CN110119262B - Display data updating method, control terminal, electronic tag and display system - Google Patents

Display data updating method, control terminal, electronic tag and display system Download PDF

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Publication number
CN110119262B
CN110119262B CN201910367126.5A CN201910367126A CN110119262B CN 110119262 B CN110119262 B CN 110119262B CN 201910367126 A CN201910367126 A CN 201910367126A CN 110119262 B CN110119262 B CN 110119262B
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China
Prior art keywords
data
tag
electronic tag
current
electronic
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CN201910367126.5A
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CN110119262A (en
Inventor
陈富军
容其贵
赵留帅
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BOE Technology Group Co Ltd
K Tronics Suzhou Technology Co Ltd
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BOE Technology Group Co Ltd
K Tronics Suzhou Technology Co Ltd
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Priority to CN201910367126.5A priority Critical patent/CN110119262B/en
Publication of CN110119262A publication Critical patent/CN110119262A/en
Priority to PCT/CN2020/088130 priority patent/WO2020224522A1/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Abstract

The application provides a display data updating method, a control end, an electronic tag and a display system, wherein the method applied to the control end comprises the following steps: generating response data based on the monitored wireless signals broadcast by the electronic tag; wherein: the wireless signal broadcast by the electronic tag includes an identification uniquely representing the electronic tag; extracting the identification in the response data; judging whether current label data associated with the identifier exists or not; if yes, communication connection with the electronic tag is established, and current tag data are issued to the electronic tag. The electronic tag sends the identification to the outside in a broadcasting mode, the control end can inquire the information stored by the control end according to the identification obtained by monitoring, and whether the current tag data is sent to the electronic tag corresponding to the identification is determined, so that the display content of the electronic tag can be updated. The current label data which needs to be updated of each electronic label is set at the control end, so that the display content of each electronic label can be automatically updated, and the updating efficiency of the label data is improved.

Description

Display data updating method, control terminal, electronic tag and display system
Technical Field
The application relates to the technical field of data transmission, in particular to a display data updating method, an electronic tag, a control end and a display system.
Background
The prices of goods sold in supermarkets may vary due to seasonal variations, proximity of expiration dates, and variations in marketing strategies; correspondingly, the price information displayed by the price label also needs to be replaced correspondingly.
Similarly, table cards such as those used in various meetings may need to be changed adaptively for different participants (in which case, the table card may also be considered a label).
At present, price labels and table cards are still manufactured in a hard copy mode, and display information of the price labels and the table cards needs to be changed into hard copy copies containing latest information; the process of making a hard copy replica and replacing the hard copy replica requires a lot of resources.
Currently, electronic labels or electronic table cards made with types of soft copy devices, such as ink screens, are used to avoid the waste of hard copy material. However, how to realize quick and convenient updating of a large number of electronic tags or electronic table board display content information is still a problem.
Disclosure of Invention
The method for updating the display data can solve the problem that the content of a large number of electronic tags and other similar soft copy data is quickly and conveniently updated.
In one aspect, the present application provides a method for updating display data, which is applied to a control end, and includes:
generating response data based on the monitored wireless signals broadcasted by the electronic tag; wherein: the wireless signal broadcast by the electronic tag comprises an identification uniquely representing the electronic tag;
extracting the identification in the response data;
judging whether current label data associated with the identifier exists or not;
if yes, establishing communication connection with the electronic tag, and issuing the current tag data to the electronic tag.
Optionally, the wireless signal broadcast by the electronic tag includes an update time of current display data of the electronic tag;
the judging whether the current tag data corresponding to the identifier exists includes: extracting the update time in the response data;
the determining whether there is current tag data corresponding to the identifier includes: judging whether current label data which are associated with the identification and have time attributes later than the updating time exist;
wherein: the updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated and displayed, or the time when the historical tag data corresponding to the current display data is manufactured.
Optionally, the method further includes: and after the current tag data are issued to the electronic tag, disconnecting the communication connection with the electronic tag, and/or deleting the current tag data associated with the tag information.
In another aspect, the present application provides a method for updating display data, applied to an electronic tag, including:
generating and broadcasting a wireless signal; the wireless signal includes an identification uniquely representing the electronic tag;
monitoring a connection request signal and generating connection request data; the connection request signal comprises the label information of a certain electronic label which is requested to be connected by the control terminal;
extracting the tag information in the connection request data;
judging whether the label information is the same as the self identification;
if so, establishing communication connection with the control end; receiving current label data issued by the control end;
and displaying the current label data.
Optionally, after receiving the current data tag sent by the control end, the communication connection with the control end is disconnected, and the wireless signal continues to be generated and broadcast.
