TWI483113B - Data transmitting system - Google Patents

Description

Data transmission system

The present invention relates to a data transmission system.

In recent years, in order to increase the application level of consumer electronic products, some operators have begun to add the function of near field communication (or short-range wireless communication) in electronic device products. Wherein, near field communication (or short-range wireless communication) can provide a message that can be transmitted from one electronic device to another electronic device, such as an instruction, music, picture, business card, data or file, without an actual circuit connection. Transmission route. In addition to making the electronic device convenient for transmission, it can also improve its application level, for example, it can replace the occasion where a large number of IC cards are used, such as access control, ticket, ticket, credit card payment, or receiving advertising information, for example, The store screen receives discounts via Bluetooth communication.

Electronic device products with near field communication functions are increasingly inevitable. Therefore, how to provide a new architecture of near-field communication electronic devices is also a solution that manufacturers in this industry are actively trying to find.

In view of the above problems, an object of the present invention is to provide a data transmission system of a new architecture, which can process display data and transmission data to a display panel of a visual interface device, except that the image can be displayed by a visual interface device. Outside the screen, the data or file can be accessed by a visual interface device The transmission data of the case is transmitted to another electronic device, and the transmission data can be extracted by the extraction mechanism of the other electronic device, thereby realizing the transmission function of the wireless connection and expanding the application level of the electronic device.

To achieve the above object, a data transmission system includes a visual interface device and an operating device. The visual interface device has a display panel and a control unit. The control unit receives a display data and a transmission data, and transmits the data to the display panel. The operating device has a capturing unit. When the operating device is operated on the visual interface device, the coupling signal including the display data and the transmission data is coupled from one of the electrodes of the display panel to the operating device, and the operating device is coupled from the capturing unit. The transmission data is taken out in the signal.

In an embodiment, the coupling signal includes at least one mark, and the operating device distinguishes the transmitted data by the mark.

In one embodiment, the indicia is indicative of at least one of a starting point, or an ending point, or a length of the data of the transmitted material.

In one embodiment, the indicia is indicative of at least one of a starting point, or an ending point, or a length of the data of the displayed material.

In one embodiment, the indicia comprises at least one of identification information of the visual interface device, or identification information of the operating device, or an error correction code.

In one embodiment, the difference in signal pattern between the transmitted data and the displayed data is the difference in amplitude, frequency, phase, time, clock width, or data pattern.

In an embodiment, the capture unit performs data acquisition by frequency domain, time domain, phase or amplitude.

In an embodiment, the control unit adds a mark to the display data and adds another mark to the transfer data, and the capture unit displays the data and transmits the data according to the mark and the other mark.

According to the above, in the data transmission system of the present invention, when the operating device is operated on the visual interface device, the coupled signal including the display data and the transmission data is coupled from one of the electrodes of the display panel to the operating device, and the operating device The transmission data can be extracted from the coupling signal via the capture unit. In this way, the visual interface device can transmit the coupled signal including the display data and the transmission data to the operating device by means of wireless coupling, and the operating device can receive the coupled signal via the capturing unit. The middle school takes out the transmission data. Therefore, the present invention can achieve the transmission function of the wireless connection and expand the application level of the electronic device.

DETAILED DESCRIPTION OF THE INVENTION A data transmission system in accordance with a preferred embodiment of the present invention will now be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

Please refer to FIG. 1, which is a functional block diagram of a data transmission system according to a preferred embodiment of the present invention.

As shown in FIG. 1 , the data transmission system of the present invention includes an operating device 1 and a visual interface device 2 , which are coupled to each other and can be electrically coupled, for example, by electromagnetic coupling (for example, capacitive or inductive). In this way, data or files can be transmitted, so that the transmission of data or files without wiring is also called wireless data or file transmission.

The operating device 1 can be, for example, a receiving device (for example, a card reader or an access control system) or a chip card, or a mobile phone, or a public information device, or a point of sale (POS). The device, or another electronic device having a visual interface display, or an electronic device that can perform other functions. In addition, the visual interface device 2 can include, for example, another mobile phone, a computer (eg, a tablet, a notebook), another public display, an advertising billboard, an electronic whiteboard, or a number of assistants, or a combination thereof. There are no restrictions. In addition, the operating device 1 and the visual interface device 2 may respectively have functional subsystems such as a processing control system, a storage system or a transmission system. Here, the "system" may be constituted by a hardware, a soft body, or a firmware, or a combination thereof.

