KR100772087B1 - Video display apparatus and video display method - Google Patents

Abstract

According to an embodiment of the present invention, a video display device supplies a plurality of display devices 6 arranged in a line at predetermined intervals to a position visible to a passenger on a moving object, and supplies still image video signals to the plurality of display devices. And an intermittent display control means for controlling the still image video signal display time and the image display stop time at an interval for operating the video signal supply device 9 and the plurality of display devices at the same time to obtain a clear image. It is configured to include. When viewed from the moving object, a video signal indicating continuous operation as a whole video is supplied to each display device. Since the image is given as an electric signal, the contents of the image can be changed by rewriting the contents of the image memory. Therefore, any image can be displayed, and a plurality of images can also be displayed. The memory device 7 also stores a still picture video signal composed of a plurality of programs having different contents. The program is sequentially selected under the control of the control means 8, and a still picture video signal corresponding to the selected program is supplied to the display device. Therefore, a plurality of images having different displayed contents may be changed and displayed each time the train passes through the display device, for example.

Description

Video display apparatus and video display method

1 is an explanatory diagram showing a method in which an image display device according to the present invention is used in a tunnel.

Fig. 2 is a block diagram showing an embodiment when the present invention is applied to an image display apparatus for displaying a continuous operation image.

3 is an explanatory diagram showing a state in which a still image is displayed on a window by an LED display device.

4 is a diagram showing a relationship between a still image display period and a display pause period in the embodiment according to the present invention.

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

6 is an explanatory diagram showing details of a memory according to an embodiment of the present invention.

7 is a block diagram for explaining a main part related to the control operation according to the present invention.

8 is a flowchart used to explain a method of displaying an image under control according to an embodiment of the present invention.

9 is a flowchart used to explain another method of displaying an image under control according to the embodiment of the present invention.

10 is an explanatory diagram showing the details of the memory according to the embodiment of the present invention.

Fig. 11 is a block diagram showing an image display device using a liquid crystal display device (LCD) according to still another embodiment of the present invention.

12 is a conceptual diagram showing a relationship between a stationary image display apparatus facing a passenger according to still another embodiment of the present invention.

13 is a conceptual diagram (front view) showing the relationship between the moving object and the image display apparatus when the moving object is an elevator.

FIG. 14 is a side view of FIG. 13 illustrating a relationship between a movable body and an image display apparatus when the movable body is an elevator.

15 is a conceptual diagram illustrating a relationship between a moving object and an image display apparatus when the moving object is an escalator.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an image display apparatus which can view an image on which a person riding in a moving object, such as a train traveling on a rail, an elevator, or the like, moving or moving a person as a continuous motion image (movie) or still image.

Until now, this kind of image display apparatus, for example, the image display apparatus for continuous motion image which a passenger can see a display image as a moving image, is lined up on the wall surface according to the driving direction of the traveling path which a passenger rides and a moving object drives. Are arranged at predetermined intervals, and when a still picture can be viewed as a whole picture, a plurality of still picture display devices capable of displaying still pictures as a continuous picture, and a plurality of these still pictures can be simultaneously flashed and lit. It consists of a flashing lighting device.

Japanese Laid-Open Patent Publication No. 5-27197 (Reference 1) discloses a configuration in which a plurality of still pictures are arranged at a predetermined interval on a wall along a traveling direction of a traveling path to sequentially display a continuous operation.

In addition, Japanese Patent Laid-Open No. 2-201489 (Ref. 2) discloses a technique in which a video signal is displayed by a display device using an optical fiber and the displayed video signal moves along a train.

In addition, Japanese Patent Laid-Open No. 7-104693 (Ref. 3) shows a display device using a light emitting display means or a character display device that can move at the same speed as a train so that still images can be arranged in a line and displayed as a video. Is disclosed. Japanese Patent Laid-Open No. 7-104693 discloses light emitting display means for emitting light for a short time.

Of the plural prior arts described above, in the technique disclosed in the above-mentioned reference 1, when an image indicating continuous operation is changed, the still image must be replaced manually. This task is not only cumbersome and risky. It is inconvenient for the user. In the case of displaying such images in a tunnel, it is impossible to change the contents of a still image for each train because there is a risk in changing the contents of the still image.

The technique disclosed in Reference 2 aims at a mode in which display characters move, such as all-optical new tape. However, the prior art disclosed in Reference 2 does not disclose a technique for allowing a passenger to view a moving picture by supplying a continuous still picture sequentially.

In addition, according to the prior art disclosed in Reference 3, a problem arises in that the traveling speed of a train must always be detected for character display. In addition, Reference 3 only describes that the light emitting display means can emit light for a short time when displaying a moving image. However, Reference 3 does not specifically describe or present the light emission time of the light emitting display means. It has been found that the light emission time of the light emitting display means is an extremely important factor in realizing a more natural and clear continuous motion image or a still image which appears to be stationary by the viewer (passenger).

