet server 1, and the data is output to the reproduction unit 4.

  The Internet server 1 and the communication unit 3 are connected to the network 2 by, for example, a wireless LAN, a wired LAN, or a mobile phone communication network. This is an example, and it may be connected to the network through another connection method or another communication network. Moreover, both connection methods and communication paths may be different. When the data reproduction device 7 is wirelessly connected to the Internet server 1, an antenna (not shown) and the data reproduction device 7 may be configured as an integrated circuit formed as a single chip.

  The reproduction unit 4 demodulates data input from the communication unit 3 (assuming data including a moving image in this specification) into a moving image signal and outputs it to the presentation unit 6. Further, a certain amount of data input from the communication unit 3 is held, demodulated into moving image signals, and signals for a certain period of time are collectively output to the blinking perception suppression unit 5. The above-mentioned fixed time is a length sufficient to measure the critical flicker frequency of the peripheral visual field and the central visual field, which will be described later. For example, a moving image signal having a length of one period or more of the critical flicker frequency of the peripheral visual field or the central visual field is output to the blinking perception suppressing unit 5. As long as the above conditions are satisfied, the time length may always be changed or changed. The critical flicker frequency is a limit frequency at which a person can perceive flicker visually. When the frequency becomes higher than this frequency, the person always perceives lighting (see Non-Patent Document 1 above). The above processing is merely an example, and a certain amount of demodulated moving image signals may be held and collectively output to the blinking perception suppression unit 5.

  The blinking perception suppression unit 5 first calculates the brightness of the moving image signal output from the playback unit 4 for a certain period of time and measures the temporal variation thereof. Next, if the time variation is below the critical flicker frequency in the human peripheral visual field characteristics, the lightness variation is generated. Specifically, the brightness fluctuation frequency (frequency) is adjusted to exceed the critical flicker frequency.

  For a more detailed description, a detailed block diagram of the blinking perception suppression unit 5 is shown in FIG. The blinking perception suppression unit 5 includes a brightness calculation unit 8, a variation measurement unit 9, a visual field characteristic data unit 10, and a light emitting unit 11. These can be realized in hardware by an arbitrary processor (for example, DSP or microcomputer), memory, or other LSI, and in software, it is realized by a program loaded in the memory. Describes functional blocks realized through collaboration. Therefore, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.

The moving image signal input from the reproduction unit 4 is input to the brightness calculation unit 8. Hereinafter, FIG.
)-(E) shows an actual processing example. The brightness calculation unit 8 adds the brightness of each pixel of the still image at each time to the moving image signal of a certain time input from the reproduction unit 4. The brightness of the screen at each accumulated time is calculated and output to the fluctuation measuring unit 9. Assuming that the moving image signal is horizontal M pixels × vertical N pixels, when each pixel value is expressed by the RGB color model, the brightness B (t) of the entire screen at a certain time t described above is expressed by the following (formula 1). Defined in

R _{i, j} = Red of the horizontal i-th pixel and vertical j-th pixel
G _{i, j} = Green of the horizontal i pixel and vertical j pixel
R _{i, j} = Blue of the horizontal i pixel and vertical j pixel

  The lightness defined by the above (Expression 1) is an example, and other color spaces such as lightness in HSV and luminance in HLS may be used. It is also possible to calculate by dividing the entire screen into small sections, integrating only sections where the fluctuation is greater than a certain value, and normalizing the integrated value with the number of pixels targeted for integration. This method can be realized with a smaller amount of calculation than the entire screen as an integration target, and at the same time, since the pixels unrelated to the brightness fluctuation are not integrated, the error included in the calculation result can be further reduced.

  As shown in FIG. 3A, when a signal whose brightness changes continuously is input to the brightness calculation unit 8, an input moving image signal as shown in FIG. Lightness information at each time synchronized with is output to the fluctuation measuring unit 9.

  The fluctuation measuring unit 9 measures how much the lightness of each time inputted from the lightness calculating part 8 is fluctuating, and outputs it to the light emitting part 11. Specifically, the portion where the input lightness becomes the maximum value or the minimum value is calculated by normalizing with the time length of the input lightness information. Since this method does not require conversion to a frequency space, it can be realized with a smaller amount of calculation. This process is an example, and if the brightness fluctuation is not as steep as a pulse, it can be realized by performing FFT (Fast Fourier Transform) and outputting a frequency having a peak frequency component.

  When the variation measurement process is executed on the brightness information in FIG. 3B, a frequency (fb) as shown in FIG. 3C is obtained and output to the light emitting unit 11.

  The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, critical flicker frequency information (hereinafter referred to as peripheral visual field critical flicker frequency) in the human peripheral visual field is held and referred to by the light emitting unit 11. When the frequency of the brightness variation input from the variation measuring unit 9 is smaller than the peripheral visual field critical flicker frequency held in the visual field characteristic data unit 10, the light emitting unit 11 actively watches the content. The brightness fluctuation is output to a person who views unintentionally in the peripheral vision (hereinafter referred to as an involuntary viewer). At this time, when the brightness variation input from the variation measuring unit 9 is added to the brightness variation of the moving image presented by the presentation unit 6, it is larger than the peripheral visual field critical flicker frequency acquired from the visual field characteristic data unit 10. Outputs such brightness fluctuations.

  When the light emission process is performed on the moving image motion information as shown in FIG. 3A having the brightness variation as shown in FIG. 3B, the brightness variation having the brightness variation component as shown in FIG. 3D is presented. The By installing the light emitting unit 11 at a sufficiently close distance from the presentation unit 6, the viewer can perceive brightness variations of both the presentation unit 6 and the light emitting unit 11 from substantially the same direction. As a result, the brightness variation as shown in FIG. For this reason, the brightness variation becomes larger than when only the moving image presentation from the presentation unit 6 is viewed. At this time, the brightness fluctuation in FIG. 3 (e) exceeds the above-mentioned peripheral visual field critical flicker frequency, and thus is not perceived as blinking but perceived as always on. At this time, it is desirable that the brightness variation output from the light emitting unit 11 is asynchronous with the brightness variation of the moving image information presented by the presentation unit 6. The presentation unit 6 displays the moving image signal output from the reproduction unit 4 on a monitor and presents it to the viewer.