The visual interface device 2 includes a display panel 21 and a control unit 22, and the operating device 1 includes a capture unit 11.

The display panel 21 has at least one electrode 211. The display panel 21 includes a pixel matrix, and the pixel matrix can be an active matrix or a passive matrix. The display panel 21 is exemplified by an active matrix display panel, and may be, for example, a liquid crystal display panel, an organic light emitting diode panel, a light emitting diode panel, an electrophoretic display panel, a touch display panel, or a MEMS display panel. Matrix substrate. Taking the liquid crystal display panel as an example, the display panel 21 may include a plurality of row electrodes, a plurality of column electrodes, and a plurality of pixel electrodes (not shown) to form a pixel matrix, and the row electrode lines and the column electrodes may be alternately arranged. . In addition, the display panel 21 may further include a plurality of transistors (not shown), and the row electrodes, the column electrodes, and the pixels respectively The electrodes are electrically connected. The row electrodes may be a plurality of scan lines, and the column electrodes may be a plurality of data lines. Of course, the row electrodes may be a plurality of data lines, and the column electrodes are a plurality of scan lines. The electrode 211 may be at least one of the row electrodes or the column electrodes of the pixel matrix of the display panel 21, or one of the electrodes other than the pixel matrix (which may be one or more electrodes) and independent of the pixel Outside the matrix, it is not limited.

The control unit 22 can include a core control component of the visual interface device 2, for example, can include at least one central processing unit (CPU) and a memory, or include other control hardware, software, or firmware. In addition, the control unit 22 further includes a driving unit (not shown in FIG. 1), and the driving unit includes a circuit for driving the display panel 21. Taking the liquid crystal display panel as an example, the driving unit for driving the liquid crystal display panel may include a timing control circuit (T-con), a data driver circuit, and a scan driver. The driving unit may be one or several separate integrated circuits (for example, a driving IC), and is electrically connected to the display panel 21, or may be partially or partially integrated with the display panel 21, or may be completely integrated into the display panel 21. Driver on panel, here is not limited. Separate or integrated herein means whether the substrates of the two are shared.

The control unit 22 can transmit a display material DD and a transmission data TD to the display panel 21. Here, the display material DD and the transmission data TD drive the display panel 21 by the driving unit. The signal can be coupled to the operating device 1 when the operating device 1 is in operation or on the display panel 21. In order to enable the operating device 1 to distinguish between the display data DD and the transmission data TD, the control unit 22 needs to process the display data DD and the transmission data TD first. Control unit 22 The processing may include modulation, series-to-parallel conversion, overwriting, adding a header (including data size, check code, serial number, tracking data) or other processing. The display data DD and the transmission data TD may be respectively generated by internal commands or external commands of the visual interface device 2, and the source thereof may be obtained by the memory in the visual interface device 2, or may be transmitted by an external device, and is not limit. The display data DD can be the scanning signal of the display panel 21 and the grayscale data of the frame screen, and the transmission data TD can be a digital data stream or a digital file stream, and can be touch information, command information, and identification. Information, trading information, advertising information, promotional information, file information or other information.

The difference from the general communication transmission mode is that the present invention can utilize the different electrodes on the display panel 21 as the transmission source (multi-communication pipeline) for transmission. These communication pipes can utilize spatial isolation or modulation techniques to simultaneously transmit and reduce interference between each other. It should be noted that the serial-to-parallel conversion method of the data may be sequential or interlaced, or a combination of the two. Here, the display data DD and the transmission data TD are data indicating that two different purposes are transmitted to the display panel 21 instead of indicating the signal. Taking the liquid crystal display panel as an example, the display data DD represents two types of scanning signals and data signals for displaying image images, and the signal represented by the transmission data TD may be independent of the scanning signal or the data signal, or The scanning signal of the data DD is displayed, or the information signal of the display data DD is different.

