CN107039005B - electronic paper display device, information transmission system and method thereof - Google Patents
electronic paper display device, information transmission system and method thereof Download PDFInfo
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Abstract
the invention provides an electronic paper display device, an information transmission system and an information transmission method. The electronic paper display device is used for transmitting encrypted information. The electronic paper display device comprises an electronic paper display panel and a display driver. The electronic paper display panel is used for displaying a first image picture or a second image picture. The display driver is electrically connected to the electronic paper display panel and is used for outputting a driving signal to the electronic paper display panel. The display driver drives the electronic paper display panel by using the driving signal to alternately display the first image picture and the second image picture during the information transmission period so as to transmit the encrypted information. The encrypted information transmitted by the electronic paper display device is difficult to copy and steal, and the security of information transmission can be improved by a plurality of security measures.
Description
Technical Field
the present invention relates to an information delivery method, and more particularly, to an information delivery system and method for delivering encrypted information using an electronic paper display device.
Background
The electronic paper display device is a novel display device, and has the advantages of high color contrast ratio, high resolution, low power consumption and low manufacturing cost. In recent years, as display devices have gradually become lighter and thinner, electronic paper display devices have become a display device that meets the public demand. The electronic paper display device has advantages of being light, thin, durable, energy-saving, environment-friendly, and low in power consumption, and is widely used in electronic readers (e.g., electronic books, electronic newspapers) or other electronic components (e.g., electronic tags). Among the application fields of electronic tags, the most common Identification technology is Radio Frequency Identification (RFID) technology, for example.
the rfid technology is implemented by mounting an Integrated Circuit (IC) chip (chip), and can read information of the IC chip wirelessly by a reader or a reader/writer. However, some IC chips that require security may be analyzed without authorization and their stored security information copied.
therefore, under the technology of using the electronic paper display device as the electronic tag, how to design the electronic paper display device to transmit the encrypted information in a more secure manner is a problem to be overcome.
Disclosure of Invention
Embodiments of the present invention provide an electronic paper display device, an information delivery system and a method thereof. The electronic paper display device and the system thereof transmit encrypted information by alternately displaying different image frames.
The embodiment of the invention provides an electronic paper display device which is used for transmitting encrypted information. The electronic paper display device comprises an electronic paper display panel and a display driver. The electronic paper display panel is used for displaying a first image picture or a second image picture. The display driver is electrically connected to the electronic paper display panel and is used for outputting a driving signal to the electronic paper display panel. The display driver drives the electronic paper display panel by using the driving signal to alternately display the first image picture and the second image picture during the information transmission period so as to transmit the encrypted information.
In an embodiment of the invention, the encrypted information includes a combination of a first image and a second image displayed during information transmission.
in an embodiment of the invention, the driving signal includes a first information level and a second information level. The display driver drives the electronic paper display panel to display a first image picture by using the driving signal of the first information level. The display driver drives the electronic paper display panel to display a second image picture by using the driving signal of the second information level.
in an embodiment of the invention, the display driver drives the electronic paper display panel by using a driving signal with a first frequency, so that the electronic paper display panel transmits the encoded information in the encrypted information. The display driver drives the electronic paper display panel with a driving signal of a second frequency so that the electronic paper display panel transmits another encoded information of the encrypted information. The first frequency is not equal to the second frequency.
in an embodiment of the invention, the display driver drives the electronic paper display panel by using a plurality of driving signals with different frequencies, so that the electronic paper display panel transmits one of the plurality of encoded information in the encrypted information. The coded information transmitted by the electronic paper display panel is determined according to the combination of different frequencies.
In an embodiment of the invention, the electronic paper display panel further includes a plurality of display areas. The display driver drives each display area of the electronic paper display panel to alternately display the first image picture and the second image picture by using the driving signal, so that the electronic paper display panel transmits one of the plurality of pieces of coded information in the encrypted information. The coding information transmitted by the electronic paper display panel is determined according to the combination of the first image picture and the second image picture displayed by the display area.
The embodiment of the invention provides an information transmission system which is used for transmitting encrypted information. The information transmission system comprises an electronic paper display device and an image sensing device. The electronic paper display device is used for alternately displaying a first image and a second image during the information transmission period so as to transmit encrypted information. The image sensing device is connected (signally connected) to the electronic paper display device for receiving the encrypted information and decoding the encrypted information to obtain information included in the encrypted information.
