JP2000172220A - Video display device and video display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make more natural and sharp continuous videos to be seen. SOLUTION: This display device is constituted of plural sets of display devices 6 arranged at places where can be seen from a mobile object running while carrying persons in one line state at prescribed intervals, a video signal supplying device 9 supplying still picture video signals to the plural sets of the display devices 6 and an intermittent display control means which operates the plural sets of the display devices 6 in unison and also controls display times of the still picture video signals which are to be displayed on the plural sets of display devices 6 shorter than display stopping times of the videos. Times of the still picture video signals are made to be different by every little amount with respect to respective display devices 6 and when the still picture video signals are seen from the mobile object, the video signals are video signals becoming continuous movement as the whole of the videos. Since the video signals are given by electric signals, the changing of contents is completed by only rewriting the contents of a picture memory, Consequently, any kinds of videos can be displayed and it is possible to display plural videos. Multiple images are made to be eliminated by making display times of the videos shorter than the display stopping times of the videos and more natural and sharp videos are obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous moving image (moving image) or a still image of a person riding on a traveling moving body, such as a train running on rails, an elevator, or the like. The present invention relates to a video display device that can be viewed as a video. More specifically, by regulating the relationship between the video display time and the video display stop time, natural and clear moving images and still images can be displayed.

[0002]

2. Description of the Related Art Conventionally, this type of video display device, for example, a video display device for continuous motion video which can be viewed as a moving image, is mounted on a wall along a traveling direction of a traveling path on which a moving object travels with a person. A plurality of still image display devices that are arranged in a line at predetermined intervals and become a continuous image when captured as a whole image, and a blinking illumination device that can blink each of the plurality of still images simultaneously. It is composed of

[0003] For example, "Japanese Patent Laid-Open No. 5-27197"
(Patent Document 1) discloses a configuration in which a plurality of still images that are continuously operated at predetermined intervals in a line are sequentially arranged on a wall surface along a traveling direction of a traveling path.

[0004] Further, "Japanese Patent Laid-Open No. 2-201489"
(Reference 2) discloses a technique in which a video signal is displayed by a display device using an optical fiber, and the video signal moves following a train.

[0005] Further, "Japanese Patent Laid-Open No. 7-104693"
(Reference 3) discloses the use of a light-emitting display means to arrange still images in a line to be viewed as a moving image, and a character display device that moves at the same speed as a train. It also describes that the light emitting means emits light for a short time.

[0006]

By the way, of the plurality of prior arts described above, in the technique disclosed in the above-mentioned reference 1, when changing an image which is operated continuously, a still image must be manually replaced. There was a drawback that the work was difficult, it was dangerous, and it took time and effort. Further, when such an image is displayed in a tunnel, it is impossible to change the content of the still image for each train. This is because there is a danger due to the passing train.

[0007] The technique of Document 2 is an invention that focuses on a mode in which characters move as in electronic bulletin news. By supplying successive still images, passengers can view moving images. There is no disclosure of the technology.

Further, in the conventional example of Document 3, there is a problem that the speed of the train is always required to display characters, and in displaying moving images, the light emitting display means emits light only for a short time. Although described, there is no description or suggestion about the specific time of this light emission. Light emission time is more natural and clear continuous motion images and viewers (passengers)
Has become a very important factor in realizing a still image that looks still.

In view of the above-mentioned drawbacks of the prior art, the present invention makes it possible to change a still image, which is a video source, in a very short time and to easily replace a continuous operation image, and to provide a more natural and clear image. It is an object of the present invention to provide a video display device that can be viewed as a continuous motion video or a still video. The above and other objects and novel features of the present invention will be described with reference to the following description and the accompanying drawings.
It will be more complete.

[0010]

According to a first aspect of the present invention, there is provided an image display apparatus, comprising: A plurality of display devices arranged in a row, a video signal supply device for supplying a still image video signal to the plurality of display devices, and the plurality of display devices operating simultaneously, Intermittent display control means for controlling the display time of the still image video signal displayed on the display device to be shorter than the video display stop time.