  By adopting such a configuration, when content that includes rapid brightness fluctuations such as flashing flashes is played, involuntary viewers, for example, drivers of cars, trains, ships, aviation, etc. Therefore, the stimulus given by the installed information device can be reduced. As a result, the driver's and pilot's attention is not diverted, and the driver / operator can be operated with more peace of mind, and at the same time, accidents and near-miss conditions can be prevented.

  In addition, by limiting the direction in which the lightness variation of the light emitting unit 11 is output to involuntary viewers, it is possible to achieve without disturbing the passengers' viewing. Specifically, it can be realized by limiting the attachment position and direction or using light having high directivity, but any method that can achieve the same effect may be used.

  Next, the overall operation of the data reproducing apparatus 7 will be described with reference to the flowchart of FIG. The communication unit 3 acquires data to be reproduced from the Internet server 1 through the network 2 (step S01), and outputs the data to the reproduction unit 4. The reproduction unit 4 reproduces the acquired data (step S02), and outputs it to the blinking perception suppression unit 5, more specifically, to the brightness calculation unit 8 and the presentation unit 6.

  The lightness calculation unit 8 calculates the lightness of the still image at each time with respect to the moving image signal of a certain time input from the reproduction unit 4 (step S03), and outputs it to the fluctuation measurement unit 9. The fluctuation measuring unit 9 measures how much the lightness of each time inputted from the lightness calculating part 8 is fluctuating (step S04), and outputs it to the light emitting part 11.

  The light emitting unit 11 performs a light emission process on the frequency regarding the brightness variation input from the variation measuring unit 9 (step S05). Specifically, when the frequency of the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the peripheral visual field critical flicker frequency held in the visual field characteristic data unit 10, the light emitting unit 11 makes the involuntary viewer. In contrast, light is output. The light that is output at this time outputs light that includes a brightness fluctuation that is greater than the peripheral visual field critical flicker frequency acquired from the visual field characteristic data section 10 when added to the brightness fluctuation input from the fluctuation measuring section 9. To do. The presentation unit 6 displays the moving image signal input from the reproduction unit 4 on the monitor and presents it to the viewer (step S06). Thus, the entire process is completed.

  By performing such processing, when playing content that includes sudden brightness fluctuations such as intense flashing, for involuntary viewers, such as car drivers and operators such as trains, ships, and aircraft, The stimulus given by the installed information equipment can be reduced. As a result, the driver's and pilot's attention is not diverted, and the driver / operator can be operated with more peace of mind, and at the same time, accidents and near-miss conditions can be prevented.

(Embodiment 2)
The block diagram showing the configuration of the data reproducing apparatus according to the second embodiment of the present invention is the same as FIG. 1 and FIG. 2 that are block diagrams of the first embodiment, but in the visual field characteristic data section 10 and the light emitting section 11. Processing is different. The description of the same parts as those in Embodiment 1 is omitted.

  The visual field characteristic data unit 10 holds human visual field characteristic information. Specifically, it holds the peripheral visual field critical flicker frequency and the critical flicker frequency in the human central visual field (hereinafter referred to as the central visual field critical flicker frequency) and is referred to from the light emitting unit 11.

  Any frequency that is equal to or higher than the peripheral visual critical flicker frequency and is equal to or lower than the central visual critical flicker frequency held in the visual field characteristic data unit 10 is set as a threshold value. When the frequency of the brightness fluctuation input from the fluctuation measuring unit 9 is equal to or less than the threshold, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness fluctuation output at this time is the peripheral obtained from the visual field characteristic data section 10 when the brightness fluctuation input from the fluctuation measuring section 9 is added to the brightness fluctuation of the moving image presented by the presentation section 6. Outputs brightness fluctuations that are greater than the visual field critical flicker frequency. It is generally known that the peripheral visual critical flicker frequency is lower than the central visual critical flicker frequency (see Non-Patent Document 1 above).

  By adopting such a configuration, it is perceived that the peripheral visual field is always lit, but unnecessary suppression processing can be omitted for moving image information including brightness fluctuations that are perceived as blinking in the central visual field. In addition, there is an effect that a passenger who wants to actively view the presented information can continue viewing.

(Embodiment 3)
The block diagram showing the configuration of the data reproducing apparatus according to the third embodiment of the present invention is the same as FIG. 1 and FIG. 2 that are the block diagrams of the first embodiment, but the lightness calculating unit 8, the variation measuring unit 9, The processing in the visual field characteristic data unit 10 and the light emitting unit 11 is different. The description of the same parts as those in Embodiment 1 is omitted.

  The brightness calculation unit 8 performs the same processing as that of the first embodiment on the moving image signal of a certain time input from the reproduction unit 4, and measures variation of the brightness information at each time synchronized with the input moving image signal. To the unit 9. Further, the lightness calculation unit 8 outputs region information indicating which pixel is used when calculating the lightness information to the fluctuation measurement unit 9.

  The fluctuation measuring unit 9 performs the same processing as that of the first embodiment on the brightness for each time input from the brightness calculation unit 8 and outputs frequency information to the light emitting unit 11. The variation measuring unit 9 converts the area information for each time input from the lightness calculating unit 8 into angle information occupying the viewing angle, and outputs the angle information to the light emitting unit 11. For example, considering a case where a driver of a car driver, train, ship, aviation, etc., unintentionally views in the peripheral vision, the direction of the line of sight of the target person driving, the position of the data reproducing device 7, Directional relationship is fixed. By storing the positional and directional relationship in advance, it is possible to convert the above-described region information into angle information occupying the viewing angle.

  The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequency information is held according to the angle occupied by the predetermined blinking index in the visual field, and is referred to from the light emitting unit 11. In general, it is known that the critical flicker frequency increases as the size of the blinking object increases, that is, as the range occupied by the viewing angle increases (see Non-Patent Document 1 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, the size of the blinking area in the moving image input from the reproduction unit 4 based on the angle information occupying the viewing angle input from the variation measuring unit 9. Peripheral visual field critical flicker frequency can be acquired. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  The information held in the visual field characteristic data unit 10 is angle information. However, this is an example, and the information is not limited to angle information as long as it is an index indicating the range occupied by the visual field angle. For example, the length, circumference, area, solid angle, etc. of the blinking area may be used.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing due to the influence of the size of the blinking area, and to reduce the influence on the involuntary viewer.