According to the present invention, a series of still images, which are image sources indicating continuous operation, can be easily changed in a short time, and image signals according to a plurality of programs having different displayed contents can be displayed according to a desired schedule, It is an object of the present invention to provide an image display device that allows passengers to view natural and clear continuous motion images or still images.

According to the present invention, there is provided a video display apparatus, comprising: a plurality of display devices arranged in a line at a predetermined interval at a position visible to a passenger in a moving vehicle; A video signal supplying device for supplying a still picture video signal to the plurality of display devices, and simultaneously operating the plurality of video display devices simultaneously; And intermittent display control means for causing a display time of the still picture video signal displayed on a plurality of display devices to be shorter than a video display stop time. An image display device is provided.

According to another aspect of the present invention, in the video display method (video display method) applied to a plurality of display devices arranged in a line at a predetermined interval at a position that can be seen by a passenger on the moving object, a continuous operation is performed Creating a plurality of still images sequentially displayed for display; storing the plurality of still images created in the previous step in a memory device; and displaying the plurality of stored still images respectively. And intermittently displaying, wherein the intermittently displaying comprises satisfying a relationship of 100t1 < t2 when t1 is an image display time and t2 is a display stop time. An image display method is provided.

According to still another aspect of the present invention, there is provided a video display device, comprising: a plurality of liquid crystal display devices arranged in a row at a predetermined interval at a position visible to a passenger in a moving body. A video signal supply device for supplying a still image video signal to the plurality of liquid crystal display devices, a light source for operating the plurality of liquid crystal display devices, and a light source flicker control means for controlling the blinking of the light source. and a light source flashing control means, wherein the video signal supply device comprises a random access memory (RAM) for storing the still picture video signal.

According to another aspect of the present invention, in the image display device, a plurality of display devices (arranged in a line at a predetermined interval at a position that can be seen by a passenger on the moving object) and the plurality of display devices A still picture video signal memory means for supplying a still picture video signal to the controller; control means for controlling the still picture video signal memory means; A detection means for detecting whether or not the display device is located at the installed position, and an illumination means for intermittently displaying the plurality of display devices, wherein the still picture video signal is included. The memory means stores a still picture video signal composed of a plurality of programs having different contents. G is selected under the control of said control means, a still picture video signal for the selected program, the video display device, characterized in that adapted to be supplied to the display device is provided.

According to another aspect of the present invention, in the image display device, a plurality of display devices arranged in a line at a predetermined interval at a position that can be seen by a passenger on the moving object, and a still image image on the plurality of display devices A still picture video signal memory means for supplying a signal, control means for controlling the still picture video signal memory means, detection means for detecting whether or not the moving object is located where the plurality of display devices are installed; And a lighting device for intermittently displaying the plurality of display devices, wherein the still picture video signal memory means stores a still picture video signal composed of a plurality of programs having different contents, and wherein the program stores the Still image images selected under the control of a control means and supplied to the plurality of display devices It discloses a video display device, characterized in that is configured to be changed by at least said program unit (unit) under the control of the control means.

According to another aspect of the present invention, in the image display device, a plurality of display devices arranged in a line at a predetermined interval at a position that can be seen by a passenger on the moving object, and a still image image on the plurality of display devices A still picture video signal memory means for supplying a signal, a control means for controlling the still picture video signal memory means, and an illumination device for intermittently displaying the plurality of display devices. The video signal memory means stores a still picture video signal composed of a plurality of programs having different contents, and the number of images continuously displayed on the display device is set for each program under the control of the control means. An image display apparatus is provided.

According to another aspect of the present invention, in the image display device, a plurality of display devices arranged in a line at a predetermined interval at a position that can be seen by a passenger on the moving object, and a still image image on the plurality of display devices A still picture video signal memory means for supplying a signal, a control means for controlling the still picture video signal memory means, and an illumination device for intermittently displaying the plurality of display devices. The video signal memory means stores a still picture video signal corresponding to a plurality of programs having different contents, and each of the programs stores data indicating a display frequency for a display time period. And the control means selects the table within the display time zone based on the data representing the display frequency. A video display device, characterized in that arranged to control the number of the respective programs which are displayed on the apparatus.

The above objects of the present invention will become more apparent from the preferred embodiments described below with reference to the accompanying drawings.

Embodiments of the present invention are described in detail below with reference to the drawings. In the following embodiment, the present invention is applied to a continuous motion image display apparatus in which a passenger can view a continuous motion image.

1 is a schematic view showing an embodiment to which the present invention is applied. As shown in FIG. 1, the continuous motion image display apparatus 1 includes a wall of a tunnel 5 in which a track 3 is formed so that a passenger on a moving body traveling on a track 3 on which a rail 2 is placed can be seen. And a plurality of image display devices 6 arranged in a line at predetermined intervals at the same position as 5a). In the present embodiment, the display device 6 is composed of a two-dimensional display device (LED display device) in which a plurality of LEDs are arranged in a matrix (two-dimensional image).

