JP5436293B2 - Display device - Google Patents

Description

  The present invention relates to a display device capable of displaying advertisements, guidance, operation information, and the like directed to vehicle occupants (passengers, etc.) in a vehicle such as a train or a bus in accordance with the brightness of the surroundings. It is.

  In vehicles such as trains and buses, display devices for providing various information such as advertisements, guidance, and operation information to vehicle occupants are provided. As the vehicle such as a train or bus moves, the positional relationship between the vehicle and the sun and the positional relationship between the vehicle and the surrounding buildings change, so the brightness around the vehicle changes. Also, the brightness around the vehicle changes when the vehicle passes through the tunnel. When the brightness around the vehicle changes, the visibility of the image displayed on the display device decreases or the image looks dazzling, and the visibility of the image displayed on the display device decreases. On the other hand, in patent document 1, by providing the vehicle exterior illumination intensity sensor which detects the illumination intensity outside the vehicle provided in the vehicle, and the automatic adjustment apparatus which adjusts the brightness | luminance of a display part based on the output of the vehicle exterior illumination intensity sensor The video is displayed in an easy-to-see manner without giving the viewer a sense of incongruity.

  Also, in Patent Document 2, the color arrangement of the guide image generated by the image generation unit and the display characteristics of the display unit (specifically, luminance, contrast, etc.) so that the display image is most easily seen with respect to the brightness outside the vehicle. By adjusting at least one of color tone, color intensity, etc., the guide image is always displayed in an easy-to-read manner corresponding to the brightness outside the vehicle.

  Further, in Patent Document 3, a black and white image is mixed with a display target image at a predetermined blend ratio in accordance with the ambient brightness detected by the external light detection means, and the mixed image (blend image) is displayed. By outputting to the screen, the glare of the image is reduced and the image is displayed easily.

Japanese Utility Model Publication No. 6-17159 (page 2, lines 29-33) JP 2000-10543 A (2nd page, lines 69 to 81) JP 2008-309967 A (page 4, lines 5 to 15)

  In Patent Document 1 or Patent Document 2 described above, the luminance of the display unit is adjusted in order to display the video on the display unit in an easy-to-view manner. However, since there is an upper limit in brightness adjustment, there is a problem in that when a dark image is displayed in a place where the surroundings are bright, the image may not be displayed easily even if the brightness is set to the upper limit.

  Further, in Patent Document 2 described above, at least one of the color arrangement of the guide image and the display characteristics (contrast, hue, color density) of the display unit is adjusted. Since the images are mixed at a predetermined blend ratio, there is a problem that the impression of the video changes.

A display device according to the present invention includes:
In a display device that is installed in a vehicle and displays information,
A brightness detector that detects ambient brightness and outputs ambient brightness data;
A vehicle information output unit that outputs vehicle data indicating information about the vehicle;
A time detection unit that outputs time data indicating an elapsed time after the vehicle departs;
A first storage unit for storing ambient brightness data output from the brightness detection unit, vehicle data output from the vehicle information output unit, and time data output from the time detection unit;
A video data input unit for inputting a plurality of video data;
A second storage unit for storing a plurality of video data output from the video data input unit;
The order of displaying the plurality of video data from the ambient brightness data, vehicle data, and time data stored in the first storage unit, and the plurality of video data stored in the second storage unit. A display order determination unit that determines and outputs display order data indicating the determined order;
A third storage unit for storing display order data output from the display order determination unit;
From the vehicle data output from the vehicle information output unit and the display order data stored in the third storage unit, video selection data for specifying video data to be displayed is output, from the second storage unit, A video data reading unit for reading and outputting the video data specified by the video selection data;
A display unit for displaying video data output from the second storage unit,
The display order determining unit performs ordering so that video data having a dark image is displayed in a place where the surrounding brightness is dark, and image data having a bright image is displayed in a place where the surrounding brightness is bright. It is characterized by.

  According to the present invention, ordering is performed so that video data with a dark image is displayed in a place where the surrounding brightness of the vehicle is dark, and video data with a bright image is displayed in a place where the surrounding brightness is bright. For this reason, an unprecedented remarkable effect that an easy-to-view video corresponding to the ambient brightness can be displayed is obtained.

It is a block block diagram which shows the display apparatus by Embodiment 1 of this invention. FIG. 3 is a block configuration diagram illustrating a configuration example of an environmental condition output unit of the display device according to the first embodiment. 3 is a block configuration diagram illustrating a configuration example of a brightness detection unit of the display device according to Embodiment 1. FIG. 6 is a diagram illustrating a configuration example of a first storage unit of the display device according to Embodiment 1. FIG. 4 is a diagram showing information stored in a first storage unit of the display device according to Embodiment 1. FIG. 3 is a block configuration diagram illustrating a configuration example of a display order determination unit of the display device according to Embodiment 1. FIG. 6 is a diagram illustrating processing in a display order determination unit of the display device according to Embodiment 1. FIG. It is a figure which shows the structural example of the 1st memory | storage part of the display apparatus by Embodiment 2 of this invention. 6 is a diagram showing information stored in a first storage unit of a display device according to Embodiment 2. FIG. It is a figure explaining the structural example of the display order determination part of the display apparatus by Embodiment 3 of this invention.

