CN220627041U

CN220627041U - Data reading circuit, electronic whiteboard and data reading system

Info

Publication number: CN220627041U
Application number: CN202322089925.5U
Authority: CN
Inventors: 李宇彬; 陈宏哲; 欧峥伟
Original assignee: Shenzhen KTC Commercial Technology Co Ltd
Current assignee: Shenzhen KTC Commercial Technology Co Ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-03-19
Anticipated expiration: 2033-08-04

Abstract

The utility model discloses a data reading circuit, an electronic whiteboard and a data reading system, wherein the electronic whiteboard comprises a data reading circuit, a control module, a data reading circuit storage module and a switch module; the storage module stores EDID; the switch module comprises a first input and output end, a second input and output end and a third input and output end, wherein the first input and output end is connected with the storage module, the second input and output end is connected with the control module of the electronic whiteboard, and the third input and output end is connected with the OPS computer. The utility model can eliminate waiting time and avoid compatibility problem.

Description

Data reading circuit, electronic whiteboard and data reading system

Technical Field

The present utility model relates to the field of electronic whiteboards, and more particularly, to a data reading circuit, an electronic whiteboard, and a data reading system.

Background

OPS (Open Pluggable Specification) computers, i.e., mini-computers that meet the open pluggable specification, are widely used on interactive electronic whiteboards. The OPS computer is connected with the interactive electronic whiteboard through the HDMI interface, and transmits the video signal to the interactive electronic whiteboard screen for display. The electronic whiteboard is generally connected with a plurality of information sources at the same time, when the information sources of the electronic whiteboard are switched to the OPS, the electronic whiteboard and the OPS computer need to execute a handshake process first, the OPS computer can obtain EDID (Extended Display Identification Data) in a CPU of the electronic whiteboard through the handshake process, and output a proper video signal according to the EDID, and the electronic whiteboard can display a picture, so that when the electronic whiteboard is switched to the OPS, the electronic whiteboard needs to wait for a certain time to display the picture. At present, the types of electronic white boards and OPS computers are more, the time spent by handshake flows is different, so that waiting time of users is also different, the use experience of the users is reduced, and meanwhile, the compatibility problem is easy to occur.

Disclosure of Invention

The utility model provides a data reading circuit, an electronic whiteboard and a data reading system, which aim to solve the problems that a user needs to wait and compatibility is easy to occur when the current electronic whiteboard is switched to an OPS information source.

In a first aspect, the present utility model provides a data reading circuit applied to an electronic whiteboard, the data reading circuit including a memory module and a switch module; the storage module stores EDID; the switch module comprises a first input and output end, a second input and output end and a third input and output end, wherein the first input and output end is connected with the storage module, the second input and output end is connected with the control module of the electronic whiteboard, and the third input and output end is connected with the OPS computer.

Further, the switch module further comprises a controlled end, and the controlled end is connected with the control module.

Further, the switch module includes a switch chip, where the switch chip includes the first input/output end, the second input/output end, the third input/output end, and the controlled end.

Further, the first input/output end, the second input/output end and the third input/output end all comprise data transmission pins; the data transmission pin of the first input and output end is connected with the storage module, the data transmission pin of the second input and output end is connected with the control module, and the data transmission pin of the third input and output end is connected with the OPS computer.

Further, the first input/output end, the second input/output end and the third input/output end all further comprise timing pins; the time sequence pin of the first input and output end is connected with the storage module, the time sequence pin of the second input and output end is connected with the control module, and the time sequence pin of the third input and output end is connected with the OPS computer.

Further, the storage module includes a flash memory, where the EDID is stored in the flash memory.

In a second aspect, the present utility model further provides an electronic whiteboard, which includes a control module and the data reading circuit described in any one of the above; the control module is respectively connected with the switch module of the data reading circuit and the OPS computer.

Further, the control module comprises a control chip, and the control chip is respectively connected with the switch module and the OPS computer.

In a third aspect, the present utility model further provides a data reading system, which includes an OPS computer and an electronic whiteboard as described in any one of the above.

Further, the OPS computer is connected with the data reading circuit and the control module of the electronic whiteboard respectively.