In an embodiment of the invention, the encrypted information includes a combination of a first image and a second image displayed by the electronic paper display device during information transmission.
In an embodiment of the invention, the electronic paper display device is driven by a driving signal. The driving signal comprises a first information level and a second information level. The driving signal of the first information level drives the electronic paper display device to display a first image picture. The driving signal of the second information level drives the electronic paper display device to display a second image picture.
In an embodiment of the invention, the electronic paper display device is driven by a driving signal. The driving signal includes a first frequency and a second frequency. The driving signal of the first frequency drives the electronic paper display device to transmit the coded information in the encrypted information. The driving signal of the second frequency drives the electronic paper display device to transmit other encoding information in the encrypted information. The first frequency is not equal to the second frequency.
In an embodiment of the invention, the electronic paper display device is driven by a driving signal with a plurality of different frequencies to transmit one of a plurality of encoded information in the encrypted information. The coded information transmitted by the electronic paper display device is determined according to the combination of different frequencies.
In an embodiment of the invention, the electronic paper display device includes an electronic paper display panel. The electronic paper display panel includes a plurality of display regions. The display areas alternately display the first image picture and the second image picture, so that the electronic paper display device transmits one of the plurality of pieces of coded information in the encrypted information. The coding information transmitted by the electronic paper display device is determined according to the combination of the first image picture and the second image picture displayed by the display area.
In an embodiment of the invention, the image sensing apparatus includes an image sensor and a data processor. The image sensor is configured to receive the encrypted information and output the encrypted information. The data processor is electrically connected to the image sensor and used for decoding the encrypted information to obtain the information included in the encrypted information.
In an embodiment of the invention, the image sensor transmits the sensing signal to the electronic paper display device, and the electronic paper display device feeds the sensing signal back to the image sensor, so that the image sensor receives the encrypted information. The electronic paper display device displaying the first image picture absorbs at least part of the sensing signal, and the electronic paper display device displaying the second image picture reflects at least part of the sensing signal.
The embodiment of the invention provides an information transmission method which is used for transmitting encrypted information. The information transmission method firstly drives the electronic paper display device to alternately display a first image picture and a second image picture during information transmission so as to transmit encrypted information. Then, the encrypted information is received and decoded to obtain the information included in the encrypted information.
in an embodiment of the invention, the encrypted information includes a combination of a first image and a second image displayed by the electronic paper display device during information transmission.
In an embodiment of the invention, in the step of driving the electronic paper display device to alternately display the first image frame and the second image frame during the information transmission period, the electronic paper display device is driven by a driving signal. The driving signal comprises a first information level and a second information level. The driving signal of the first information level drives the electronic paper display device to display the first image picture, and the driving signal of the second information level drives the electronic paper display device to display the second image picture.
In an embodiment of the invention, in the step of driving the electronic paper display device to alternately display the first image frame and the second image frame during the information transmission period, the electronic paper display device is driven by a driving signal. The driving signal includes a first frequency and a second frequency. The driving signal of the first frequency drives the electronic paper display device to transmit the coded information in the encrypted information, and the driving signal of the second frequency drives the electronic paper display device to transmit the other coded information in the encrypted information. The first frequency is not equal to the second frequency.
In an embodiment of the invention, in the step of driving the electronic paper display device to alternately display the first image frame and the second image frame during the information transmission period, the electronic paper display device is driven by a plurality of driving signals with different frequencies to transmit one of the plurality of encoded information in the encrypted information. The coded information transmitted by the electronic paper display device is determined according to the combination of different frequencies.
In an embodiment of the invention, the electronic paper display device includes an electronic paper display panel. The electronic paper display panel includes a plurality of display regions. In the step of driving the electronic paper display device to alternately display the first image picture and the second image picture during the information transfer period, the display areas alternately display the first image picture and the second image picture, so that the electronic paper display device transfers one of the plurality of pieces of encoded information in the encrypted information. The coding information transmitted by the electronic paper display device is determined according to the combination of the first image picture and the second image picture displayed by the display area.
In an embodiment of the invention, in the step of receiving the encrypted information and decoding the encrypted information to obtain the information included in the encrypted information, the sensing signal is first transmitted to the electronic paper display device, and then the sensing signal fed back by the electronic paper display device is received to receive the encrypted information. The electronic paper display device displaying the first image picture absorbs at least part of the sensing signal, and the electronic paper display device displaying the second image picture reflects at least part of the sensing signal.