In the video display method according to the present invention described in claim 8, a step of creating a plurality of still images which are sequentially projected and operate continuously, and the plurality of still images created in step 1 are stored in a storage device. And a step of intermittently displaying on the display device corresponding to each of the plurality of stored still images, wherein the step of intermittently displaying the image includes the time of the image display time t1 and the display stop time t2. The ratio is set to 100t1 <t2.

According to an eleventh aspect of the present invention, there is provided an image display apparatus comprising: a plurality of liquid crystal display devices arranged in a line at a predetermined interval in a portion which can be seen from a moving body carrying a person; A video signal supply device that supplies a still image video signal to the plurality of liquid crystal display devices, a light source that causes the plurality of liquid crystal display devices to perform a display operation, and a light source blink control unit that controls blinking of the light sources. Wherein the video signal supply device has a random access memory (RAM) for storing the still image video signal.

According to the present invention, the video source is an electric signal, and it is extremely easy to change the video source. Therefore, it is possible to supply a video signal to the display device so that any video content is continuously operated at any timing or a video which is still for the passenger. As described above, since the video source is a still image video signal, it is possible to easily change the still image according to the purpose or application.

By making the image display time shorter than the stop time, a more natural and clear image without blur can be displayed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. The following embodiment is a case where the present invention is applied to a continuous image display device that can be viewed as a continuous operation image.

FIG. 1 shows an embodiment to which the present invention is applied. In this example, a train 4 is used as a moving body which can run on a traveling path 3 on which rails 2 are installed and which can carry a person.
More specifically, the video display devices 6 are arranged in a line at predetermined intervals on a portion that can be seen from the train 4 through the window 4a, in this example, on the wall surface 5a of the tunnel 5 where the traveling path 3 is formed. Is configured. In this example, a two-dimensional display device (LED display device) in which a plurality of LEDs (light emitting diodes) are arranged in a matrix is used as the display device 6. FIG. 2 shows the continuous operation video display device 1 that supplies a still video signal to be continuously operated to the LED display device 6 as a whole.

In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals, and their description is omitted.

In FIG. 2, the continuous operation video display device 1 comprises a video memory 7 for supplying a still video signal to the LED display device 6 and a video memory control device 8 for controlling the video memory 7. A signal supply device 9; further, the video signal supply device 9 and the LED display device 6;
And a buffer memory 10 for intermittently supplying a still image signal from the image memory 7 to the plurality of LED display devices 6.

As the image memory 7, a random access memory (RAM) or the like can be used. A still image signal that is sequentially and continuously operated and supplied from a video signal supply device 9 using the image memory 7 is a video signal that is an image in which motion is continuous as a moving image, and forms a so-called animation moving image 1. This is the same as the video signal for each frame. Therefore, it is also a signal representing a still image such as one frame of a movie film.

The video signal supply device 9 has a first monitor 13
, The second monitor 15 and the image input device 14 are connected. Further, a signal line 12 from the video signal supply device 9 is connected to the buffer memory 10, whereby the operation of the buffer memory 10 is controlled.

First, the operation of taking in a still image signal into the image memory 7 in the continuous operation video display device 1 configured as described above will be described. A jumping rabbit is illustrated as a still image that is sequentially and continuously operated. Still images 6A, 6B, 6C, 6D, and 6E in which the rabbit appears to jump from different windows 4a as shown in FIG. 3 will be described.

First, a still image 6A showing the rabbit before jumping
Is input from the image input device 14 to the image memory control device 8 and the still image is confirmed on the second monitor 15, and if the still image to be used is determined, the address of the image memory 7 is designated and the still image 6A Is stored in the image memory 7.

Next, a still image 6B showing the next motion of the rabbit is taken into the image memory control device 8 by the image input device 14, and the image is confirmed on the second monitor 15,
A different address of the image memory 7 is designated and the still image 6 is stored at that address.
B is stored. Similarly, the respective addresses up to the still image 6E are designated and stored in the image memory 7.

The stored five still images can be simultaneously checked on the multi-display monitor 13, for example.

As an example, five still images have been described.
Of course, in actual application of the present invention, the most popular example is 30 still images per second. In this case, for example, 90 still images are required to display for 3 seconds. Needless to say. Hereinafter, the description will be continued using five still images for the sake of simplicity.

