JP2018022104A - Display switching device, display switching method, display switching program, and totalizator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display switching device, a display switching method, a display switching program, and a totalizer system capable of performing stable display without a display defect. A display switching device that controls switching to display video content created by either a first video transmission facility or a second video transmission facility on a video display device, and the display switching device has a predetermined standard. The video information and the first video information sent from the first video sending equipment to the video display device are compared, and if the reference video information and the first video information do not match, the second video information is compared. Switching control is performed so that the video content is displayed from the video transmission facility to the video display device. [Selection diagram] Fig. 3

Description

  The present invention relates to a display switching device, a display switching method, a display switching program, and a totalizer system that detect an abnormality of an output video and automatically perform switching control in a duplex video transmission facility.

  Conventionally, a totalizer system in which a video transmission facility and a video display device are connected via a LAN or the like is installed in a stadium, a public stadium, or the like. In stadiums and public stadiums, various types of information are displayed on large and small video display devices installed in various places in the hall.

  In public stadiums such as racetracks, bicycle racetracks, racetracks, auto racetracks, etc., various combinations such as race horses and race boats, odds screens, race relay full screens, screens that combine odds screens and race relay screens, etc. The video is displayed on the video display device (see, for example, Patent Document 1).

  Video data such as an odds screen displayed on such a video display device is created by, for example, a personal computer (hereinafter referred to as “personal computer”) included in the video transmission facility. The totalizer host provided in the video transmission facility synthesizes video data such as an odds screen and video data as a moving image display such as a camera relay and displays the synthesized data on the video display device.

  By the way, the video content displayed on the video display device is not transmitted due to the following causes (a) to (d), or deterioration / noise / layout abnormality occurs, and the display of the video display device is defective. May happen.

(A) Failure of a content server that is a device for creating video content (b) Failure of a device (such as a personal computer) that sends an odds screen (c) Failure of a converter or editing device, setting or operation error (d) Transmission device Failure, transmission line abnormality

  In order to deal with such problems, video transmission facilities are duplexed for the purpose of ensuring reliability (see, for example, Patent Documents 2 to 4). On the other hand, since the video display device is not duplicated, a “switch” for selecting an output system is required on the way.

FIG. 1 is a diagram showing a schematic configuration of a conventional totalizer system.
As shown in FIG. 1, the conventional totalizer system includes a video transmission device 10 and a video display device 21 installed on a display panel 20. There are a plurality of video display devices 21, which are installed in various places in the hall. The video transmission facility 10 is duplexed. For example, the video transmission equipment 10 includes an active system composed of the current totalizer host 11A and the current odds creation PC 12A, a spare system composed of the spare totalizer host 11B and the spare odds creation PC 12B, and a display switch 13. With.

  The totalizer hosts 11A and 11B each create the same video content. The odds creation PCs 12A and 12B each create the same odds screen or the like. The plurality of video display devices 21 display the same screen. When the video display device 21 displays the video content created by the totalizer host 11A and the odds screen created by the odds creation PC 12A, the video content created by the totalizer host 11B, the odds screen created by the odds creation PC 12B, etc. Is not displayed.

  The display switcher 13 switches the display on the video display device 21 from the active system in which the problem has occurred to the standby system that is operating normally in accordance with the operation of the staff member who has recognized the problem as described above.

JP 2013-137453 A JP 09-162910 A JP 2004-005628 A JP 2012-133622 A

  As described above, in the conventional totalizer system, an attendant (person) in the field visually confirms a defect in the video transmission equipment 10, and the display switcher 13 is manually operated to perform switching control.