Based on the above, in the embodiment of the invention, the information delivery system alternately displays different image frames by using the electronic paper display device, encrypts the information to be delivered in the alternately displayed image frames to deliver the encrypted information, and improves the security of information delivery.
in order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic view of an electronic paper display device according to an embodiment of the present invention;
FIG. 2A is a schematic diagram of an electronic paper display panel driven by a driving signal to display a first image according to an embodiment of the present invention;
FIG. 2B is a schematic diagram of the electronic paper display panel driven by a driving signal to display a second image according to an embodiment of the invention;
FIG. 3A is a waveform diagram of a driving signal corresponding to encoded information according to an embodiment of the present invention;
FIG. 3B is a schematic waveform diagram of a driving signal corresponding to encoded information according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of an information delivery system according to an embodiment of the present invention;
FIG. 5 is a flow chart illustrating a method of information delivery according to an embodiment of the present invention;
Fig. 6 is a schematic diagram of an electronic paper display panel including a plurality of display areas according to an embodiment of the invention.
Description of reference numerals:
100. 410: an electronic paper display device;
110. 412, 610: an electronic paper display panel;
120. 414: a display driver;
400: an information delivery system;
420: an image sensing device;
422: an image sensor;
424: a data processor;
f1, f 2: frequency;
A1, a2, A3, a 4: a display area;
T1, T2, T3, T4: a signal transmission period;
and (2) DS: a drive signal;
DD: information;
v1: a first information level;
v2: a second information level;
s510, S520: the steps of the information delivery method.
Detailed Description
reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Further, wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic diagram of an electronic paper display device according to an embodiment of the present invention. Referring to fig. 1, in the present embodiment, an electronic paper display device 100 includes an electronic paper display panel 110 and a display driver 120. The e-paper display panel 110 is driven by the display driver 120 to display a first image frame or a second image frame. In the embodiment of the invention, the electronic paper display panel 110 uses black display particles and white display particles as display media, respectively. In the present embodiment, for example, a black image screen and a white image screen displayed on the electronic paper display panel 110 are respectively used as an example of the first image screen and the second image screen, but the present invention is not limited thereto.
In the present embodiment, the display driver 120 is electrically connected to the e-paper display panel 110 for outputting the driving signal DS to the e-paper display panel 110. In this embodiment, the display driver 120 may be provided with an information generator, and the information generator generates internal information for the display driver 120 to output the driving signal DS to the e-paper display panel 110. In one embodiment, the display driver 120 may also receive external information and provide the output driving signal DS to the e-paper display panel 110 according to the received external information. The present invention does not limit the manner in which the display driver 120 generates and outputs the driving signal DS. Therefore, in the present embodiment, the display driver 120 drives the electronic paper display panel 110 with the driving signal DS to alternately display the first image frame and the second image frame during the information transmission period to transmit the encrypted information.
Specifically, in the present embodiment, the driving signal DS includes the first information level V1 and the second information level V2, as shown in fig. 1, but the present invention is not limited thereto. The display driver 120 drives the electronic paper display panel 110 to display the first image picture by using the driving signal DS of the first information level V1. The display driver 120 drives the electronic paper display panel 110 to display the second image screen by using the driving signal DS at the second information level V2.
In detail, since the electronic paper display panel 110 of the embodiment uses the black display particles and the white display particles as the display medium, when the electronic paper display panel 110 is under the action of the negative field, a white image is displayed, and when the electronic paper display panel 110 is under the action of the positive field, a black image is displayed, therefore, the driving signal DS of the embodiment includes the first information level V1 and the second information level V2, wherein the first information level V1 is higher than the second information level V2, but the invention is not limited thereto. In this way, the display driver 120 can drive the electronic paper display panel 110 to display a first image (i.e., a black image) by using the first information level V1 with a positive electric field, and drive the electronic paper display panel 110 to display a second image (i.e., a white image) by using the second information level V2 with a negative electric field.
In other words, the electronic paper display panel 110 of the present embodiment can display the corresponding image frame according to the driving of the driving signal DS with different information levels. Specifically, referring to fig. 2A and 2B, fig. 2A is a schematic diagram of the electronic paper display panel 110 driven by the driving signal DS to display a first image according to an embodiment of the present invention. Fig. 2B is a schematic diagram of the electronic paper display panel 110 driven by the driving signal DS to display a second image according to an embodiment of the invention.