(Embodiment 4)
The block diagram showing the configuration of the data reproducing apparatus according to the fourth embodiment of the present invention is the same as FIG. 1 that is the block diagram of the first embodiment, but the internal configuration of the blinking perception suppression unit 5 is different. FIG. 5 is a block diagram showing the configuration of the blinking perception suppression unit of the data reproduction apparatus according to Embodiment 4 of the present invention. Hereinafter, description of the same parts as those in the first embodiment will be omitted.

  The blinking perception suppression unit 5 in FIG. 5 includes a use environment data unit 14 in addition to the configuration in FIG. The usage environment data unit 14 holds a display size used when the moving image data is presented by the presentation unit 6 and is referred to by the light emitting unit 11. The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequencies are held according to the display size, and are referred to from the light emitting unit 11. In general, it is known that the critical flicker frequency increases as the size of the blinking object increases, that is, as the range occupied by the viewing angle increases (see Non-Patent Document 1 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, the peripheral visual field critical flicker frequency considering the display size of the presentation unit 6 based on the display size information input from the use environment data unit 14. Can be obtained. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  The information stored in the use environment data unit 14 is the display size, but this is an example, and the display size is not limited as long as it is an index indicating the range of the viewing angle. For example, the length, circumference, area, and solid angle of the display may be used.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing due to the influence of the size of the blinking area due to the display size, and to reduce the influence on the involuntary viewer.

(Embodiment 5)
The block diagram showing the configuration of the data reproducing apparatus according to the fifth embodiment of the present invention is the same as FIG. 5 which is the block diagram of the fourth embodiment, but the visual field characteristic data section 10, the light emitting section 11, and the usage environment data. The processing in the unit 14 is different.

  The usage environment data unit 14 holds the age of a person who wants to exert the effect of the processing according to the present embodiment, and is referred to by the light emitting unit 11. The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequencies are held according to the age of the person and are referred to from the light emitting unit 11. In general, it is known that the critical flicker frequency increases as the human age increases (see Non-Patent Document 2 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, based on the age information input from the use environment data unit 14, the light emitting unit 11 determines the age of a person who is desired to exert the processing effect according to the present embodiment. Taking into account peripheral vision critical flicker frequency. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the fourth embodiment.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing due to the age of the human and reduce the influence on the involuntary viewer.

(Embodiment 6)
The block diagram showing the configuration of the data reproducing apparatus according to the sixth embodiment of the present invention is the same as FIG. 5 that is the block diagram of the fourth embodiment, but the visual field characteristic data section 10, the light emitting section 11, and the usage environment data. The processing in the unit 14 is different.

  The use environment data unit 14 holds information on whether a human being who wants to exert the processing effect according to the present embodiment is viewing with a single eye or with both eyes, and is referred to by the light emitting unit 11. The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequencies are held depending on whether they are viewed with a single eye or with both eyes, and are referred to from the light emitting unit 11. Further, it is generally known that the critical flicker frequency with a single eye is higher than the critical flicker frequency with both eyes (see Non-Patent Document 3 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, based on the monocular / binocular information input from the use environment data unit 14, the light emitting unit 11 is a target person who wants to exert the processing effect according to the present embodiment. Peripheral visual field critical flicker frequency can be acquired in consideration of whether the image is viewed with a single eye or with both eyes. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the fourth embodiment.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing due to the difference between the case where the human visual recognition state is monocular and binocular, and the influence on the involuntary viewer can be reduced.

(Embodiment 7)
The block diagram showing the configuration of the data reproducing apparatus according to the seventh embodiment of the present invention is the same as FIG. 1 and FIG. 2 which are the block diagrams of the first embodiment, but the fluctuation measuring unit 9 and the visual field characteristic data unit 10. The processing in the light emitting unit 11 is different. The description of the same parts as those in Embodiment 1 is omitted.

  The fluctuation measuring unit 9 performs the same processing as that of the first embodiment on the brightness for each time input from the brightness calculation unit 8 and outputs frequency information to the light emitting unit 11. Further, the variation measuring unit 9 outputs the lightness information input from the lightness calculating unit 8 to the light emitting unit 11 as it is.

  The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequencies are held according to the brightness of the blinking target, and are referred to from the light emitting unit 11. In general, it is known that the higher the brightness of a blinking object, the higher the critical flicker frequency (see Non-Patent Document 1 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, the peripheral visual field critical flicker frequency considering the lightness of the moving image input from the reproduction unit 4 based on the lightness information input from the variation measuring unit 9. Can be obtained. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing due to brightness, and to reduce the influence on the involuntary viewer.

(Embodiment 8)
The block diagram showing the configuration of the data reproducing apparatus according to the eighth embodiment of the present invention is the same as FIG. 1 which is the block diagram of the first embodiment, but the internal configuration of the blinking perception suppression unit 5 is different. FIG. 6 is a block diagram showing the configuration of the blinking perception suppression unit of the data reproduction apparatus according to Embodiment 8 of the present invention. Hereinafter, description of the same parts as those in the first embodiment will be omitted.

  The blinking perception suppression unit 5 in FIG. 6 includes a fatigue detection unit 15 in addition to the configuration in FIG. The fatigue detection unit 15 detects the degree of fatigue of the involuntary viewer that is the object of processing according to the present embodiment, and outputs the magnitude to the light emitting unit 11. Specifically, the continuous activation time that is considered to have a correlation with the operation time of the data reproducing device 7 is measured. The continuous activation time is an example, and is not limited to the continuous activation time as long as the degree of fatigue of the subject can be measured directly or indirectly. For example, a physiological index such as a pulse may be directly measured, or a time during which the vehicle speed is equal to or greater than a certain threshold may be integrated and used as an index of the degree of fatigue.