According to the data reading circuit, the electronic whiteboard and the data reading system, the storage module stores the EDID, the switch module is respectively connected with the storage module, the OPS computer and the control module, when the OPS computer is started, the OPS computer can directly read the EDID of the storage module and continuously output video signals to the control module, when the electronic whiteboard switches an information source to the OPS, the OPS computer can directly display pictures of the OPS computer due to the fact that the EDID is read in advance, waiting time is shortened, meanwhile, the EDID is located in the storage module, and the EDID can be updated through the electronic whiteboard to be matched with the OPS computer, so that compatibility problems are avoided.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of a data reading circuit according to an embodiment of the utility model; and

fig. 2 is a block diagram of a data reading circuit according to another embodiment of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 2, fig. 1 is a block diagram of a data reading circuit 10 according to an embodiment of the utility model; fig. 2 is a block diagram of a data reading circuit 10 according to another embodiment of the utility model. As shown in fig. 1, the data reading circuit 10 provided by the present utility model includes a memory module 11 and a switch module 12; the storage module 11 stores EDID; the switch module 12, the switch module 12 includes a first input/output end, a second input/output end, and a third input/output end, where the first input/output end is connected to the storage module 11, the second input/output end is connected to the control module 20 of the electronic whiteboard 100, and the third input/output end is connected to the OPS computer 200.

Specifically, the memory module 11 stores EDID (Extended Display Identification Data ), and the OPS computer 200 can identify the electronic whiteboard 100 through EDID, so that the output video signal can be received by the electronic whiteboard 100. The conventional EDID is disposed on the motherboard of the electronic whiteboard 100, and is limited by the type of the motherboard of the electronic whiteboard 100, that is, the conventional EDID needs to be adapted to the type of the motherboard of the electronic whiteboard 100, and is relatively fixed, while the electronic whiteboard 100 is used as an output terminal, and may need to be connected with a plurality of OPS computers 200 of different types according to specific usage situations, so that compatibility problems easily occur. The memory module 11 of the present utility model is provided with EDID matched with the electronic whiteboard 100, and the memory module 11 may be an external memory, connected to the electronic whiteboard 100 through a data line, or disposed in the electronic whiteboard 100. The switch module 12 includes a first input end output end, a second input end output end and a third input end output end, the first input end output end is connected with the storage module 11, the second input end output end is connected with the control module 20, the third input end output end is connected with the OPS computer 200, the OPS computer 200 is normally connected with the storage module 11 through the third input end output end and the first input end output end, and the EDID in the storage module 11 is read, that is, when the OPS computer 200 is started, the OPS computer 200 reads the EDID in the storage module 11 preferentially through the third input end output end and the first input end output, so as to complete a handshake process with the electronic whiteboard 100, and simultaneously, continuously outputs video signals to the electronic whiteboard 100. The electronic whiteboard 100 is generally connected to a plurality of sources, wherein one of the sources is an OPS source, and when a user controls the electronic whiteboard 100 to switch the source to the OPS source, the electronic whiteboard 100 can receive the video signal output by the OPS computer 200 and directly display the video signal, thereby eliminating the waiting time.

In addition, the EDID may be updated by burning the electronic whiteboard 100 to adapt to different OPS computers 200, for example, for an OPS computer 200 of type a, the EDID may be first burned by the electronic whiteboard 100 to update the EDID to an EDID of type a, then the OPS computer 200 performs a handshake process with the EDID in the storage module 11, if the OPS computer 200 is used as the OPS computer 200 at this time, the OPS computer 200 of type a is replaced with an OPS computer 200 of type B, the EDID may be burned by the electronic whiteboard 100 to update the EDID to an EDID of type B, so as to avoid compatibility problems.

As a further example, the switch module 12 further includes a controlled terminal, and the controlled terminal is connected to the control module 20.

The control module 20 is connected to the controlled end of the switch module 12, and is used for controlling the communication mode of the switch module 12, for example, in a normal state, the control module 20 controls the switch module 12 to be respectively communicated with the storage module 11 and the OPS computer 200, so that the OPS computer 200 can conveniently read the EDID to perform a handshake process, and when the EDID needs to be updated, the control module 12 can be controlled to be respectively communicated with the storage module 11 and the control module 20.

As a further embodiment, the switch module 12 includes a switch chip 121, and the switch chip 121 includes the first input/output terminal, the second input/output terminal, the third input/output terminal, and the controlled terminal.

The switch module 12 may include a single pole double throw switch or relay with a chip, which is convenient to switch between different communication modes according to the control of the control module 20, and is used to communicate the storage module 11 with the OPS computer 200 and the storage module 11 with the control module 20. Preferably, the control module 20 may include a control chip, which is connected to the storage module 11, the OPS computer 200, and the control module 20, respectively.