FIG. 2 is a block diagram showing the overall configuration of a continuous motion image display device 1 for supplying a still image signal to a LED display device 6, each representing a continuous motion image. In FIG. 2, the same reference numerals are used for the same parts as in FIG. 1, and description thereof is omitted.

In FIG. 2, the continuous operation image display apparatus 1 includes an image memory 7 for supplying respective still image signals to the LED display device 6, and an image memory control for controlling the image memory 7; And an image signal supply device 9 constituted by an apparatus 8. In addition, the continuous operation image display device 1 is located between the image signal supply device 9 and the LED display device 6, and the still image signal intermittently from the image memory 7 to the plurality of LED display devices 6. It includes a buffer memory 10 for supplying.

As the image memory 7, a random access memory (RAM) or the like can be used. A still picture video signal sequentially indicating a continuous motion picture image supplied from the video signal supply device 9 using the picture memory 7 is a stepwise image signal composed of a video signal indicating a moving picture in which operations are continuously performed, that is, a moving picture. It is a video signal. Therefore, the still picture video signal described above is a signal representing a frame still picture like a movie film.

As shown in FIG. 2, the first monitor 13, the second monitor 15, and the image input device 14 are connected to the video signal supply device 9. The signal line 12 from the video signal supply device 9 is connected to the buffer memory 10, thereby controlling the operation of the buffer memory 10. As shown in FIG.

In this configuration of the continuous operation image display apparatus 1, the manner in which the still image signal is stored in the image memory 7 is described below. As a still image which shows a continuous motion image sequentially, when a still image 6A, 6B, 6C, 6D, 6E is seen from the other window 4a of the train 4, a rabbit jumps as shown in FIG. Still images 6A, 6B, 6C, 6D, and 6E are shown.

First, as shown in Figs. 2 and 3, a still image 6A representing a rabbit before leap is input from the image input device 14 to the image memory control device 8, and the still image 6A is a second image. It is confirmed by the monitor 15. If it is determined that the still picture 6A should be used, the address of the picture memory 7 is designated and the still picture 6A is stored in the picture memory 7.

Next, a still image 6B showing the next operation of the rabbit is supplied from the image input device 14 to the image memory control device 8, and the still image 6B is confirmed by the second monitor 15. FIG. . If it is determined that the still image 6B should be used, another address of the image memory 7 is designated, and the still image 6B is stored at the designated address of the image memory 7. In this manner, the still images 6C, 6D, and 6E are sequentially stored at designated addresses of the image memory 7.

Therefore, the five still images 6A, 6B, 6C, 6D, and 6E stored in the image memory 7 can be checked simultaneously, for example, through the multi-display type monitor 13.

The present invention has been described so far using, for example, five still pictures 6A, 6B, 6C, 6D, 6E. In the practical application of the present invention, however, when 30 still images are displayed per second as the most common example, for example, 90 still images are required to display for 3 seconds. In order to simplify the description, the present invention will be described using the five still images 6A, 6B, 6C, 6D, and 6E described above.

A telecine can be considered as the image input device 14 used for inputting a still image to the image memory control device 8. Telecine is a device for converting an image of each frame of an ordinary movie film into a television signal. Telecine can convert a still picture of 24 frames per second into a television signal of 30 frames per second.

Since the advertisement screen is usually photographed with a silver salt film, telecine is used as the image input device 14. When the advertisement picture is taken by a video camera, a video tape recorder (VTR) having a still picture reproducing function is used as the image input device 14. In addition, when the original still image is captured by the VTR dedicated to animation creation, the VTR itself functions as the image input device 14. When the moving picture to be finally used is determined, the moving picture reproduced by the VTR is supplied to the image memory control device 8 as it is, and a frame synchronizing signal included in the reproduced video signal is detected and stored in the image memory 7 every frame. do.

The five still pictures 6A, 6B, 6C, 6D, and 6E stored in the image memory 7 are thus supplied to the buffer memory 10 via the transmission line 11 under the control of the image memory control device 8. The buffer memory 10 includes addresses A, B, C, D, and E corresponding to each LED display device 6. Therefore, the still image 6A supplied from the image memory 7 is stored in the address A of the buffer memory 10, so that the still image 6A is the most of the LED display device 6 shown in FIG. It is displayed on the right display device 6. Similarly, each still image is sequentially supplied from the buffer memory 10 to each LED display device 6 under the control of the image memory control device 8.

The manner in which the still image is supplied from the buffer memory 10 to the LED display device 6 will be described next. According to the present invention, the LED display device 6 intermittently displays a still picture because an object of the present invention is to provide a video display device that allows passengers on a train to view a moving picture by arranging still pictures that sequentially display continuous motion pictures. Must be marked The intermittent display is disclosed in Japanese Laid-Open Patent Publication Nos. 5-27197, 2-20189 and 7-104693, which are examples of the above-described prior art, and thus will not be described in detail. The intermittent display of the present invention differs from the prior art in that it is characterized by performing unique intermittent display.