Optionally, the wireless signal includes an update time of current display data of the electronic tag;
the updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated and displayed, or the time when the historical tag data corresponding to the current display data is manufactured.
Optionally, the identifier is a MAC address of the electronic tag, or a location address of the electronic tag, or product information used for identifying the electronic tag.
In another aspect, the present application provides a method for updating display data, including:
the electronic tag generates and broadcasts a wireless signal; the wireless signal includes an identification uniquely representing the electronic tag;
the control end generates response data based on the monitored wireless signals broadcast by the electronic tag;
the control terminal extracts the identification in the response data and judges whether the current label data associated with the identification exists or not;
if so, establishing communication connection between the control end and the electronic tag, and the control end issues the current tag data to the electronic tag and enables the electronic tag to display the current tag data.
Optionally, the wireless signal includes an update time of current display data of the electronic tag;
the judging whether there is current tag data associated with the identifier includes: judging whether current label data which are associated with the identification and have time attributes later than the updating time exist;
wherein: the updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated and displayed, or the time when the historical tag data corresponding to the current display data is manufactured.
Optionally, the method further includes: after the current tag data are issued to the electronic tag, the communication connection between the control end and the electronic tag is disconnected;
the electronic tag continues to generate and broadcast the wireless signal.
The application provides a control end for control electronic tags updates the display data, include:
a first wireless communication unit for generating response data based on the monitored wireless signal broadcasted by the electronic tag; wherein: the wireless signal broadcast by the electronic tag comprises an identification uniquely representing the electronic tag;
a first extraction unit configured to extract the identifier in the response data;
the first judging unit is used for judging whether current label data associated with the identifier exists or not;
the first wireless communication module is further configured to establish a communication connection with the electronic tag and issue the current tag data to the electronic tag when the judgment unit outputs a yes result.
Optionally, the wireless signal broadcast by the electronic tag includes an update time of current display data of the electronic tag;
the first extraction unit is further configured to extract the update time in the response data;
the first determining unit is configured to determine whether there is current tag data associated with the identifier, and includes: judging whether current label data which are associated with the identification and have time attributes later than the updating time exist;
wherein: the updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated and displayed, or the time when the historical tag data corresponding to the current display data is manufactured.
Optionally, the first communication unit is further configured to receive a return signal sent by the electronic tag, and generate return data;
the first judging unit is further configured to judge whether the return data includes tag data reception completion information;
the first communication unit is further configured to disconnect a communication connection with the electronic tag when it is determined that the return data includes tag data reception completion information.
The present application further provides an electronic tag, including:
a second wireless communication unit for generating and broadcasting a wireless signal; monitoring a connection request signal to generate connection request data; the wireless signal includes an identification uniquely representing the electronic tag; the connection request signal comprises the label information of a certain electronic label which is requested to be connected by the control terminal;
a second extracting unit configured to extract the tag information in the connection request data;
a second judging unit, configured to judge whether the tag information is the same as the identifier;
the second wireless communication unit is further configured to, in a case where the second judgment unit judges yes, establishing connection with the control end, and receiving current label data issued by the control end;
and the display unit is used for displaying the current label data.
Optionally, the second wireless communication unit is further configured to disconnect a communication connection with the control terminal after receiving the current tag data sent by the control terminal; and continuing to generate and broadcast the wireless signal.
Optionally, the signal broadcast by the second wireless communication unit includes an update time of the current display data of the display unit;
the updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated, or the time when the historical tag data corresponding to the current display data is manufactured.
Optionally, the identifier is a MAC address of the electronic tag, or a location address of the electronic tag, or product information used by the electronic tag for identification.
The application provides a display system, which comprises the control terminal and the electronic tag.
According to the method for updating the display data, the electronic tag sends the identifier of the electronic tag to the outside in a broadcasting mode, the control end can inquire the information stored in the electronic tag according to the identifier obtained through monitoring, and whether the current tag data are sent to the electronic tag corresponding to the identifier or not is determined, so that the display content of the electronic tag can be updated. The current label data which needs to be updated of each electronic label is set at the control end, so that the display content of each electronic label can be automatically updated, and the updating efficiency of the label data is improved.
Drawings
Fig. 1 is a schematic diagram of a possible application scenario provided by an embodiment of the present application;
FIG. 2 is a flowchart illustrating a method for updating display data according to an embodiment;
FIG. 3 is a flowchart of a method for updating display data according to the second embodiment;
FIG. 4 is a flowchart of a display data update method according to a third embodiment;
FIG. 5 is a flowchart of a display data update method according to a fourth embodiment;
fig. 6 is a schematic structural diagram of a control end provided in the fifth embodiment;
FIG. 7 is a schematic structural diagram of an electronic tag provided in the sixth embodiment;
wherein: 11-first wireless communication unit, 12-first extraction unit, 13-first judgment unit, 21-second wireless communication unit, 22-second extraction unit, 23-second judgment unit, 24-display unit.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.