  However, in small-scale facilities such as those in public stadiums, it is not possible to place a staff member who specializes in monitoring, and may not notice the problem or may be delayed in noticing it. In such a case, the video display device 21 has a problem that correct display cannot be performed.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a display switching device, a display switching method, a display switching program, and a totalizer system that are capable of performing stable display with no defects in display. And

The present invention employs the following configuration in order to solve the above problems.
That is, according to one aspect of the present invention, the display switching device of the present invention displays the video content created by either the first video transmission facility or the second video transmission facility on the video display device. A display switching device that performs switching control, comparing predetermined reference video information with first transmission video information transmitted from the first video transmission facility to the video display device, and comparing the reference video information with the reference video information When the first transmission video information does not match, switching control is performed so that the video content is displayed on the video display device from the second video transmission facility.

  The display switching device according to the present invention further compares the reference video information with the second transmission video information transmitted from the second video transmission facility to the video display device, and compares the reference video information with the first video information. It is desirable to control so that the video content is not displayed on the video display device when the two pieces of transmitted video information do not match.

  The display switching device of the present invention is preferably controlled so that nothing is displayed on the video display device.

  According to another aspect of the present invention, the display switching method of the present invention displays the video content created by either the first video transmission facility or the second video transmission facility on the video display device. A display switching method executed in a display switching device that performs switching control, wherein predetermined reference video information is compared with first transmission video information transmitted from the first video transmission facility to the video display device. When the reference video information does not match the first transmission video information, switching control is performed so that the video content is displayed on the video display device from the second video transmission facility.

  According to one aspect of the present invention, the display switching program of the present invention displays the video content created by either the first video transmission facility or the second video transmission facility on the video display device. A display switching program in a display switching device for switching control, the first transmission being sent to the video display device from predetermined reference video information and the first video transmission equipment to a computer of the display switching device Compare the video information, and if the reference video information and the first transmission video information do not match, execute a process of switching control to display the video content from the second video transmission facility to the video display device The display switching program is characterized in that the program is switched.

  According to one aspect of the present invention, the totalizer system of the present invention is a totalizer system in which a first video transmission facility, a second video transmission facility, a video display device, and a display switching device are connected to each other. The display switching device compares the predetermined reference video information with the first transmission video information transmitted from the first video transmission facility to the video display device, and compares the reference video information with the first video information. When the transmission video information of one does not match, switching control is performed so that the video content created by the second video transmission facility is displayed on the video display device.

  According to the present invention, there is an effect that there is no problem in displaying video content to be displayed on the video display device, and stable display can be performed.

It is a figure which shows schematic structure of the conventional totalizer system. It is a figure which shows schematic structure of the totalizer system in this Embodiment. It is a figure which shows schematic structure of the video transmission equipment in this Embodiment. It is a figure which shows the example of comparative image information. It is a figure which shows the example of signal format information and monitoring conditions. It is a figure which shows the example of event monitoring conditions. It is a flowchart which shows the flow of the display switching process in this Embodiment. It is a flowchart which shows the flow of the subroutine "event interlocking monitoring process" in this Embodiment. It is a figure which shows the example by which the empty area of a display screen is displayed black. It is a figure which shows the example of the display screen for public competitions where the content to display is fixed. It is a figure which shows the example of the comparison pattern of the display screen for public competitions where the content to display is fixed. It is a figure which shows the example of the display screen for public competitions which displays differently according to event information in the determined position. It is a figure which shows the example of the comparison pattern of the display screen for public competitions which displays differently according to event information in the determined position.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 2 is a diagram showing a schematic configuration of the totalizer system in the present embodiment.

  As shown in FIG. 2, the totalizer system in the present embodiment includes a video transmission facility 30 and a video display device 21 installed on the display panel 20.

  There are a plurality of video display devices 21, which are installed in various places in a public stadium such as a racetrack, a bicycle racetrack, a boat racetrack, and an auto racetrack. The video display device 21 is, for example, an LED display device, and displays various information such as racehorse information, odds information, and race relay video.

  The video transmission facility 30 is duplexed. For example, the video transmission equipment 30 includes a working system composed of the current totalizer host 11A and the current odds creation PC 12A, a spare system composed of the spare totalizer host 11B and the spare odds creation PC 12B, and the display switching device 14. With.