Taking the data line as an example, in addition to transmitting the data signal (display data DD) of the general frame picture, the data line can be used to transmit the transmission resource. Material TD. For example, the transmission data TD can be converted into a signal higher than the frequency of the data signal (display data DD) and directly superimposed on the signal of the display data DD, or the signal of the transmission data TD can be interspersed between the signals of the display data DD, and For example, after all the scan lines of one screen are scanned, the time is transmitted before the start of the next screen scan (the gap time between the frame screen and the frame screen), or after one scan line scan is completed and the next scan starts. The previous transmission, or shortening the display data DD during each scanning line scanning time and transmitting before transmitting the transmission data TD, etc.

Please refer to FIG. 2 , which is a schematic diagram of signals of two adjacent scan lines (row electrodes) and two adjacent data lines (column electrodes) in a liquid crystal display panel. Here, the transmission of the transmission data TD can be simultaneously performed when each column of transistors is turned on for display. It should be noted that when the transmission data TD is transmitted, it is not necessary to turn on or off the transistor, and it can also be transmitted while the transistor is off. As shown in the figure, the scan lines can respectively transmit the scan signals and sequentially turn on the transistors of each column, and in the time when each column of the transistors is turned on, each data line can respectively transmit the transmission data TD and the display data DD (grey Order data).

In the present embodiment, when the scan line _Sk-1 transmits its scan signal SSk _-1 , all data lines transmit the transmission data TDk _-1 (the transmission data transmitted by the individual data lines is TD ^n-1 _{k -1} and TD ⁿ _k-1 indicate); when the scan line S _k transmits its scan signal SS _k , all data lines transmit the transmission data TD _k (the transmission data transmitted by the individual data lines is TD ^n-1 _k and TD ⁿ _k is). In FIG. 2, the transmission data TD _k-1 , TD _k (represented by TD ^n-1 _k-1 , TD ⁿ _k-1 , TD ^n-1 _k , TD ⁿ _k , respectively) are displayed and displayed DD _{k- 1} , DD _k (represented by DD ^n-1 _k-1 , DD ⁿ _k-1 , DD ^n-1 _k , DD ⁿ _k ) are marked by different voltage level methods, and can be implemented in the same level or other The feature is this. In this way, the data line can transmit the transmission data TD separately when the scanning line transmits the scanning signal.

It should be added that the transmission data TD ^n-1 _k-1 , TD ⁿ _k-1 , TD ^n-1 _k , TD ⁿ _k shown in FIG. 2 are displayed as high level 1 but only indicated, of course. It is also possible to use a low level of 0. In addition, in order to avoid the polarity problem of the signal, the signals of the transmission data TD ^n-1 _k-1 , TD ⁿ _k-1 , TD ^n-1 _k , TD ⁿ _k may themselves adopt an AC signal without a DC component.

The above method is to express the 1 or 0 of the digital signal by the level of the amplitude. However, the frequency can also be used to represent the 1 or 0 of the digital signal. For example, the change of the upper and lower amplitudes of the unit time can be defined as 1 and the rest. Then it is 0; or use phase to represent 1 or 0 of the digital signal, for example, define a high level plus a low level of 0, and a low level plus a high level is 1. Here, the manner is not limited. In addition, in order to avoid interference between adjacent electrodes, techniques such as time division, frequency division, and code division can be used between different electrodes.

In addition, the transmission data TD can also be transmitted via a scan line, for example, converted into a signal that does not turn on the level of the pixel transistor, or transmitted through an electrode of a non-dependent data line and a scan line (for example, a single electrode transmission). Or transmit on the data line and the scan line at the same time to speed up the transmission, or convert the transmission data TD into two signals (for example, one positive and one negative) and simultaneously transmit them to different electrodes (such as data lines or scan lines). To reduce the signal amplitude. In addition, if the row or column electrodes in the pixel matrix are used to transmit When the data TD is transmitted, it can be transmitted separately from the display material DD of the visual interface device 2 at different times, for example, after the end of the transmission of a frame picture or before the start of the transmission of a picture frame. In other words, the visual interface device 2 can start transmitting the coupling signal CS to the operating device 1 after the end of one frame frame and before the start of the next frame or during the display of a frame. It should be noted that if a separate electrode other than the pixel matrix is used for the transmission of the transmission data TD, it is not necessary to cooperate with the time of the frame picture transmission.

Referring to FIG. 1 again, when the operating device 1 is operated on the visual interface device 2, the coupling signal CS including the display data DD and the transmission data TD can be coupled from the electrodes of the display panel 21 (for example, capacitive or inductive coupling). To the operating device 1. After the operating device 1 receives the coupling signal CS, the transmission data TD can be extracted from the coupling signal CS via the capturing unit 11 in the operating device 1 to complete the transmission of the data or the file. Here, the coupling wirelessly transmits digital information (ie 0 or 1) from the visual interface device 2 to the operating device 1. When the operating device 1 receives the coupling signal CS transmitted from the display panel 21, the operating device 1 can process the received coupling signal CS to obtain the transmitted information. The method of receiving data is to contact the display surface of the display panel 21 of the visual interface device 2 by the operating device 1 to couple the coupling signal CS to the operating device 1 by electromagnetic action.

In order to enable the capture unit 11 in the operating device 1 to extract the transmission data TD from the coupling signal CS, the control unit 22 may add at least one mark to the display data DD and or the transmission data TD to include the coupling signal CS. This marking allows the capture unit 11 of the operating device 1 to recognize the transmitted data TD and retrieve it. In other words, the control unit 22 can add a flag to the display data DD, so that the capture unit 11 can recognize the display data DD to obtain the transmission data TD; or the control unit 22 can add a mark to the transmission data TD, so that the retrieval unit 11 can The transmission data TD is identified to obtain the transmission data TD; or the control unit 22 can separately add different labels to the display data DD and the transmission data TD, so that the capturing unit 11 can distinguish the display data DD and the transmission data TD according to different labels to obtain the transmission. Information TD. Here, the mark added by the control unit 22 may include at least one transfer mark or one data mark (at least one of the transfer mark or the material mark). Wherein, the transmission mark refers to processing the display data DD and the transmission data TD in different modulation methods, for example, transmitting the transmission data TD with a frequency, amplitude or phase different from the display data DD; in addition, the data mark refers to adding in the data. a special mark to indicate, for example, information such as a starting point, an ending point, or a data length of the transmission data TD, so that the capturing unit 11 can self-couple the signal CS to distinguish the display data DD that is used for display. One part is the transmission data TD for transmission. The data tag can, for example, indicate the starting point and the ending point of the display data DD (if the data length is fixed, only need to know the starting point), the data length, or the starting point and ending point of the transmission data TD (if When the data length is fixed, you only need to know the starting point), the length of the data, and so on. In addition, the mark may further include at least one of identification information (such as a brand name, serial number, name) of the visual interface device 2, or identification information of the operating device 1, or an error correction code, or any combination thereof (error) The correction code can be, for example, a sum check code check sum, and a sum check code can be It is used to verify whether the data is damaged during the transmission process, and if it is wrong, it needs to be retransmitted. In this way, the capturing unit 11 can obtain the transmission data TD according to the marking. In the marked transmission data TD and or the display data DD, the difference in signal presented may be amplitude, frequency, phase, time, clock width or data type difference.

For example, the data transmission system of the present invention can use different frequencies (for example, modulating the transmission data TD by 4 times the scanning line frequency of the display data DD), amplitude, and phase (for example, when the frame is continuous, the display data DD is polarity inversion. , the transmission data TD is the polarity is not reversed) to transmit the display data DD and the transmission data TD, so that the capturing unit 11 of the operating device 1 can extract the transmission data TD according to the manner, or the method for transmitting the marking; or use for a period of time A specific amplitude, frequency, clock width or special code appears to distinguish the position of the transmitted data TD or the displayed data DD, for example, using a large amplitude signal as the display data DD or the starting point of the transmission data TD (or Synchronization signal) for identification and retrieval by the capture unit 11. The capturing unit 11 can also use amplitude amplitude, frequency domain signals (for example, the presence or absence of a specific frequency signal different from the display data DD), and time domain range (for example, inserting the transmission data TD after the display data DD of each screen or Transfer between scan lines), clock width (for example, the clock width of the transmission data TD is 1/2 of the scan time of the display data DD) or special code (for example, the starting point of the transmission data TD is a digital data) "010", and each data width is 1/3 of the scan time), etc., to identify and capture the transmitted data TD, which is the way of data marking. It should be noted that, in addition to the use of the mark difference display data DD and the transmission data TD, the mark of the present invention may also include Information such as the recipient, the sender, the data length or the error correction code is sent to assist in distinguishing or identifying the transmission data TD and its correctness.

Therefore, when the user operates the display device 21 on the display panel 21 of the visual interface device 2 (for example, touches the display panel 21 or approaches the display panel 21), the coupling signal CS can be displayed from the display surface of the display panel 21. The capacitor or the inductor is coupled to the operating device 1 and the transmission data TD can be obtained by the capture unit 11. For example, when the operating device 1 is an access control unit, the operating device 1 can receive the opening or locking of the door transmitted by the visual interface device 2 when the display surface of the visual interface device 2 is operated close to the operating device 1. Information, whereby the access control or unlocking can be released; when the visual interface device 2 is a public display kanban, and the operating device 1 is a mobile phone or other personal device, the operating device 1 can be brought close to the display surface of the visual interface device 2 And send information such as advertising information, preferential information, geographic information, etc. to the personal device.

In summary, in the data transmission system of the present invention, when the operating device is operated on the visual interface device, the coupled signal including the display data and the transmission data is coupled from one of the electrodes of the display panel to the operating device, and the operating device The transmission data can be extracted from the coupling signal via the capture unit. In this way, the visual interface device can transmit the coupled signal including the display data and the transmission data to the operating device by means of wireless coupling, and the operating device can receive the coupled signal via the capturing unit. The middle school takes out the transmission data. Therefore, the present invention can achieve the transmission function of the wireless connection and expand the application level of the electronic device.

The above is intended to be illustrative only and not limiting. Any not detached The spirit and scope of the present invention, and equivalent modifications or variations thereof, are intended to be included in the scope of the appended claims.

1‧‧‧Operating device

11‧‧‧Capture unit

2‧‧‧Visual interface device

21‧‧‧ display panel

211‧‧‧electrode

22‧‧‧Control unit

CS‧‧‧Coupling data

DD, DD ^n-1 _k , DD ^n-1 _k-1 , DD ⁿ _k , DD ⁿ _k-1 ‧‧‧ Display data

D _n , D _n - ₁ ‧‧‧ data line

S _k , S _k-1 ‧‧‧ scan line

SS _k , SS _k-1 ‧‧‧ scan signal

TD, TD ^n-1 _k , TD ^n-1 _k-1 , TD ⁿ _k , TD ⁿ _k-1 ‧‧‧Transmission data

1 is a functional block diagram of a data transmission system according to a preferred embodiment of the present invention; and FIG. 2 is a liquid crystal display panel in which two adjacent scan lines (row electrodes) and two adjacent data lines Schematic diagram of the (column electrode) signal.

1‧‧‧Operating device

11‧‧‧Capture unit

2‧‧‧Visual interface device

21‧‧‧ display panel

211‧‧‧electrode

22‧‧‧Control unit

CS‧‧‧Coupling data

DD‧‧‧Display information

TD‧‧‧ transmission data

Claims (10)

A data transmission system comprising: a visual interface device having a display panel and a control unit, the control unit receiving a display data and a transmission data and transmitting to the display panel; and an operating device having a capture unit When the operating device is operated on the visual interface device, a coupling signal including the display data and the transmission data is coupled from an electrode of the display panel to the operating device, and the operating device is captured by the operating device The unit extracts the transmission data from the coupling signal. The data transmission system of claim 1, wherein the coupling signal includes at least one mark, and the operating device distinguishes the transmission data by the mark. The data transmission system of claim 2, wherein the label indicates at least one of a starting point, an ending point, or a length of the data. The data transmission system of claim 2, wherein the mark indicates at least one of a starting point, or an ending point or a length of the data of the displayed data. The data transmission system of claim 2, wherein the marking comprises at least one of identification information of the visual interface device or identification information of the operating device. For example, the data transmission system described in claim 2, wherein The tag contains an error correction code. The data transmission system of claim 2, wherein the difference between the transmission type of the transmission data and the signal type of the display data is a difference in amplitude, frequency, phase, time or clock width. The data transmission system of claim 1, wherein the capturing unit performs the capturing of the transmission data by using a frequency domain or a time domain. The data transmission system of claim 1, wherein the capturing unit performs the capturing of the transmission data by time, frequency, phase or amplitude. The data transmission system of claim 1, wherein the control unit adds a mark to the display material and adds another mark to the transmission data, and the capture unit distinguishes according to the mark and the another mark The display data and the transmission data.