As a further embodiment, the first input-output terminal, the second input-output terminal and the third input-output terminal each comprise a data transmission pin SDA; the data transmission pin SDA of the first input/output end is connected to the storage module 11, the data transmission pin SDA of the second input/output end is connected to the control module 20, and the data transmission pin SDA of the third input/output end is connected to the OPS computer 200.

As a further embodiment, the first input/output terminal, the second input/output terminal, and the third input/output terminal each further include a timing pin SCL; the timing pin SCL of the first input/output end is connected to the storage module 11, the timing pin SCL of the second input/output end is connected to the control module 20, and the timing pin SCL of the third input/output end is connected to the OPS computer 200.

The switch chip 121 can perform data transmission through the data transmission pin SDA, and confirm the timing of data transmission through the timing pin SCL, so as to facilitate data transmission with the memory module 11, the OPS computer 200, and the control module 20. In addition, the switch module 12 may further include a protection circuit composed of a plurality of resistors and capacitors, for protecting the switch chip 121, the memory module 11, the OPS computer 200, and the control module 20.

As a further embodiment, the storage module 11 includes a flash memory, where the EDID is stored in the flash memory.

The memory module 11 may be a charged eeprom, such as a flash memory, for storing EDID.

The utility model also discloses an electronic whiteboard 100, which comprises a control module 20 and the data reading circuit 10 in any of the above embodiments, wherein the control module 20 is respectively connected with the switch module 12 of the data reading circuit 10 and the OPS computer 200.

The control module 20 is connected to the OPS computer 200, and is capable of receiving video signals of the OPS computer 200, and the control module 20 is further connected to the switch module 12, and is used for controlling the switch module 12 and updating EDID in the storage module 11 through the switch module 12.

As a further embodiment, the control module 20 includes a control chip, and the control chip is connected to the switch module 12 and the OPS computer 200, respectively.

The control chip may be a CPU of the electronic whiteboard 100, and is used to control the operation of the electronic whiteboard 100 and control the communication of the switch module 12.

The utility model also discloses a data reading system, which comprises an OPS computer 200 and the electronic whiteboard 100 according to any one of the above embodiments.

As a further embodiment, the OPS computer 200 is connected to the data reading circuit 10 and the control module 20 of the electronic whiteboard 100, respectively.

According to the OPS computer, the EDID in the storage module can be read in advance through the switch module to finish a handshake process, when the electronic whiteboard switches the information source to the OPS, the picture of the OPS computer can be directly displayed, the waiting time is eliminated, and meanwhile, the electronic whiteboard can update the EDID, so that different OPS computers are adapted, and the problem of compatibility is avoided.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A data reading circuit for use with an electronic whiteboard, comprising:

the storage module is used for storing the EDID;

the switch module comprises a first input and output end, a second input and output end and a third input and output end, wherein the first input and output end is connected with the storage module, the second input and output end is connected with the control module of the electronic whiteboard, and the third input and output end is connected with the OPS computer.

2. The data reading circuit of claim 1, wherein the switch module further comprises a controlled terminal, the controlled terminal being coupled to the control module.

3. The data reading circuit of claim 2, wherein the switch module comprises a switch chip including the first input-output terminal, the second input-output terminal, the third input-output terminal, and the controlled terminal.

4. The data reading circuit of claim 3, wherein the first input output, the second input output, and the third input output each comprise a data transfer pin;

the data transmission pin of the first input and output end is connected with the storage module, the data transmission pin of the second input and output end is connected with the control module, and the data transmission pin of the third input and output end is connected with the OPS computer.

5. The data read circuit of claim 4, wherein the first input output, the second input output, and the third input output each further comprise a timing pin;

the time sequence pin of the first input and output end is connected with the storage module, the time sequence pin of the second input and output end is connected with the control module, and the time sequence pin of the third input and output end is connected with the OPS computer.

6. The data reading circuit of claim 1, wherein the memory module comprises a flash memory, the flash memory storing the EDID.

7. An electronic whiteboard comprising a control module and a data reading circuit according to any one of claims 1 to 6;

the control module is respectively connected with the switch module of the data reading circuit and the OPS computer.

8. The electronic whiteboard of claim 7, wherein said control module comprises a control chip, said control chip being connected to said switch module and said OPS computer, respectively.

9. A data reading system comprising an OPS computer and an electronic whiteboard according to any one of claims 7 to 8.

10. The data reading system of claim 9, wherein the OPS computer is connected to the data reading circuit and the control module of the electronic whiteboard, respectively.