  The totalizer hosts 11A and 11B each create the same video content. The odds creation PCs 12A and 12B each create the same odds screen or the like. The plurality of video display devices 21 display the same screen. When the video display device 21 displays the video content created by the totalizer host 11A and the odds screen created by the odds creation PC 12A, the video content created by the totalizer host 11B, the odds screen created by the odds creation PC 12B, etc. Is not displayed.

  The display switching device 14 has a function of monitoring a transmission path for transmitting the video content created by the totalizer host 11 </ b> A and the odds screen created by the odds creation PC 12 </ b> A to the video display device 21. Similarly, the display switching device 14 has a function of monitoring a transmission path for transmitting the video content created by the totalizer host 11B and the odds screen created by the odds creation PC 12B to the video display device 21. The display switching device 14 analyzes the video signal in the transmission path and detects video signal abnormalities such as no signal, resolution difference, noise generation, and the like. When the display switching device 14 detects an abnormality in the video signal, the display switching device 14 switches the display on the video display device 21 from the active system in which a problem has occurred to the standby system that is operating normally. Further, the display switching device 14 outputs information indicating an abnormality in the video signal (display, alarm sound, transmission of abnormality occurrence to an attendant using a communication line).

  Further, the display switching device 14 is connected to the totalizer hosts 11A and 11B using a communication line, receives event information from the totalizer hosts 11A and 11B, and displays a screen to be displayed on the video display device 21. It has a function to monitor whether or not When the display switching device 14 detects that the screen to be displayed is not displayed on the video display device 21, the display switching device 14 changes from the active system in which a failure has occurred to the standby system that is operating normally, to the video display device 21. Switch the display. Further, the display switching device 14 outputs information indicating an abnormality in the video signal (display, alarm sound, transmission of abnormality occurrence to an attendant using a communication line).

  FIG. 3 is a diagram showing a schematic configuration of the video transmission facility in the present embodiment. FIG. 4 is a diagram illustrating an example of comparison image information. FIG. 5 is a diagram illustrating an example of signal format information and monitoring conditions. FIG. 6 is a diagram illustrating an example of event monitoring conditions.

  In FIG. 3, the video transmission equipment 30 includes a current system composed of a current totalizer host 11A and a current odds creation PC 12A, a spare system composed of a spare totalizer host 11B and a spare odds creation PC 12B, and display switching. Device 14. The display switching device 14 includes a video information analysis unit 15, a video abnormality monitoring unit 16, a device control unit 17, and a video switching unit 18.

  The totalizer host 11A includes an operating condition setting storage unit 111A, a control unit 112A, and a communication control unit 113A. The totalizer host 11B includes an operating condition setting storage unit 111B, a control unit 112B, and a communication control unit 113B.

  The operating condition setting storage unit 111A sets and stores operating conditions for the totalizer host 11A to operate. The operating condition setting storage unit 111B sets and stores operating conditions for the totalizer host 11B to operate. The communication control unit 113A has a communication interface function for LAN wiring and the like in order to communicate with the odds creation PC 12A and the display switching device 14. The communication control unit 113B has a communication interface function for LAN wiring and the like in order to communicate with the odds creation PC 12B and the display switching device 14. The control unit 112A controls the entire totalizer host 11A. The control unit 112B controls the entire totalizer host 11B.

  The odds creation PC 12A includes a communication control unit 121A, a character information generation unit 122A, a character information storage unit 123A, and an image conversion unit 124A. The odds creation PC 12B includes a communication control unit 121B, a character information generation unit 122B, a character information storage unit 123B, and an image conversion unit 124B.

  Since the communication control unit 121A communicates with the totalizer host 11A and the display switching device 14, it has a function of a communication interface for LAN wiring or the like. Since the communication control unit 121B communicates with the totalizer host 11B and the display switching device 14, it has a function of a communication interface for LAN wiring or the like. The character information generation units 122A and 122B input and generate character information such as telop displayed by the display switching device 14. The character information storage unit 123A stores the character information generated by the character information generation unit 122A. The character information storage unit 123B stores the character information generated by the character information generation unit 122B. The image conversion units 124A and 124B convert the character information into a video signal and send it to the display switching device 14.

