JP7332551B2 - display device, display system, server, computer program - Google Patents

Description

The present invention relates to a display device that displays video, a display system, a server that provides event data to the display device, and a computer program that causes a computer to function as the display device.

2. Description of the Related Art Household appliances such as refrigerators and washing machines are widely used mainly for efficient household chores. Home electric appliances such as televisions and video equipment have become popular for daily entertainment. In recent years, these home appliances have been connected to a network based on the concept of IoT (Internet of Thing), and it has become possible to remotely check the usage status of each home appliance and, conversely, to operate the home appliance from a remote location. has become possible. Under such circumstances, there is a demand for a technique for confirming the state of each home appliance from a remote location away from the home appliance.

On the other hand, in computer systems and the like, a notification function is implemented to notify the user of the arrival of information such as incoming mail and notifications from visited sites. For example, when an OS or an application detects an incoming mail, it notifies the user of the incoming mail through a user interface. The OS of the computer system notifies the user of the security information through the user interface when it becomes possible to provide the security information of the OS. If the user permits the browser application to access the site, the browser application receives information such as new information from the site and notifies the user through the user interface.

However, since these notification functions are realized as functions of the OS and applications, it is necessary to implement the same number of notification targets. That is, it is technically complicated and difficult to implement in a wide variety of home appliances intended for use at home.

JP 2015-146097

As described above, conventional display devices, display systems, servers, and computer programs have the problem that it is technically complicated to check the status of home appliances in remote locations. The embodiments of the present invention have been made to solve such problems, and provide a display device, a display system, a server, and a computer program that enable status confirmation of home appliances in remote locations with simple implementation. purpose.

In order to achieve the above-described object, a display device according to an embodiment is a display device connected via a network to an event generating device capable of transmitting notification data indicating its own state, wherein the priority of notifying a user an event data acquisition unit that acquires event data in which priority information indicating is added to notification data; a database that stores the event data; and priority information with the highest priority from the event data stored in the database. A display management unit for selecting added notification data, and a display information generation unit for generating display information including the selected notification data.

Further, a display system according to an embodiment is a display system connected via a network to an event generating device capable of transmitting notification data indicating its own state, comprising: (1) a notification data acquisition unit for acquiring notification data; , an event queue database that accumulates acquired notification data and manages it as an event queue, and a priority assigning unit that adds priority information indicating the priority of notification to the user for each of the notification data contained in the event queue. and an event data providing unit that provides the event queue managed by the event queue database as event data; (2) an event data obtaining unit that obtains event data from the event queue server; an event data database that stores data; a display management unit that selects notification data to which priority information with the highest priority is added from the event data stored in the event data database; and display information including the selected notification data and a display device including a display information generation unit that generates a.

A server according to an embodiment is a server connected via a network to an event generating device capable of transmitting notification data indicating its own state, and includes a notification data acquisition unit for acquiring notification data, and a notification data acquisition unit for acquiring the acquired notification data. An event queue database that accumulates and manages it as an event queue; a priority assigning unit that adds priority information indicating the priority of notification to the user for each notification data included in the event queue; and an event data providing unit that provides the received event queue as event data.

A computer program according to an embodiment is a computer program that causes a computer to function as a display device connected via a network to an event generating device capable of transmitting notification data indicating its own state, wherein the display device notifies a user an event data acquisition unit for acquiring event data in which priority information indicating the priority to be given is added to the notification data; a database for storing the event data; It is characterized by comprising a display management unit that selects notification data to which degree information is added, and a display information generation unit that generates display information including the selected notification data.