As the image input device 14 for inputting a still image to the image memory control device 8, a telecine can be considered first. Telecine is a device for converting one frame per frame from a normal movie film into a television signal, and is capable of converting a still image of 24 frames per second into a television signal of 30 frames per second.

Since images for commercial use are generally taken with a silver halide film, telecine is used as the image input device 14. If a commercial video is shot by a video camera, a video tape recorder (VTR) with a still image playback function or the like is used as the image input device 14. Further, when an original still image is shot using a VTR dedicated to animation creation, the VTR itself can be the image input device 14. If the moving image to be finally used is determined, the reproduced moving image of the VTR is sent to the image memory control device 8 as it is, and the frame synchronization signal included in the reproduced image signal is detected and the image memory 7 can also be stored.

The five still images stored in the image memory 7 in this way are supplied to the buffer memory 10 via the transfer line 11 under the control of the image memory controller 8. The buffer memory 10 is provided for each LED display device 6
Has an address corresponding to. Therefore, the still image 6A supplied from the image memory 7 is, for example, the address A of the buffer memory 10.
Is stored in the leftmost LED display device 6 in FIG.
Is displayed. In the same manner, each still image is supplied from the buffer memory 10 to each LED display device 6 while being controlled by the image memory control device 8.

Next, supply of a still image from the buffer memory 10 to the LED display device 6 will be described. Since the present invention aims to provide a device in which train passengers can view moving images by arranging still images that are sequentially operated in sequence, the LED display device 6 needs to perform intermittent display. The intermittent display is also disclosed in the above-mentioned three prior art patent publications, so the detailed description thereof will be omitted. However, the intermittent display of the present invention is a unique intermittent display not found in the conventional example. It is characterized by performing.

That is, in the present invention, the image memory controller 8 controls the buffer memory 10 to intermittently supply a still image to the LED display device as shown in FIG. Is set to t1 and the still image supply stop time is set to t2, intermittent display is performed such that a time relationship of 100t1 <t2 is satisfied.

The image memory control device 8 transmits a control signal (for example, a signal shown in FIG. 4) for controlling the operation of the buffer memory 10 to the buffer memory 10 via the signal line 12.
Upon receiving the control signal, the buffer memory 10 simultaneously supplies the still images stored at the respective addresses to the corresponding LED display devices 6 during the time t1. Thereby, the LED display device 6 simultaneously displays the respective still images.

Next, during the time t2, the buffer memory 10
Stops the supply of the still image to the LED display device 6. As a result, the LED display device stops displaying the still image, and the display screen becomes dark.

If this operation is continuously performed, the LED display device 6 performs a blinking display in which the LED display device 6 is turned on for the time t1 and darkened for the time t2. According to the applicant's experiments,
Although the relationship between t1 and t2 depends on various conditions, 200t1
= T2 to 1000t1 = t2, and a moving image with clear and smooth motion without blur was obtained. If t1 is less than or equal to 100t1 = t2 (that is, 100t1> t2), a satisfactory moving image could not be obtained. This is because, due to the afterimage effect of the human eye, if the lighting time of a still image of a certain frame is long, these two frames will be seen at the same time even when looking at the next frame, and the image will flow as if it were actually seen. This is probably because the image is blurred or appears as a multiple image.

In the above experimental example, the adjacent still image is 1 mm
This is a case where the still image can be visually recognized without blurring due to the movement even if the image is shifted. In that case, 60
In the case of km / H, the display device interval is 53c as described later.
Assuming that m, the optimum display time t1 at that time is t1 = (1/30) seconds × (1/530 mm).

The relationship between the display time and the display stop time described above differs depending on the running speed of the train, the amount of light emitted from the LED display device 6, the size of the display device 6, and the like. It has been found that the still image hardly blurs within the above-mentioned range, and can be viewed as a clearer still image.

FIG. 5 schematically shows the relationship between the train 4 and the plurality of LED display devices 6 installed in the tunnel 5 when the display time is selected as described above. It should be noted that the image is shown as being displayed before or after the train 5 passes, but this is merely a schematic diagram. Actually, an image is displayed only from the time when the head of the train 5 passes through the first LED display device 6 until the time when the train 5 passes.