  The video information analysis unit 15 includes a signal format analysis unit 151, a video signal conversion unit 152, and a screen information storage unit 153.

  The signal format analysis unit 151 analyzes the synchronization signal of the video signal input from the odds creation PC 12A or 12B and determines the resolution. Also, the resolution is determined from signal information added to the video signal. The video signal converter 152 converts the video signal received from the odds creation PC 12A or 12B into screen information developed into color information for each pixel. The screen information storage unit 153 stores the screen information converted by the video signal conversion unit 152.

  The video abnormality monitoring unit 16 includes a signal format abnormality detection unit 161, a video abnormality detection unit 162, a signal format information storage unit 163, and a comparative image information storage unit 164.

  The comparison image information storage unit 164 stores comparison image information including an image (comparison pattern) for comparison with event information notified from the totalizer host 11A or 11B. Information to which a comparison position (coordinates) is assigned is associated with the comparison pattern. For example, the comparison image information as shown in FIG. 4 is stored. The video abnormality detection unit 162 compares the data stored in the screen information storage unit 153 with the data stored in the comparison image information storage unit 164, and detects whether an abnormality has occurred. The signal format information storage unit 163 stores information on the signal format to be used. As shown in FIG. 5, the signal format information storage unit 163 stores, for example, resolution = 1024 × 768 dots as signal format information. The signal format abnormality detection unit 161 compares the information from the signal format analysis unit 151 with the data of the signal format information storage unit 163, and detects whether an abnormality has occurred.

  The apparatus control unit 17 includes an operation display unit 171, a monitoring condition setting storage unit 172, an event monitoring condition storage unit 173, a control unit 174, and a communication control unit 175.

  The monitoring condition setting storage unit 172 stores setting information such as monitoring operation conditions and a monitoring cycle. As shown in FIG. 5, the monitoring condition setting storage unit 172 includes, for example, a no-signal monitoring cycle = 1 second, a signal format monitoring cycle = 1 second, a screen update monitoring cycle = 10 seconds, a free video area monitoring cycle = 1 second, As empty video areas, empty area coordinates = (0,480) to (1024,768) and event-linked monitoring cycle = 1 second are stored. The event monitoring condition storage unit 173 stores event monitoring conditions for performing event linkage monitoring. For example, event monitoring condition conditions (event type, confirmation coordinates, confirmation pattern) as shown in FIG. 6 are stored. The operation display unit 171 performs a setting operation of the display switching device 14. The communication control unit 175 has a communication interface function for LAN wiring or the like in order to perform communication with the totalizer host 11A and the odds creation PC 12A, or communication with the totalizer host 11B and the odds creation PC 12B. For example, event information is obtained from the totalizer host 11A or 11B. The control unit 174 performs overall control of the display switching device 14 such as storage of video information, abnormality monitoring control, and switching control.

The video switching unit 18 includes a switching control unit 181 and a black screen signal generation unit 182.
The switching control unit 181 switches a signal system to be sent to the video display device 21 according to an instruction from the device control unit 17. The black screen signal generation unit 182 generates a video signal for outputting a black screen when both input video signals are abnormal (the active system and the standby system).

Next, this embodiment will be described in detail with reference to FIGS.
FIG. 7 is a flowchart showing the flow of display switching processing in the present embodiment. FIG. 8 is a flowchart showing the flow of the subroutine “event linkage monitoring process” in the present embodiment. FIG. 9 is a diagram illustrating an example in which an empty area of the display screen is displayed in black. FIG. 10 is a diagram illustrating an example of a display screen for public competitions in which the content to be displayed is fixed. FIG. 11 is a diagram illustrating an example of a comparison pattern of a display screen for public competitions in which the content to be displayed is fixed. FIG. 12 is a diagram illustrating an example of a display screen for public competition that displays different information depending on event information at a determined position. FIG. 13 is a diagram illustrating an example of a comparison pattern of a display screen for public competition that displays differently depending on event information at a determined position.