For convenience of subsequent description, a brief description is first made of possible application scenarios and basic device structures of the embodiments of the method provided in the present application, and then the method provided in the embodiments of the present application is described later.
Fig. 1 is a schematic diagram of a possible application scenario provided in an embodiment of the present application. As shown in fig. 1, the electronic tag is installed on a supermarket shelf and used for displaying the price of the commodity in the corresponding position area. The electronic tags are arranged at different places of the goods shelf according to the arrangement mode of the goods; a large number of electronic tags make up an array of electronic tags.
In order to realize the updating of data in a large number of electronic tags, a control end is also arranged in the application scene; the control end can carry out wireless communication with each electronic tag, and the updating of the display data of the electronic tags is realized.
Example one
The method for updating display data provided by the embodiment is applied to a control end. FIG. 2 is a flowchart illustrating a method for updating display data according to an embodiment; as shown in fig. 2, the display data updating method provided by the present embodiment includes steps S101 to S104.
S101: response data is generated based on the monitored radio signal broadcast by the electronic tag.
In the power-on state of the electronic tag, the electronic tag generates broadcast data by using a communication unit of the electronic tag, and generates a wireless signal by a modulation mode after adding an identifier which uniquely identifies the electronic tag in the broadcast data and radiates the wireless signal to the environment.
The control terminal provided by the embodiment of the application comprises a first communication unit, wherein the first communication unit comprises a communication antenna and a signal processor, and can monitor wireless signals radiated in the surrounding environment and in a specific frequency band, demodulate the coupled wireless signals and generate response data corresponding to broadcast data.
In practical applications, the communication unit in the electronic tag and the first communication unit of the control end may be various known wireless communication units, such as a bluetooth communication unit.
S102: an identification in the response data is extracted.
After the response data are obtained, the control end analyzes the response data according to a preset protocol rule and obtains the identification in the response data. Because the identification has uniqueness, the control end can determine which electronic tag sends the wireless signal according to the identification.
S103: judging whether current label data associated with the identifier exists; if yes, executing S104; if not, the process continues to S101.
A storage unit is arranged in the control terminal, and the storage unit is used for storing the identifier of the electronic tag to be updated and the current tag data to be updated, and each current tag data has a corresponding identifier (note that, here, only each current tag data has a corresponding identifier, but not necessarily each identifier has a corresponding current identifier data).
After the identification is obtained, the control end searches the information of the storage unit according to the identification and judges whether the corresponding identification exists; if the corresponding identification exists, judging whether the identification has corresponding current label data; and if the corresponding label data is found, judging that the display content of the electronic label represented by the identifier needs to be updated.
S104: and establishing communication connection with the electronic tag, and sending the current tag data to the electronic tag.
After the electronic tags represented by the identifiers need to update the display content, the control end sends a connection establishment request signal to the corresponding electronic tags so as to establish communication connection with the corresponding electronic tags.
Specifically, the control end sends a request signal through the first communication unit, and adds the identifier or the MAC address corresponding to the identifier in the request signal to notify the corresponding electronic tag to establish communication connection with the control end.
The specific process of establishing the communication connection adopts corresponding steps according to different adopted communication units, which is not repeated herein, and related technologies can refer to the prior art.
After the control end establishes communication connection with the electronic tag, current tag data are issued to the electronic tag; after the electronic tag successfully receives the current tag data, the display content is updated by using the tag data, so that the current tag data can be displayed.
By adopting the method for updating the display data, the electronic tag sends the identifier of the electronic tag to the outside in a broadcasting mode, and the control terminal can inquire the information stored in the electronic tag according to the identifier obtained by monitoring and determine whether to send the current tag data to the electronic tag corresponding to the identifier, so that the display content of the electronic tag can be updated. The current label data which needs to be updated of each electronic label is set at the control end, so that the display content of each electronic label can be automatically updated, and the updating efficiency of the label data is improved.
In the embodiment of the application, each electronic tag broadcasts a wireless signal at a certain frequency; the control end randomly monitors wireless signals sent by each electronic tag and updates tag data corresponding to the electronic tags; and the display data content of each electronic tag is updated after a period of time.
Example two
The method for updating display data provided by the embodiment of the application is also applied to the control end side. FIG. 3 is a flowchart of a method for updating display data according to a second embodiment; as shown in fig. 3, the method provided by the second embodiment includes steps S201 to S204.