The buffer memory 10 is used for controlling the intermittent display.
Of course, the same intermittent display is possible by intermittently supplying the power (power) of the LED display device so as to have the relationship shown in FIG.

Now, in order for a continuous still image to be visually recognized by the human eye as a moving image, 24 frames per second in the case of a movie, and 1 second in the case of the NTSC standard in the case of television. 30 frames, 1 for PAL standard
25 frames are required per second. Therefore, at least 24 frames / sec is required to obtain a normal moving image,
In the present embodiment, 30 frames / sec will be described as an example.

When the LED display device 6 is installed on the tunnel wall 5a of the train 4, the installation interval, the size of the display device 6, and the like will be described. The installation interval varies depending on the traveling speed of the train 4, and the size of the LED display device 6 varies depending on the facing distance between the train 4 and the wall surface 5a. (Table 1) shows the hourly speed, the second speed, and the installation interval of the train 4.

[0040]

[Table 1]

As can be seen from Table 1, the speed is 60 kph
m of the moving object (train 4) is 16.6 m at a second speed. Since 30 frames of still images must exist during this 16.6 m, the installation interval is 16.6 m / 30 = 53.
cm. Therefore, it is understood that the size of the LED display device 6 used in the horizontal direction is limited by the installation interval.

If the train passing speed at the place where the LED display device 6 is mounted is determined, the LE
The installation interval and size of the D display device 6 are determined. In the above example, the speed is 60 km / h, and the installation interval is 53 cm. Therefore, the size of the LED display device 6 may be about 50 cm or less in width (thus, it is desirable that the length in the vertical direction is 50 cm or less). However, since the distance from the window of the train 4 to this LED display device is usually only about 50 cm, in consideration of this, the LED display device 6 having a width of about 25 to 40 cm is suitable.

As can be understood from Table 1 when the speed of the train 4 is higher, the size of the LED display device 6 can be increased accordingly. If the distance from the LED display device 4a to the LED display device 6 is about 50 cm, the entire device may not be visible even if a very large LED display device is used. As described above, when the distance is 1 m or 2 m and the speed is high, the width of the LED display device 6 can be increased accordingly.

In the above description, one moving image (1
Still video signals which constitute a continuous operation and constitute one moving image content with one consistency) are stored in the image memory 7. However, in actual use, a plurality of moving image contents having different contents are stored. In some cases. This is because, for example, when a moving image is used for product promotion or advertisement, the contents of the moving image differ depending on the sponsor. Even if the contents of the moving images are different as described above, all of the contents of the moving images (hereinafter referred to as a program) are temporarily stored in the image memory 7.

One of the stored programs is supplied from the image memory 7 to the buffer memory 10 under the control of the image memory control device 8, and the LED display device 6 is driven intermittently and continuously. A working video is displayed.

FIG. 6 schematically shows a plurality of programs stored in the image memory 7. When a plurality of programs are stored in the image memory 7, for example, a still video signal used for advertisement of cosmetics is stored in the program address 01 as shown in FIG. Similarly, in the program address 02, for example, a still video signal used for advertisement of a passenger car is stored. By the way,
In the example shown in FIG. 6, a hamburger is stored in 03, a coffee is stored in 06, a whiskey is stored in 07, a cigarette is stored in 08, and an electronic still product is stored in 09. ing.

How the data is stored is arbitrary. For example, when the data is stored using the image input device 14, the following operation is performed. First, a predetermined frame, which is a still video signal related to cosmetics, is taken in from the image input device 14 and given an address 01 in the image memory 7 and stored. Next, a predetermined number of frames of still video signals relating to the passenger car are fetched from the image input device 14 and designated in the address 02 and stored in the image memory 7. Thereafter, the remaining still video signals are stored for a predetermined number of frames in the same procedure.

A list in which a plurality of programs shown in FIG. 6 are stored is called a program list. The program list can be confirmed on the monitors 13 and 15 if necessary.

The image memory control device 8 can usually be constituted by a personal computer. FIG. 7 shows a specific configuration of the image memory control device 8 when a personal computer is used. The image memory control device 8 includes a ROM 81 as a memory storing a control program, a central processing unit CPU 82, and a keyboard 8 for inputting control information.
3 and a mouse 84 in this example, which is an external input device.