That is, according to the present invention, the image memory control device 8 controls the buffer memory 10 so that the still picture is intermittently supplied to the LED display device 6 as shown in FIG. If the still picture supply time (display time) is t1 and the still picture supply stop time is t2, the LED display device 6 intermittently displays the still picture so as to satisfy the time relationship indicated by 100t1 < t2.

The image memory control device 8 transmits a control signal (i.e., the signal shown in FIG. 4) for controlling the operation of the buffer memory 10 to the buffer memory 10 via the signal line 12. As shown in FIG. In accordance with the supplied control signal, the buffer memory 10 simultaneously supplies the still images stored at each address to the corresponding LED display device 6 for a time t1. Therefore, the LED display device 6 simultaneously displays each still picture.

During the next time t2, the buffer memory 10 stops supplying the still image to the LED display device 6. Therefore, the LED display device 6 stops displaying the still image, so that the screen of the LED display device 6 becomes dark.

If the above operation is performed continuously, the LED display device 6 lights up for a time t1 and becomes dark for a time t2, so that a blinking display is possible. According to an experiment conducted by the applicant of the present invention, the most natural, clear and smooth video can be obtained with respect to the time relationship between t1 and t2. is at t2. If less than 100t = t2 (that is, 100t1> t2), a satisfactory moving picture cannot be obtained. The reason is explained in the following. That is, if the display time of a still image of a frame is long due to human afterimage, when the observer sees the still image of the next frame, the observer has no choice but to view the still image of both frames. In practice, the displayed image is blurred or can only be seen as multiple images.

In the example of the above-mentioned experiment, even if the next still image is displayed 1 mm apart, the still image is set to a case where the still image can be visually confirmed by the observer without being blurred by the arrangement of the next still image. In that case, when the display device spacing is 53 cm at 60 km / H, the optimum display time t1 obtained at that time can be represented by t1 = (1/30) seconds x (1/530 mm).

Although the optimum value of the relationship between the display time and the display stop time described above is changed by conditions such as the traveling speed of the train, the intensity of the light emitted from the LED display device 6, the size of the LED display device 6, etc. Studies have shown that if the optimum value falls within the above-mentioned range, the still picture is hardly blurred and can be observed as a clearer still picture.

FIG. 5 is a schematic diagram schematically showing 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. Although FIG. 5 shows that the still picture is displayed before or after the train 4 passes through the tunnel 5, this is shown to more clearly understand the present invention. In practice, the still image is displayed while the train passes through the first LED display 6 after the head of the train 4 passes through the first LED display 6.

In the above embodiment, the output of the buffer memory 10 is controlled so that the LED display device 6 displays a still image intermittently, but the present invention is not limited thereto, and power (power) is applied to the LED display device 6. By supplying the intermittently, the same intermittent display may be made possible by satisfying the relationship shown in FIG.

Observers need 24 frames per second for movies, 30 frames per second for NTSC standards, and 25 frames per second for PAL standards to visually identify continuous still images as video. do. Therefore, at least 24 frames per second are required to obtain a normal video. In the present embodiment, the present invention will be described taking the case of 30 frames per second as an example.

The arrangement interval of the LED display device 6 and the size of the LED display device 6, which are required when the LED display device 6 is installed on the tunnel wall 5a through which the train 4 passes, will be described below. The arrangement interval of the LED display device 6 depends on the traveling speed of the train 4, and the size of the LED display device 6 depends on the distance between the train 4 and the tunnel 5a facing each other. The following Table 1 shows the speeds and initial speeds of the train 4 and the installation intervals of the LED display device 6.

Per hour (km) Speed (m) Thickness (cm) 40 11.1 37 60 16.6 53 80 22.2 74 100 27.7 92 120 33.3 111 150 41.6 139 200 55.5 185

From the study of Table 1, it can be seen that the initial velocity of the moving body (train 4) at 60 km / h is 16.6 m. Since there should be 30 frames of still images in 16.6m, the distance between the LED display devices 6 is given as 16.6m / 30 = 53cm. Therefore, the lateral size of the LED display device 6 used is limited by the above-described spacing.

When the passing speed of the train at the position where the LED device 6 is installed is determined, the interval at which the LED display device 6 is installed and the size of the LED display device 6 are determined. In the above-described embodiment, since the hourly speed is 60 km and the interval is 53 cm, the size, that is, the width of the LED display device 60 should be smaller than approximately 50 cm (hence the height is preferably 50 cm or less). However, considering that the distance between the window 4a of the train 4 and the LED display device 6 is usually about 50 cm, the width of the suitable LED display device 6 is in the range of about 25 to 40 cm.

It can be seen from Table 1 that the size of the LED display 6 increases with increasing speed of the train 4. If the distance between the window 4a of the train 4 and the LED display device 6 is approximately 50 cm, the entire still image may not be visually confirmed even by a fairly large LED display device. When the above-mentioned distance is 1m or 2m and the speed of the train 4 is fast, the width of the LED display device 6 may increase as described above according to the increased distance and the increased speed.