S201: response data is generated based on the monitored wireless signals broadcast by the electronic tag.
In the embodiment of the application, the electronic tag generates broadcast data by using a communication unit of the electronic tag, modulates the broadcast data and then generates a wireless signal, and radiates the wireless signal to the environment. The foregoing broadcast signal includes an identifier uniquely indicating the electronic tag and an update time of the current display data of the electronic tag.
The control terminal provided by the embodiment of the application comprises a first communication unit, wherein the first communication unit comprises a communication antenna and a signal processor, and can monitor wireless signals radiated in the surrounding environment and in a specific frequency band, demodulate the coupled wireless signals and generate response data corresponding to broadcast data.
S202: the identification and update time in the response data is extracted.
After the response data are obtained, the control end analyzes the response data according to a preset protocol rule, and obtains the identification and the updating time in the response data. Because the identification has uniqueness, the control end can determine which electronic tag sends the wireless signal and the update time of the display data of the corresponding tag according to the identification.
In this embodiment of the application, the update time is a creation time of history tag data corresponding to current display data of the electronic tag.
S203: judging whether label data which is associated with the identification and has a time attribute later than the updating time exists; if yes, executing S204; if not, S201 is executed.
The control end is internally provided with a storage unit, the storage unit is used for storing the identification of the electronic tag to be updated, the current tag data to be updated and the manufacturing time of the current tag data, and the current tag data has the corresponding identification.
After the identification is obtained, the control end searches the information of the storage unit according to the identification and judges whether a corresponding identification exists; if the corresponding identification exists, judging whether the identification has corresponding current label data; if the corresponding current label data is found, continuously judging whether the manufacturing time of the current label data is later than the updating time; and if the manufacturing time of the label is later than the updating time, judging that the display content of the electronic label represented by the identifier needs to be updated.
S204: and establishing communication connection with the electronic tag, and issuing current tag data to the electronic tag.
After the electronic tags represented by the identifiers need to update the display content, the control end sends a connection establishment request signal to the corresponding electronic tags so as to establish communication connection with the corresponding electronic tags.
After the control end establishes communication connection with the electronic tag, current tag data are issued to the electronic tag; and after the electronic tag successfully receives the current tag data, updating the display content according to the current tag data, so that the current tag data is displayed.
Besides the technical effects generated by the technical solution of the first embodiment, the technical solution provided by the second embodiment also has the following technical effects: after the identification is determined to have the corresponding current tag data, whether the data displayed by the electronic tag is the latest data or not is judged by comparing the date corresponding to the current tag data with the updating time later than the current display data of the electronic tag, and then whether the display content of the electronic tag needs to be updated or not is determined; if the display content of the electronic tag needs to be updated, establishing communication connection with the electronic tag; if the display content of the electronic tag does not need to be updated, the electronic tag is not connected with the electronic tag. The scheme avoids the problem that the control end is repeatedly connected with an electronic tag to send tag data.
In addition, by adopting the updating method provided by the embodiment of the application, the single data stored in the control terminal can be modified, and the convenience of data operation is realized.
In specific application, the control terminal can be in communication connection with a remote database, and information is downloaded from the remote database according to a preset time interval so as to update the label data information stored in the control terminal.
In the embodiment of the application, the updating time of the current display data of the electronic tag contained in the wireless signal is the manufacturing date of the historical tag data corresponding to the current display data; in other embodiments, the aforementioned update time may also be a time when the electronic tag receives historical tag data corresponding to the current display data, or a time when the current display data is updated.
In addition, in other embodiments, the electronic tag may not send the update time, but the control end deletes the corresponding current tag data after issuing the current tag data to the corresponding electronic tag.
As described above, the control end provided by the present application is used for connecting with a plurality of electronic tags, so as to update the display contents of the plurality of electronic tags; therefore, after executing S104 or S204, the control end may further disconnect the communication connection with the electronic tag, and listen to the wireless signal again to realize the connection with other electronic tags.
In specific implementation, in order to ensure that the data is correctly transmitted, the control end can disconnect the communication connection with the electronic tag after receiving a successful receiving message sent by the electronic tag.
EXAMPLE III
The method for updating display data provided by the embodiment is applied to the electronic tag. Fig. 4 is a flowchart of a display data updating method according to a third embodiment. As shown in fig. 4, the method provided by the present embodiment includes steps S301 to S306.
S301: wireless signals are generated and broadcast.
After the electronic tag is powered on to work, the electronic tag generates broadcast data by utilizing a communication unit of the electronic tag, adds an identifier which uniquely identifies the electronic tag in the optical ratio data, and then radiates the broadcast data to the environment in a wireless signal mode.