The CPU 82 receives a detection signal from a detection device 85 for detecting that a train has approached the place where the LED display device 6 is installed. In this example, a sensor 85 for detecting that the tip of the train (driver's seat) has passed
Is installed on the side of the LED display device 6 closest to the tip of the train, and a signal that detects this passage is supplied to the CPU 82.

When the CPU 82 receives this detection signal,
The CPU 82 controls the buffer memory 10 to transmit the still video signal stored in the buffer memory 10 to the LED display device 6 via the signal line 12 in the above-described manner.

When the period during which the detection sensor 85 is operating elapses, that is, when the train passes, the CPU 82 sends a display end signal to the buffer memory 10 via the signal line 12, and the LED display device 6 displays the program list 01. The continuous operation display related to the still image signal of the cosmetic is ended.

When the transmission of the program list 01 is completed, the CPU 82 changes the program list from 01 to 0 this time.
Change to 2. As a result, the program list 02 stored in the image memory 7, in this example, a still image signal relating to the passenger car is sent to the buffer memory 10, and the contents of the buffer memory 10 are changed from cosmetics to image information of the passenger car.

When the detection sensor 85 detects that the next train has passed, the continuous operation video apparatus performs the same operation as described above, and enters a continuous display mode of another video. When the display operation is completed, the contents of the buffer memory 10 are rewritten from the program list 02 to the program list 03.

FIG. 8 is a flowchart showing the above operation.
become that way.

That is, in step S1, the contents of the program list 01 are stored in the buffer memory 10 as the initial mode. Next, in step S2, a signal from the detection sensor 85 indicating that the train has arrived is waited for. When the detection sensor 85 is turned on, the CPU 82 drives the buffer memory 10 intermittently in step S3. And step S4
When it is detected that the detection sensor 85 is turned off,
In step S5, the CPU 82 stops the operation of the buffer memory 10.

Next, when it is confirmed in step S6 that the video display mode is continued, the program list 01 is incremented by "1" in step S7, and the process returns to step S1 to wait for a similar video display operation. Becomes

When the video display mode ends, the video display processing program ends. As described above, since the program list is updated each time the train passes during the video display mode, the program of the video automatically displayed each time the train 4 passes can be rewritten. Therefore, the number of transmissions of each program provided to the passenger can be the same depending on the method of the transmission program.

In the above description, the program list is rewritten each time a train passes. However, the program list may be rewritten not every time a train passes, for example, every five passes, or the frequency of rewriting may be changed for each program. Good.

For example, if the cosmetics in the program list 01 are to be displayed three times in succession, a still video signal relating to the cosmetics is sent to the buffer memory 10 and "3" is designated as frequency data indicating the display frequency. When the frequency data becomes “0”, a program rewriting process is performed. At the same time, the frequency data of the next program is also specified.

In order to perform such processing, first, as shown in FIG. 9, program #N to be transmitted in step S1
In addition to (N = 1,...), The frequency data #M is input. Then, in step S8, the number of times the train 4 has passed is counted, and the same program is repeated until # M = 1. If # M = 1, the program #N is incremented and the frequency data #M in the new program is updated unless a display stop command is issued (step S7).
Then, the process returns to step S1.

From the above, the display frequency can be set for each program. For example, it is also possible to display the still image signal for the cosmetics of the program 01 three times in a row and the still image signal for the passenger car in the program 02 up to five times in a row.

Alternatively, it is possible to change the display frequency within a time period of one day. For example, if the program displays alcoholic beverages such as beer or whiskey, the frequency of display is increased after 5 pm to target the return time of office workers, and foods such as hamburgers In the case of a program that displays a kind of video, it is also possible to program such that the display frequency is changed according to the display time zone so that the display frequency is increased by focusing on the meal time zone. .

In order to change the display frequency of the display program under various conditions, it is necessary to change or rewrite data relating to the display frequency and the time zone.

FIG. 10 exemplifies a program list in which the display time zone and the display frequency are respectively taken into consideration. According to this example, for the cosmetics of the program list 01 and the passenger cars of the program list 02, the corresponding video is always displayed at a constant frequency regardless of the time zone, and the hamburger of the program list 03 is meal time from 11:00 to 13:00. The whiskeys and beers in the program list 07 are displayed concentratedly in the time period from 17:00 to 20:00.