1 is a configuration diagram showing a home appliance network according to an embodiment; FIG. 1 is a block diagram of a home appliance network according to an embodiment; FIG. FIG. 4 is a diagram showing an example of the contents of notification data issued by home appliances belonging to the home appliance network according to the embodiment; It is a figure which shows an example of the event queue which the event queue server which belongs to the household appliance network which concerns on embodiment produces|generates. It is a figure which shows an example of the screen display which the display apparatus which belongs to the household appliance network which concerns on embodiment displays. 4 is a flow chart showing an example of the operation of an event queue server belonging to the home appliance network according to the embodiment; 4 is a flow chart showing an example of the operation of a display device belonging to the home appliance network according to the embodiment;

(Configuration of Home Appliance Network)
A home appliance network according to an embodiment will be described below with reference to the drawings. As shown in FIG. 1, the home appliance network 1 has an event generating device 10, an event queue server 20 and a notification display device 30. FIG. The event generator 10 , the event queue server 20 and the notification display device 30 are interconnected by the network 5 . The event generator 10, event queue server 20 and notification display device 30 may be located geographically apart from each other.

The event generating device 10 is a home appliance that can be connected to a network, and has a function of transmitting its own status and matters (events) to be notified to the user as notification data. A washing machine 11, an air conditioner 12, a refrigerator 13, a television 14, an electronic lock 15, and the like are exemplified as the event generating device 10. FIG.

The event may have common contents for each event generating device, but generally each event generator has unique contents. The contents of the event include, for example, operation status (operation information such as power on/off status), operation status (operation information such as door open/close status, key open/close status, operation mode such as cooling or heating), error status (equipment error information such as stoppage, maintenance information, etc.). That is, the event differs in content and urgency depending on the type of home appliance. The notification data issued by the event generating device 10 includes its own identification information, the content of the event, the category of the device to which it belongs, and the like. The notification data may be transmitted by the event generating device 10 to the event queue server 20 by a push method, or may be transmitted by a polling method read by the event queue server 20 at regular time intervals.

The event queue server 20 is a server that manages notification data transmitted by the event generating device 10 as an event queue. The event queue is information in which notification data generated for each event generating device are listed in order of event generation (or arrival order to the event queue server). The event queue server 20 accumulates the notification data of the event-generating device by adding the priority to be displayed on the notification display device 30, and provides it to the notification display device 30 as an event queue.

The event generating devices whose notification event should be displayed on the notification display device 30 may be all event generating devices from which the event queue server 20 can receive notification data, or may be limited to pre-registered event generating devices. The event queue server 20 may link and manage the notification display device 30 and the corresponding event generation device 10 to provide services to a plurality of users.

The event queue server 20 periodically updates the managed event queue, deletes the expired event from the queue, and provides it to the notification display device 30 as event data. The event data may be transmitted by the event queue server 20 to the notification display device 30 by a push method, or may be transmitted by a polling method read by the notification display device 30 at regular time intervals.

The notification display device 30 is a device that provides video information and the like to the user. Examples of the notification display device 30 include a set-top box (STB) 31 that relays broadcast signals and the like to a television device and the like, and a display device 32 that can directly receive broadcast signals and the like. The notification display device 30 demodulates the broadcast signal directed to the user and displays the video information to the user, acquires the notification data issued by the event generating device 10 as event data, superimposes it on the video information, and provides it to the user. It has the function to

In the home appliance network 1 shown in FIG. 1, an event generating device 10 transmits notification data including its own status, an event queue server 20 accumulates the notification data, and generates an event queue to which priority information and the like are added. The notification display device 30 acquires the event queue as event data from the event queue server 20 and provides it to the user together with the video information. That is, although the event queue server 20 generates an event queue listing notification data to which priority information is added, the present invention is not limited to this. The notification display device 30 may directly acquire the notification data issued by the event generating device 10 and generate an event queue. The priority information in the event queue may be directly added to the notification data by the notification display device 30, or the event generating device 10 may be configured to transmit the notification data to which the priority information and the like are added. good.

In the home appliance network, the event generating device, the event queue server, and the notification display device of this embodiment, priority information and the like are added to the notification data indicating the state of the event generating device. Even if there are a plurality of devices, it is possible to provide the user with the status of the event-generating device according to the priority order.