  The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequency information is held according to the degree of human fatigue, and is referred to from the light emitting unit 11. Further, it is generally known that the greater the fatigue, the lower the critical flicker frequency (see Non-Patent Document 4 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, the light emitting unit 11 can acquire the peripheral visual field critical flicker frequency in consideration of the fatigue level based on the fatigue level information input from the fatigue detection unit 15. When the frequency regarding the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing due to the degree of fatigue, and to reduce the influence on involuntary viewers.

(Embodiment 9)
The block diagram showing the configuration of the data reproducing apparatus according to the ninth embodiment of the present invention is the same as FIG. 1 which is the block diagram of the first embodiment, but the internal configuration of the blinking perception suppression unit 5 is different. FIG. 7 is a block diagram showing the configuration of the blinking perception suppression unit of the data reproduction apparatus according to Embodiment 9 of the present invention. Hereinafter, description of the same parts as those in the first embodiment will be omitted.

  The blinking perception suppression unit 5 of FIG. 7 includes a use environment data unit 14 and a fatigue detection unit 15 in addition to the configuration of FIG. The usage environment data unit 14 holds the age of a person who wants to exert the effect of the processing according to the present embodiment, and is referred to by the light emitting unit 11.

  The fatigue detection unit 15 detects the degree of fatigue of the involuntary viewer that is the object of processing according to the present embodiment, and outputs the magnitude to the light emitting unit 11. Specifically, the continuous activation time that is considered to have a correlation with the operation time of the data reproducing device 7 is measured. The continuous activation time is an example, and is not limited to the continuous activation time as long as the degree of fatigue of the subject can be measured directly or indirectly. For example, a physiological index such as a pulse may be directly measured, or a time during which the vehicle speed is equal to or greater than a certain threshold may be integrated and used as an index of the degree of fatigue.

  The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequencies are held according to the degree of human fatigue and age, and are referred to from the light emitting unit 11. In general, it is known that when an elderly person is fatigued, the critical flicker frequency is significantly reduced as compared with a young person (see Non-Patent Document 5 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, the light emitting unit 11 is based on the age information input from the use environment data unit 14 and the fatigue level information input from the fatigue detection unit 15. Peripheral visual field critical flicker frequency can be obtained considering the effect of the degree of fatigue. That is, when the subject's age is higher, a frequency at which the degree of decrease in the critical flicker frequency is greater after the fatigue level is increased than before the increase is obtained. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  By adopting such a configuration, it is possible to reduce the erroneous determination of the light emission processing due to the age of the person when the subject is fatigued, and to reduce the influence on the involuntary viewer.

(Embodiment 10)
The block diagram showing the configuration of the data reproducing apparatus according to the tenth embodiment of the present invention is the same as FIG. 7 which is the block diagram of the ninth embodiment, but the processing in the light emitting unit 11 is different. The description of the same parts as those in Embodiment 9 is omitted.

  The usage environment data unit 14 holds the age of a person who wants to exert the effect of the processing according to the present embodiment, and is referred to by the light emitting unit 11. The fatigue detection unit 15 detects the degree of fatigue of the involuntary viewer that is the target of the processing according to the present embodiment, and outputs the magnitude to the light emitting unit 11. Specifically, the continuous start time and continuous stop time of the data reproducing apparatus 7 that is considered to have a correlation with the operation time are measured. Further, the time when the vehicle speed is equal to or higher than a certain threshold and the time when the vehicle speed is equal to or lower than a certain threshold may be integrated to provide an index of the degree of fatigue. However, unlike Embodiment 9, it is assumed that the degree of fatigue such as a physiological index cannot be directly measured.

  The visual field characteristic data unit 10 holds human peripheral visual field characteristic information. Specifically, a plurality of peripheral visual field critical flicker frequencies are held according to the degree of human fatigue and age, and are referred to from the light emitting unit 11. In general, it is known that when an elderly person gets tired, recovery of fatigue is delayed as compared with a young person (see Non-Patent Document 6 above).

  When the light emitting unit 11 refers to the visual field characteristic data unit 10, the light emitting unit 11 is fatigued according to the age of the subject based on the age information input from the use environment data unit 14 and the fatigue level information input from the fatigue detection unit 15. Peripheral visual field critical flicker frequency can be acquired with the effect of degree. Hereinafter, a case will be considered in which, after information with increased fatigue is acquired from the fatigue detection unit 15, information with reduced fatigue is acquired. Specifically, it refers to a case where the data reproducing device 7 is in a stopped state or a case where the vehicle speed is zero.

  The light emitting unit 11 determines that the fatigue has been recovered when the state in which the fatigue is reduced is input from the use environment data unit 14 for a certain period of time, and the peripheral visual field critical flicker when the fatigue is low is determined from the visual field characteristic data unit 10. Get the frequency. At this time, when the age information input from the use environment data unit 14 is higher than when the age information is low, it is determined that the fatigue has been recovered by continuing the state in which the fatigue is further reduced for a long time.

  When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  By adopting such a configuration, when the subject recovers from the time of fatigue, the erroneous determination of the light emission processing due to the age of the human can be reduced, and the influence on the involuntary viewer can be reduced. Moreover, since the fatigue detection part 15 can operate | move only with an indirect parameter | index, the apparatus for measuring a physiological index becomes unnecessary.

(Embodiment 11)
The block diagram showing the configuration of the data reproducing apparatus according to the eleventh embodiment of the present invention is the same as FIG. 1 which is the block diagram of the first embodiment, but the internal configuration of the blinking perception suppression unit 5 is different. FIG. 8 is a block diagram showing the configuration of the blinking perception suppression unit of the data reproduction apparatus according to Embodiment 11 of the present invention. Hereinafter, description of the same parts as those in the first embodiment will be omitted.

  The blinking perception suppression unit 5 in FIG. 8 includes a viewing environment detection unit 16 in addition to the configuration in FIG. The viewing environment detection unit 16 detects in what detailed situation the involuntary viewer that is the target of the processing according to the present embodiment visually captures the moving image information. Specifically, the line-of-sight direction of the subject is detected, and the direction information is output to the light emitting unit 11. For example, the method described in Patent Document 1 can be used as the method for detecting the line-of-sight direction. This method is an example, and the detection of the line-of-sight direction is not limited to the above technique, and any other known technique can be used. In general, it is known that there is a blind spot where an object cannot be seen due to the structure of eyes in human vision (see Non-Patent Document 1 above).