FIG. 1 shows the determination of the time zone and the frequency.
0 is displayed on the monitor 15, for example, and the keyboard 83 is displayed.
The data of the time zone and the frequency are input using the mouse and the mouse 84.

The above display mode is an example in which only the time from when the train 4 arrives to when the train 4 passes is displayed.
In addition, for example, it is also possible to display for a predetermined time (for example, 3 seconds or 5 seconds) after the train 4 arrives. In short, the video display mode can be freely set by the transmission program.

The above description is about a method of creating a program list using the image input device 14 and directly storing the program list in the image memory 7. However, it is also possible to use a program list created in advance. For example, a card including a memory called an electronic card in recent years can be used. In this case, an electronic card storing the program list shown in FIG. 10 together with the corresponding still image signals for a plurality of frames is used. In this case, the image memory 7 can be substituted for the image memory 7 by being inserted into the image memory control device 8.

Although the above-described video display operation has been described in connection with the case where a smooth moving image is displayed, depending on the video expression, it is sometimes more effective to take an awkward movement. Video display by so-called limited enumeration is also conceivable. In such a case, instead of displaying still images slightly different from each other at 30 frames per second, a still image signal having a smaller number of frames, for example, 15 frames, is displayed at 30 frames per second. do it.

In order to realize the limited enumeration, the image memory 7 is controlled so that the still video signals of the image memory 7 in which the continuous still images are stored are simultaneously used by the plurality of LED display devices 6.

For example, the first still video signal of the image memory 7 is transmitted to consecutive addresses (for example, A and B) of the buffer memory 10. Thereby, the buffer memory 10
The same still video signal is transmitted to two adjacent LED display devices. The second still video signal (2
The third still video signal is sent to consecutive addresses (for example, C and D) in the buffer memory 10 without using the video signal of the frame.

In this way, an image is displayed with half the image information as that of a normal moving image, so that the image appears to be extremely awkward to human eyes, and a limited enumeration effect is exhibited.

When the number of frames is reduced to １ ／, the operation described above is performed. The number of frames can be reduced to 1/3 or 1/4, and video can be displayed by simultaneously supplying video signals of the same frame to three or four LED display devices simultaneously. If the CPU 82 is used as the control means as described above,
Various video expressions can be realized only by controlling the address of the image memory.

In the above description, an LED display device has been described as an example of the display device 6.
Liquid crystal display (LCD display) instead of ED display
May be used. There are two types of liquid crystal display devices, a reflective type and a transmissive type. In either case, a strobe can be used as a blinking light source. In the case of a transmission type liquid crystal display device, a strobe is used as a backlight, and in the case of a reflection type liquid crystal display device, a strobe is simply used as a lighting device.

FIG. 11 shows an embodiment of a video display device using the liquid crystal display device 6. Although the description of FIG. 11 that overlaps with FIG. 2 is omitted, in this example, a plurality of strobe lights 20 and the strobe lights 20 are used.
There is provided a strobe drive circuit 21 for driving the. An image blink control signal output from the image memory control device 8 via the signal line 12 is supplied to a strobe drive circuit 21, which controls blinking of the strobe light 20.

Even when the strobe light 20 is used, the flashing duty ratio thereof is the same as that of the LED display device. Therefore, the flash drive circuit 21 responds to the flashing control signal represented by the duty ratio shown in FIG. Works.

In FIG. 11, one strobe light 20 is provided corresponding to each of the liquid crystal display devices 6.
The size of the liquid crystal display device 6 to be used is 30 to 50 cm in width.
In the case of the size of the order, two or more liquid crystal display devices, for example, 2
One liquid crystal display device can be shared so that one strobe light 20 is used.

Next, a further modification of the above embodiment will be described.

First, in the above-described case, a still image signal which is a continuous operation for the passengers on the train 4 is supplied to each display device 6. On the other hand, a still image video signal that looks completely still to the passenger can be supplied to each display device 6. In this case, exactly the same video signal is stored in the image memory 7. If the video signal is simultaneously supplied to the display device 6 under the same conditions as in FIG. 5, it can be easily understood that a completely still video is displayed outside the vehicle window as shown in FIG.

