CN103870850A - Electronic paper display device, processing module and data processing method thereof - Google Patents

Abstract

An electronic paper display device, a processing module and a data processing method thereof. The electronic paper display device comprises an antenna, a radio frequency identification tag, a processing module and a display module. The RFID tag receives a data signal through the antenna, which carries at least one character code. The processing module reads at least one character code from the RFID tag and converts the at least one character code into display data. The processing module generates a display control signal according to the display data. The display module receives the display control signal and displays a pattern according to the display control signal.

Description

Electronic paper display device, processing module and data processing method thereof

technical field

The invention relates to an electronic paper display device, a processing module and a data processing method thereof. More specifically, the electronic paper display device of the present invention can receive a data signal carrying a character code, and convert the character code into a display data, so as to generate a display control signal according to the display data, so that the display module displays the corresponding corresponding pattern. the

Background technique

In recent years, due to the advantages of thinness, durability, and low power consumption in line with energy conservation and environmental protection, electronic paper displays have been used in various applications on the market, such as: electronic labels for retail and electronic products for consumer electronics. book reader.

The existing electronic tag mainly includes an antenna, a radio frequency identification tag (radio frequency identification tag; RFID tag), a microcontroller (Microcontroller Unit; MCU) and a dot matrix display. The radio frequency identification tag receives and stores the RFID signal carrying the display data from the external RFID reader (Reader/Writer) through the antenna. The microcontroller reads the display data from the radio frequency identification tag to generate a display control signal to make the dot matrix display display corresponding patterns (text, barcode and/or various graphics).

However, since the size of the displayed data is usually several times the amount of data that can be stored in the RFID tag, the RFID reader must transmit part of the displayed data to the RFID tag several times successively, and the microcontroller It is necessary to read part of the display data from the radio frequency identification tag successively to obtain the complete display data. Accordingly, for a retail industry that employs a large number of electronic tags, it is quite time-consuming to use a small number of RFID readers to update the patterns displayed on a large number of electronic tags. If the number of RFID readers is increased, the cost of the overall equipment and the labor cost of operation will be greatly increased.

In view of this, how to improve the time spent on updating electronic tags is an urgent problem to be solved in the industry.

Contents of the invention

The object of the present invention is to provide an electronic paper display device, its processing module and data processing method. Specifically, the electronic paper display device provided by the present invention can receive a data signal carrying a character code, and display a corresponding pattern by converting the character code into a display data. Since the data volume of character codes is quite small (generally speaking, less than 10 times) compared to the data volume of display data, through the data processing method of the present invention, generally speaking, the RFID reader-writer only needs to transmit once. That is, the electronic paper display device can display a designated pattern, so as to greatly improve the time spent on updating the electronic label.

To achieve the above purpose, the present invention discloses an electronic paper display device, which includes an antenna, a radio frequency identification tag, a processing module and a display module. The radio frequency identification tag is coupled to the antenna for receiving a data signal through the antenna, wherein the data signal carries at least one character code. The processing module is electrically connected to the radio frequency identification tag for reading the at least one character code from the radio frequency identification tag, converting the at least one character code into a display data, and generating a display data according to the display data Displays control signals. The display module is electrically connected to the processing module for receiving the display control signal and displaying a pattern according to the display control signal.

In addition, the present invention further discloses a data processing method for an electronic paper display device. The electronic paper display device includes an antenna, a radio frequency identification tag, a processing module and a display module. The RFID tag is coupled to the antenna. The processing module is electrically connected to the radio frequency identification tag and the display module. The data processing method includes the following steps: (a) making the radio frequency identification tag receive a data signal through the antenna, wherein the data signal carries at least one character code; (b) making the processing module read from the radio frequency identification tag Take the data signal, convert the at least one character code into a display data, and generate a display control signal according to the display data; and (c) make the display module automatically receive the display control signal, and according to the display The control signal displays a pattern.

In addition, the present invention further discloses a processing module for an electronic paper display device. The processing module is used for reading at least one character code from a radio frequency identification tag, converting the at least one character code into a display data, and generating a display control signal according to the display data.

