CN214474710U

CN214474710U - Interactive flat plate

Info

Publication number: CN214474710U
Application number: CN202120353741.3U
Authority: CN
Inventors: 庞远杨
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-10-22
Anticipated expiration: 2031-02-08

Abstract

The utility model discloses an mutual flat board, a serial communication port, include: a main control system chip and a decoding chip; the main control system chip is connected with the decoding chip; the main control system chip is used for converting the picture to be displayed into a code stream and transmitting the code stream to the decoding chip through a Universal Serial Bus (USB) interface; the decoding chip is externally connected with audio and video receiving equipment and is used for transmitting a target picture corresponding to the code stream to the audio and video receiving equipment through a high-definition multimedia interface. Compared with the existing interactive flat plate, the interactive flat plate realizes synchronous display of the display picture on the interactive flat plate and other display terminals.

Description

Interactive flat plate

Technical Field

The embodiment of the utility model provides a relate to the video display technique, especially relate to an interactive flat board.

Background

In large-size intelligent interactive tablet applications, the requirements of expanding displayed pictures to other display terminals are often met.

When the display of the display picture to other display terminals is realized, the interactive flat panel needs to convert the display picture from a VBO signal or a Low-Voltage Differential Signaling (LVDS) meeting the V BY ONE signal standard into a High-definition multimedia interface output (HDMI OUT) signal through the signal conversion module, and simultaneously convert a same V BY ONE or LVDS signal to the display screen of its own system, so as to realize the synchronous display of the display picture on the interactive flat panel and other display terminals.

However, the resolution of the display screen for displaying is upgraded quickly, and the signal conversion module also needs to perform corresponding new update iteration after the resolution of the display screen is upgraded, but because the iteration speed of the signal conversion module in the interactive panel is always behind the upgrade of the resolution of the TV System on Chip (SoC) and the display screen, the full-channel HDMI OUT cannot be effectively matched in the interactive panel after the screen or the TV SoC is updated, and therefore, the display of the display picture to other display terminals is influenced, or the product promotion of the updated interactive panel is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides an interactive flat board to reduce the influence that display screen resolution ratio upgraded the synchronous display of show picture on interactive flat board and other display screens.

The utility model provides an interactive flat board, include: a main control system chip and a decoding chip;

the main control system chip is connected with the decoding chip;

the main control system chip is used for converting the picture to be displayed into a code stream and transmitting the code stream to the decoding chip through a Universal Serial Bus (USB) interface;

the decoding chip is externally connected with audio and video receiving equipment and is used for transmitting a target picture corresponding to the code stream to the audio and video receiving equipment through a high-definition multimedia interface.

Optionally, the interactive tablet further comprises: and the display screen is connected with the main control system chip.

Optionally, the picture to be displayed is transmitted to the display screen by a low voltage differential signal LVDS.

Optionally, the picture to be displayed is transmitted to the display screen BY a VBO signal meeting the V BY ONE signal standard.

Optionally, the code stream is formed by the main control system chip through screen recording and encoding of the picture to be displayed.

Optionally, the target picture is formed by decoding the code stream by the decoding chip.

Optionally, a watermark mark is added to the target picture through the processing of the decoding chip.

Optionally, the processing of the target picture by the decoding chip includes an enlarged picture of a user-selected area; or an occlusion picture containing a user selected area.

The mutual dull and stereotyped that this application embodiment provided includes: a main control system chip and a decoding chip; the main control system chip is connected with the decoding chip; the main control system chip is used for converting the picture to be displayed into a code stream and transmitting the code stream to the decoding chip through a Universal Serial Bus (USB) interface; the decoding chip is externally connected with audio and video receiving equipment and is used for transmitting a target picture corresponding to the code stream to the audio and video receiving equipment through a high-definition multimedia interface. The utility model provides an interactive flat board can only be through the connection of major control system chip and decoding chip, just will wait in the interactive flat board that the show picture transmits to audio frequency and video receiving equipment based on universal serial bus interface, has realized that interactive flat board and audio frequency and video receiving equipment treat the synchronous show that the show picture goes on. Compared with the existing interactive flat plate, the decoding chip replaces a signal conversion module in the existing interactive flat plate, so that the influence on synchronous display from a display picture to other display terminals due to untimely upgrade of the signal conversion module is avoided.