Advantages of supplying such a still image include, for example, a notice given by a business owner of a mobile body to a passenger (only text information or a combination of text information and a picture).
This is because, in the case of similar notices provided by various public institutions, it is easier for passengers to interpret the contents if they are still images. This still image may slightly move in the direction opposite to the traveling direction of the train.

Second, a train has been described as a moving object.
In addition, an elevator, escalator, moving sidewalk, amusement park ride, road, and the like may be used. FIG. 13 shows a case in which the present invention is applied to an elevator, in which a plurality of display devices 6 are arranged in a vertical line in a cavity side wall 70 while keeping a constant interval (see FIG. 14). Elevator 7
By supplying the image display contents in reverse with the up and down movement of 2, the person riding the elevator 72 can see a continuous image or a still image whether climbing or descending. For other contents, refer to the above-described embodiment.

FIG. 15 shows that a person riding on the escalator 74 can enjoy a continuous image or a still image. A plurality of display devices 6 are installed on the wall along the getting on and off of the escalator 74. Then, the video timing is adjusted according to the traveling speed.

Third, in addition to commercial images for advertisements and advertisements, the image sources to be displayed include texts such as notices of mobile business entities such as subways and notices of public institutions as described above. A video source mainly based on information is conceivable.

Fourth, in the example of FIG.
Is provided on the video signal supply device 9 side, but a configuration in which the buffer memory 10 is incorporated in each of the display device 6 sides may be adopted.

In this case, only a single signal line such as a coaxial cable or an optical cable from the image memory 7 needs to be installed in a tunnel or the like. Each display device 6
The required information is transmitted and stored by packet communication. Control signals (display timing signal, power control signal, etc.) for each display device 6 can also be transmitted from the video signal supply device 9 side using the same cable line.

Fifth, it is assumed that the speed of the moving object is constant. However, the present invention can be applied to other cases. In that case, if the traveling speed is detected and the display timing on each display device 6 is controlled based on the detection signal, a continuous video or a still video can be viewed.

Sixth, when the video display device according to the present invention is applied in a tunnel, the installation location does not matter. It may be near the entrance of the tunnel or in the center of the tunnel.
It is also possible to install at multiple locations in the same tunnel. In this case, the video can be displayed in conjunction with each other, or the video can be displayed independently. Further, a network for displaying images may be constructed between stations. Can respond to emergencies.

[0088]

As is apparent from the above description,
According to the present invention, the following effects can be obtained.

(1) First, a continuous moving image or a still image can be viewed from a moving vehicle, and the continuous image becomes a multiplex image by regulating the relationship between the image display time and the stop time. It can be prevented from being seen. This allows you to see clear and beautiful moving images and still images. In other words, natural and clear images can be provided.

In addition, since different video contents can be programmed arbitrarily, when the present invention is used as a commercial video or the like, an extremely effective advertisement effect can be obtained.

(2) In the present invention, since a random access memory for storing continuous still picture video signals is provided, it is possible to cope with a plurality of video displays only by rewriting the stored contents. As described above, it is extremely easy to change the content of a still image, and it is possible to deal with a plurality of video sources without having to manually change the still image as in the related art.
Since the change of the image can be performed at once by the center side, the security can be ensured even when applied to a place such as a tunnel.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing an embodiment when the present invention is used in a tunnel.

FIG. 2 is an explanatory diagram showing details of an embodiment when the present invention is applied to a continuously operating video display device.

FIG. 3 is an explanatory diagram showing a vehicle window state when a still image is displayed on the LED display device.

FIG. 4 is an explanatory diagram illustrating a relationship between a display period of a still image and a display stop period according to the embodiment of the present invention.

FIG. 5 is a schematic diagram showing a relationship between a train traveling in a tunnel and an LED display device.

FIG. 6 is an explanatory diagram illustrating details of contents of a memory according to the embodiment of this invention;

FIG. 7 is an explanatory diagram showing a main part related to control of the present invention.

FIG. 8 is a flowchart illustrating an example of control according to the embodiment of the present invention (part 1).

FIG. 9 is a flowchart illustrating an example of control according to the embodiment of the present invention (part 2).