S302: and monitoring the connection request signal to generate connection request data.
After the control end receives the wireless signal and determines that the wireless signal needs to be connected with a specific electronic tag, connection request data is generated, the identification of the specific electronic tag is used as tag information and added to the connection request data, and the connection request data is modulated to generate a connection request signal.
The electronic tag monitors the connection request signal, demodulates the connection request signal after monitoring the connection request signal and generates connection request data.
S303: tag information in the connection request data is extracted.
And after the connection request data is obtained, the electronic tag extracts tag information according to a preset rule and uses the tag information for subsequent judgment.
S304: judging whether the label information is the same as the self identification; if yes, go to S305; if not, S301 and S302 are continuously executed.
If the label information is the same as the identification of the electronic label, the certification control end requests to establish communication connection with the electronic label; at this point, S305 may be executed.
S305: establishing communication connection with a control end; and receiving current label data issued by the control end.
S306: and displaying the current label data.
The process of establishing communication connection between the electronic tag and the control terminal is different according to different communication protocols and wireless communication modes adopted by the electronic tag and the control terminal, and reference may be made to the connection modes of different wireless communication protocols in the prior art, which is not repeated again.
The electronic tag establishes communication connection with the control end, and receives current tag data. And displaying the current tag data after the current tag data is received.
The display component of the electronic label for displaying the current label data can be various existing soft copy output structures, such as an LCD screen, an ink screen, and the like. The display component of the electronic label is preferably an ink screen in view of the advantages of low cost and low power consumption of the ink screen technology.
In the data updating method provided by the embodiment of the application, the electronic tag sends a broadcast signal to the surrounding environment to inform the control end of the own identifier, and if the control end needs to update the display data of the corresponding identifier, the identifier is used for establishing connection with the corresponding electronic tag, and the current tag data is issued. By adopting the method, under the condition that the quantity and the identification of the electronic tags in the actual environment are uncertain, the electronic tags serve as an active party to trigger the control end to start connection, and the automatic updating of the corresponding tag data is realized.
In a specific application, after S305 is executed, especially after the electronic tag verifies that the current tag data is successfully received, the communication connection with the control end may be disconnected, and the low-consumption state may be entered. After the low-consumption state is maintained for a certain time (for example, one day), the electronic tag continues to broadcast the wireless signal to detect whether there is a corresponding connection request signal, so as to update the display data again.
In addition, in some applications, for example, in the application of electronic table cards, the staff can also control the electronic tag to be powered on, and then whether to continue broadcasting the wireless signal or not can be started. In the embodiment of the application, the wireless signal broadcast by the electronic tag may include, in addition to the aforementioned identifier, the update time of the current display data; in a specific application, the update time may be a time when the electronic tag receives the historical tag data corresponding to the current display data, a time when the current display data is updated and displayed, and a time when the historical tag data corresponding to the current display data is created.
In a specific application, the identifier may be a MAC address of the electronic tag, a location address of the electronic tag, or product information used by the electronic tag for identification. The position address of the electronic tag can be the shelf position of a supermarket shelf and the row and column arrangement of the position of the electronic table card.
Example four
The display data updating method provided by the embodiment is used for a system consisting of a control terminal and an electronic tag. Fig. 5 is a flowchart of a display data updating method according to the fourth embodiment. As shown in fig. 5, the method provided by the present embodiment includes steps S401 to S405.
S401: the electronic tag generates and broadcasts a wireless signal.
After the electronic tag is powered on to work, the electronic tag generates broadcast data by using a communication unit of the electronic tag, adds an identifier which uniquely identifies the electronic tag in the optical ratio data, and then radiates the broadcast data to the environment in a wireless signal mode.
S402: the control terminal generates response data based on the monitored wireless signal broadcast by the electronic tag.
The control terminal provided by the embodiment of the application comprises a first communication unit, wherein the first communication unit comprises a communication antenna and a signal processor, and can monitor wireless signals radiated in the surrounding environment and in a specific frequency band, demodulate the coupled wireless signals and generate response data corresponding to broadcast data.
S403: the control end extracts the identification in the response data.
S404: judging whether current tag data associated with the identifier exists or not; if yes, go to S405; if not, the control end is enabled to execute S402, and the electronic tag is enabled to execute S401.
A storage unit is arranged in the control terminal, and the storage unit is used for storing the identifier of the electronic tag to be updated and the current tag data to be updated, and each current tag data has a corresponding identifier (note that, here, only each current tag data has a corresponding identifier, but not necessarily each identifier has a corresponding current identifier data).
After the identification is obtained, the control end searches the information of the storage unit according to the identification and judges whether the corresponding identification exists; if the corresponding identification exists, judging whether the identification has corresponding current label data; and if the corresponding label data is found, judging that the display content of the electronic label represented by the identifier needs to be updated.