The “display switching process” illustrated in FIG. 7 is executed by the display switching device 14 described above.
The processes in steps S701A to S707A are processes for monitoring the current system (totalizer host 11A and odds creation PC 12A). The processes in steps S701B to S707B are processes for monitoring a spare system (totalizer host 11B and odds creation PC 12B). The processes of steps S701A to S707A and the processes of steps S701B to S707B are executed in parallel.

  In step S701A, the control unit 174 of the display switching device 14 executes monitoring processing for the current system. In step S701B, a monitoring process for a spare system is executed.

  These monitoring processes include (1) black screen monitoring process, (2) video format monitoring process, (3) free video area monitoring process, and (4) event-linked monitoring process.

  (1) The black screen monitoring process monitors whether or not the entire screen is not a black screen in order to check whether or not it is in a non-display state. (2) The video format monitoring process monitors whether or not a synchronization signal having a predetermined resolution is input. (3) The empty video area monitoring process detects noise generation on the entire screen by monitoring whether or not the empty video area of the video display device 21 is always black. As shown in FIG. 9, the video display device 21 uses a part of the personal computer video screen, and displays the other part in black as an empty video area. (4) The event linkage monitoring process will be described later in detail with reference to FIG.

  In Steps S702A and S702B, the control unit 174 determines whether or not there is a no-signal state by executing (1) black screen monitoring processing. Based on the setting of the monitoring condition setting storage unit 172 as shown in FIG. 5 (no signal monitoring cycle = 1 second), the signal format abnormality detection unit 161 receives the synchronization signal of the input video signal in the signal format analysis unit 151. If no synchronization signal is input, it is determined that there is no signal abnormality. The entire screen of the video display device 21 becomes a black screen.

  When it is determined that there is no signal state (step S702A: Yes, step S702B: Yes), the control unit 174 causes the switching control unit 181 to generate an abnormality (no signal state) in step S703A or S703B. In addition to notifying the staff, the occurrence of the abnormality is notified to the staff by a display screen, an alarm sound, or the like. On the other hand, when it is determined that there is no signal state (step S702A: No, step S702B: No), the process proceeds to steps S704A and S704B.

  In steps S704A and S704B, the control unit 174 determines whether or not a synchronization signal having a determined resolution is input by (2) video format monitoring processing. Based on the setting of the monitoring condition setting storage unit 172 as shown in FIG. 5 (signal format monitoring cycle = 1 second), the signal format abnormality detection unit 161 analyzes the synchronization signal of the input video signal by the signal format analysis unit 151. If the difference is compared with the set value (resolution) of the signal format information storage unit 163, it is determined that the video format is not normal (resolution is abnormal).

  When it is determined that the resolution is abnormal (step S704A: No, step S704B: No), the control unit 174 notifies the switching control unit 181 of the occurrence of the resolution abnormality in step S703A or S703B. The staff will be notified of the occurrence of the problem by means of a display screen or alarm sound. On the other hand, when it is determined that the resolution is not abnormal (step S704A: Yes, step S704B: Yes), the process proceeds to steps S705A and S705B.

  In steps S705A and S705B, the control unit 174 determines whether or not screen noise has occurred due to (3) empty video area monitoring processing. For example, it is determined whether or not the empty video area of the video display device 21 is always black. The screen information storage unit 153 stores screen information generated from the input video signal at a constant period. In this image information, it is confirmed that the empty video area set by the monitoring condition setting storage unit 172 is displayed in black. If the empty video area is not black, it is determined that screen noise has occurred.