  The light emitting unit 11 performs a light emission process when it is determined that the presentation information in the presentation unit 6 is not included in the blind spot based on the line-of-sight information acquired from the viewing environment detection unit 16. Specifically, when the frequency of the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the critical flicker frequency acquired from the visual field characteristic data unit 10, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. To do. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  When it is determined that the presentation information in the presentation unit 6 is in a blind spot based on the line-of-sight information acquired from the viewing environment detection unit 16, the light-emitting unit 11 does not output the brightness variation. Judgment whether it is in the blind spot can be performed by the following method. For example, considering a case where a driver of a car driver, a train, a ship, an airline, etc. watches unintentionally in the peripheral vision, the viewpoint of the target person driving, the position of the data reproducing device 7 and Directional relationship is fixed. The position and direction relationship is stored in advance. By comparing such information with the line-of-sight information acquired from the viewing environment detection unit 16, it is possible to calculate at which angle of the visual field the moving image information is captured.

  By adopting such a configuration, it is possible to avoid unnecessary light emission processing when the subject's blind spot has a blinking region, and an effect that a passenger who wants to actively watch the presentation information can continue watching can get.

(Embodiment 12)
The block diagram showing the configuration of the data reproducing apparatus according to the twelfth embodiment of the present invention is the same as FIG. 8 which is the block diagram of the eleventh embodiment, but the processes of the visual field characteristic data section 10 and the light emitting section 11 are different. . Description of the same parts as those in Embodiment 11 is omitted.

  The visual field characteristic data unit 10 holds human visual field characteristic information. Specifically, the critical flicker frequency corresponding to each viewing angle is held for a range including the entire viewing angle of the person from the central visual field to the peripheral visual field, and is referred to by the light emitting unit 11.

  Based on the line-of-sight information input from the viewing environment detection unit 16, the light emitting unit 11 calculates in which direction of the visual field the moving image information is captured by the same method as in the eleventh embodiment. Based on the direction, the peripheral visual field critical flicker frequency for a specific visual field angle can be acquired from the visual field characteristic data unit 10. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing caused by the direction in the field of view where the subject captures the moving image, and to reduce the influence on the involuntary viewer.

(Embodiment 13)
The block diagram showing the configuration of the data reproducing apparatus according to the thirteenth embodiment of the present invention is the same as FIG. 8 which is the block diagram of the eleventh embodiment, but the processes of the viewing environment detecting unit 16 and the light emitting unit 11 are different. . Description of the same parts as those in Embodiment 11 is omitted.

  The viewing environment detection unit 16 detects in what detailed situation the involuntary viewer that is the target of the processing according to the present embodiment visually captures the moving image information. Specifically, the seat position of the subject person is measured, and the viewing angle corresponding to the seat position is output to the light emitting unit 11.

  For example, considering a case where a driver of a car driver, train, ship, aviation, etc. views unintentionally in the peripheral vision, the position of the presentation unit 6 with respect to the vehicle body is constant, and the target Located in front of the person. Even if the seat is moved back and forth, the subject does not change from the peripheral vision, but if the subject's seat is more forward, the presentation unit 6 will be seen at a viewing angle that is further away from the central vision. . If the seat is further rearward, the presentation unit 6 is captured at a viewing angle closer to the central visual field. The viewing environment detection unit 16 outputs this viewing angle to the light emitting unit 11. In general, it is known that the critical flicker frequency in the peripheral visual field is lower than the critical flicker frequency in the central visual field (see Non-Patent Document 1 above).

  The light emitting unit 11 acquires the corresponding human peripheral visual field critical flicker frequency from the visual field characteristic data unit 10 based on the visual field angle information input from the viewing environment detection unit 16. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  By adopting such a configuration, the line-of-sight detection as described in Embodiment 12 is not necessary, and a simpler and lower-cost configuration makes it possible to correct an error in the light emission process due to the direction in the field of view in which the subject captures a moving image. Judgment can be reduced. As a result, the influence on involuntary viewers can be reduced.

(Embodiment 14)
The block diagram showing the configuration of the data reproducing apparatus according to the fourteenth embodiment of the present invention is the same as FIG. 8 which is the block diagram of the eleventh embodiment, but the viewing environment detecting unit 16, the visual field characteristic data unit 10 and the light emission. The processing of the unit 11 is different. Description of the same parts as those in Embodiment 11 is omitted.

  The viewing environment detection unit 16 detects in what detailed situation the involuntary viewer that is the target of the processing according to the present embodiment visually captures the moving image information. Specifically, the line-of-sight direction of the subject is detected, and the direction information is output to the light emitting unit 11. The line-of-sight direction is accurate enough to reflect fluctuations caused by eye movements. As a specific method for detecting the line-of-sight direction, for example, the method described in Patent Document 1 can be used. This is merely an example, and the detection of the line-of-sight direction need not be limited to the above-described technique, and any other known technique can be used as long as it has an accuracy sufficient to reflect fluctuations caused by eye movements. In general, it is known as a human visual characteristic that when eye movement occurs, the critical flicker frequency increases, and as the frequency and amplitude of the eye movement increase, the critical flicker frequency increases more (the above-mentioned non-flicker frequency). Patent Document 1).

  The visual field characteristic data unit 10 holds human visual field characteristic information. Specifically, it holds critical flicker frequencies corresponding to each viewing angle, eye movement amplitude and frequency for a range that encompasses the entire viewing angle of the human, from the human central visual field to the peripheral visual field. 11 for reference.

  The light emitting unit 11 calculates the amplitude and frequency based on the time series of the line-of-sight information input from the viewing environment detection unit 16. Based on the amplitude and frequency, the peripheral visual field critical flicker frequency corresponding to the specific visual field angle and the amplitude and frequency of the eye movement can be acquired from the visual field characteristic data unit 10. When the frequency for the brightness fluctuation input from the fluctuation measuring unit 9 is smaller than the acquired frequency, the light emitting unit 11 outputs the brightness fluctuation to the involuntary viewer. The brightness variation output at this time is determined by the same processing as in the first embodiment.