Drawings

Fig. 1 is a schematic structural diagram of an interactive flat plate according to an embodiment of the present invention;

fig. 2 is a diagram illustrating a structure of a main control system chip in an interactive tablet according to a first embodiment of the present invention;

fig. 3 is a diagram illustrating the effect of laying an interactive tablet under a scene of a video to be played according to an embodiment of the present invention.

Reference numerals: the system comprises an interactive panel 1, a main control system chip 10, a video acquisition module 101, an encoding module 102, a decoding chip 11, a display screen 12 and an audio/video receiving device 2.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is the embodiment of the utility model provides a pair of mutual dull and stereotyped schematic diagram, this mutual dull and stereotyped scene that needs a plurality of display screen synchronous display to treat the show picture that is applicable to, as shown in fig. 1, this mutual dull and stereotyped 1 includes: a main control system chip 10 and a decoding chip 11;

the main control system chip 10 is connected with the decoding chip 11;

the main control system chip 10 is used for converting the picture to be displayed into a code stream and transmitting the code stream to the decoding chip 11 through a Universal Serial Bus (USB) interface;

the decoding chip 11 is externally connected with the audio/video receiving device 2, and is used for transmitting the target picture corresponding to the code stream to the audio/video receiving device 2 through a high-definition multimedia interface.

The interactive tablet 1 provided by the embodiment can be flexibly applicable to scenes in different forms, such as teaching or conferences, especially scenes in non-traditional forms such as multi-terminal teaching or multi-terminal conferences, for the scenes in which a plurality of display screens are required to synchronously display the pictures to be displayed.

For example, taking a teaching scene as an example, assuming that a teaching scene is a classroom in which a lecture is given, and at the same time, one or more other spaces also participate in the lecture, the classroom in which the lecture is given and the one or more other spaces that participate in the teaching can be regarded as a space respectively. Thus, the interactive tablet 1 and the audiovisual receiving device 2 provided in the present embodiment may be used in a classroom where lectures are given, or in one or more other spaces where participation is synchronized.

Specifically, when the interactive flat panel 1 provided in this embodiment is laid in the teaching scene, first, the interactive flat panel 1 may include a main control system chip 10 and a decoding chip 11, where the main control system chip 10 may be internally disposed inside the interactive flat panel 1 and configured to convert a picture to be displayed into a code stream and transmit the code stream to the decoding chip 11 through a USB interface; the decoding chip 11 may also be disposed inside the interactive flat panel 1, and is configured to transmit a target picture corresponding to the code stream to the audio/video receiving device 2. The audio and video receiving device 2 can be connected with the interactive tablet 1 through a high-definition multimedia interface and a network cable, the high-definition multimedia interface can be located on one side of the interactive tablet 1, the wiring distance of the network cable is not limited, and the preferable length of the network cable can reach at least 15 meters.

The audio and video receiving device may include a display, a projector, a recording and playing device, a Light Emitting Diode (LED) screen, and the like.

In addition, the interactive tablet 1 may be a computer, a notebook, a tablet computer, a large-scale interactive tablet 1, or a mobile phone, and the like, and it is preferable in this embodiment that the interactive tablet 1 may be regarded as a commonly-equipped multimedia terminal device in an intelligent teaching mode.

The main control system chip 10 arranged in the interactive flat plate 1 can also be used for recording the current display picture generated by the interactive flat plate 1 to obtain a picture to be displayed; the decoding chip 11 may also be configured to decode the code stream to obtain a target picture, where the target picture may correspond to a picture to be displayed, which is obtained by recording through the main control system chip.

The code stream refers to the data flow used by the video file in unit time, also called code rate, and is the most important part in picture quality control in video coding. At the same resolution, the larger the code stream of the video file, the smaller the compression ratio, and the better the picture quality. The video file may be transmitted between the main control system chip 10 and the decoding chip 11 in the form of a code stream.