Still picture signals (contents corresponding to the video) which sequentially indicate the continuous operation constituting one video are stored in the image memory 7 as described above, but in reality, contents of a plurality of video having different contents are stored. It is often stored in the image memory 7. When a video is used for product promotion or advertising, for example, the content of the video depends on the sponsor. When the contents of the moving images are different as described above, the contents of these moving images (hereinafter referred to as programs) are temporarily stored in the image memory 7.

One of the plurality of 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 intermittently displays the continuous operation image.

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, as shown in Fig. 6, for example, still image video signals used for cosmetic advertising are stored in the program address 01. Similarly, the still picture video signal used for the automobile advertisement is stored in the program address 02. Thus, in the example shown in FIG. 6, the still picture video signal used for the hamburger advertisement is stored in the program address 03, and the still picture video signal used for the coffee advertisement is stored in the program address 06, whiskey, beer. The still picture video signal used for advertisement is stored in the program address 07, the still picture video signal used for the tobacco advertisement is stored in the program address 08, and the still picture video signal used for the advertisement of the electric appliance is the program address (09). Accumulate).

Although the manner in which the still image video signal is stored in the program is arbitrary, the still image video signal is stored in the program address by using the image input device 14 as follows.

First, a predetermined number of frames of still image video signals relating to cosmetics are read from the image input device 14 and stored in the program address 01 of the image memory 7. Then, a predetermined number of frames of the still picture video signal for the vehicle are read from the picture input device 14 and stored in the program address 02 of the picture memory 7. The remaining number of still picture video signals of the predetermined number of frames are sequentially stored in the program address of the picture memory 7 according to the same procedure.

The plurality of program lists stored as shown in FIG. 6 are called program lists. The program list can be visually confirmed by the monitors 13 and 15 if necessary.

The image memory control device 8 may be formed in a personal computer normally. Fig. 7 shows in block form a specific configuration of the image memory control device 8 formed in the personal computer. As shown in Fig. 7, the image memory control device 8 includes a read only memory (ROM) 81, a central-processing unit (CPU) 82, and a keyboard for inputting control information. And an external input device, in this example a mouse 84.

The detection device 85 is used to detect whether the train 4 approaches the position where the LED display device 6 is installed. The detection signal of the detection apparatus 85 is input to the CPU 82. In the above example, the detection device 85 may be a detection sensor that detects whether the tip portion (driving magnet) of the train 4 passes through the LED display device 6. The detection sensor 85 is installed on the side of the LED display device 6 near the tip of the train. The detection signal that detects that the train 4 passes through the LED display device 6 is supplied to the CPU 82.

    When the CPU 82 receives the detection signal, the CPU 82 causes the buffer memory such that the still picture signal stored in the buffer memory 10 is supplied to the LED display device 6 via the signal line 12 as described above. To control (10).

When the time zone during which the detection sensor 85 is operating passes, that is, when the train 4 passes the LED display device 6, the CPU 82 sends a display end signal to the buffer memory 10 through the signal line 12. As a result, the LED display device 6 finishes displaying the continuous operation on the still picture video signal of the cosmetic product stored in the program list 01.

When transmission of the still picture video signal to the program list 01 ends, the CPU 82 changes the program list 01 to the program list 02 at this time. Therefore, the program list 02 stored in the image memory 7, the still image video signal relating to the vehicle in this example, is sent to the buffer memory 10, and the contents of the buffer memory 10 are stored in the image information on the cosmetics. The image information is changed to.

When the detection sensor 85 detects that the next train 4 passes through the LED display device 6, the continuous motion image display device repeats the same operation as described above to enter the continuous display mode of another image. When the display operation ends, the contents of the buffer memory 10 are corrected from the program list 02 to the program list 03.

8 is a flowchart showing the above-described operation.

Referring to Fig. 8, following the start of the operation in step S1, the contents of the program list 01 are stored in the buffer memory 10 as the initial mode. In the next detection step S2, it is determined whether the detection sensor 85 has detected the arrival of the train 4. When the detection sensor 85 is turned on, that is, when the detection sensor 85 detects the arrival of the train 4 (when YES is indicated in the determination step S2), the control proceeds to step S3. In step S3, the buffer memory 10 operates intermittently under the control of the CPU 82. When the detection sensor 85 is off, that is, when the arrival of the train 4 has not yet been detected (the detection sensor 85 indicates NO in the determination step S2), control proceeds to step S2. Then, step S2 is repeated until the detection sensor 85 is turned on. When the detection sensor 85 is turned off by indicating YES in the determination step S4, the control proceeds to step S5, and the operation of the buffer memory 10 ends under the control of the CPU 82. In the next determination step S4, it is determined whether the detection sensor 85 is on or off.