  When it is determined that screen noise has occurred (step S705A: No, step S705B: No), the control unit 174 notifies the switching control unit 181 of the occurrence of an abnormality (screen noise) in step S703A or S703B. At the same time, the person in charge is notified of the occurrence of an abnormality through a display screen, alarm sound, or the like. On the other hand, when it is determined that no screen noise is generated (step S705A: Yes, step S705B: Yes), the process proceeds to steps S706A and S706B.

  In steps S706A and S706B, the control unit 174 determines whether or not the screen is displayed according to the display instruction by (4) event-linked monitoring processing. Details will be described later with reference to FIGS. 8 and 10 to 13.

  When it is determined that the screen is not displayed according to the display instruction (step S706A: No, step S706B: No), the control unit 174 makes an abnormality (display instruction) to the switching control unit 181 in step S703A or S703B. (The screen is not displayed on the street), and the staff is notified of the occurrence of the abnormality by a display screen, an alarm sound, or the like. On the other hand, when it is determined that the screen is displayed according to the display instruction (step S706A: Yes, step S706B: Yes), the process returns to steps S702A and S702B, and steps S702A and S702B are repeated.

  If any abnormality has occurred in the current system (when the determination in step S702A is Yes, or the determination in any of steps S704A, S705A, and S706A is No), the control unit 174 In step S707A, it is determined whether the spare system is normal. If the determination in step S702B is No and all determinations in step S704B, step S705B, and step S706B continue to be Yes, it is determined that the spare system is normal.

  When it is determined in step S707A that the spare system is normal (step S707A: Yes), the control unit 174 uses the signal system to be sent to the video display device 21 to the switching control unit 181 in step S708A. Instruct to switch from the previous system to the spare system.

  Further, when any abnormality has occurred in the standby system (when the determination in step S702B is Yes or the determination in any of steps S704B, S705B, and S706B is No), the control unit 174 In step S707B, it is determined whether the current system is normal. If the determination in step S702A is No and all the determinations in steps S704A, S705A, and S706A continue to be Yes, it is determined that the current system is normal.

  If it is determined in step S707B that the current system is normal (step S707B: Yes), the control unit 174 reserves a signal system to be sent to the video display device 21 to the switching control unit 181 in step S708B. To switch from the current system to the current system.

  On the other hand, when it is determined in step S707A that the spare system is not normal (step S707A: No), and in step S707B, the current system is also determined not normal (step S707B: No), the control unit 174 determines in step S709. The switching control unit 181 is instructed to cause the video display device 21 to output a black screen by the video signal generated by the black screen signal generation unit 182. The reason why the black screen is output to the video display device 21 is to avoid confusion in the field.

  The “event linkage monitoring process” for determining whether or not the screen is displayed according to the display instruction will be described in detail with reference to FIGS. 8 and 10 to 13.

  The display switching device 14 checks the display screen displayed on the video display device 21 in step S801. For example, screen information in which the communication control unit 175 obtains event information from the totalizer hosts 11A and 11B, and the video signal conversion unit 152 develops the video signal received from the odds creation PC 12A and PC 12B into color information for each pixel. And is stored in the screen information storage unit 153.

  In step S802, the control unit 174 determines whether or not the display screen checked in step S801 is a screen that may change the display content of a predetermined specific portion. For example, the display contents of the first monitoring location 1001 and the second monitoring location 1002 shown in FIG. 10 are not changed because the display content is fixed. On the odds screen shown in FIG. 10, “1” is displayed at the first monitoring location 1001 and “subtraction” is displayed at the second monitoring location 1002. On the other hand, the display contents of the third monitoring location 1201 and the fourth monitoring location 1202 shown in FIG. 12 may change depending on the event information. In the arrival order screen shown in FIG. 12, “Deliberation” is displayed at the third monitoring location 1201 or “Confirmation” is displayed. In addition, a number (for example, horse number 3) in the third place (III place) is displayed in the fourth monitoring location 1202.