  The above-described amplitude and frequency are examples of fluctuation indices. If fluctuations in eye movements can be acquired, even if the parameters are in an arbitrary coordinate system, the fluctuation indices calculated therefrom are indices other than amplitude and frequency. There may be.

  By adopting such a configuration, it is possible to reduce misjudgment of the light emission processing caused by the eye movement of the subject person, and to reduce the influence on the involuntary viewer. In particular, since the driver of a car driver or a train, ship, aviation operator, etc. constantly pays attention if the line of sight is moved, the effect of this embodiment can be greatly obtained.

(Embodiment 15)
FIG. 9 is a block diagram showing a configuration of a data reproducing apparatus according to Embodiment 15 of the present invention. In Embodiment 1 shown in FIG. 1, all of the detection and light emission processing of moving image information including brightness fluctuations are performed in the blinking perception suppression unit 5. In the fifteenth embodiment, part or all of the processing is executed by the server. Description of the same parts as those in Embodiment 11 is omitted.

  Specifically, the data processing server 12 is also connected to the network 2 in the same manner as the Internet server 1 and the data reproducing device 7 and can communicate with each other. The communication unit 3 specifies to the data processing server 12 the Internet server 1 where the data to be acquired exists and the data to be acquired.

  The data processing server 12 acquires data designated by the communication unit 3 from the Internet server 1 requested by the communication unit 3. A part or all of the processing executed in the reproduction unit 4 and the blinking perception suppression unit 5 of the first embodiment is executed on the acquired data, and the processing result and the acquired data are output to the communication unit 3 as they are. To do.

  By adopting such a configuration, the data reproducing device 7 uses both a method of directly acquiring data from the Internet server 1 and a method of acquiring data via the data processing server 12 without changing the internal configuration. It becomes possible to do. Furthermore, the amount of processing executed by the data reproducing apparatus 7 can be reduced, and the necessary hardware resources such as the microcomputer, CPU, and memory to be mounted can be reduced. Therefore, the cost of the data reproducing device 7 can be reduced and the power consumption can be reduced.

  Further, when switching from the currently reproduced content to another content, the data processing server 12 obtains a content to be reproduced next while maintaining the situation where the currently reproduced content is being processed by the data reproducing device 7. Can be issued. Therefore, the process executed by the blinking perception suppression unit 5 can be switched to the next content without a time lag.

  The fifteenth embodiment based on the configuration and processing of the blinking perception suppression unit 5 of the first embodiment is an example, and the configuration and processing of the blinking perception suppression unit 5 is not the first embodiment, but the embodiment 4-14. Any of these may be sufficient.

(Embodiment 16)
FIG. 10 is a block diagram showing a configuration of a data reproducing apparatus according to Embodiment 16 of the present invention. In the fifteenth embodiment shown in FIG. 9, part or all of the processing is executed by the data processing server 12 connected to the network 2. In the sixteenth embodiment, the processing in the data processing server 12 is processed by the external terminal 13 directly connected to the data reproducing device 7. Description of the same parts as those in the fifteenth embodiment is omitted.

  Specifically, the external terminal 13 is directly connected to the data reproducing device 7 and can communicate. For example, examples of the external terminal 13 include a feature phone, a smartphone, a tablet terminal, and a PC. These are merely examples, and other devices may be used as long as they can communicate with the data reproducing device 7 and can execute a part of the processing.

  The communication unit 3 designates the Internet server 1 in which the data to be acquired exists and the data to be acquired to the external terminal 13. The external terminal 13 executes part or all of the processing executed in the blinking perception suppression unit 5 in the first embodiment through the communication unit 3 by the same method as in the fifteenth embodiment.

  By adopting such a configuration, it is possible to reduce the amount of processing executed by the data reproducing apparatus 7 and to reduce necessary hardware resources such as a microcomputer, a CPU, and a memory to be mounted. Therefore, the cost of the data reproducing device 7 can be reduced and the power consumption can be reduced. Further, when switching from the currently reproduced content to another content, the external terminal 13 is requested to acquire the content to be reproduced next while maintaining the situation where the currently reproduced content is being processed by the data reproducing device 7. Can be put out. Therefore, the process executed by the blinking perception suppression unit 5 can be switched to the next content without a time lag.

  Furthermore, since the data processing server 12 performs processing in the fifteenth embodiment, the speed decreases when a large number of users request similar processing, but in the sixteenth embodiment, this can be avoided. Further, when the data processing server 12 is under maintenance or when the corresponding service is down due to some problem or the server itself is down, it cannot be executed in the fifteenth embodiment, but can be executed in the sixteenth embodiment.

  The external terminal 13 may be directly connected to the network 2 in addition to the connection with the communication unit 3. Since the communication speed is improved as compared with the case where the communication unit 3 is shared, the above-described data acquisition is easy even for high-definition data with a large capacity.

  The sixteenth embodiment based on the configuration and processing of the blinking perception suppression unit 5 of the first embodiment is an example, and the configuration and processing of the blinking perception suppression unit 5 is not the first embodiment, but the embodiment 4-14. Any of these may be sufficient.

(Embodiment 17)
FIG. 11 is a block diagram showing a configuration of a data reproducing apparatus according to Embodiment 17 of the present invention. In the sixteenth embodiment shown in FIG. 10, the data reproducing device 7 is directly connected to the network 2, but in this embodiment, it is not directly connected, but indirectly connected through the external terminal 13 that can be connected to the network 2. The description of the same parts as those in Embodiment 16 is omitted.

  Specifically, the external terminal 13 is directly connected to the data reproducing device 7 and can communicate. For example, examples of the external terminal 13 include a feature phone, a smartphone, a tablet terminal, and a PC. These are merely examples, and other devices may be used as long as they can communicate with the data reproducing device 7 and can execute a part of the processing. The communication unit 3 specifies the content to be acquired with respect to the external terminal 13. The external terminal 13 outputs the acquired content to the data reproduction device 7 according to the instruction.

  By adopting such a configuration, the data reproducing apparatus 7 can execute a series of processes without having a system connected to the network itself, so that necessary hardware resources such as an installed microcomputer, CPU, and memory can be reduced. . Therefore, the cost of the data reproducing device 7 can be reduced and the power consumption can be reduced.