S405: and establishing communication connection between the control end and the electronic tag, sending the current tag data to the electronic tag by the control end, and enabling the electronic tag to display the current tag data.
After the electronic tags represented by the identifiers need to update the display content, the control end sends a connection establishment request signal to the corresponding electronic tags so as to establish communication connection with the corresponding electronic tags.
After the control end establishes communication connection with the electronic tag, current tag data are issued to the electronic tag; and after the electronic tag successfully receives the current tag data, updating the display content according to the current tag data, so that the current tag data is displayed.
According to the method for updating the display data, the electronic tag sends the identifier of the electronic tag to the outside in a broadcasting mode, the control end can inquire the information stored in the electronic tag according to the identifier obtained through monitoring, and whether the current tag data is sent to the electronic tag corresponding to the identifier or not is determined, so that the display content of the electronic tag can be updated. The current label data which needs to be updated of each electronic label is set at the control end, so that the display content of each electronic label can be automatically updated, and the updating efficiency of the label data is improved.
Similar to the second embodiment and the third embodiment, in the method for updating display data provided in this embodiment, the wireless signal sent by the electronic tag may further include an update time of the current display data of the electronic tag; correspondingly, the step of determining whether the current tag data is associated with the identifier at S404 may include: and judging whether current label data which is associated with the identification and has a time attribute later than the updating time exists. The update time may be a time when the electronic tag receives the historical tag data corresponding to the current display data, a time when the current display data is updated and displayed, and a time when the historical tag data corresponding to the current display data is created.
After the identifier is determined to have the corresponding current tag data, judging whether the data displayed by the electronic tag is the latest data or not by comparing the date corresponding to the current tag data with the updating time later than the current display data of the electronic tag, and then determining whether the display content of the electronic tag needs to be updated or not; if the display content of the electronic tag needs to be updated, establishing communication connection with the electronic tag; if the display content of the electronic tag does not need to be updated, the electronic tag is not connected with the electronic tag. The scheme avoids the problem that the control end is repeatedly connected with an electronic tag to send tag data.
Furthermore, after S405 is executed, the communication connection between the control terminal and the electronic tag is disconnected, and the electronic tag may continue to generate and broadcast the wireless signal.
In the foregoing embodiments, the communication between the control end and the electronic tag may use an existing communication protocol, or may use some self-defined communication protocols, and the application is not limited in particular. In one specific application, the control terminal and the electronic tag adopt a Bluetooth communication protocol, and data transmitted by the protocol is appropriately modified.
Specifically, the transmission format includes a command format and a data format. The command format is as follows: AA + AA +00+ LengthH + Lengthl + A0+ Command (1) + Checksum (3) +0D +0A, wherein: AA +00 is the first three bytes of the Command, length is the Command length high byte, lengthL is the Command length low byte, A0 is the Command indicator, which occupies one byte, command is the specific Command parameter one byte, checksum occupies three bytes, and 0d +0a is the Command end symbol, which occupies two bytes. The data format is: AA + AA +00+ LengthH + LengthL +55+ AP + MAC (6) + DataCount (1) + DataNum (1) + Data (256) + CheckSum (3) +0D +0A, AA + AA +00 is three bytes of a Data packet header, lengthH is a high byte of the Data packet length, lengthL is a low byte of the Data packet length, 55 is one byte of a Data indication mark, AP is an indication that the AP sends a Data packet, MAC sends the Data packet to a specific electronic tag for the Data packet, the MAC takes 6 bytes, dataCount is a Data packet sequence number, dataNum is the total number of the Data packet, data takes 1-1024 bytes of the effective length of the Data packet, checkSum is a Data CheckSum, the MAC takes three bytes, and 0D 0A takes two bytes for a Data packet end mark.
EXAMPLE five
The embodiment of the application further provides a control terminal, which is used for controlling the electronic tag to update the display data. Fig. 6 is a schematic structural diagram of a control end provided in the fifth embodiment. As shown in fig. 6, the control terminal includes a first wireless communication unit 11, a first extraction unit 12, and a first judgment unit.
The first wireless communication unit 11 is configured to generate response data based on the monitored wireless signal broadcasted by the electronic tag; wherein: the radio signal broadcast by the electronic tag includes an identification uniquely representing the electronic tag.
The first extraction unit 12 is used for extracting the identification in the response data;
the first judgment unit 13 is configured to judge whether there is current tag data associated with the identifier.
In addition, the first wireless communication module is also used for establishing communication connection with the electronic tag and sending the current tag data to the electronic tag when the judgment unit outputs a yes result.
By adopting the control terminal provided by the embodiment of the application, after the electronic tag sends the self identification to the outside in a broadcasting mode, the control terminal can inquire the information stored by the control terminal according to the identification obtained by monitoring, and determine whether to send the current tag data to the electronic tag corresponding to the identification, so that the display content of the electronic tag can be updated.
Further, in the case that the wireless signal broadcasted by the electronic tag includes the update time of the current display data of the electronic tag, the first extraction unit 12 is further configured to extract the update time in the response data; the first judgment unit 13 judges whether there is current tag data associated with a tag having a time attribute later than the update time. The updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated and displayed, or the time when the historical tag data corresponding to the current display data is manufactured.
In addition, in some improvements, the first communication unit is further configured to receive a return signal sent by the electronic tag, and generate return data; the first judging unit 13 is further configured to judge whether the returned data includes tag data reception completion information; the first communication unit is also used for disconnecting the communication connection with the electronic tag when the returned data is judged to contain the tag data receiving completion information.
EXAMPLE six
The embodiment of the application also provides an electronic tag. Fig. 7 is a schematic structural diagram of an electronic tag provided in the sixth embodiment. As shown in fig. 7, the electronic tag includes a second wireless communication unit 21, a second extraction unit 22, a second judgment unit 23, and a display unit 24.
The second wireless communication unit 21 is for generating and broadcasting a wireless signal; and monitoring the connection request signal to generate connection request data. The wireless signal includes an identification uniquely representing the electronic tag; the connection request signal comprises the label information of a certain electronic label which is requested to be connected by the control terminal;
the second extraction unit 22 is configured to extract tag information in the connection request data;
the second judging unit 23 is configured to judge whether the tag information is the same as the identifier;
the second wireless communication unit 21 is further configured to establish a connection with the control end and receive current tag data sent by the control end if the second determination unit 23 determines that the result is yes;
the display unit 24 is used to display the current tag data.
By adopting the electronic tag provided by the embodiment of the application, the electronic tag sends a broadcast signal to the surrounding environment to inform the control end of the own identification, and if the control end needs to update the display data of the corresponding identification, the identification is used for establishing connection with the corresponding electronic tag and issuing the current tag data. By adopting the method, under the condition that the quantity and the identification of the electronic tags in the actual environment are uncertain, the electronic tags serve as an active party to trigger the control end to start connection, and the automatic updating of the corresponding tag data is realized.
In the wireless signal broadcast by the electronic tag provided in this embodiment, the identifier may be a MAC address of the electronic tag, a location address where the electronic tag is located, and product information used by the electronic tag for identification.
In addition, the wireless signal broadcast by the second wireless communication unit 21 may further include an update time of the current display data of the display unit 24. The updating time is the time when the electronic tag receives the historical tag data corresponding to the current display data, or the time when the current display data is updated, or the time when the historical tag data corresponding to the current display data is manufactured.
Besides providing the control terminal and the electronic tag, the embodiment of the application also provides a display system adopting the control terminal and the electronic tag; the composition of the display system is shown in the fifth embodiment and the sixth embodiment.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features and the technical features disclosed in this application but not limited to having similar functions are mutually replaced to form the technical solution.

Claims (18)

1. A method for updating display data is applied to a control end, and is characterized by comprising the following steps:
generating response data based on the monitored wireless signals broadcast by the electronic tag; wherein: the wireless signal broadcasted by the electronic tag comprises an identification uniquely representing the electronic tag and the update time of the current display data of the electronic tag;
extracting the identification and the update time in the response data;
judging whether current tag data associated with the identifier exists or not; the judging whether there is current tag data associated with the identifier includes: judging whether current tag data which is associated with the identification and has a time attribute later than the updating time exists;
if yes, when the electronic tag judges that the tag information in the connection request data is the same as the identifier of the electronic tag, establishing communication connection with the electronic tag, and issuing the current tag data to the electronic tag.
2. The method according to claim 1, wherein the update time is a time when the electronic tag receives history tag data corresponding to the current display data, or a time when the current display data is updated and displayed, or a time when the history tag data corresponding to the current display data is created.
3. The method for updating display data according to claim 1, further comprising:
and after the current tag data are issued to the electronic tag, disconnecting the communication connection with the electronic tag, and/or deleting the current tag data associated with the tag information.
4. A method for updating display data, which is applied to an electronic tag, is characterized in that,
generating and broadcasting a wireless signal; the wireless signal comprises an identification uniquely representing the electronic tag and the update time of the current display data of the electronic tag;
monitoring a connection request signal and generating connection request data; the connection request signal comprises the label information of a certain electronic label which is requested to be connected by the control terminal;
extracting the tag information in the connection request data;
judging whether the label information is the same as the self identification;
if so, establishing communication connection with the control end; receiving current label data issued by the control end;
and displaying the current label data.
5. The method for updating display data according to claim 4, wherein:
and after receiving the current data label issued by the control end, disconnecting the communication connection with the control end, and continuously generating and broadcasting the wireless signal.
6. The method according to claim 4 or 5, wherein the update time is a time when the electronic tag receives the historical tag data corresponding to the current display data, or a time when the current display data is updated and displayed, or a time when the historical tag data corresponding to the current display data is created.
7. The method for updating display data according to claim 4 or 5,
the identification is the MAC address of the electronic tag, or the position address of the electronic tag, or the product information used for identification by the electronic tag.
8. A method for updating display data, comprising:
the electronic tag generates and broadcasts a wireless signal; the wireless signal comprises an identification uniquely representing the electronic tag and the update time of the current display data of the electronic tag;
the control end generates response data based on the monitored wireless signals broadcast by the electronic tag;
the control terminal extracts the identification in the response data and judges whether the current label data associated with the identification exists or not; the determining whether there is current tag data associated with the identifier includes: judging whether current tag data which is associated with the identification and has a time attribute later than the updating time exists;
if yes, when the electronic equipment judges that the label information in the connection request data is the same as the identification of the electronic equipment, communication connection between the control end and the electronic label is established, the control end issues the current label data to the electronic label, and the electronic label displays the current label data.
9. The method for updating display data according to claim 8, wherein the update time is a time when the electronic tag receives history tag data corresponding to the current display data, or a time when the current display data is updated and displayed, or a time when the history tag data corresponding to the current display data is created.
10. The method for updating display data according to claim 8, wherein:
after the current tag data are issued to the electronic tag, the communication connection between the control end and the electronic tag is disconnected;
the electronic tag continues to generate and broadcast the wireless signal.
11. A control terminal is used for controlling an electronic tag to update display data, and is characterized by comprising:
a first wireless communication unit for generating response data based on the monitored wireless signal broadcasted by the electronic tag; wherein: the wireless signal broadcasted by the electronic tag comprises an identification uniquely representing the electronic tag and the update time of the current display data of the electronic tag;
a first extraction unit configured to extract the identifier and the update time in the response data;
the first judging unit is used for judging whether current label data associated with the identifier exists or not; the first judging unit is specifically configured to judge whether there is current tag data that is associated with the identifier and has a time attribute later than the update time;
the first wireless communication unit is further configured to, when the determining unit outputs a yes result, establish a communication connection with the electronic tag when the electronic device determines that the tag information in the connection request data is the same as the identifier of the electronic device, and issue the current tag data to the electronic tag.
12. The control end according to claim 11, wherein the update time is a time when the electronic tag receives history tag data corresponding to the current display data, or a time when the current display data is updated and displayed, or a time when the history tag data corresponding to the current display data is created.
13. The control terminal of claim 11, wherein:
the first wireless communication unit is also used for receiving a return signal sent by the electronic tag and generating return data;
the first judging unit is further configured to judge whether the return data includes tag data reception completion information;
the first wireless communication unit is further configured to disconnect communication connection with the electronic tag when it is determined that the return data includes tag data reception completion information.
14. An electronic tag, comprising:
a second wireless communication unit for generating and broadcasting a wireless signal; monitoring a connection request signal to generate connection request data; the wireless signal comprises an identifier uniquely representing the electronic tag and the update time of the current display data of the display unit; the connection request signal comprises the label information of a certain electronic label which is requested to be connected by the control terminal;
a second extracting unit configured to extract the tag information in the connection request data;
a second judging unit, configured to judge whether the tag information is the same as the identifier;
the second wireless communication unit is further configured to, in a case where the second judgment unit judges yes, establishing connection with the control end, and receiving current label data issued by the control end;
and the display unit is used for displaying the current label data.
15. The electronic tag according to claim 14, characterized in that:
the second wireless communication unit is also used for disconnecting the communication connection with the control end after receiving the current label data sent by the control end; and continuing to generate and broadcast the wireless signal.
16. The electronic tag according to claim 14 or 15, wherein the update time is a time when the electronic tag receives history tag data corresponding to the current display data, or a time when the current display data is updated, or a time when the history tag data corresponding to the current display data is created.
17. An electronic label according to claim 14 or 15, characterized in that:
the identification is the MAC address of the electronic tag, or the position address of the electronic tag, or the product information used by the electronic tag for identification.
18. A display system comprising a control terminal according to any one of claims 11-13, and an electronic label according to any one of claims 14-17.
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