In addition, the present invention further discloses a data processing method for a processing module of an electronic paper display device. The data processing method includes the following steps: (a) reading at least one character code from the radio frequency identification tag; (b) converting the at least one character code into a display data; and (c) according to the display data, Generate a display control signal.

In order to make the above-mentioned purpose, technical features and advantages of the present invention more comprehensible, the following is a detailed description of preferred embodiments with accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of an electronic paper display device 1 according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of the display module 17 of the present invention;

FIG. 3 is a schematic diagram of an electronic paper display device 3 according to a second embodiment of the present invention;

FIG. 4 is a schematic diagram of an electronic paper display device 4 according to a third embodiment of the present invention;

FIG. 5 is a flowchart of a data processing method according to a fourth embodiment of the present invention; and

FIG. 6 is a flowchart of a data processing method according to a fifth embodiment of the present invention.

[Description of main component symbols]

1 Electronic paper display device 11 Antenna 13 Radio frequency identification tag

15 processing module 19 display module 100 data signal

102 character codes 104 display control signals 3 electronic paper display device

31 microcontroller 33 font integrated circuit 4 electronic paper display device

41 microcontroller 43 memory.

Detailed ways

The content of the present invention will be explained by the following examples, but the examples of the present invention are not intended to limit the present invention to be implemented in any specific environment, application or method as described in the following examples. Therefore, the descriptions of the following examples are only to illustrate the present invention, but not to limit the present invention. In the following embodiments and drawings, elements that are not directly related to the present invention have been omitted and not shown, and the dimensional ratios between the elements shown in the drawings are only for understanding, and are not intended to be limited to Actual implementation ratio.

A first embodiment of the present invention is shown in FIG. 1 , which is a schematic diagram of an electronic paper display device 1 . The electronic paper display device 1 includes an antenna 11 , a radio frequency identification (RFID) tag 13 , a processing module 15 and a display module 17 . The processing module 15 and the display module 17 receive the required operating voltage from an external power supply (such as a battery or a transformer).

The frequency bands used by the antenna 11 and the tag 13 can be industrial, scientific and medical (ISM) frequency band, low frequency (low frequency; LF) frequency band, high frequency frequency band (High frequency; HF) and ultra high frequency (Ultra High frequency) band. Frequency; UHF) frequency band one of them. In this embodiment, the frequency band used by the antenna 11 and the tag 13 is 860 MHz to 960 MHz.

The radio frequency identification tag 13 is coupled to the antenna 11, and receives a data signal 100 carrying one or more character codes 102 from an RFID reader (not shown) through the antenna 11, and stores the character code 102 to its memory (not shown). According to the characters of each country, the encoding of the character code 102 can be Big-5 encoding, ASCII encoding, JIS02081 encoding, GB23121 encoding, GB18030 encoding, Unicode encoding, etc. For example, the Big5 codes of the four characters "Yong", "Yi", "Ke" and "Tech" in traditional Chinese are "0xA5, 0xC3", "0xAB, 0xB3", "0xAC, 0xEC" in hexadecimal "0xA7, 0xDE".

The processing module 15 is electrically connected to the radio frequency identification tag 13 and the display module 17 . When the radio frequency identification tag 13 receives the data signal 100, it will generate a trigger signal to the processing module 15, so that the processing module 15 reads the character code 102 from the radio frequency identification tag 13 according to the trigger signal. After the character code 102, the processing module 15 converts the character code 102 into a display data, and then generates a display control signal 104 according to the display data. Next, the display module 17 receives the display control signal 104 and displays a pattern according to the display control signal 104 .

In this example, the display module 17 is a dot matrix display (as shown in FIG. 2 ). The processing module 15 converts the character code 102 into content (ie, display data) to be displayed on the dot-matrix display, so as to generate a display control signal 104 accordingly, so that the display module 17 displays corresponding patterns. For example, if the character code 102 is "0xA5, 0xC3", "0xAB, 0xB3", "0xAC, 0xEC" and "0xA7, 0xDE", the displayed data represents the status of each pixel of the dot matrix display, and the display The control signal 104 controls the dot-matrix display to display the four characters "Yong", "Yi", "Ke" and "Technology". It should be noted that, according to the combination of various character codes, the pattern displayed by the display module 17 can be characters, barcodes, patterns or any combination thereof.