It should be noted that the USB interface may be used to transmit a variety of data, and the high-definition multimedia interface may be used to transmit a single video and audio signal. Correspondingly, the USB interface may be used to transmit the code stream, and the high-definition multimedia interface may be used to transmit the target picture corresponding to the code stream. The interactive tablet 1 provided by the present embodiment includes: a main control system chip 10 and a decoding chip 12; the main control system chip 10 is connected with the decoding chip 11; the main control system chip 10 can receive the picture to be displayed in real time, convert the picture into a code stream through coding, and further transmit the code stream to the decoding chip 11 through a USB interface; after the decoding chip 11 receives the code stream, it may decode the code stream to obtain a target picture corresponding to the code stream, where the target picture is consistent with the video information contained in the picture to be displayed, the decoding chip 11 may transmit the target picture to the audio and video receiving device 2 through the high-definition multimedia interface, and the audio and video receiving device 2 may simultaneously and respectively display the target picture and the picture to be displayed with the display screen corresponding to the main control system chip 11.

According to the interactive flat plate 1 provided by the embodiment, the picture to be displayed of the interactive flat plate 1 is transmitted to the audio and video receiving device 2 through the main control system chip 10 and the decoding chip 11, so that the picture to be displayed of the main control system chip 10 is output and copied to another display terminal, and further, the interactive flat plate 1 and the audio and video receiving device 2 are used for displaying the picture to be displayed synchronously. Compared with the existing interactive flat plate 1, the display of the display picture to other display terminals is prevented from being influenced due to the fact that the signal conversion module is not updated in time, or the product release of the updated interactive flat plate 1 is influenced.

Further, the interactive tablet 1 further includes: and the display screen 12 is connected with the main control system chip 10.

On the basis of the above embodiments, the interactive flat panel 1 is further optimized, so that the display screen 12 connected to the main control system chip 10 can perform video display simultaneously with the audiovisual receiving device 2. The display 12 can be used to display the picture to be displayed, so that the video information of the picture to be displayed and the target picture can be kept consistent.

It is appreciated that the Display 12 may include a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a Light Emitting Diode (LED) Display. The type of the specific display screen 12 is not limited in detail, and may be determined according to the requirement of actually playing the video.

Further, the picture to be displayed is transmitted to the display 12 by a Low Voltage Differential Signaling (LVDS).

LVDS is a low amplitude differential signaling technique. It uses very low amplitude signals to transmit data through a pair of differential Circuit Board (PCB) traces or balanced cables. Serial data can be transmitted at speeds up to the number of thousands of bits per second (Mbps). Because the voltage signal amplitude is lower and the constant current source mode is adopted for driving, only extremely low noise is generated, very small power is consumed, and even the power consumption is almost unchanged no matter the frequency is high or low. Furthermore, since LVDS transmits data in a differential manner, it is less susceptible to common mode noise.

On the basis of the above embodiments, after the optimized interactive flat plate 1 includes the display screen 12, the to-be-displayed picture is transmitted to the display screen 12 by using the low voltage differential signaling LVDS. By using LVDS to transmit the picture to be displayed to the display 12, the transmission speed of the video information can be faster, and the power consumption for transmission can be lower.

Further, the picture to be displayed is transmitted to the display screen 12 BY a VBO signal meeting the V BY ONE signal standard.

On the basis of the above embodiment, after the optimized interactive tablet 1 includes the display screen 12, the to-be-displayed picture is transmitted to the display screen 12 in the VBO signal meeting the V BY ONE signal standard. The picture to be displayed is transmitted to the display screen 12 in a VBO signal form, so that the video data transmission quality is higher, the transmission speed is higher, the using amount of wiring and connectors is reduced, the transmission cost is reduced, and the transmission space is saved.

It can be known that, by introducing the equalizer function, the VBO signal has higher data transmission quality and higher transmission speed than the conventional Low-Voltage Differential Signaling (LVDS) technology. And because a clock signal recovery technology is adopted, the problem of wiring time lag which becomes more and more obvious under the LVDS scheme in the prior art is solved. In addition, clock signal transmission wiring, which is essential in the LVDS standard, is eliminated, thereby reducing electromagnetic interference.

Further, the increase in transmission speed brings about a series of advantages such as reduction in the amount of wiring and connectors used, reduction in overall cost, and space saving. For example, for an under-screen fingerprint (UD) panel, at least 96 pairs of wires are required BY using the LVDS scheme, and data transmission can be completed BY using the V BY ONE signal standard with only 16 pairs of wires. Moreover, due to the variable transmission speed, the original design adopting the LVDS technology can be seamlessly transited to the V BY ONE signal standard without great change.

Further, the code stream is formed by the main control system chip 10 through screen recording and encoding of the picture to be displayed.

On the basis of the above embodiments, the main control system chip 10 may also be optimized to record and encode the to-be-displayed picture, so as to obtain the code stream.

The picture to be displayed in the video format can be converted into streaming media data in the code stream format by compressing the picture to be displayed through coding. The streaming media data based on the code stream format transmits the picture to be displayed, so that data loss is reduced, the transmission rate of the data can be increased, and the audio and video receiving device 2 can further accurately and synchronously display the target picture.

In addition, fig. 2 is the structure example diagram of the main control system chip in the interactive flat panel according to the embodiment of the present invention, as shown in fig. 2, the main control system chip 10 may include a video acquisition module 101 and a coding module 102, the video acquisition module 101 may be used to record the picture to be displayed, and the coding module 102 may be used to convert the picture to be displayed into a code stream through coding. The to-be-displayed picture is converted into the code stream, so that the transmission of the video information of the to-be-displayed picture can be facilitated, and the high-speed and high-quality transmission of the video information of the to-be-displayed picture to the decoding chip 11 in the form of the code stream can be further realized.

Further, the target picture is formed by decoding the code stream by the decoding chip 11.

In this embodiment, on the basis of the above embodiment, the decoding chip 11 may also be optimized to decode the code stream, so as to obtain the target picture. The decoding chip 11 may convert the code stream into a target picture, and transmit the target picture to the audio/video receiving device 2 through a network cable.

It can be known that, the interactive flat panel 1 may be integrally provided with a main control system chip 10 and a decoding chip 11, and after the decoding chip decodes the code stream to obtain a target picture, the target picture is transmitted to the audio/video receiving device 2 through the network cable. The distance between the audio and video receiving device 2 and the interactive tablet 1 is not specifically limited, and the number of the audio and video receiving devices 2 is not specifically limited. When the interactive flat plate 1 includes a plurality of high-definition multimedia interfaces, and the plurality of high-definition multimedia interfaces are respectively connected to the plurality of audio/video receiving devices 2 through a plurality of network cables, the decoding chip 11 can respectively send the target picture to the plurality of audio/video receiving devices 2 through the plurality of high-definition multimedia interfaces and the plurality of network cables, so as to realize synchronous display of the plurality of display screens on the video information.

In this embodiment, the interactive tablet 1 and the plurality of audio/video receiving devices 2 may be disposed in a plurality of classrooms, a plurality of meeting rooms, different parts of the same classroom or different parts of the same meeting room, so that a plurality of students or mostly participants can watch the display screen conveniently.

The embodiment of the utility model provides an above-mentioned preferred embodiment provides mutual dull and stereotyped 1, specifically provides an audio frequency and video receiving equipment 2 that mutual dull and stereotyped 1 is connected with mutual dull and stereotyped 1 through high definition multimedia interface and net twine including display screen 12. The present embodiment realizes that the picture to be displayed is displayed on the display screen 12 and the target picture is synchronously displayed on the audio/video receiving device 2 by preferentially transmitting the picture to be displayed to the display screen 12 and transmitting the target picture to the audio/video receiving device 2.

Example two

The second embodiment optimizes the recording device based on the above embodiments.

Specifically, the present embodiment further optimizes the target picture to be added with the watermark flag by the processing of the decoding chip 11.

In this embodiment, the decoding chip 11 may further add a watermark flag to the target picture in the process of converting the code stream into the target picture through decoding, where the watermark flag may be set in advance. For example, in a teaching scenario, the watermark marker may include school information, teacher information, and the like; in a conference scenario, the watermark may include company information, time information, and the like.

The watermark mark can be added to the corner of the target picture or added to the bottom of the target picture by reducing the transparency of the watermark mark.

It is known that adding a watermark to a target picture may include two ways: firstly, adding data information of a watermark mark into a code stream, and then converting the code stream with the data information of the watermark mark into a target picture to obtain the target picture with the watermark mark; secondly, firstly, the code stream is converted into a target picture, and then the target picture is processed based on the watermark sign to obtain the target picture with the watermark sign.

It should be noted that the watermark symbol may also be added to the picture to be displayed, and after the master control system chip 10 receives the picture to be displayed, the processing module may perform processing of adding the watermark symbol to the picture to be displayed.

In addition, the second embodiment is further optimized, where the processing of the target picture by the decoding chip 11 includes an enlarged picture of a region selected by a user; or an occlusion picture containing a user selected area.

The enlarged picture can be used for specifically displaying local characteristic information of the video selected by the user, and the shielding picture can be used for shielding secret-related information selected by the user or information irrelevant to the current teaching.

In this embodiment, the user-selected area does not need to be specifically limited, and the user-selected area can be autonomously set according to actual needs, so that any position in the target screen can be enlarged or shielded.

It should be noted that at least one of the magnified picture and the blocked picture may also be added to the picture to be displayed, and after the master control system chip 10 receives the picture to be displayed, at least one of the magnified picture and the blocked picture may be added to the picture to be displayed through the processing module.

The interactive flat plate 1 provided in the second embodiment provides the interactive flat plate 1 capable of adding a watermark, locally amplifying a picture or shielding a picture to be displayed and a target picture, so that a played video can be encrypted, highlighted or shielded, and the interactive flat plate 1 has the characteristics of applicability to various scenes and high practicability.

In order to better illustrate the flexibility of the interactive tablet 1 provided by the present embodiment in use in different scenes, the present embodiment provides a layout manner of the interactive tablet 1 in a video scene to be played. Specifically, fig. 3 shows that does the embodiment of the present invention provides an effect diagram of laying an interactive flat panel 1 under a scene of a video to be played.

As shown in fig. 3, assuming that the video scene to be played is the teaching interconnection of two classrooms, the interactive panel 1 and the audio and video receiving device 2 are adopted to realize the synchronous playing of videos in the two classrooms, and the interactive panel 1 and the audio and video receiving device 2 may be respectively arranged at one end of the first classroom 30 and one end of the second classroom 31 in the scene.

The interactive flat plate 1 comprises a main control system chip 10, a decoding chip 11 and a display screen 12, wherein the main control system chip 10 can transmit a picture to be displayed to the display screen 12 in LVDS or VBO signals, and can also be connected with the audio and video receiving equipment 2 through a high-definition multimedia interface and a network cable, and transmit a target picture to the audio and video receiving equipment through the high-definition multimedia interface and the network cable, so that the target picture can be communicated and transmitted between the high-definition multimedia interface and the network cable.

When a teacher works in the first classroom 30 or the second classroom 31, students in the other classroom can watch teaching videos through the display screen 12 or the audio/video receiving device 2 synchronously, and multi-end synchronous playing of the teaching videos can be achieved.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An interactive tablet, comprising: a main control system chip and a decoding chip;

the main control system chip is connected with the decoding chip;

the decoding chip is externally connected with the audio and video receiving equipment and is used for transmitting the target picture corresponding to the code stream to the audio and video receiving equipment through a high-definition multimedia interface.

2. The interactive tablet of claim 1, further comprising: and the display screen is connected with the main control system chip.

3. The interactive tablet of claim 2, wherein the picture to be displayed is transmitted to the display screen by Low Voltage Differential Signaling (LVDS).

4. The interactive tablet of claim 2, wherein the to-be-shown picture is transmitted to the display screen with a VBO signal that meets VBYONE signal criteria.

5. The interactive tablet of claim 1, wherein the code stream is formed by the main control system chip through screen recording and encoding of the picture to be displayed.

6. The interactive tablet of claim 1, wherein the target picture is formed by the decoding chip through decoding of the codestream.

7. The interactive tablet of claim 6, wherein the target picture is added with a watermark flag by the processing of the decoding chip.