FIG. 10 is an explanatory diagram illustrating details of contents of a memory according to the embodiment of this invention;

FIG. 11 is an explanatory diagram showing details when a liquid crystal display device according to another embodiment of the present invention is used.

FIG. 12 is a conceptual diagram showing a relationship between a passenger and a stationary video display apparatus facing directly according to another embodiment of the present invention.

FIG. 13 is a conceptual diagram (front view) showing the relationship of the video display device when the moving object is an elevator.

FIG. 14 is a side view of FIG. 13 showing the relationship of the image display device when the moving object is an elevator.

FIG. 15 is a conceptual diagram showing the relationship of the video display device when the moving object is an escalator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Continuous operation image display apparatus, 2 ... Rail, 3 ...
..Traveling paths, 4, 4a, moving bodies and windows, 5, 5a
..Tunnel and wall surfaces, 6, 6A, 6B, 6C, 6D,
6E: LED display device and still image, 7: Image memory, 8: Image memory control device, 9: Video signal supply device, 10: Buffer memory, 11, 12,
..Transmission lines, 13, 15 monitor, 14 image input device, 20 strobe light, 21 strobe light drive circuit, 81 read-only memory (ROM), 82 ..Central processing unit (CPU), 83
... keyboard, 84 ... mouse, 85 ... detection sensor

Continuing from the front page (72) Inventor Hirofumi Maruyama 4-14-1, Asahicho, Atsugi-shi, Kanagawa Prefecture Inside Sony Marketing Inc. (72) Inventor Hiroshi Choko 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony F term in reference company (reference) 5C080 AA07 AA10 BB05 DD13 EE17 GG01 GG08 JJ02 JJ04 JJ05 JJ06 JJ07 KK38 KK40

Claims (12)

[Claims] 1. A plurality of display devices arranged in a line at predetermined intervals in a portion that can be viewed from a moving body carrying a person, and a still image video signal is supplied to the plurality of display devices. A video signal supply device for intermittently controlling the plurality of display devices to operate simultaneously and controlling the display time of the still image video signal displayed on the plurality of display devices to be shorter than the video display stop time. An image display device comprising a display control means. 2. The video signal according to claim 1, wherein the still image signal is slightly different in time with respect to each display device, and is a continuous image signal when viewed from the moving object. 2. The image display device according to 1. 3. The video signal according to claim 1, wherein the video signal is the same video signal for each of the display devices, and is a video signal which becomes a still video as a whole even when viewed from the moving object. The video display device according to claim 1. 4. The video display device according to claim 1, wherein the display device is a two-dimensional display device in which light emitting diodes are arranged in a matrix. 5. The video display device according to claim 1, wherein said display device is a transmissive liquid crystal display device, and said intermittent display control means is a backlight. 6. The video display device according to claim 1, wherein said display device is a reflection type liquid crystal display device, and said intermittent display control means is a strobe light. 7. The image display device according to claim 5, wherein said backlight is a strobe light. 8. A step of creating a plurality of still images that are projected sequentially and operate continuously, a step of storing the plurality of still images created in Step 1 in a storage device, and a step of storing each of the plurality of stored still images. In the video display method having the step of intermittently displaying on a display device corresponding to the above, the ratio of the video display time t1 and the display stop time t2 is set to 100t1 <t2. Video display method. 9. The still image signal is slightly different in time from a display device for displaying each image signal, and when viewed from a moving object carrying a person, the whole image is a continuous operation. The video display method according to claim 8, wherein the video signal is a video signal. 10. The video signal according to claim 1, wherein the still video signal is exactly the same video signal for each display device, and is a video signal which is a still video as a whole even when viewed from the moving object. The video display method according to claim 8, wherein 11. A plurality of liquid crystal display devices arranged in a line at predetermined intervals in a portion that can be seen from a moving body on which a person runs, and a still image video signal is supplied to the plurality of liquid crystal display devices. And a light source for causing the plurality of liquid crystal display devices to perform a display operation; and a light source blinking control unit for controlling blinking of the light source. An image display device comprising a random access memory (RAM) for storing the still image image signal. 12. The video display device according to claim 11, wherein said random access memory stores a plurality of programs for a video signal for displaying a video.