That is, the e-paper display panel 110 can display the corresponding image frames according to the driving of different information levels of the driving signal DS. When the driving signal DS outputted by the display driver 120 has a signal waveform (as the driving signal DS shown in fig. 1) composed of a combination of a series of the first information level V1 and the second information level V2, the electronic paper display panel 110 can alternately display the first image and the second image according to the first information level V1 and the second information level V2 of the driving signal DS. Thus, the electronic paper display device 100 can display the characteristics of the corresponding image frame for transmitting information by the driving of the electronic paper display panel 110 according to different information levels of the driving signal DS.
It should be noted that since the e-paper display panel 110 has a frame switching speed on the order of milliseconds, the frame changing speed is very fast, so that when the e-paper display panel 110 changes different frames to transmit information, the information is difficult to copy and steal. In addition, the display driver 120 of the present embodiment may further output the encoded driving signal DS by encoding the internal information or the received external information. Therefore, in the present embodiment, the driving signal DS contains encrypted information to be transmitted by the electronic paper display panel 110. In this way, during the information transmission period, the combination of the first image frame and the second image frame displayed by the electronic paper display panel 110 includes the encrypted information through the driving of the driving signal DS, so that the electronic paper display apparatus 100 can transmit the encrypted information by alternately displaying the first image frame and the second image frame through the electronic paper display panel 110, thereby greatly improving the security of transmitting the information.
In the encoding process, the display driver 120 may define an encoding method according to various requirements, for example, the internal information or the received external information may be encoded according to the length of time, the frequency, or a specific encoding rule (for example, according to the Morse code rule) to encrypt the information and generate the driving signal DS containing the encrypted information.
in an embodiment, the encoding method adopted by the electronic paper display device 100 is, for example, to define different encoding information according to the frequency. In this example embodiment, the display driver 120 drives the e-paper display panel 110 by using the driving signal DS with the first frequency, so that the e-paper display panel 110 transmits the encoded information in the encrypted information. The display driver 120 drives the electronic paper display panel 110 with the driving signal DS of the second frequency, so that the electronic paper display panel 110 transfers another encoded information of the encrypted information. In this example, the first frequency is not equal to the second frequency.
fig. 3A is a waveform diagram of a driving signal corresponding to encoded information according to an embodiment of the invention. Referring to fig. 3A, for example, in the present embodiment, the display driver 120 drives the electronic paper display panel 110 by using driving signals DS with different frequencies to encrypt different signals to be transmitted, such as signal 0 and signal 1. In the present embodiment, the driving signal DS with the first frequency f1 has its coded information representing signal 0, for example, and the driving signal DS with the second frequency f2 has its coded information representing signal 1, for example. In the present embodiment, the first frequency f1 is not equal to the second frequency f 2. In this way, during the signal transmission period T1, when the driving signal DS of the electronic paper display panel 110 at the first frequency f1 is switched between the first information level and the second information level, the driving signal DS is driven to alternately display the first image picture and the second image picture at the first frequency f1, so as to transmit the signal 0 in the encrypted information. In the present embodiment, during the signal transfer period T2, the electronic paper display panel 110 is driven to alternately display the first image picture and the second image picture at the second frequency f2 while the driving signal DS at the second frequency f2 is switched between the first information level and the second information level, thereby transferring the signal 1 in the encrypted information. The waveform of the driving signal DS and the corresponding encoded information are illustrated in fig. 3A for illustrative purposes only, and the present invention is not limited thereto. In other embodiments, the electronic paper display device 100 may encrypt the numbers, the english alphabets or other symbols to be transmitted according to different frequencies, which is not limited by the invention.
In another embodiment of the present invention, the display driver 120 drives the electronic paper display panel 110 with a driving signal DS having a plurality of different frequencies, so that the electronic paper display panel 110 delivers one of a plurality of encoded information in the encrypted information. In this exemplary embodiment, the encoded information transmitted by the e-paper display panel 110 is determined according to a combination of different frequencies.