Next, with reference to FIG. 2, the configuration of the home appliance network 1 of the embodiment will be described in detail. In the embodiment shown in FIG. 2, the air conditioner 12 and the refrigerator 13 are shown as the event generating devices 10, and the display device 32 is shown as the notification display device 30. FIG. Air conditioner 12 and refrigerator 13 are connected to event queue server 20 and display device 32 via network 5 .

(Configuration of event generating device 10)
As shown in FIG. 2, the air conditioner 12 includes a state detection section 102, a notification data generation section 112, and a notification data transmission section 122. FIG. The state detection unit 102 is a sensor that detects operation information, operation information, error information, and the like of the air conditioner 12 . In the case of the air conditioner 12, the operation information detected by the state detection unit 102 includes the on/off state of the power supply, the operation information includes temperature setting information and mode information, and the error information includes the presence or absence of an operation error. The notification data generation unit 112 generates notification data indicating an operation state, an operation state, an error state, etc., based on at least one or more of operation information, operation information, error information, etc. detected by the state detection unit 102 .

FIG. 3 shows an example of the contents of notification data generated by the notification data generation unit 112. As shown in FIG. As shown in FIG. 3, the air conditioner 12 includes self identification information d0, a message d1, and a home appliance category d2 to which the air conditioner 12 belongs. The message d1 is information provided to the user, such as the operating state, operating state, and error state detected by the state detection unit 102 . The message d1 may be stored in advance in a storage unit (not shown) as a standard sentence. In this case, the notification data generation unit 112 selects a corresponding standard message based on the operation state, operation state, error state, etc. detected by the state detection unit 102 and creates notification data. The message d1 may also be a pre-encoded message. In this case, the message d1 will contain only the code. The home appliance category d2 is information used as reference information for the event queue server 20 to determine the priority of notification data. The home appliance category d2 is defined by classifying the event generating devices 10, for example, and includes washing machines 11, air conditioners 12, refrigerators 13, televisions 14, electronic locks 15, and the like. That is, the example shown in FIG. 3 shows the notification data with the content of the message "maintenance is completed" for the home appliance with the identification information "13" belonging to the home appliance category "air conditioner".

The refrigerator 13 also has a configuration similar to that of the air conditioner 12 . Specifically, refrigerator 13 includes state detection unit 103 , notification data generation unit 113 , and notification data transmission unit 123 . State detection unit 103, notification data generation unit 113, and notification data transmission unit 123 have functions common to state detection unit 102, notification data generation unit 112, and notification data transmission unit 122, respectively. In the case of the refrigerator 13, the operation information detected by the state detection unit 103 is the on/off state of the power supply, the operation information is internal temperature information and maintenance information, and the error information is the presence or absence of an operation error.

(Configuration of event queue server 20)
As shown in FIG. 2, the event queue server 20 includes a notification data acquisition unit 200, an event queue management unit 210, an event queue database (DB) 220, an event data provider 230, a priority information database (DB) 240, and a priority A granting unit 250 is provided.

The notification data acquisition unit 200 is an interface that acquires notification data from event generating devices such as the air conditioner 12 and the refrigerator 13 . The notification data acquisition unit 200 may receive notification data sent from the air conditioner 12 or the refrigerator 13 by a push method, or read the notification data from the notification data acquisition unit 200 to the air conditioner 12 or the refrigerator 13 by a polling method.

The event queue management unit 210 accumulates the notification data acquired by the notification data acquisition unit 200 in the event queue database 220 . The event queue manager 210 and event queue database 220 manage notification events as listed event queues.

The event data providing unit 230 is an interface that provides the display device 32 with event cues of the air conditioner 12 and the refrigerator 13 managed by the event queue database 220 as event data. The event data provider 230 may provide the event queue stored in the event queue database 220 to the display device 32 in a push manner, or may provide the event queue in a polling manner in response to a request from the display device 32 . good too.