  When it is determined that the screen is not a screen that may change the display content of the specific location (step S802: No), the control unit 174 sets a predetermined coordinate position of the specific location in step S803. For example, the coordinate position of the first monitoring location 1001 shown in FIG. 10 is set.

  In step S804, the video abnormality detection unit 162 extracts a comparison pattern corresponding to the coordinate position from the comparison image information storage unit 164. For example, a comparison pattern “1” as shown in FIG. 11 is extracted.

  In step S805, the video abnormality detection unit 162 determines whether the display of the specific part is correct by determining whether the image of the specific part is the same as the comparison pattern extracted in step S804.

  If it is determined that the display is correct (step S805: Yes), the process proceeds to step S807. On the other hand, when it is determined that the display is not correct (step S805: No), in step S806, the control unit 174 stores information including the display location where the incorrect display is performed on the memory.

  In step S807, the control unit 174 determines whether there is another predetermined specific portion.

  If it is determined that there are others (step S807: Yes), the process returns to step S803. On the other hand, if it is determined that there is no others (step S807: No), this subroutine “event linkage monitoring process” is terminated, and the process returns to the “display switching process” in FIG.

  On the other hand, if it is determined in step S802 that the display content of the specific location is likely to be changed (step S802: Yes), the control unit 174 determines the coordinates of the predetermined specific location in step S808. In addition to setting the position, based on the event information obtained in step S801, information (display contents) on which “where” and “what” are displayed on the screen is determined. For example, the coordinate position of the third monitoring location 1201 shown in FIG. 12 is set, and it is determined that the display content is “Deliberation”.

  In step S809, the video abnormality detection unit 162 extracts a comparison pattern corresponding to the coordinate position from the comparison image information storage unit 164. For example, a comparison pattern “Deliberation” as shown in FIG. 13 is extracted.

  In step S810, the video abnormality detection unit 162 determines whether the display of the specific location is correct by determining whether the image of the specific location is the same as the comparison pattern extracted in step S809.

  When it is determined that the display is correct (step S810: Yes), the process proceeds to step S812. On the other hand, when it is determined that the display is not correct (step S810: No), in step S811, the control unit 174 stores information including the display location where the incorrect display is performed on the memory.

  In step S812, control unit 174 determines whether there is another predetermined specific portion.

  If it is determined that there are others (step S812: Yes), the process returns to step S808. On the other hand, if it is determined that there is no other (step S812: No), this subroutine “event linkage monitoring process” is terminated, and the process returns to the “display switching process” in FIG.

  As described above, according to the present embodiment, even if an abnormality occurs in the current system, it is possible to automatically switch to the standby system. As a result, it is possible to deal with a failure in a short time, and therefore an improvement in fan service can be expected. In addition, the burden on the monitoring worker can be reduced and the operation cost can be reduced.

  As described above, the embodiments of the present invention have been described with reference to the drawings. However, the above-described embodiments of the present invention are not limited to hardware, a DSP (Digital Signal Processor) board, or a CPU as a function of the display switching device. It can be realized by firmware or software on the board.

  Further, the display switching device to which the present invention is applied is not limited to the above-described embodiment as long as the function is executed, and even a single device or a system composed of a plurality of devices Needless to say, the integrated device may be a system in which processing is performed via a network such as a LAN or a WAN.

  It can also be realized by a system comprising a CPU, ROM or RAM memory connected to a bus, an input device, an output device, an external recording device, a medium drive device, and a network connection device. That is, a ROM or RAM memory, an external recording device, and a portable recording medium that record a software program for realizing the system of the above-described embodiment is supplied to the display switching device, and the computer of the display switching device is programmed. Needless to say, this can also be achieved by reading and executing.

  In this case, the program itself read from the portable recording medium or the like realizes the novel function of the present invention, and the portable recording medium or the like on which the program is recorded constitutes the present invention.