For example, fig. 3B is a schematic waveform diagram illustrating driving information corresponding to encoded information according to another embodiment of the present invention. In the present embodiment, the display driver 120 drives the electronic paper display panel 110 with driving signals DS having different frequency combinations to encrypt different information to be transmitted, such as English letters A and B. Referring to fig. 3B, in the embodiment, during the signal transmission period T3, the frequency of the driving signal DS is changed from the first frequency f1 to the second frequency f2, and the combined encoded information represents, for example, an english letter a. In the signal transmission period T4, the frequency of the driving signal DS is changed from the first frequency f1 to the second frequency f2, and then the second frequency f2 is changed to the first frequency f1, so that the combined encoded information represents, for example, an english letter B. In the present embodiment, the first frequency f1 is not equal to the second frequency f 2. Thus, the electronic paper display panel 110 driven by the driving signal DS can switch the displayed image according to the conversion sequence of the first frequency f1 and the second frequency f2 to transmit the english alphabets a and B in the encrypted information. The waveform of the driving signal DS and the corresponding encoded information are illustrated in fig. 3B for illustrative purposes only, and the present invention is not limited thereto. In other embodiments, the electronic paper display device 100 may also encrypt the numbers, the english letters, or other symbols to be transmitted according to more combinations of different frequencies, which is not limited by the invention.
In an embodiment of the present invention, the electronic paper display device may first encode the internal information or the received external information to generate a driving signal containing the encrypted information. And then, the electronic paper display panel can display the corresponding image picture according to the driving of different information levels of the driving signal. Therefore, the electronic paper display device can alternately display different image frames during the signal transmission period so as to transmit the encrypted information. Therefore, the confidentiality and the safety of information transmission can be improved.
On the other hand, with the electronic paper display device and the information transmission method thereof, if the transmitted encrypted information needs to be read, the image sensing device can sense the image displayed on the electronic paper display device 100 to decode the encrypted information. The architecture of an information delivery system having an electronic paper display device is also shown in the following embodiments.
Fig. 4 is a schematic diagram of an information delivery system according to an embodiment of the present invention. Referring to fig. 4, the information delivery system 400 shown in fig. 4 includes an electronic paper display device 410 and an image sensing device 420. The electronic paper display device 410 and the electronic paper display panel 412 thereof, the display driver 414 and the driving signal DS can be referred to the electronic paper display device 100 and the electronic paper display panel 110 thereof, the display driver 120 and the related description of the driving signal DS shown in fig. 1, and so on, and are not described herein again.
In this embodiment, the image sensing device 420 is connected to the electronic paper display device 410 for receiving the encrypted information transmitted by the electronic paper display device 410 and decoding the encrypted information to obtain the information included in the encrypted information. In the present embodiment, the image sensing device 420 includes an image sensor 422 and a data processor 424. The image sensor 422 may be implemented by an infrared sensor Device, a Charge Coupled Device (CCD), or a Complementary Metal Oxide Semiconductor (CMOS), which is not limited by the present invention. The image sensor 422 is used for receiving the encrypted information transmitted by the electronic paper display device 410 and outputting the encrypted information to the data processor 424 at the back end.
In the present embodiment, the data processor 424 is electrically connected to the image sensor 422 for decoding the encrypted information to obtain information included in the encrypted information. The data Processor 424 is, for example, a Central Processing Unit (CPU), or other Programmable general purpose or special purpose Microprocessor (Microprocessor), Digital Signal Processor (DSP), Programmable controller, Application Specific Integrated Circuit (ASIC), Programmable Logic Device (PLD), or other similar devices or combinations thereof, which are not limited in the present invention. The following is a detailed description of the steps of the overall information delivery method by way of example.
Fig. 5 is a flow chart illustrating an information delivery method according to an embodiment of the invention. Referring to fig. 5, the method of the present embodiment is at least suitable for the electronic paper display device 410 and the image sensing device 420 of fig. 4. The detailed steps of the information transmission method according to the present disclosure will be described below with the electronic paper display device 410 and the image sensing device 420.
first, at the transmitting end, the display driver 414 drives the electronic paper display panel 412 of the electronic paper display device 410 to alternately display the first image screen and the second image screen during information transfer, thereby transferring encrypted information in step S510. In this embodiment, the electronic paper display panel 412 uses the black display particles and the white display particles as the display medium similarly to the embodiment of fig. 1, but the invention is not limited thereto. During the signal transmission, the electronic paper display device 410 may alternately display a first image picture composed of, for example, black display particles and a second image picture composed of, for example, white display particles to transmit encrypted information.
At the receiving end, in step S520, the information delivery system 400 receives the encrypted information by the image sensing device 420 and decodes the encrypted information to obtain the information included in the encrypted information. In the present embodiment, the image sensor 422 of the image sensing device 420, for example, transmits a sensing signal to the electronic paper display device 410, and the electronic paper display device 410 feeds back the sensing signal to the image sensor 422 so that the image sensor 422 receives encrypted information. It is noted that the electronic paper display device 410 displaying the first image frame absorbs at least part of the sensing signal, and the electronic paper display device 410 displaying the second image frame reflects at least part of the sensing signal.
generally, when the infrared sensor device detects an image displayed on the electronic paper display device, a black portion of the image screen absorbs infrared rays (sensor signals) emitted from the infrared sensor device, and a white portion of the image screen reflects infrared rays (sensor signals) emitted from the infrared sensor device. In the present embodiment, an infrared ray sensing device is employed as the image sensor 422, for example, but the present invention is not limited thereto. In this example, while the electronic paper display device 410 alternately displays the first image picture composed of black display particles and the second image picture composed of white display particles, infrared rays are emitted to the electronic paper display device 410 through the infrared ray sensing device to dynamically detect the encrypted information transmitted by the electronic paper display device 410. In this way, the electronic paper display device 410 displaying the first image (black) will absorb at least part of the infrared ray, and the electronic paper display device 410 displaying the second image (white) will reflect at least part of the infrared ray, so that the infrared sensing device can sense the encrypted information transmitted by the image displayed by the electronic paper display device 410 according to the feedback sensing signal.
then, the image sensor 422 receives the encrypted information and then transmits the encrypted information to the data processor 424 for decoding. The data processor 424 can analyze the image frame of the electronic paper display device 410 according to the encrypted information transmitted by the image sensor 422 and the corresponding encoding method (for example, the above-mentioned encoded information with different frequencies or combinations thereof, but the invention is not limited thereto) to obtain the information DD included in the encrypted information. It is worth mentioning that the encrypted information communicated via the information delivery system 400 may also be pre-encrypted using at least one algorithm. The image sensor 422 may decode the encrypted information, for example, with a corresponding back-end processing algorithm, to obtain the information DD included in the encrypted information. Therefore, the encrypted information transmitted through the electronic paper display device 410 is not only difficult to copy and steal, but also can increase the security of information transmission through multiple security measures.
In short, in the information transmission system and the method thereof according to the embodiment of the present invention, the transmission end may transmit the encrypted information by alternately displaying the first image and the second image on the electronic paper display device. And at the receiving end, an infrared sensing device can be adopted to detect the image frames alternately displayed by the electronic paper display device so as to receive the encrypted information. Then, the data processor decodes the encrypted data to obtain the information included in the encrypted information. Thus, not only the encrypted information transmitted through the electronic paper display device 410 is difficult to copy and steal, but also the security of information transmission can be increased through multiple security measures.
In addition, in other embodiments of the present invention, the e-paper display panel 110, 412 may also transmit the encrypted information through a display manner different from the above-mentioned display manner. For example, the e-paper display panel 412 may further include a plurality of display areas, such that the display driver 414 drives the display areas of the e-paper display panel 412 to alternately display the first image frame and the second image frame by using the driving signal DS, so that the e-paper display panel transmits one of the plurality of encoded information in the encrypted information. The encoding information transmitted by the electronic paper display panel 412 is determined according to the combination of the first image and the second image displayed in the display area, for example. In addition, the signal transmission method and the panel driving method of the electronic paper display device 410 of the present exemplary embodiment can obtain sufficient teaching, suggestion and implementation description from the description of the embodiments in fig. 1 to fig. 3, and therefore, are not described again.
Specifically, referring to fig. 6, fig. 6 is a schematic diagram of an electronic paper display panel including a plurality of display areas according to an embodiment of the present disclosure. In the present embodiment, the electronic paper display panel 610 includes display regions a1, a2, A3, a 4. The electronic paper display panel 610 is driven by a driving signal DS to make the display regions a1, a2, A3, and a4 respectively display a first image and a second image. For example, when the display areas a1 and a4 display the first image picture and the display areas a2 and A3 display the second image picture, the combination of the image pictures can correspond to one of a plurality of encoded information, and the encoded information can be defined by the user, as shown in fig. 6, but the invention is not limited thereto. In this way, the electronic paper display panel 610 of the present embodiment can generate a greater variety of encoded information by combining the first image and the second image displayed in each display region. The coded information can be defined by the user, and the image can be switched quickly through the electronic paper display panel 610, thereby improving the security and confidentiality of the transmitted encrypted information. In addition, the signal transmission method and the panel driving method of the electronic paper display panel according to the present exemplary embodiment can obtain sufficient teaching, suggestion and implementation description from the description of the embodiments in fig. 1 to 5, and thus are not repeated.
In summary, the driving signal of the electronic paper display device, the information transmission system and the method thereof according to the embodiments of the present invention includes encoded information to be transmitted, so as to drive the electronic paper display panel to rapidly and alternately display different image frames during the signal transmission period, so as to transmit the encrypted information. The image sensing device is used for detecting the image frames alternately displayed by the electronic paper display device while the electronic paper display device switches the image frames, so as to receive and decode the encrypted information, and thus, the information included in the encrypted information is obtained. In addition, the electronic paper display panel may further include a plurality of display areas to generate a greater variety of encoded information. Therefore, the encrypted information transmitted by the electronic paper display device is difficult to copy and steal, and the security of information transmission can be improved by a plurality of security measures.
finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (15)
1. An electronic paper display device for transmitting encrypted information, the electronic paper display device comprising:
The electronic paper display panel is used for displaying a first image picture or a second image picture; and
A display driver electrically connected to the electronic paper display panel for outputting a driving signal to the electronic paper display panel,
Wherein the display driver drives the electronic paper display panel to alternately display the first image picture and the second image picture during information transfer by using the driving signal to transfer the encrypted information,
Wherein the display driver drives the electronic paper display panel with the driving signal of a first frequency such that the electronic paper display panel delivers encoded information of the encrypted information, and the display driver drives the electronic paper display panel with the driving signal of a second frequency such that the electronic paper display panel delivers another encoded information of the encrypted information, wherein the first frequency is not equal to the second frequency.
2. The electronic paper display device according to claim 1, wherein the encrypted information includes a combination of the first image picture and the second image picture displayed during the information transfer.
3. The electronic paper display device according to claim 1, wherein the driving signal comprises a first information level and a second information level, the display driver drives the electronic paper display panel to display the first image picture using the driving signal of the first information level, and the display driver drives the electronic paper display panel to display the second image picture using the driving signal of the second information level.
4. an information delivery system for delivering encrypted information, the information delivery system comprising:
The electronic paper display device is used for alternately displaying a first image picture and a second image picture during information transmission so as to transmit the encrypted information; and
The image sensing device is in signal connection with the electronic paper display device and used for receiving the encrypted information and decoding the encrypted information to obtain information included in the encrypted information,
Wherein the electronic paper display device is driven by a driving signal, the driving signal includes a first frequency and a second frequency, the driving signal of the first frequency drives the electronic paper display device to transmit encoded information in the encrypted information, and the driving signal of the second frequency drives the electronic paper display device to transmit another encoded information in the encrypted information, wherein the first frequency is not equal to the second frequency.
5. The information delivery system according to claim 4, wherein the encrypted information includes a combination of the first image screen and the second image screen displayed by the electronic paper display device during the information delivery.
6. the information delivery system according to claim 4, wherein the electronic paper display device is driven by a drive signal, the drive signal including a first information level and a second information level, the drive signal of the first information level driving the electronic paper display device to display the first image picture, and the drive signal of the second information level driving the electronic paper display device to display the second image picture.
7. the information delivery system according to claim 4, wherein the image sensing device comprises:
An image sensor to receive the encryption information and output the encryption information; and
And the data processor is electrically connected to the image sensor and used for decoding the encrypted information so as to obtain the information included in the encrypted information.
8. The information transfer system according to claim 7, wherein the image sensor transmits a sensing signal to the electronic paper display device, and the electronic paper display device feeds back the sensing signal to the image sensor to have the image sensor receive the encrypted information,
wherein the electronic paper display device displaying the first image picture absorbs at least a portion of the sensing signal, and the electronic paper display device displaying the second image picture reflects at least a portion of the sensing signal.
9. An information delivery method for delivering encrypted information, the information delivery method comprising:
Driving an electronic paper display device to alternately display a first image screen and a second image screen during information transfer, thereby transferring the encrypted information; and
Receiving the encrypted information and decoding the encrypted information to obtain information included in the encrypted information,
wherein in the step of driving the electronic paper display device to alternately display the first image picture and the second image picture during the information transfer, the electronic paper display device is driven with a driving signal, the driving signal comprising a first frequency and a second frequency, the driving signal of the first frequency driving the electronic paper display device to transfer encoded information in the encrypted information, and the driving signal of the second frequency driving the electronic paper display device to transfer another encoded information in the encrypted information, wherein the first frequency is not equal to the second frequency.
10. The information transfer method according to claim 9, wherein the encrypted information includes a combination of the first image screen and the second image screen displayed by the electronic paper display device during the information transfer.
11. The information transfer method according to claim 9, wherein in the step of driving the electronic paper display device to alternately display the first image picture and the second image picture during the information transfer, the electronic paper display device is driven with a driving signal including a first information level and a second information level, the driving signal of the first information level drives the electronic paper display device to display the first image picture, and the driving signal of the second information level drives the electronic paper display device to display the second image picture.
12. The information delivery method according to claim 9, wherein the step of receiving the encrypted information and decoding the encrypted information to obtain the information included in the encrypted information comprises:
Transmitting a sensing signal to the electronic paper display device and receiving the sensing signal fed back by the electronic paper display device to receive the encrypted information,
Wherein the electronic paper display device displaying the first image picture absorbs at least a portion of the sensing signal, and the electronic paper display device displaying the second image picture reflects at least a portion of the sensing signal.
13. an electronic paper display device for transmitting encrypted information, the electronic paper display device comprising:
the electronic paper display panel is used for displaying a first image picture or a second image picture; and
a display driver electrically connected to the electronic paper display panel for outputting a driving signal to the electronic paper display panel,
Wherein the display driver drives the electronic paper display panel to alternately display the first image picture and the second image picture during information transfer by using the driving signal to transfer the encrypted information,
wherein the display driver drives the electronic paper display panel with the driving signal having a plurality of different frequencies such that the electronic paper display panel transmits one of a plurality of encoded information in the encrypted information, wherein the plurality of encoded information transmitted by the electronic paper display panel is determined according to a combination of the plurality of different frequencies.
14. an information delivery system for delivering encrypted information, the information delivery system comprising:
The electronic paper display device is used for alternately displaying a first image picture and a second image picture during information transmission so as to transmit the encrypted information; and
the image sensing device is in signal connection with the electronic paper display device and used for receiving the encrypted information and decoding the encrypted information to obtain information included in the encrypted information,
the electronic paper display device is driven by a driving signal with a plurality of different frequencies to transmit one of a plurality of pieces of coded information in the encrypted information, wherein the plurality of pieces of coded information transmitted by the electronic paper display device are determined according to a combination of the plurality of different frequencies.
15. An information delivery method for delivering encrypted information, the information delivery method comprising:
Driving an electronic paper display device to alternately display a first image screen and a second image screen during information transfer, thereby transferring the encrypted information; and
Receiving the encrypted information and decoding the encrypted information to obtain information included in the encrypted information,
The electronic paper display device is driven by a driving signal with a plurality of different frequencies to transmit one of a plurality of pieces of coded information in the encrypted information, wherein the plurality of pieces of coded information transmitted by the electronic paper display device are determined according to the combination of the plurality of different frequencies,
Wherein in the step of driving the electronic paper display device to alternately display the first image picture and the second image picture during the information transfer, the electronic paper display device is driven by a driving signal having a plurality of different frequencies to transfer one of a plurality of encoded information in the encrypted information, wherein the plurality of encoded information transferred by the electronic paper display device is determined according to a combination of the plurality of different frequencies.
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| CN102523460A (en) * | 2011-11-21 | 2012-06-27 | 杨辉洲 | Method and system for displaying confidential content through encryption |
| TW201416907A (en) * | 2012-10-18 | 2014-05-01 | qing-fang Wu | A process method of performing system registration by an optical control way, an optically controlled electronic equipment and a mobile electronic device which optically controls an electronic equipment |
| US9619195B2 (en) * | 2013-11-01 | 2017-04-11 | Apple Inc. | Invisible light transmission via a display assembly |
| JP6345697B2 (en) * | 2013-12-27 | 2018-06-20 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ | Information processing program, reception program, and information processing apparatus |
| CN104506543B (en) * | 2014-12-26 | 2017-11-17 | 上海众人网络安全技术有限公司 | A kind of security certification system and its authentication method based on optical signal |
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