  The seventeenth embodiment based on the configuration and processing of the blinking perception suppression unit 5 of the first embodiment is an example, and the configuration and processing of the blinking perception suppression unit 5 is not the first embodiment, but the embodiment 4-14. Any of these may be sufficient.

(Embodiment 18)
12 and 13 are block diagrams showing the configuration of the data reproducing apparatus according to the eighteenth embodiment of the present invention. Unlike the first to third and seventh embodiments, the blinking perception suppressing unit 5 exists independently of the data reproducing device 7 and includes an environment observation unit 17 in addition to the configuration of the first embodiment. The description of the same parts as those in Embodiment 1 is omitted.

  The environment observation unit 17 is an image sensor, and changes in brightness included in the moving image data, directly or indirectly by capturing reflected, refracted, diffracted and scattered light from the moving image signal displayed on the presentation unit 6. Information is observed and output to the brightness calculation unit 8. The operations of the brightness calculation unit 8, the variation measurement unit 9, the visual field characteristic data unit 10, and the light emitting unit 11 are the same as those in the first embodiment.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 19)
FIG. 14 is a block diagram showing the configuration of the data reproducing apparatus according to the nineteenth embodiment of the present invention. In addition to the configuration of the embodiment 4-6, an environment observation unit 17 is provided. Description of the same parts as those in Embodiment 4 is omitted.

  The environment observation unit 17 is an image sensor, and changes in brightness included in the moving image data, directly or indirectly by capturing reflected, refracted, diffracted and scattered light from the moving image signal displayed on the presentation unit 6. Information is observed and output to the brightness calculation unit 8.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 20)
FIG. 15 is a block diagram showing the configuration of the data reproducing apparatus according to the twentieth embodiment of the present invention. In addition to the configuration of the eighth embodiment, an environment observation unit 17 is provided. Description of the same parts as those in the eighth embodiment is omitted.

  The environment observation unit 17 is an image sensor, and changes in brightness included in the moving image data, directly or indirectly by capturing reflected, refracted, diffracted and scattered light from the moving image signal displayed on the presentation unit 6. Information is observed and output to the brightness calculation unit 8.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 21)
FIG. 16 is a block diagram showing the configuration of the data reproduction apparatus according to Embodiment 21 of the present invention. In addition to the configurations of the ninth and tenth embodiments, an environment observation unit 17 is provided. The description of the same parts as those in Embodiment 9 is omitted.

  The environment observation unit 17 is an image sensor, and changes in brightness included in the moving image data, directly or indirectly by capturing reflected, refracted, diffracted and scattered light from the moving image signal displayed on the presentation unit 6. Information is observed and output to the brightness calculation unit 8.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 22)
FIG. 17 is a block diagram showing the configuration of the data reproducing apparatus according to the twenty-second embodiment of the present invention. In addition to the structure of Embodiment 11-14, it has the environment observation part 17. FIG. Description of the same parts as those in Embodiment 11 is omitted.

  The environment observation unit 17 is an image sensor, and changes in brightness included in the moving image data, directly or indirectly by capturing reflected, refracted, diffracted and scattered light from the moving image signal displayed on the presentation unit 6. Information is observed and output to the brightness calculation unit 8.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 23)
FIG. 18 is a block diagram showing the configuration of the data reproducing apparatus according to the twenty-third embodiment of the present invention. In addition to the configuration of the fifteenth embodiment, the blinking perception suppression unit 5 is connected to the communication unit 3 that exists independently of the data reproduction device 7. The communication unit 3 is connected to the network 2. Description of the same parts as those in the fifteenth embodiment is omitted. The blinking perception suppression unit 5 can execute part or all of the processing in the data processing server 12 independently of the data reproduction device 7.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 24)
FIG. 19 is a block diagram showing the configuration of the data reproducing apparatus according to the twenty-fourth embodiment of the present invention. In addition to the configuration of the sixteenth embodiment, the blinking perception suppression unit 5 is connected to the communication unit 3 that exists independently of the data reproduction device 7. The communication unit 3 is connected to the external terminal 13. The description of the same parts as those in Embodiment 16 is omitted. The blinking perception suppression unit 5 can execute part or all of the processing in the external terminal 13 independently of the data reproduction device 7.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

(Embodiment 25)
FIG. 20 is a block diagram showing the configuration of the data reproducing apparatus according to the twenty-fifth embodiment of the present invention. In addition to the configuration of the seventeenth embodiment, the blinking perception suppression unit 5 is connected to the communication unit 3 that exists independently of the data reproduction device 7. The communication unit 3 is connected to the external terminal 13. The description of the same parts as those in Embodiment 17 is omitted. The blinking perception suppression unit 5 can execute part or all of the processing in the external terminal 13 independently of the data reproduction device 7. At the same time, the data reproducing device 7 can be connected to the network 2 via the external terminal 13.

  By adopting such a configuration, the function can be realized without the need to give the data reproducing device 7 the function of adding brightness fluctuations. In addition, it can be realized at a lower cost by adding only software to a mobile device that includes an image sensor and a display that can generate brightness fluctuations. This is merely an example, and any device having an imaging function and a function that generates brightness fluctuations can be realized by combining a plurality of devices.

  The present invention has been described based on the embodiments. Those skilled in the art will understand that these embodiments are exemplifications, and that various modifications can be made to the combinations of the respective constituent elements and processing processes, and such modifications are also within the scope of the present invention. By the way.

  For example, in the eighteenth embodiment, as shown in FIG. 12, the data playback device 7 having the communication unit 3 and the playback unit 4 and the mobile device having the flashing perception suppression unit 5 are separated and the flashing perception suppression unit 5 Is configured to have the environment observation unit 17 that observes the lightness fluctuation information included in the moving image data, but may be configured to be a separate body and not to include the environment observation unit 17. For example, the function of the blinking perception suppression unit 5 is separated from the data playback device 7 shown in FIG. 1 of the first embodiment, and this function is mounted on a mobile device to be a separate body. 7 and this mobile device may be connected via a wireless or wireless communication path such as Bluetooth (registered trademark) or WiFi. In this case, the moving image signal reproduced from the reproduction unit 4 is input to the lightness calculation unit 8 of the blinking perception suppression unit 5 through this communication path. That is, at least on the mobile device side, information on the brightness fluctuation information of the moving image signal reproduced by the data reproducing device 7 is acquired by the blinking perception suppression unit 5, and the brightness fluctuation of the moving image signal gives to the peripheral visual field characteristics of human beings. It is only necessary that the frequency of lightness fluctuation can be adjusted so as to reduce the influence.