  Examples of portable recording media for supplying the program include flexible disks, hard disks, optical disks, magneto-optical disks, CD-ROMs, CD-Rs, DVD-ROMs, DVD-RAMs, magnetic tapes, and nonvolatile memory cards. Various recording media recorded via a network connection device (in other words, a communication line) such as a ROM card, electronic mail or personal computer communication can be used.

  The computer (information processing apparatus) executes the program read out on the memory, thereby realizing the functions of the above-described embodiment, and an OS running on the computer based on the instructions of the program. Performs part or all of the actual processing, and the functions of the above-described embodiments are also realized by the processing.

  Further, a program read from a portable recording medium or a program (data) provided by a program (data) provider is stored in a memory provided on a function expansion board inserted into the computer or a function expansion unit connected to the computer. After the writing, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instructions of the program, and the functions of the above-described embodiment are realized by the processing. obtain.

  That is, the present invention is not limited to the embodiment described above, and can take various configurations or shapes without departing from the gist of the present invention.

10 Video transmission equipment 11A Totalizer host (current)
11B Totalizer host (reserved)
12A odds creation PC (current)
12B odds creation PC (spare)
DESCRIPTION OF SYMBOLS 13 Display switching device 14 Display switching device 15 Image | video information analysis part 16 Image | video abnormality monitoring part 17 Device control part 18 Image | video switching part 20 Display panel 21 Image | video display apparatus 30 Image | video transmission equipment 111A, 111B Operation condition setting preservation | save part 112A, 112B Control part 113A, 113B Communication control unit 121A, 121B Communication control unit 122A, 122B Character information generation unit 123A, 123B Character information storage unit 124A, 124B Image conversion unit 151 Signal format analysis unit 152 Video signal conversion unit 153 Screen information storage unit 161 Signal format Abnormality detection unit 162 Video abnormality detection unit 163 Signal format information storage unit 164 Comparative image information storage unit 171 Operation display unit 172 Monitoring condition setting storage unit 173 Event monitoring condition storage unit 174 Control unit 175 Communication control unit 181 Switching control Part 182 black screen signal generation unit 1001 first monitoring portion 1002 second monitoring portion 1201 third monitoring portion 1202 fourth monitoring point

Claims (6)

A display switching device that performs switching control so that video content created by either the first video transmission facility or the second video transmission facility is displayed on the video display device,
When predetermined reference video information is compared with first transmission video information transmitted from the first video transmission facility to the video display device, and the reference video information does not match the first transmission video information The display switching device, wherein the switching control is performed so that the video content is displayed on the video display device from the second video transmission facility.   Further, the reference video information is compared with the second transmission video information transmitted from the second video transmission facility to the video display device, and when the reference video information and the second transmission video information do not match, The display switching device according to claim 1, wherein the video content is controlled not to be displayed on the video display device.   The display switching device according to claim 2, wherein control is performed so that nothing is displayed on the video display device. A display switching method executed in a display switching device that performs switching control so that video content created by either the first video transmission facility or the second video transmission facility is displayed on the video display device,
When predetermined reference video information is compared with first transmission video information transmitted from the first video transmission facility to the video display device, and the reference video information does not match the first transmission video information The display switching method, wherein switching control is performed so that the video content is displayed on the video display device from the second video transmission facility. A display switching program in a display switching device that performs switching control so that video content created by either the first video transmission facility or the second video transmission facility is displayed on the video display device,
In the computer of the display switching device,
When predetermined reference video information is compared with first transmission video information transmitted from the first video transmission facility to the video display device, and the reference video information does not match the first transmission video information A display switching program for executing a process of switching control so that the video content is displayed on the video display device from the second video transmission facility. A totalizer system in which a first video transmission facility, a second video transmission facility, a video display device, and a display switching device are connected to each other,
The display switching device compares predetermined reference video information and first transmission video information transmitted from the first video transmission facility to the video display device, and compares the reference video information and the first transmission. When the video information does not match, the totalizer system is characterized by switching control so that the video content created by the second video transmission facility is displayed on the video display device.