Specifically, if the matrix display has 96 lines (Line), and each line has 200 dots (Dot), then the whole has 200*96 dot pixels. Since each dot pixel uses a bit to represent its status, the amount of display data required to be transmitted in the prior art is 200*96 bits, that is, 2400 Bytes. Taking the word "Yong" as an example, the displayed data represented by it are "0xC0, 0x00, 0x80, 0x01, 0x00, 0x02, 0xF0, 0x07, 0x00, 0x24, 0xF8, 0x35, 0x80, 0x15, 0x80, 0x0C, 0xC0, 0x0C .

Compared with the current technology, the present invention transmits character codes with only 2 bytes (ie "0xA5, 0xC3"), and then converts the character codes into display data, so that the display can display the same pattern. In this way, the present invention does not need to transmit part of the display data to the radio frequency identification tag multiple times successively, thereby greatly improving the time spent on updating the electronic tag.

In addition, when the electronic paper display device 1 switches from the power-off state to the power-on state, the processing module 15 also uses the operating voltage provided by the external power supply as a trigger signal to read the character code 102 from the radio frequency identification tag 13 . Furthermore, since the radio frequency identification tag 13 can operate without external power supply, when the electronic paper display device 1 is powered off, the radio frequency identification tag 13 can still receive data signals through the antenna 11 and store its information. The loaded character code.

In this case, when the electronic paper display device 1 switches to the power-on state, the processing module 15 will read the character code stored in the radio frequency identification tag, and further determine that the character code stored in the radio frequency identification tag is still Character code 102 may be a new character code. In other words, the processing module 15 compares the character code 102 stored by itself with the character code stored in the radio frequency identification tag. If the character code stored in the radio frequency identification tag is a new character code, the processing module 15 converts the new character code into new display data, and generates a new display control signal, so that the display module 17 according to The new display control signal displays the new pattern.

A second embodiment of the present invention is shown in FIG. 3 , which is a schematic diagram of an electronic paper display device 3 . The electronic paper display device 3 includes an antenna 11 , a radio frequency identification tag 13 , a processing module 15 and a display module 17 . Since the electronic paper display device 3 of the second embodiment is similar to the electronic paper display device 1 of the first embodiment, only the differences between the second embodiment and the first embodiment will be described below.

As shown in FIG. 3 , the processing module 15 of the electronic paper display device 3 further includes a microcontroller 31 and an integrated circuit 33 . The microcontroller 31 is electrically connected to the RFID tag 13 , the display module 17 and the font integrated circuit 33 . The microcontroller 31 reads the character code 102 from the RFID tag 13 and transmits the character code 102 to the font IC 33 . The font integrated circuit 33 stores a font data. The font integrated circuit 33 receives the character code 102 from the microcontroller 31 , converts the character code 102 into a display data 302 according to the font data, and sends it to the microcontroller 31 . Accordingly, the microcontroller 31 generates a display control signal 104 according to the display data 302 .

A third embodiment of the present invention is shown in FIG. 4 , which is a schematic diagram of an electronic paper display device 4 . The electronic paper display device 4 includes an antenna 11 , a radio frequency identification tag 13 , a processing module 15 and a display module 17 . Since the electronic paper display device 3 of the third embodiment is similar to the electronic paper display device 1 of the first embodiment, only the differences between the third embodiment and the first embodiment will be described below.

As shown in FIG. 4 , the processing module 15 of the electronic paper display device 4 includes a microcontroller 41 and a memory 43 . The microcontroller 41 is electrically connected to the RFID tag 13 , the display module 17 and the memory 43 . The microcontroller 41 reads the character code 102 from the RFID tag 13 . The memory 43 stores a font data. After reading the character code 102, the microcontroller 41 reads the font data from the memory 43, converts the character code 102 into display data according to the font data, and generates a display control signal 104 according to the display data.

A fourth embodiment of the present invention is shown in FIG. 5 , which is a flowchart of a data processing method. The data processing method described in this embodiment can be used in an electronic paper display device, for example: the electronic paper display device 1 of the first embodiment, the electronic paper display device 3 of the second embodiment, and the electronic paper display device of the third embodiment 4. The electronic paper display device includes an antenna, a radio frequency identification tag, a processing module and a display module. The radio frequency identification tag is coupled to the antenna. The processing module is electrically connected to the radio frequency identification tag and the display module.

Firstly, in step S501, make the radio frequency identification tag receive a data signal through an antenna, wherein the data signal carries at least one character code. Next, in step S503, the processing module reads at least one character code from the radio frequency identification tag, converts the at least one character code into a display data, and generates a display control signal according to the display data. In step S505, the display module automatically receives the display control signal, and displays a pattern according to the display control signal.

In addition to the above-mentioned steps, the data processing method of the fourth embodiment can also perform all the operations and functions described in the first to third embodiments, and those skilled in the art can directly understand how the fourth embodiment is based on the first The first embodiment to the third embodiment are used to perform the operations and functions, so details are not repeated here.

A fifth embodiment of the present invention is shown in FIG. 6 , which is a flowchart of a data processing method. The data processing method described in this embodiment can be used in a processing module of an electronic paper display device, for example: the electronic paper display device 1 of the first embodiment, the electronic paper display device 3 of the second embodiment, and the electronic paper display device of the third embodiment Electronic paper display device 4. The electronic paper display device includes an antenna, a radio frequency identification tag, a processing module and a display module. The radio frequency identification tag is coupled to the antenna for receiving a data signal carrying at least one character code through the antenna. The processing module is electrically connected to the radio frequency identification tag and the display module.

First, in step S601, at least one character code is read from the radio frequency identification tag. Next, in step S603, at least one character code is converted into a display data. In step S605, a display control signal is generated according to the display data.

In addition to the above steps, the data processing method of the fifth embodiment can also perform all the operations and functions described in the first to third embodiments, and those skilled in the art can directly understand how the fifth embodiment is based on the first The first embodiment to the third embodiment are used to perform the operations and functions, so details are not repeated here.

To sum up, the electronic paper display device of the present invention can receive the data signal carrying the character code, and convert the character code into a display data, so as to generate a display control signal according to the display data, so that the display module displays the corresponding corresponding pattern. In this way, compared with the current technology, in general, the present invention only needs to receive the data signal once from the RFID reader to make the electronic paper display device display the specified pattern, so as to greatly improve the requirements for updating electronic tags. time wasted.

The content described in the above embodiments is only used to illustrate some implementation aspects of the present invention and to explain the technical features of the present invention, and is not intended to limit the substantive protection scope of the present invention. Therefore, any change or equivalent arrangement that can be easily accomplished by those skilled in the art falls within the scope of the present invention, and the protection scope of the present invention is subject to the scope of the patent application.

Claims (24)

1. a display device of electronic paper, its feature comprises:

One antenna;

One RF identification label (radio frequency identification tag; RFID tag), be coupled to this antenna, in order to pass through this antenna reception one data signal, wherein this data signal is loaded with at least one character code;

One processes module, is electrically connected to this RF identification label, in order to read this at least one character code from this RF identification label, this at least one character code is converted to a display data, and according to this display data, produces a display control signal; And

One shows module, and electrically connect, to this processing module, in order to receive this display control signal, and shows a pattern according to this display control signal.

2. display device of electronic paper as claimed in claim 1, it is characterized in that: this processing module comprises a microcontroller and a character library integrated circuit (integrated circuit), this microcontroller is electrically connected to this RF identification label, this demonstration module and this character library integrated circuit, this character library integrated circuit is in order to store a font data, this microcontroller reads this at least one character code from this RF identification label, and transmit this at least one character code to this character library integrated circuit, this character library integrated circuit is according to this font data, this at least one character code is converted to this display data, and transmit this display data to this microcontroller, and this microcontroller is according to this display data, produce this display control signal.

3. display device of electronic paper as claimed in claim 1, it is characterized in that: this processing module comprises a microcontroller and a memory body, this memory body stores a font data, this microcontroller is electrically connected to this RF identification label, this demonstration module and this memory body, this microcontroller reads this at least one character code from this RF identification label, and read this font data from this memory body, and according to this font data, this at least one character code is converted to this display data, and according to this display data, produce this display control signal.

4. display device of electronic paper as claimed in claim 1, it is characterized in that: this RF identification label more stores this at least one character code, and this processing module is more in the time receiving an operating voltage by an external power source supply, reads this at least one character code from this RF identification label.

5. display device of electronic paper as claimed in claim 1, it is characterized in that: this RF identification label is more loaded with at least another data signal of another character code by this antenna reception, and store this at least another character code, this processing module more stores this at least one character code, and in the time receiving an operating voltage by an external power source supply, read this at least another character code from this RF identification label, and at least another character code is identical with this at least one character code to judge this, with not by this at least another character code be converted to another display data.

6. display device of electronic paper as claimed in claim 1, it is characterized in that: this RF identification label is more loaded with at least another data signal of another character code by this antenna reception, and store this at least another character code, this processing module more stores this at least one character code, and in the time receiving an operating voltage by an external power source supply, read this at least another character code from this RF identification label, and at least another character code is not identical with this at least one character code to judge this, with by this at least another character code be converted to another display data, and produce another display control signal, and this demonstration module more receives this another display control signal, and show another pattern according to this another display control signal.

7. the data processing method for a display device of electronic paper, this display device of electronic paper comprises an antenna, a RF identification label, is processed module and and shown module, this RF identification label is coupled to this antenna, this processing module is electrically connected to this RF identification label and this demonstration module, and this data processing method comprises the following step:

(a) make this RF identification label by this antenna reception one data signal, wherein this data signal is loaded with at least one character code;

(b) make this processing module read this at least one character code from this RF identification label, this at least one character code is converted to a display data, and according to this display data, produce a display control signal; And

(c) make this demonstration module from receiving this display control signal, and show a pattern according to this display control signal.

8. data processing method as claimed in claim 7, it is characterized in that: this processing module comprises a microcontroller and a character library integrated circuit, this microcontroller is electrically connected to this RF identification label, this demonstration module and this character library integrated circuit, this character library integrated circuit stores a font data, and this step (b) more comprises the following step:

(b1) make this microcontroller read this at least one character code from this RF identification label, and transmit this at least one character code to this character library integrated circuit;

(b2) make this character library integrated circuit according to this font data, this at least one character code is converted to this display data; And

(b3) make this microcontroller according to this display data, produce this display control signal.

9. data processing method as claimed in claim 7, it is characterized in that: this processing module comprises a microcontroller and a memory body, this microcontroller is electrically connected to this RF identification label, this demonstration module and this memory body, this memory body stores a font data, and this step (b) more comprises the following step:

(b4) make this microcontroller read this at least one character code from this RF identification label;

(b5) make this microcontroller read this font data from this memory body, and according to this font data, this at least one character code is converted to this display data; And

(b6) make this microcontroller according to this display data, produce this display control signal.

10. data processing method as claimed in claim 7, is characterized in that: this RF identification label more stores this at least one character code, and this data processing method more comprises the following step:

(d) make this processing module in the time receiving an operating voltage from an external power source supply, read this at least one character code from this RF identification label.

11. data processing methods as claimed in claim 7, more comprise the following step:

(e1) make this at least one character code of this processing module stores;

(e2) make this RF identification label be loaded with at least another data signal of another character code by this antenna reception, and store this at least another character code; And

(e3) make this processing module in the time receiving an operating voltage from an external power source supply, read this at least another character code from this RF identification label, and at least another character code is identical with this at least one character code to judge this, with not by this at least another character code be converted to another display data.

12. data processing methods as claimed in claim 7, more comprise the following step:

(e1) make this processing module more store this at least one character code;

(e2) make this RF identification label be loaded with at least another data signal of another character code by this antenna reception, and store this at least another character code; And

(e4) make this processing module in the time receiving an operating voltage from an external power source supply, read this at least another character code from this RF identification label, and at least another character code is not identical with this at least one character code to judge this, with by this at least another character code be converted to another display data, and according to this another display data, produce another display control signal.

13. 1 kinds of processing modules for a display device of electronic paper, in order to from a RF identification label, read at least one character code, and this at least one character code is converted to a display data, and according to this display data, produce a display control signal.