The priority information database 240 stores a definition table and determination criteria that define the priority displayed by the display device 32 for each notification data sent from the air conditioner 12 and the refrigerator 13 . For example, among the event generating devices 10, there are household appliances (for example, electronic locks) whose event data to be transmitted always has a high priority, and household appliances categories (for example, air conditioners) that require a long time to restore when they fail. . The priority information database 240 stores definition rules that define the priority of such notification data. For example, an event requiring external repair is defined as priority 1, and an event belonging to the electronic lock category is defined as priority 2. The priority assigning unit 250 has a function of assigning priority information indicating priority etc. to the event queues accumulated in the event queue database 220 based on the definition rules stored in the priority information database 250. . That is, the event queue stored in the event queue database 220 is formed in a form in which priority information is attached to each piece of notification data.

FIG. 4 is an example of an event queue accumulated in the event queue database 220. As shown in FIG. As shown in FIG. 4, the event queue includes elements such as queue number d3, priority d4, display time limit d5, expiration time limit d6, identification information d0, message d1 and home appliance category d2.

The queue number d3 is a notification event number assigned in the order in which notification events from the air conditioner 12 or the refrigerator 13 arrive at the event queue database 220 . In FIG. 4, the notification data arrives in the order of 101, 102, and 103 with queue numbers d3 from the top. The priority d4 is information indicating the priority to be displayed given to each piece of notification data. In the example shown in FIG. 4, they are represented by numbers such as 1, 2, 3, . . . in descending order of priority. The display time limit d5 is information indicating the time (in seconds, for example) during which the message d1 included in the corresponding notification data should be displayed. The expiration date d6 is information indicating the time (in seconds, for example) that the notification data should be stored as an event queue after it arrives at the event queue database 220 . In the example shown in FIG. 4, the queue number "101" indicates that the message "Normal operation." has a priority of "3", a display period of "5 seconds", and a time to remain in the event queue of "300 seconds" from arrival.

The same applies to the notification data corresponding to other queue numbers. In the event queue shown in FIG. 4, the event of the electrical appliance category "refrigerator" with the identification information "13", which reaches the event queue database 220 third, has the priority "1". This indicates that the notification data from the refrigerator 13 has arrived at the event queue database 220 later than the notification data that has arrived from the electronic lock 15 . On the other hand, the priority of the notification data of the electronic lock 15 is “3”, which is lower than the priority of “1” of the notification data from the refrigerator 13 . That is, the event with the queue number "103" has a higher priority than the events with the queue number "101", etc., indicating that the event with the queue number "103" should be given priority over other notification data and notified to the user. .

(Configuration of notification display device 30)
As shown in FIG. 2 , the display device 32 has an event data acquisition section 300 , a state detection section 310 , an event data database 320 , a display management section 330 , a display information generation section 340 and a display section 350 .

The event data acquisition unit 300 is an interface that acquires event data from the event queue database 220 . The event data acquisition unit 300 may receive event data sent from the event queue database 220 by a push method, or may periodically acquire the latest event data from the event queue database 220 by a polling method. The received event data is stored in the event data database 320 .

The state detection unit 310 is a sensor that detects its own operating state. Based on the event data received from the event queue database 220, the display device 32 provides information including the event data to the user when the display device 32 is in a state capable of providing information. For example, the state detection unit 310 detects whether the display device 32 is in a power-off state, a maintenance mode state, or the like.

The event data database 320 accumulates event data acquired by the event data acquisition unit 300 . The display management unit 330 is a calculation block that determines whether event data accumulated in the event data database 320 is provided to the user according to the detection result of the state detection unit 310 .

The display information generator 340 adds the event data accumulated in the event data database 320 to the video information and the like displayed by the display device 32 . Specifically, the display information generation unit 340 adds event data to the video information by, for example, imposing a message at a specific position of the screen display in the video information.

The display unit 350 is a visual interface for the display device 32, and is a display typified by, for example, a liquid crystal display device. The display unit 350 displays images/videos based on video information, event data added by the display information generation unit 340, and the like.