In the next determination step S6, it is determined whether the image display mode is continuing. If the image display mode is continued by displaying NO in decision step S6, then control proceeds to step S7 to increase the program list 01 by " 1 ". Control returns to step S1, where the continuous operation video display device is placed in the same video display operation standby state.

When the video display mode ends by indicating YES in the determination step S6, the video display processing program ends. Since the program list is updated every time the train 4 passes the LED display 6 during the image display mode, the display program can be automatically changed every time the train 4 passes the LED display 6. . Thus, depending on the manner in which the program to be dispatched is programmed, the number of dispatches of each program provided to the passenger can be made equal.

As described above, the program list is changed each time the train 4 passes through the LED display device 6, but the present invention is not limited thereto, and the program list is not limited to the program list. Instead of being changed every time it passes, the train 4 may be changed every time it passes through the LED display 6. In addition, the frequency with which the program list is changed may vary for each program.

For example, when the still image is to be displayed three times consecutively for the cosmetics in the program list 01, the frequency at which the still image video signal for the cosmetics is transmitted to the buffer memory 10 and the frequency of the program list is displayed. "3" is designated as the data. When the frequency data is " 0 ", the program is changed. At the same time, the frequency data of the next program can also be specified.

In order to execute the above-described processing, the flowchart of the next step shown in FIG. 9 must be executed. Referring to Fig. 9, following the start of the operation, frequency data #M is input in addition to the program #N (N = 1, 2, ...) transmitted in step S1. Then, in the determination step S8, the number of trains 4 passing through the LED display device 6 is counted, and the same program is repeated until # M = 1. If #M = 1 is satisfied by indicating YES in decision step S8, then control proceeds to the next decision step S6 to determine whether the video display mode has ended. If the image display mode is not terminated by indicating NO in the decision step S6, then control proceeds to step S7 to increase the program list #N unless there is a display stop command, and the frequency data of the new program ( #M) is updated. The control then returns to step S1. Since the next step of the flowchart of FIG. 9 is the same as the flowchart of FIG. 8, description thereof is omitted.

Therefore, the display frequency can be set for every program. For example, the still image video signal for the cosmetics of the program list 01 can be displayed up to three times, and the still image video signal for the car of the program list 02 can be displayed up to five times in succession.

It is also possible to change the display frequency in the time zone of one day. For example, in the case of a program list displaying images of alcoholic beverages such as beer and whiskey, the frequency at which programs for the alcoholic beverages are displayed is increased at a time after 5 pm. In addition, in the case of a program list that displays images of foods such as hamburgers, the program list can be programmed so that the image display frequency of the hamburgers can be changed in accordance with the display time zone in such a way that the image display frequency of the hamburger increases.

In order to change the frequency of displaying the program list according to various conditions, the frequency of the program list to be displayed and the data for the time period in which the program list is displayed must be changed.

10 shows a program list obtained in consideration of the display time zone and frequency for displaying the program list. According to the above example, the image of the cosmetics of the program list 01 and the image of the car of the program list 02 are always displayed at a predetermined frequency regardless of the time zone. In addition, the image of the hamburger in the program list 03 is displayed with a high frequency in the time zone between 11 am and 1 pm. Also, images of whiskey and beer in the program list 07 are displayed with high frequency in the time zone between 5 pm and 8 pm.

Once the time zone and the display frequency are determined, the image shown in FIG. 10 can be displayed on the monitor (display section) 15 so that the user can display the display time zone and display frequency using the keyboard 83 and the mouse 84 (FIG. 7). You can enter data representing.

In the above example, the time zone and the display frequency during the passage of the train 4 after passing through the LED display device 6 are displayed on the monitor 5, but the present invention is not limited to the image display mode described above. The time zone and the display frequency may be displayed on the monitor 5 for a predetermined time (for example, 3 seconds or 5 seconds) after the train 4 arrives. In summary, the image display mode can be freely set in accordance with the program list to be transmitted.

In the above description, the program list is created by the image input device 14 and stored directly in the image memory 7, but the present invention is not limited to this, and a program list prepared in advance may be used. For example, a card having a built-in memory called "electronic card" can be used as a list of previously prepared programs. In this case, an electronic card which stores the program list shown in Fig. 10 together with the still picture video signals of the corresponding plurality of frames is used. When the electronic card is inserted into the slot of the image memory control device 8, the image memory 7 is replaced with the electronic card.

In the above description, the case where a smooth moving image is displayed by the image display operation has been described. However, the present invention is not limited thereto, and a more effective image expression may be obtained by intentional awkward operation. That is, the video may be displayed by so-called limited-animation. In this case, slightly different still pictures of 30 frames per second are not displayed, but slightly less, for example, 15 still pictures are displayed at 30 frames per second.

In order to realize the above limited animation, the image memory 7 controls so that a still image video signal stored in the image memory 7 in which a continuous still image is stored can be simultaneously used by the plurality of LED display devices 6. do.