14. processing modules as claimed in claim 13, it is characterized in that: this processing module comprises a microcontroller and a character library integrated circuit, this microcontroller is electrically connected to this character library integrated circuit, this character library integrated circuit stores a font data, this microcontroller reads this at least one character code from this RF identification label, and transmit this at least one character code to this character library integrated circuit, this character library integrated circuit is according to this font data, this at least one character code is converted to this display data, and transmit this display data to this microcontroller, and this microcontroller is according to this display data, produce this display control signal.

15. processing modules as claimed in claim 13, it is characterized in that: this processing module comprises a microcontroller and a memory body, this microcontroller is electrically connected to this memory body, this memory body stores a font data, and this microcontroller reads this at least one character code from this RF identification label, and reads this font data from this memory body, and according to this font data, this at least one character code is converted to this display data, and according to this display data, produces this display control signal.

16. processing modules as claimed in claim 13, it is characterized in that: this RF identification label more stores this at least one character code, and this processing module is more in the time receiving an operating voltage from an external power source supply, reads this at least one character code from this RF identification label.

17. processing modules as claimed in claim 13, it is characterized in that: this RF identification label more stores at least another character code, this processing module more stores this at least one character code, and in the time receiving an operating voltage from an external power source supply, read this at least another character code from this RF identification label, and at least another character code is identical with this at least one character code to judge this, with not by this at least another character code be converted to another display data.

18. processing modules as claimed in claim 13, it is characterized in that: this RF identification label more stores at least another character code, this processing module more stores this at least one character code, and in the time receiving an operating voltage from an external power source supply, read this at least another character code from this RF identification label, and at least another character code is not identical with this at least one character code to judge this, with by this at least another character code be converted to another display data, and produce another display control signal.

19. 1 kinds of data processing methods, process module for one of a display device of electronic paper, and this data processing method comprises the following step:

(a), from a RF identification label, read at least one character code;

(b) this at least one character code is converted to a display data; And

(c), according to this display data, produce a display control signal.

20. data processing methods as claimed in claim 19, it is characterized in that: this processing module comprises a microcontroller and a character library integrated circuit, this microcontroller is electrically connected this character library integrated circuit, this character library integrated circuit is in order to store a font data, and this step (a) more comprises the following step:

(a1) make this microcontroller read this at least one character code from this RF identification label, and transmit this at least one character code to this character library integrated circuit;

This step (b) more comprises the following step:

(b1) make this character library integrated circuit according to this font data, this at least one character code is converted to this display data; And

This step (c) more comprises the following step:

(c1) make this microcontroller according to this display data, produce this display control signal.

21. data processing methods as claimed in claim 19, it is characterized in that: this processing module comprises a microcontroller and a memory body, this microcontroller is electrically connected this memory body, and this memory body stores a font data, and this step (a) more comprises the following step:

(a2) make this microcontroller read this at least one character code from this RF identification label;

This step (b) more comprises the following step:

(b2) make this microcontroller read this font data from this memory body, and according to this font data, this at least one character code is converted to this display data; And

This step (c) more comprises the following step:

(c2) make this microcontroller according to this display data, produce this display control signal.

22. data processing methods as claimed in claim 19, wherein this RF identification label more stores this data signal, and this data processing method more comprises the following step:

(d) in the time receiving an operating voltage from an external power source supply, read this at least one character code from this RF identification label.

23. data processing methods as claimed in claim 19, is characterized in that: this RF identification label more stores at least another character code, and this processing module more stores this at least one character code, and this data processing method more comprises the following step:

(e1), in the time receiving an operating voltage from an external power source supply, read this at least another character code from this RF identification label; And

(e2) at least another character code is identical with this at least one character code to judge this, taking not by this at least another character code as another display data.

24. data processing methods as claimed in claim 19, is characterized in that: this RF identification label more stores at least another character code, and this processing module more stores this at least one character code, and this data processing method more comprises the following step:

(e1), in the time receiving an operating voltage from an external power source supply, read this at least another character code from this RF identification label;

(e3) at least another character code is not identical with this at least one character code to judge this;

(e4) make this processing module by this at least another character code be converted to another display data; And

(e5) produce another display control signal.

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