  The present invention is applicable to a presentation device that presents reproduced data mounted in a vehicle.

  DESCRIPTION OF SYMBOLS 1 Internet server, 2 Network, 3 Communication part, 4 Reproduction | regeneration part, 5 Flashing perception suppression part, 6 Presentation part, 7 Data reproduction apparatus, 8 Lightness calculation part, 9 Fluctuation measurement part, 10 Visual field characteristic data part, 11 Light emission part, 12 data processing server, 13 external terminal, 14 usage environment data section, 15 fatigue detection section, 16 viewing environment detection section, 17 environment observation section.

Claims (21)

A playback unit for playing back data including video,
A blinking perception suppression unit that adjusts the frequency of the brightness fluctuation so as to reduce the influence of the brightness fluctuation of the reproduced video signal on the peripheral visual field characteristics of the human,
A data reproducing apparatus comprising:   The blinking perception suppression unit increases the frequency of the brightness variation when the brightness variation of the moving image signal output from the reproduction unit is equal to or less than a threshold set to be equal to or higher than the critical flicker frequency of the human peripheral visual field. The data reproducing apparatus according to claim 1, wherein:   The blinking perception suppression unit is any one of the moving image signal output from the reproduction unit, the brightness variation of which is more than the critical flicker frequency of the human peripheral visual field and less than the critical flicker frequency of the human central visual field 2. A data reproducing apparatus according to claim 1, wherein the frequency of brightness fluctuation is increased when the threshold value is not more than the threshold value.   4. The data reproducing apparatus according to claim 2, wherein the blinking perception suppressing unit increases the threshold value as the blinking area is larger with respect to the moving image signal output from the reproducing unit. 5.   4. The flashing perception suppressing unit increases the threshold value as the display size for displaying the moving image signal is larger than the moving image signal output from the reproducing unit. 5. Data playback device.   The blinking perception suppression unit reduces the threshold value as the age of a subject who views the moving image signal in a peripheral visual field is higher than the moving image signal output from the reproduction unit. Item 4. The data reproducing device according to Item 2 or 3.   The blinking perception suppression unit is configured to set the threshold for the moving image signal output from the reproduction unit when the target person who views the moving image signal in a peripheral visual field is viewing with a single eye than when viewing with both eyes. 4. The data reproducing apparatus according to claim 2, wherein the data reproducing apparatus is enlarged.   4. The data reproduction according to claim 2, wherein the blinking perception suppressing unit reduces the threshold value as the brightness of the moving image signal is higher than the moving image signal output from the reproducing unit. apparatus.   The flicker perception suppression unit reduces the threshold value as the fatigue level of a subject who views the video signal in a peripheral visual field is greater with respect to the video signal output from the playback unit. The data reproducing apparatus according to claim 2 or 3.   The flicker perception suppression unit has a greater degree of fatigue of a subject who views the video signal in a peripheral visual field with respect to the video signal output from the playback unit, and the threshold value increases as the age of the subject increases. 10. The data reproducing apparatus according to claim 9, wherein the lowering width of the data is further increased.   The blinking perception suppression unit is lower in age of the subject when the subject who views the video signal in a peripheral visual field recovers from a state of high fatigue with respect to the video signal output from the playback unit. 4. The data reproducing apparatus according to claim 2, wherein the threshold value is increased more greatly.   The blinking perception suppression unit stops the processing when the subject who views the moving image signal in the peripheral visual field catches the moving image signal with a blind spot with respect to the moving image signal output from the reproduction unit. The data reproducing apparatus according to claim 2 or 3, wherein   The blinking perception suppression unit captures the moving image signal at a viewing angle away from a central visual field by a subject who views the moving image signal in a peripheral visual field with respect to the moving image signal output from the reproduction unit. 4. The data reproducing apparatus according to claim 2, wherein the threshold value is made smaller.   The flicker perception suppression unit is configured to reduce the threshold when the seated seat is forward for a subject who views the video signal in a peripheral visual field with respect to the video signal output from the playback unit. The data reproducing apparatus according to claim 2 or 3.   The blinking perception suppressing unit increases the threshold value as the eye movement of the subject who views the moving image signal in the peripheral visual field is larger with respect to the moving image signal output from the reproduction unit. The data reproducing apparatus according to claim 2 or 3.   16. The reproduction unit according to claim 1, wherein the reproduction unit outputs a moving image signal having a length of one period or more of a critical flicker frequency of a human peripheral visual field or central visual field to the blinking perception suppressing unit. A data reproducing apparatus according to claim 1.   17. The data reproducing apparatus according to claim 1, wherein a part or all of the processing executed by the blinking perception suppression unit is executed by an Internet server or a connected terminal. A communication unit for acquiring data including moving images via the Internet;
The data reproducing apparatus according to claim 1, wherein the reproducing unit reproduces data acquired by the communication unit. An antenna for wireless communication;
A data reproducing device according to any one of claims 1 to 18,
Is a one-chip integrated circuit. A mobile device that acquires information on brightness fluctuation of a moving image signal reproduced by a data reproduction device having a reproduction unit that reproduces data including a moving image and adjusts the brightness fluctuation,
A mobile device comprising a blinking perception suppression unit that adjusts the frequency of brightness fluctuations so as to reduce the influence of brightness fluctuations of a reproduced moving image signal on the peripheral visual field characteristics of a human. A playback step for playing back data including video,
A blinking perception suppression step for adjusting the frequency of the brightness fluctuation so as to reduce the influence of the brightness fluctuation of the reproduced moving image signal on the peripheral visual field characteristics of the human,
A data reproduction method comprising: