TWI482447B - Method for broadcasting messages - Google Patents

Description

Message broadcasting method

The present invention relates to a message broadcasting method, and more particularly to a message broadcasting method capable of reducing the amount of broadcast data.

The traffic message broadcasting mechanism collects the traffic event information provided by each traffic management unit by a server, converts the traffic event message into binary digit data, and then broadcasts it through a specific frequency band to receive the traffic event message. The driver knows the traffic events and traffic flow that occur on the existing road. A traffic incident message is divided into an index data and an event data. The index data contains a code of a region, and the region code corresponds to a predetermined road map. The event data includes an encoding of an event and a coding of a location of the event and a coding of a direction of travel. The event code may be a category of traffic events that occur, such as a car accident, and the location code corresponds to a traffic event on the predetermined road map. A clear position on the road, and the driving direction code corresponds to the direction of travel on the road on which the traffic event occurs on the predetermined road map, such as forward or reverse. After the driver's receiver receives the traffic event message, the receiver can search for the corresponding comparison table in the stored traffic information comparison table according to the area code included in the index data, and then search and index the data on the comparison table. The corresponding event data is corresponding to the content on the comparison table, so that the content represented by the traffic event message can be displayed to the driver, for example, the type, location and driving direction of the traffic event are displayed.

Please refer to Figure 1. Figure 1 is a schematic diagram of a broadcast traffic event message for a conventional traffic message broadcast method. As shown in FIG. 1, the conventional traffic message broadcasting method sequentially arranges the received plurality of traffic event messages M to form one data group G1, and the index data D of the traffic event message M are respectively arranged in the phase. Before each corresponding event data E, the broadcasting system 100 broadcasts a plurality of traffic event messages M in the data group G1 within a broadcast period (for example, 5 minutes), and at the next broadcast period, the broadcasting system 100 The traffic event message M in the data group G1 is updated and sequentially arranged into another data group G2 for broadcast transmission. However, the transmission bandwidth of the broadcasting system 100 has its limitation. When broadcasting, the number of traffic event messages M in the data group G1 to be broadcasted by the system 100 is too large, the broadcasting system 100 may not be able to put data in one broadcast period. All traffic event messages M in group G1 are broadcast and broadcast, resulting in the driver not being able to immediately know all the instant traffic event messages.

The present invention provides a message broadcasting method, including receiving a plurality of event messages, each event message including an index data and an event data; and integrating the event information including the same index data in the plurality of event messages into a first data string, The plurality of index data of the first data string are arranged before the plurality of event data of the first data string; deleting at least one index data of the first data string to generate a second data string; and broadcasting the second data string.

Compared with the prior art, the message broadcasting method of the present invention can integrate a plurality of event messages including the same index data and delete part of the index data to reduce the amount of data broadcasted, thereby enabling the broadcasting system to broadcast and transmit more pens in one cycle. Event messages to improve the efficiency of the broadcasting system.

Please also refer to Figures 2 and 3. 2 is a schematic diagram of a message broadcast method of the present invention for integrating a plurality of traffic event messages including the same index data into a first data string, and FIG. 3 is a message broadcast method of the present invention for deleting a index data of a first data string to generate a second Schematic diagram of the data string. As shown in the figure, if the index data D1 of the N traffic event messages M are the same, the message broadcast method of the present invention can integrate the N traffic event messages M including the same index data D1 into a first data string S1, and In a data string S1, N index data D1 are arranged before N event data E. The message broadcasting method of the present invention may further delete part of the index data D1 in the first data string S1 (for example, delete K, K is smaller than N) to generate a second data string S2, and the number of index data in the second data string S2. (NK) is less than the number N of event and location data. Since the index data D1 in the second data string S2 is the same, even if the number (NK) of the index data D1 is smaller than the number N of the event and location data E, the receiver of the driver (receiving end) receives the second data string. After S2, the receiver can know the type, location and driving direction of the N traffic events M according to the index data D1 and the event data E.

In the embodiment of the present invention, the number K of deletions of the index data D1 of the first data string S1 is not limited as long as the second data string S2 includes more than one index data D1. The method of the present invention can delete the partial index data D1 in the first data string S1 according to the number of traffic event messages M including the same index data D1 and a predetermined ratio to generate the second data string S2. For example, if the number of traffic event messages M including the same index data D1 is 90, the ratio of the number of index data D1 in the second data string S2 to the number of event data E may be 2:3; The number of traffic event messages M of the same index data D1 is 150, and the ratio of the number of index data D1 in the second data string S2 to the number of event data E may be 1:2.

Please refer to FIG. 4, which is a schematic diagram of a broadcast traffic event message according to the message broadcast method of the present invention. As shown in FIG. 4, after generating the second data string S2, the broadcast system 200 can arrange the second data string S2 and other data string S3 or other traffic event messages in the traffic event message M that do not contain the same index data into one data. The group G3 is broadcasted and transmitted to speed up the update of the data at the receiving end, and enables the driver to quickly grasp the category, location and driving direction of more traffic events through the receiving end.

After receiving the data group G3, the receiver can determine the index data D corresponding to the event data E according to the arrangement of the index data D and the event data E. For example, when the receiver reads the data group G3, the index data arranged in front of the event data E of the data string S2 is D1, so the receiver determines that the index data D1 corresponds to the event data E of the data string S2. The index data arranged in front of the event data E of the data string S3 is D2, so the receiver determines that the index data D2 is the index data corresponding to the event data E of the data string S3. Similarly, in other traffic event messages M, the index data D arranged in front of the event data E is its corresponding index data, and the receiver at the receiving end can encode the index according to the event code and position code contained in the event data. The event table corresponding to the event category code of the data searches for the event and location information corresponding to the event code and the location code, and can provide the driver with information about the occurrence of the immediate traffic event.

According to the above configuration, the message broadcasting method of the present invention can reduce the amount of broadcast data. For example, if the index data D and the event data E of each traffic event message M are both the 104-bit binary digit data, then each traffic event message M is 208 bits in total. If the number of traffic event messages M containing the same index data D1 is 90, the data amount of the original 90 traffic event messages M is 18,720. Assuming that 30 index data D1 are deleted to generate the second data string S2, the data amount of the second data string S2 is 15600 bits, and the data amount of the second data string S2 is 3120 bits less. That is, in a broadcast cycle, the traffic message broadcasting method of the present invention can transmit 15 more traffic event messages M.

When the efficiency of the broadcast system is improved, the broadcast system can provide more event messages in one broadcast cycle, such as providing other types of event messages, such as event information of the consumer category. For example, the event message of the consumption category corresponds to the encoding of a specific index data, and the receiver of the receiving end also stores a comparison table of the consumption category, and the comparison table of the consumption category corresponds to the encoding of the specific index data. When the receiver of the receiving end receives the index of the index data corresponding to the event information broadcasted by the broadcast system, the receiver of the receiving end can compare the event code and the position code contained in the event data to the consumption category. The table searches for the corresponding event and location information to provide the driver with immediate consumption related information.

Please refer to FIG. 5, which is a flowchart 500 of the message broadcasting method of the present invention. The process of the message broadcast method of the present invention is as follows: Step 510: Receive a plurality of event messages, each event message includes an index data and an event data; Step 520: The event message including the same index data in the plurality of event messages Integrating a first data string, wherein the plurality of index data of the first data string are arranged before the plurality of event data; and step 530: deleting at least one index data of the first data string to generate a second data string; and 540: The broadcast transmits the second data string.

Compared with the prior art, the message broadcasting method of the present invention can integrate a plurality of event messages including the same index data and delete part of the index data to reduce the amount of data broadcasted, thereby enabling the broadcasting system to broadcast and transmit more pens in one cycle. Event messages to improve the efficiency of the broadcasting system.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100,200. . . Broadcasting system

D. . . Index data

E. . . Event data

M. . . Traffic event message

G1. . . Data group

G2. . . Data group

G3. . . Data group

S1, S2, S3. . . Data string

500. . . flow chart

510 to 540. . . step

Figure 1 is a schematic diagram of a conventional traffic message broadcast method for broadcasting traffic event messages.

FIG. 2 is a schematic diagram of the message broadcast method of the present invention integrating a plurality of traffic event messages including the same index data into a first data string.

FIG. 3 is a schematic diagram of deleting the index data in the first data string to generate a second data string according to the message broadcast method of the present invention.

FIG. 4 is a schematic diagram of a broadcast event message of the message broadcast method of the present invention.

Figure 5 is a flow chart of the message broadcasting method of the present invention.

500. . . flow chart

510 to 540. . . step

Claims (10)

A method for broadcasting a message, comprising: receiving a plurality of event messages, each event message comprising an index data and an event data; and integrating the event information including the same index data in the plurality of event messages into a first data string, the first The plurality of index data of the data string are arranged before the plurality of event data of the first data string; only the at least one index data of the first data string is deleted to generate a second data string; and the second data string is broadcasted and transmitted. . The method of claim 1, wherein the index data of each event message includes an area code, and the event data of each event message includes an encoding of an event and a coding of a location of the event and a coding of a direction of travel. . The method of claim 1, wherein deleting at least one index data in the first data string to generate the second data string is to delete the first information according to the number of event messages including the same index data and a predetermined ratio. Part of the index data in the data string to generate the second data string. The method of claim 1, wherein the index data and the event data of each event message are binary data. The method of claim 1, wherein the index data and the event data of each event message are 104 bits. The method of claim 1, wherein the index data of each event message includes an encoding of an event category, and the event data of each event message includes an encoding of an event and a coding of a location of the event. The method of claim 1, further comprising storing a plurality of comparison tables corresponding to the index data of the plurality of event messages at a receiving end. The method of claim 7, further comprising: the receiving end searching for a corresponding comparison table according to the index data of the plurality of event messages; and the receiving end searching for the corresponding comparison table according to the event data of the plurality of event messages The corresponding event and location message. The method of claim 1, wherein the broadcasting the second data string is to arrange the second data string and the data string including the other same index data in the plurality of event information into a data group for broadcast transmission. . The method of claim 1, wherein the broadcasting the second data string is to arrange the second data string and other event information of different index data in the plurality of event information into a data group for broadcast transmission. .