FIG. 5 shows an example of how the display unit 350 displays event data. As shown in FIG. 5, the display unit 350 of the embodiment displays a message display D1 indicating the message d1 included in the event data at a predetermined position (lower right corner of the display screen D0 in the example shown in FIG. 5) of the display screen D0. , the category display D2 indicating the home appliance category d2 is displayed. In the example shown in FIG. 5, the message d1 "Error No. 1 has occurred in the refrigerator" with the queue number d3 of "103" is displayed in the message display D1, and the corresponding home appliance category d2 "Refrigerator" is displayed as the category. It is displayed as an icon in D2.

(Operation of event queue server)
Next, operation of the event queue server 20 will be described with reference to FIG. In the example described below, it is assumed that notification data of the air conditioner 12 as the event generating device 10 is provided to the user.

The notification data sending unit 122 of the air conditioner 12 outputs notification data as shown in FIG. When sent to the queue server 20, the notification data acquisition unit 200 receives the notification data, and the event queue management unit 210 stores the received notification data in the event queue database 220 (S400).

As shown in FIG. 4, the event queue management unit 210 assigns "104" as a new queue number to the notification data from the air conditioner 12 acquired by the notification data acquisition unit 200 (S402).

Subsequently, the event queue management unit 210 determines whether priority information is included in the notification data from the air conditioner 12 acquired by the notification data acquisition unit 200 (S404).

As a result of determination, if the notification data does not contain priority information (No in S404), the priority assigning unit 250 determines the priority of the notification data (S406). Examples of criteria for determining the priority include a table comparing the home appliance category d2 stored in the priority information database 240 and the priority, and a table comparing the keyword included in the message d1 and the priority. be. In the example shown in FIG. 3, priority information is not included in the notification data from the air conditioner 12, so the priority assigning unit 250 determines the priority.

When the priority is determined, the priority assigning unit 250 adds priority information to the event queue accumulated in the event queue database 220 (S408). In the example shown in FIG. 4, the priority d4 of "2" is added to the air conditioner with the identification information "12" of the queue number "104". In addition to the priority d4, the priority assigning unit 250 may add the display time limit d5 and the expiration time d6 to the event queue as priority information. In the example shown in FIG. 4 , the priority assigning unit 250 adds “600 seconds” to the display time limit d5 and “3600 seconds” to the expiration time d6 for the air conditioner with the identification information “12” of the queue number “104”. there is Criteria for determining the display period and expiration period can be stored in advance in the priority information database 240 .

The event queue management unit 210 generates an event queue to which priority information is added (S410). At this time, the event queue management unit 210 monitors the expiration date d6 included in the event queue, and deletes the notification data of the queue number for which the expiration date d6 has passed since the arrival of the notification data. In the example shown in FIG. 4, the data with the queue number d3 of "101" is deleted from the event queue when 3600 seconds have passed since it arrived.

When the event queue is generated, the event data provider 230 provides the event queue accumulated in the event queue database 220 as event data to the display device 32 (S412).

If the event queue management unit 210 determines that priority information is included in the notification data (Yes in S404), the event queue management unit 210 creates an event queue (S410). For example, when priority information is already included in the notification data issued by the air conditioner 12, priority addition by the priority assigning unit 250 is omitted, and the already included priority information is used as it is for the event queue.

As described above, the event queue server 20 and the home appliance network 1 of this embodiment add priority information to the notification data sent from the event generating device 10, so that the display device 32 can perform display control using the priority information. can be realized.

(Operation of notification display device)
Next, the operation of the display device 32 will be described with reference to FIG. In the example described below, it is assumed that the event queue server 20 provides the event data shown in FIG.

The event data acquisition unit 300 periodically acquires event data from the event queue server 20 (S500). The event data may be acquired by receiving data sent from the event queue server 20 by a push method, or may be acquired by the event data acquisition unit 300 periodically by a polling method. The event data acquisition unit 300 accumulates the acquired event data in the event data database 320 as an event queue.