For example, the first still picture video signal in the picture memory 1 is sent to consecutive addresses (e.g., A and B) of the buffer memory 10 (FIG. 2), where the same still picture video signal is sent to the buffer memory. From 10 it is supplied to two neighboring LED display devices 6. The second still picture video signal (the video signal of the second frame) stored in the buffer memory 7 is not used, and the third still picture video signal is sent to the consecutive addresses (for example, C and D) of the buffer memory 10. Lose.

With the above-described configuration, since an image is displayed by image information having a data amount corresponding to half of the image information used to display a moving image, such a movie is viewed as a very awkward movie, and thus a limited animation effect is obtained. Can be.

The above operation is realized by reducing the number of frames by half. In addition, the number of frames can be reduced to 1/3 or 1/4, and images can be displayed by simultaneously supplying video signals of the same frame to three or four LED display devices 6. When the CPU 82 is used as the control device as described above, various time expressions are possible by controlling the address of the image memory 7.

In the above description, although the LED display device is used as the display device 6, the present invention is not limited thereto, and the LED display device can be replaced with a liquid crystal display (LCD) device. Currently, two types of reflective and transmissive liquid crystal displays are used, but both the reflective and transmissive liquid crystal displays can use strobe light as a blinking light source. The transmissive liquid crystal display uses strobe light as a back-light (intermittent illuminator), and the reflective liquid crystal display uses only strobe light as an illuminating device.

11 is a block diagram showing an image display apparatus using a liquid crystal display apparatus according to another embodiment of the present invention. In FIG. 11, the same parts as in FIG. 2 are denoted by the same reference numerals and description thereof will be omitted. In the above embodiment, as shown in Fig. 11, a plurality of strobe lights 20 and a strobe light driving circuit 21 for driving these strobe lights 20 are provided. The image blinking control signal output from the image memory control device 8 is supplied to the strobe light driving circuit 21 through the signal line 12 to control the blinking of the strobe light 20.

Even when the strobe light 20 is used, the duty ratio of the blinking is the same as when the LED display device is used, and the strobe light driving circuit 21 can be represented by the duty ratio shown in FIG. It operates according to the flashing control signal.

If one strobe light 20 is disposed in accordance with each liquid crystal display device 6 shown in Fig. 11, but the liquid crystal display device 6 has a width in the range of about 30 cm to 50 cm, two or more liquid crystal display devices are provided. For example, one strobe light 20 may be commonly used for two liquid crystal display devices.

The example which modified the above-mentioned embodiment is demonstrated below. First, the above-described case is a modification of the case where a still picture video signal indicating a continuous motion that can be visually confirmed by a passenger in the train 4 is supplied to each display device 6. On the other hand, a still picture video signal representing an image which can be visually confirmed as a complete still picture by a passenger in the train 4 is supplied to the display device 6, respectively. In this case, exactly the same video signal is stored in the picture memory 7. If the video signals are supplied simultaneously under the same conditions as shown in FIG. 4, a complete still picture is displayed as shown in FIG. 12. 4a) may be displayed outside.

The effects obtained by the supply of the still image described above will be described. For example, if the information provided to the passenger from the entrepreneur of the vehicle (text only or a combination of text and video information) or the same information provided by various public agencies is a still picture, the passenger may be able to make the information more clear. It is easy to understand. This image moves very little in the direction opposite the direction of travel of the train 4.

Second, although the train 4 has been described as a moving body as described above, the present invention is not limited thereto, and the moving body may be an elevator, an escalator, a moving walkway, a ride on an amusement park, a road, or the like. 13 shows the case where the present invention is applied to an elevator 72. A plurality of display devices 6 are vertically arranged at regular intervals in the side surface 70 of the cavity (see FIGS. 13 and 14). By supplying the image display contents in a direction opposite to the direction in which the elevator rises or descends, passengers of the elevator 72 can visually check continuous motion images or still images regardless of whether the escalator 72 is raised or lowered. .

15 shows that the passenger of the escalator 74 can enjoy the continuous motion image or the still image. As shown in FIG. 15, the plurality of display devices 6 are disposed on the wall along the escalator 74. The timing at which the image flashes is adjusted in accordance with the moving speed of the escalator 74.

Third, the image source for image display may be an image source for displaying not only an advertisement image for advertisement or propaganda but also textual information such as a notice of a mobile company of a subway or a notice of a public institution as described above.

Fourth, although the buffer memory 10 is supplied to the video signal supply device 9 side as shown in the example shown in FIG. 2, the present invention is not limited thereto, and each display device 6 has a buffer memory 10. As shown in FIG. It can also be built into

In this case, it is sufficient that only a single signal line such as a coaxial cable or an optical cable is laid from the image memory 7. The necessary information is transmitted to each display device 6 by packet communication. Control signals (display timing signals, power supply control signals, etc.) are also sent from the image signal supply device 9 side to the display devices 6 by using the same cable.

Fifthly, provided that the speed of the moving object is constant, the present invention can be applied to other cases. In this case, the moving speed of the moving object is detected, and the display timing of each display device 6 is controlled based on the detection signal, so that the passenger can view the continuous motion image or the still image.