Embodiment 1 FIG.
FIG. 1 shows a display device according to Embodiment 1 of the present invention. The illustrated display device includes an environmental condition output unit 101, a brightness detection unit 102, a vehicle information output unit 103, a time detection unit 104, a first storage unit 105, a video data input unit 106, and a second. Storage unit 107, display order determination unit 108, third storage unit 109, video data reading unit 110, and display unit 111.

  The environmental condition output unit 101 outputs environmental condition data ENV including information such as weather, time zone, route, and vehicle traveling direction.

  The brightness detection unit 102 detects the brightness around the vehicle during operation of the vehicle and outputs ambient brightness data BE.

  The vehicle information output unit 103 detects that the vehicle has departed from the station, and outputs station name data NMS indicating the name of the station from which the vehicle has departed and departure information DPT indicating that the vehicle has departed. The station name data NMS and departure information DPT may be collectively referred to as vehicle data TRN. Here, assuming that the vehicle is a train, departure from the station is detected. However, when the vehicle is a bus, departure from the stop is detected. If the vehicle is a bus, stop name data is output instead of the station name data NMS. In the following description, the case where the vehicle is a train is described. When the vehicle is a bus, the same thing as the train can be realized by replacing the station name data NMS with the stop name data.

  The time detection unit 104 detects the elapsed time from the departure of the vehicle from the departure information DPT output from the vehicle information output unit 103, and time data PTM indicating the elapsed time from the departure of the vehicle from the station Is output.

The first storage unit 105 has a plurality of storage areas as will be described later, and is output from the brightness detection unit 102 to a storage area selected according to the environmental condition data ENV output from the environmental condition output unit 101. Brightness data BE, station name data NMS output from the vehicle information output unit 103, and time data PTM output from the time detection unit 104 are stored.
The first storage unit 105 also uses the environmental condition data ENV output from the environmental condition output unit 101 at a predetermined timing, that is, prior to the start of vehicle operation, in the process of determining the video display order described later. A storage area is selected, and ambient brightness data BE, station name data NMS, and time data PTM stored in the selected storage area are output.

  The video data input unit 106 is used to input a plurality of video data VD from the outside, and the input video data VD is stored in the second storage unit 107.

  The second storage unit 107 stores a plurality of video data VD supplied from the video data input unit 106. The second storage unit 107 also selects video data VD to be displayed from the plurality of stored video data VD according to the video selection data SLV output from the video data reading unit 110, and selects the selected video data VD. Is output.

  The display order determination unit 108 includes ambient brightness data BE, station name data NMS, and time data PTM output from the first storage unit 105, and a plurality of video data VD output from the second storage unit 107. The display order data QDP indicating the order in which the plurality of video data VD is displayed is output.

  The third storage unit 109 stores the display order data QDP output from the display order determining unit 108. The third storage unit 109 also outputs display order data QDP stored during operation of the vehicle.

The video data reading unit 110 is output from the station name data NMS and departure information DPT output from the vehicle information output unit 103, display order data QDP output from the third storage unit 109, and the second storage unit 107. The video selection data SLV indicating the video data VD to be displayed next is output by the video data VD.
The display unit 111 displays the video data VD output from the second storage unit 107.

Next, the environmental condition output unit 101 will be described.
As shown in FIG. 2, the environmental condition output unit 101 includes a weather input unit 201, a time zone input unit 202, a route input unit 203, a traveling direction input unit 204, and an environmental condition data generation unit 205.

  The weather input unit 201 outputs weather data WTH input by a driver of a vehicle or a conductor such as a conductor before the train is operated. This weather data WTH represents the weather such as sunny, cloudy, rainy, etc. in the time zone in which the vehicle operates.

The time zone input unit 202 outputs time zone data TMZ input by a crew member such as a vehicle driver or a conductor before the train is operated. This time zone data TMZ represents a time zone during which the vehicle operates (a time zone such as morning, noon, evening, and night in one day).
The route input unit 203 outputs route data RTE input by crew members such as a vehicle driver or a conductor before the train is operated. This route data RTE represents the route (route name) on which the vehicle operates.

  The traveling direction input unit 204 outputs the traveling direction data DIR of the vehicle that is input before the train is operated by a crew of the vehicle driver or the conductor. The traveling direction data DIR indicates in which direction the vehicle operates on the route.

  The environmental condition data generation unit 205 includes weather data WTH output from the weather input unit 201, time zone data TMZ output from the time zone input unit 202, route data RTE output from the route input unit 203, and progress. The traveling direction data DIR output from the direction input unit 204 is temporarily stored in the internal memory 205M and then collectively output as environmental condition data ENV.

  Instead of inputting weather data WTH, time zone data TMZ, route data RTE, and traveling direction data DIR, the crew of the vehicle driver or conductor, such as the driver of the vehicle or the conductor, does not input the illuminometer, hygrometer, rain gauge, etc. A weather detection means (not shown) for detecting the weather by means of, a time zone detection means (not shown) by a clock, a route on which a vehicle is traveling and a traveling direction of the vehicle by a route map and GPS, etc. A traveling direction detection means (not shown) may be provided to automatically detect the weather, time zone, route, and traveling direction, and output the environmental condition data ENV. In addition, the train operation management office may notify the vehicle of the weather, time zone, route, and direction of travel, and output environmental condition data ENV. As a result, it is possible to omit the task of inputting the weather data WTH, the time zone data TMZ, the route data RTE, and the traveling direction data DIR by a crew member such as a vehicle driver or a conductor.

Next, the brightness detection unit 102 will be described with reference to FIG.
As described above, the brightness detection unit 102 detects the brightness around the vehicle during operation of the vehicle, and includes the illuminance detection unit 301 and the ambient brightness calculation unit 302.

The illuminance detection unit 301 includes, for example, an illuminance sensor (not shown), detects the illuminance around the vehicle in operation by the illuminance sensor, and outputs illuminance data LMN.
The ambient brightness calculation unit 302 calculates an average value of the illuminance data LMN output from the illuminance detection unit 301 during the predetermined period (at predetermined time intervals), and the ambient brightness data BE. Output as.

Next, the vehicle information output unit 103 will be described.
The vehicle information output unit 103 detects the departure of the vehicle by a speed sensor (not shown), a wheel rotation sensor (not shown), and the like, and the vehicle information output unit 103 stops before starting the departure information DPT indicating that the vehicle has started. The station name data NMS indicating the station name is output. The name of the station that stopped before departure is obtained from a vehicle operation management system not shown in FIG.

Next, the time detection unit 104 will be described.
The time detection unit 104 includes a time measurement unit (not shown) such as a timer. When the departure information DPT indicating that the vehicle has left the station is output from the vehicle information output unit 103, the time measurement included in the time detection unit 104 is performed. The unit is initialized, and the measurement of the elapsed time since the vehicle leaves the station is started. Thereafter, time data PTM indicating the elapsed time after the vehicle leaves the station is output. Here, the time measurement unit is initialized at the time of departure from each station, but the time measurement unit is initialized only when the starting station of the route departs, and the elapsed time from the starting station (starting station) is shown. The time data PTM may be output.

Next, the first storage unit 105 will be described.
As shown in FIG. 4, the first storage unit 105 includes a storage area group 401 composed of a plurality of storage areas AM-1, AM-2, AM-3, AM-4,. The first storage unit 105 includes ambient brightness data BE output from the brightness detection unit 102, station name data NMS output from the vehicle information output unit 103, and time data PTM output from the time detection unit 104. Store in the storage area group 401. Further, according to the environmental condition data ENV output from the environmental condition output unit 101, any one of the storage areas AM-1, AM-2, AM-3, AM-4,. The data BE, NMS, and PTM are stored in the selected storage area.

FIG. 5 shows an example of information stored in a plurality of storage areas AM-1, AM-2, AM-3, AM-4,.
In FIG. 5, the storage area AM-1 is an area for storing the station name data NMS, the time data PTM, and the ambient brightness data BE when the environmental condition data ENV is "clear, morning, route A, up". .
Similarly, the storage areas AM-2, AM-3, and AM-4 in FIG. 5 also have station name data NMS, time data PTM, and ambient brightness data BE corresponding to the environmental condition data ENV described in FIG. Remember.

  For example, the station name data NMS output from the vehicle information output unit 103, the time data PTM output from the time detection unit 104, and the brightness data BE output from the brightness detection unit 102 are stored during actual operation of the route. It is written in the storage area AMi (i = 1, 2, 3, 4,...) Selected from the area group 401 according to the environmental conditions at that time, and then operated under the same environmental conditions (same route) In this case, data from the corresponding recording area AMi is read and used for determining the display order in the display order determining unit 108.

  In order to operate while displaying the video according to the determination after determining the display order according to the present invention under the first environmental condition on a certain route, prior to that, the brightness corresponding to the station name and the elapsed time is estimated, and the estimation is performed. It is also possible to input the data obtained by the above, store the data when the same route is operated under the same environmental conditions without determining the display order according to the present invention, and use these data The display order may be determined.

  In FIG. 5, four storage areas AM-1 to AM-4 are shown, and the illustration after AM-5 is omitted. However, the number of storage areas is not limited to “4” and corresponds to the environmental condition data ENV. The number of storage areas is provided. In addition, the selector 402 in FIG. 4 has a plurality of storage areas AM-1, AM-2, AM according to the environmental condition data ENV output from the environmental condition output unit 101 at a predetermined timing before the operation of the vehicle. -3, AM-4,... Is selected, and ambient brightness data BE, station name data NMS, and time data PTM stored in the selected storage area are output.

  In addition, according to the environmental condition data ENV output from the environmental condition output unit 101, any one of the plurality of storage areas AM-1, AM-2, AM-3, AM-4,. Storing and outputting ambient brightness data BE output from the brightness detection unit 102, station name data NMS output from the vehicle information output unit 103, and time data PTM output from the time detection unit 104; However, the environmental condition output unit 101 is not provided, and a plurality of storage areas AM-1, AM-2, AM-3, AM-4,. 1, ambient brightness data BE output from the brightness detection unit 102, station name data NMS output from the vehicle information output unit 103, and time data PTM output from the time detection unit 104. It may be stored in the single storage area AM-1 output. Such a configuration performs processing without considering the difference in environmental conditions.

Next, the video data input unit 106 will be described.
The video data input unit 106 inputs a plurality of video data VD such as advertisements and guidance input by the manager in charge of the railway company when the vehicle returns to the garage or when the vehicle has stopped at the station for a long time. Used to do.

Next, the second storage unit 107 will be described.
The second storage unit 107 stores a plurality of video data VD output from the video data input unit 106. The second storage unit 107 also outputs a plurality of stored video data VD at a predetermined timing before operation of the vehicle and during operation of the vehicle. During operation of the vehicle, video data VD corresponding to the video selection data SLV output from the video data reading unit 110 is output.

Next, the display order determination unit 108 will be described with reference to FIG.
The display order determination unit 108 includes the ambient brightness data BE, the station name data NMS, and the time data PTM output from the first storage unit 105, and the plurality of video data VD output from the second storage unit 107. The display order data QDP indicating the order in which the plurality of video data VD is displayed is output by determining the order in which the plurality of video data VD is displayed.

  In determining the display order, display is performed so that video data VD having a low video brightness is displayed in a place where the surrounding brightness is dark, and video data VD having a high video brightness is displayed in a place where the surrounding brightness is bright. Do. The ordering of the video data VD is performed before the train is operated.

  FIG. 6 shows a configuration example of the display order determination unit 108. The display order determination unit 108 includes a video analysis unit 501, a brightness calculation unit 502 for each section, and a display order output unit 503.

  The video analysis unit 501 calculates video brightness from the video data VD output from the second storage unit 107, video brightness data BV indicating the video brightness, and video data from which the brightness has been calculated. Video length data LV indicating the length of VD is output. The video brightness data BV and the video length data LV obtained as a result of analysis in the video analysis unit 501 may be collectively referred to as video analysis data ANV. Note that the “length of video” here means the length of time that the video is displayed, and not only in the case of a video that continues to change over the length of the time, but also the length of the time. This includes the case where still images with the same content are continuously displayed and the case where the same moving image is repeatedly displayed.

  The brightness calculation unit 502 for each section includes ambient brightness data BE output from the first storage unit 105, station name data NMS, time data PTM, and video length data output from the video analysis unit 501. The brightness for each section corresponding to the video length data LV is calculated from the LV, and the brightness data BS for each section indicating the brightness for each section is output. Each section here forms part of the route part from one station to the next station. By dividing the route part from one station to the next station, multiple sections (in the example below) 4) sections are formed. The number of sections constituting the route portion from one station to the next station is determined to be equal to the number of video data to be displayed on the route portion.

  The display order output unit 503 stores the brightness data BS for each section output from the brightness calculation section 502 for each section and the video brightness data BV output from the video analysis unit 501 in the second storage unit 107. The plurality of stored video data VD is ordered, and display order data QDP indicating the order of displaying the plurality of video data VD is output.

FIG. 7 shows processing in the display order determination unit 108.
FIG. 7 shows a case where video data VD1, VD2, VD3, and VD4 are displayed between the A station and the B station.
FIG. 7 shows an example in which the lengths LV1 to LV4 of the video data VD1 to VD4 are all equal to each other. That is, in the present embodiment, it is assumed that a plurality of video data displayed between stations, that is, a plurality of video data to be subjected to display order determination, have the same length.

The video analysis unit 501 calculates and outputs video brightness data BV1 to BV4 indicating video brightness of each video data from the video data VD1 to VD4 output from the second storage unit 107.
In addition, the video analysis unit 501 outputs video length data LV of the video data VD1 to VD4.

  The brightness calculation unit 502 for each section outputs from the first storage unit 105 for the sections SC1 to SC4 from the A station to the B station corresponding to the video length data LV output from the video analysis unit 501. Brightness data BS for each section indicating ambient brightness for each section is calculated from the ambient brightness data BE, station name data NMS, and time data PTM, and the brightness data BS1 for each section shown in FIG. ~ BS4 is output.

  The display order output unit 503 obtains ambient brightness from the brightness data BS1 to BS4 for each section output from the brightness calculation section 502 for each section and the brightness data BV1 to BV4 of the video output from the video analysis unit 501. In order to display the video data VD with a dark video in the dark section, and display the video data VD with a bright video in the bright surrounding area. In the example of FIG. 7, the brightness for each section is BS4, BS1, BS2, BS3 when arranged in order from the brighter, and the video brightness data BV is BV3, BV2, BV4, BV1 when arranged in order from the brighter. Become. The section SC4 (section brightness = section brightness = so that the image data VD having a dark image brightness is displayed in the section where the surrounding brightness is dark and the image data VD having a bright image brightness is displayed in the section where the surrounding brightness is bright. Video data VD3 (Brightness of video = BV3) in BS4), Video data VD2 (Brightness of video = BV2) in section SC1 (Brightness of video = BV2), and Section SC2 (Brightness of section = BS2) Display the video data VD4 (image brightness = BV4) and the image data VD1 (image brightness = BV1) in the section SC3 (section brightness = BS3). , VD1 and VD3.

  In the example of FIG. 7, the number of video data VD displayed from the A station to the B station is four, but the number of video data VD is not limited to four and may be other numbers. In the example of FIG. 7, the display ordering is performed on the video data VD displayed from the A station to the B station. However, the display is not limited to between two stations, but between three or more stations. The video data VD displayed while the vehicle is traveling may be ordered.

Next, the third storage unit 109 will be described.
The third storage unit 109 stores the display order data QDP output from the display order determination unit 108 before the operation of the vehicle (for example, prior to departure at the first departure station). The third storage unit 109 also outputs the stored display order data QDP during operation of the vehicle. Further, in the return trip when the vehicle reciprocates along the route, the display order data QDP stored in the third storage unit 109 is rearranged in the reverse order, and the order after the reverse order is rearranged is displayed as the display order data QDP. May be output as

Next, the video data reading unit 110 will be described.
The video data reading unit 110 displays in each section by the station name data NMS and departure information DPT output from the vehicle information output unit 103 and the display order data QDP output from the third storage unit during operation of the vehicle. Video selection data SLV indicating the video data VD is output. When the operation of the vehicle is delayed, it takes time to display all the video data VD indicated by the display order data QDP, so that the video data VD is displayed in the extra time. Video selection data SLV is output according to time. In this case, for example, the last displayed video data is displayed again. If the vehicle arrives at the station early, it may occur when the video data VD indicated by the display order data QDP is not completely displayed. In that case, the vehicle stops at the station until the scheduled departure time. In order to carry out the adjustment, all the video data VD indicated by the display order data QDP may be displayed during the adjustment, or the display may be interrupted in the middle.

  When the vehicle reciprocates on the same route as described above, the display order data is used in the reverse order on the return path, and as a result, the video data is displayed in the reverse order.

Next, the display unit 111 will be described.
The display unit 111 displays the video data VD output from the second storage unit 107 and provides information such as advertisements, transfer guidance, and operation information to vehicle occupants (passengers and the like).

In the display unit 111, the luminance may be adjusted from the surrounding brightness data BE output from the brightness detection unit 102. When adjusting the brightness, the brightness is increased when the surrounding brightness is bright, and the brightness is decreased when the surrounding brightness is dark. Thereby, the video data VD output from the video data reading unit 110 can be displayed more easily.
In the case where the display unit 111 is configured by a liquid crystal display device including a backlight, the luminance can be adjusted by controlling the backlight, for example.

  According to the configuration of the first embodiment as described above, in the display order determination unit 108, the ambient brightness of the vehicle stored in the first storage unit 105 and the plurality of images stored in the second storage unit 107. The display order of the video data VD is determined according to the brightness of the video of the data VD, and the video data reading unit 110 stores a plurality of data stored in the second storage unit 107 according to the display order of the video data VD. Since the video data VD are rearranged and output, an easy-to-view video can be displayed without a sense of incongruity according to the brightness around the vehicle.

  In addition, since the order in which the plurality of video data VD stored in the second storage unit 107 is displayed changes due to the change in brightness around the vehicle, the video displayed on the display device without getting tired of the vehicle occupant is displayed. Can see.

  Further, the vehicle information output unit 103 outputs the station name data NMS, and based on the station name data NMS, the display order is determined by the display order determining unit 108 and the video data is read by the video data reading unit 110. An easy-to-view video can be displayed according to the brightness around each section between adjacent stations (the route portion for which the display order is determined).

  In addition, when departure information DPT indicating that the vehicle has departed is output from the vehicle information output unit 103 in the time detection unit 104, the time measurement unit provided therein is initialized, so that even when the operation of the vehicle is delayed The location of the train can be known correctly, and an easy-to-view video can be displayed according to the ambient brightness.

  The video analysis unit 501 outputs video brightness data BV indicating the brightness of the video and video length data LV indicating the length of the video data VD for which the brightness is calculated. An easily viewable video can be displayed according to the length.

  Further, the display order determination unit 108 displays the past ambient brightness data BE stored in the first storage unit 105 according to environmental conditions such as weather, time zone, route, and traveling direction. Since the order of the video data VD is determined, the video can be displayed in an easy-to-see manner according to the environmental conditions when the vehicle is traveling.

  In addition, since the order in which the video data VD is displayed changes according to the environmental conditions during vehicle travel, information can be provided to the vehicle occupant without getting tired of the vehicle occupant.

  In addition, since the brightness detection unit 102 calculates the average value of the illuminance values output from the illuminance sensor and outputs the ambient brightness data BE for each predetermined period, the amount of the ambient brightness data BE As a result, the circuit scale of the first storage unit 105 can be reduced.

Embodiment 2. FIG.
The second embodiment of the present invention has a configuration in which the first storage unit 105 in FIG. 1 is replaced with the first storage unit 115 in FIG. 8 in the display device shown in the first embodiment.

  The first storage unit 115 is generally the same as the first storage unit 105 of the first embodiment shown in FIG. 4, but differs in that it further includes a brightness calculation unit 403.

  The brightness calculation unit 403 is a peripheral area stored in the storage area AM-1, AM-2, AM-3, AM-4,... Corresponding to the input environmental condition data ENV. From the brightness data BE and the ambient brightness data BE output from the brightness detector 102, new ambient brightness data BE is calculated as described later, and the ambient brightness data stored so far is calculated. Instead of BE, the new ambient brightness data BE is stored. In other words, the ambient brightness data BE stored in the corresponding storage area is updated in consideration of the ambient brightness data BE output from the brightness detector 102.

  The operation will be described with reference to FIG. An example in which the environmental condition data ENV is fine, morning, A route, and ascending is shown. In this case, the storage area AM-1 is selected. When the vehicle departs from station A (the elapsed time from the departure is 0 second), the ambient brightness data BE = d at that time and the surroundings stored in the storage area AM-1 shown in FIG. An average value (d + d0) / 2 is calculated from the brightness data BE = d0, and this is used as new ambient brightness data BE = (d0), and the data BE stored in the storage area AM-1 until then is calculated. = Stored in place of d0. The same processing is performed after 5 seconds from departure from station A.

Instead of obtaining a simple average of the ambient brightness data BE = d0 stored as described above and the newly detected ambient brightness data BE = d, a weighted average may be obtained.
By performing such processing, the ambient brightness data BE can be updated based on the past accumulated data and the latest detected data, so that more stable processing can be performed.

  According to the configuration of the second embodiment as described above, the video data VD can be displayed in an easy-to-view manner according to the past ambient brightness over a long period of time.

Embodiment 3 FIG.
The third embodiment of the present invention has a configuration in which the display order determination unit 108 in FIG. 1 is replaced with the display order determination unit 118 shown in FIG. 10 in the display device shown in the first embodiment.

  The display order determination unit 118 is generally the same as the display order determination unit 108 of the first embodiment shown in FIG. 6, but further includes a display order candidate generation unit 511 and a fourth storage unit 512, and further outputs a display order. The difference is that a correlation degree calculation unit 513 and an optimal order selection unit 514 are provided instead of the unit 503, and a plurality of videos that are targets of display order determination, for example, a plurality of videos displayed between adjacent stations. The display order can be determined even when the lengths are different from each other.

  The display order candidate generation unit 511 generates a plurality of display data order candidates (display order candidates) from the plurality of video data VD output from the second storage unit 107, and the plurality of video data VD. A plurality of display order candidate data CQD indicating display order candidates are output.

For example, when there are N images (N ≧ 2) to be displayed between adjacent stations, the display order is
_N P _N (= N × (N−1) × (N−2) ×... 1)
Exist. For example, all the combinations are set as display order candidates. As in the first embodiment, when N = 4, the number of display order candidates is
_N P _N = ₄ P ₄ = 4 × 3 × 2 × 1 = 24
It becomes.

The fourth storage unit 512 stores length data LV and brightness data BV of each of the plurality of videos output from the video analysis unit 501.
The fourth storage unit 512 also outputs the stored video length data LV and video brightness data BV in the order represented by the display order candidate data CQD output from the display order candidate generation unit 511.