The state detection unit 310 detects the state of the display device 32 and sends the detection result to the display management unit 330 (S502). The display management unit 330 determines whether the display device 32 can provide information to the user (S504).

If it is determined that information cannot be provided because the display device 32 is not in operation (No in S504), the event data acquisition unit 300 waits to receive the next event data (S500).

If information can be provided as a result of determination, such as the display device 32 being in operation (Yes in S504), the display management unit 330 determines whether an event queue is stored in the event data database 320 (S506).

If there is an event queue in the event data database 320 (Yes in S506), the display management unit 330 reads the event queue from the event data database 320, and reads the data of the queue number with the highest priority among the priority information ( S508). In the example shown in FIG. 4, the queue number d3 is "103", the identification information d0 is "13", and the home appliance category d2 is "refrigerator". 330 selects the message d1 "Error No. 1 has occurred in the refrigerator" of the queue number "103" and the home appliance category d2 "air conditioner" as information to be provided.

The display information generation unit 340 adds the message d1 selected by the display management unit 330 and the home appliance category d2 information to the information displayed by the video information display device 32 to generate display information to be displayed by the display unit 350. (S510). In the example shown in FIG. 5, the display information generation unit 340 superimposes the message "Error No. 1 has occurred in the refrigerator." display information is generated.

The display unit 350 displays the display information generated by the display information generation unit 340 on the display screen D0 (S512).

In the example of this embodiment, the display device 32 is limited in the number of messages that can be included in the display information, and can only display messages for one queue number. Therefore, only the information with the highest priority (or the information with the highest priority and the smallest queue number) among the information contained in the event queue is selected and displayed on the display section 350 . The display management unit 330 monitors the display time limit d5 included in the event queue (S514), and the message d1 is displayed by the display unit 360 until the time indicated by the display time limit d5 elapses (No in S514). , the display unit 350 maintains the display of the display information (S512).

When the display time of the message d1 by the display unit 350 has passed the time indicated by the display time limit d5 (Yes in S514), the display management unit 330 causes the display information generation unit 330 to stop displaying the message d1 and the home appliance category d2. (S516).

When the display of the message d1 and home appliance category d2 being displayed is stopped, the display management unit 330 deletes the information of the cue number whose display is stopped, and changes the order of priority in the event queue (S518).

The display management unit 330 determines whether event queues are stored in the event data database 320 (S506), and repeats the process until information on all queue numbers is displayed and deleted (S508 to S518).

If the event queue does not exist in the event data database 320 (No in S506), the operation ends.

As described above, the notification display device 30 and the home appliance network 1 of the embodiment provide notification data from the event generating device 10 to the user using an event queue to which priority information indicating the priority to be provided to the user is added. Therefore, even if notification data with different priorities are issued from a plurality of event generating devices, information can be provided to the user in an appropriate order.

In the display device 32 of the above-described embodiment, the number of messages that can be included in the display information that can be displayed is limited, and it has been described that only messages for one queue number can be displayed. is not limited to A plurality of messages may be displayed so that messages related to a plurality of queue numbers can be displayed. In this case, the display management unit 330 selects a plurality of pieces of notification data based on the priority of the priority information, the value of the queue number, and the like.

In the embodiment described above, the notification display device 30 is described as being the display device 32 represented by a television or the like, but it is not limited to this. Even if the notification display device 30 is, for example, the set-top box 31, the same configuration can produce the same effect. In the case of the set-top box 31, the display unit 350 may be omitted and the configuration up to the display information generation unit 340 may be used.

Furthermore, in the above-described embodiment, the hardware elements are used to configure the embodiment, but the present invention is not limited to this. Embodiments may be implemented using a computing device. In this case, computer software that realizes the functions of the above-described embodiments may be prepared, installed in a computer device, and executed.