Sixth, when the image display apparatus according to the present invention is applied inside the tunnel, the image display apparatus can be freely installed at any position in the tunnel. For example, the image display device according to the present invention may be installed at a tunnel entrance or a central portion of a tunnel. In addition, the image display apparatus according to the present invention may be installed in a plurality of positions in the same tunnel. In this case, the image display apparatus according to the present invention may display the same image or different images. In addition, a network for image display can be established between stations. According to the established network, the video display device can cope with an emergency or the like.

Although the present invention has been described with reference to specific embodiments, numerous modifications are possible by those skilled in the art to which the present invention pertains without departing from the basic concept and scope of the present invention.

According to the present invention, a continuous moving image or a still image can be viewed on a moving vehicle, and a continuous image can be prevented from appearing in multiple images by regulating the relationship between the image display time and its stop time. Therefore, a natural and clear image can be provided. In addition, in particular, other video contents can be arbitrarily programmed, so that when the present invention is used as an advertisement video, it is possible to exert an advertisement effect having a very high effect.

Further, in the present invention, since a random access memory is provided for storing continuous still picture video signals, it is possible to respond to a plurality of video displays simply by changing the contents of the storage. In this way, it is extremely easy to change the contents of a still image, and there is no need to exchange still images manually, as in the prior art, and cope with a plurality of image sources. Since the image can be changed at the center side, safety can be ensured even when it is applied to a place such as a tunnel.

Claims (41)

In a video display apparatus, A plurality of display devices arranged in a line at predetermined intervals at a position visible to the passengers in the moving vehicle, A video signal supplying device for supplying a still picture video signal to the plurality of display devices; Operating the plurality of video display devices simultaneously, the display time of the still picture video signal displayed on the plurality of display devices is greater than the video display stop time. And intermittent display control means for shortening. The method of claim 1, The still picture image signal is an image signal representing a step-by-step image made slightly differently for each display device, and is an image signal representing successive motion as a whole image when viewed from the moving object. Image display apparatus characterized in that. The method of claim 1, And the still picture video signal is the same video signal for each display device, and is a video signal representing a still picture as a whole image when viewed from the moving object. The method of claim 1, And the display device is a two-dimensional display device having light emitting diodes arranged in a matrix-fashion. The method of claim 1, And the display device is a transmission-type liquid crystal display device, and the intermittent display control means is a back-light. The method of claim 1, And the display device is a reflection-type liquid crystal display device, and the intermittent display control means is a strobe light. The method of claim 5, And said back light is a strobe light. In the video display method (video display method) applied to a plurality of display devices arranged in a line at a predetermined interval at a position that can be seen by a passenger on the moving object, Creating a plurality of still images displayed sequentially to show a continuous operation; Storing the plurality of still images created in the previous step in a memory device; And intermittently displaying the plurality of stored still images on a corresponding display device, respectively. And wherein said intermittently displaying comprises satisfying a relationship of 100t1 < t2 when t1 is an image display time and t2 is a display stop time. The method of claim 8, And the still picture video signal is a video signal representing a stepwise image which is slightly different for each display device, and which represents a continuous operation as a whole image when viewed from a moving object. The method of claim 8, And the still picture video signal is the same video signal for each display device, and is a video signal representing a still picture as a whole image when viewed from a moving object. delete delete delete delete delete delete In the video display device, A plurality of display devices arranged in a line at a predetermined interval at a position visible to the passengers on the moving object; A still picture video signal memory means for supplying a still picture video signal to the plurality of display devices; Control means for controlling said still picture video signal memory means; An illumination device for intermittently displaying the plurality of display devices, The still picture video signal memory means stores a still picture video signal corresponding to a plurality of programs having different contents, and each program includes data representing a display frequency for a display time period. And the control means is configured to control the number of the respective programs displayed on the display device within the display time zone based on the data representing the display frequency. The method of claim 17, And said still picture video signal memory means comprises a random access memory. The method of claim 18, And the random access memory comprises a semiconductor memory. The method of claim 18, And the random access memory comprises an optical disk or a magnetic disk. delete delete delete The method of claim 17, And the still picture video signal is a video signal representing a stepped image made slightly differently for each display device, and is a video signal representing continuous operation as a whole image when viewed from the moving object. delete delete delete The method of claim 17, And the still picture video signal is exactly the same video signal for each display device, and is a video signal representing a still picture as a whole image when viewed from the moving object. delete delete delete The method of claim 17, And the display device is a two-dimensional display device having light emitting diodes arranged in a matrix. delete delete delete The method of claim 17, And said display device is a transmissive liquid crystal display device, and said illumination device for intermittently displaying is a backlight. The method of claim 36, And the backlight is a strobe light. delete delete delete The method of claim 17, And the display device is a reflective liquid crystal display device, and the illumination device for intermittently displaying is a strobe light.

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