  In the brightness calculation unit 502 for each section, when adjacent stations are displayed in the order in each of the above display order candidates, each is divided into lengths corresponding to the length of each video data. Brightness data for each section is calculated. In this case, the number of sets of brightness data BS for each section is the same as the number of display order candidates, and each set of brightness data BS for each section and video brightness data in the corresponding display order candidates. The degree of correlation CRB with the set of BV is obtained by the degree-of-correlation calculation unit 513.

Here, the degree of correlation between the set of brightness data BS and the set of video brightness data BV for each section is the same as that of the j-th section between adjacent stations (the route portion subject to display order determination). When the brightness data is BSj and the brightness of the video displayed in the same j-th section is represented by BVj in each display order candidate in the same route portion,
Sum of absolute values of BSj-BVj from j = 1 to N or (BSj-BVj) ² of j = 1 to N (N is the total number of video data displayed between adjacent stations)
The smaller the value is, the larger the correlation CRB is.

  The correlation degree calculation unit 513 uses the brightness data BS for each section output from the brightness calculation section 502 for each section and the brightness data BV of the video output from the fourth storage unit 512 for each section. And the brightness level of the image are calculated, and correlation degree data CRB indicating the degree of correlation is output.

  The optimal order selection unit 514 calculates the correlation between the brightness of each section and the brightness of the video from the correlation degree data CRB output from the correlation degree calculation unit 513 and the display order candidate data CQD output from the display order candidate generation unit 511. The largest display order candidate data CQD is selected and output as display order data QDP indicating the optimum display order.

  According to the configuration of the third embodiment as described above, in the correlation degree calculation unit 513, for all combinations generated by the display order candidate generation unit 511, the brightness data BS for each section and the brightness data BV of the video are displayed. The correlation degree is calculated and output from the video data input unit 106 in order to select the display order candidate data CQD having the highest correlation degree in the optimum order selection unit 514 and output it as the display order data QDP indicating the optimum display order. Even when the lengths of the plurality of video data VD are different, the video can be displayed in an easy-to-view manner.

  In the display device shown in Embodiment 2, the same effect can be obtained when the display order determining unit 108 in FIG. 1 is replaced with the display order determining unit 118 shown in FIG.

  Assuming that the vehicle stops at the next station after leaving one station, the display order is determined for the part of the route between adjacent stations, but the trains that do not stop at each station In this case, the display order may be determined for a portion (route portion) from one station that stops to the next station that stops.

  The case where the vehicle is a train has been described above. However, as described above, the present invention can also be applied to a case where the vehicle is a bus. It should be read as “stop”. The “stop location” in the claims of the present application means a station or a stop.

  101 environmental condition output unit, 102 brightness detection unit, 103 vehicle information output unit, 104 time detection unit, 105, 115 first storage unit, 106 video data input unit, 107 second storage unit, 108 display order determination unit 109 Third storage unit 110 Video data reading unit 111 Display unit 201 Weather input unit 202 Time zone input unit 203 Route input unit 204 Travel direction input unit 205 Environmental condition data generation unit 301 Illuminance detection 302, ambient brightness calculation unit, 401 storage area group, AM-1, AM-2, AM-3, AM-4 storage area, 402 selector, 403 brightness calculation unit, 501 video analysis unit, every 502 sections Brightness calculation unit, 503 display order output unit, 512 fourth storage unit, 511 display order candidate A generation unit, 513 correlation degree calculation unit, 514 optimal order selection unit, 118 display order determination unit.

Claims (16)