Although embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

1 … home appliance network,
5 network,
10... Event generating device,
11... washing machine,
12 air conditioner,
13... Refrigerator,
14 TV,
15... electronic lock,
20... Event queue server 30... Notification display device,
31 ... set-top box,
32 ... display device,
102, 103 ... state detection unit,
112, 113 ... notification data generation unit,
122, 123 ... notification data sending unit,
200 ... Notification data acquisition unit,
210 ... event queue management unit,
220 ... event queue database,
230 ... Event data providing unit,
240 priority information database,
250... Priority giving unit,
300 ... event data acquisition unit,
310 ... state detection unit,
320... event data database 330... display management section,
340 ... display information generation unit,
350... Display unit.

Claims (5)

A display device connected via a network to an event generating device capable of transmitting notification data indicating its own state,
an event data acquisition unit for acquiring event data in which priority information including a priority to be notified to a user and a display deadline to be displayed is added to the notification data;
a database that stores the event data;
a display management unit that selects the notification data to which priority information with the highest priority is added from the event data stored in the database;
a display information generating unit that generates display information including the selected notification data;
with
The display management unit stops displaying the notification data whose display time limit has passed, and deletes the event data including the notification data whose display has been stopped from the database,
The display management unit repeats selection of the notification data, suspension of display of the notification data, and deletion of the event data until all event data in the database is deleted;
A display device characterized by: A display system in which an event generation device capable of transmitting notification data indicating its own state, an event queue server, and a display device are connected via a network,
(1) The event queue server
a notification data acquisition unit that acquires the notification data;
an event queue database that accumulates the acquired notification data together with a queue number indicating the order of arrival thereof and manages it as an event queue;
Priority information including a priority to be notified to the user, a display period to be displayed, and an expiration period to be saved as an event queue is added to each of the notification data contained in the event queue accumulated in the event queue database. a priority granting unit to
an event queue management unit that monitors the expiration date contained in the event queues accumulated in the event queue database and deletes the event queue corresponding to the queue number whose expiration date has passed since the arrival of the notification data;
an event data providing unit that provides the event queue managed by the event queue database as event data to the display device;
(2) The display device
an event data acquisition unit that acquires the event data from the event queue server;
an event data database that stores the event data;
a display management unit that selects the notification data to which priority information with the highest priority is added from the event data stored in the event data database;
a display information generating unit that generates display information including the selected notification data;
having
A display system characterized by: The display management unit stops displaying the notification data whose display time limit has passed, and deletes the event data including the notification data whose display has been stopped from the event data database,
2. The display management unit repeats the selection of the notification data, the suspension of the display of the notification data, and the deletion of the event data until all the event data in the event data database are deleted. Display system as described. A server connected via a network to an event generating device capable of transmitting notification data indicating its own state and a display device,
a notification data acquisition unit that acquires the notification data;
an event queue database that accumulates the acquired notification data together with a queue number indicating the order of arrival thereof and manages it as an event queue;
Priority information including a priority to be notified to the user, a display period to be displayed, and an expiration period to be saved as an event queue is added to each of the notification data contained in the event queue accumulated in the event queue database. a priority granting unit to
an event queue management unit that monitors the expiration date contained in the event queues accumulated in the event queue database and deletes the event queue corresponding to the queue number whose expiration date has passed since the arrival of the notification data;
and an event data providing unit that provides the event queue managed by the event queue database as event data to the display device. A computer program that causes a computer to function as a display device connected via a network to an event generating device capable of transmitting notification data indicating its own state,
The display device
an event data acquisition unit for acquiring event data in which priority information including a priority to be notified to a user and a display deadline to be displayed is added to the notification data;
a database that stores the event data;
a display management unit that selects the notification data to which priority information with the highest priority is added from the event data stored in the database;
a display information generating unit that generates display information including the selected notification data;
with
The display management unit stops displaying the notification data whose display time limit has passed, and deletes the event data including the notification data whose display has been stopped from the database,
The display management unit repeats selection of the notification data, suspension of display of the notification data, and deletion of the event data until all event data in the database is deleted;
A computer program characterized by

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