In a display device that is installed in a vehicle and displays information,
A brightness detector that detects ambient brightness and outputs ambient brightness data;
A vehicle information output unit that outputs vehicle data indicating information about the vehicle;
A time detection unit that outputs time data indicating an elapsed time after the vehicle departs;
A first storage unit for storing ambient brightness data output from the brightness detection unit, vehicle data output from the vehicle information output unit, and time data output from the time detection unit;
A video data input unit for inputting a plurality of video data;
A second storage unit for storing a plurality of video data output from the video data input unit;
The order of displaying the plurality of video data from the ambient brightness data, vehicle data, and time data stored in the first storage unit, and the plurality of video data stored in the second storage unit. A display order determination unit that determines and outputs display order data indicating the determined order;
A third storage unit for storing display order data output from the display order determination unit;
From the vehicle data output from the vehicle information output unit and the display order data stored in the third storage unit, video selection data for specifying video data to be displayed is output, from the second storage unit, A video data reading unit for reading and outputting the video data specified by the video selection data;
A display unit for displaying video data output from the second storage unit,
The display order determining unit performs ordering so that video data having a dark image is displayed in a place where the surrounding brightness is dark, and image data having a bright image is displayed in a place where the surrounding brightness is bright. A display device. An environmental condition output unit that outputs environmental condition data indicating the state of the environment in which the vehicle travels;
The first storage unit includes a plurality of storage areas,
According to the environmental condition data output from the environmental condition output unit, one storage area is selected from the plurality of storage areas, and the ambient brightness data output from the brightness detection unit and the vehicle information output unit Storing the output vehicle data and the time data output from the time detector in the selected storage area;
According to the environmental condition data output from the environmental condition output unit, one storage area is selected from the plurality of storage areas, the ambient brightness data and the vehicle data stored in the selected storage area, The display device according to claim 1, wherein the time data is output.   The said vehicle information output part outputs the departure information which shows that the vehicle departed, and the stop place name data which shows the name of the stop place which departed as said vehicle data. Display device.   The time detection unit initializes time measurement at the time of vehicle departure from the departure information output from the vehicle information output unit, measures an elapsed time after vehicle departure, and indicates an elapsed time after vehicle departure 4. The display device according to claim 3, wherein time data is output. The display order determination unit
The display device according to any one of claims 1 to 4, wherein the display order of a plurality of video data to be displayed in a route portion that is a target of display order determination is determined.   The display device according to claim 5, wherein a route portion that is a target of the display order determination is a route portion from one stop location to the next stop location. The display order determination unit
A video analysis unit that analyzes each video data from a plurality of video data stored in the second storage unit, and outputs video brightness data and video length data;
Brightness for each section that forms part of the route portion from ambient brightness data, vehicle data, time data, and video length data output from the video analysis unit stored in the first storage unit A brightness calculation unit for each section that calculates brightness and outputs brightness data for each section;
Display of a plurality of video data stored in the second storage unit from the brightness data of the video output from the video analysis unit and the brightness data of each section output from the brightness calculation unit of each section A display order output unit that determines the order and outputs display order data indicating a display order of the plurality of video data;
The display order output unit performs ordering so that video data having a dark image is displayed in a section where the surrounding brightness is dark, and video data having a bright image is displayed in a section where the surrounding brightness is bright. The display device according to claim 5 or 6. The display order determination unit
A video analysis unit that analyzes each video data from a plurality of video data stored in the second storage unit, and outputs video brightness data and video length data;
A fourth storage unit for storing video brightness data and video length data output from the video analysis unit;
A display order candidate generating unit that generates a plurality of candidates for the order of displaying video data from the video data output from the second storage unit, and that outputs display order candidate data indicating the display order candidates;
Sections each forming part of the route portion from ambient brightness data, vehicle data and time data stored in the first storage unit, and video length data stored in the fourth storage unit A brightness calculation unit for each section that calculates brightness for each section and outputs brightness data for each section;
A correlation between the brightness of the video and the brightness of each section is detected from the brightness data of the video output from the fourth storage section and the brightness data of each section output from the brightness calculation section for each section. A correlation degree calculation unit for outputting correlation degree data;
From the correlation degree data output from the correlation degree calculation unit and the display order candidate data output from the display order candidate generation unit, the display order candidate data having the largest correlation between the brightness of each section and the brightness of the video is selected. The display device according to claim 5, further comprising: an optimum order selection unit that outputs the selected display order candidate data as the display order data. The brightness data of the j-th section (j = 1 to N) in the route portion that is the target of the display order determination is BSj, and in the same route portion, each display order candidate is the j-th section. When the brightness of the displayed image is represented by BVj,
The sum of absolute values of BSj-BVj from j = 1 to N or the sum of (BSj-BVj) ² from j = 1 to N (N is displayed in the route portion subject to the display order determination) The display device according to claim 8, wherein the number of pieces of video data) is calculated and the degree of correlation is determined to be greater as the sum is smaller.   The display device according to claim 1, wherein the environmental condition output unit outputs data representing a time zone as environmental condition data.   The display device according to claim 1, wherein the environmental condition output unit outputs data representing weather as environmental condition data.   The display device according to claim 1, wherein the environmental condition output unit outputs data representing a name of a route on which the vehicle travels as environmental condition data. The video data reading unit
When the vehicle travels back and forth on a route, the display order data stored in the third storage unit is used in reverse order, and a plurality of video data stored in the second storage unit is displayed. The display device according to any one of claims 1 to 12, wherein the output is performed in a reverse order of the order indicated by the order data. The first storage unit calculates new ambient brightness data from the ambient brightness data output from the brightness detection unit and the ambient brightness data stored in the first storage unit. The display according to any one of claims 1 to 13, wherein the new ambient brightness data is stored instead of the ambient brightness data stored in the first storage unit. apparatus. The brightness detection unit calculates an average value of illuminance data generated by the illuminance detection unit at a predetermined time interval, and outputs the average value as ambient brightness data indicating ambient brightness. The display device according to any one of 1 to 14.   The said display part controls the backlight of the said display part according to the surrounding brightness data output from the said brightness detection part, The brightness | luminance is changed. Item 1. A display device according to item 1.

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